Large-size tire section restraint device

Abstract

The utility model relates to the technical field of tire auxiliary detection devices, in particular to a large-size tire section restraining device. The tire fixing device comprises a fixing frame assembly, an outer contour restraining plate and an inner contour restraining plate, and the outer contour restraining plate and the inner contour restraining plate are combined inside and outside to form a clamping groove which is completely the same as the inner contour and the outer contour of a finished tire in shape inside; the fixing frame assembly is connected with the outer contour constraint plate through the pre-tightening assembly, the pre-tightening assembly applies pre-tightening force contracting inwards to the outer contour constraint plate, and the section of the tire is tightly extruded and fixed in the clamping groove. According to the utility model, the outer contour constraint plate is driven by the pre-tightening assembly to continuously contract inwards, and the section of the tire is tightly fixed in the clamping groove formed by splicing the inner contour constraint plate and the outer contour constraint plate, so that accurate constraint of the section of the large-size tire is realized.

Description

Technical Field

[0001] This utility model relates to the technical field of tire auxiliary detection devices, specifically to a large-size tire section constraint device. Background Technology

[0002] When conducting tire testing and analysis, it is necessary to fix the tire cross-section to accurately obtain relevant data. Previously, those skilled in the art have explored various methods to solve the problem of tire cross-section fixation. For example, the tire cross-section fixing device disclosed in Chinese Patent Publication No. CN215036814U uses a point contact method and is only suitable for small-sized tires. However, large-sized tires have large cross-sections and high rigidity, making it difficult for existing fixing devices to achieve precise and stable constraint. During testing and analysis, the tire cross-section is prone to displacement or deformation, thus affecting the accuracy of the test results. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a large-size tire section restraint device.

[0004] The technical solution adopted in this utility model is as follows:

[0005] A large-size tire section restraint device includes a fixed frame assembly, an outer contour restraint plate, and an inner contour restraint plate, wherein: the outer contour restraint plate and the inner contour restraint plate are combined internally and externally to form a groove that is exactly the same as the inner and outer contour shape of the finished tire; the fixed frame assembly is connected to the outer contour restraint plate through a pre-tightening assembly, and the pre-tightening assembly applies a pre-tightening force to the outer contour restraint plate to shrink inward, so that the tire section is tightly squeezed and fixed in the groove.

[0006] This technical solution initially nests the tire cross-section on the inner contour constraint plate, and uses this as support. Through the pre-tightening component in the constraint device, the outer contour constraint plate is continuously contracted inward, tightly fixing the tire cross-section in the slot formed by splicing the inner and outer contour constraint plates, thus achieving precise constraint of large-size tire cross-sections.

[0007] In addition, the large-size tire section restraint device proposed above according to this utility model may also have the following additional technical features:

[0008] According to one embodiment of the present invention, the fixed frame assembly includes a main frame, on which through holes are reserved to cooperate with the pre-tightening assembly.

[0009] In this technical solution, the main frame is welded from metal hollow rectangular tubes. The preload bolts and nuts are selected with relatively large specifications to ensure that they can provide sufficient preload for subsequent cross-sectional constraints. The thread parameters of the threaded blind hole are the same as those of the preload nut, and the preload bolt can fit tightly with it.

[0010] According to one embodiment of the present invention, the pre-tightening assembly includes a pre-tightening nut and a pre-tightening bolt. The pre-tightening bolt is screwed into the pre-tightening nut from the outside of the main frame and screwed into the fixing member to achieve a fixed connection thereto.

[0011] In this technical solution, the main frame is machined with through holes, and the preload nut is welded to the position of the outer through hole, with their central axes coinciding. The preload bolt is screwed into the preload nut from the outside, and the tail of the bolt is screwed into the threaded blind hole of the fixing component, thus connecting the two. The main frame is machined with through holes for connecting the preload component, and the position and number of through holes can be dynamically adjusted according to the cross-sectional dimensions of the constrained tire; generally, the larger the cross-sectional dimensions of the constrained tire, the more through holes are arranged.

[0012] According to one embodiment of the present invention, the end of the pre-tightening bolt is fitted with a fixing member by a fastening screw, and the outer contour constraint plate shrinks inward by tightening the pre-tightening bolt.

[0013] In this technical solution, the fixing component has a semi-closed rectangular groove with a U-shaped cross-section, and the outer contour constraint plate can be inserted into it.

[0014] According to one embodiment of the present invention, the outer contour constraint plate and the inner contour constraint plate are both made of acrylic material, with a thickness of 1 / 2 of the tire cross section. Their shapes are based on the inner and outer contour shapes of the finished tire and are obtained by milling or laser cutting.

[0015] In this technical solution, an acrylic sheet with high hardness and relatively light material is selected, and a contour constraint plate that is consistent with the inner and outer contour shape of the finished tire is processed by milling or laser cutting.

[0016] According to one embodiment of the present invention, the inner and outer contour shapes of the finished tire are determined by a scanned two-dimensional drawing of the finished tire.

[0017] In this technical solution, using a laser scanning device to perform a three-dimensional scan of the tire in its natural state without a rim is a standard procedure, resulting in a two-dimensional drawing. This utility model only improves the tooling structure.

[0018] According to one embodiment of the present invention, the outer contour constraint plate is composed of four separate plates, and its inner contour shape is consistent with the outer contour of the finished tire; the outer contour shape of the finished tire is square, and the size of the main frame is 1.2-1.5 times its size.

[0019] In this technical solution, the dimensions of the main frame meet the constraints of the tire cross-section without wasting acrylic material.

[0020] According to one embodiment of the present invention, the inner contour constraint plate is a single piece of sheet material, the outer contour shape of which is consistent with the inner contour of the finished tire.

[0021] In this technical solution, since the large-size tire cross-section is rigid and difficult to deform, the inner contour constraint plate is made of a single sheet material, which can provide sufficient support inside and prevent deformation caused by preload.

[0022] According to one embodiment of the present invention, through holes are machined on the outer contour constraint plate and the inner contour constraint plate near their edges.

[0023] In this technical solution, the tail of the fixing component is provided with a threaded blind hole with the same specifications as the thread parameters of the pre-tightening bolt. The fixing component has a semi-closed rectangular groove with a width slightly larger than the thickness of the contour constraint plate, so that the contour constraint plate can be inserted into the rectangular groove. The outer contour constraint plate, the inner contour constraint plate and the fixing component can be connected by fixing screws.

[0024] Compared with the prior art, this utility model has the following advantages:

[0025] This invention uses a pre-tightening component to drive the outer contour constraint plate to continuously contract inward, thereby firmly fixing the tire cross-section into the slot formed by splicing the inner and outer contour constraint plates, achieving precise constraint of large-size tire cross-sections. Attached Figure Description

[0026] Figure 1 This is a perspective view of the present invention.

[0027] Figure 2 It is a 3D diagram of the fixed frame components.

[0028] Figure 3 This is a 3D view of the pre-tightening assembly.

[0029] Figure 4 It is a three-dimensional view of the outer contour constraint plate and the inner contour constraint plate.

[0030] In the figure: 1. Fixed frame assembly; 11. Main frame; 12. Through hole; 2. Preload assembly; 21. Preload bolt; 22. Preload nut; 23. Fixed component; 3. Outer contour constraint plate; 4. Inner contour constraint plate; 5. Tire cross section. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0032] Example 1

[0033] like Figures 1 to 4 As shown, this embodiment provides a large-size tire section constraint device, including a fixed frame assembly 1, an outer contour constraint plate 3, and an inner contour constraint plate 4, wherein: the outer contour constraint plate 3 and the inner contour constraint plate 4 are combined internally and externally to form a groove that is exactly the same as the inner and outer contour shape of the finished tire; the fixed frame assembly 1 is connected to the outer contour constraint plate 3 through a pre-tightening assembly 2, and the pre-tightening assembly 2 applies a pre-tightening force to the outer contour constraint plate 3 to contract inward, so that the tire section 5 is tightly squeezed and fixed in the groove.

[0034] like Figures 1 to 4 As shown, in this technical solution, the tire section 5 is initially nested on the inner contour constraint plate, and supported by it. The outer contour constraint plate 3 is continuously contracted inward by the pre-tightening component 2 in the constraint device, so that the tire section 5 is tightly fixed in the slot formed by splicing the inner and outer contour constraint plates, thereby achieving precise constraint of the large-size tire section 5.

[0035] In addition, the large-size tire section restraint device proposed above according to this utility model may also have the following additional technical features:

[0036] like Figure 2 As shown, the fixed frame assembly 1 includes a main frame 11, on which a through hole is reserved to cooperate with the pre-tightening assembly 2.

[0037] In this technical solution, the main frame 11 is welded from a hollow metal rectangular tube. The preload bolts 21 and nuts are selected with relatively large specifications to ensure that they can provide sufficient preload force for subsequent cross-sectional constraints. The thread parameters of the threaded blind hole are the same as those of the preload nut 22, and the preload bolts 21 can fit tightly with it.

[0038] like Figure 3 As shown, the pre-tightening component 2 includes a pre-tightening nut 22 and a pre-tightening bolt 21. The pre-tightening bolt 21 is screwed into the pre-tightening nut 22 from the outside of the main frame 11 and screwed into the fixing component 23 to achieve a fixed connection with it.

[0039] In this technical solution, the main frame 11 is machined with through holes 12, and the preload nut 22 is welded to the position of the outer through hole 12, with their central axes coinciding; the preload bolt 21 is screwed into the preload nut 22 from the outside, and the tail of the bolt is screwed into the threaded blind hole of the fixing member 23 to achieve the connection between the two. The main frame 11 is machined with through holes 12 for connecting the preload member. The position and number of through holes 12 can be dynamically adjusted according to the size of the restrained tire section 5; generally, the larger the size of the restrained tire section 5, the more through holes 12 are arranged.

[0040] According to one embodiment of the present invention, the end of the pre-tightening bolt 21 is fitted with a fixing member 23 by a fastening screw, and the outer contour constraint plate 3 shrinks inward by tightening the pre-tightening bolt 21.

[0041] In this technical solution, the fixing component 23 has a semi-closed rectangular groove with a U-shaped cross section, and the outer contour constraint plate 3 can be inserted into it.

[0042] like Figure 4 As shown, the outer contour constraint plate 3 and the inner contour constraint plate 4 are both made of acrylic material, and their thickness is 1 / 2 of the tire cross section 5. Their shape is based on the inner and outer contour shape of the finished tire and is obtained by milling or laser cutting.

[0043] In this technical solution, an acrylic sheet with high hardness and relatively light material is selected, and a contour constraint plate that is consistent with the inner and outer contour shape of the finished tire is processed by milling or laser cutting.

[0044] According to one embodiment of the present invention, the inner and outer contour shapes of the finished tire are determined by a scanned two-dimensional drawing of the finished tire.

[0045] In this technical solution, using a laser scanning device to perform a three-dimensional scan of the tire in its natural state without a rim is a standard procedure, resulting in a two-dimensional drawing. This utility model only improves the tooling structure.

[0046] like Figure 4 As shown, the outer contour constraint plate 3 is composed of four separate plates, and its inner contour shape is consistent with the outer contour of the finished tire; the outer contour shape of the finished tire is square, and the size of the main frame 11 is 1.2-1.5 times its size.

[0047] In this technical solution, the dimensions of the main frame 11 meet the constraint requirements of the tire section 5 without wasting acrylic material.

[0048] like Figure 4 As shown, the inner contour constraint plate 4 is a single piece of sheet material, and its outer contour shape is consistent with the inner contour of the finished tire.

[0049] In this technical solution, since the large-size tire section 5 has high rigidity and is difficult to deform, the inner contour constraint plate 4 is made of a whole plate, which can provide sufficient support inside and avoid deformation caused by preload.

[0050] like Figure 4 As shown, through holes 12 are machined on the outer contour constraint plate 3 and the inner contour constraint plate 4 near their edges.

[0051] In this technical solution, the tail of the fixing component 23 is provided with a threaded blind hole with the same specifications and thread parameters as the pre-tightening bolt 21. The fixing component 23 has a semi-closed rectangular groove with a width slightly larger than the thickness of the contour constraint plate, so that the contour constraint plate can be inserted into the rectangular groove. The outer contour constraint plate 3 and the inner contour constraint plate 4 can be connected to the fixing component 23 by fixing screws.

[0052] The usage process of the above embodiments is as follows:

[0053] like Figures 1 to 4 As shown, four separate outer contour constraint plates 3 and one inner contour constraint plate 4, identical to the inner and outer contours of the finished tire, are machined from acrylic material by milling or laser cutting. These are combined to form a groove identical to the inner and outer contours of the tire, with a thickness of 1 / 2 the tire cross-section 5. The tire cross-section 5 is initially nested within the inner contour constraint plate as support. The main frame 11 of the fixed frame assembly 1 is welded from a hollow metal rectangular tube, with a through hole reserved for cooperation with the pre-tightening assembly 2. The pre-tightening nut 22 of the pre-tightening assembly 2 is welded to the main frame 11. At the outer through hole 12, the pre-tightening bolt 21 is screwed into the pre-tightening nut 22 from the outside. Its end is fitted with a fixing component 23 via a fastening screw. The fixing component 23 has a semi-closed rectangular groove for the outer contour constraint plate 3 to be inserted. Tightening the pre-tightening bolt 21 causes its tail to screw into the through hole of the fixing component 23 of the outer contour constraint plate 3, thus connecting the two. As the pre-tightening bolt 21 is screwed in, the pre-tightening component 2 applies an inwardly contracting pre-tightening force to the outer contour constraint plate 3, tightly pressing and fixing the tire section 5 within the groove, achieving precise constraint. Furthermore, the position and number of through holes 12 on the main frame 11 can be dynamically adjusted according to the size of the tire section 5. Generally, the larger the size, the more through holes 12 are required. The size of the main frame 11 is 1.2-1.5 times the size of the tire section 5.

[0054] Although the present invention has been described in detail with reference to the accompanying drawings and preferred embodiments, it is not limited thereto. Various equivalent modifications or substitutions can be made to the embodiments of the present invention by those skilled in the art without departing from the spirit and essence of the present invention, and such modifications or substitutions should all be within the scope of the present invention. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should also be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the scope of the claims.

Claims

1. A large size tire cross section restraining device characterized by, It includes a fixed frame assembly (1), an outer contour constraint plate (3), and an inner contour constraint plate (4), wherein: the outer contour constraint plate (3) and the inner contour constraint plate (4) are combined internally and externally to form a groove that is exactly the same as the inner and outer contour shape of the finished tire; the fixed frame assembly (1) is connected to the outer contour constraint plate (3) through a pre-tightening assembly (2), and the pre-tightening assembly (2) applies a pre-tightening force to the outer contour constraint plate (3) to shrink inward, and the tire section (5) is tightly squeezed and fixed in the groove.

2. The large size tire cross section restraining device according to claim 1, wherein The fixed frame assembly (1) includes a main frame (11), on which a through hole (12) is reserved to cooperate with the pre-tightening assembly (2).

3. The large size tire cross section restraining device, as recited in claim 2, wherein, The pre-tightening assembly (2) includes a pre-tightening nut (22) and a pre-tightening bolt (21). The pre-tightening bolt (21) is screwed into the pre-tightening nut (22) from the outside of the main frame (11) and screwed into the fixing member (23) to achieve a fixed connection with it.

4. The apparatus of claim 3, wherein The end of the pre-tightening bolt (21) is fitted with a fixing member (23) by a fastening screw. By tightening the pre-tightening bolt (21), the outer contour constraint plate (3) shrinks inward.

5. The large-size tire section restraint device as described in claim 1, characterized in that, The outer contour constraint plate (3) and the inner contour constraint plate (4) are both made of acrylic material. Their thickness is 1 / 2 of the tire cross section (5). Their shape is based on the inner and outer contour shape of the finished tire and is obtained by milling or laser cutting.

6. The apparatus of claim 5, wherein The inner and outer contours of the finished tire are determined by the scanned two-dimensional drawings of the finished tire.

7. The large size tire cross section restraining device, as recited in claim 2, wherein, The outer contour constraint plate (3) is composed of four separate plates, and its inner contour shape is consistent with the outer contour of the finished tire. The outer contour shape of the finished tire is square, and the size of the main frame (11) is 1.2-1.5 times its size.

8. A large size tyre section restraining device according to claim 1 or 5, characterised in that, The inner contour constraint plate (4) is a single piece of material, and its outer contour shape is consistent with the inner contour of the finished tire.

9. The large size tire cross section restraining device, as recited in claim 1, wherein, Through holes are machined on the outer contour constraint plate (3) and the inner contour constraint plate (4) near their edges.

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