A diesel engine combined free end output device

Abstract

The application discloses a diesel engine combined free end output device, which comprises a connecting flange connected to the free end of a crankshaft; long bolts are screwed into the bolt holes provided at the free end of the crankshaft after penetrating the preset through holes of an output flange, a damper, an intermediate flange, an adapter flange and the connecting flange in sequence, and the long bolts are integrated with the crankshaft; the long bolts are multiple and are distributed around the axis of the crankshaft; a combined pulley device is sleeved on the circumferential side of the intermediate flange; connecting screws are screwed into the screw holes provided in the combined pulley device after penetrating the flange edges at one end of the intermediate flange, and the combined pulley device is fixedly connected with the intermediate flange; a timing tooth disc is fixedly connected to the side of the combined pulley device through first fastening screws. The application can meet the needs of the pulley device, the timing gear, the damper and the power output at the same time, different auxiliary devices can be replaced to adapt to different working modes, and the application has high universality, compatibility and operation simplicity, and reduces the cost.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of diesel engine manufacturing, and particularly relates to a combined free end output device of a diesel engine. BACKGROUND

[0002] The free end of a diesel engine refers to the other end corresponding to the output end, also known as the front end or control end. This end is usually opposite to the output end (rear end) and is an important concept in the design of a diesel engine. The free end power output device of a diesel engine is one of the important components of a diesel engine. Most of the existing output device structures have one end of the connecting flange connected to the shafting and the other end connected to the damper. When the diesel engine is working, the power is transmitted through the connecting flange. The free end is often connected to a pulley device to connect different components of the engine, such as a water pump and a generator, through a transmission belt, so as to realize the transmission and distribution of power. Sometimes, a timing gear is also connected. The timing gear of a diesel engine is used to ensure the injection phase when the diesel engine is running correctly. The ECU is connected through the timing gear to control the operation of the diesel engine.

[0003] The existing free end output device has too single function and is difficult to meet the needs of the pulley device, the timing gear, the damper and the power output at the same time. In addition, different working scenes require different pulley devices or timing gears and other auxiliary devices. The existing free end output device with single function is difficult to replace the auxiliary devices, or leads to a large number of types of connecting flanges, poor universality and high cost. Especially for electronically controlled diesel engines, the ECU can be set to different working modes. The existing free end output device is inconvenient to replace the auxiliary devices. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the existing defects and provide a combined free end output device of a diesel engine, which aims to meet the needs of the pulley device, the timing gear, the damper and the power output at the same time, and to design a free end output device with replaceable auxiliary devices, so as to replace different components to adapt to different working modes, and to have high universality, compatibility and operation convenience, and to reduce cost.

[0005] To achieve the above object, the present application provides the following technical scheme: A diesel engine combined free end output device, comprising a connecting flange connected to the free end of a crankshaft; a long bolt is sequentially threaded through preset through holes of an output flange, a damper, an intermediate flange, an adapter flange and the connecting flange, and is screwed in a preset bolt hole of the free end of the crankshaft to be integrated with the crankshaft; the long bolt has a plurality of bolts, which are evenly distributed around the axis of the crankshaft; a combined pulley device is sleeved on the circumference of the intermediate flange; a connecting screw is threaded through the flange edge of one end of the intermediate flange and screwed into a preset screw hole of the combined pulley device to fix the combined pulley device and the intermediate flange; a timing tooth disc is fixed on the side of the combined pulley device by a first fastening screw, and is used for synchronous rotation of the timing tooth disc with the crankshaft.

[0006] As a further optimization, the adapter flange is provided with a plurality of countersunk holes evenly distributed around the circumference, and a second fastening screw is threaded through the countersunk holes and screwed into a preset screw hole of the connecting flange to fix the connecting flange and the adapter flange as a whole.

[0007] As a further optimization, the output flange and the intermediate flange are provided with a counterbore structure on opposite sides, which is used for coaxial positioning of the output flange, the damper and the intermediate flange when the damper is connected between the output flange and the intermediate flange.

[0008] As a further optimization, the combined pulley device comprises a plurality of pulleys arranged side by side; the outermost pulley is a positioning pulley, which is provided with a convex ring on the outer side, and the outer end of the convex ring is supported on the flange edge of the intermediate flange, which is used for axial positioning of the plurality of pulleys when the combined pulley device is installed on the intermediate flange; each pulley is provided with a screw hole for connecting the first fastening screw.

[0009] As a further optimization, the pulleys on the other end away from the positioning pulley are detachably connected with a plurality of counterweights on the outer side, which are used to offset the unbalance during rotation.

[0010] Compared with the prior art, the present application has the following advantages:

[0011] (1) It has universality. The output device described in the present application can be realized by only replacing the adapter flange and adjusting the position of the pulley according to different shaft systems and belt transmission requirements, reducing the need to design different output devices to adapt to different shaft systems, greatly reducing the manufacturing cost and improving the universality of the output device.

[0012] (2) It has compatibility. The output flange of the output device described in the present application can adjust the position of the counterbore and the connecting screw according to the needs of different external devices to meet the use under different requirements, and has high compatibility.

[0013] (3) has operational. The output device described in the application, timing gear, pulley and adapter flange are connected by bolts, when you need to replace, only to replace the individual components can be achieved, with higher operational flexibility.

[0014] (4) according to the missing tooth position of timing gear, through the speed phase sensor and firing sequence, to adjust the injection timing.

[0015] In summary, the application can meet the needs of pulley device, timing gear, shock absorber and power output, can replace different accessories to adapt to different working modes, and has higher versatility, compatibility and easy operation, reduce the cost. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the device model schematic diagram of the embodiment of the application;

[0017] Figure 2 is the flange connection intent of the embodiment of the application;

[0018] Figure 3 is the pulley installation schematic diagram of the embodiment of the application;

[0019] Figure 4 is the pulley device installation schematic diagram of the embodiment of the application;

[0020] Figure 5 is the output flange connection schematic diagram of the embodiment of the application;

[0021] Figure 6 is the missing tooth schematic diagram of the timing gear of the embodiment of the application.

[0022] The corresponding relationship between the technical features and the reference signs in the figure is: intermediate flange 1; combined pulley device 2; pulley 3; timing gear 4; first fastening screw 5; connecting screw 6; adapter flange 7; second fastening screw 8; connecting flange 9; output flange 10; bolt 11; shock absorber 12; equivalent block 13; mounting screw 14. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, not all.

[0024] Please refer to Figures 1-6The application provides a technical scheme: a diesel engine combined free end output device, which comprises an intermediate flange 1, a combined pulley device 2, a pulley 3, a timing gear 4, a first fastening screw 5, a connecting screw 6, an adapter flange 7, a second fastening screw 8 and a connecting flange 9. The intermediate flange 1 is used for connecting a shock absorber 12 and the adapter flange 7, and an outer circle mounting pulley belt gear device. The pulley belt gear device is composed of the combined pulley device 2, the pulley 3, the first fastening screw 5 and the connecting screw 6. A timing gear 4 is mounted on the left side of the pulley. Different timing gears 4 are replaced according to different environments to meet the use needs. The timing gear 4 is connected with the pulley through the first fastening screw 5. Threaded holes are arranged on the pulley to connect the intermediate flange 1 and the combined pulley device 2. The adapter flange 7 is provided with a countersunk hole to realize connection with the connecting flange 9. A stepped hole is arranged in the inner hole to connect with the shaft system end. The output intermediate flange 10 is provided with a positioning step matched with the inner hole of the shock absorber 12 to realize positioning. Meanwhile, bolt holes consistent with the shock absorber 12, the intermediate flange 1, the adapter flange 7 and the connecting flange 9 are arranged to realize connection with the shaft system.

[0025] The utility model provides a kind of combined general free end output device, is connected with shafting by adapter flange 7, and then realizes the output of power;Adapter flange 7 right side outer circle is matched with connecting flange 9, internal design step bore, according to the different shafting, only need to replace adapter flange 7 matched with shafting, adapter flange 7 is provided with counterbore, is connected with connecting flange 9 by second fastening screw 8;Connecting flange 9 left side is provided with positioning step, to install intermediate flange 1;Intermediate flange 1 left side and adapter flange 7 connecting place are provided with step bore, to be matched with adapter flange 7 positioning step, realize circumferential direction positioning, outer circle is provided with the step of installing pulley device and bolt hole of mounting bolt, is connected with pulley device by connecting screw 6;Pulley device is composed of pulley 3, combined pulley device 2 and connecting screw 6, according to different use requirements, the number of combined pulley device 2 can be adjusted to meet the requirements of various belt transmission devices;Timing gear 4 is connected with pulley by first fastening screw 5, according to different use requirements, only need to replace different gear 4 to meet the needs of ECU;Intermediate flange 1, connecting flange 9 and fastening flange 5 are provided with the same size, same position through hole, are connected with shock absorber, shafting by bolt, to achieve the purpose of output power.The left side of intermediate flange 1 is provided with a positioning step for positioning the installation of a shock absorber 12.The output intermediate flange 10 is provided with a step matched with the inner hole of the shock absorber 12 for positioning the installation of the shock absorber 12.The output intermediate flange 10, the shock absorber 12, the intermediate flange 1, the adapter flange 7, and the connecting flange 9 are provided with through holes of the same size and the same position, and are connected with the shafting by a long bolt 11, thereby achieving the purpose of output power and meeting the requirements of driving some important auxiliary devices with the free end output.

[0026] It can be seen that the embodiment has universality. According to different shafts and belt transmission requirements, the adapter flange and the position of the pulley can be replaced to achieve the output device, which reduces the need to design different output devices for different shafts, greatly reduces the manufacturing cost, and improves the universality of the output device. The embodiment has compatibility. The output flange of the output device can adjust the position of the stop and the connecting screw according to the needs of different external devices to meet different requirements, which has high compatibility. The embodiment has operability. The timing gear, the pulley and the adapter flange of the output device are connected by bolts, and only individual parts need to be replaced when replacement is needed, which has high operational flexibility. According to the missing tooth position of the timing gear, the rotational speed phase sensor and the firing sequence are used to adjust the injection timing.

[0027] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be made without departing from the spirit and scope of the present application, which is defined by the following claims and their equivalents.

Claims

1. A combined free-end output device for a diesel engine, comprising a connecting flange (9) connected to the free end of a crankshaft; characterized in that: Long bolts (11) are sequentially passed through the pre-set through holes on the output flange (10), damper (12), intermediate flange (1), transition flange (7) and connecting flange (9) and then screwed into the pre-set bolt holes on the free end of the crankshaft; there are multiple long bolts (11), which are evenly distributed around the axis of the crankshaft. A combined pulley device (2) is mounted on the circumferential side of the intermediate flange (1); a connecting screw (6) is screwed into the screw hole of the combined pulley device (2) after passing through the flange edge of one end of the intermediate flange (1), thereby fixing the combined pulley device (2) to the intermediate flange (1). The timing gear (4) is fixed to the side of the combined pulley device (2) by the first fastening screw (5) for the timing gear (4) to rotate synchronously with the crankshaft.

2. The diesel engine combined free-end output device according to claim 1, characterized in that: The adapter flange (7) is provided with a plurality of countersunk holes evenly distributed around the circumference. The second fastening screw (8) passes through the countersunk holes and is screwed into the screw hole of the connecting flange (9) to fix the connecting flange (9) and the adapter flange (7) together as one unit.

3. The diesel engine combined free-end output device according to claim 1, characterized in that: The output flange (10) and the intermediate flange (1) are provided with a stop structure on opposite sides, which is used to ensure that the output flange (10), the shock absorber and the intermediate flange (1) are coaxially positioned when the shock absorber is connected between the output flange (10) and the intermediate flange (1).

4. A diesel engine combined free-end output device according to claim 1, characterized in that: The combined pulley device (2) includes multiple pulleys (3) arranged side by side; the outermost pulley (3) is a positioning pulley with a convex ring on its outer side, and the outer end of the convex ring supports the flange edge of the intermediate flange (1); each pulley (3) is provided with a screw hole for connecting the first fastening screw (5).

5. A diesel engine combined free-end output device according to claim 4, characterized in that: Several equivalent blocks (13) are detachably connected to the outside of the pulley (3) at the other end away from the positioning pulley to counteract the imbalance during rotation.

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