Tapered sleeve synchronous belt pulley

Abstract

This application discloses a tapered sleeve type synchronous pulley, including a pulley body, a guide clamping cavity, and a tapered sleeve. The guide clamping cavity includes a guide groove and a mounting platform. The tapered sleeve includes a clamping shaft and a fixing platform. The clamping shaft has a clamping hole in its inner diameter and a first keyway recessed on its inner diameter. The guide groove has a second keyway communicating with the first keyway on its inner wall. A connecting shaft that can be inserted into the guide groove is provided on the side of the pulley body away from the tapered sleeve. A contraction groove is recessed on the side wall of the connecting shaft facing the tapered sleeve, penetrating the end of the connecting shaft facing the tapered sleeve and covering the first and second keyways. The same key is fitted into the first keyway, the second keyway, and the contraction groove. A threaded hole for installing a bolt set screw is recessed on the outer wall of the pulley body, communicating with the second keyway. This pulley effectively prevents the synchronous pulley from spinning freely or slipping by engaging with the key and multiple contraction grooves and locking with the bolt set screw in the threaded hole.

Description

Technical Field

[0001] This application relates to the field of timing pulley technology, and in particular to a tapered sleeve type timing pulley. Background Technology

[0002] Various standard components are required in automated equipment to achieve automated actions. Among them, the timing pulley is a commonly used accessory for automated transmission, which is driven by a timing belt to achieve synchronous transmission. However, existing timing pulleys have the risk of slippage between the pulley and the shaft during use, and their clamping force is insufficient. Utility Model Content

[0003] The purpose of this invention is to provide a tapered sleeve type synchronous belt pulley to overcome the shortcomings of the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] This application discloses a tapered sleeve type synchronous pulley, including a pulley body, a guide clamping cavity formed in the pulley body, and a tapered sleeve installed in the guide clamping cavity. The guide clamping cavity includes a mounting platform fixedly connected to the pulley body and a guide groove formed in the middle of the mounting platform. The tapered sleeve includes a clamping shaft and a fixed platform integrally formed with the clamping shaft. The inner diameter of the clamping shaft has a clamping hole coaxial with the guide groove. The characteristic feature is that: a first keyway penetrating both ends of the clamping shaft is recessed on the inner diameter of the clamping shaft; a second keyway communicating with the first keyway is provided on the inner wall of the guide groove; a connecting shaft that can be inserted into the guide groove is provided on the side of the pulley body away from the tapered sleeve; a shrinkage groove is recessed on the side wall of the connecting shaft facing the tapered sleeve; the shrinkage groove penetrates the end of the connecting shaft facing the tapered sleeve; the shrinkage groove covers the first keyway and the second keyway; the same key is fitted into the first keyway, the second keyway, and the shrinkage groove; and a threaded hole for installing a bolt set screw is recessed on the outer wall of the pulley body, communicating with the second keyway.

[0006] Preferably, in the above-mentioned tapered sleeve synchronous pulley, the mounting platform has a plurality of mounting holes, and the fixing platform has a plurality of countersunk holes corresponding to the mounting holes.

[0007] Preferably, in the above-mentioned tapered sleeve synchronous pulley, a plurality of transmission teeth are evenly distributed on the outer diameter of the pulley body, and the plurality of transmission teeth are integrally machined on the outer diameter of the pulley body.

[0008] Preferably, in the above-mentioned tapered sleeve synchronous pulley, the guide groove is provided as a tapered hole, and the outer diameter shape of the clamping shaft matches the guide groove.

[0009] Preferably, in the above-mentioned tapered sleeve synchronous pulley, the outer diameter of the clamping shaft is evenly distributed with multiple clamping grooves, and the clamping grooves are connected to the clamping hole.

[0010] Preferably, in the above-mentioned tapered sleeve synchronous pulley, the number of clamping grooves is 4, and the width of the grooves is 0.8mm to 1.2mm.

[0011] Preferably, in the above-mentioned tapered synchronous pulley, the fixed platform is recessed with an opening groove that communicates with the clamping hole and one of the clamping grooves.

[0012] Preferably, in the above-mentioned tapered synchronous pulley, the pulley body is integrally formed from aluminum alloy, stainless steel or steel.

[0013] Preferably, in the above-mentioned tapered sleeve synchronous pulley, the diameter of the clamping hole is 0.01mm to 0.05mm larger than the diameter of the guide groove.

[0014] Preferably, in the above-mentioned tapered synchronous pulley, a pair of annular retaining edges are symmetrically provided on the pulley body.

[0015] Compared with the prior art, the advantages of this utility model are:

[0016] By using a key and multiple shrinkage grooves, and locking it with the bolt set screw in the threaded hole, the connecting shaft can be effectively prevented from slipping during use, thus preventing rotation. In addition, an opening groove is added to the outer diameter of the fixed platform to make the clamping force reach more than 95%. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 The diagram shown is a structural schematic of the tapered sleeve synchronous belt pulley in a specific embodiment of this utility model;

[0019] Figure 2 The figure shown is a perspective view of the guide pressing cavity in a specific embodiment of this utility model;

[0020] Figure 3 The figure shown is a cross-sectional view of the guide pressing cavity in a specific embodiment of this utility model;

[0021] Figure 4 The figure shown is a three-dimensional representation of the conical sleeve in a specific embodiment of this utility model. Figure 1 ;

[0022] Figure 5 The figure shown is a three-dimensional representation of the conical sleeve in a specific embodiment of this utility model. Figure 2 . Detailed implementation mode

[0023] The following will combine the drawings in the embodiments of the present utility model to describe the technical solutions in the embodiments of the present utility model in detail. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Refer to Figures 1-5 As shown, the taper sleeve type synchronous pulley in this embodiment includes a wheel body 1, a guiding and pressing cavity 2 opened on the wheel body 1, and a taper sleeve 3 installed in the guiding and pressing cavity 2. The guiding and pressing cavity 2 includes an installation platform 201 fixedly connected to the wheel body 1 and a guiding groove 202 opened in the middle of the installation platform 201. The taper sleeve 3 includes a clamping shaft 301 and a fixed platform 302 integrally formed with the clamping shaft 301. A clamping hole 303 coaxial with the guiding groove 202 is opened in the inner diameter of the clamping shaft 301. A first keyway 304 penetrating through both ends is recessed on the inner diameter of the clamping shaft 301. A second keyway 203 communicating with the first keyway 304 is provided on the inner wall of the guiding groove 202. A connecting shaft 4 that can be inserted into the guiding groove 202 is provided on the side of the wheel body 1背离 the taper sleeve 3. A shrinkage groove 401 is recessed on the side wall of the end of the connecting shaft 4 facing the taper sleeve 3. The shrinkage groove 401 penetrates through the end of the connecting shaft 4 facing the taper sleeve 3. The shrinkage groove 401 covers the first keyway 304 and the second keyway 203. The first keyway 304, the second keyway 203 and the shrinkage groove 401 are cooperatively inserted with the same key 5. A threaded hole 101 for installing a bolt top screw and communicating with the second keyway 203 is recessed on the outer wall of the wheel body 1.

[0025] Furthermore, a plurality of installation holes 204 are opened on the installation platform 201, and a plurality of counterbore holes 305 corresponding to the installation holes 204 are opened on the fixed platform 302.

[0026] Furthermore, a plurality of transmission teeth 102 are evenly distributed on the outer diameter of the wheel body 1, and the plurality of transmission teeth 102 are integrally formed on the outer diameter of the wheel body 1.

[0027] Furthermore, the guiding groove 202 is arranged as a tapered hole, and the outer diameter shape of the clamping shaft 301 matches the guiding groove 202.

[0028] Furthermore, a plurality of pressing grooves 306 are evenly distributed on the outer diameter of the clamping shaft 301, and the pressing grooves 306 communicate with the clamping hole 303.

[0029] Furthermore, the number of the pressing grooves 306 is 4, and the width dimension thereof is 0.8 mm to 1.2 mm.

[0030] Furthermore, the fixed platform 302 is recessed and has an opening groove 307 that communicates with the clamping hole 303 and one of the clamping grooves 306.

[0031] Furthermore, wheel body 1 is integrally machined from aluminum alloy, stainless steel, or steel.

[0032] Furthermore, the diameter of the clamping hole 303 is 0.01mm to 0.05mm larger than the diameter of the guide groove 202.

[0033] Furthermore, a pair of annular flanges 103 are symmetrically provided on the wheel body 1.

[0034] In this technical solution, the key and multiple shrinkage grooves are used in conjunction, and the bolt set screw in the threaded hole is used for locking, which effectively prevents the connecting shaft from slipping during installation and prevents rotation. In addition, an opening groove is added to the outer diameter of the fixed platform so that the clamping force reaches more than 95%.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0036] The above are merely specific embodiments of this application. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A tapered sleeve type synchronous belt pulley, comprising a pulley body, a guide clamping cavity formed in the pulley body, and a tapered sleeve installed in the guide clamping cavity, wherein the guide clamping cavity includes a mounting platform fixedly connected to the pulley body and a guide groove formed in the middle of the mounting platform, and the tapered sleeve includes a clamping shaft and a fixing platform integrally formed with the clamping shaft, wherein the inner diameter of the clamping shaft has a clamping hole coaxial with the guide groove, characterized in that: The clamping shaft has a first keyway recessed on its inner diameter, extending through both ends. The guide groove has a second keyway on its inner wall, communicating with the first keyway. The wheel body has a connecting shaft on the side away from the tapered sleeve, into which the guide groove can be inserted. The connecting shaft has a shrinkage groove recessed on its side wall facing the tapered sleeve, extending through the end of the connecting shaft facing the tapered sleeve. The shrinkage groove covers the first and second keyways. The same key is fitted into the first keyway, the second keyway, and the shrinkage groove. The outer wall of the wheel body has a threaded hole recessed, communicating with the second keyway and used for installing bolt set screws.

2. The cone pulley of claim 1, wherein: The mounting platform has a number of mounting holes, and the fixing platform has a number of countersunk holes corresponding to the mounting holes.

3. The cone pulley of claim 1, wherein: The outer diameter of the wheel body is evenly distributed with several transmission teeth, which are integrally machined and formed on the outer diameter of the wheel body.

4. The cone pulley of claim 1, wherein: The guide groove is a tapered hole, and the outer diameter of the clamping shaft matches the guide groove.

5. The cone pulley of claim 1, wherein: The clamping shaft has multiple clamping grooves evenly distributed on its outer diameter, and the clamping grooves are connected to the clamping holes.

6. A cone pulley as claimed in claim 5, characterized in that: The number of clamping grooves is 4, and their width is 0.8mm to 1.2mm.

7. The cone pulley of claim 5, wherein: The fixed platform is recessed and has an opening groove that communicates with the clamping hole and one of the clamping slots.

8. The cone pulley of claim 1, wherein: The wheel body is integrally machined from aluminum alloy, stainless steel, or steel.

9. A tapered sleeve type synchronous pulley according to claim 1, characterized in that: The diameter of the clamping hole is 0.01 mm to 0.05 mm larger than the diameter of the guide groove.

10. The cone pulley of claim 1, wherein: The wheel body is symmetrically provided with a pair of annular flanges.

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