Crankshaft pulley assembly capable of preventing belt from loosening

Abstract

The utility model relates to the technical field of crankshaft belt pulleys, in particular to a crankshaft belt pulley assembly capable of preventing a belt from loosening, which comprises a hub, a plurality of belt grooves used for being connected with the belt are arranged on the outer surface of the hub, and a belt tensioning self-adjusting mechanism is arranged in an inner cavity of each belt groove. The belt tensioning self-adjusting mechanism comprises a flexible ring which is fixedly arranged on the inner wall of the belt groove in a sleeving mode and matched with the belt groove, and an inner cavity of the flexible ring is elastically and slidably connected with at least three arc-shaped clamping plates used for supporting the inner side of the belt. The inner side of the belt can be conveniently supported through the arc-shaped clamping plates which are in elastic sliding connection with the inner cavity of the flexible ring, the belt can be loosened after working for a period of time, and at the moment, the arc-shaped clamping plates can automatically expand outwards, so that the belt can be conveniently and adaptively adjusted according to the actual state of the belt, and the safety of the belt is improved. And a tensioning device does not need to be additionally arranged near the belt pulley, so that the equipment can adapt to vehicle types with narrow mounting spaces and is convenient for workers to use.

Description

Technical Field

[0001] The utility model relates to the technical field of crankshaft pulleys, in particular to a crankshaft pulley assembly for preventing belt loosening. Background Art

[0002] Most of the existing automobile engines transmit power by means of a belt and a crankshaft pulley. The engine drive shaft needs to cooperate closely with the belt in the process of driving the crankshaft pulley.

[0003] The utility model patent with the publication (announcement) number CN214788912U and the name is a crankshaft pulley assembly, which includes a wheel hub, a rubber ring and an inertia ring. The inertia ring is coaxially fixed on the outer periphery of the wheel hub, the rubber ring is fixed between the wheel hub and the inertia ring, the wheel hub has a cavity, and an arc-shaped eccentric block is fixed on the side wall of the cavity. The curvature of the arc-shaped eccentric block is equal to the curvature of the wheel hub; the advantage is that it can make the three-cylinder engine run smoothly, is not easy to pull the cylinder, reduces the overall occupied space, and can reduce production costs.

[0004] The patented device can make a three-cylinder engine run smoothly, is not prone to cylinder seizure, reduces overall space occupation, and can reduce production costs; in the actual use of the device, since the material used to make the belt is not a completely elastic body, the belt will become loose after working for a period of time. Although a tensioning device can be set near the pulley to prevent it from loosening, the addition of a tensioning device requires increasing the overall installation space of the equipment, which makes it inconvenient for the equipment to adapt to vehicles with narrow installation spaces, thereby causing certain inconveniences to the users. Utility Model Content

[0005] The utility model aims to provide a crankshaft pulley assembly which can prevent belt slackening.

[0006] The technical problem solved by the utility model is that the existing crankshaft pulley assembly needs to be equipped with a tensioning device to prevent the belt from loosening. The addition of the tensioning device will increase the overall installation space of the equipment, making it inconvenient for the equipment to adapt to vehicles with narrow installation spaces.

[0007] The utility model can be implemented through the following technical solutions: a crankshaft pulley assembly for preventing belt loosening, including a wheel hub, a plurality of belt grooves for connecting belts are opened on the outer surface of the wheel hub, and a belt tensioning self-adjusting mechanism is provided in the inner cavity of the belt groove. By arranging the belt tensioning self-adjusting mechanism in the inner cavity of the belt groove instead of the existing tensioning device, it is not only convenient to reduce the overall occupied space of the equipment, but also convenient to reduce the vehicle type that the equipment adapts to the narrow installation space; the belt tensioning self-adjusting mechanism includes a flexible ring fixedly sleeved on the inner wall of the belt groove and matched therewith, the flexible ring is a soft material and is not limited to one kind. Through the setting of the soft material, it is convenient to adapt to the belt groove in the inner cavity of the wheel hub; the inner cavity of the flexible ring is elastically slidably connected with at least three arc-shaped clamping plates for supporting the inner side of the belt, the inner cavity of the arc-shaped clamping plate is rollingly connected with a plurality of coated balls abutting the inner side of the belt, the arc-shaped clamping plate is used to initially support the inner side of the belt, and the coated balls rollingly connected on the arc-shaped clamping plate are used to further support the belt.

[0008] A further technical improvement of the utility model is that the inner cavity of the flexible ring is provided with a lubricating oil supply assembly for lubricating the belt, the lubricating oil supply assembly includes a containing sponge fixedly connected to the inner cavity of the flexible ring, the containing sponge is in contact with the outer wall of the coating ball, the inner cavity of the containing sponge is filled with lubricating oil, and the coating ball rolls when the belt is running. The outer surface of the coating ball is intermittently in contact with the containing sponge through the rolling of the coating ball, thereby facilitating the transfer of the lubricating oil filled in the inner cavity of the containing sponge to the inner side of the belt through the coating ball.

[0009] A further technical improvement of the utility model is that an anti-overflow plate is fixedly connected to the inner cavity of the flexible ring and the side away from the containing sponge to prevent excessive overflow of the lubricating oil in the inner cavity of the containing sponge. The anti-overflow plate is set to prevent excessive overflow of the lubricating oil in the inner cavity of the containing sponge when the coating ball contacts the containing sponge.

[0010] A further technical improvement of the utility model is that an external connecting tube for replenishing the lubricating oil in the inner cavity of the sponge is fixedly installed in the inner cavity of the arc-shaped clamping plate, the external connecting tube is connected to the inner cavity of the sponge, one end of the external connecting tube is connected to the arc-shaped clamping plate and the flexible ring in sequence and extends to the outside of the flexible ring, and the external connecting tube is used to facilitate the user to replenish the lubricating oil in the inner cavity of the sponge in time.

[0011] A further technical improvement of the utility model is that the flexible ring is connected to the wheel hub through an installation mechanism, the installation mechanism includes a first arc-shaped hard plate and a second arc-shaped hard plate fixed at both ends of the flexible ring, a clamping block is fixedly connected to the side opposite to the second arc-shaped hard plate, the inner cavity of the second arc-shaped hard plate is provided with a clamping groove matching the clamping block, the clamping block on the first arc-shaped hard plate is fixed to the second arc-shaped hard plate by a positioning pin, and the detachable installation of the flexible ring and the wheel hub facilitates the user to regularly maintain the flexible ring.

[0012] A further technical improvement of the utility model is that one side of the clamping block close to the second arc-shaped hard plate is arc-shaped, so that the clamping block can enter the inner cavity of the second arc-shaped hard plate conveniently.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The utility model uses an arc-shaped clamping plate elastically connected by sliding in the inner cavity of the flexible ring to support the inner side of the belt. After the belt has worked for a period of time, the belt will become loose. At this time, the multiple arc-shaped clamping plates will automatically expand outward, so as to facilitate the adaptive adjustment of the belt according to its actual state. There is no need to add a tensioning device near the pulley, so that the equipment can adapt to the vehicle model with a small installation space, which is convenient for the staff to use.

[0015] 2. The utility model supports the inner side of the belt by arranging a coating ball rollingly connected to the arc-shaped clamping plate on the flexible ring, which not only facilitates the support of the inner side of the belt, but also can lubricate the inner side of the belt during the operation of the belt. The coating ball rollingly connected to the arc-shaped clamping plate rolls due to the operation of the belt, and the side of the coating ball in contact with the sponge is in contact with the inner side of the belt due to the rolling of the coating ball, thereby facilitating the transfer of the lubricating oil stored in the inner cavity of the sponge to the inner side of the belt, and facilitating the lubrication of the inner side of the belt. Since the coating ball is constantly rolling during the operation of the belt, the inner side of the belt can be evenly lubricated through the continuous rolling of the coating ball, thereby facilitating the extension of the service life of the belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a partial structural schematic diagram of the wheel hub of the utility model;

[0019] Figure 3 For this utility model Figure 2 Schematic diagram of the internal structure;

[0020] Figure 4 For this utility model Figure 3 A partial enlarged view of the middle A;

[0021] Figure 5 For this utility model Figure 3 A partial enlarged view of point B in the middle.

[0022] In the figure:

[0023] 1. Wheel hub;

[0024] 2. Belt groove;

[0025] 3. Flexible ring; 31. First arc-shaped hard plate; 32. Second arc-shaped hard plate; 33. Block; 34. Slot; 35. Positioning pin;

[0026] 4. Arc-shaped clamping plate; 41. Receiving groove; 42. Extrusion spring; 43. Connecting nozzle; 44. Hemispherical groove; 45. Receiving sponge; 46. Coating ball; 47. Anti-overflow plate; 48. External connecting pipe. DETAILED DESCRIPTION

[0027] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0028] See also Figure 1-5 As shown, this embodiment provides a technical solution, a crankshaft pulley assembly for preventing belt loosening, comprising a hub 1, a plurality of belt grooves 2 for connecting belts are provided on the outer surface of the hub 1, a flexible ring 3 matching with the belt groove 2 is detachably installed in the inner cavity of the belt groove 2, a first arc-shaped hard plate 31 and a second arc-shaped hard plate 32 are fixedly connected at both ends of the flexible ring 3, a clamping block 33 is fixedly installed on the side opposite to the first arc-shaped hard plate 31 and the second arc-shaped hard plate 32, a clamping groove 34 matching with the clamping block 33 is provided in the inner cavity of the second arc-shaped hard plate 32, a side of the clamping block 33 close to the clamping groove 34 is arc-shaped, and such a setting facilitates the clamping block 33 to enter the inner cavity of the corresponding clamping groove 34;

[0029] The clamping block 33 on the first arc-shaped hard plate 31 and the second arc-shaped hard plate 32 are fixed by positioning pins 35 .

[0030] The inner cavity of the flexible ring 3 is provided with at least three receiving grooves 41, and an extrusion spring 42 is fixedly installed on the inner wall of the receiving groove 41. An arc-shaped clamping plate 4 is fixed on the side of the extrusion spring 42 away from the inner wall of the receiving groove 41, and the arc-shaped clamping plate 4 is slidably connected to the inner cavity of the receiving groove 41. A plurality of evenly distributed hemispherical grooves 44 are provided on the end of the arc-shaped clamping plate 4 away from the extrusion spring 42, and a coating ball 46 that contacts the inner side of the belt is rollingly connected to the inner cavity of the hemispherical groove 44, and a receiving sponge 45 matching the coating ball 46 is fixedly installed on the inner wall of the hemispherical groove 44, and an anti-overflow plate 47 is fixedly installed on the inner wall of the hemispherical groove 44 and away from the side of the receiving sponge 45, and the inner cavity of the anti-overflow plate 47 is provided with a rolling groove for the coating ball 46 to roll.

[0031] The inner cavity of the arc-shaped clamping plate 4 is fixedly installed with an external connecting tube 48 for replenishing the lubricating oil in the inner cavity of the sponge 45. The external connecting tube 48 is provided with a connecting nozzle 43 connected with the inner cavity of the sponge 45. One end of the external connecting tube 48 passes through the arc-shaped clamping plate 4 and the flexible ring 3 in sequence and extends to the outside of the flexible ring 3. A sealing plug is provided at the end of the external connecting tube 48 extending to the outside of the flexible ring 3.

[0032] When the utility model is in use, the flexible ring 3 is installed in the belt groove 2 of the corresponding wheel hub 1. The flexible ring 3 can be bent so that the flexible ring 3 can fit the belt groove 2 of the wheel hub 1, and the block 33 at the first arc-shaped hard plate 31 on the flexible ring 3 enters the slot 34 of the inner cavity of the second arc-shaped hard plate 32. After the two are engaged, the first arc-shaped hard plate 31 and the second arc-shaped hard plate 32 can be further fixed by the positioning pin 35;

[0033] After the flexible ring 3 is installed, the arc-shaped clamping plate 4 elastically slidably connected to the inner cavity of the flexible ring 3 is convenient for supporting the inner side of the belt. In the process of supporting the inner side of the belt, by arranging a coating ball 46 rollingly connected to the arc-shaped clamping plate 4, it is not only convenient to support the inner side of the belt, but also can lubricate the inner side of the belt during the operation of the belt. The coating ball 46 rollingly connected to the arc-shaped clamping plate 4 rolls due to the operation of the belt, and the coating ball 46 rolls so that the side of the coating ball 46 in contact with the sponge 45 contacts the inner side of the belt, thereby facilitating the transfer of the lubricating oil stored in the inner cavity of the sponge 45 to the inner side of the belt, and facilitating the lubrication of the inner side of the belt.

[0034] At the same time, since the coating ball 46 is constantly rolling during the operation of the belt, the inner side of the belt can be evenly lubricated by the continuous rolling of the coating ball 46, thereby extending the service life of the belt.

[0035] The belt will become loose after working for a period of time. At this time, the multiple arc-shaped clamping plates 4 will automatically expand outward, so as to facilitate the adaptive adjustment of the belt according to its actual state, without adding a tensioning device near the pulley, thereby making the equipment easy to install and convenient for staff to use.

[0036] The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A crankshaft pulley assembly for preventing belt loosening, comprising a hub (1), wherein a plurality of belt grooves (2) for connecting belts are formed on the outer surface of the hub (1), wherein: The inner cavity of the belt groove (2) is provided with a belt tensioning self-adjusting mechanism, and the belt tensioning self-adjusting mechanism comprises a flexible ring (3) fixedly sleeved on the inner wall of the belt groove (2) and matched therewith, the inner cavity of the flexible ring (3) is elastically and slidably connected with at least three arc-shaped clamping plates (4) for supporting the inner side of the belt, and the inner cavity of the arc-shaped clamping plates (4) is rollingly connected with a plurality of coated balls (46) abutting against the inner side of the belt.

2. A crankshaft pulley assembly for preventing belt slack according to claim 1, characterized in that: The inner cavity of the flexible ring (3) is provided with a lubricating oil supply assembly for lubricating the belt, and the lubricating oil supply assembly comprises a containing sponge (45) fixedly connected to the inner cavity of the flexible ring (3), the containing sponge (45) is in contact with the outer wall of the coating ball (46), and the inner cavity of the containing sponge (45) is filled with lubricating oil.

3. A crankshaft pulley assembly for preventing belt slack according to claim 2, characterized in that: An anti-overflow plate (47) is fixedly connected to the inner cavity of the flexible ring (3) and on a side away from the sponge (45) for preventing excessive overflow of lubricating oil from the inner cavity of the sponge (45).

4. A crankshaft pulley assembly for preventing belt slack according to claim 2, characterized in that: An external connecting tube (48) for replenishing lubricating oil in the inner cavity of the sponge (45) is fixedly installed in the inner cavity of the arc-shaped clamping plate (4), and the external connecting tube (48) is communicated with the inner cavity of the sponge (45), and one end of the external connecting tube (48) is connected to the arc-shaped clamping plate (4) and the flexible ring (3) in sequence and extends to the outside of the flexible ring (3).

5. The crankshaft pulley assembly for preventing belt slack according to claim 1, characterized in that: The flexible ring (3) is connected to the wheel hub (1) via a mounting mechanism, and the mounting mechanism comprises a first arc-shaped hard plate (31) and a second arc-shaped hard plate (32) fixed at two ends of the flexible ring (3); a clamping block (33) is fixedly connected to one side of the first arc-shaped hard plate (31) and the second arc-shaped hard plate (32) opposite to each other; a clamping groove (34) matching the clamping block (33) is provided in the inner cavity of the second arc-shaped hard plate (32); and the clamping block (33) on the first arc-shaped hard plate (31) and the second arc-shaped hard plate (32) are fixed via a positioning pin (35).

6. A crankshaft pulley assembly for preventing belt slack according to claim 5, characterized in that: The side of the clamping block (33) close to the second arc-shaped hard plate (32) is arc-shaped.

Images