Tow vehicle spare tire connection structure

Abstract

The utility model provides a kind of spare tire connecting structure for tractor, comprising: traction saddle, the strip-shaped installation slot is opened on the traction saddle, and the bottom end of strip-shaped installation slot is provided with mounting hole;Connecting rod, the one end of connecting rod is sequentially provided with hook, limit plate, and the other end outside is provided with external thread, the end face of hook close to limit plate is attached with the lower end surface of traction saddle, the limit plate is located in the inboard of strip-shaped installation slot, and connecting rod is located in the inboard of mounting hole;Pressing plate, connecting rod is penetrated with the nut threaded connection of pressing plate;Spare tire, spare tire is located between pressing plate and traction saddle, and spare tire is located at the outside of connecting rod.The utility model has the beneficial effects: compared with traditional bandage installation, installation efficiency is improved, and it is more firm, compared with hook place threaded connection, the installation efficiency of the hook setting of the application is improved, and through the setting of limit plate, it can prevent connecting rod from rotating and moving, so that connecting structure is more stable.

Description

Technical Field

[0001] This utility model belongs to the field of spare tire connection technology, and in particular relates to a spare tire connection structure for tractor vehicles. Background Technology

[0002] Does a tractor unit need to be equipped with a spare tire when it leaves the factory? Generally, tractor unit manufacturers attach the spare tire to the towing saddle. After receiving the vehicle, the customer transfers the spare tire to the designated location according to the model of the towing bucket. Currently, the connection structure of the spare tire to the towing saddle is mainly of the following two types: First, using a strap through the center hole of the spare tire hub and the mounting hole of the towing saddle to tie the spare tire to the towing saddle. This connection structure is not secure, the spare tire is easy to fall off, and the connection process is complicated and inefficient. Second, using a connecting rod with pressure plates at both ends, the connecting rod is threaded to a nut, and the two pressure plates press the upper end of the spare tire and the lower end of the towing saddle respectively. This connection structure is inconvenient to install, requiring operation from below the towing saddle. In addition, there is no limiting structure between the pressure plates, the towing saddle, and the spare tire, and the spare tire is prone to displacement, affecting the stability of the structure. Utility Model Content

[0003] In view of this, the present invention aims to provide a spare tire connection structure for a tractor, in order to solve at least one of the aforementioned technical problems.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] A spare tire connection structure for a tractor unit includes:

[0006] A traction saddle, wherein a strip-shaped mounting groove is provided on the traction saddle, and a mounting hole is provided at the bottom end of the strip-shaped mounting groove;

[0007] A connecting rod, one end of which is provided with a hook and a limiting plate in sequence, and the other end has an external thread. The end face of the hook near the limiting plate is in contact with the lower end face of the traction saddle. The limiting plate is located inside the strip-shaped mounting groove, and the connecting rod is located inside the mounting hole.

[0008] The pressure plate, through which the connecting rod is threadedly connected to the nut;

[0009] The spare tire is located between the pressure plate and the traction saddle, and is situated on the outside of the connecting rod.

[0010] Furthermore, the pressure plate has a through hole, and the end of the connecting rod away from the hook passes through the through hole and is threadedly connected to the nut;

[0011] The pressure plate is bent upward on both sides to form a first reinforcing rib, and the first reinforcing rib is arranged along the length direction of the pressure plate.

[0012] Furthermore, the pressure plate is bent downwards at both ends to form a limiting part, which is located inside the bolt mounting hole of the spare tire hub.

[0013] Furthermore, the bolt mounting holes where the two limiting parts are located are not axially symmetrical along the axis of the spare tire hub.

[0014] Furthermore, the width of the limiting plate matches the width of the strip mounting groove;

[0015] There is a gap between the lower end face of the limiting plate and the bottom end of the strip mounting groove.

[0016] Furthermore, the gap between the lower end face of the limiting plate and the bottom end of the strip mounting groove is 1-2cm.

[0017] Furthermore, one end of the strip-shaped mounting groove is a notch, and the sidewall of the other end is an arc-shaped surface;

[0018] The limiting plate is located at the end of the strip mounting groove away from the notch and fits against the arc-shaped surface;

[0019] The hook extends toward the notch of the strip mounting groove;

[0020] The connecting rod is fitted against the inner wall of the mounting hole, and the fitting point between the connecting rod and the mounting hole is located near the notch of the strip mounting groove.

[0021] Furthermore, the two sides of the limiting plate are bent upward to form a second reinforcing rib, which corresponds to the inner sidewalls on both sides of the strip mounting groove.

[0022] Furthermore, a square tube is fixed on the end face of the pressure plate near the traction saddle, and a positioning block that matches the inner side of the square tube is fixed on the connecting rod, the positioning block being located inside the square tube.

[0023] Furthermore, the upper edge of the positioning block has a chamfered structure.

[0024] Compared with the prior art, the spare tire connection structure for tractor vehicles described in this utility model has the following advantages:

[0025] (1) The spare tire connection structure for tractor described in this utility model improves the installation efficiency and is more secure than the traditional strap installation. Compared with the threaded connection at the hook, the hook setting of this application improves the installation efficiency, and the setting of the limiting plate can prevent the connecting rod from rotating and moving, making the connection structure more stable.

[0026] (2) The spare tire connection structure for tractor described in this utility model has a limiting plate located at the end of the strip mounting groove away from the notch, and an arc-shaped face limiting the limiting plate to prevent the limiting plate and the connecting rod from moving towards the end of the strip mounting groove away from the notch. The limiting plate is located inside the strip mounting groove, and the strip mounting groove can prevent the limiting plate from rotating. The inner wall of the mounting hole limits the connecting rod to prevent the connecting rod from moving towards the notch of the strip mounting groove.

[0027] (3) The spare tire connection structure for tractor described in this utility model has a chamfered upper edge of the positioning block. The chamfered structure of the positioning block facilitates the insertion of the positioning block into the square tube. The directional tube and the positioning block are designed to prevent the pressure plate and the connecting rod from rotating relative to each other. The setting of the limiting part can limit the spare tire. Attached Figure Description

[0028] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0029] Figure 1 This is a first-view perspective three-dimensional structural diagram of the spare tire connection structure described in an embodiment of the present utility model;

[0030] Figure 2 This is a second-view perspective three-dimensional structural diagram of the spare tire connection structure described in an embodiment of the present utility model;

[0031] Figure 3 As described in the embodiments of this utility model Figure 2 Schematic diagram of the structure at point B;

[0032] Figure 4 This is a three-dimensional structural diagram of the traction saddle as described in an embodiment of the present utility model;

[0033] Figure 5 As described in the embodiments of this utility model Figure 4 Schematic diagram of the structure at point A in the middle;

[0034] Figure 6 This is a schematic diagram of the first cross-sectional structure of the spare tire connection structure according to an embodiment of the present utility model;

[0035] Figure 7 As described in the embodiments of this utility model Figure 6 Schematic diagram of the structure at point C;

[0036] Figure 8 This is a second cross-sectional view of the spare tire connection structure described in an embodiment of the present utility model.

[0037] Figure 9This is a three-dimensional structural diagram of the connecting rod according to an embodiment of the present utility model;

[0038] Figure 10 This is a schematic diagram of the three-dimensional structure of the pressure plate according to an embodiment of the present utility model;

[0039] Figure 11 This is a three-dimensional structural diagram of the pressure plate and connecting rod according to an embodiment of the present utility model.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1. Traction saddle; 2. Spare tire; 3. Pressure plate; 4. Connecting rod; 5. Limiting plate; 6. Hook; 7. Nut; 101. Strip mounting groove; 102. Mounting hole; 301. First reinforcing rib; 302. Limiting part; 303. Square tube; 401. Positioning block; 501. Second reinforcing rib. Detailed Implementation

[0042] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0043] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0044] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0045] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0046] like Figures 1 to 11 As shown, a spare tire connection structure for a tractor unit includes:

[0047] The traction saddle 1 has a strip-shaped mounting groove 101 and a mounting hole 102 at the bottom end of the strip-shaped mounting groove 101.

[0048] The connecting rod 4 has a hook 6 and a limiting plate 5 on one end, and an external thread on the other end. The end face of the hook 6 near the limiting plate 5 is in contact with the lower end face of the traction saddle 1. The limiting plate 5 is located inside the strip mounting groove 101, and the connecting rod 4 is located inside the mounting hole 102.

[0049] Pressure plate 3, connecting rod 4 passes through pressure plate 3 and is threaded to nut 7; spare tire 2 (e.g. Figure 1 As shown, to facilitate the display of details (the spare tire 2 is hidden), the spare tire 2 is located between the pressure plate 3 and the traction saddle 1, and the spare tire 2 is located on the outside of the connecting rod 4.

[0050] The pressure plate 3 has a through hole. The end of the connecting rod 4 away from the hook 6 passes through the through hole and is threaded to the nut 7. The two sides of the pressure plate 3 are bent upward to form the first reinforcing rib 301. The first reinforcing rib 301 is set along the length of the pressure plate 3. The first reinforcing rib 301 improves the structural strength of the pressure plate 3 and prevents the pressure plate 3 from deforming when the clamping force is too large.

[0051] The pressure plate 3 is bent down at both ends to form a limiting part 302. The limiting part 302 is located inside the bolt mounting hole of the spare tire 2 hub. The limiting plate 5 plays a limiting role for the spare tire 2, preventing relative movement between the pressure plate 3 and the spare tire 2.

[0052] The bolt mounting holes where the two limiting parts 302 are located are not axially symmetrical along the axis of the spare tire 2 hub. Compared with the symmetrical pressure plate 3, this solution can reduce the length of the pressure plate 3, thereby reducing costs.

[0053] There is a gap between the lower end face of the limiting plate 5 and the bottom end of the strip mounting groove 101. The gap between the lower end face of the limiting plate 5 and the bottom end of the strip mounting groove 101 ranges from 1 to 2 cm. The gap is designed to facilitate the installation of the connecting rod 4.

[0054] The limiting plate 5, hook 6 and connecting rod 4 are fixedly connected by welding.

[0055] The width of the limiting plate 5 matches the width of the strip mounting groove 101; one end of the strip mounting groove 101 is a notch (e.g., Figure 5 At point a), the sidewall at the other end is an arc-shaped surface (e.g., at point a). Figure 5 (at point b); the limiting plate 5 is located at the end of the strip mounting groove 101 away from the notch, and fits against the curved surface (e.g., at point b). Figure 7The middle limiting plate 5 is located at the end of the strip mounting groove 101 away from the notch. The arc-shaped face limits the limiting plate 5 to prevent the limiting plate 5 and the connecting rod 4 from moving towards the end of the strip mounting groove 101 away from the notch. The limiting plate 5 is located inside the strip mounting groove 101, and the strip mounting groove 101 can prevent the limiting plate 5 from rotating.

[0056] The hook 6 extends towards the notch of the strip mounting groove 101 to facilitate the installation of the hook 6; the connecting rod 4 fits against the inner wall of the mounting hole 102, and the fitting point between the connecting rod 4 and the mounting hole 102 is located close to the notch of the strip mounting groove 101. The inner wall of the mounting hole 102 limits the connecting rod 4 to prevent the connecting rod 4 from moving towards the notch of the strip mounting groove 101.

[0057] The two sides of the limiting plate 5 are bent upward to form second reinforcing ribs 501, which correspond to the inner sidewalls on both sides of the strip mounting groove 101. The second reinforcing ribs 501 improve the structural strength of the limiting plate 5. The correspondence between the second reinforcing ribs 501 and the inner sidewalls on both sides of the strip mounting groove 101 increases the contact area between the limiting plate 5 and the inner sidewall of the strip mounting groove 101, preventing scratches on the inner sidewall of the strip mounting groove 101.

[0058] A square tube 303 is fixedly mounted on the end face of the pressure plate 3 near the traction saddle 1. A positioning block 401 matching the inner side of the square tube 303 is fixedly mounted on the connecting rod 4. The positioning block 401 is located inside the square tube 303. The upper edge of the positioning block 401 has a chamfered structure, which facilitates the insertion of the positioning block 401 into the square tube 303. The directional tube and the positioning block 401 are designed to prevent relative rotation between the pressure plate 3 and the connecting rod 4. The limiting part 302 is designed to limit the movement of the spare tire 2.

[0059] Work process:

[0060] When implementing this solution, the spare tire 2 is placed on the traction saddle 1, with the center hole of the spare tire 2's wheel hub corresponding to the position of the mounting hole 102. The connecting rod 4 is tilted (the limiting plate 5 is located inside the strip mounting groove 101; the connecting rod 4 can only be tilted because there is a gap between the lower end face of the limiting plate 5 and the bottom end of the strip mounting groove 101). After the hook 6 passes through the mounting hole 102, the connecting rod 4 is straightened so that the axis of the connecting rod 4 is parallel to the axis of the mounting hole 102. At this time, the limiting plate 5 is located inside the strip mounting groove 101. The pressure plate 3 is installed on the connecting rod 4. After the connecting rod 4 passes through the through hole, it is threadedly connected to the nut 7. The nut 7 and the hook 6 are tightened to press the lower end face of the traction saddle 1. The pressure plate 3 applies pressure to the spare tire 2, pressing the spare tire 2 tightly against the upper end of the traction saddle 1. The tire of the spare tire 2 contacts the upper end face of the traction saddle 1, increasing the friction.

[0061] Compared to traditional strap installation, this method improves installation efficiency and is more secure. Compared to threaded connection at hook 6, the hook 6 setting in this application improves installation efficiency, and the setting of limit plate 5 can prevent the connecting rod 4 from rotating and moving, making the connection structure more stable.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

[0063] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A spare tire connection structure for a tractor, characterized in that, include: A traction saddle (1) is provided with a strip-shaped mounting groove (101) and a mounting hole (102) is provided at the bottom end of the strip-shaped mounting groove (101). The connecting rod (4) has a hook (6) and a limiting plate (5) on one end, and an external thread on the other end. The end face of the hook (6) near the limiting plate (5) is in contact with the lower end face of the traction saddle (1). The limiting plate (5) is located inside the strip mounting groove (101), and the connecting rod (4) is located inside the mounting hole (102). The pressure plate (3) is connected to the connecting rod (4) by thread through the pressure plate (3) and the nut (7). Spare tire (2) is located between pressure plate (3) and traction saddle (1) and is located on the outside of connecting rod (4).

2. The spare tire connection structure for a tractor according to claim 1, characterized in that: The pressure plate (3) has a through hole, and the end of the connecting rod (4) away from the hook (6) passes through the through hole and is threaded to the nut (7); The pressure plate (3) is bent upward on both sides to form a first reinforcing rib (301), and the first reinforcing rib (301) is arranged along the length direction of the pressure plate (3).

3. The spare tire connection structure for a tractor according to claim 2, characterized in that: The pressure plate (3) is bent down at both ends to form a limiting part (302), which is located inside the bolt mounting hole of the spare tire (2) hub.

4. The spare tire connection structure for a tractor according to claim 3, characterized in that: The bolt mounting holes where the two limiting parts (302) are located are not axially symmetrical along the axis of the spare tire (2) hub.

5. The spare tire connection structure for a tractor according to claim 1, characterized in that: The width of the limiting plate (5) matches the width of the strip mounting groove (101); There is a gap between the lower end face of the limiting plate (5) and the bottom end of the strip mounting groove (101).

6. The spare tire connection structure for a tractor according to claim 5, characterized in that: The gap between the lower end face of the limiting plate (5) and the bottom end of the strip mounting groove (101) is 1-2cm.

7. The spare tire connection structure for a tractor according to claim 5, characterized in that: One end of the strip mounting groove (101) is a notch, and the side wall of the other end is an arc-shaped surface; The limiting plate (5) is located at the end of the strip mounting groove (101) away from the notch and fits against the arc surface; The hook (6) extends toward the notch of the strip mounting groove (101); The connecting rod (4) is fitted against the inner wall of the mounting hole (102), and the fitting point between the connecting rod (4) and the mounting hole (102) is located in the direction of the notch near the strip mounting groove (101).

8. The spare tire connection structure for a tractor according to claim 1, characterized in that: The two sides of the limiting plate (5) are bent upward to form a second reinforcing rib (501), and the second reinforcing rib (501) corresponds to the inner sidewalls on both sides of the strip mounting groove (101).

9. A spare tire connection structure for a tractor according to claim 1, characterized in that: A square tube (303) is fixed on the end face of the pressure plate (3) near the traction saddle (1), and a positioning block (401) matching the inner side of the square tube (303) is fixed on the connecting rod (4). The positioning block (401) is located on the inner side of the square tube (303).

10. A spare tire connection structure for a tractor according to claim 9, characterized in that: The upper edge of the positioning block (401) has a chamfered structure.

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