Gear shaft assembly of municipal vehicle

Abstract

The utility model relates to the technical field of mechanical transmission parts, and provides a municipal vehicle gear shaft assembly which comprises a gear shaft body and a gear arranged on the surface of the gear shaft body in a sleeved mode, two through grooves are symmetrically formed in the end face of the gear in a penetrating mode, and clamping grooves communicated with the through grooves are formed in one end face of the gear. And the positioning mechanism is arranged between the gear shaft main body and the gear and is used for power transmission and limiting the mounting position of the gear. A gear is arranged on a gear shaft body in a sleeving mode through a positioning mechanism, then a limiting sleeve is connected to the gear shaft body in a threaded mode to abut against the gear, a movable ring is moved to enable an elastic ring to abut against the limiting sleeve, then a fixed bent rod is moved to penetrate into a through groove, the fixed bent rod is pulled to drive the movable ring through a boss to extrude the elastic ring to deform, and meanwhile the fixed bent rod is loosened after being rotated. The fixing bent rod is driven by the elastic ring to be connected with the clamping groove in a clamped mode, so that the limiting sleeve is locked and limited, the effect of stably installing and fixing the gear is achieved, and the installing stability and the using effect of the gear are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical transmission parts, and particularly relates to a gear shaft assembly for a municipal vehicle. Background Art

[0002] A gear shaft, often also referred to as a geared shaft, is a mechanical part that supports rotating parts and rotates with them to transmit motion, torque, or bending moment. It is usually generally in the shape of a metal round rod, with different diameters for each section, and gears are assembled on the surface for transmitting rotational motion and torque. The gear shaft combines the support function of the shaft and the transmission function of the gear, and is commonly found in various mechanical equipment such as automobiles, industrial gearboxes, and reducers.

[0003] In the known prior art, the authorized patent with the application number: CN202320105322.7 discloses a transmission gear shaft assembly. The background art of this patent raises the problem that "the existing transmission gear shaft assembly cannot quickly replace the worn gear body during use". To solve this problem, the technical solution of this patent is "including a gear shaft body, a gear body located outside the gear shaft body, a card slot located outside the gear shaft body, and a second installation pipe is arranged on the outside of the gear shaft body and inside the gear body" and so on.

[0004] However, in the implementation of the related technology, it is found that the above technical solution has the following problems: Although it achieves the effect of facilitating the installation and disassembly and replacement of the gear through the provided technical solution, during its use, it is not convenient to stably install and fix the gear. It installs and limits the position of the gear by means of a threaded connection limiting ring, and there is no locking and limiting structure for the limiting ring. During the use of the gear shaft, the limiting ring is prone to loosen due to the influence of long-term operation vibration and centrifugal force, resulting in axial displacement and crosstalk of the gear, and further reducing the stability of the gear installation and fixation and the use effect. Summary of the Utility Model

[0005] The utility model provides a gear shaft assembly for a municipal vehicle, which solves the problem in the related technology that it is not convenient to stably install and fix the gear.

[0006] The technical solution of the present utility model is as follows: a municipal vehicle gear shaft assembly, including: a gear shaft main body and a gear sleeved on its surface. Two through slots are symmetrically and penetratingly opened on the end face of the gear, and a card slot communicating with the through slot is opened on one end face of the gear; a positioning mechanism arranged between the gear shaft main body and the gear for power transmission and restricting the installation position of the gear; a restricting sleeve threadedly connected to the gear shaft main body through an external thread one and abutting against the gear; an elastic ring and a movable ring respectively sleeved on the surface of the restricting sleeve, the elastic ring can be deformed, and two through holes are symmetrically opened on the movable ring; a fixed bent rod penetrating through the through hole and being engaged with the card slot through the through slot; and a boss fixedly connected to one end of the fixed bent rod and having a diameter larger than its diameter.

[0007] Preferably, a plurality of convex rib blocks are fixedly installed on the surface of the restricting sleeve, and a notch slidably connected with the convex rib blocks is opened on the inner surface of the movable ring.

[0008] Preferably, the positioning mechanism includes a positioning shoulder integrally formed on the surface of the gear shaft main body and abutting against the other end face of the gear, and a plurality of positioning blocks fixedly installed on the surface of the gear shaft main body in a circular array. A positioning slot slidably connected with the positioning blocks is opened on the inner surface of the gear.

[0009] Preferably, reinforcing sleeves are threadedly connected to both ends of the gear shaft main body through external threads two, and a protective layer is coated on the surface of the reinforcing sleeves.

[0010] Preferably, the protective layer includes an anti-rust coating coated on the surface of the reinforcing sleeve and an anti-corrosion coating coated on the surface of the anti-rust coating.

[0011] Preferably, a screw hole is penetratingly opened on the surface of the reinforcing sleeve, and a reinforcing screw abutting against the gear shaft main body is threadedly connected inside the screw hole.

[0012] The working principle and beneficial effects of the present utility model are as follows:

[0013] During use, the gear is sleeved on the gear shaft main body through the positioning mechanism, then the restricting sleeve is threadedly connected to the gear shaft main body and abuts against the gear, and the movable ring is moved so that the elastic ring abuts against the restricting sleeve. Then the fixed bent rod is moved to penetrate through the through slot, and by pulling the fixed bent rod, the movable ring is driven by the boss to extrude the elastic ring to deform. At the same time, the fixed bent rod is rotated and then released, and the fixed bent rod is driven by the elastic ring to be engaged with the card slot, thereby locking and limiting the restricting sleeve. Therefore, the effect of stably installing and fixing the gear is achieved, avoiding the situation that the restricting sleeve rotates and loosens due to vibration and other influences, resulting in the axial displacement of the gear, ensuring the firm installation of the gear, and effectively improving the installation stability and use effect of the gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The following further describes the present utility model in detail with reference to the drawings and specific embodiments.

[0015] Figure 1 is a schematic diagram of the overall three-dimensional structure of the present utility model;

[0016] Figure 2 is a schematic diagram of the side three-dimensional structure of the present utility model;

[0017] Figure 3 is an exploded three-dimensional structure diagram of the tooth shaft main body and the gear of the present utility model;

[0018] Figure 4 is a partial three-dimensional structure diagram of the limiting sleeve of the present utility model;

[0019] Figure 5 is a partial three-dimensional structure diagram of the reinforcing sleeve of the present utility model;

[0020] In the figure: 1. Tooth shaft main body; 2. Gear; 3. Through groove; 4. Limiting sleeve; 5. Elastic ring; 6. Movable ring; 7. Fixed bent rod; 8. Boss; 9. Convex rib block; 10. Positioning shoulder; 11. Positioning block; 12. Positioning groove; 13. Reinforcing sleeve; 14. Screw hole; 15. Reinforcing screw. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0022] Please refer to Figure 1 - Figure 5 As shown, the municipal vehicle tooth shaft assembly provided by the present utility model includes: a tooth shaft main body 1 and a gear 2 sleeved on its surface. Two through grooves 3 are symmetrically penetrated through the end face of the gear 2, and a card slot communicating with the through groove 3 is opened on one end face of the gear 2; a positioning mechanism disposed between the tooth shaft main body 1 and the gear 2 for power transmission and restricting the installation position of the gear 2; a limiting sleeve 4 threadedly connected to the tooth shaft main body 1 through an external thread one and abutting against the gear 2; an elastic ring 5 and a movable ring 6 respectively sleeved on the surface of the limiting sleeve 4. The elastic ring 5 can be deformed, and two through holes are symmetrically opened on the movable ring 6. Among them, the elastic ring 5 is made of rubber material; a fixed bent rod 7 passing through the through hole and cooperating with the card slot through the through groove 3; and a boss 8 fixedly connected to one end of the fixed bent rod 7 and having a diameter larger than its diameter.

[0023] The technical solution provided by this embodiment is as follows: When in use, the gear 2 is installed by sleeving it on the tooth shaft main body 1, and its installation position is positioned and restricted by the positioning mechanism. Then, the tooth shaft assembly is installed inside the gearbox for transmission use. When installing the gear 2 on the tooth shaft main body 1, the gear 2 is sleeved on the installation position of the tooth shaft main body 1 through the positioning mechanism. Then, the limiting sleeve 4 is threadedly connected to the tooth shaft main body 1 so that it abuts against the gear 2. At the same time, the fixed bent rod 7 is aligned with the through slot 3, and the movable ring 6 is moved to drive the elastic ring 5 to abut against the inner end face of the limiting sleeve 4. Then, the fixed bent rod 7 is moved into the through slot 3. At this time, the bent end of the fixed bent rod 7 has not completely passed through the through slot 3. By pulling the bent end of the fixed bent rod 7, the movable ring 6 is driven to move through the boss 8 to apply a force to squeeze the elastic ring 5 to cause it to elastically deform, so that the fixed bent rod 7 completely passes through the through slot 3. At the same time, the fixed bent rod 7 is rotated so that its bent end is aligned with the card slot. Then, the fixed bent rod 7 is released, and the force applied to the elastic ring 5 disappears and it restores. Thus, the elastic force of the elastic ring 5 is used to drive the movable ring 6 and the fixed bent rod 7 to move a short distance away from the gear 2, so that the bent end of the fixed bent rod 7 is clamped into the card slot. Thus, the limiting sleeve 4 is locked and limited through the cooperation of the fixed bent rod 7 and the gear 2, so that it cannot rotate and loosen. On the contrary, when disassembling the gear 2, by applying a force to the fixed bent rod 7 to separate it from the card slot, the restriction on the limiting sleeve 4 can be released. Therefore, the effect of stably installing and fixing the gear 2 is achieved, avoiding the situation that the limiting sleeve 4 rotates and loosens due to vibration and other influences, resulting in the axial displacement of the gear 2, ensuring the installation firmness of the gear 2, and effectively improving the installation stability and use effect of the gear 2.

[0024] Further, a plurality of convex rib blocks 9 are fixedly installed on the surface of the limiting sleeve 4, and notch openings slidably connected to the convex rib blocks 9 are formed on the inner surface of the movable ring 6.

[0025] Specifically, by providing the convex rib blocks 9, it is convenient to rotate the limiting sleeve 4 and threadedly connect it to the tooth shaft main body 1, and the movable ring 6 can move along the surface of the convex rib blocks 9 to prevent the movable ring 6 from rotating axially, ensuring the movement stability of the movable ring 6. At the same time, after the fixed bent rod 7 is clamped with the card slot, the convex rib blocks 9 and the notch openings cooperate to limit the rotation of the limiting sleeve 4, avoiding the self-rotation and loosening of the limiting sleeve 4 during use, thereby further improving the installation stability of the gear 2.

[0026] Further, the positioning mechanism includes a positioning shoulder 10 integrally formed on the surface of the tooth shaft main body 1 and abutting against the other end face of the gear 2, and a plurality of positioning blocks 11 fixedly installed on the surface of the tooth shaft main body 1 in a circular array. Positioning grooves 12 slidably connected to the positioning blocks 11 are formed on the inner surface of the gear 2.

[0027] Specifically, when installing the gear 2, the gear 2 is sleeved on the tooth shaft body 1, and the position of the gear 2 is adjusted so that the positioning groove 12 and the positioning block 11 are aligned. Then, the gear 2 is moved and slides along the positioning block 11 through the cooperation of the positioning groove 12 until the gear 2 abuts against the positioning shoulder 10, which facilitates the subsequent installation and fixation of the gear 2 through the cooperation of the positioning shoulder 10 and the limiting sleeve 4. At the same time, when the tooth shaft body 1 rotates, power transmission is carried out through the cooperation of the positioning block 11 and the positioning groove 12, enabling the gear 2 to rotate with the tooth shaft body 1.

[0028] Furthermore, both ends of the tooth shaft body 1 are thread - connected with reinforcing sleeves 13 through external threads II, and the surface of the reinforcing sleeves 13 is coated with a protective layer.

[0029] The protective layer includes an anti - rust coating applied on the surface of the reinforcing sleeve 13 and an anti - corrosion coating applied on the surface of the anti - rust coating. Among them, the anti - rust coating can be a zinc coating or an anti - rust oil film layer, and the anti - corrosion coating can be an epoxy resin paint or a polyurethane paint. There is no unique limitation here, as long as the anti - rust and anti - corrosion effects are achieved.

[0030] Specifically, the reinforcing sleeve 13 is installed on the tooth shaft body 1 through external threads II, which is convenient for strengthening the structural strength at both ends of the tooth shaft assembly. At the same time, the cooperation with the protective layer can enhance the anti - rust and anti - corrosion properties of the reinforcing sleeve 13, thus facilitating the extension of the service life of the tooth shaft assembly.

[0031] As a further improvement of the present utility model:

[0032] Based on the above, a screw hole 14 is penetrated through the surface of the reinforcing sleeve 13, and an internal thread connection is provided in the screw hole 14 with a reinforcing screw 15 that abuts against the tooth shaft body 1. Among them, the reinforcing screw 15 is an internal six - hole screw.

[0033] The technical solution provided in this embodiment is: after the reinforcing sleeve 13 is installed on the tooth shaft body 1, by screwing the reinforcing screw 15 into the screw hole 14 and making the end of the reinforcing screw 15 abut against the tooth shaft body 1, the role of strengthening the reinforcing sleeve 13 can be achieved, preventing the reinforcing sleeve 13 from loosening during use and ensuring the installation stability and use effect of the reinforcing sleeve 13.

[0034] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. Municipal vehicle gear shaft assembly, characterized in that: include: A gear shaft body (1) and a gear (2) sleeved on the surface thereof, wherein the end surface of the gear (2) is symmetrically provided with two through grooves (3), and one end surface of the gear (2) is provided with a slot connected to the through groove (3); A positioning mechanism provided between the gear shaft body (1) and the gear (2) for power transmission and limiting the installation position of the gear (2); A limiting sleeve (4) threadably connected to the gear shaft body (1) via an external thread and abutting against the gear (2); An elastic ring (5) and a movable ring (6) are respectively sleeved on the surface of the limiting sleeve (4), wherein the elastic ring (5) can be deformed, and the movable ring (6) has two through holes symmetrically formed thereon; A fixed bent rod (7) which is inserted into the through hole and passes through the through slot (3) and is engaged with the engaging slot; and a boss (8) fixedly connected to one end of the fixed bent rod (7) and having a diameter larger than the diameter of the fixed bent rod (7).

2. The municipal vehicle gear shaft assembly according to claim 1, characterized in that: A plurality of convex blocks (9) are fixedly mounted on the surface of the limiting sleeve (4), and the inner surface of the movable ring (6) is provided with slots that are slidably connected to the convex blocks (9).

3. The municipal vehicle gear shaft assembly according to claim 1, characterized in that: The positioning mechanism comprises a positioning shoulder (10) integrally formed on the surface of the gear shaft body (1) and abutting against the other end surface of the gear (2), and a plurality of positioning blocks (11) fixedly mounted in a circular array on the surface of the gear shaft body (1), and the inner surface of the gear (2) is provided with a positioning groove (12) slidably connected to the positioning block (11).

4. The municipal gear shaft assembly according to claim 1, characterized in that: Both end surfaces of the gear shaft body (1) are threadedly connected to a reinforcing sleeve (13) via two external threads, and the surface of the reinforcing sleeve (13) is coated with a protective layer.

5. The municipal vehicle gear shaft assembly according to claim 4, characterized in that: The protective layer comprises an anti-rust coating applied on the surface of the reinforcing sleeve (13), and an anti-corrosion coating applied on the surface of the anti-rust coating.

6. The municipal vehicle gear shaft assembly according to claim 4, characterized in that: A screw hole (14) is formed through the surface of the reinforcing sleeve (13), and a reinforcing screw (15) abutting against the gear shaft body (1) is connected to the inner thread of the screw hole (14).

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