Roller mounting structure of high-pressure cleaning machine

Abstract

The utility model provides a roller mounting structure of a high-pressure cleaning machine, and belongs to the technical field of high-pressure cleaning machines. The problems that an existing machine shell mold is complex in structure, the mold cost is low, and the machine shell injection molding time is long are solved. The idler wheel installation structure of the high-pressure cleaning machine comprises a machine shell and idler wheels arranged at the bottom of the machine shell, an installation groove is formed in the back face of the bottom of the machine shell, the installation groove is provided with a rear installation opening and a side installation opening, the idler wheels are provided with installation shafts, and the installation shafts are installed in the installation groove through the rear installation opening. A pressing plate wrapping the mounting shaft is arranged at the position, corresponding to the mounting groove, of the machine shell, and axial limiting structures are arranged between the mounting shaft and the mounting groove and between the mounting shaft and the pressing plate. According to the structure, a structure of a core-pulling sliding block on a shell mold is omitted, the complexity of the mold structure is remarkably reduced, meanwhile, the manufacturing cost of the mold is reduced, and meanwhile, the injection molding time of the shell is shortened.

Description

Technical Field

[0001] The utility model belongs to the technical field of high-pressure cleaning machines, in particular to a roller installation structure of a high-pressure cleaning machine. Background Art

[0002] A high-pressure cleaner is a machine that uses a power device to make a high-pressure plunger pump generate high-pressure water to wash the surface of an object. It can peel off and wash away dirt, thereby achieving the purpose of cleaning the surface of the object. The bottom of existing high-pressure cleaners are all provided with rollers, and the setting of the rollers facilitates the movement of the high-pressure cleaner. For example, the China Patent Network discloses a high-pressure cleaner [Authorization Announcement No.: CN206676808U], which includes a vertical body with rollers on both sides of the bottom of the body. The existing rollers are generally installed on the casing through a rotating shaft, so it is necessary to open a mounting hole on the casing to facilitate the insertion of the rotating shaft into the mounting hole. The casing is generally injection molded, and the molding of the mounting hole requires a core-pulling process, that is, a core-pulling slider needs to be provided on the mold, which greatly increases the cost of the mold and increases the injection molding time of the product. Utility Model Content

[0003] The purpose of this utility model is to address the above-mentioned problems in the existing technology and propose a roller installation structure for a high-pressure cleaning machine. The technical problem to be solved by this utility model is: how to solve the problems of complex mold structure, mold cost and long injection molding time of the existing casing.

[0004] The purpose of this utility model can be achieved through the following technical solutions:

[0005] A roller mounting structure for a high-pressure cleaning machine includes a casing and a roller arranged at the bottom of the casing, characterized in that a mounting groove is provided on the back side of the bottom of the casing, the mounting groove has a rear mounting port and a side mounting port, the roller has a mounting shaft, the mounting shaft is installed into the mounting groove through the rear mounting port, a pressure plate covering the mounting shaft is provided at a position of the casing corresponding to the mounting groove, and an axial limiting structure is provided between the mounting shaft, the mounting groove and the pressure plate.

[0006] This structure features a mounting slot on the back of the housing bottom, into which the mounting shaft is inserted. Finally, a pressure plate is secured to the housing, completely enclosing the shaft. An axial limiter ensures the shaft can rotate without falling out of the slot. During molding, the mounting slot can be formed using bumps on the inner wall of the mold cavity. This eliminates the core-pulling slider structure in the housing mold, significantly reducing mold complexity, manufacturing costs, and the time required for injection molding the housing.

[0007] In the above-mentioned roller mounting structure of a high-pressure cleaning machine, the mounting groove has an arc-shaped rotating wall 1, the rotating wall 1 has an arc-shaped limiting groove 1 opened along its arc square, the inner side of the pressure plate has an arc-shaped rotating wall 2, the rotating wall 2 has an arc-shaped limiting groove 2 opened along its arc square, the outer circumferential surface of the mounting shaft is in contact with the rotating wall 1 and the rotating wall 2, and the outer circumferential surface of the mounting shaft has a sliding protrusion slidably arranged in the limiting groove 1 and the limiting groove 2. When installing the mounting shaft, insert the mounting shaft into the mounting groove from the rear mounting opening so that the sliding protrusion is inserted into the limit groove 1. At this time, the mounting shaft passes through the side mounting opening and is located in the mounting groove, the outer circumferential surface of the mounting shaft fits with the rotating wall 1, and part of the mounting shaft is located outside the mounting groove. Then, the pressure plate is fixed on the casing so that the rotating wall 2 fits with the outer circumferential surface of the mounting shaft, and the limit groove 2 is connected to the limit groove 1. The sliding protrusion can slide in the limit groove 1 and the limit groove 2. That is, when the roller rolls, the mounting shaft rotates, thereby causing the sliding protrusion to slide in the limit groove 1 and the limit groove 2. The limit groove 1 and the limit groove 2 limit the sliding protrusion to prevent the mounting shaft from falling out of the mounting groove.

[0008] In the aforementioned roller mounting structure for a high-pressure cleaner, the plurality of sliding protrusions are spaced circumferentially around the outer surface of the mounting shaft. The provision of multiple sliding protrusions improves the stability of the axial position of the mounting shaft, and even if one of the sliding protrusions breaks, the normal operation of the mounting shaft is not affected.

[0009] In the above-mentioned roller mounting structure for a high-pressure cleaner, the mounting groove has a bottom surface, and the first limiting groove is arranged close to the bottom surface. This structure enables the assembly structure of the sliding protrusion and the first limiting groove to be located at the inner end position of the mounting groove, thereby improving the stability of the limiting structure.

[0010] In the above roller mounting structure of a high-pressure cleaning machine, the pressing plate is fixed to the housing by screws, which facilitates assembly of the pressing plate and the housing and improves assembly efficiency.

[0011] Compared with the prior art, the roller mounting structure of the high-pressure cleaning machine of the utility model has the following advantages: the mounting groove on the casing of this structure can be formed by setting a protrusion on the inner wall of the mold forming cavity, eliminating the structure of the core-pulling slider on the casing mold, significantly reducing the complexity of the mold structure, and also reducing the manufacturing cost of the mold, and also reducing the time for injection molding of the casing. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural diagram of the utility model.

[0013] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model with the pressing plate removed.

[0014] Figure 3 It is a schematic diagram of the explosion structure of the utility model.

[0015] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure of part A in the middle.

[0016] Figure 5 It is a schematic diagram of the cross-sectional structure of the present utility model.

[0017] Figure 6 It is a three-dimensional structural schematic diagram of the pressing plate of the utility model.

[0018] In the figure, 1. housing; 2. roller; 20. mounting shaft; 21. sliding protrusion; 3. mounting slot; 30. rear mounting port; 31. side mounting port; 32. rotating wall 1; 33. limiting slot 1; 34. bottom surface; 4. pressure plate; 40. rotating wall 2; 41. limiting slot 2; 5. screw. DETAILED DESCRIPTION

[0019] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0020] like Figures 1 to 6 As shown, the roller mounting structure of the high-pressure cleaner includes a housing 1 and a roller 2 disposed at the bottom of the housing 1. A mounting groove 3 is provided on the back of the bottom of the housing 1. The mounting groove 3 has a rear mounting opening 30 and a side mounting opening 31. The roller 2 has a mounting shaft 20, which is inserted into the mounting groove 3 through the rear mounting opening 30. A pressure plate 4 is provided on the housing 1 at a position corresponding to the mounting groove 3 to cover the mounting shaft 20. The pressure plate 4 is fixed to the housing 1 by screws 5. An axial limiting structure is provided between the mounting shaft 20, the mounting groove 3, and the pressure plate 4. In this structure, the mounting groove 3 is provided on the back of the bottom of the housing 1, the mounting shaft 20 is then installed into the mounting groove 3, and finally the pressure plate 4 is fixed to the housing 1 to completely cover the mounting shaft 20. The axial limiting structure allows the mounting shaft 20 to rotate but not to fall out of the mounting groove 3. During molding, the mounting groove 3 on the casing 1 can be formed by setting a protrusion on the inner wall of the mold molding cavity, eliminating the structure of the core-pulling slider on the casing mold, significantly reducing the complexity of the mold structure, and also reducing the manufacturing cost of the mold and the time for injection molding of the casing.

[0021] Specifically, the axial limiting structure comprises an arc-shaped rotating wall 1 32 within the mounting groove 3, which has an arc-shaped limiting groove 1 33 extending along its arc. The mounting groove 3 has a bottom surface 34, with limiting groove 1 33 disposed near the bottom surface 34. The pressure plate 4 has an arc-shaped rotating wall 2 40 on its inner side, which has an arc-shaped limiting groove 2 41 extending along its arc. The outer circumference of the mounting shaft 20 is in contact with the rotating walls 1 32 and 2 40. The outer circumference of the mounting shaft 20 includes sliding protrusions 21 that slide within the limiting grooves 1 33 and 2 41. In this embodiment, there are multiple sliding protrusions 21, all of which are spaced apart circumferentially along the outer circumference of the mounting shaft 20. When installing the mounting shaft 20, the mounting shaft 20 is installed into the mounting groove 3 from the rear mounting opening 30, so that the sliding protrusion 21 is inserted into the limiting groove 1 33. At this time, the mounting shaft 20 passes through the side mounting opening 31 and is located in the mounting groove 3, and the outer circumferential surface of the mounting shaft 20 is in contact with the rotating wall 1 32, and part of the mounting shaft 20 is located outside the mounting groove 3. Then the pressure plate 4 is fixed on the casing 1, so that the rotating wall 2 32 is in contact with the outer circumferential surface of the mounting shaft 20, and the limiting groove 2 41 is connected with the limiting groove 1 33, and the sliding protrusion 21 can slide in the limiting groove 1 33 and the limiting groove 2 41, that is, when the roller 2 rolls, the mounting shaft 20 rotates, thereby causing the sliding protrusion 21 to slide in the limiting groove 1 33 and the limiting groove 2 41, and the limiting groove 1 33 and the limiting groove 2 41 play a limiting role on the sliding protrusion 21 to prevent the mounting shaft 20 from falling out of the mounting groove 3.

[0022] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A roller mounting structure for a high-pressure cleaning machine, comprising a housing (1) and a roller (2) arranged at the bottom of the housing (1), characterized in that: A mounting groove (3) is provided on the back of the bottom of the housing (1), and the mounting groove (3) has a rear mounting opening (30) and a side mounting opening (31). The roller (2) has a mounting shaft (20), and the mounting shaft (20) is installed in the mounting groove (3) through the rear mounting opening (30). A pressing plate (4) covering the mounting shaft (20) is provided at a position of the housing (1) corresponding to the mounting groove (3), and an axial limiting structure is provided between the mounting shaft (20), the mounting groove (3) and the pressing plate (4).

2. The roller mounting structure of a high-pressure cleaning machine according to claim 1, characterized in that: The installation groove (3) has an arc-shaped rotating wall (32), and the rotating wall (32) has an arc-shaped limiting groove (33) opened along the arc-shaped square. The inner side of the pressure plate (4) has an arc-shaped rotating wall (40), and the rotating wall (40) has an arc-shaped limiting groove (41) opened along the arc-shaped square. The outer peripheral surface of the installation shaft (20) is in contact with the rotating wall (32) and the rotating wall (40). The outer peripheral surface of the installation shaft (20) has a sliding protrusion (21) slidably arranged in the limiting groove (33) and the limiting groove (41).

3. The roller mounting structure of a high-pressure cleaning machine according to claim 2, characterized in that: There are a plurality of sliding protrusions (21), and all the sliding protrusions (21) are arranged at intervals along the circumferential direction of the outer peripheral surface of the mounting shaft (20).

4. A roller mounting structure for a high-pressure cleaning machine according to claim 2 or 3, characterized in that: The installation groove (3) has a bottom surface (34), and the first limiting groove (33) is arranged close to the bottom surface (34).

5. The roller mounting structure of a high-pressure cleaning machine according to claim 1, characterized in that: The pressing plate (4) is fixed to the casing (1) via screws (5).

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