Engine belt pulley

Abstract

The utility model discloses an engine belt pulley, belongs to the technical field of belt pulley transmission, and solves the problem that a traditional engine belt driving system is generally driven by a single belt pulley and can only be used for transmission of single equipment. The engine belt pulley comprises a pump type wheel body and a shaft type wheel body, one end of the pump type wheel body is connected with the shaft type wheel body, the diameter of the pump type wheel body is smaller than that of the shaft type wheel body, the central axis of the pump type wheel body coincides with the central axis of the shaft type wheel body, a plurality of first belt pulley grooves are formed in the circumferential face of the pump type wheel body, and a plurality of second belt pulley grooves are formed in the circumferential face of the shaft type wheel body. A plurality of second belt wheel grooves are formed in the circumferential face of the shaft wheel body, a receding groove is formed in the end, away from the shaft wheel body, of the pump wheel body, a plurality of engine connection fixing holes are formed in the receding groove, and a preset groove is formed in the end, close to the shaft wheel body, of the pump wheel body. According to the engine belt pulley, an engine can drive a plurality of devices at the same time, and the engine belt pulley has better applicability and efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to the pulley drive field, more specifically, it relates to a kind of engine pulley. BACKGROUND

[0002] The main role of engine belt drive system is to transmit power, to ensure the normal operation of engine and other equipment. Specifically, the belt drive system transmits the power generated by the engine to each device, such as generator, water pump, air conditioner compressor and power steering pump, so as to ensure the normal work of these devices.

[0003] In the prior art, the traditional engine belt drive system usually uses a single pulley for driving, mainly for the transmission of single device. However, in some application occasions, especially in the case of driving multiple devices simultaneously, such as ships, the existing pulley drive cannot meet the requirements. These pulleys usually cannot provide enough grooves to meet the shaft generator set requirements, and the transmission efficiency is low when multiple devices are running simultaneously, and the load is uneven. SUMMARY

[0004] The technical problem to be solved by the utility model is to solve the above problems of the prior art, to provide an engine pulley, so that the engine can drive multiple devices simultaneously, with better applicability and efficiency.

[0005] The technical scheme of the utility model is as follows: an engine pulley, comprising a pump type wheel body and a shaft type wheel body, one end of the pump type wheel body is connected with the shaft type wheel body, the diameter of the pump type wheel body is smaller than the diameter of the shaft type wheel body, the pump type wheel body and the shaft type wheel body are integrally formed, and the central axis of the pump type wheel body coincides with the central axis of the shaft type wheel body, the circumferential surface of the pump type wheel body is provided with a plurality of first pulley grooves, the circumferential surface of the shaft type wheel body is provided with a plurality of second pulley grooves, one end of the pump type wheel body away from the shaft type wheel body is provided with a clearance groove, a plurality of engine coupling fixing holes are arranged in the clearance groove, and one end of the pump type wheel body close to the shaft type wheel body is provided with a preset groove, which is in communication with the engine coupling fixing hole.

[0006] As a further improvement, the first pulley groove has four, and the second pulley groove has six.

[0007] Further, a first step surface is arranged at the joint of the circumferential surface of the pump type wheel body and the circumferential surface of the shaft type wheel body, and a round corner is arranged at the joint of the first step surface and the circumferential surface of the pump type wheel body and the shaft type wheel body.

[0008] Further, the diameter of the clearance groove gradually increases from one end close to the shaft type wheel body to one end away from the shaft type wheel body.

[0009] Further, the wall thickness a of the pump type wheel body is greater than the wall thickness b of the shaft type wheel body.

[0010] Further, the wall thickness c at the joint of the pump type wheel body and the shaft type wheel body is greater than the wall thickness b of the shaft type wheel body.

[0011] Further, a plurality of lightening holes are arranged on the end faces of the pump type wheel body and the shaft type wheel body.

[0012] Further, the bottom of the first pulley groove and the second pulley groove is provided with a plurality of mounting grooves, the top of the mounting grooves is slidably provided with a friction device, the friction device comprises a friction plate, a spring and two structure-same guide rods, the cross section of the friction plate is arc-shaped, the top of the two guide rods is connected with the two ends of the bottom of the friction plate respectively, the two guide rods are slidably arranged in the mounting grooves, one end of the spring is connected with the bottom of the mounting groove, and the other end of the spring is connected with the bottom of the friction plate.

[0013] Further, the arc surface of the friction plate is adapted to the arc surface of the first pulley groove and the second pulley groove.

[0014] Further, the sidewall of the first pulley groove and the second pulley groove is provided with anti-skid lines.

[0015] Beneficial effects

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] The utility model discloses a kind of engine pulley, by being respectively arranged multiple first pulley groove, second pulley groove on the circumferential surface of pump type wheel body, shaft type wheel body, this pulley is driven by first pulley groove, second pulley groove with other equipment belt, so that engine can drive multiple equipment simultaneously, with better applicability and efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the front view cross-sectional structure schematic drawing of the utility model;

[0019] Figure 2 It is Figure 1 The cross-sectional structure schematic drawing of A-A in it;

[0020] Figure 3 It is Figure 2 The structure enlarged schematic drawing of B in it;

[0021] Figure 4 It is the bottom view structure schematic drawing of the utility model.

[0022] Wherein: 1-pump type wheel body, 2-shaft type wheel body, 3-first pulley groove, 4-second pulley groove, 5-engine coupling fixed hole, 6-pre-set groove, 7-first step surface, 8-give way groove, 9-mounting groove, 10-friction plate, 11-spring, 12-guide rod, 13-slotted, 14-weight reduction hole. DETAILED DESCRIPTION

[0023] The utility model will be further explained in connection with the specific implementation examples in the drawings.

[0024] Reference Figures 1-4 An engine pulley, comprising a pump type wheel body 1 and a shaft type wheel body 2, one end of the pump type wheel body 1 is connected with the shaft type wheel body 2, the diameter of the pump type wheel body 1 is smaller than that of the shaft type wheel body 2, the pump type wheel body 1 and the shaft type wheel body 2 are integrally formed, which facilitates the manufacture of the pulley and effectively improves the overall structural strength of the pulley; and the central axis of the pump type wheel body 1 coincides with that of the shaft type wheel body 2, ensuring that the pulley will not deviate during operation; the circumferential surface of the pump type wheel body 1 is provided with a plurality of first pulley grooves 3, the circumferential surface of the shaft type wheel body 2 is provided with a plurality of second pulley grooves 4, one end of the pump type wheel body 1 away from the shaft type wheel body 2 is provided with a give way groove 4, a plurality of engine coupling fixed holes 5 are arranged in the give way groove 4, one end of the pump type wheel body 1 close to the shaft type wheel body 2 is provided with a pre-set groove 6, the pre-set groove 6 is in communication with the engine coupling fixed hole 5, during installation, the plurality of engine coupling fixed holes 5 are aligned with a plurality of threaded holes on the engine crankshaft one by one, and then the bolts are sequentially threaded through the pre-set groove 6, the engine coupling fixed hole 5 and the threaded holes on the crankshaft for threaded connection, so as to mount the pulley on the crankshaft; one end of the pump type wheel body 1 is connected with the engine transmission, the pulley is driven by the first pulley groove 3 and the second pulley groove 4 and other equipment belts, so that the engine can drive multiple devices at the same time.

[0025] In the embodiment, there are four first pulley grooves 3 and six second pulley grooves 4, the pulley is driven by the first pulley groove 3 and the second pulley groove 4 and other equipment belts, so that the engine can drive multiple devices at the same time; in other embodiments, the number of first pulley grooves 3 and second pulley grooves 4 can be increased, so as to increase the equipment connected by the pulley.

[0026] In the embodiment, the circumferential surface of the pump type wheel body 1 and the circumferential surface of the shaft type wheel body 2 are provided with first step surfaces 7 at the joint, and the circumferential surface of the pump type wheel body 1 and the circumferential surface of the shaft type wheel body 2 are provided with round corners at the joint; the edges of the first step surfaces 7 are designed with round corners, which avoids the abrasion of the side surface of the belt during installation or disassembly, effectively prolonging the service life of the belt.

[0027] In the embodiment, the diameter of the accommodation groove 8 gradually increases from the end close to the shaft wheel body 2 to the end away from the shaft wheel body 2, the pump wheel body 1 is directly connected with the crankshaft of the engine, and the diameter of the accommodation groove 8 gradually increases from the inside to the outside, so that the installation of the belt pulley is facilitated, and the installation efficiency is effectively improved.

[0028] In the embodiment, the wall thickness a of the pump wheel body 1 is greater than the wall thickness b of the shaft wheel body 2. Since the pump wheel body 1 is connected with the engine for transmission, the pump wheel body 1 is subjected to a greater force, and therefore, the pump wheel body 1 needs to have a higher structural strength than the shaft wheel body 2 to ensure that the pump wheel body 1 will not be damaged due to excessive force during operation. Preferably, the ratio of the wall thickness a of the pump wheel body 1 to the wall thickness b of the shaft wheel body can be 3:1, so that the structural strength of the pump wheel body 1 is reduced under the condition of meeting the force, thereby reducing the overall weight of the belt pulley and the manufacturing cost of the belt pulley.

[0029] In the embodiment, the wall thickness c of the connection part of the pump wheel body 1 and the shaft wheel body 2 is greater than the wall thickness b of the shaft wheel body 2, so that the connection strength between the pump wheel body 1 and the shaft wheel body 2 is effectively improved. Preferably, the wall thickness c of the connection part of the pump wheel body 1 and the shaft wheel body 2 is less than the wall thickness a of the pump wheel body 1, so that the overall weight of the belt pulley is reduced under the condition of ensuring the connection strength between the pump wheel body 1 and the shaft wheel body 2, thereby reducing the weight and the manufacturing cost of the belt pulley.

[0030] In the embodiment, a plurality of weight-reducing holes 14 are arranged on the end faces of the pump wheel body 1 and the shaft wheel body 2, and the weight-reducing holes 14 on the shaft wheel body 2 are arranged on the end face of the connection part of the pump wheel body 1 and the shaft wheel body 2. The weight-reducing holes 14 further reduce the overall weight of the pump wheel body 1 and the shaft wheel body 2, thereby reducing the manufacturing cost of the belt pulley.

[0031] In the embodiment, a plurality of mounting grooves 9 are arranged on the bottoms of the first belt groove 3 and the second belt groove 4, a friction device is slidably mounted on the top of the mounting groove 9, the friction device comprises a friction plate 10, a spring 11 and two guide rods 12 which have the same structure, the cross section of the friction plate 10 is arc-shaped, the two guide rods 12 are respectively connected with the two ends of the bottom of the friction plate 10, the two guide rods 12 are slidably arranged in the mounting groove 9, one end of the spring 11 is connected with the bottom of the mounting groove 9, and the other end of the spring 11 is connected with the bottom of the friction plate 10. By mounting the friction plate 10 on the bottom of the first belt groove 3 and the second belt groove 4, the friction between the bottom of the first belt groove 3 and the second belt groove 4 and the belt is increased, so that the transmission efficiency is improved. The arc surface of the friction plate 10 slightly protrudes from the arc surface of the first belt groove 3 and the second belt groove 4. When the belt pulley operates and the bottom of the belt is in contact with the friction plate 10, the friction plate 10 moves downward, and at this time, the friction plate 10 has an upward pressure on the bottom of the belt due to the elastic force of the spring 11, so that the friction between the friction plate and the belt is enhanced.

[0032] In the embodiment, the arc surface of the friction plate 10 is adapted to the arc surface of the first pulley groove 3 and the second pulley groove 4, so as to avoid abrasion of the two ends of the friction plate 10 and the bottom of the belt during operation, and effectively prolong the service life of the belt.

[0033] In the embodiment, the sidewall of the first pulley groove 3 and the second pulley groove 4 is provided with anti-skid lines, so as to further enhance the friction force between the first pulley groove 3, the second pulley groove 4 and the belt, and improve the transmission efficiency.

[0034] The above is only the preferred embodiment of the present application, it should be pointed out that for those skilled in the art, without departing from the structure of the present application, under the premise of, can make a number of deformation and improvement, these will not affect the effect and the practicality of the patent of the present application implementation.

Claims

1. An engine pulley characterized by, The utility model provides a kind of pump type wheel body (1) and shaft type wheel body (2) including pump type wheel body (1), the one end of shaft type wheel body (2) is connected with pump type wheel body (1), the diameter of pump type wheel body (1) is less than the diameter of shaft type wheel body (2), the pump type wheel body (1) and shaft type wheel body (2) are integrally formed structure, and the central axis of pump type wheel body (1) coincides with the central axis of shaft type wheel body (2), the circumference of pump type wheel body (1) is equipped with multiple first pulley groove (3), the circumference of shaft type wheel body (2) is equipped with multiple second pulley groove (4), the one end of pump type wheel body (1) away from shaft type wheel body (2) is equipped with let slot (8), and let slot (8) is equipped with multiple engine coupling fixed hole (5) in, the one end of pump type wheel body (1) close to shaft type wheel body (2) is equipped with pre-setting groove (6), and pre-setting groove (6) is communicated with engine coupling fixed hole (5).

2. An engine pulley as claimed in claim 1, wherein The first pulley groove (3) has four, and the second pulley groove (4) has six.

3. An engine pulley as in claim 1 wherein, The circumference of pump type wheel body (1) and the circumference of shaft type wheel body (2) are equipped with first step surface (7) at the joint, and the joint of first step surface (7) and the circumference of pump type wheel body (1) and shaft type wheel body (2) is equipped with round corner.

4. An engine pulley as in claim 1 wherein, The diameter of let slot (8) gradually increases from the one end close to shaft type wheel body (2) to the one end away from shaft type wheel body (2).

5. An engine pulley as in claim 1 wherein, The wall thickness a of pump type wheel body (1) is greater than the wall thickness b of shaft type wheel body (2).

6. An engine pulley as in claim 1 wherein, The wall thickness c of the joint of pump type wheel body (1) and shaft type wheel body (2) is greater than the wall thickness b of shaft type wheel body (2).

7. An engine pulley as in claim 1 wherein, The end surface of pump type wheel body (1) and shaft type wheel body (2) is equipped with multiple lightening holes (14).

8. An engine pulley as in claim 1 wherein, The bottom of first pulley groove (3) and second pulley groove (4) is equipped with multiple mounting grooves (9), the top of mounting groove (9) is slidably installed with friction device, the friction device includes friction plate (10), spring (11) and two structure same guide rods (12), the cross section of friction plate (10) is arc-shaped, the top of two guide rods (12) is connected with the two ends of the bottom of friction plate (10) respectively, two guide rods (12) are slidably installed in mounting groove (9), one end of spring (11) is connected with the bottom of mounting groove (9), and the other end of spring (11) is connected with the bottom of friction plate (10).

9. An engine pulley as claimed in claim 8, wherein The arc surface of friction plate (10) is adapted to the arc surface of first pulley groove (3) and second pulley groove (4).

10. An engine pulley as in claim 1 wherein, The sidewall of first pulley groove (3) and second pulley groove (4) is equipped with anti-skid line.

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