Manual tensioning wheel suitable for diesel engine

Abstract

A manual tensioning wheel suitable for a diesel engine belongs to the technical field of diesel engines, the manual tensioning wheel is fixed on a gear chamber cover through bolts and located between a water pump belt wheel and a crankshaft belt wheel, a belt is wound on the water pump belt wheel, the manual tensioning wheel and the crankshaft belt wheel, and the belt is tensioned through adjustable displacement of the manual tensioning wheel. The tensioning device has the advantages that the structural layout is compact, the tensioning wheel and the fixing base are arranged in a stacked mode, occupied space can be effectively reduced, wheel train arrangement of a diesel engine is optimized, the assembling technology is reasonable, reliability is good, and a tensioning belt can be operated by one person.

Description

Technical Field

[0001] The utility model belongs to the technical field of diesel engines, and particularly relates to a manual tensioning wheel suitable for diesel engines. Background Art

[0002] The tensioner is a crucial component in a diesel engine's intake system. With the continuous evolution of diesel engines, component placement consumes significant space, making the layout of the gear train particularly crucial. Conventional tensioners typically require two people to operate: one to bend the tensioner and the other to insert the belt, making assembly time-consuming and labor-intensive. Given these challenges, this project focused on optimizing layout and simplifying operation, developing a manual tensioner suitable for diesel engines. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a manual tensioner suitable for diesel engines. It adopts the design concept of optimized layout and simple operation, and redesigns the tensioner structure. It has the advantages of small space occupancy, convenient layout and single-person operation.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical solution: a manual tensioner suitable for a diesel engine, the manual tensioner is fixed to the gear chamber cover by bolts, and is located between the water pump pulley and the crankshaft pulley. The belt is wound around the water pump pulley, the manual tensioner and the crankshaft pulley, and the belt is tensioned by the adjustable displacement of the manual tensioner.

[0005] The manual tensioning wheel includes a fixed base, a slider, an adjusting screw, a tensioning pulley, an axis core and a locking nut. The fixed base is composed of a mounting base and an adjusting base connected as a whole. The mounting base is provided with a threaded hole, and the fixed base is connected to the gear chamber cover with a bolt. The adjusting base is a rectangular box structure with an open one side. A strip slide is provided horizontally on the bottom surface of the adjusting base, and a "U"-shaped groove for installing the adjusting screw is provided on one side of the adjusting base. The rod of the adjusting screw passes through the "U"-shaped groove and extends into the interior of the adjusting base. A slider is provided on the rod of the adjusting screw, and the slider is threadedly connected to the adjusting screw. One end of the axis core is connected to the slider, and the axis core is provided with a tensioning pulley after passing through the strip slide, and a locking nut is provided at the end of the axis core.

[0006] A triangular rib is provided at the connection between the mounting base and the adjustment seat of the fixed base to increase the strength; the upper left corner of the fixed base is subjected to a shape-conforming weight reduction treatment to avoid interference with other components.

[0007] A limiting ring that cooperates with the "U"-shaped groove is provided at the rod body of the adjusting screw near the end. The limiting ring and the handle of the adjusting screw cooperate with the "U"-shaped groove to limit the adjusting screw.

[0008] The tension pulley and the fixed base are arranged in an overlapping manner to reduce space occupation. A bearing is provided inside the tension pulley, and end covers are provided on both end surfaces of the bearing for sealing to extend the service life.

[0009] The locking nut locks the position of the shaft core and the tensioning pulley sleeved on the shaft core.

[0010] The beneficial effects of the utility model are: compact structure and layout, overlapping arrangement of the tensioning wheel and the fixed base, which can effectively reduce space occupation, thereby optimizing the gear train arrangement of the diesel engine, reasonable assembly process, good reliability, and a single person can operate the tensioning belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the assembly relationship of the utility model;

[0012] Figure 2 This is a schematic top view of the utility model;

[0013] Figure 3 This is a schematic diagram of the back of the utility model;

[0014] Figure 4 It is a schematic cross-sectional view of the utility model.

[0015] In the figure: 1. Water pump pulley, 2. Belt, 3. Tensioning pulley, 301. Bearing, 302. End cover, 4. Gear chamber cover, 5. Crankshaft pulley, 6. Fixed base, 601. Mounting base plate, 602. Adjusting seat, 603. Strip slide, 604. "U"-shaped groove, 605. Triangular rib, 7. Adjusting screw, 701. Limiting ring, 8. Slider, 9. Shaft core, 10. Locking nut. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings of this specification to clearly and completely describe the technical solution of the utility model. It should be noted that the embodiments described are only some of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the utility model.

[0017] See also Figures 1-4A manual tensioner suitable for a diesel engine. The manual tensioner is fixed to the gear chamber cover 4 by bolts and is located between the water pump pulley 1 and the crankshaft pulley 5. The belt 2 is wound around the water pump pulley 1, the manual tensioner and the crankshaft pulley 5. The belt 2 is tensioned by the adjustable displacement of the manual tensioner. The manual tensioning wheel includes a fixed base 6, a slider 8, an adjusting screw 7, a tensioning pulley 3, an axis core 9 and a locking nut 10. The fixed base 6 is composed of a mounting base 601 and an adjusting base 602 connected as a whole. The mounting base 601 is provided with a threaded hole, and the fixed base 6 is connected to the gear chamber cover 4 with a bolt. The adjusting base 602 is a rectangular box structure with an open side. A strip slide 603 is provided horizontally on the bottom surface of the adjusting base 602, and a side surface of the adjusting base 602 is provided with a "U"-shaped groove 604 for installing the adjusting screw 7. The rod of the adjusting screw 7 passes through the "U"-shaped groove 604 and extends into the interior of the adjusting base 602. The rod of the adjusting screw 7 is sleeved with a slider 8, and the slider 8 is threadedly connected to the adjusting screw 7. One end of the axis core 9 is connected to the slider 8. The axis core 9 is sleeved with the tensioning pulley 3 after passing through the strip slide 603, and a locking nut 10 is provided at the end of the axis core 9. The connection between the mounting base 601 of the fixed base 6 and the adjustment seat 602 is provided with a triangular rib 605 for increasing strength; the upper left corner of the fixed base 6 is subjected to a shape-conforming weight reduction treatment to avoid interference with other components. The shaft of the adjusting screw 7 near the end is provided with a limiting ring 701 that cooperates with the "U"-shaped groove 604. The limiting ring 701 and the handle of the adjusting screw 7 cooperate with the "U"-shaped groove 604 to limit the adjusting screw 7. The tensioning pulley 3 and the fixed base 6 are arranged to overlap to reduce space occupation. A bearing 301 is provided inside the tensioning pulley 3. Both end faces of the bearing 301 are provided with end caps 302 for sealing to extend the service life. A locking nut 10 is provided at the end of the shaft core 9, and the locking nut 10 is used to lock the position of the shaft core 9 and the tensioning pulley 3 mounted on the shaft core 9.

[0018] When the utility model is in use:

[0019] The manual tensioner adjusts the left and right movement of the tension pulley 3 to tension the belt 2 by rotating the adjusting screw 7. The flange end of the adjusting screw 7 and the middle of the rod body are provided with a limit ring 701 that cooperates with the "U"-shaped groove 604 to ensure that the slider 8 moves left and right on it when the adjusting screw 7 is rotated, thereby driving the shaft core 9 and the tension pulley 3 to move left and right.

[0020] The specific operation steps of tensioning the belt of the manual tensioning wheel are as follows: first, fix the manual tensioning wheel on the gear chamber cover 4 with a bolt, then loosen the locking nut 10, rotate the adjusting screw 7 to drive the slider 8 to move in the adjusting seat 602, and the slider 8 drives the shaft core 9 and the tensioning pulley 3 mounted on the shaft core 9 to move to the far right, and then sleeve the belt 2 on the tensioning pulley 3, and then rotate the adjusting screw 7 to make the tensioning pulley 3 gradually move to the left to tension the belt 2, and after the belt 2 is tensioned, tighten the locking nut 10 to complete the operation. The above steps can be tightened by one operator using an air gun, which is convenient and quick to use;

[0021] In summary, the present invention adopts a design concept that combines optimized layout and simple operation, arranges the fixed base 6 and the tensioning pulley 3 in an overlapping manner, reduces the layout space, adopts a double triangular rib 605 structure to improve the structural strength of the fixed base 6, and adds dustproof end covers 302 on both sides of the bearing 301 to increase the service life of the bearing 301. Through the implementation of the above scheme, the problems of inconvenient operation and insufficient layout space existing in the prior art can be well solved.

[0022] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0023] The parts not described in detail in this utility model are prior art.

Claims

1. A manual tensioner suitable for a diesel engine, characterized by: The manual tensioning wheel is fixed to the gear chamber cover (4) by bolts and is located between the water pump pulley (1) and the crankshaft pulley (5). The belt (2) is wound around the water pump pulley (1), the manual tensioning wheel and the crankshaft pulley (5). The belt (2) is tensioned by the adjustable displacement of the manual tensioning wheel. The manual tensioning wheel comprises a fixed base (6), a slider (8), an adjusting screw (7), a tensioning pulley (3), a locking nut (10) and a shaft core (9). The fixed base (6) is composed of a mounting base (601) and an adjusting base (602) connected as a whole. The mounting base (601) is provided with a threaded hole, and the fixed base (6) is connected to the gear chamber cover (4) with a bolt. The adjusting base (602) is a rectangular box structure with an open side. A strip-shaped slide groove (603) is provided on the bottom surface of the adjusting base (602). A "U"-shaped groove (604) for mounting an adjusting screw (7) is provided on one side of the seat (602). The rod of the adjusting screw (7) passes through the "U"-shaped groove (604) and extends into the interior of the adjusting seat (602). A slider (8) is sleeved on the rod of the adjusting screw (7). The slider (8) is threadedly connected to the adjusting screw (7). One end of the shaft core (9) is connected to the slider (8). The shaft core (9) is sleeved with a tensioning pulley (3) after passing through the strip-shaped slide groove (603). A locking nut (10) is provided at the end of the shaft core (9).

2. A manual tensioner suitable for a diesel engine according to claim 1, characterized in that: A triangular rib (605) is provided at the connection between the mounting base (601) of the fixed base (6) and the adjustment seat (602) for increasing strength; the upper left corner of the fixed base (6) is subjected to a shape-conforming weight reduction treatment to avoid interference with other components.

3. The manual tensioner suitable for a diesel engine according to claim 1, characterized in that: A limiting ring (701) that cooperates with the "U"-shaped groove (604) is provided at the rod body of the adjusting screw (7) near the end thereof. The limiting ring (701) and the handle of the adjusting screw (7) cooperate with the "U"-shaped groove (604) to limit the adjusting screw (7).

4. The manual tensioner suitable for a diesel engine according to claim 1, characterized in that: The tensioning pulley (3) and the fixed base (6) are arranged in an overlapping manner to reduce space occupation. A bearing (301) is provided inside the tensioning pulley (3). Both end surfaces of the bearing (301) are provided with end covers (302) for sealing to extend service life.

5. The manual tensioner suitable for a diesel engine according to claim 1, characterized in that: The locking nut (10) locks the position of the shaft core (9) and the tensioning pulley (3) sleeved on the shaft core (9).

Images