Short shaft structure of friction wheel

Abstract

The utility model provides a friction wheel short shaft structure which comprises a short shaft, one end of the short shaft is connected with a tensioning nut in a threaded mode, a locking block is fixedly arranged at the end, away from the tensioning nut, of the short shaft, and the locking block is of a prism structure comprising at least three side edges. The friction wheel broken shaft assembly solves the problems that an existing friction wheel broken shaft assembly is not provided with an acting point and is inconvenient to disassemble, manpower is consumed, and a fixing pin is prone to abrasion during maintenance.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile assembly, in particular to a friction wheel short shaft structure. Background Art

[0002] With the continuous development of industry, the degree of equipment automation is constantly improving, and the requirements for rapid maintenance of equipment are also getting higher and higher. At present, the speed chain lines on the market are mostly light, practical, and compact. The main vulnerable parts are friction wheels. The number of friction wheels installed on a line is generally more than 500. Since the connection between the various components of the existing friction wheel broken shaft assembly is very compact, when repairing and adjusting the tensioning nut, due to the characteristics of the friction wheel, the short shaft will rotate accordingly, and the short shaft has no fulcrum as a whole. The maintenance worker needs to use calipers, screwdrivers and other tools to remove all the fixing pins, and then clamp the short shaft to prevent rotation, and two people are required to complete the adjustment of the tensioning nut. This method is time-consuming and labor-intensive, difficult to maintain, and easily causes wear of the fixing pins. Therefore, it is necessary to invent a new friction wheel short shaft structure. Utility Model Content

[0003] The utility model aims to provide a friction wheel short shaft structure to solve the problems that the existing friction wheel broken shaft assembly has no fulcrum, is inconvenient to disassemble, consumes manpower, and easily causes the fixing pin to wear during maintenance.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A friction wheel short shaft structure comprises a short shaft, one end of which is threadedly connected to a tension nut, and one end of the short shaft away from the tension nut is fixedly provided with a locking block, wherein the locking block is a prism structure including at least three side edges.

[0006] Furthermore, the locking block is any one of a regular triangular prism, a regular quadrangular prism, a regular pentagonal prism, and a regular hexagonal prism.

[0007] Furthermore, the locking block and the short shaft are integrally formed.

[0008] Furthermore, the short shaft is located on the shaft section between the tensioning nut and the locking block, and a tensioning spring, a first sleeve, a sprocket, a second sleeve, a first bearing, a third sleeve, a friction wheel, and a second bearing are sequentially sleeved thereon, and the inner rings of the first bearing and the second bearing are fixedly connected to the short shaft.

[0009] Furthermore, a first sleeve is arranged between the tensioning spring and the sprocket, and a second sleeve is arranged between the sprocket and the first bearing. The first sleeve and the second sleeve are used to compress the sprocket and the first bearing. One end of the tensioning spring abuts against the tensioning nut, and the other end abuts against the first sleeve.

[0010] Furthermore, a first limiting pin groove is arranged on the side wall of the first shaft sleeve, a first limiting pin is arranged in the first limiting pin groove, and the first limiting pin passes through the short shaft.

[0011] Furthermore, a limit pin hole is arranged on the side wall of the second shaft sleeve, a second limit pin is arranged in the limit pin hole, and the second limit pin passes through the short shaft.

[0012] Furthermore, a third sleeve is provided between the first bearing and the friction wheel, and the third sleeve is used to press the first bearing and the friction wheel.

[0013] Furthermore, a convex ring is provided on the side of the friction wheel facing the second bearing, a second limit pin groove is opened on the side of the convex ring, a third limit pin is provided in the second limit pin groove, and the third limit pin penetrates into the short shaft.

[0014] The beneficial effects of the utility model are as follows: the friction wheel short shaft structure of the utility model is simple, the manufacturing process is simple, it is easy to promote, the production cost is low, it is easy for maintenance personnel to operate, and it can simplify the work that requires two people to complete to that which can be completed by one person, which can effectively improve maintenance efficiency and reduce personnel costs.

[0015] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of a friction wheel short shaft assembled on a double-speed chain line track of the utility model.

[0017] Figure 2 This is a structural diagram of a friction wheel short shaft assembly in the utility model.

[0018] Figure 3 This is a front view of a friction wheel short shaft assembly in the utility model.

[0019] Figure 4 It is a cross-sectional view of a friction wheel short shaft assembly in the utility model.

[0020] Figure 5 The exploded view is a friction wheel short shaft assembly in the utility model. DETAILED DESCRIPTION

[0021] like Figures 1 to 3A friction wheel short shaft structure shown in the figure includes a short shaft 1, one end of the short shaft 1 is connected to a tensioning nut 2 by threading, and a locking block 101 is fixedly provided at one end of the short shaft 1 away from the tensioning nut 2, and the locking block 101 is a prism structure including at least three side edges. The length of the locking block 101 is 10mm. When the maintenance personnel adjust the tension of the friction wheel or disassemble the short shaft, they only need to use an adjustable wrench to fix the locking block 101, and then use another adjustable wrench to adjust the tensioning nut 2 at the other end of the short shaft. Only one person can easily adjust the tension or complete the disassembly of the short shaft.

[0022] Preferably, in combination with the above solution, in order to better adapt to existing tools, the locking block 101 is any one of a regular triangular prism, a regular quadrangular prism, a regular pentagonal prism, and a regular hexagonal prism.

[0023] Preferably, in combination with the above solution, in order to facilitate processing and taking into account the problem that welding may damage the bearing, the locking block 101 and the short shaft 1 are processed into an integral shape.

[0024] Preferably, in combination with the above scheme, in order to realize the function of the overall friction wheel short shaft assembly, the short shaft 1 is located on the shaft section between the tensioning nut 2 and the locking block 101 and is sequentially sleeved with a tensioning spring 3, a first sleeve 4, a sprocket 5, a second sleeve 6, a first bearing 7, a third sleeve 8, a friction wheel 9, and a second bearing 10. The inner rings of the first bearing 7 and the second bearing 10 are fixedly connected to the short shaft 1, and the outer rings of the first bearing 7 and the second bearing 10 are fixedly connected to the mounting holes of the track.

[0025] Preferably, in combination with the above scheme, in order to facilitate the compression of one side of the sprocket 5 by the tensioning spring 3, a first sleeve 4 is arranged between the tensioning spring 3 and the sprocket 5, and in order to compress the other side of the sprocket 5 and one side of the first bearing 7, a second sleeve 6 is arranged between the sprocket 5 and the first bearing 7. The first sleeve 4 and the second sleeve 6 are used to compress the sprocket 5 and the first bearing 7, and one end of the tensioning spring 3 abuts against the tensioning nut 2, and the other end abuts against the first sleeve 4.

[0026] Preferably, in combination with the above scheme, in order to facilitate the fixing of the first sleeve 4 and prevent the first sleeve 4 from moving on the short shaft 1, a first limit pin groove 401 is provided on the side wall of the first sleeve 4, and a first limit pin 11 is provided in the first limit pin groove 401, and the first limit pin 11 passes through the short shaft 1.

[0027] Preferably, in combination with the above scheme, in order to facilitate the fixing of the second sleeve 6 and prevent the second sleeve 6 from moving on the short shaft 1, a limit pin hole 601 is provided on the side wall of the second sleeve 6, and a second limit pin 12 is provided in the limit pin hole 601, and the second limit pin 12 passes through the short shaft 1.

[0028] Preferably, in combination with the above scheme, in order to facilitate the compression and fixing of one side of the friction wheel 8 and the other side of the first bearing 7, a third sleeve 8 is provided between the first bearing 7 and the friction wheel 9, and the third sleeve 8 is used to compress the first bearing 7 and the friction wheel 9.

[0029] Preferably, in combination with the above scheme, in order to facilitate the limiting and fixing of the friction wheel 9 and prevent the friction wheel 9 from moving on the short shaft 1, a convex ring 901 is provided on the side of the friction wheel 9 facing the second bearing 10, and a second limiting pin groove 902 is opened on the side of the convex ring 901, and a third limiting pin 13 is provided in the second limiting pin groove 902, and the third limiting pin 13 penetrates into the short shaft 1.

[0030] It should be noted that all directional indications in the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or they are directly applied to other occasions without improvement, they all fall within the protection scope of the utility model.

Claims

1. A friction wheel short shaft structure, comprising a short shaft (1), one end of the short shaft (1) being threadedly connected to a tensioning nut (2), wherein: A locking block (101) is fixedly provided at one end of the short shaft (1) away from the tensioning nut (2), and the locking block (101) is a prism structure including at least three side edges.

2. The friction wheel short shaft structure according to claim 1 is characterized in that: The locking block (101) is any one of a regular triangular prism, a regular quadrangular prism, a regular pentagonal prism and a regular hexagonal prism.

3. The friction wheel short shaft structure according to claim 1 or 2, characterized in that: The locking block (101) and the short shaft (1) are integrally formed.

4. The friction wheel short shaft structure according to claim 1 is characterized in that: The short shaft (1) is provided with a tension spring (3), a first shaft sleeve (4), a sprocket (5), a second shaft sleeve (6), a first bearing (7), a friction wheel (9), and a second bearing (10) in sequence on the shaft section between the tension nut (2) and the locking block (101); the inner rings of the first bearing (7) and the second bearing (10) are both fixedly connected to the short shaft (1).

5. The friction wheel short shaft structure according to claim 4 is characterized in that: A first sleeve (4) is arranged between the tension spring (3) and the sprocket (5), and a second sleeve (6) is arranged between the sprocket (5) and the first bearing (7). The first sleeve (4) and the second sleeve (6) are used to press the sprocket (5) and the first bearing (7). One end of the tension spring (3) abuts against the tension nut (2), and the other end abuts against the first sleeve (4).

6. The friction wheel short shaft structure according to claim 5 is characterized in that: A first limiting pin groove (401) is arranged on the side wall of the first shaft sleeve (4), a first limiting pin (11) is arranged in the first limiting pin groove (401), and the first limiting pin (11) passes through the short shaft (1).

7. The friction wheel short shaft structure according to claim 5 is characterized in that: A limit pin hole (601) is provided on the side wall of the second shaft sleeve (6), a second limit pin (12) is provided in the limit pin hole (601), and the second limit pin (12) passes through the short shaft (1).

8. The friction wheel short shaft structure according to claim 4 is characterized in that: A third sleeve (8) is arranged between the first bearing (7) and the friction wheel (9), and the third sleeve (8) is used to press the first bearing (7) and the friction wheel (9).

9. The friction wheel short shaft structure according to claim 8, characterized in that: A convex ring (901) is provided on the side of the friction wheel (9) facing the second bearing (10), a second limit pin groove (902) is provided on the side of the convex ring (901), a third limit pin (13) is provided in the second limit pin groove (902), and the third limit pin (13) penetrates into the short shaft (1).

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