Brush roll of car washer

Abstract

The utility model relates to a brush roll of a car washing machine, which effectively solves the problem that the brush roll of the car washing machine is inconvenient to install and a soft cloth strip component is inconvenient to replace. According to the technical scheme, the scrubbing device comprises a roller, two connecting shafts and two mounting shafts, and a plurality of scrubbing units are arranged on the outer wall of the roller; the two ends of the roller are each provided with an axial connecting hole, a first spline is arranged in each connecting hole, each connecting shaft is composed of a circular shaft and a square shaft, a second spline is arranged at the outer end of each circular shaft, the spline ends of the two connecting shafts are inserted into the two connecting holes respectively, and the second splines are matched with the first splines. A limiting nut is screwed on the circular shaft section of the connecting shaft; the two mounting shafts are located on the outer sides of the two connecting shafts respectively, square holes are formed in the ends, close to the connecting shafts, of the mounting shafts, and the square shaft ends of the connecting shafts can be inserted into the square holes; the roller is convenient to mount and dismount, stable in connection and high in bearing capacity, and the brushing unit integrates the convenience of replacement and the stability during working.

Description

Technical Field

[0001] This utility model relates to the field of car wash machines, specifically a car wash machine brush roller. Background Technology

[0002] Car wash machine brush rollers typically employ a structure where the outer wall of the roller is densely covered with soft cloth strips. As the roller rotates, the soft cloth strips scrub the car body. Brush rollers are generally mounted on a gantry frame. Currently, the installation structure on the gantry frame needs to be disassembled for brush roller installation or removal, which is inconvenient for brush roller installation, maintenance, and replacement. In addition, the soft cloth strips are consumable parts that need to be replaced frequently, and the current brush roller structure does not facilitate the replacement of the soft cloth strips.

[0003] The utility model patent with application number CN201821774396.5 discloses a brush roller device for a car wash machine. It uses radial spring blocks installed at the ends of the roller to connect the roller and the connecting frame to achieve roller installation. However, this structure relies solely on the connection and transmission of the spring blocks, resulting in poor stability and load-bearing capacity. It is prone to overload slippage or spring block breakage and deformation. Moreover, for horizontal rollers, both ends need to be supported, and there needs to be space for axial movement during installation, which the aforementioned patent obviously cannot achieve. The aforementioned patent also uses a convex-shaped groove to install soft cloth strips, but due to the large length of the groove, even small processing errors or deformations can cause installation difficulties. Summary of the Invention

[0004] This utility model provides a car wash machine brush roller, which aims to solve the problems of inconvenient installation of car wash machine brush rollers and replacement of soft cloth strip components.

[0005] The technical solution includes a roller, two connecting shafts, and two mounting shafts. Several sets of brushing units are provided on the outer wall of the roller. Each end of the roller has an axial connecting hole with a first spline inside. The connecting shaft consists of a round shaft and a square shaft. The outer end of the round shaft has a second spline. The splined ends of the two connecting shafts are respectively inserted into the two connecting holes, and the second spline mates with the first spline. A limit nut is screwed onto the round shaft section of the connecting shaft. The two mounting shafts are located outside the two connecting shafts, and the end of the mounting shaft near the connecting shaft has a square hole, into which the square shaft end of the connecting shaft can be inserted.

[0006] The mounting shaft has a support groove at one end near the connecting shaft. The support groove is square and open at the top. One end of the support groove is connected to the square hole, and the other end is open.

[0007] The bottom of the support groove is provided with several rollers.

[0008] The brushing unit includes a dovetail strip and bristles fixed to one side wall of the dovetail strip. The outer wall of the roller is evenly distributed with several axial dovetail grooves. The dovetail strip is inserted into the dovetail grooves and the bristles extend out of the roller.

[0009] The cross-sectional area of ​​the dovetail strip is smaller than the cross-sectional area of ​​the dovetail groove. Each end of the dovetail strip has a beveled angle on the side near the bottom of the dovetail groove. The beveled angle and the bottom surface of the dovetail groove form a wedge-shaped cavity that is wider at the outer end and narrower at the inner end. A wedge block is installed in each wedge cavity and the wedge block is fixed to the end face of the roller by a bolt.

[0010] This invention allows for the installation and removal of the rollers without disassembling any car wash machine components, simply by tightening the limit nut. This makes the operation convenient. Furthermore, the connecting shaft connects the rollers and the mounting shaft via splines and square shafts, ensuring a stable connection and strong load-bearing capacity.

[0011] By using a dovetail strip with a cross-sectional area smaller than that of the dovetail groove, the dovetail strip can be easily inserted and removed. The wedge block provides stable radial and axial positioning of the dovetail strip, balancing ease of replacement with stability during operation. Attached Figure Description

[0012] Figure 1 This is a perspective view of the present invention.

[0013] Figure 2 A perspective view of this utility model with the bristles concealed.

[0014] Figure 3 This is the left view of the present invention.

[0015] Figure 4 This is a front sectional view of the present invention when the connecting shaft is not inserted into the square hole.

[0016] Figure 5 This is a front sectional view of the present invention after the connecting shaft is inserted into the square hole.

[0017] Figure 6 for Figure 4 A magnified view of position A in the middle.

[0018] Figure 7 for Figure 4 A magnified view of position B in the middle.

[0019] Figure 8 This is a 3D view of the connecting shaft.

[0020] Figure 9 This is a 3D view of the mounting shaft.

[0021] Figure 10 This is a 3D view of the roller. Detailed Implementation

[0022] Referring to the accompanying drawings, this utility model includes a roller 1, two connecting shafts 2, and two mounting shafts 3. Several sets of brushing units are provided on the outer wall of the roller 1, and the brushing units brush the vehicle as the roller 1 rotates. Each end of the roller 1 has an axial connecting hole 4, and a first spline 5 is provided within the connecting hole 4. The connecting shaft 2 consists of a round shaft section and a square shaft section. The outer end of the round shaft is provided with a second spline 6. The splined ends of the two connecting shafts 2 are respectively inserted into the two connecting holes 4, and the second spline 6 mates with the first spline 5. A limiting nut 7 is screwed onto the round shaft section of the connecting shaft 2, and the inner end of the limiting nut 7 contacts the end face of the roller 1. By adjusting the position of the limiting nut 7, the maximum length of the connecting shaft 2 inserted into the connecting hole 4 can be limited. When the limiting nut 7 moves towards the spline end, the connecting shaft 2 moves outward, and vice versa. The two mounting shafts 3 are located on the outside of the two connecting shafts 2 respectively, and the end of the mounting shaft 3 near the connecting shaft 2 has a square hole 8. When the limiting nut 7 moves towards the spline end, the connecting shaft 2 moves outward, and the square shaft end of the connecting shaft 2 can be inserted into the square hole 8 to connect with the mounting shaft 3. The outer end of the mounting shaft 3 is mounted on the gantry of the car wash machine through the bearing seat. The drive motor drives the drum to rotate through the mounting shaft 3 to perform the washing operation.

[0023] The mounting shaft 3 has a support groove 9 at one end near the connecting shaft 2. The support groove 9 is square and open at the top. One end of the support groove 9 is connected to the square hole 8, and the other end is open. When installing the roller 1, the connecting shaft 2 is inserted into the connecting holes 4 at both ends of the roller 1. The roller 1 is hoisted so that the square shaft section of the connecting shaft 2 is placed in the support groove 9. Then, the limiting nut 7 is screwed on so that the connecting shaft 2 moves outward and is inserted into the square hole 8, thereby achieving the connection with the mounting shaft 3.

[0024] The bottom of the support groove 9 is provided with several rollers 10, which can reduce the resistance to the axial movement of the connecting shaft 2.

[0025] The brushing unit includes a dovetail strip 11 and bristles 12 fixed on one side wall of the dovetail strip 11. The outer wall of the roller 1 is evenly distributed with several axial dovetail grooves 13. The dovetail strip 11 is inserted into the dovetail grooves 13, and the bristles 12 extend out of the roller 1. The bristles 12 are usually soft cloth strips.

[0026] The cross-sectional area of ​​the dovetail strip 11 is smaller than that of the dovetail groove 13, allowing the dovetail strip 11 to be easily inserted into or removed from the dovetail groove 13. Each end of the dovetail strip 11 has a beveled angle 14 near the bottom of the dovetail groove 13. The beveled angle 14 and the bottom surface of the dovetail groove 13 form a wedge-shaped cavity that is wider at the outer end and narrower at the inner end. A wedge block 15 is installed in each wedge cavity. The wedge block 15 is fixed to the end face of the roller 1 by a bolt 16. The bolt 16 pushes the wedge block 15 inward along the axial direction of the roller 1, and the wedge block 15 pushes the dovetail strip 11 outward along the radial direction of the roller 1, so that the side wall of the dovetail strip 11 is pressed tightly against the side wall of the dovetail groove 13, thereby achieving stable installation of the dovetail strip 11 in the dovetail groove 13.

[0027] The two mounting shafts 3 of this invention are installed in the bearing seats of the gantry or frame without slots at one end, and are connected to the drive motor through a transmission mechanism such as gears or pulleys. When installing the roller 1, the two mounting shafts 3 are rotated to the position where the groove opening of the support groove 9 faces upward, and the mounting shafts 3 are braked. Then, the spline end of the connecting shaft 2 is inserted into the connecting hole 4 of the roller 1, so that the first spline 5 and the second spline 6 are engaged. Then, the roller 1 is hoisted so that the square shaft sections of the two connecting shafts 2 are placed in the support groove 9. Then, the limiting nut 7 is rotated inward to move the connecting shaft 2 outward. The square shaft section of the connecting shaft 2 is inserted into the square hole 8 of the mounting shaft 3, ensuring that the ends of the two connecting shafts 2 are tightly abutted against the bottom of the square hole 8. At this time, the axial position of the two connecting shafts 2 and the roller 1 is completely locked, and the installation of the roller 1 is completed.

[0028] When the brushing unit needs to be replaced, first remove the wedge block 15 at the end of the dovetail groove 13, then pull out the old dovetail strip 11, insert the new dovetail strip 11, and then install the wedge block 15.

[0029] This invention enables the installation and disassembly of the roller 1 without disassembling the car wash machine components, simply by tightening the limiting nut 7. It is easy to operate, has a stable connection, and strong load-bearing capacity.

[0030] The wedge block 15 provides stable radial and axial positioning of the dovetail strip 11, balancing ease of replacement with stability during operation.

Claims

1. A car wash machine brush roller, characterized in that, The roller (1), two connecting shafts (2) and two mounting shafts (3) are included. Several sets of brushing units are provided on the outer wall of the roller (1). Each end of the roller (1) has an axial connecting hole (4). The connecting hole (4) is provided with a first spline (5). The connecting shaft (2) is composed of a round shaft and a square shaft. The outer end of the round shaft is provided with a second spline (6). The spline ends of the two connecting shafts (2) are respectively inserted into the two connecting holes (4), and the second spline (6) is engaged with the first spline (5). A limiting nut (7) is screwed on the round shaft section of the connecting shaft (2). The two mounting shafts (3) are located outside the two connecting shafts (2), and the end of the mounting shaft (3) close to the connecting shaft (2) has a square hole (8). The square shaft end of the connecting shaft (2) can be inserted into the square hole (8).

2. The car wash machine brush roller according to claim 1, characterized in that, The mounting shaft (3) is provided with a support groove (9) at one end near the connecting shaft (2). The support groove (9) is square and open at the top. One end of the support groove (9) is connected to the square hole (8), and the other end is open.

3. A car wash machine brush roller according to claim 2, characterized in that, The bottom of the support groove (9) is provided with several rollers (10).

4. A car wash machine brush roller according to claim 1, characterized in that, The brushing unit includes a dovetail strip (11) and bristles (12) fixed on one side wall of the dovetail strip (11). The outer wall of the roller (1) is evenly distributed with several axial dovetail grooves (13). The dovetail strip (11) is inserted into the dovetail groove (13), and the bristles (12) extend out of the roller (1).

5. A car wash machine brush roller according to claim 4, characterized in that, The cross-sectional area of ​​the dovetail strip (11) is smaller than that of the dovetail groove (13). Each end of the dovetail strip (11) is provided with a chamfer (14) on the side near the bottom of the dovetail groove (13). The chamfer (14) and the bottom surface of the dovetail groove (13) form a wedge-shaped cavity with a wider outer end and a narrower inner end. A wedge block (15) is installed in each wedge cavity. The wedge block (15) is fixed to the end face of the roller (1) by a bolt (16).

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