Crankshaft pulley capable of automatically adjusting tension

Abstract

The utility model provides a crankshaft pulley capable of automatically adjusting tension, and belongs to the technical field of tension adjustment. The crankshaft belt pulley capable of automatically adjusting tension comprises a belt pulley body, a sleeve, a hydraulic support arm and a pressure adjusting auxiliary wheel, and a quick-connection dismounting mechanism is arranged outside the belt pulley body and comprises a connecting column, a connecting bearing, a connecting screw rod, a locking screw disc and the sleeve; a structural groove is formed in the outer portion of the sleeve, a tension adjusting mechanism is arranged in the structural groove and comprises a hydraulic supporting arm, a movable supporting arm, a pressure sensing shaft seat and a pressure adjusting auxiliary wheel, and the pressure adjusting auxiliary wheel is in contact connection with the outer portion of the belt wheel body and connected with a transmission belt. The belt tension adjusting device has the advantages of being convenient to disassemble and capable of adjusting the belt tension in real time.

Description

Technical Field

[0001] The utility model relates to the technical field of tension adjustment, in particular to a crankshaft pulley capable of automatically adjusting tension. Background Art

[0002] The crankshaft pulley is a critical component at the front end of the engine, driving important accessories such as the alternator and water pump. It connects the camshaft and crankshaft via a drive belt, ensuring the synchronization of intake and exhaust timing and the ignition sequence. The crankshaft pulley's design is simple yet crucial, and its failure can cause engine accessory failure or even produce knocking noise.

[0003] During use, the existing crankshaft pulley requires a long space for disassembly. At the same time, after long-term use, the elasticity of the belt decreases and the tension decreases, which makes it easy for the belt to come off. Therefore, the present application provides a crankshaft pulley that automatically adjusts the tension. Utility Model Content

[0004] In order to solve the above technical problems, the utility model proposes a crankshaft pulley with automatic tension adjustment, which is easy to disassemble and can adjust the belt tension in real time.

[0005] The technical solution of the present utility model is achieved as follows:

[0006] A crankshaft pulley with automatic tension adjustment, comprising a pulley body, a sleeve, a hydraulic support arm, and a pressure-regulating auxiliary pulley, wherein a quick-connect and disassembly mechanism is provided on the outside of the pulley body, and the quick-connect and disassembly mechanism comprises a connecting column, a connecting bearing, a connecting screw, a locking screw disc, and a sleeve;

[0007] A structural groove is provided on the outside of the sleeve, and a tension adjustment mechanism is provided inside the structural groove. The tension adjustment mechanism includes a hydraulic support arm, a movable support arm, a pressure-sensitive shaft seat and a pressure-regulating auxiliary wheel. The pressure-regulating auxiliary wheel is in contact with the outside of the pulley body and is connected to a transmission belt.

[0008] Furthermore, a contact surface is provided on the outside of the pulley body, anti-slip rings are fixedly connected on both sides of the contact surface, a connecting groove is provided at the center of the pulley body, and a support plate is fixedly connected inside the pulley body.

[0009] Furthermore, the connecting column is movably connected inside the connecting groove, the connecting bearing is fixedly connected to the outside of the connecting column, the connecting screw is fixedly connected to the side of the connecting bearing away from the connecting column, the locking screw plate is threadedly connected to the outside of the side of the connecting column away from the connecting bearing, and the sleeve is fixedly connected to the outside of the side of the connecting bearing away from the connecting column.

[0010] Furthermore, a driving shaft is fixedly connected inside the structural groove, a driven shaft is fixedly connected inside the structural groove, the hydraulic support arm is fixedly connected to the outside of the driving shaft, the movable support arm is fixedly connected to the outside of the driven shaft, the pressure-sensing shaft seat is fixedly connected to the middle position of the movable support arm, and the pressure-regulating auxiliary wheel is fixedly connected to the outside of the end of the movable support arm away from the driven shaft.

[0011] Furthermore, there are multiple groups of support plates and they are circumferentially distributed inside the support plates, and there are two groups of anti-slip rings and they are symmetrically distributed on both sides of the contact surface.

[0012] Furthermore, a mounting plate is fixedly connected to the outside of the sleeve.

[0013] Furthermore, the hydraulic support arm is detachably connected to the pressure-sensitive shaft seat.

[0014] Furthermore, the structural groove is fan-shaped, and the angle of the structural groove is ninety degrees.

[0015] The utility model has the following beneficial effects:

[0016] 1. By setting the connecting column, connecting bearing, connecting screw and locking screw plate, the device can independently disassemble and assemble the pulley body, which is convenient for maintenance and replacement of the pulley body and improves maintenance convenience.

[0017] 2. By setting up hydraulic support arms, movable support arms, pressure-sensitive shaft seats and pressure-regulating auxiliary wheels, the device can measure the real-time tension of the transmission belt through the pressure exerted on the pressure-sensitive shaft seats, and adjust the tension of the transmission belt through the pressure-regulating auxiliary wheels to improve internal safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall appearance of the utility model;

[0019] Figure 2 This utility model Figure 1 Another perspective diagram in ;

[0020] Figure 3 This utility model Figure 1 Schematic diagram of some structures in ;

[0021] Figure 4 This utility model Figure 3 Another perspective diagram in ;

[0022] Figure 5 This utility model Figure 1 Exploded view of part of the structure.

[0023] Among them: 1. Pulley body; 2. Contact surface; 3. Anti-slip ring; 4. Connecting groove; 5. Support plate; 6. Connecting column; 7. Connecting bearing; 8. Connecting screw; 9. Locking screw plate; 10. Sleeve; 11. Mounting plate; 12. Structural groove; 13. Driving shaft; 14. Driven shaft; 15. Hydraulic support arm; 16. Movable support arm; 17. Pressure-sensing shaft seat; 18. Pressure-regulating auxiliary wheel; 19. Belt. DETAILED DESCRIPTION

[0024] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. 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.

[0025] Example 1

[0026] See Figures 1 to 5 As shown, the present invention provides a crankshaft pulley with automatic tension adjustment, comprising a pulley body 1, a sleeve 10, a hydraulic support arm 15, and a pressure-regulating auxiliary pulley 18. A quick-connect and disassembly mechanism is provided on the outside of the pulley body 1. The quick-connect and disassembly mechanism comprises a connecting column 6, a connecting bearing 7, a connecting screw 8, a locking screw disc 9, and a sleeve 10.

[0027] A structural groove 12 is provided on the outside of the sleeve 10, and a tension adjustment mechanism is provided inside the structural groove 12. The tension adjustment structure includes a hydraulic support arm 15, a movable support arm 16, a pressure-sensitive shaft seat 17, and a pressure-regulating auxiliary wheel 18. The pressure-regulating auxiliary wheel 18 is in contact with the outside of the pulley body 1 and is connected to a transmission belt 19.

[0028] The outside of the sleeve 10 is fixedly connected to a mounting plate 11 , the hydraulic support arm 15 is detachably connected to the pressure-sensitive shaft seat 17 , and the structural groove 12 is fan-shaped, with an angle of ninety degrees.

[0029] Specifically, when performing maintenance and disassembly, the locking screw disk 9 is removed by tools, and then the pulley body 1 can be taken out as a whole and inspected. After the subsequent maintenance is completed, the above operation can be repeated to complete the installation. The operating space required is small and the operation is more convenient.

[0030] Example 2

[0031] Furthermore, a contact surface 2 is provided on the outside of the pulley body 1, and anti-slip rings 3 are fixedly connected on both sides of the contact surface 2. A connecting groove 4 is provided at the center of the pulley body 1, and a support plate 5 is fixedly connected to the inside of the pulley body 1. The connecting column 6 is movably connected to the inside of the connecting groove 4, the connecting bearing 7 is fixedly connected to the outside of the connecting column 6, the connecting screw 8 is fixedly connected to the side of the connecting bearing 7 away from the connecting column 6, the locking screw plate 9 is threadedly connected to the outside of the side of the connecting column 6 away from the connecting bearing 7, and the sleeve 10 is fixedly connected to the connecting bearing 7 away from the connecting column 6, a driving shaft 13 is fixedly connected to the inside of the structural groove 12, a driven shaft 14 is fixedly connected to the inside of the structural groove 12, a hydraulic support arm 15 is fixedly connected to the outside of the driving shaft 13, a movable support arm 16 is fixedly connected to the outside of the driven shaft 14, a pressure-sensing shaft seat 17 is fixedly connected to the middle position of the movable support arm 16, a pressure-regulating auxiliary wheel 18 is fixedly connected to the outside of the end of the movable support arm 16 away from the driven shaft 14, there are multiple groups of support plates 5 and they are distributed circumferentially inside the support plate 5, and there are two groups of anti-slip rings 3 and they are symmetrically distributed on both sides of the contact surface 2.

[0032] By making the above arrangement, during installation, the mounting plate 11 is fixed to the outer wall of the engine, and at the same time, through the connection between the sleeve 10 and the connecting bearing 7, during the rotation of the pulley body 1, the connecting torque is eliminated through the connecting bearing 7, and during the rotation, the transmission belt 19 is respectively in contact with the pressure-regulating auxiliary wheel 18 and the pulley body 1, and the pressure generated by the contact between the transmission belt 19 and the pressure-regulating auxiliary wheel 18 is transmitted to the pressure-sensing shaft seat 17 and monitored. If the tension of the transmission belt 19 is outside the safety threshold, the hydraulic support arm 15 is turned on to extend or contract to adjust the pressure of the contact between the pressure-regulating auxiliary wheel 18 and the transmission belt 19, thereby adjusting the tension of the transmission belt 19 to ensure the safety of the operation of the device.

[0033] 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.

Claims

1. A crankshaft pulley with automatic tension adjustment, characterized in that: The invention comprises a pulley body (1), a sleeve (10), a hydraulic support arm (15) and a pressure-regulating auxiliary wheel (18), wherein a quick-connection and disassembly mechanism is provided on the outside of the pulley body (1), and the quick-connection and disassembly mechanism comprises a connecting column (6), a connecting bearing (7), a connecting screw (8), a locking screw disc (9) and a sleeve (10); A structural groove (12) is provided on the outside of the sleeve (10), and a tension adjustment mechanism is provided inside the structural groove (12). The tension adjustment mechanism includes a hydraulic support arm (15), a movable support arm (16), a pressure-sensitive shaft seat (17), and a pressure-regulating auxiliary wheel (18). The pressure-regulating auxiliary wheel (18) is in contact with the outside of the pulley body (1) and is connected to a transmission belt (19).

2. The crankshaft pulley with automatic tension adjustment according to claim 1, characterized in that: The pulley body (1) is provided with a contact surface (2) on the outside, anti-slip rings (3) are fixedly connected to both sides of the contact surface (2), a connecting groove (4) is provided at the center of the pulley body (1), and a support plate (5) is fixedly connected to the inside of the pulley body (1).

3. The crankshaft pulley with automatic tension adjustment according to claim 1, characterized in that: The connecting column (6) is movably connected inside the connecting groove (4), the connecting bearing (7) is fixedly connected to the outside of the connecting column (6), the connecting screw (8) is fixedly connected to the side of the connecting bearing (7) away from the connecting column (6), the locking screw plate (9) is threadedly connected to the outside of the side of the connecting column (6) away from the connecting bearing (7), and the sleeve (10) is fixedly connected to the outside of the side of the connecting bearing (7) away from the connecting column (6).

4. The crankshaft pulley with automatic tension adjustment according to claim 1, characterized in that: A driving shaft (13) is fixedly connected inside the structural groove (12), a driven shaft (14) is fixedly connected inside the structural groove (12), the hydraulic support arm (15) is fixedly connected to the outside of the driving shaft (13), the movable support arm (16) is fixedly connected to the outside of the driven shaft (14), the pressure-sensing shaft seat (17) is fixedly connected to the middle position of the movable support arm (16), and the pressure-regulating auxiliary wheel (18) is fixedly connected to the outside of one end of the movable support arm (16) away from the driven shaft (14).

5. The crankshaft pulley with automatic tension adjustment according to claim 2, characterized in that: The support plates (5) are provided in multiple groups and are circumferentially distributed inside the support plates (5); the anti-slip rings (3) are provided in two groups and are symmetrically distributed on both sides of the contact surface (2).

6. The crankshaft pulley with automatic tension adjustment according to claim 3, characterized in that: The sleeve (10) is externally fixedly connected with a mounting plate (11).

7. The crankshaft pulley with automatic tension adjustment according to claim 1, characterized in that: The hydraulic support arm (15) is detachably connected to the pressure-sensitive shaft seat (17).

8. The crankshaft pulley with automatic tension adjustment according to claim 1, characterized in that: The structural groove (12) is fan-shaped, and the angle of the structural groove (12) is ninety degrees.

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