Motor nut anti-loosening structure

Abstract

The utility model provides a motor nut anti-loosening structure which comprises a shaft sleeve, a spring, a pressing plate, a pressing screw, a motor nut, a pressing cover and a fixing screw, an output shaft of a motor is sleeved with the shaft sleeve, a gear is sleeved outside the shaft sleeve, the pressing plate and the end face of the shaft sleeve are oppositely arranged, and the spring is arranged between the pressing plate and the shaft sleeve in a pressing mode. A motor nut is in threaded connection with the upper portion of the pressing plate, a gland is arranged on the upper portion of the motor nut, a prism shaft end is arranged at the end of an output shaft of the motor, a corresponding polygonal hole is formed in the gland, and the polygonal hole is in butt joint with the prism shaft end. And the gland is locked and connected with the motor nut through a fixing screw. According to the anti-loosening motor nut, the prism structure is arranged at the shaft end, the gland is correspondingly arranged, the gland corresponds to the prism, the anti-rotating effect is achieved, and in addition, the running reliability of a motor is effectively improved through the spring.

Description

Technical Field

[0001] The utility model relates to an improvement on a motor fixing structure of a screw press, in particular to a motor nut anti-loosening structure. Background Art

[0002] The motor on the electric screw press is the main power output device. The power output by the motor drives the main shaft to rotate through the gear structure and forms an up and down reciprocating stroke and impact force. Therefore, the motor needs to rotate forward and reverse frequently, and the gear at the output end of the motor is directly fixed axially, and the nut that fixes it is mainly coaxially fixed. Therefore, after a long period of working vibration, the nut loosens and causes the gear to skew, affecting the normal power output and increasing the structural wear. Therefore, it is necessary to improve the nut fixing structure on the motor. Utility Model Content

[0003] The purpose of the utility model is to overcome the above-mentioned deficiencies in the prior art and to provide a motor nut anti-loosening structure.

[0004] The technical solution adopted by the utility model to solve the above problems is: the motor nut anti-loosening structure includes a sleeve, a spring, a pressure plate, a clamping screw, a motor nut, a pressure cover and a fixing screw, the output shaft of the motor is sleeved with the sleeve, and the gear is connected to the sleeve, the pressure plate and the sleeve end face are arranged oppositely and a spring is pressed between the two, the clamping screw passes through the pressure plate and is fastened to the sleeve end face, the upper part of the pressure plate is screwed with the motor nut, the upper part of the motor nut is provided with a pressure cover, the end of the output shaft of the motor is provided with a prismatic shaft end, the pressure cover is provided with a corresponding polygonal hole, the polygonal hole is butt-jointed with the prismatic shaft end, and the pressure cover and the motor nut are locked and connected by a fixing screw. The anti-loosening of the motor nut is mainly achieved by arranging a prismatic structure at the shaft end and correspondingly arranging a pressure cover, the pressure cover corresponds to the prism, and plays an anti-rotation role, the pressure cover is fixed to the motor nut, so that the motor nut cannot rotate, and in addition, the spring provides axial pressure on the motor nut, compresses the gap of the thread teeth, and also plays an anti-rotation role, effectively improving the reliability of the motor operation.

[0005] Furthermore, the prism shaft end is a rectangular cross section or a regular hexagonal cross section, and the corresponding polygonal hole is a rectangular hole or a regular hexagonal hole. The prism structure can adopt a variety of cross-sectional shapes, and rectangles and regular hexagons are more convenient to process, so they are preferred.

[0006] Furthermore, a fixing ring is formed on the end surface of the sleeve, the fixing ring is sunken in the end surface of the sleeve, and a fixing ring is also formed on the opposite surface of the pressure plate, and the two ends of the spring are restricted in the fixing ring. The fixing ring is used to position the spring, stabilize the direction of the elastic force of the spring, and realize the precise adjustment of the pressure of the spring.

[0007] Furthermore, a step body is formed on the upper surface of the motor nut, a corresponding groove is formed on the lower surface of the gland, and the pressure plate is arranged on the motor nut and fixedly connected. The step body is used to increase the contact surface between the gland and the motor nut, and has a positioning function, thereby improving the installation efficiency of the structure.

[0008] Furthermore, the outer diameter of the motor nut is smaller than the outer diameter of the shaft sleeve and the pressure plate, and the clamping screw is inserted through the part where the shaft sleeve and the pressure plate exceed the outer diameter, and the screw head of the clamping screw is located outside the motor nut. The press screw has the function of adjusting the spring pressure and needs to be adjusted during the operation of the equipment. Therefore, in order to avoid structural interference with the motor nut, it is set outward.

[0009] Compared with the prior art, the utility model has the following advantages and effects: the design is an improvement on the motor power output structure on an electric screw press, which mainly improves the anti-loosening ability of the motor nut, ensures that the pressure of the pressure spring is adjustable and stable, improves the stability of the motor power output, reduces structural wear, and increases the life of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structural comparison before and after improvement.

[0011] Figure 2 It is an enlarged schematic diagram of the improved structure.

[0012] In the figure: 1, bushing, 2, spring, 3, pressure plate, 4, clamping screw, 5, motor nut, 6, pressure cover, 7, fixing screw, 8, prismatic shaft end, 9, fixing ring, 10, step body. DETAILED DESCRIPTION

[0013] The present invention will be further described in detail below with reference to the accompanying drawings and through examples. The following examples are provided to explain the present invention, but the present invention is not limited to the following examples.

[0014] A motor nut anti-loosening structure, the motor nut anti-loosening structure includes a sleeve 1, a spring 2, a pressure plate 3, a clamping screw 4, a motor nut 5, a pressure cover 6 and a fixing screw 7. The output shaft of the motor is sleeved with the sleeve 1, and a gear is connected to the sleeve 1. The pressure plate 3 and the end face of the sleeve 1 are arranged opposite to each other and a spring 2 is pressed between the two. The clamping screw 4 passes through the pressure plate 3 and is fastened to the end face of the sleeve 1. The upper part of the pressure plate 3 is screwed with a motor nut 5, and the upper part of the motor nut 5 is provided with a pressure cover 6. The end of the output shaft of the motor is provided with a prismatic shaft end 8, and the pressure cover 6 is provided with a corresponding polygonal hole. The polygonal hole is connected to the prismatic shaft end 8, and the pressure cover 6 is locked and connected with the motor nut 5 by a fixing screw 7.

[0015] The prism shaft end 8 has a rectangular cross section or a regular hexagonal cross section, and the corresponding polygonal hole is a rectangular hole or a regular hexagonal hole.

[0016] The end surface of the sleeve 1 is formed with a fixing ring 9 , which is sunken into the end surface of the sleeve 1 . A fixing ring 9 is also formed on the opposite surface of the pressure plate 3 , and both ends of the spring 2 are confined in the fixing ring 9 .

[0017] The upper surface of the motor nut 5 is formed with a step body 10, and the lower surface of the pressure cover 6 is formed with a corresponding groove. The pressure plate 3 is arranged on the motor nut 5 and fixedly connected.

[0018] The outer diameter of the motor nut 5 is smaller than the outer diameters of the shaft sleeve 1 and the pressure plate 3 , and the clamping screw 4 is passed through the portion where the shaft sleeve 1 and the pressure plate 3 protrude, and the screw head of the clamping screw 4 is located outside the motor nut 5 .

[0019] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary rather than restrictive. The scope of the present invention is defined by the claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim involved.

[0020] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A motor nut anti-loosening structure, characterized in that: The motor nut anti-loosening structure comprises a shaft sleeve (1), a spring (2), a pressure plate (3), a clamping screw (4), a motor nut (5), a pressure cover (6) and a fixing screw (7). The output shaft of the motor is sleeved with the shaft sleeve (1), and a gear is connected to the outer surface of the shaft sleeve (1). The pressure plate (3) and the end surface of the shaft sleeve (1) are arranged opposite to each other and a spring (2) is pressed between the two. The clamping screw (4) passes through the pressure plate (3) and is fastened to the end surface of the shaft sleeve (1). The upper part of the pressure plate (3) is screwed with a motor nut (5). The upper part of the motor nut (5) is provided with a pressure cover (6). The end of the output shaft of the motor is provided with a prismatic shaft end (8). The pressure cover (6) is provided with a corresponding polygonal hole. The polygonal hole is butt-jointed with the prismatic shaft end (8). The pressure cover (6) and the motor nut (5) are locked and connected by a fixing screw (7).

2. The motor nut anti-loosening structure according to claim 1, characterized in that: The prism shaft end (8) has a rectangular cross section or a regular hexagonal cross section, and the corresponding polygonal hole is a rectangular hole or a regular hexagonal hole.

3. The motor nut anti-loosening structure according to claim 1, characterized in that: The end surface of the shaft sleeve (1) is formed with a fixing ring (9), which is sunken into the end surface of the shaft sleeve (1). A fixing ring (9) is also formed on the opposite surface of the pressure plate (3), and the two ends of the spring (2) are confined in the fixing ring (9).

4. The motor nut anti-loosening structure according to claim 1, characterized in that: The upper surface of the motor nut (5) is formed with a step body (10), and the lower surface of the pressure cover (6) is formed with a corresponding groove. The pressure plate (3) is arranged on the motor nut (5) and fixedly connected.

5. The motor nut anti-loosening structure according to claim 1, characterized in that: The outer diameter of the motor nut (5) is smaller than the outer diameters of the shaft sleeve (1) and the pressure plate (3); the clamping screw (4) is passed through the portion exceeding the shaft sleeve (1) and the pressure plate (3); and the screw head of the clamping screw (4) is located outside the motor nut (5).

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