Loom back rest swing arm device

Abstract

The utility model discloses a loom back beam swing arm device, it is in order to solve the problem of bearing eccentric wear and short life caused by swing in prior art. The device includes back beam swing arm and mounting shaft, its innovation lies in: back beam swing arm is connected with mounting shaft through a overrunning clutch, and the inner ring of overrunning clutch is sleeved on mounting shaft through a needle bearing. Through the one-way transmission characteristics of overrunning clutch, the reciprocating swing of back beam swing arm is converted into the one-way continuous rotation movement of inner ring around mounting shaft. The utility model converts swing into rotation, makes needle bearing can rotate a whole circle, thereby realized even wear, improved the service life of bearing significantly, reduced the maintenance cost of equipment.

Description

Technical Field

[0001] This utility model relates to the field of textile machinery, specifically to a swing arm device for the rear beam of a loom. Background Technology

[0002] In existing loom backbeam swing arm devices, ordinary bearings are typically used to connect the swinging components. Because the backbeam swing arm only oscillates within a limited angle, the bearings cannot achieve full rotation, resulting in severe localized wear, shortened service life, high maintenance frequency, and affecting the loom's operating efficiency and stability.

[0003] Therefore, it is necessary to provide a new technical solution. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a rear beam swing arm device with an overrunning clutch, which converts the swing motion into a unidirectional full-circumference rotation motion, so that the bearing wear is uniform and the service life is extended.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A loom back beam swing arm device includes a back beam swing arm and a mounting shaft. The back beam swing arm is connected to the mounting shaft via an overrunning clutch, and the inner ring of the overrunning clutch is sleeved on the mounting shaft via a needle roller bearing.

[0007] The overrunning clutch is configured to convert the reciprocating oscillation of the rear beam swing arm into a unidirectional continuous rotational motion of the inner ring around the mounting shaft.

[0008] Furthermore, the overrunning clutch includes an outer ring, an inner ring, a rolling element located between the inner and outer rings, and an elastic element for pressing the rolling element; when the outer ring rotates relative to the inner ring in a first direction, the rolling element is wedged to transmit torque; when it rotates in the opposite direction, the torque transmission is released.

[0009] Furthermore, the rolling element is a cylindrical roller, and the elastic element is a spring.

[0010] Furthermore, the mounting shaft is interference-fitted with a support component fixed to the frame.

[0011] Furthermore, the outer ring of the overrunning clutch is fixedly connected to the rear beam swing arm.

[0012] This utility model has the following beneficial effects:

[0013] By using an overrunning clutch to convert the reciprocating oscillation of the rear beam swing arm into a unidirectional continuous rotation of the inner ring, this change in motion drives the connected needle roller bearing to rotate a full circle, thereby ensuring uniform wear of its raceway and rolling elements. This fundamentally solves the problem of uneven wear caused by oscillation, significantly extends the service life of the bearing and the entire device, and reduces maintenance costs and downtime.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] 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.

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the loom rear beam swing arm device provided in one embodiment;

[0017] Figure 2 This is a cross-sectional structural schematic diagram of the loom rear beam swing arm device provided in one embodiment;

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of an overrunning clutch provided in one embodiment;

[0019] Figure 4 This is a schematic cross-sectional view of an overrunning clutch provided in one embodiment.

[0020] The attached figures are labeled as follows:

[0021] 1-Rear beam swing arm, 2-Mounting shaft, 3-Overrunning clutch, 31-Outer ring, 32-Inner ring, 33-Rolling element, 34-Elastic element, 4-Needle roller bearing, 5-Supporting parts. Detailed Implementation

[0022] The technical solutions of the present invention 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 invention, and not all embodiments.

[0023] This utility model discloses a loom rear beam swing arm device, referenced... Figures 1 to 4The device includes a rear beam swing arm 1 and a mounting shaft 2. The rear beam swing arm 1 is connected to the mounting shaft 2 via an overrunning clutch 3. The inner ring of the overrunning clutch 3 is sleeved on the mounting shaft 2 via a needle roller bearing 4. The overrunning clutch 3 is configured to convert the reciprocating swing of the rear beam swing arm 1 into a unidirectional continuous rotational motion of the inner ring 32 around the mounting shaft 2.

[0024] The overrunning clutch 3 includes an outer ring 31, an inner ring 32, a rolling element 33 located between the inner and outer rings, and an elastic element 34 for pressing the rolling element 33. When the outer ring 31 rotates relative to the inner ring 32 in a first direction, the rolling element 33 is wedged to transmit torque; when it rotates in the opposite direction, the torque transmission is released.

[0025] In one embodiment, the rolling element 33 is a cylindrical roller, and the elastic element 34 is a spring.

[0026] The mounting shaft 2 is connected to a support part 5 fixed to the frame by an interference fit.

[0027] The outer ring 31 of the overrunning clutch 3 is fixedly connected to the rear beam swing arm 1.

[0028] The working principle of this invention is as follows: the rear beam swing arm is connected to the mounting shaft via an overrunning clutch. The inner ring of the overrunning clutch is mounted on the mounting shaft via a needle roller bearing, allowing the inner ring to rotate freely. The outer ring of the overrunning clutch is fixed to the rear beam swing arm.

[0029] When the rear beam swing arm oscillates under the tension of the warp yarns, it drives the outer ring of the overrunning clutch to reciprocate. Based on the unidirectional transmission characteristic of the overrunning clutch, in one oscillation direction, the outer ring drives the inner ring through rolling elements (such as cylindrical rollers); in the other oscillation direction, the outer ring disengages from the inner ring. Since the inner ring is mounted on a fixed shaft via needle roller bearings, it can rotate unidirectionally and continuously around the fixed shaft when driven. In this way, the reciprocating oscillation of the rear beam swing arm is converted into a full-circumference rotation of the inner ring and needle roller bearings, thereby achieving uniform wear and extending service life.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A loom back beam swing arm device, comprising a back beam swing arm and a mounting shaft, characterized in that: The rear beam swing arm is connected to the mounting shaft via an overrunning clutch, and the inner ring of the overrunning clutch is sleeved on the mounting shaft via a needle roller bearing. The overrunning clutch is configured to convert the reciprocating oscillation of the rear beam swing arm into a unidirectional continuous rotational motion of the inner ring around the mounting shaft.

2. The loom back beam swing arm device according to claim 1, characterized in that: The overrunning clutch includes an outer ring, an inner ring, a rolling element located between the inner and outer rings, and an elastic element for pressing the rolling element; when the outer ring rotates relative to the inner ring in a first direction, the rolling element is wedged to transmit torque; when it rotates in the opposite direction, the torque transmission is released.

3. The loom back beam swing arm device according to claim 2, characterized in that: The rolling element is a cylindrical roller, and the elastic element is a spring.

4. The loom back beam swing arm device according to claim 1, characterized in that: The mounting shaft is interference-fitted with a support component fixed to the frame.

5. The loom back beam swing arm device according to claim 1, characterized in that: The outer ring of the overrunning clutch is fixedly connected to the rear beam swing arm.

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