Dynamic anti-backlash ball seat

Abstract

The utility model belongs to the field of fatigue testing machines, and particularly relates to a dynamic anti-backlash ball seat. The device comprises a main body part, a bearing seat, two thrust knuckle bearings and a pull rod, an installation cavity is formed in the main body part, the two thrust knuckle bearings are installed at the two ends of the bearing seat, the thrust knuckle bearings and the bearing seat are both arranged in the installation cavity, and the pull rod is arranged in the installation cavity. The thrust knuckle bearing is connected with the inner wall of the mounting cavity, a through hole is formed in one side of the main body part, and the pull rod penetrates through the through hole to be connected with the thrust knuckle bearing and the bearing seat; the device overcomes the defects of complicated original structure, high processing difficulty, poor reliability and the like, and is simple and convenient to manufacture and process, simple to mount, low in cost and easy to process and mount.

Description

Technical Field

[0001] The utility model relates to the field of fatigue testing machines, in particular to a dynamic anti-backlash ball seat. Background Art

[0002] Fatigue testing machines are used to measure the fatigue properties, fatigue life, pre-cracks and crack propagation tests of metals, alloy materials and their components (such as operating joints, fasteners, spiral motion parts, etc.) under tension, compression or tension-compression alternating loads at room temperature. Traditional ball joints and ball seats meet the requirements of dynamic testing machines. When the testing machine performs tension and compression tests on the specimen during fatigue testing, it is required that there is no gap during the test process. The ball seat plays a major role in the test data of the fatigue testing machine during the test process. However, the continued processing of existing ball heads and ball seats is difficult, and heat treatment is also a relatively complicated process.

[0003] Therefore, in order to solve the above problems, a dynamic anti-backlash ball seat is proposed. Utility Model Content

[0004] The present invention aims to solve the above problems and designs a dynamic anti-backlash ball seat. The device solves the defects of the original structure, such as complex structure, difficult processing and poor reliability. The technology makes the manufacturing and processing simple and convenient, the installation is simple, and the cost is low and easy to process and install.

[0005] To achieve the above-mentioned purpose, the utility model provides a dynamic anti-backlash ball seat, including; a main body, a bearing seat, a thrust spherical bearing and a pull rod, the interior of the main body is provided with an installation cavity, the two thrust spherical bearings are installed at both ends of the bearing seat, the thrust spherical bearing and the bearing seat are both placed in the installation cavity, the thrust spherical bearing is connected to the inner wall of the installation cavity, a through hole is opened on one side of the main body, the pull rod passes through the through hole and is connected to the thrust spherical bearing and the bearing seat.

[0006] In the above manner, the thrust spherical plain bearing replaces the traditional ball joint, which is easy to install and can achieve the same effect.

[0007] Furthermore, the main body includes a connecting base and a pressure plate, and the connecting base and the pressure plate are both cylindrical structures with an open end. The through hole is provided at the bottom of the pressure plate, and the openings of the connecting base and the pressure plate are connected and fixedly connected by connecting screws. The installation cavity is located between the connecting base and the pressure plate.

[0008] In the above manner, the entire device can be disassembled and the thrust spherical bearing can be installed inside, which provides protection and facilitates installation. At the same time, the detachable connection makes it easy to replace parts.

[0009] Furthermore, the main body also includes an anti-backlash washer, which is arranged between the connecting base and the pressure plate.

[0010] Furthermore, a mounting hole is provided on the pressure plate, the mounting hole is located at the bottom of the pressure plate, and the connecting screw is placed inside the mounting hole.

[0011] Furthermore, the thrust spherical bearing adopts a self-lubricating thrust bearing.

[0012] Furthermore, there are two bearing seats, and the end of the pull rod passes through the thrust spherical bearing, the bearing seat, the anti-backlash washer, the bearing seat and the thrust spherical bearing in sequence.

[0013] In summary, the present invention has the following advantages and beneficial technical effects:

[0014] 1. This utility model solves the defects of the original complex structure, difficult processing, poor reliability, etc. The technology makes the manufacturing and processing simple and convenient, the installation is simple, and the cost is low, and it is easy to process and install.

[0015] 2. The utility model provides a dynamic anti-backlash ball seat that achieves the same effect as a ball joint through two thrust joint bearings, and the device is more convenient to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 This is a structural diagram of a dynamic anti-backlash ball seat of the utility model;

[0018] Figure 2 This is a front view of a dynamic anti-backlash ball seat of the utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of a dynamic anti-backlash ball seat of the utility model;

[0020] Figure 4 It is a side view of a dynamic anti-backlash ball seat of the utility model.

[0021] The reference numerals in the accompanying drawings are:

[0022] 1-main body; 11-connecting base; 12-pressure plate; 121-mounting hole; 13-anti-backlash washer; 14-mounting cavity; 15-through hole;

[0023] 2-bearing seat; 3-thrust spherical bearing; 4-connecting screw; 5-pull rod. DETAILED DESCRIPTION

[0024] The following is combined with Figures 1-4 The present invention will be further described in detail. Examples of embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0025] In the description of this utility model, unless otherwise expressly specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed or detachable connections, mechanical or electrical connections, direct or indirect connections through an intermediate medium, and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0026] In the description of this embodiment, the terms "upper", "lower", "right", etc., and the like, are based on the directions or positions shown in the accompanying drawings and are used only for the convenience of description and simplification of operation. They are not intended to indicate or imply that the devices or components referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention. In addition, the terms "first" and "second" are used only to distinguish in the description and have no special meaning. The parts and equipment all adopt conventional models in the prior art, and the circuit connections adopt conventional connection methods in the prior art. They will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0027] like Figure 1 、 Figure 2 and Figure 3 As shown, it includes; a main body 1, a bearing seat 2, a thrust spherical bearing 3 and a pull rod 5. An installation cavity 14 is provided inside the main body 1. There are two thrust spherical bearings 3. The two thrust spherical bearings 3 are installed at both ends of the bearing seat 2. The thrust spherical bearings 3 and the bearing seat 2 are both placed in the installation cavity 14. The thrust spherical bearings 3 are connected to the inner wall of the installation cavity 14. A through hole 15 is opened on one side of the main body 1. The pull rod 5 passes through the through hole 15 and is connected to the thrust spherical bearing 3 and the bearing seat 2.

[0028] like Figure 2 and Figure 4 As shown, the main body 1 includes a connecting base 11 and a pressure plate 12. The connecting base 11 and the pressure plate 12 are both cylindrical structures with one end open. A through hole 15 is provided at the bottom of the pressure plate 12. The openings of the connecting base 11 and the pressure plate 12 are connected and fixedly connected by connecting screws 4. The installation cavity 14 is located between the connecting base 11 and the pressure plate 12.

[0029] like Figure 1 、 Figure 2 and Figure 3 As shown, the main body 1 further includes an anti-backlash washer 13 , which is placed between the connecting base 11 and the pressure plate 12 .

[0030] like Figure 1 、 Figure 2 and Figure 3 As shown, a mounting hole 121 is provided on the pressure plate 12, and the mounting hole 121 is located at the bottom of the pressure plate 12. The connecting screw 4 is placed inside the mounting hole 121 and passes through the mounting hole 121 to connect with the connecting base 11. There are two bearing seats 2. The end of the pull rod 5 passes through the thrust spherical bearing 3, the bearing seat 2, the anti-backlash washer 13, the bearing seat 2 and the thrust spherical bearing 3 in sequence. The inserted pull rod 5 is then placed in the pressure plate 12. Subsequently, the connecting base 11 is connected to the thrust spherical bearing 3. Finally, the pressure plate 12 and the connecting base 11 are connected by the connecting screw 4. The assembly of this device is completed.

[0031] like Figure 1 、 Figure 2 and Figure 3 As shown, the thrust spherical bearing 3 adopts a self-lubricating thrust bearing.

[0032] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A dynamic anti-backlash ball seat, characterized in that: The invention comprises a main body (1), a bearing seat (2), a thrust spherical bearing (3) and a pull rod (5), wherein a mounting cavity (14) is provided inside the main body (1), there are two thrust spherical bearings (3), the two thrust spherical bearings (3) are mounted at both ends of the bearing seat (2), the thrust spherical bearing (3) and the bearing seat (2) are both placed in the mounting cavity (14), the thrust spherical bearing (3) is connected to the inner wall of the mounting cavity (14), a through hole (15) is provided on one side of the main body (1), and the pull rod (5) passes through the through hole (15) and is connected to the thrust spherical bearing (3) and the bearing seat (2).

2. A dynamic anti-backlash ball seat according to claim 1, characterized in that: The main body (1) includes a connecting base (11) and a pressure plate (12), wherein the connecting base (11) and the pressure plate (12) are both cylindrical structures with one end open, and the bottom of the pressure plate (12) is provided with the through hole (15), and the openings of the connecting base (11) and the pressure plate (12) are connected and fixedly connected by connecting screws (4), and the mounting cavity (14) is located between the connecting base (11) and the pressure plate (12).

3. A dynamic anti-backlash ball seat according to claim 2, characterized in that: The main body (1) further comprises an anti-backlash washer (13), and the anti-backlash washer (13) is arranged between the connecting base (11) and the pressure plate (12).

4. A dynamic anti-backlash ball seat according to claim 3, characterized in that: A mounting hole (121) is provided on the pressure plate (12), the mounting hole (121) is located at the bottom of the pressure plate (12), and the connecting screw (4) is placed inside the mounting hole (121).

5. The dynamic anti-backlash ball seat according to claim 1, characterized in that: The thrust spherical bearing (3) adopts a self-lubricating thrust bearing.

6. The dynamic anti-backlash ball seat according to claim 3, characterized in that: There are two bearing seats (2), and the end of the pull rod (5) passes through the thrust spherical bearing (3), the bearing seat (2), the anti-backlash washer (13), the bearing seat (2) and the thrust spherical bearing (3) in sequence.

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