Dustproof bridge shield of tractor

Abstract

The utility model relates to the technical field of protective devices, in particular to a dustproof bridge protective cover of a tractor, which comprises a connecting disc fixedly arranged at the end of a front axle of the tractor, the connecting disc is connected with a protective cover through a connecting assembly, an annular mounting cavity is arranged in the protective cover along the circumferential side wall of the protective cover, and the connecting assembly comprises an inner gear ring rotationally arranged on the inner wall of the annular mounting cavity. The outer ring surface of the inner gear ring is fixedly connected with a rotating sleeve through a connecting ring, and the rotating sleeve is rotatably arranged on the outer surface of the circumferential side wall of the protective cover; a plurality of fluted discs are meshed with the inner ring face of the inner gear ring, each fluted disc is fixedly connected with a threaded column, and first threaded holes corresponding to the threaded columns in number and position are formed in the connecting disc. According to the scheme, the protective cover can be quickly mounted without carrying bolts, the mounting and dismounting efficiency is effectively improved, and the sealing performance of the end of the front axle of the tractor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of protective devices, in particular to a dustproof bridge guard for a tractor. Background Art

[0002] The front drive axle of a tractor generally refers to a transmission device between a tractor engine and a front drive shaft. An existing patent discloses a novel split drive shaft structure of a front drive axle of a tractor. Patent publication number CN217705374U includes a connecting plate, an end cover and a terminal transmission box. A drive shaft is arranged in the terminal transmission box, and the drive shaft is rotatably connected to the terminal transmission box. The connecting plate includes a sleeve, and the sleeve of the connecting plate extends toward the terminal section transmission box. An internal spline is arranged on the inner side of the sleeve, and an external spline is arranged on the outer side of the drive shaft. The internal spline cooperates with the external spline. The utility model changes the integral design of the existing drive shaft and divides it into a drive shaft and a connecting plate connected by splines. Such a design makes it easier to pick up, replace and maintain the connecting plate or the drive shaft, and can process individual parts, thereby reducing the processing cost.

[0003] With respect to the above-mentioned related technologies, the inventors believe that the following defects exist: the function of the end cover in the above-mentioned patent technology is to perform dust-proof treatment on the inside of the drive shaft to achieve the purpose of protection, but the above-mentioned end cover is installed and connected to the connecting plate by bolts, which makes the installation or disassembly of the end cover very cumbersome and the bolts are prone to falling and losing, thereby reducing the efficiency of installation and disassembly. Utility Model Content

[0004] In order to solve the problems existing in the background technology, the utility model proposes a dustproof bridge guard for a tractor, comprising a connecting plate fixedly arranged at the end of the front axle of the tractor, the connecting plate being connected to a guard through a connecting assembly, an annular mounting cavity being provided in the guard along its circumferential side wall, the connecting assembly comprising an inner gear ring rotatably arranged on the inner wall of the annular mounting cavity, the outer ring surface of the inner gear ring being fixedly connected to a rotating sleeve through a connecting ring, the rotating sleeve being rotatably arranged on the outer surface of the circumferential side wall of the guard; the inner ring surface of the inner gear ring is meshed with a plurality of toothed discs, each of the toothed discs is fixedly connected with a threaded column, and the connecting plate is provided with a first threaded hole corresponding to the number and position of the threaded column.

[0005] Furthermore, a brake ring is fixedly connected to the end face on either side of the inner gear ring, and a second threaded hole is provided on the circumferential side wall of the protective cover, and a brake bolt is threadedly connected to the second threaded hole, one end of the brake bolt is abutted against the brake ring, and the other end of the brake bolt is screwed into the second threaded hole and extends out of the circumferential side wall of the protective cover.

[0006] Furthermore, at least two brake bolts are symmetrically arranged.

[0007] Furthermore, a brake rubber pad is fixed to one end of the brake ring close to the brake bolt, and one end of the brake bolt close to the brake ring is in contact with the brake rubber pad.

[0008] Furthermore, a penetrating annular opening is provided on the circumferential side wall of the protective cover, and the connecting ring is slidably arranged in the annular opening.

[0009] Furthermore, the plurality of toothed discs are distributed in a circular array, and the toothed discs and the threaded columns are connected via a rotating rod.

[0010] Furthermore, a limiting ring for limiting the protective cover is provided on the connecting plate.

[0011] Furthermore, an inner sealing ring and an outer sealing ring are provided on the end surface where the protective cover is connected to the connecting plate, and the threaded column is provided between the inner sealing ring and the outer sealing ring.

[0012] Furthermore, a plurality of concave grooves are provided on the outer annular surface of the rotating sleeve.

[0013] The beneficial effects of the utility model are as follows: the dustproof bridge guard in the utility model can realize quick installation of the guard by setting a connecting assembly, without carrying bolts, thereby effectively improving the efficiency of installation and disassembly, and after installation, the brake bolt can be screwed to make the brake bolt and the surface of the brake ring tightly abut against each other to realize effective braking of the inner gear ring, and after installation, the guard can effectively seal the gap between the guard and the connecting plate under the action of the sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0016] Figure 3 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0017] Figure 4 The three-dimensional structure of the utility model after the protective cover and the connecting plate are separated Figure 1 ;

[0018] Figure 5 The three-dimensional structure of the utility model after the protective cover and the connecting plate are separated Figure 2 .

[0019] In the figure: 100, connecting disk; 101, limiting ring; 200, protective cover; 300, connecting assembly; 301, annular mounting cavity; 302, threaded column; 303, first threaded hole; 304, rotating rod; 305, toothed disk; 306, inner toothed ring; 307, rotating sleeve; 308, connecting ring; 309, annular opening; 3010, brake bolt; 3011, brake ring; 3012, brake rubber pad; 3013, inner sealing ring; 3014, outer sealing ring. DETAILED DESCRIPTION

[0020] In order to make the present invention clearer and more understandable, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the given embodiment is only one implementation method and does not represent all embodiments.

[0021] Combination Figure 1-Figure 5 The present embodiment provides a dustproof bridge shield for a tractor, comprising a connecting plate 100 fixedly arranged at the end of the front axle of the tractor, the connecting plate 100 being connected to a shield 200 through a connecting assembly 300, an annular mounting cavity 301 being arranged in the shield 200 along its circumferential side wall, the connecting assembly 300 comprising an inner gear ring 306 rotatably arranged on the inner wall of the annular mounting cavity 301, the outer ring surface of the inner gear ring 306 being fixedly connected to a rotating sleeve 307 through a connecting ring 308, the rotating sleeve 307 being rotatably arranged on the outer surface of the circumferential side wall of the shield 200; the inner ring surface of the inner gear ring 306 being meshed with a plurality of toothed plates 305, each of the toothed plates 305 being fixedly connected to a threaded column 302, and the connecting plate 100 being provided with first threaded holes 303 corresponding to the number and position of the threaded columns 302. Preferably, the first threaded holes 303 are cylindrical threaded holes, the threaded connection area is larger, and the tightening effect is better. The dustproof bridge guard of the tractor can realize the rapid installation of the guard 200 by providing the connection assembly 300, and no bolts need to be carried, thereby effectively improving the efficiency of installation and disassembly.

[0022] Specifically, the plurality of toothed discs 305 are distributed in a circumferential array, and the toothed discs 305 and the threaded posts 302 are connected via a rotating rod 304. In order to tighten the connection between the protective cover 200 and the connecting disc 100, six threaded posts 302 are provided in this embodiment, and the circumferential array is distributed on the protective cover 200, and six corresponding toothed discs 305 and first threaded holes 303 are also provided.

[0023] Specifically, the end surface of either side of the inner gear ring 306 is fixedly connected with a brake ring 3011, and a second threaded hole is provided on the circumferential side wall of the protective cover 200, and the second threaded hole is threadedly connected with a brake bolt 3010, one end of the brake bolt 3010 is abutted against the brake ring 3011, and the other end of the brake bolt 3010 is screwed into the second threaded hole and extends out of the circumferential side wall of the protective cover 200. Preferably, the brake ring 3011 is arranged on a side of the inner gear ring 306 close to the threaded column 302, which is more conducive to the installation operation. After the protective cover 200 and the connecting plate 100 are installed, the brake bolt 3010 can be screwed to make the brake bolt 3010 and the surface of the brake ring 3011 tightly abut, so as to achieve effective braking of the inner gear ring 306. In this embodiment, two brake bolts 3010 are symmetrically arranged. The symmetrical arrangement makes the two brake bolts 3010 act inwardly, which is more conducive to fastening the brake ring 3011. It should be understood that multiple brake bolts 3010 can also be arranged. The multiple brake bolts 3010 can be evenly distributed and symmetrically arranged in pairs. As an advantage, a brake rubber pad 3012 is fixed to one end of the brake ring 3011 close to the brake bolt 3010. The end of the brake bolt 3010 close to the brake ring 3011 is in contact with the brake rubber pad 3012. The brake rubber pad 3012 can increase the friction between the brake bolt 3010 and the brake ring 3011 to avoid slipping.

[0024] Specifically, the circumferential side wall of the protective cover 200 is provided with a penetrating annular opening 309, and the connecting ring 308 is slidably arranged in the annular opening 309. Preferably, the diameter of the annular opening 309 is larger than the diameter of the connecting ring 308, so that the rotating sleeve 307 can smoothly rotate the inner gear ring 306 through the connecting ring 308.

[0025] Specifically, a limiting ring 101 for limiting the position of the protective cover 200 is provided on the connecting disk 100 , so that the user can quickly connect and install the protective cover 200 with the connecting disk 100 .

[0026] Specifically, an inner sealing ring 3013 and an outer sealing ring 3014 are provided on the end surface where the protective cover 200 is connected to the connecting disk 100, and the threaded column 302 is arranged between the inner sealing ring 3013 and the outer sealing ring 3014. Preferably, the inner sealing ring 3013 and the outer sealing ring 3014 are arranged along the entire circumference of the outer edge of the protective cover 200 to seal the gap between the protective cover 200 and the connecting disk 100, thereby effectively ensuring the sealing of the two after the connection.

[0027] Specifically, a plurality of concave grooves are provided on the outer ring surface of the rotating sleeve 307 to increase the friction between the rotating sleeve 307 and the user's hand, so as to facilitate the user to operate the rotating sleeve 307 .

[0028] Working method: When the protective cover 200 is installed with the connecting disk 100, the limiting ring 101 on the connecting disk 100 facilitates the docking of the protective cover 200, and then the threaded column 302 on the protective cover 200 is matched with the first threaded hole 303 on the connecting disk 100 one by one, and then the rotating sleeve 307 on the protective cover 200 is rotated, and then the inner gear ring 306 is driven to rotate through the connecting ring 308. The rotation of the inner gear ring 306 drives the six toothed disks 305 meshing therewith to rotate at the same time, and then drives the six threaded columns 302 to rotate at the same time, so that the six threaded columns 302 can be screwed into the six first threaded holes 303 respectively, so as to realize the rapid installation of the protective cover 200, and no bolts need to be carried, which effectively improves the efficiency of installation and disassembly. After installation, the brake bolt 3010 is screwed to make the brake bolt 3010 and the surface of the brake ring 3011 tightly pressed to realize the effective braking of the inner gear ring 306.

[0029] The above is a detailed description of the specific implementation of the utility model in conjunction with the drawings, but the utility model is not limited to the described implementation. For those skilled in the art, without departing from the principle and spirit of the utility model, various changes, modifications, substitutions and variations are made to these implementations, which still fall within the scope of protection of the utility model.

Claims

1. A dustproof bridge shield for a tractor, comprising a connecting plate (100) fixedly mounted on the end of the front bridge of the tractor, characterized in that: The connecting disk (100) is connected to the protective cover (200) through a connecting assembly (300); an annular installation cavity (301) is provided inside the protective cover (200) along its circumferential side wall; the connecting assembly (300) comprises an inner toothed ring (306) rotatably arranged on the inner wall of the annular installation cavity (301); the outer ring surface of the inner toothed ring (306) is fixedly connected to a rotating sleeve (307) through a connecting ring (308); the rotating sleeve (307) is rotatably arranged on the outer surface of the circumferential side wall of the protective cover (200); the inner ring surface of the inner toothed ring (306) is meshed with a plurality of toothed disks (305); each of the toothed disks (305) is fixedly connected to a threaded column (302); and the connecting disk (100) is provided with first threaded holes (303) corresponding in number and position to the threaded columns (302).

2. The dustproof bridge guard for a tractor according to claim 1, characterized in that: A brake ring (3011) is fixedly connected to the end face on either side of the inner gear ring (306), and a second threaded hole is provided on the circumferential side wall of the protective cover (200), and a brake bolt (3010) is threadedly connected to the second threaded hole, and one end of the brake bolt (3010) is abutted against the brake ring (3011), and the other end of the brake bolt (3010) is screwed into the second threaded hole and extends out of the circumferential side wall of the protective cover (200).

3. The dustproof bridge guard for a tractor according to claim 2, characterized in that: At least two of the brake bolts (3010) are symmetrically arranged.

4. The dustproof bridge guard for a tractor according to claim 3, characterized in that: A brake rubber pad (3012) is fixed to one end of the brake ring (3011) close to the brake bolt (3010), and one end of the brake bolt (3010) close to the brake ring (3011) is in contact with the brake rubber pad (3012).

5. The dustproof bridge guard for a tractor according to claim 1, characterized in that: A penetrating annular opening (309) is provided on the circumferential side wall of the protective cover (200), and the connecting ring (308) is slidably arranged in the annular opening (309).

6. The dustproof bridge guard for a tractor according to claim 1, characterized in that: The plurality of toothed discs (305) are distributed in a circular array, and the toothed discs (305) and the threaded column (302) are connected via a rotating rod (304).

7. The dustproof bridge guard for a tractor according to claim 1, characterized in that: The connection disk (100) is provided with a limiting ring (101) for limiting the protective cover (200).

8. The dustproof bridge guard for a tractor according to claim 1, characterized in that: An inner sealing ring (3013) and an outer sealing ring (3014) are provided on the end surface where the protective cover (200) is connected to the connecting plate (100), and the threaded column (302) is provided between the inner sealing ring (3013) and the outer sealing ring (3014).

9. The dustproof bridge guard for a tractor according to claim 1, characterized in that: The outer ring surface of the rotating sleeve (307) is provided with a plurality of concave grooves.

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