Tool suitable for installing elastic belt of inner section groove of multi-section type damping belt pulley

Abstract

The utility model discloses a tool suitable for installing an elastic belt in an inner section groove of a multi-section type damping belt pulley. The tool comprises a crankshaft belt pulley, a water pump belt pulley, an idle pulley A, a generator belt pulley, an idle pulley B, the elastic belt and a belt installation tool. The belt installation tool is arranged on the smooth wheel face of the water pump belt wheel, and meanwhile the inner side of the elastic belt is installed in outer section grooves of the crankshaft belt wheel, the generator belt wheel and the idle wheel A respectively. According to the belt mounting tool, the requirement for mounting the elastic belt of the inner-section wheel groove of the multi-section crankshaft belt pulley is met, the belt is lengthened step by step in the rotating process of the belt mounting tool by fixing the belt mounting tool on the smooth wheel face of the water pump belt pulley, and the back side of the belt is gradually pushed to the mounting position along the smooth wheel face of the water pump belt pulley through the spiral belt flange; the problem that the belt is broken due to the fact that the belt is stretched to be too long in the elastic belt installation process through a belt installation tool of a traditional structure is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of belt installation, and specifically relates to a tool suitable for installing elastic belts in inner grooves of multi-section shock-absorbing pulleys. Background Art

[0002] In the prior art, engine accessory belts typically utilize poly-V belts. These belts utilize a steel or polyester cord with high tensile and fatigue strength as a tension layer, coated with rubber or polyurethane. These belts offer advantages such as low specific gravity, high strength, excellent oil and wear resistance, a high coefficient of friction, and excellent transmission performance. In recent years, to reduce engine costs, many poly-V belts for engine accessories have adopted self-tensioning elastic belts. These elastic belts are typically used in gear trains driven by a single-stage crankshaft pulley.

[0003] During the implementation of the embodiments of the present disclosure, it was found that at least the following problems exist in the related art:

[0004] Accessory belts are currently categorized as either standard or elastic belts. Standard belts are tensioned using either manual or automatic tensioners, while elastic belts require no additional tensioner during use. Instead, the belt stretches when installed, utilizing its own elastic force to achieve tension. However, current elastic belt installation tools are only suitable for installing elastic belts in single-segment damping pulleys or the outermost grooves of multi-segment pulleys. They are not suitable for installing elastic belts in the inner grooves of multi-segment pulleys. Utility Model Content

[0005] The purpose of the utility model is to provide a tool suitable for installing an elastic belt in the inner groove of a multi-section shock-absorbing pulley, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tool suitable for installing an elastic belt in the inner groove of a multi-section shock-absorbing pulley, comprising a crankshaft pulley, a water pump pulley, an idler pulley A, a generator pulley, an idler pulley B, an elastic belt and a belt installation tool; the belt installation tool is arranged on the smooth pulley surface of the water pump pulley, and at the same time, the inner sides of the elastic belt are respectively installed in the outer grooves of the crankshaft pulley, the generator pulley and the idler pulley A; the inner grooves of the idler pulley B and the water pump pulley are pressed against the outer side of the elastic belt, the idler pulley B is arranged between the crankshaft pulley and the generator pulley, and presses against the elastic belt between the crankshaft pulley and the generator pulley, and the water pump pulley is arranged between the crankshaft pulley and the idler pulley A, and presses against the elastic belt between the crankshaft pulley and the idler pulley A.

[0007] Preferably, the elastic belt is in a tensioned state.

[0008] Preferably, the belt installation tool comprises an ear-shaped main body, a belt rib, a belt installation surface, a driving square hole and a fixing hole;

[0009] The belt rib is arranged on the inclined surface of the ear-shaped main body, the belt mounting surface is arranged on the outer side of the belt rib, the driving square hole and the fixing hole are both arranged on the inner side of the ear-shaped main body, and the driving square hole and the fixing hole are adjacent to each other.

[0010] Preferably, the belt rib is a spiral propulsion structure.

[0011] Preferably, the inclined surface of the belt installation surface coincides with the inclined surface of the ear-shaped main body, and the long side of the belt installation surface is in the opposite direction to the long side of the ear-shaped main body.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention meets the installation requirements of the elastic belt in the inner groove of a multi-section crankshaft pulley. By fixing it on the smooth wheel surface of the water pump pulley, the belt is gradually stretched during the rotation of the belt installation tool, and the back side of the belt is gradually pushed to the installation position along the smooth wheel surface of the water pump pulley with a spiral belt rib, thereby avoiding the problem of the traditional structure of the belt installation tool causing the belt to break due to excessive stretching during the installation of the elastic belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure installation of the utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the belt installation tool;

[0015] Figure 3 This is a schematic diagram of the external structure of the belt installation tool.

[0016] In the figure: 1. Crankshaft pulley; 2. Water pump pulley; 3. Idle pulley A; 4. Generator pulley; 5. Idle pulley B; 6. Elastic belt; 7. Belt installation tool; 7-1. Ear-shaped body; 7-2. Belt rib; 7-3. Belt mounting surface; 7-4. Drive square hole; 7-5. Fixing hole. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See also Figure 1-2 The utility model provides a technical solution: a tool suitable for installing an elastic belt in the inner groove of a multi-section shock-absorbing pulley, comprising a crankshaft pulley 1, a water pump pulley 2, an idler pulley A3, a generator pulley 4, an idler pulley B5, an elastic belt 6 and a belt installation tool 7; the belt installation tool 7 is arranged on the smooth pulley surface of the water pump pulley 2, and the inner side of the elastic belt 6 is respectively installed in the outer grooves of the crankshaft pulley 1, the generator pulley 4 and the idler pulley A3; the inner grooves of the idler pulley B5 and the water pump pulley 2 are pressed against the outer side of the elastic belt 6, the idler pulley B5 is arranged between the crankshaft pulley 1 and the generator pulley 4, and presses against the elastic belt 6 between the crankshaft pulley 1 and the generator pulley 4, the water pump pulley 2 is arranged between the crankshaft pulley 1 and the idler pulley A3, and presses against the elastic belt 6 between the crankshaft pulley 1 and the idler pulley A3. In order to reduce the cost of the accessory gear train, this engine adopts elastic belts in both gear trains;

[0019] When assembled, elastic belt 6 is stretched, generating sufficient belt tension. This tension ensures sufficient friction between elastic belt 6 and crankshaft pulley 1, water pump pulley 2, idler pulley A3, generator pulley 4, and idler pulley B5. When the engine is running, crankshaft pulley 1 rotates, driving water pump pulley 2, idler pulley A3, generator pulley 4, and idler pulley B5 to rotate together via elastic belt 6.

[0020] Specifically, the elastic belt 6 is in a tensioned state. Engine accessory belts typically utilize poly-V belts. Poly-V belts utilize a steel or polyester cord with high tensile and fatigue strength as a tensioning layer, coated with rubber or polyurethane. These belts offer advantages such as low specific gravity, high strength, excellent oil and wear resistance, a high coefficient of friction, and excellent transmission performance. In recent years, to reduce engine costs, many engine accessory poly-V belts have adopted self-tensioning elastic belts. These elastic belts are typically used in gear trains driven by a single-stage crankshaft pulley. To install the elastic belt, a belt installation tool is secured to the crankshaft pulley. The elastic belt is first installed on all the accessory pulleys in the gear train, except for the crankshaft pulley. Finally, the elastic belt is hooked onto the belt installation tool secured to the outside of the crankshaft pulley. The crankshaft pulley is rotated, simultaneously driving the belt installation tool. The rotation of the belt installation tool stretches the elastic belt and allows it to pass over the belt ribs on the crankshaft pulley, ultimately securing the elastic belt to the crankshaft pulley.

[0021] Specifically, the belt installation tool 7 includes an ear-shaped body 7-1, a belt rib 7-2, a belt installation surface 7-3, a driving square hole 7-4 and a fixing hole 7-5;

[0022] The belt rib 7-2 is arranged on the inclined surface of the ear-shaped main body 7-1, the belt mounting surface 7-3 is arranged on the outside of the belt rib 7-2, the driving square hole 7-4 and the fixing hole 7-5 are both arranged on the inner side of the ear-shaped main body 7-1, and the driving square hole 7-4 and the fixing hole 7-5 are adjacent to each other.

[0023] Specifically, the belt rib 7-2 is a spiral propulsion structure.

[0024] Specifically, the inclined surface of the belt mounting surface 7-3 coincides with the inclined surface of the ear-shaped main body 7-1, and the long side of the belt mounting surface 7-3 is in the opposite direction to the long side of the ear-shaped main body 7-1.

[0025] Working principle: When the utility model is working, first install the belt installation tool 7 on the water pump pulley 2, then install the elastic belt 6 into the wheel groove of the crankshaft pulley 1, and then install the elastic belt 6 into the wheel groove of the generator pulley 4, and then install the elastic belt 6 into the groove of the idler pulley A3, and then press the elastic belt 6 with the idler pulley B5, and finally hang the elastic belt 6 on the belt installation tool 7, rotate the belt installation tool 7, and since the belt rib 7-2 is a spiral propulsion structure, the belt rib 7-2 is used to push the elastic belt 6 onto the water pump pulley 2, remove the belt installation tool 7 and install and fix the water pump pulley 2 to complete the installation of the elastic belt 6.

[0026] In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0027] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0028] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A tool suitable for installing elastic belts in the inner grooves of multi-stage shock-absorbing pulleys, characterized by: It includes a crankshaft pulley (1), a water pump pulley (2), an idler pulley A (3), a generator pulley (4), an idler pulley B (5), an elastic belt (6) and a belt installation tool (7); The belt installation tool (7) is arranged on the smooth wheel surface of the water pump pulley (2), and the inner side of the elastic belt (6) is respectively installed in the outer grooves of the crankshaft pulley (1), the generator pulley (4) and the idler pulley A (3); The inner grooves of the idler pulley B (5) and the water pump pulley (2) are pressed against the outer side of the elastic belt (6); the idler pulley B (5) is arranged between the crankshaft pulley (1) and the generator pulley (4), and presses against the elastic belt (6) between the crankshaft pulley (1) and the generator pulley (4); the water pump pulley (2) is arranged between the crankshaft pulley (1) and the idler pulley A (3), and presses against the elastic belt (6) between the crankshaft pulley (1) and the idler pulley A (3).

2. A tool suitable for installing an elastic belt in the inner groove of a multi-stage shock-absorbing pulley according to claim 1, characterized in that: The elastic belt (6) is in a tensioned state.

3. The tool for installing an elastic belt in the inner groove of a multi-stage shock-absorbing pulley according to claim 1, characterized in that: The belt installation tool (7) comprises an ear-shaped main body (7-1), a belt rib (7-2), a belt installation surface (7-3), a driving square hole (7-4) and a fixing hole (7-5); The belt rib (7-2) is arranged on the inclined surface of the ear-shaped main body (7-1), the belt mounting surface (7-3) is arranged on the outer side of the belt rib (7-2), the driving square hole (7-4) and the fixing hole (7-5) are both arranged on the inner side of the ear-shaped main body (7-1), and the driving square hole (7-4) and the fixing hole (7-5) are adjacent to each other.

4. A tool suitable for installing an elastic belt in the inner groove of a multi-stage shock-absorbing pulley according to claim 3, characterized in that: The belt rib (7-2) is a spiral propulsion structure.

5. The tool for installing an elastic belt in the inner groove of a multi-stage shock-absorbing pulley according to claim 3, characterized in that: The inclined surface of the belt installation surface (7-3) coincides with the inclined surface of the ear-shaped main body (7-1), and the long side of the belt installation surface (7-3) is in the opposite direction to the long side of the ear-shaped main body (7-1).

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