Transmission shaft positioning device for composite fibers

Abstract

The utility model discloses a transmission shaft positioning device for composite fiber, which relates to the technical field of spinning pumps and comprises a telescopic transmission component, the telescopic transmission component comprises a transmission shaft tube, a telescopic joint, a stop key and a universal joint, the telescopic joint is slidably arranged in the transmission shaft tube, the stop key is welded on the outer wall of the telescopic joint, and the universal joint is connected with the telescopic joint. The transmission shaft tube is in clamped transmission with a key protrusion at the front end of the telescopic joint through an internal key groove, and the circumferential height of the portion, protruding out of the telescopic joint, of the stop key is larger than the diameter of the internal key groove of the transmission shaft tube. According to the transmission shaft positioning device for the composite fibers, after improvement, the stop key welded to the telescopic joint is additionally arranged, so that when a jackscrew is loosened and the telescopic joint slides to a seat hole of a transmission shaft pipe, the stop key can touch the left end face of the transmission shaft pipe, the transmission shaft pipe is prevented from continuously sliding rightwards, and the service life of the transmission shaft pipe is prolonged. Therefore, the rear shaft is prevented from falling off from the spinning pump end, and safety accidents are prevented from happening.

Description

Technical Field

[0001] The utility model relates to the technical field of spinning pumps, in particular to a transmission shaft positioning device for composite fibers. Background Technique

[0002] When high-performance composite fiber spinning is carried out, a spinning pump device is required.

[0003] There is a universal joint drive shaft between the motor reduction box and the spinning pump. Due to the defect of the original design, the drive shaft may fall off from the spinning pump end, resulting in safety accidents.

[0004] Therefore, in view of this, in view of the existing structural deficiencies, research and improvement are carried out, and a transmission shaft positioning device for composite fibers is proposed. Content of the Utility Model

[0005] The purpose of the utility model is to provide a transmission shaft positioning device for composite fibers to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A transmission shaft positioning device for composite fibers, including a telescopic transmission component, the telescopic transmission component includes a transmission shaft tube, a telescopic joint, a stop key and a universal joint. A telescopic joint is slidably arranged inside the transmission shaft tube, and a stop key is welded on the outer wall of the telescopic joint. Universal joints are connected to both ends of the transmission shaft tube and the telescopic joint.

[0007] Further, the transmission shaft tube is in driving engagement with the key protrusion at the front end of the telescopic joint through an internal key groove, and the circumferential height of the stop key protruding from the telescopic joint is greater than the diameter of the internal key groove of the transmission shaft tube.

[0008] Further, the universal joint is composed of front and rear joint forks, and the universal joint is rotationally matched with the internal cross shaft through a needle bearing.

[0009] Further, flanges are externally connected to both the front and rear universal joints, and the front flange is drivingly connected to a front shaft.

[0010] Further, the front shaft is fixedly connected to the output end of the motor reduction box, and the motor reduction box is composed of a servo motor and a reduction gear box.

[0011] Further, the rear flange is drivingly connected to a rear shaft, and the output end of the rear shaft is connected to the spinning pump body.

[0012] Further, the spinning pump body is drivingly connected to the rear universal joint of the telescopic joint through a setscrew.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. Before the improvement of the present utility model, when the setscrew became loose, the expansion joint would slide into the seat hole of the transmission shaft tube, causing the overall length of the transmission shaft to shorten to 615 mm, far less than 653 mm. As a result, the rear shaft connected to the spinning pump body would fall off, leading to safety accidents. After improvement, a stop key welded to the expansion joint was added. In this way, when the setscrew became loose and the expansion joint slid into the seat hole of the transmission shaft tube, the stop key would touch the left end face of the transmission shaft tube, thus restricting its further sliding to the right. This ensured that the rear shaft would not fall off from the spinning pump end and guaranteed that safety accidents would not occur, completely eliminating potential safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic three-dimensional structure diagram of the whole device of the present utility model;

[0016] Figure 2 is an exploded structure diagram of the expansion drive assembly of the present utility model;

[0017] Figure 3 is a schematic plan structure diagram of the whole device of the present utility model.

[0018] In the figure: 1. Expansion drive assembly; 101. Transmission shaft tube; 102. Expansion joint; 103. Stop key; 104. Universal joint; 2. Flange; 3. Front shaft; 4. Motor reduction box; 5. Rear shaft; 6. Spinning pump body; 7. Setscrew. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following further describes the embodiments of the present utility model in detail with reference to the drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0020] As Figures 1 to 3As shown in the figure, a drive shaft positioning device for composite fibers includes a telescopic drive assembly 1. The telescopic drive assembly 1 includes a drive shaft tube 101, a telescopic joint 102, a stop key 103, and a universal joint 104. The telescopic joint 102 is slidably arranged inside the drive shaft tube 101, and a stop key 103 is welded to the outer wall of the telescopic joint 102. Universal joints 104 are connected to both ends of the drive shaft tube 101 and the telescopic joint 102. The drive shaft tube 101 is in driving engagement with the key projection at the front end of the telescopic joint 102 through the internal keyway. The circumferential height by which the stop key 103 protrudes from the telescopic joint 102 is greater than the diameter of the internal keyway of the drive shaft tube 101. The universal joint 104 is composed of front and rear joint forks, and the universal joint 104 is rotationally matched with the internal cross shaft through a needle bearing. After improvement, the stop key 103 welded to the telescopic joint 102 is added. In this way, when the setscrew 7 loosens and the telescopic joint 102 slides towards the seat hole of the drive shaft tube 101, the stop key 103 will touch the left end face of the drive shaft tube 101, thereby restricting its further sliding to the right. In this way, it is ensured that the rear shaft 5 will not fall off from the spinning pump end, ensuring that no safety accidents will occur and completely eliminating potential safety hazards. Flanges 2 are externally connected to both the front and rear universal joints 104. The front flange 2 is in driving connection with the front shaft 3. The front shaft 3 is fixedly connected to the output end of the motor reduction gearbox 4, and the motor reduction gearbox 4 is composed of a servo motor and a reduction gearbox. The rear flange 2 is in driving connection with the rear shaft 5, and the output end of the rear shaft 5 is connected to the spinning pump body 6. The spinning pump body 6 is in driving connection with the rear universal joint 104 at the rear end of the telescopic joint 102 through a setscrew 7.

[0021] Working principle: When using this drive shaft positioning device for composite fibers, before the improvement of the present utility model, when the setscrew 7 loosened, the telescopic joint 102 would slide into the seat hole of the drive shaft tube 101, resulting in the overall length of the drive shaft being shortened to 615 mm, which is far less than 653 mm. In this way, the rear shaft 5 connected to the spinning pump body 6 would fall off, causing a safety accident. After improvement, the stop key 103 welded to the telescopic joint 102 is added. In this way, when the setscrew 7 loosens and the telescopic joint 102 slides towards the seat hole of the drive shaft tube 101, the stop key 103 will touch the left end face of the drive shaft tube 101, thereby restricting its further sliding to the right. In this way, it is ensured that the rear shaft 5 will not fall off from the spinning pump end, ensuring that no safety accidents will occur and completely eliminating potential safety hazards.

[0022] The embodiments of the present utility model are given for purposes of illustration and description, and are not exhaustive or limit the present utility model to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present utility model, and to enable those of ordinary skill in the art to understand the present utility model and thus design various embodiments with various modifications suitable for specific purposes.

Claims

1. A transmission shaft positioning device for composite fibers, comprising a telescopic transmission assembly (1), characterized in that: The telescopic transmission assembly (1) comprises a transmission shaft tube (101), a telescopic joint (102), a stop key (103) and a universal joint (104); the transmission shaft tube (101) is slidably provided with the telescopic joint (102), a stop key (103) is welded to the outer wall of the telescopic joint (102), and the ends of the transmission shaft tube (101) and the telescopic joint (102) are both connected to the universal joint (104).

2. A transmission shaft positioning device for composite fibers according to claim 1, characterized in that: The transmission shaft tube (101) is engaged with the key protrusion at the front end of the telescopic joint (102) through the internal key groove for transmission, and the circumferential height of the stop key (103) protruding from the telescopic joint (102) is greater than the diameter of the internal key groove of the transmission shaft tube (101).

3. The transmission shaft positioning device for composite fibers according to claim 1, characterized in that: The universal joint (104) is composed of front and rear yokes, and the universal joint (104) is rotatably matched with the internal cross shaft through a needle bearing.

4. The transmission shaft positioning device for composite fibers according to claim 1, characterized in that: The universal joints (104) at both the front and rear ends are externally connected to flanges (2), and the front end flange (2) is drivingly connected to the front shaft (3).

5. A transmission shaft positioning device for composite fibers according to claim 4, characterized in that: The front axle (3) is fixedly connected to the output end of the motor reduction box (4), and the motor reduction box (4) is composed of a servo motor and a reduction gear box.

6. A transmission shaft positioning device for composite fibers according to claim 4, characterized in that: The flange (2) at the rear end is drivingly connected to a rear shaft (5), and the output end of the rear shaft (5) is connected to a spinning pump body (6).

7. A transmission shaft positioning device for composite fibers according to claim 6, characterized in that: The spinning pump body (6) is drivingly connected to the universal joint (104) at the rear end of the telescopic joint (102) via a top screw (7).

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