Belt pulley with adjustable groove width

Abstract

The utility model provides a belt pulley with an adjustable groove width. The belt pulley comprises a cylinder, a fixed baffle, a movable baffle and a separation ring. The separation ring comprises a ring body, a sealing plate, a locking mechanism and a second bolt, a guide column of the locking mechanism moves to the position with the needed width along a longitudinal guide groove in the outer side wall of the cylinder firstly, then the separation ring is rotated to enable the guide column to move along a transverse guide groove, and when the guide column moves to the end of the transverse guide groove, the guide column is clamped in a fixing hole; and then fixing nuts sequentially penetrate through the fixing holes and the second through holes to be in threaded connection with the threaded holes in the fixing blocks so as to fix the separation rings. The positions and the number of the separation rings can be adjusted according to the width requirement of the belt, and the applicability is better.

Description

Technical Field

[0001] The utility model relates to the field of belt pulleys, in particular to a belt pulley with adjustable groove width. Background Art

[0002] A belt pulley belongs to the category of disc hubs and is mainly used in occasions for transmitting power over a long distance, such as the power output of small diesel engines, agricultural vehicles, tractors, automobiles, mining machinery, machining equipment, textile machinery, packaging machinery, lathes, forging machines, the power transmission of some small-horsepower motorcycles, the power transmission of agricultural machinery, air compressors, speed reducers, reduction gears, generators, cotton ginning machines, etc.

[0003] The existing belt pulleys are generally produced by integral casting. Each type of belt pulley can only correspond to belts of corresponding sizes, and the number of belt grooves is also fixed. Therefore, the versatility of the existing belt pulleys is poor, which greatly limits the applicable occasions of the belt pulleys. Once the replaced belt has different sizes or the number of belts is changed, the entire belt pulley has to be replaced. Content of the Utility Model

[0004] In view of this, the utility model aims to provide a belt pulley with adjustable groove width to solve the above problems.

[0005] To achieve the above object, the technical solution of the utility model is realized as follows:

[0006] A belt pulley with adjustable groove width includes a cylindrical barrel, a fixed baffle, a movable baffle and a spacer ring; the two ends of the cylindrical barrel are respectively provided with a fixed baffle and a movable baffle. The fixed baffle is integrally connected with the cylindrical barrel, and the movable baffle is connected with the cylindrical barrel through a first bolt. The centers of the fixed baffle and the movable baffle are both provided with shaft holes for the shaft to pass through; several spacer rings are provided. The spacer rings are sleeved on the cylindrical barrel and fixed through fixing nuts;

[0007] The spacer ring includes a ring body, a sealing plate, a locking mechanism and a second bolt; two grooves are symmetrically arranged on the front side of the ring body, and the locking mechanism is arranged in the grooves. The ring body and the sealing plate are connected through the second bolt; the locking mechanism includes a guide post, a fixed block and a spring. The fixed block is fixed in the groove. The guide post is provided with a first through hole, and the guide post is sleeved on the fixed block through the first through hole and can move along the radial direction of the ring body and extend out of the groove; one end of the guide post is located in the groove and is connected with the side wall of the groove through a spring, and the other end of the guide post is located outside the groove. The other end of the guide post is round-headed and provided with a second through hole at the end, and the second through hole is communicated with the first through hole. A threaded hole is provided on the fixed block opposite to the second through hole;

[0008] A guiding groove is provided on the outer side wall of the cylindrical barrel, and the round head of the guiding column can move along the guiding groove; the guiding groove includes a longitudinal guiding groove extending along the axial direction of the cylindrical barrel and a plurality of transverse guiding grooves vertically intersecting with the longitudinal guiding groove. Fixed holes for clamping the guiding column are provided at the ends of the transverse guiding grooves. The fixing nut sequentially passes through the fixed hole, the second through hole and is screwed with the threaded hole on the fixing block to fix the separation ring.

[0009] Furthermore, the fixed hole includes a threaded section and a smooth section arranged sequentially in the radial direction of the cylindrical barrel. The diameter of the threaded section is smaller than that of the smooth section. The fixing nut is screwed with the threaded section, and the diameter of the smooth section is greater than or equal to the diameter of the guiding column.

[0010] Furthermore, a plurality of inserting columns are provided on the side of the sealing plate facing the ring body, and inserting slots for inserting the inserting columns are provided on the ring body; an installation groove is provided in the inserting column, and a threaded groove is provided at the bottom of the inserting slot. The second bolt passes through the installation groove and is screwed with the threaded groove.

[0011] Furthermore, a plurality of counterbored holes are provided on the movable baffle, and fixed sleeves are provided on the inner side wall of the cylindrical barrel opposite to the counterbored holes. The first bolt passes through the counterbored hole and is screwed with the fixed sleeve.

[0012] Furthermore, the transverse guiding grooves are evenly distributed on both sides of the longitudinal guiding groove in the length extension direction, and the transverse guiding grooves on both sides are staggeredly distributed.

[0013] Compared with the prior art, the pulley with adjustable groove width of the present invention has the following advantages:

[0014] The pulley with adjustable groove width of the present invention includes a cylindrical barrel, a fixed baffle, a movable baffle and a separation ring; the separation ring includes a ring body, a sealing plate, a locking mechanism and a second bolt. The guiding column of the locking mechanism first moves along the longitudinal guiding groove on the outer side wall of the cylindrical barrel to the position of the required width, and then the separation ring is rotated to make the guiding column move along the transverse guiding groove. When moving to the end of the transverse guiding groove, the guiding column is clamped in the fixed hole, and then the fixing nut sequentially passes through the fixed hole, the second through hole and is screwed with the threaded hole on the fixing block to fix the separation ring. The position and number of the separation rings can be adjusted according to the needs of the belt width, and the applicability is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0016] Figure 1 is a schematic structural diagram of the pulley with adjustable groove width according to the embodiment of the present invention;

[0017] Figure 2 is a side view of the pulley with adjustable groove width according to the embodiment of the present invention;

[0018] Figure 3 The structural schematic diagram of the cylindrical barrel described in the embodiment of the present utility model;

[0019] Figure 4 The structural schematic diagram of the partition ring described in the embodiment of the present utility model;

[0020] Figure 5 The front view of the partition ring described in the embodiment of the present utility model;

[0021] Figure 6 The partial enlarged view at position A of the partition ring described in the embodiment of the present utility model;

[0022] Figure 7 The structural schematic diagram of the locking mechanism described in the embodiment of the present utility model;

[0023] Figure 8 The structural schematic diagram of the sealing plate described in the embodiment of the present utility model.

[0024] Explanation of reference numerals:

[0025] 1, cylindrical barrel; 11, fixed sleeve; 12, guide groove; 121, longitudinal guide groove; 122, transverse guide groove; 13, fixing hole; 131, smooth section; 132, threaded section; 2, fixed baffle; 3, movable baffle; 31, counterbore; 32, first bolt; 4, partition ring; 41, ring body; 411, groove; 412, slot; 413, threaded groove; 42, sealing plate; 421, insertion post; 422, installation groove; 43, locking mechanism; 431, guide post; 4311, first through hole; 4312, second through hole; 432, fixed block; 4321, threaded hole; 433, spring; 44, second bolt; 5, fixing nut. Specific embodiments

[0026] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments may be combined with each other.

[0027] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0028] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] The present utility model will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0030] As Figure 1-8 shown, a pulley with adjustable groove width includes a cylindrical barrel 1, a fixed baffle 2, a movable baffle 3 and a spacer ring 4; fixed baffles 2 and movable baffles 3 are respectively arranged at both ends of the cylindrical barrel 1. The fixed baffle 2 is integrally connected with the cylindrical barrel 1, and the movable baffle 3 is connected to the cylindrical barrel 1 through a first bolt 32. Axial holes for the shaft to pass through are provided at the centers of both the fixed baffle 2 and the movable baffle 3; A number of spacer rings 4 are provided. The spacer rings 4 are sleeved on the cylindrical barrel 1 and fixed by fixing nuts 5;

[0031] The spacer ring 4 includes a ring body 41, a sealing plate 42, a locking mechanism 43 and a second bolt 44; two grooves 411 are symmetrically arranged on the front side of the ring body 41, and the locking mechanism 43 is arranged in the grooves 411. The ring body 41 and the sealing plate 42 are connected by the second bolt 44; the locking mechanism 43 includes a guide post 431, a fixed block 432 and a spring 433. The fixed block 432 is fixed in the groove 411. A first through hole 4311 is arranged on the guide post 431. The guide post 431 is sleeved on the fixed block 432 through the first through hole 4311 and can move along the radial direction of the ring body 41 and extend out of the groove 411; one end of the guide post 431 is located in the groove 411 and is connected with the side wall of the groove 411 through the spring 433. The other end of the guide post 431 is located outside the groove 411. The other end of the guide post 431 is a round head and a second through hole 4312 is arranged at the end. The second through hole 4312 is communicated with the first through hole 4311. A threaded hole 4321 is arranged on the fixed block 432 opposite to the second through hole 4312;

[0032] A guide groove 12 is arranged on the outer side wall of the cylindrical barrel 1, and the round head of the guide post 431 can move along the guide groove 12; the guide groove 12 includes a longitudinal guide groove 121 extending along the axial direction of the cylindrical barrel 1 and several transverse guide grooves 122 vertically intersecting with the longitudinal guide groove 121. A fixing hole 13 for clamping the guide post 431 is arranged at the end of the transverse guide groove 122. The fixing nut 5 sequentially passes through the fixing hole 13, the second through hole 4312 and is screwed with the threaded hole 4321 on the fixed block 432 to fix the spacer ring 4.

[0033] The pulley includes a cylindrical barrel, a fixed baffle plate, a movable baffle plate and a spacer ring; the position and number of the spacer rings can be adjusted according to the needs of the belt width, and the applicability is better. The spacer ring includes a ring body, a sealing plate, a locking mechanism and a second bolt. The guide post of the locking mechanism first moves along the longitudinal guide groove on the outer side wall of the cylindrical barrel to the position of the required width, and then the spacer ring is rotated to make the guide post move along the corresponding transverse guide groove. When moving to the end of the transverse guide groove, the guide post is clamped in the fixing hole, and then the fixing nut sequentially passes through the fixing hole, the second through hole and is screwed with the threaded hole on the fixed block to fix the spacer ring.

[0034] Exemplarily, as Figure 6 shown, the fixing hole 13 includes a threaded section 132 and a smooth section 131 arranged in sequence along the radial direction of the cylindrical barrel 1. The diameter of the threaded section 132 is smaller than that of the smooth section 131. The fixing nut 5 is screwed with the threaded section 132. The diameter of the smooth section 131 is greater than or equal to the diameter of the guide post 431, and the guide post is clamped in the smooth section.

[0035] Exemplarily, as Figure 4 and 8As shown, on the side of the sealing plate 42 facing the ring body 41, there are a number of insertion posts 421, and on the ring body 41, there are slots 412 for inserting the insertion posts 421; an installation groove 422 is provided inside the insertion post 421, and a threaded groove 413 is provided at the bottom of the slot 412. The second bolt 44 passes through the installation groove 422 and is screwed into the threaded groove 413. During installation, the insertion post is inserted into the corresponding slot, and then the second bolt is inserted into the installation groove and the threaded groove, and the head of the second bolt is hidden inside the installation groove.

[0036] Exemplarily, as Figure 1 shown, a number of counterbored holes 31 are provided on the movable baffle 3, and on the inner side wall of the cylindrical barrel 1, opposite the counterbored holes 31, there are fixed sleeves 11. The first bolt 32 passes through the counterbored holes 31 and is screwed into the fixed sleeves 11.

[0037] Exemplarily, the transverse guide grooves 122 are evenly distributed on both sides of the longitudinal guide groove 121 in the length extension direction, and the transverse guide grooves 122 on both sides are staggered.

[0038] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A pulley with adjustable groove width, characterized in that: It includes a cylindrical barrel, a fixed baffle, a movable baffle and a separating ring; a fixed baffle and a movable baffle are respectively provided at both ends of the cylindrical barrel, the fixed baffle is integrally connected with the cylindrical barrel, the movable baffle is connected with the cylindrical barrel through a first bolt, and shaft holes for a shaft to pass through are provided at the centers of the fixed baffle and the movable baffle; several separating rings are provided, the separating rings are sleeved on the cylindrical barrel and fixed through fixing nuts; The separating ring includes a ring body, a sealing plate, a locking mechanism and a second bolt; two grooves are symmetrically provided on the front side of the ring body, a locking mechanism is provided in the grooves, and the ring body and the sealing plate are connected through a second bolt; the locking mechanism includes a guide post, a fixed block and a spring, the fixed block is fixed in the groove, a first through hole is provided on the guide post, the guide post is sleeved on the fixed block through the first through hole and can move along the radial direction of the ring body and extend out of the groove; one end of the guide post is located in the groove and is connected with the side wall of the groove through a spring, the other end of the guide post is located outside the groove, the other end of the guide post is a round head and a second through hole is provided at the end, the second through hole is communicated with the first through hole, and a threaded hole opposite to the second through hole is provided on the fixed block; A guide groove is provided on the outer side wall of the cylindrical barrel, and the round head of the guide post can move along the guide groove; the guide groove includes a longitudinal guide groove extending along the axial direction of the cylindrical barrel and several transverse guide grooves vertically intersecting with the longitudinal guide groove, and fixing holes for clamping the guide post are provided at the ends of the transverse guide grooves, and the fixing nut sequentially passes through the fixing hole, the second through hole and is screwed with the threaded hole on the fixed block to fix the separating ring.

2. The pulley with adjustable groove width according to claim 1, wherein: The fixing hole includes a threaded section and a smooth section arranged in sequence along the radial direction of the cylindrical barrel, the diameter of the threaded section is smaller than that of the smooth section, the fixing nut is screwed with the threaded section, and the diameter of the smooth section is greater than or equal to the diameter of the guide post.

3. The pulley with adjustable groove width according to claim 1, characterized in that: Several insertion posts are provided on the side of the sealing plate facing the ring body, and slots for inserting the insertion posts are provided on the ring body; an installation groove is provided in the insertion post, a threaded groove is provided at the bottom of the slot, and the second bolt passes through the installation groove and is screwed with the threaded groove.

4. The pulley with adjustable groove width according to claim 1, wherein: Several counterbores are provided on the movable baffle, and fixing sleeves are provided on the inner side wall of the cylindrical barrel opposite to the counterbores, and the first bolt passes through the counterbore and is screwed with the fixing sleeve.

5. The pulley with adjustable groove width according to claim 1, wherein: The transverse guide grooves are evenly distributed on both sides of the length extension direction of the longitudinal guide groove, and the transverse guide grooves on both sides are staggered.

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