Bearing supporting structure of high-pressure cleaning machine

Abstract

The utility model provides a bearing supporting structure of a high-pressure cleaning machine, and belongs to the technical field of high-pressure cleaning machines. The bearing supporting structure solves the problem that an existing bearing supporting structure is high in installation difficulty. The bearing supporting structure of the high-pressure cleaning machine comprises an oil cylinder box body, a gear shaft, a first bearing, a second bearing and a large gear, a barrel-shaped installation cavity is formed in the oil cylinder box body, a small gear arranged on a motor shaft in a sleeving mode and meshed with the large gear is installed in the oil cylinder box body, and the middle of the gear shaft protrudes outwards in the radial direction to form a connecting part; the gear shaft is sequentially arranged on the first bearing, the large gear and the second bearing in a sleeving mode in the axial direction, the large gear is connected to the connecting part in a sleeving mode, the first bearing is located in the mounting cavity, a bearing support is arranged between the first bearing and the cavity wall of the mounting cavity, and all the parts are inserted into the mounting cavity. According to the structure, the convenience of maintenance is improved, the mounting difficulty of the bearing supporting structure is also simplified, and the mounting stability of the first bearing is ensured.

Description

Technical Field

[0001] This utility model belongs to the technical field of high-pressure cleaners and relates to a bearing support structure for a high-pressure cleaner. Background Technology

[0002] A high-pressure washer is a machine that uses a power unit to drive a high-pressure plunger pump to generate high-pressure water to rinse the surface of an object. It can peel off and wash away dirt, thus achieving the purpose of cleaning the surface of an object.

[0003] For example, Chinese patent application [Authorization Announcement No.: CN209228957U] discloses an internal gear component and an internal meshing transmission structure, including a transmission box device and a motor assembly. The transmission box device includes an internal gear component, and a driven shaft is circumferentially fixedly installed in the driven mounting hole. The motor assembly includes a motor shaft, and an external gear is circumferentially fixedly installed on the motor shaft. The external gear is eccentrically meshed on the internal gear ring portion. The external gear and the internal gear component together form a speed change structure. The motor shaft and the driven shaft are respectively equipped with a first bearing and a second bearing.

[0004] When assembling the driven shaft and other components of the aforementioned patent, it is necessary to fit the external gear and the large bearing onto the driven shaft at both ends, and the outer wall is circumferentially limited by the housing. This makes the installation of the driven shaft, the large bearing, and the external gear inside the housing more difficult, increases the assembly cost, and also prevents them from being quickly installed and removed during maintenance, thus reducing maintenance efficiency. Summary of the Invention

[0005] The purpose of this utility model is to address the aforementioned problems in the existing technology by proposing a bearing support structure for a high-pressure cleaner. The technical problem to be solved by this utility model is: how to solve the problem of the high installation difficulty of the existing bearing support structure.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A bearing support structure for a high-pressure washer includes a cylinder housing, a gear shaft, a first bearing, a second bearing, and a large gear. The cylinder housing has a cylindrical mounting cavity. A small gear, fitted onto a motor shaft and meshing with the large gear, is installed inside the cylinder housing. The gear shaft has a radially outwardly protruding connecting portion at its center. The gear shaft is axially fitted with the first bearing, the large gear, and the second bearing in sequence. The large gear is fitted onto the connecting portion. The first bearing is located within the mounting cavity, and a bearing bracket is provided between the first bearing and the cavity wall. The gear shaft, the first bearing, the large gear, the second bearing, and the bearing bracket are all inserted into the mounting cavity.

[0008] By first sequentially mounting the first bearing, the large gear, and the second bearing onto the gear shaft, with the large gear fitting onto the connecting part of the gear shaft, and a bearing bracket mounted on the first bearing, the gear shaft, the first bearing, the large gear, the second bearing, and the bearing bracket are simultaneously inserted into the mounting cavity. This achieves a modular structure and quick assembly / disassembly of the bearing support structure. Furthermore, the bearing bracket facilitates the positioning of the first bearing, enabling rapid installation. When maintenance is required, the gear shaft and all components mounted on it can be removed directly without removing the entire cylinder housing, thus improving maintenance convenience and simplifying the installation of the bearing support structure. The addition of the bearing bracket also ensures the installation stability of the first bearing.

[0009] In the bearing support structure of the high-pressure cleaner described above, the bearing bracket protrudes inward at one end near the connecting part to form a limiting stop, and the outer ring of the first bearing abuts against the limiting stop.

[0010] The limiting stop edge enables the first bearing to be positioned axially, facilitating the quick installation of the first bearing and ensuring its stable placement within the mounting cavity. This also facilitates the quick removal of the first bearing during subsequent maintenance, improving the ease of installation and removal.

[0011] In the bearing support structure of the high-pressure cleaner described above, the wall of the mounting cavity has a support flange, and multiple anti-rotation grooves are provided on the support flange. The end of the bearing bracket near the connecting part protrudes downward to form an anti-rotation rib that corresponds to the anti-rotation groove. When the bearing bracket is axially embedded into the mounting cavity until it abuts against the support flange, the anti-rotation rib is embedded in the corresponding anti-rotation groove.

[0012] The anti-rotation groove serves two purposes: firstly, it facilitates the installation of the bearing bracket, and secondly, it prevents the bearing bracket from rotating circumferentially, thereby improving the stability of the first bearing support and positioning.

[0013] In the bearing support structure of the high-pressure cleaner described above, a fixing groove is provided on the outer side wall of the bearing bracket, and a shock-absorbing ring is provided in the fixing groove. The outer wall of the shock-absorbing ring abuts against the cavity wall of the mounting cavity.

[0014] The installation of the damping ring reduces the vibration impact of the bearing bracket on the cylinder housing and improves the stability of the bearing bracket installation.

[0015] In the bearing support structure of the high-pressure cleaner described above, the mounting cavity has a first bearing mounting chamber and a second bearing mounting chamber. The first bearing mounting chamber is located above the bearing bracket, and the second bearing mounting chamber is located at the bottom of the mounting cavity. The first bearing is located in the first bearing mounting chamber, and the second bearing is located in the second bearing mounting chamber.

[0016] The inclusion of a first bearing mounting chamber and a second bearing mounting chamber makes the installation of the first bearing and the positioning of the second bearing more convenient and easier.

[0017] In the bearing support structure of the high-pressure cleaner described above, there is always a clearance between the bearing bracket and the gear shaft.

[0018] The clearance setting ensures that the bearing bracket will not affect the rotation of the gear shaft, enabling quick assembly and disassembly while also guaranteeing the stability of the bearing support structure.

[0019] Compared with existing technologies, the bearing support structure of this high-pressure cleaner has the following advantages: by first sequentially mounting the first bearing, the large gear, and the second bearing onto the gear shaft, with the large gear being fitted onto the connecting part of the gear shaft, and a bearing bracket mounted on the first bearing, the gear shaft, the first bearing, the large gear, the second bearing, and the bearing bracket are all inserted into the mounting cavity, a modular structure and quick assembly / disassembly of the bearing support structure are achieved. Furthermore, the bearing bracket facilitates the positioning of the first bearing, thereby enabling rapid installation. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of the present invention.

[0021] Figure 2 This is a schematic diagram of the bearing bracket in this utility model.

[0022] Figure 3 This is a partial structural schematic diagram of the present invention.

[0023] In the diagram, 1 is the cylinder housing; 11 is the mounting cavity; 11a is the support flange; 11b is the anti-rotation groove; 2 is the first bearing; 3 is the second bearing; 4 is the large gear; 5 is the motor shaft; 51 is the small gear; 6 is the gear shaft; 61 is the connecting part; 7 is the bearing bracket; 71 is the limit stop; 72 is the anti-rotation rib; 73 is the fixing groove; 8 is the shock absorber ring; and 9 is the clearance. Detailed Implementation

[0024] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0025] like Figure 1 As shown, the bearing support structure of this high-pressure cleaner includes a cylinder housing 1, a gear shaft 6, a first bearing 2, a second bearing 3, and a large gear 4. The cylinder housing 1 has a cylindrical mounting cavity 11, and a small gear 51 that is sleeved on the motor shaft 5 and meshes with the large gear 4 is installed inside the cylinder housing 1.

[0026] Specifically, such as Figure 1-3As shown, the gear shaft 6 has a radially outward protrusion in the middle to form a connecting part 61. The gear shaft 6 is axially sleeved with the first bearing 2, the large gear 4, and the second bearing 3. The large gear 4 is sleeved on the connecting part 61. The first bearing 2 is located in the mounting cavity 11, and a bearing bracket 7 is provided between the first bearing 2 and the cavity wall of the mounting cavity 11. The gear shaft 6, the first bearing 2, the large gear 4, the second bearing 3, and the bearing bracket 7 are all inserted into the mounting cavity 11.

[0027] By first sequentially mounting the first bearing 2, the large gear 4, and the second bearing 3 onto the gear shaft 6, with the large gear 4 fitting onto the connecting part 61 of the gear shaft 6, and a bearing bracket 7 mounted on the first bearing 2, and then inserting the gear shaft 6, the first bearing 2, the large gear 4, the second bearing 3, and the bearing bracket 7 together into the mounting cavity 11, a modular structure and quick assembly / disassembly of the bearing support structure are achieved. Furthermore, the bearing bracket 7 facilitates the positioning of the first bearing 2, enabling rapid installation. When maintenance is required, the gear shaft 6 and all components mounted on it can be removed directly without removing the entire cylinder housing 1, thus improving maintenance convenience and simplifying the installation difficulty of the bearing support structure. Additionally, the addition of the bearing bracket 7 ensures the installation stability of the first bearing 2.

[0028] like Figure 1 and Figure 3 As shown, the bearing bracket 7 protrudes inward at one end near the connecting part 61 to form a limiting stop 71. The outer ring of the first bearing 2 abuts against the limiting stop 71. The mounting cavity 11 has a first bearing mounting chamber 110 and a second bearing mounting chamber 111. The first bearing mounting chamber 110 is located above the bearing bracket 7, and the second bearing mounting chamber 111 is located at the bottom of the mounting cavity 11. The first bearing 2 is located in the first bearing mounting chamber 110, and the second bearing 3 is located in the second bearing mounting chamber 111.

[0029] like Figure 1-3 As shown, the wall of the mounting cavity 11 has a supporting flange 11a, and multiple anti-rotation grooves 11b are provided on the supporting flange 11a. The end of the bearing bracket 7 near the connecting part 61 protrudes downward to form an anti-rotation rib 72 that corresponds to the anti-rotation groove 11b. When the bearing bracket 7 is axially embedded into the mounting cavity 11 until it abuts against the supporting flange 11a, the anti-rotation rib 72 is embedded in the corresponding anti-rotation groove 11b. A fixing groove 73 is provided on the outer wall of the bearing bracket 7, and a shock-absorbing ring 8 is provided in the fixing groove 73. The outer wall of the shock-absorbing ring 8 abuts against the cavity wall of the mounting cavity 11. There is always a clearance gap 9 between the bearing bracket 7 and the gear shaft 6.

[0030] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A bearing support structure for a high-pressure washer, comprising a cylinder housing (1), a gear shaft (6), a first bearing (2), a second bearing (3), and a large gear (4), wherein the cylinder housing (1) has a cylindrical mounting cavity (11), and a small gear (51) sleeved on a motor shaft (5) and meshing with the large gear (4) is installed inside the cylinder housing (1), characterized in that, The gear shaft (6) has a radially outward protrusion in the middle to form a connecting part (61). The gear shaft (6) is axially fitted with a first bearing (2), a large gear (4), and a second bearing (3). The large gear (4) is fitted onto the connecting part (61). The first bearing (2) is located in the mounting cavity (11), and a bearing bracket (7) is provided between the first bearing (2) and the cavity wall of the mounting cavity (11). The gear shaft (6), the first bearing (2), the large gear (4), the second bearing (3), and the bearing bracket (7) are all inserted into the mounting cavity (11).

2. The bearing support structure of the high-pressure cleaner according to claim 1, characterized in that, The bearing bracket (7) protrudes inward at one end near the connecting part (61) to form a limiting stop (71), and the outer ring of the first bearing (2) abuts against the limiting stop (71).

3. The bearing support structure of the high-pressure cleaner according to claim 1 or 2, characterized in that, The wall of the mounting cavity (11) has a supporting flange (11a), and a plurality of anti-rotation grooves (11b) are provided on the supporting flange (11a). The bearing bracket (7) near the connecting part (61) protrudes downward to form an anti-rotation rib (72) that corresponds to the anti-rotation groove (11b). When the bearing bracket (7) is axially embedded into the mounting cavity (11) and abuts against the supporting flange (11a), the anti-rotation rib (72) is embedded in the corresponding anti-rotation groove (11b).

4. The bearing support structure of the high-pressure cleaner according to claim 1 or 2, characterized in that, A fixing groove (73) is provided on the outer side wall of the bearing bracket (7), and a shock-absorbing ring (8) is provided in the fixing groove (73). The outer wall of the shock-absorbing ring (8) abuts against the cavity wall of the mounting cavity (11).

5. The bearing support structure of the high-pressure cleaner according to claim 1 or 2, characterized in that, The mounting cavity (11) has a first bearing mounting chamber (110) and a second bearing mounting chamber (111). The first bearing mounting chamber (110) is located above the bearing bracket (7), and the second bearing mounting chamber (111) is located at the bottom of the mounting cavity (11). The first bearing (2) is located in the first bearing mounting chamber (110), and the second bearing (3) is located in the second bearing mounting chamber (111).

6. The bearing support structure of the high-pressure cleaner according to claim 1 or 2, characterized in that, There is always a clearance (9) between the bearing bracket (7) and the gear shaft (6).

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