High-stability synchronous pulley

Abstract

The high-stability synchronous pulley comprises a rotating wheel assembly, a first bearing and a second bearing, the rotating wheel assembly comprises a tail sleeve, a core sleeve and a gear sleeve, an inserting groove is formed in the bottom of the tail sleeve, a connecting part of the gear sleeve is inserted into the inserting groove, a mounting part is arranged on the core sleeve and inserted into the gear sleeve, an inserting hole is formed in the middle of the core sleeve, and the first bearing and the second bearing are arranged in the inserting hole. The first bearing and the second bearing are respectively assembled on upper and lower end faces of the jack. According to the synchronous pulley with the high stability, the rotating wheel assembly is formed by inserting and matching the tail sleeve and the core sleeve with the gear sleeve, the stability of the synchronous pulley is higher, the phenomenon that the gear sleeve falls off or the rotating wheel assembly falls apart due to vibration in the using process is avoided, and the rotating wheel assembly can not fall off due to the fact that the check ring on the end face of the bearing is matched with the positioning groove in the end face of the rotating wheel. Therefore, the bearings in the insertion holes of the rotating wheel do not shake mutually due to gaps.

Description

Technical Field

[0001] The utility model relates to the technical field of synchronous pulleys, in particular to a synchronous pulley with high stability. Background Art

[0002] The synchronous pulley transmission is composed of a closed annular rubber belt with equally spaced teeth on the inner circumference and a corresponding pulley. When in motion, the belt teeth mesh with the tooth grooves of the pulley to transmit motion and power. It is a meshing transmission, and thus has various characteristics of gear transmission, chain transmission and flat belt transmission. The existing synchronous pulley bearings and retaining rings are directly fitted to achieve rotation transmission, but the precision required by the bearings is too high. When the gap with the retaining ring is large, the assembled synchronous pulley will shake when rotating. When the gap is too small, it will be difficult to assemble. The shaking problem is more serious after the synchronous pulley diameter is enlarged, which will affect the use of the equipment turntable, etc. In addition, the existing synchronous pulleys limit the tooth sleeve in the middle by fitting retaining rings at both ends of the wheel. The tooth sleeve vibrates under the high-speed drive of the conveyor belt, and it is easy to deviate and bounce the retaining rings on both sides, causing the synchronous pulley to fall apart as a whole, thus affecting its use. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] The problem to be solved by the utility model is to provide a highly stable synchronous belt wheel, so as to overcome the defects in the prior art that the retaining ring of the synchronous belt wheel is easy to fall off and the bearing runs unsteadily when the synchronous belt wheel is used.

[0005] (II) Technical solution

[0006] In order to solve the technical problem, the utility model provides a high-stability synchronous pulley, including a rotating wheel assembly, a first bearing and a second bearing, the rotating wheel assembly including a tail sleeve, a core sleeve and a gear sleeve, the bottom of the tail sleeve is provided with a slot, the connecting part of the gear sleeve is inserted in the slot, the core sleeve is provided with a mounting portion, the mounting portion is inserted in the gear sleeve, the tail sleeve and the gear sleeve, the core sleeve and the gear sleeve are coaxially inserted and matched, the connection is stable and the concentric setting can be ensured, the middle of the core sleeve is provided with a socket, the first bearing and the second bearing are respectively assembled on the upper and lower end faces of the socket; the upper end face of the tail sleeve is provided with a first positioning groove, the lower end face of the core sleeve is provided with a second positioning groove, the end face of the first bearing is provided with a first retaining ring, the end face of the second bearing is provided with a second retaining ring, the first retaining ring is placed in the first positioning groove, and the second retaining ring is placed in the second positioning groove, so that the swing of the bearing in the socket due to the gap is reduced or even eliminated, and the problem of oscillation and shaking of the synchronous pulley is solved.

[0007] In some embodiments, the upper end surface of the tail sleeve is provided with a truncated cone, and the truncated cone cooperates with the upper end surface of the core sleeve to form the first positioning groove, and the first positioning groove, the truncated cone and the insertion hole are arranged cocentrically.

[0008] In some embodiments, the bottom of the socket is concave to form the second positioning groove, the first positioning groove and the second positioning groove are both cylindrical grooves, the surface of the first positioning groove is provided with a first abutment surface, the first abutment surface is the upper end surface of the core sleeve, and the first retaining ring is in contact with the first abutment surface; the surface of the second positioning groove is provided with a second abutment surface, the second retaining ring is in contact with the second abutment surface, and the outer side of the gear sleeve is provided with a tooth portion.

[0009] (III) Beneficial effects

[0010] The utility model provides a highly stable synchronous pulley, in which a rotating wheel assembly is composed of a tail sleeve and a core sleeve which are respectively inserted and matched with a gear sleeve, and has higher stability. The gear sleeve will not fall off or the rotating wheel assembly will not fall apart due to vibration during use. The retaining ring on the end face of the bearing cooperates with the positioning groove on the end face of the rotating wheel, so that the bearings will not shake and vibrate against each other inside the insertion hole of the rotating wheel due to the existence of a gap, thereby avoiding the phenomenon of unstable transmission on the surface of the synchronous pulley, and reducing the machining accuracy requirements of the bearing and the internal insertion hole of the rotating wheel. There will be no problems such as jamming during assembly, thereby improving assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0012] Figure 1 This is a cross-sectional view of a high-stability synchronous pulley of the utility model;

[0013] Figure 2 This is a cross-sectional view of a tail sleeve of a high-stability synchronous pulley of the utility model;

[0014] Figure 3 This is a cross-sectional view of a gear sleeve of a high-stability synchronous pulley of the utility model;

[0015] Figure 4 This is a cross-sectional view of a core sleeve of a high-stability synchronous pulley of the utility model;

[0016] Figure 5 This is a top perspective view of a rotating wheel assembly of a high-stability synchronous pulley of the utility model;

[0017] Figure 6This is a bottom perspective view of a rotating wheel assembly of a high-stability synchronous pulley of the utility model;

[0018] Figure 7 This is a three-dimensional diagram of a first bearing of a highly stable synchronous pulley of the utility model.

[0019] The names of the components corresponding to the various figure marks in the figure are: 1. tail sleeve; 2. first bearing; 3. second bearing; 4. core sleeve; 5. gear sleeve; 6. slot; 7. connecting part; 8. mounting part; 9. plug hole; 10. first positioning groove; 11. second positioning groove; 12. frustum; 13. first abutment surface; 14. second abutment surface; 15. first retaining ring; 16. second retaining ring; 17. gear part. DETAILED DESCRIPTION

[0020] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0021] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0022] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0023] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0024] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the examples can be practiced without these specific details.

[0025] See also Figure 1 to Figure 7The utility model provides a high-stability synchronous pulley, including a rotating wheel assembly, a first bearing 2 and a second bearing 3, the rotating wheel assembly including a tail sleeve 1, a core sleeve 4 and a gear sleeve 5, wherein a slot 6 is provided at the bottom of the tail sleeve 1, a connecting portion 7 of the gear sleeve 5 is inserted into the slot 6, a mounting portion 8 is provided on the core sleeve 4, and the mounting portion 8 is inserted into the gear sleeve 5, so that the rotating wheel assembly as a whole will not be loosened due to the vibration of the pulley operation when in use, and the situation that the gear sleeve falls off or the rotating wheel assembly falls apart due to the vibration of the baffle can be avoided; a plug hole 9 is provided in the middle of the core sleeve 4, the first bearing 2 and the second bearing 3 are respectively assembled on the upper and lower end surfaces of the plug hole 9, and the upper end surface of the tail sleeve 1 is provided with a first positioning The first bearing 2 is provided with a first retaining ring 15, and the second bearing 3 is provided with a second retaining ring 16. The first retaining ring 15 is placed in the first positioning groove 10, and the second retaining ring 16 is placed in the second positioning groove 11. The upper end surface of the tail sleeve 1 is provided with a truncated cone 12, and the truncated cone 12 cooperates with the upper end surface of the core sleeve 4 to form the first positioning groove 10. The first positioning groove 10, the truncated cone 12 and the plug hole 9 are arranged concentrically, and the bottom of the plug hole 9 is concave to form the second positioning groove 11. The first positioning groove 10 and the second positioning groove 11 are both cylindrical grooves. The surface of the first positioning groove 10 is provided with a first abutting surface 13, and the first abutting surface 13 is the core On the upper end surface of the sleeve 4, the first retaining ring 15 fits the first abutting surface 13, the surface of the second positioning groove 11 is provided with a second abutting surface 14, the second retaining ring 16 fits the second abutting surface 14, and the outer side of the gear sleeve 5 is provided with a tooth portion 17; when assembling a conventional bearing, if the diameter is too large, it will be difficult to install it into the socket 9, and it cannot be disassembled after assembly, and if the diameter is too small, there will be a large gap between the conventional bearing and the wheel, so that the synchronous pulley and the bearing will deviate and shake during transmission, so that the two end surfaces of the wheel assembly cannot remain flat during rotation, and the larger the diameter of the synchronous pulley or the turntable mounted on the outside of the wheel assembly, the greater the vibration and offset after rotation, thereby affecting the transmission of the overall equipment. In this embodiment, the wheel assembly and each bearing are produced in a matching manner to ensure that they are concentrically arranged after assembly. The first retaining ring 15 is fitted with the first abutment surface 13, and the second retaining ring 16 is fitted with the second abutment surface 14, so that the upper and lower end surfaces of the wheel assembly are locked by the retaining rings when rotating, and no shaking or deviation can occur at this time. The wheel assembly can maintain horizontal rotation, so that the turntable or synchronous pulley connected to its axis remains stable. No matter how large the size of the wheel is, it will not shake during rotation due to the problem of poor precision between the bearing and the wheel assembly, thereby improving stability. In addition, this method reduces the production precision of the bearing, makes assembly simpler and easier, and is stable and accurate during use.

[0026] The utility model provides a highly stable synchronous pulley, in which a rotating wheel assembly is composed of a tail sleeve and a core sleeve which are respectively inserted and matched with a gear sleeve, and has higher stability. The gear sleeve will not fall off or the rotating wheel assembly will not fall apart due to vibration during use. The retaining ring on the end face of the bearing cooperates with the positioning groove on the end face of the rotating wheel, so that the bearings will not shake and vibrate against each other inside the insertion hole of the rotating wheel due to the existence of a gap, thereby avoiding the phenomenon of unstable transmission on the surface of the synchronous pulley, and reducing the machining accuracy requirements of the bearing and the internal insertion hole of the rotating wheel. There will be no problems such as jamming during assembly, thereby improving assembly efficiency.

[0027] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A high-stability synchronous pulley, comprising a rotating wheel assembly, a first bearing (2) and a second bearing (3), Features: The wheel assembly comprises a tail sleeve (1), a core sleeve (4) and a gear sleeve (5); a slot (6) is provided at the bottom of the tail sleeve (1); a connecting portion (7) of the gear sleeve (5) is inserted into the slot (6); a mounting portion (8) is provided on the core sleeve (4); the mounting portion (8) is inserted into the inside of the gear sleeve (5); a plug hole (9) is provided in the middle of the core sleeve (4); the first bearing (2) and the second bearing (3) are respectively mounted on the upper and lower end surfaces of the plug hole (9).

2. The high-stability synchronous pulley according to claim 1, Features: The upper end surface of the tail sleeve (1) is provided with a first positioning groove (10), the lower end surface of the core sleeve (4) is provided with a second positioning groove (11), the end surface of the first bearing (2) is provided with a first retaining ring (15), the end surface of the second bearing (3) is provided with a second retaining ring (16), the first retaining ring (15) is placed in the first positioning groove (10), and the second retaining ring (16) is placed in the second positioning groove (11).

3. The high stability synchronous pulley according to claim 2, Features: The upper end surface of the tail sleeve (1) is provided with a truncated cone (12), and the truncated cone (12) cooperates with the upper end surface of the core sleeve (4) to form the first positioning groove (10), and the first positioning groove (10), the truncated cone (12) and the insertion hole (9) are arranged cocentrically.

4. The high stability synchronous pulley according to claim 2, Features: The bottom of the insertion hole (9) is concave to form the second positioning groove (11), and the first positioning groove (10) and the second positioning groove (11) are both cylindrical grooves.

5. The high-stability synchronous pulley according to claim 2, Features: A first abutment surface (13) is provided on the surface of the first positioning groove (10); the first abutment surface (13) is the upper end surface of the core sleeve (4); and the first retaining ring (15) is in contact with the first abutment surface (13).

6. The high-stability synchronous pulley according to claim 2, Features: A second abutment surface (14) is provided on the surface of the second positioning groove (11), and the second retaining ring (16) is in contact with the second abutment surface (14).

7. The high-stability synchronous pulley according to claim 1, Features: The outer side of the gear sleeve (5) is provided with a gear portion (17).

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