A tensioning device for a main motor of a combing machine

Abstract

The utility model belongs to the combing machine technical field, concretely relates to a kind of tensioner for combing machine main motor, be located on the wallboard of combing machine, for the transmission belt of main motor operation provides tensioning effect, the tensioner includes tension disc and wheel body assembly, wherein, wheel body assembly includes short shaft, a set of bearings are sleeved on short shaft, spacer ring is arranged between a set of bearings, annular spacer sleeve is symmetrically arranged on the two side walls of a set of bearings mutually away, and tensioning wheel body is also sleeved on the circumferential outer wall of a set of bearings;A kind of tensioner for combing machine main motor provided by the utility model aims to redesign tensioning wheel body, on the basis of satisfying that two bearings can evenly distribute radial load, lubricating oil is evenly distributed in two bearings using the special structure of spacer ring, avoid any bearing to bear larger load and cause the situation that tensioner average service life is shortened occurs.

Description

Technical Field

[0001] This utility model belongs to the field of combing machine technology, specifically relating to a tensioning device for the main motor of a combing machine. Background Technology

[0002] A combing machine is a mechanical device used in the spinning process to achieve combing. Its core function is to remove short fibers, neps and impurities, and improve the parallelism and uniformity of fibers. It mainly removes short fibers and impurities by periodically combing the two ends of the cotton tuft, making the remaining fibers more uniform and straight.

[0003] The combing machine is powered by a main motor, and the transmission system transmits the power to each actuator. The transmission system generally relies on belt drive, and the belt must be equipped with a tensioning device during operation to ensure transmission efficiency. However, the tensioning wheel in the tensioning device of the existing combing machine is mostly an off-center wheel. That is, when the tensioning wheel is in use and bears radial load, the load direction is not pointing to the center position between the two bearings. This means that one of the two bearings will always bear an excessive radial load for a long time, affecting the service life of the bearing and thus affecting the average service life of the tensioning device. Utility Model Content

[0004] In view of this, the present invention provides a tensioning device for the main motor of a combing machine, which aims to redesign the tensioning wheel body. On the basis of ensuring that the radial load can be evenly distributed between the two bearings, the special structure of the spacer ring is used to distribute the lubricating oil evenly between the two bearings, thereby avoiding the situation where the average life of the tensioning device is shortened due to the large load on either bearing.

[0005] A tensioning device for the main motor of a combing machine is mounted on the wall panel of the combing machine and is used to provide tension to the drive belt during the operation of the main motor. The tensioning device includes:

[0006] A tension plate is mounted on the wall panel via a rotating shaft. The tension plate has mounting holes, which are threaded holes.

[0007] The wheel assembly includes a short shaft. One end of the short shaft has a threaded portion on its outer wall, which is used to mount the short shaft onto a tension plate through the engagement of the threaded portion with a mounting hole. The other end of the short shaft has a limiting portion. The portion between the threaded portion and the limiting portion is configured as a mounting portion. A set of bearings is fitted onto the mounting portion, and an annular spacer is provided between the bearings. In addition, annular spacers are symmetrically provided on the two side walls of the bearings that are far apart from each other. Furthermore, a tension wheel body is fitted onto the circumferential outer wall of the bearings. The tension wheel body is composed of an integrally formed wheel body and a transmission part. Both the wheel body and the transmission part are columnar structures. The transmission part is located on the circumferential outer wall of the wheel body and is also located in the middle of the bearings in the axial direction. The overall width of the transmission part is smaller than that of the wheel body and is located in the middle of the wheel body in the axial direction. A transmission groove is formed on the circumferential outer wall of the transmission part for engaging with a transmission belt.

[0008] Preferably, the tension plate is also provided with a guide groove. Through the cooperation of the guide groove and the guide column preset on the wall plate, the tensioning wheel body can be limited to rotate along the rotating shaft, thereby realizing the tensioning action of the tensioning device.

[0009] Preferably, in the wheel assembly, the interior of the short shaft is provided with a lubricating oil passage. The oil inlet of the lubricating oil passage is located at the center of the radial section of the upper limit portion of the short shaft, and an oil cup is provided at the oil inlet. The oil outlet of the lubricating oil passage is located on the circumferential sidewall of the short shaft. In addition, an oil collecting groove is provided on the circumferential sidewall of the short shaft along its circumferential direction, and the oil collecting groove is located at the position of the oil outlet.

[0010] Preferably, the position of the spacer corresponds to the position of the oil collection groove, wherein the spacer includes an integrally formed abutment portion, a connecting portion and a reinforcing portion arranged in a ring in the radial direction;

[0011] The abutting part is located between a set of bearings and is in contact with the side walls corresponding to the set of bearings. The connecting part is located on the outer circumferential wall of the abutting part and is provided with two oil passages. The two oil passages are located on both sides of the center of the spacer ring and are arranged symmetrically. Each oil passage partially penetrates the abutting part and completely penetrates the connecting part. Thus, each oil passage and the side walls corresponding to the set of bearings form two oil delivery channels with different areas. The oil delivery channels are connected to the oil collection groove.

[0012] In addition, the reinforcing part is located on the outer circumferential wall of the connecting part, and the two side walls of the reinforcing part do not fit against the two side walls corresponding to the set of bearings.

[0013] Preferably, the radial cross-section of the spacer is "L" shaped, wherein the spacer is composed of a vertical part and a horizontal part, and the horizontal part abuts against the two side walls of a set of bearings that are far apart from each other. At this time, when the threaded part of the short shaft and the mounting hole are engaged, the horizontal part of the set of spacers, the set of bearings, and the abutting part of the spacer ring tightly fill the mounting part in the axial direction of the short shaft.

[0014] The outer circumferential wall of the vertical part is provided with an annular groove, and there is a gap between the outer circumferential wall of the vertical part and the inner circumferential wall of the wheel part.

[0015] Preferably, in the wheel assembly, each bearing is further provided with a retaining ring between it and the spacer, and the retaining ring is engaged in an annular retaining groove pre-set on the inner circumference of the wheel part.

[0016] The beneficial effects of this utility model are as follows:

[0017] In general, this utility model reconfigures the positions of the wheel body and the transmission part in the tensioning wheel body, so that the transmission part is located on the outer circumferential wall of the wheel body and in the middle of the wheel body in the axial direction. The transmission part is also located in the middle of a set of bearings in the axial direction. Thus, when the tensioning wheel body and the transmission belt are in operation, the two bearings in the wheel body assembly can evenly distribute the radial load they receive.

[0018] Furthermore, this invention also sets a spacer between a set of bearings and uses two oil ports on the spacer to supply oil to the bearings on both sides of the spacer. On this basis, each oil port and the corresponding two side walls of a set of bearings form two oil supply channels. With the two oil supply channels having different areas and the two oil ports being centrally symmetrically arranged, the amount of lubricating oil supplied to the two bearings by the two oil ports is equal, ensuring that the service life of the two bearings is the same, thereby making the service life of the tensioning device longer than that of the traditional structure. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the tensioning device in this utility model;

[0021] Figure 2 This is a partial cross-sectional view of the wheel assembly in this utility model;

[0022] Figure 3 This is a schematic diagram of the specific structure of the short shaft in this utility model;

[0023] Figure 4 This is a schematic diagram of the specific structure of the spacer ring of this utility model;

[0024] Figure 5 This is a schematic diagram of the specific structure of the partition sleeve of this utility model. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not 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 effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0027] The technical solution provided in this application will now be described in detail with reference to the accompanying drawings.

[0028] In this technical solution, a tensioning device for the main motor of a combing machine is installed on the wall panel of the combing machine to provide tension for the transmission belt during the operation of the main motor. The tensioning device includes a tension disc 1 and a wheel assembly 2.

[0029] Among them, such as Figure 1-2 As shown, the tension plate 1 is mounted on the wall panel via a rotating shaft. The tension plate 1 has a mounting hole 101, which is a threaded hole. The wall panel is not shown in the figure.

[0030] like Figure 2-3As shown, the wheel assembly 2 includes a short shaft 3. One end of the short shaft 3 has a threaded portion 301 on its outer wall. The short shaft 3 is mounted on the tension plate 1 by the cooperation between the threaded portion 301 and the mounting hole 101. The other end of the short shaft 3 has a limiting portion 302. The portion between the threaded portion 301 and the limiting portion 302 is configured as a mounting portion 303.

[0031] A set of bearings 4 is fitted onto the mounting part 303. A set of annular spacers 5 are provided between the set of bearings 4. In addition, annular spacers 6 are symmetrically provided on the two side walls of the set of bearings 4 that are far apart from each other. On this basis, a tensioning wheel body 7 is also fitted onto the outer circumferential wall of the set of bearings 4. The tensioning wheel body 7 is composed of an integrally formed wheel body part 701 and a transmission part 702. Both the wheel body part 701 and the transmission part 702 are columnar structures, and the transmission part 702 is located on the outer circumferential wall of the wheel body part 701.

[0032] As the core of this application, such as Figure 1-2 As shown, the overall width of the transmission part 702 is smaller than that of the wheel body part 701. The transmission part 702 is located in the middle of the wheel body part 701 in the axial direction, and the transmission part 702 is also located in the middle of a set of bearings 4 in the axial direction. A transmission groove 703 is provided on the outer circumferential wall of the transmission part 702 for cooperating with the transmission belt.

[0033] Based on the above structure, the positional relationship between the transmission part 702 and the wheel part 701, and the positional relationship between the transmission part 702 and a set of bearings 4, ensures that when the tension wheel 7 is used in conjunction with the transmission belt, the radial load it receives can be evenly distributed to a set of bearings 4, thus avoiding excessive load on any one bearing 4 and affecting the overall lifespan of the tensioning device.

[0034] Based on this, this application also provides specific structural configurations for the normal use of the tensioning device, specifically:

[0035] like Figure 1 As shown, the tension plate 1 is also provided with a guide groove 102. Through the cooperation of the guide groove 102 and the guide column preset on the wall plate, the tensioning wheel 7 is limited to rotate along the rotating shaft, thereby realizing the tensioning action of the tensioning device. The guide column and the rotating shaft are not shown in the figure.

[0036] In addition, such as Figure 2-3 As shown, in the wheel assembly 2, a lubricating oil passage 304 is also provided inside the short shaft 3. The oil inlet port 305 of the lubricating oil passage 304 is located at the center of the radial section of the upper limit part 302 of the short shaft 3, and an oil cup 8 is also provided at the oil inlet port 305. The oil outlet port 306 of the lubricating oil passage 304 is located on the circumferential side wall of the short shaft 3. On this basis, an oil collection groove 9 is also provided on the circumferential side wall of the short shaft 3 along its circumferential direction, and the oil collection groove 9 is located at the position of the oil outlet port 306.

[0037] like Figure 2-4 As shown, the position of the spacer ring 5 corresponds to the position of the oil collection groove 9. The spacer ring 5 includes an abutment portion 501, a connecting portion 502 and a reinforcing portion 503 that are integrally formed and arranged in a ring in the radial direction.

[0038] The abutment portion 501 is located between a set of bearings 4 and is in contact with the corresponding side walls of the set of bearings 4. The connecting portion 502 is located on the outer circumferential wall of the abutment portion 501 and is provided with two oil passages 10. The two oil passages 10 are located on both sides of the center of the spacer ring 5 and are arranged symmetrically. Each oil passage 10 partially penetrates the abutment portion 501 and completely penetrates the connecting portion 502. Thus, each oil passage 10 and the corresponding side walls of the set of bearings 4 form two oil delivery channels. The areas of the two oil delivery channels are different, that is, the two oil delivery channels are different in size. Therefore, under the same conditions, the amount of lubricating oil delivered by the two oil delivery channels is different.

[0039] In addition, the reinforcement 503 is located on the outer circumferential wall of the connecting part 502, and the two side walls of the reinforcement 503 do not fit against the two side walls corresponding to the set of bearings 4.

[0040] Based on the above embodiments, when lubricating oil needs to be supplied to bearing 4, oil is supplied to lubricating oil channel 304 through oil inlet port 305 and oil cup 8 using an oil gun. After passing through the lubricating oil channel, the lubricating oil fills the oil collection groove 9. Since the oil delivery channel is connected to the oil collection groove 9, the lubricating oil will then enter bearing 4 through the oil delivery channel to provide lubrication for bearing 4. It should be noted that since the oil delivery volume of the two oil delivery channels in each oil outlet 10 is different, and the two oil outlets 10 are arranged in a centrally symmetrical manner, the total oil delivery volume of the two oil outlets to each bearing 4 on both sides of the spacer ring 5 is the same. This arrangement avoids the situation where it is difficult to evenly distribute the lubricating oil in the two bearings 4 when there is only one oil outlet port 306. The two oil outlets 10 arranged in a centrally symmetrical manner can also ensure that the lubricating oil is placed in the entire circumferential area of ​​bearing 4, thereby avoiding the problem that a bearing 4 is subjected to a large load, which leads to its lubricating oil being consumed too quickly and not replenished in an equal amount, thus easily causing damage.

[0041] like Figure 2 , Figure 5 As shown, the radial cross-section of the spacer 6 is L-shaped. The spacer 6 is composed of a vertical part 601 and a horizontal part 602. The horizontal part 602 abuts against the two side walls of a set of bearings 4 that are far apart from each other. At this time, when the threaded part 301 of the short shaft 3 cooperates with the mounting hole 101, the horizontal part 602 of the spacer 6, the set of bearings 4, and the abutting part 501 of the spacer ring 5 tightly fill the mounting part 303 in the axial direction of the short shaft 3, providing a structural basis for the normal rotation of the tensioning wheel body 7.

[0042] In addition, an annular groove 603 is provided on the outer circumference of the vertical part 601, and there is a gap between the outer circumference of the vertical part 601 and the inner circumference of the wheel body 701. When the bearing 4 is filled with lubricating oil and the tension wheel 7 is in normal rotation, the gap between the lubricating oil and the annular groove 603, the outer circumference of the vertical part 601 and the inner circumference of the wheel body 701 forms a dynamic sealing gap, which prevents a large amount of lubricating oil from flowing out, and thus determines whether there is enough lubricating oil inside the bearing 4.

[0043] In addition, in response to the installation requirements of bearing 4, this application also provides a retaining ring 11 between each bearing 4 and spacer 6, and the retaining ring 11 is engaged in an annular retaining groove preset on the inner circumference of the wheel body 701.

[0044] In general, the tensioning device for the main motor of a combing machine provided by this utility model reconfigures the positions of the wheel body 701 and the transmission part 702 in the tensioning wheel body 7, so that the transmission part 702 is located on the outer circumferential wall of the wheel body 701, the transmission part 702 is located in the middle of the wheel body 701 in the axial direction, and the transmission part 702 is also located in the middle of a set of bearings 4 in the axial direction. Thus, when the tensioning wheel body 7 is running in conjunction with the transmission belt, the two bearings 4 in the wheel body assembly 2 can evenly distribute the radial load they receive.

[0045] Based on this, the spacer 5 allows the lubricating oil to be evenly and adequately distributed in the two bearings 4. Combined with the even distribution of the load on the two bearings 4, it avoids the problem that one bearing 4 may be damaged due to excessive load causing its lubricating oil to be consumed too quickly and not replenished in an equal amount. Ultimately, this makes the service life of the tensioning device longer than that of the traditional structure.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tensioning device for the main motor of a combing machine, mounted on a wall panel of the combing machine, for providing tension to the drive belt during the operation of the main motor, characterized in that... The tensioning device includes: A tension plate is mounted on the wall panel via a rotating shaft. The tension plate has mounting holes, which are threaded holes. The wheel assembly includes a short shaft. One end of the short shaft has a threaded portion on its outer wall, which is used to mount the short shaft onto a tension disc through the engagement of the threaded portion with a mounting hole. The other end of the short shaft has a limiting portion. The portion between the threaded portion and the limiting portion is configured as a mounting portion. A set of bearings is fitted onto the mounting portion, and an annular spacer is provided between the bearings. In addition, annular spacers are symmetrically provided on the two side walls of the bearings that are far apart from each other. Furthermore, a tension wheel body is fitted onto the circumferential outer wall of the bearings. The tension wheel body is composed of an integrally formed wheel body and a transmission part. Both the wheel body and the transmission part are columnar structures, and the transmission part is located on the circumferential outer wall of the wheel body. The overall width of the transmission part is smaller than that of the wheel body. The transmission part is located in the middle of the wheel body in the axial direction, and it is also located in the middle of the bearings in the axial direction. A transmission groove is formed on the circumferential outer wall of the transmission part for engaging with a transmission belt.

2. The tensioning device for the main motor of a combing machine according to claim 1, characterized in that: The tension plate is also provided with a guide groove. Through the cooperation of the guide groove and the guide column preset on the wall plate, the tensioning wheel body can be limited to rotate along the rotating shaft, thereby realizing the tensioning action of the tensioning device.

3. The tensioning device for the main motor of a combing machine according to claim 2, characterized in that: In the wheel assembly, a lubricating oil passage is provided inside the short shaft. The oil inlet of the lubricating oil passage is located at the center of the radial section of the upper limit part of the short shaft, and an oil cup is provided at the oil inlet. The oil outlet of the lubricating oil passage is located on the circumferential side wall of the short shaft. In addition, an oil collection groove is provided on the circumferential side wall of the short shaft along its circumferential direction, and the oil collection groove is located at the position of the oil outlet.

4. A tensioning device for the main motor of a combing machine according to claim 3, characterized in that: The position of the spacer corresponds to the position of the oil collection groove, wherein the spacer includes an integrally formed abutment, a connecting part and a reinforcing part arranged in a ring in the radial direction; The abutting part is located between a set of bearings and is in contact with the side walls corresponding to the set of bearings. The connecting part is located on the outer circumferential wall of the abutting part and is provided with two oil passages. The two oil passages are located on both sides of the center of the spacer ring and are arranged symmetrically. Each oil passage partially penetrates the abutting part and completely penetrates the connecting part. Thus, each oil passage and the side walls corresponding to the set of bearings form two oil delivery channels with different areas. The oil delivery channels are connected to the oil collection groove. In addition, the reinforcing part is located on the outer circumferential wall of the connecting part, and the two side walls of the reinforcing part do not fit against the two side walls corresponding to the set of bearings.

5. A tensioning device for the main motor of a combing machine according to claim 4, characterized in that: The radial cross-section of the spacer is "L" shaped. The spacer is composed of a vertical part and a horizontal part. The horizontal part abuts against the two side walls of a set of bearings that are far apart from each other. At this time, when the threaded part of the short shaft is engaged with the mounting hole, the horizontal part of the spacer, the set of bearings, and the abutting part of the spacer ring tightly fill the mounting part in the axial direction of the short shaft. The outer circumferential wall of the vertical part is provided with an annular groove, and there is a gap between the outer circumferential wall of the vertical part and the inner circumferential wall of the wheel part.

6. A tensioning device for the main motor of a combing machine according to claim 5, characterized in that: In the wheel assembly, each bearing is provided with a retaining ring between itself and the spacer, and the retaining ring is engaged in an annular retaining groove pre-set on the inner circumference of the wheel part.

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