Eccentric tensioning wheel set and engine

Abstract

The utility model discloses an eccentric tensioning wheel set which comprises an eccentric tensioning wheel and a tensioning wheel installation frame, the eccentric tensioning wheel is installed on the tensioning wheel installation frame, and one of the eccentric tensioning wheel and the tensioning wheel installation frame is provided with a tensioning wheel adjusting mark. The other one is provided with a tension adjusting space formed by a start adjusting mark, an end adjusting mark and a gap between the start adjusting mark and the end adjusting mark, and the tension wheel adjusting mark points to the tension adjusting space; when the tensioning wheel adjustment mark points to the initial adjustment mark, the eccentric tensioning wheel is located at the initial tensioning adjustment position; and when the tensioning wheel adjustment mark points to the adjustment ending mark, the eccentric tensioning wheel is located at the tensioning adjustment transition position. According to the eccentric tensioning wheel set, an operator is reminded to adjust the tensioning wheel only in the tensioning adjusting space through the tensioning adjusting space. The situation that the tensioning wheel returns to the state before tensioning due to too large tensioning force or excessive tensioning, and consequently the belt is loosened is avoided, the adjusting space of the eccentric tensioning wheel is reduced, and then the adjusting efficiency of the eccentric tensioning wheel is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tension wheel adjustment, in particular to an eccentric tension wheel assembly and an engine. Background Art

[0002] The tensioner mounting bracket of the eccentric tensioner assembly serves as the mounting base for the eccentric tensioner and secures it. To tension the belt, insert the threaded fastener through the tensioner mounting hole of the eccentric tensioner and then screw it into the threaded hole on the tensioner mounting bracket. The eccentric tensioner is rotated and adjusted along the centerline of the tensioner mounting hole to tension the belt mounted on it. When the belt is tensioned to the desired position, tighten the threaded fastener to secure the eccentric tensioner to the tensioner mounting bracket, completing belt tensioning and eccentric tensioner installation.

[0003] However, during the belt tensioning process, when the eccentric tensioner is over-tensioned, the eccentric tensioner will return to the state before tensioning, causing the belt to become loose, which in turn requires further adjustment. The adjustment efficiency of the eccentric tensioner is low.

[0004] Therefore, how to improve the adjustment efficiency of the eccentric tensioner is a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0005] The purpose of the utility model is to provide an eccentric tensioning wheel assembly and an engine, so as to improve the adjustment efficiency of the eccentric tensioning wheel.

[0006] Eccentric tensioner pulley assembly, including:

[0007] Eccentric tensioner;

[0008] The tensioning wheel mounting frame, the eccentric tensioning wheel is mounted on the tensioning wheel mounting frame, the eccentric tensioning wheel and the tensioning wheel mounting frame are provided with a tensioning wheel adjustment mark, and the other is provided with a tensioning adjustment space formed by a starting adjustment mark, an ending adjustment mark and the interval therebetween, the tensioning wheel adjustment mark points to the tensioning adjustment space; when the tensioning wheel adjustment mark points to the starting adjustment mark, the eccentric tensioning wheel is located at the tensioning adjustment initial position; when the tensioning wheel adjustment mark points to the ending adjustment mark, the eccentric tensioning wheel is located at the tensioning adjustment excessive position.

[0009] Optionally, in the above-mentioned eccentric tensioner assembly, the starting adjustment mark and the ending adjustment mark are both set on the tensioner mounting frame, and also include a tensioner rotation adjustment mark indicating the adjustment direction of the eccentric tensioner. The tensioner rotation adjustment mark is set on the tensioner mounting frame, and the starting adjustment mark points to the ending adjustment mark.

[0010] Optionally, in the above-mentioned eccentric tensioning wheel assembly, a tensioning wheel rotation adjustment mark with an arrow is formed inwardly on the tensioning wheel mounting frame, and the arrow of the tensioning wheel rotation adjustment mark points to the end adjustment mark.

[0011] Optionally, in the above-mentioned eccentric tensioner assembly, the tensioner adjustment mark is a pointer set on the eccentric tensioner, and the start adjustment mark and the end adjustment mark are both marking lines set on the tensioner mounting frame.

[0012] Optionally, in the above-mentioned eccentric tensioning wheel assembly, the pointer is arranged on the wheel surface of the eccentric tensioning wheel, and the wheel surface of the eccentric tensioning wheel is perpendicular to the axis of the eccentric tensioning wheel.

[0013] Optionally, in the above-mentioned eccentric tensioning wheel assembly, the tensioning wheel adjustment mark is a limiting protrusion, and the limiting protrusion is arranged on the outer peripheral surface of the eccentric tensioning wheel or the outer peripheral surface of the tensioning wheel mounting frame.

[0014] Optionally, the above-mentioned eccentric tensioner assembly further includes a limiting groove adapted to the limiting protrusion, wherein the end of the limiting protrusion away from the eccentric tensioner is located in the limiting groove and can abut against the two opposite side walls of the limiting groove, and the bottom of the limiting groove is provided with a tensioner rotation adjustment mark indicating the adjustment direction of the eccentric tensioner; one of the two opposite side walls of the limiting groove is a starting adjustment mark, and the other is an ending adjustment mark.

[0015] Optionally, in the above-mentioned eccentric tensioning wheel assembly, the limiting protrusion and the eccentric tensioning wheel are integrally formed, and the limiting groove is provided on the eccentric tensioning wheel.

[0016] Optionally, in the above-mentioned eccentric tensioner assembly, the eccentric tensioner is detachably mounted on the tensioner mounting frame via a threaded fastener, and the tensioner mounting frame is provided with a mounting hole for the threaded fastener to pass through.

[0017] An engine comprises the eccentric tensioner assembly as described in any one of the above items.

[0018] In the above technical solution, the eccentric tensioner assembly provided by the utility model includes an eccentric tensioner and a tensioner mounting frame, the eccentric tensioner being mounted on the tensioner mounting frame, one of the eccentric tensioner and the tensioner mounting frame being provided with a tensioner adjustment mark, and the other being provided with a tensioning adjustment space formed by a starting adjustment mark, an ending adjustment mark, and the interval therebetween, the tensioner adjustment mark pointing to the tensioning adjustment space; when the tensioner adjustment mark points to the starting adjustment mark, the eccentric tensioner is located at the initial tensioning adjustment position; when the tensioner adjustment mark points to the ending adjustment mark, the eccentric tensioner is located at the tensioning adjustment intermediate position. When the eccentric tensioner assembly is installed, in the initial position, the tensioner adjustment mark is aligned with the starting adjustment mark, at which point the belt is in a relatively loose state. As the tensioner is rotated, the tensioner adjustment mark is positioned within the tensioning adjustment space to which it points, and the belt is gradually tensioned. When the tensioner adjustment mark points to the ending adjustment mark, the belt is at the tensioning limit position.

[0019] As can be seen from the above description, in the eccentric tensioner assembly provided by the present application, the tensioning adjustment space is used to remind the operator to adjust the tensioner only within the tensioning adjustment space. This prevents excessive tensioning force or over-tensioning from causing the tensioner to return to its pre-tensioning state, causing belt slack, and reducing the eccentric tensioner adjustment space, thereby improving the adjustment efficiency of the eccentric tensioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0021] Figure 1 A cross-sectional view of an eccentric tensioning wheel assembly provided by an embodiment of the present utility model;

[0022] Figure 2 for Figure 1 A top view of the eccentric tensioner assembly shown;

[0023] Figure 3 for Figure 1 A top view of the tensioning wheel mounting frame in the eccentric tensioning wheel assembly shown;

[0024] Figure 4 for Figure 3 A cross-sectional view of the tensioner mounting frame shown;

[0025] Figure 5 for Figure 1 A top view of the eccentric tensioner in the eccentric tensioner assembly shown;

[0026] Figure 6 for Figure 5 A bottom view of the eccentric tensioner shown;

[0027] Figure 7 for Figure 5 A cross-sectional view of the eccentric tensioner shown;

[0028] Figure 8 A schematic structural diagram of another eccentric tensioning wheel assembly provided by an embodiment of the present utility model;

[0029] Figure 9 for Figure 8 A top view of the tensioning wheel mounting frame in the eccentric tensioning wheel assembly shown;

[0030] Figure 10 for Figure 8 A cross-sectional view of the eccentric tensioner in the eccentric tensioner assembly is shown.

[0031] in Figure 1-10 Middle: 1-tensioner mounting bracket, 2-eccentric tensioner, 201-tensioner mounting surface, 3-tensioner adjustment mark, 4-start adjustment mark, 5-end adjustment mark, 6-tensioner rotation adjustment mark, 7-limiting protrusion, 8-limiting groove. DETAILED DESCRIPTION

[0032] The core of the utility model is to provide an eccentric tensioning wheel assembly and an engine to improve the adjustment efficiency of the eccentric tensioning wheel.

[0033] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and implementation methods.

[0034] Please refer to Figures 1 to 10 .

[0035] In a specific embodiment, the eccentric tensioning wheel assembly provided by the specific embodiment of the present invention includes an eccentric tensioning wheel 2 and a tensioning wheel mounting frame 1, and the tensioning wheel mounting surface 201 of the eccentric tensioning wheel 2 is mounted on the tensioning wheel mounting frame 1. In order to facilitate disassembly and assembly, the eccentric tensioning wheel 2 is detachably mounted on the tensioning wheel mounting frame 1 by a threaded fastener. The eccentric tensioning wheel 2 is provided with a mounting hole for the threaded fastener to pass through. The threaded fastener can be specifically a bolt. The screw portion of the threaded fastener is threadedly connected to the tensioning wheel mounting frame 1. The head of the threaded fastener can abut against the eccentric tensioning wheel 2 to achieve relative fixation of the eccentric tensioning wheel and the tensioning wheel mounting frame 1.

[0036] One of the eccentric tensioner 2 and the tensioner mounting frame 1 is provided with a tensioner adjustment mark 3, and the other is provided with a start adjustment mark 4 and an end adjustment mark 5. The interval between the start adjustment mark 4 and the end adjustment mark 5 forms a tensioning adjustment space, and the tensioning adjustment space marks the rotation range of the tensioner during tensioning. Specifically, the tensioner adjustment mark 3 points to the tensioning adjustment space.

[0037] In a specific embodiment, the start adjustment mark 4 and the end adjustment mark 5 are set on the eccentric tensioner 2, and the tensioner adjustment mark 3 is set on the tensioner mounting frame 1. Considering the limited installation space of the eccentric tensioner 2, preferably, the tensioner adjustment mark 3 is set on the eccentric tensioner 2, and the tensioning adjustment space formed by the start adjustment mark 4 and the end adjustment mark 5 and the space therebetween is set on the tensioner mounting frame 1.

[0038] When the tensioning wheel adjustment mark 3 points to the starting adjustment mark 4, the eccentric tensioning wheel 2 is located at the tensioning adjustment initial position; when the tensioning wheel adjustment mark 3 points to the ending adjustment mark 5, the eccentric tensioning wheel 2 is located at the tensioning adjustment excessive position.

[0039] When installing the eccentric tensioner assembly, in the initial position, align the tensioner adjustment mark 3 with the starting adjustment mark 4. At this time, the belt is in a relatively loose state. As the tensioner is rotated, the tensioner adjustment mark 3 is located in the tensioning adjustment space it points to, and the belt is gradually tightened. When the tensioner adjustment mark 3 points to the end adjustment mark 5, it indicates that the belt is at the tensioning limit position.

[0040] As can be seen from the above description, in the eccentric tensioner assembly provided in the specific embodiment of this application, the tensioning adjustment space is used to remind the operator that the tensioner can only be adjusted within the tensioning adjustment space. This prevents excessive tensioning or over-tensioning from causing the tensioner to return to its pre-tensioning state, causing belt slack and reducing the adjustment space of the eccentric tensioner 2. Therefore, the eccentric tensioner assembly provided in this application can reduce repeated trial assembly and adjustment, facilitate assembly and market maintenance, save manpower and time, and thus improve the adjustment efficiency of the eccentric tensioner 2.

[0041] In a specific embodiment, the starting adjustment mark 4 and the ending adjustment mark 5 are both provided on the tensioning wheel mounting frame 1, and the eccentric tensioning wheel assembly further includes a tensioning wheel rotation adjustment mark 6 indicating the adjustment direction of the eccentric tensioning wheel 2. The tensioning wheel rotation adjustment mark 6 is provided on the tensioning wheel mounting frame 1, and is pointed to by the starting adjustment mark 4 and the ending adjustment mark 5. The starting adjustment mark 4 is the position where the eccentric tensioning wheel 2 starts to be tensioned, that is, the tensioning wheel adjustment mark 3 should be placed near the starting adjustment mark 4 after the eccentric tensioning wheel 2 is installed. The rotation direction indicated by the tensioning wheel rotation adjustment mark 6 is the tensioning direction of the eccentric tensioning wheel 2. The ending adjustment mark 5 is used to remind the operator not to exceed this line when tensioning, so as to prevent the tensioning wheel from returning to the state before tensioning due to excessive tensioning force or excessive tensioning, causing the belt to slack.

[0042] like Figure 2 、 Figure 3 、 Figure 8 and Figure 9 As shown, a tensioning wheel rotation adjustment mark 6 with an arrow is formed inwardly on the tensioning wheel mounting frame 1. The arrow on the tensioning wheel rotation adjustment mark 6 points to the end adjustment mark 5. Specifically, the tensioning wheel rotation adjustment mark 6 can be engraved on the eccentric tensioning wheel 2 or the tensioning wheel mounting frame 1. To facilitate identification, the tensioning wheel rotation adjustment mark 6 can be displayed using a colored line. The tensioning wheel rotation adjustment mark 6 indicates the rotation direction of the tensioning wheel during tensioning, reducing the possibility of accidental rotation.

[0043] Specifically, the start adjustment mark 4 , the end adjustment mark 5 and the tensioning wheel adjustment mark 3 are represented by carved lines.

[0044] During use, adjust the tensioner adjustment mark 3 to near the starting adjustment mark 4. Adjust the tensioner to tension the belt in the direction of rotation on the tensioner mounting bracket 1. When the required tension is reached, tighten the tensioner bolt to complete the tensioning. During the tensioning process, be careful not to exceed the ending adjustment mark 5 to prevent excessive tension or over-tensioning, which may cause the eccentric tensioner 2 to return to its pre-tension state and cause the belt to slack.

[0045] like Figure 8 As shown, the tensioner adjustment mark 3 is a pointer provided on the eccentric tensioner 2. The start adjustment mark 4 and the end adjustment mark 5 are provided as marking lines on the tensioner mounting frame 1. Specifically, the pointer can be represented by features such as a line or a point.

[0046] like Figure 8 As shown, the pointer is set on the wheel surface of the eccentric tensioning wheel 2, and the wheel surface of the eccentric tensioning wheel 2 is perpendicular to the axis of the eccentric tensioning wheel 2. Specifically, when the marking line and the pointer are facing each other, their extension lines are coincident.

[0047] like Figure 1 、 Figure 2、 Figure 5 and Figure 6 As shown, in a specific embodiment, the tensioning wheel adjustment mark 3 is a limiting protrusion 7, which is provided on the outer circumference of the eccentric tensioning wheel 2 or the outer circumference of the tensioning wheel mounting frame 1. Specifically, the limiting protrusion 7 is provided on the outer circumference of the eccentric tensioning wheel 2, and its length direction extends perpendicular to the axis of the eccentric tensioning wheel 2.

[0048] In a specific embodiment, the eccentric tensioning wheel assembly provided in the present application further includes a limiting groove 8 adapted to the limiting protrusion 7. The limiting protrusion 7 is located in the limiting groove 8 at one end away from the eccentric tensioning wheel 2 and is capable of abutting against two opposite side walls of the limiting groove 8. Specifically, the side walls of the limiting groove 8 limit the rotation range of the protrusion 7, thereby further preventing the eccentric tensioning wheel 2 from returning to its pre-tensioning state due to excessive tensioning force or over-tensioning.

[0049] Specifically, the limiting groove 8 can be arranged in an arc shape.

[0050] One of the two opposite side walls of the limiting groove 8 is a start adjustment mark 4, and the other is an end adjustment mark 5. Specifically, the side of the limiting groove 8 close to the eccentric tensioning wheel 2 can be opened.

[0051] Preferably, the bottom of the limiting groove 8 is provided with a tensioning wheel rotation adjustment mark 6 indicating the adjustment direction of the eccentric tensioning wheel 2, so as to further avoid the eccentric tensioning wheel 2 from rotating incorrectly.

[0052] In order to improve the assembly efficiency and the accuracy of the installation position, it is preferred that the limiting protrusion 7 and the eccentric tensioning wheel 2 are integrally formed. In this case, the limiting groove 8 is provided on the eccentric tensioning wheel 2. Figure 1 As shown, specifically, the limiting protrusion 7 is arranged in an L-shape, and one end away from the eccentric tensioning wheel 2 extends into the limiting groove 8.

[0053] An engine includes any of the above-mentioned eccentric tensioner pulleys, which cooperate with a belt. The above description describes the specific structure of the eccentric tensioner pulley. This application includes the above-mentioned eccentric tensioner pulley and also has the above-mentioned technical effects.

[0054] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0055] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An eccentric tensioning wheel assembly, characterized in that: include: Eccentric tensioner (2); A tensioning wheel mounting frame (1), the eccentric tensioning wheel (2) is mounted on the tensioning wheel mounting frame (1), one of the eccentric tensioning wheel (2) and the tensioning wheel mounting frame (1) is provided with a tensioning wheel adjustment mark (3), and the other is provided with a tensioning adjustment space formed by a starting adjustment mark (4) and an ending adjustment mark (5) and the interval therebetween, the tensioning wheel adjustment mark (3) points to the tensioning adjustment space; when the tensioning wheel adjustment mark (3) points to the starting adjustment mark (4), the eccentric tensioning wheel (2) is located at the tensioning adjustment initial position; when the tensioning wheel adjustment mark (3) points to the ending adjustment mark (5), the eccentric tensioning wheel (2) is located at the tensioning adjustment excessive position.

2. The eccentric tensioner assembly according to claim 1, characterized in that: The starting adjustment mark (4) and the ending adjustment mark (5) are both arranged on the tensioning wheel mounting frame (1), and further include a tensioning wheel rotation adjustment mark (6) indicating the adjustment direction of the eccentric tensioning wheel (2); the tensioning wheel rotation adjustment mark (6) is arranged on the tensioning wheel mounting frame (1), and is pointed from the starting adjustment mark (4) to the ending adjustment mark (5).

3. The eccentric tensioner assembly according to claim 2, characterized in that: A tension wheel rotation adjustment mark (6) with an arrow is formed inwardly on the tension wheel mounting frame (1), and the arrow of the tension wheel rotation adjustment mark (6) points to the end adjustment mark (5).

4. The eccentric tensioner assembly according to claim 1, characterized in that: The tension wheel adjustment mark (3) is a pointer provided on the eccentric tension wheel (2), and the start adjustment mark (4) and the end adjustment mark (5) are both marking lines provided on the tension wheel mounting frame (1).

5. The eccentric tensioner assembly according to claim 4, characterized in that: The pointer is arranged on the wheel surface of the eccentric tensioning wheel (2), and the wheel surface of the eccentric tensioning wheel (2) is perpendicular to the axis of the eccentric tensioning wheel (2).

6. The eccentric tensioner assembly according to claim 1, characterized in that: The tensioning wheel adjustment mark (3) is a limiting protrusion (7), and the limiting protrusion (7) is arranged on the outer peripheral surface of the eccentric tensioning wheel (2) or the outer peripheral surface of the tensioning wheel mounting frame (1).

7. The eccentric tensioning wheel assembly according to claim 6, characterized in that: It also includes a limiting groove (8) adapted to the limiting protrusion (7), wherein one end of the limiting protrusion (7) away from the eccentric tensioning wheel (2) is located in the limiting groove (8) and can abut against two opposite side walls of the limiting groove (8), and the bottom of the limiting groove (8) is provided with a tensioning wheel rotation adjustment mark (6) indicating the adjustment direction of the eccentric tensioning wheel (2); one of the two opposite side walls of the limiting groove (8) is a starting adjustment mark (4), and the other is an ending adjustment mark (5).

8. The eccentric tensioning wheel assembly according to claim 7, characterized in that: The limiting protrusion (7) and the eccentric tensioning wheel (2) are integrally formed, and the limiting groove (8) is provided on the eccentric tensioning wheel (2).

9. The eccentric tensioning wheel assembly according to any one of claims 1 to 8, characterized in that: The eccentric tensioning wheel (2) is detachably mounted on the tensioning wheel mounting frame (1) via a threaded fastener, and the eccentric tensioning wheel (2) is provided with a mounting hole for the threaded fastener to pass through.

10. An engine, characterized in that: The utility model comprises the eccentric tensioning wheel assembly according to any one of claims 1 to 9.

Images