Floating butt joint for current direct connection

Abstract

The utility model discloses a floating butt joint for direct current connection, which is characterized by comprising an air cylinder mounting plate (3), the front end of the air cylinder mounting plate (3) is connected with a driving air cylinder for driving a clamping jaw, and the rear end of the air cylinder mounting plate (3) is fixedly connected to a sliding block (7) capable of sliding up and down along a guide rail (8). The cylinder mounting plate (3) is vertically positioned between a pair of mounting seats (4) positioned on the fixed seat (1), and springs (5) are respectively lined between the upper end and the lower end of the cylinder mounting plate (3) and the corresponding mounting seats (4).

Description

Technical Field

[0001] The utility model relates to the technical field of motor stator winding-down testing, and particularly relates to a floating docking head structure for direct current connection. Background Art

[0002] When conducting a winding-down test on a motor stator, three-phase power supply is required to drive the stator. Generally, due to deformation during the manufacturing process, there are height differences among the three pins of an electronic stator. However, in this context, most of the current three-phase power supply docking modules of testing equipment use fixed pairs of docking jaws to make contact power supply with the pins. Since the driving cylinder is fixed, the floating distance of the docking jaws is limited, and effective contact power supply cannot be achieved for the pins of a motor stator with a large height difference. As Figure 1 shown in the connection structure of the existing driving cylinder and jaws, after being connected and fixed by connecting components such as bolts 23, a set of jaws 21 are respectively arranged at the front end of the driving cylinder 24. Due to the setting of the spring 22, the distance between the upper and lower jaws 21 can be adjusted to a certain extent, but the floating distance of the docking jaws is limited.

[0003] For the pins of some motor stators with low errors, only a single docking jaw makes contact, resulting in poor contact, which will also affect the test results. Therefore, for the docking power supply of some motor stators with large pin errors, a feasible and effective new structure needs to be studied. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to overcome the above deficiencies of the prior art, and provide a floating and effective docking structure for the three-phase power supply docking jaws of the pins of a motor stator with large errors, so as to be used as a floating docking head for direct current connection.

[0005] The technical problem to be solved can be implemented by the following technical solutions.

[0006] A floating docking head for direct current connection is characterized in that it includes a cylinder mounting plate (3), a driving cylinder for driving jaws is connected to the front end of the cylinder mounting plate (3), the rear end of the cylinder mounting plate (3) is fixedly connected to a slider (7) that can slide up and down along a guide rail (8), the cylinder mounting plate (3) is vertically limited between a pair of mounting seats (4) positioned on a fixed seat (1), and a spring (5) is respectively padded between the upper end and the lower end of the cylinder mounting plate (3) and the corresponding mounting seats (4).

[0007] Preferably, one end of the spring (5) extends into the counterbore (31) provided on the cylinder mounting plate (3), and the other end of the spring (5) extends into the through hole (41) provided on the corresponding mounting seat (4) and is limited in the through hole (41) by a spring adjusting screw (6); the rotary spring adjusting screw (6) is used to adjust the compression force of the spring (5).

[0008] Further, the guide rail (8) is positioned on a guide rail mounting plate (9).

[0009] Furthermore, the guide rail mounting plate (9) is positioned at the rear end of the side plate (11) constituting the fixed seat (1); the pair of mounting seats (4) are respectively positioned at the upper and lower corresponding ends of the side plate (11).

[0010] For the floating docking head structure for direct current connection adopting the above technical solution, while keeping the overall quality of the docking module not much different, the floating amount of the docking jaws is increased. The sufficient contact between the docking jaws and the pins of the motor stator improves the power supply safety and reduces the risk of affecting the test results due to poor docking. Secondly, the floating of the driving cylinder can automatically adjust the electronic stator pins at any height to the same horizontal plane, and is no longer affected by the large errors of the electronic stator pins. Description of the Drawings

[0011] Figure 1 Schematic diagram of the connection structure of the existing driving cylinder and the jaws;

[0012] Figure 2 Stereo assembly drawing structure of the floating docking head of the present utility model;

[0013] Figure 3 For Figure 2 the structure of the driving cylinder assembly with jaws in;

[0014] Figure 4 For Figure 2 the schematic assembly structure of some components in;

[0015] Figure 5 Schematic side view structure of the floating docking head of the present utility model;

[0016] Figure 6 Schematic structure of the floating docking head of the present utility model for docking three pins;

[0017] Wherein, Figure 1 、 Figure 3 and Figure 4 the gray color blocks in represent the section or cut surface;

[0018] In the figure:

[0019] 1. Fixed seat; 11. Side plate; 111. Connecting hole; 112. Side edge;

[0020] 2. Driving cylinder assembly;

[0021] 3. Cylinder mounting plate; 31. Counterbore;

[0022] 4. Mounting seat; 41. Through hole; 42. Connecting hole; 43. Connecting screw;

[0023] 5. Spring; 6. Spring adjusting screw; 7. Slide block; 8. Guide rail;

[0024] 9. Guide rail mounting plate; 91. Positioning screw;

[0025] 21. Jaw; 22. Spring; 23. Bolt; 24. Driving cylinder; Detailed implementation manner

[0026] The following further elaborates on the detailed implementation manner of the present utility model in conjunction with the attached drawings.

[0027] Based on the fact that when using the same driving cylinder, the floating amount of the docking jaw is affected by the stroke of the fixed driving cylinder. The present utility model changes the driving cylinder into a floating structure, so that the docking jaw will also float along with the floating of the driving cylinder, and thus will not be affected by the stroke of the driving cylinder. Further, the driving cylinder can be floated to the plane where the pins of the motor stator are located by the clamping force of the driving cylinder, and the paired docking jaws can contact and clamp from both sides of the pins of the motor stator.

[0028] Refer to Figures 2 to 6 , the fixed seat 1 is the installation base of the floating docking head of the present utility model. The fixed seat 1 includes side plates 11 on both sides. The upper and lower mounting seats 4 are fixedly positioned in the connecting holes 111 on the side plates 11 through the connecting holes 42 provided thereon and the connection of the connecting screws 43. That is, the upper mounting seat 4 is bridged in the corresponding connecting hole 111 on the upper side of the side plate 11 through the corresponding connecting hole 42 and its connecting screw 43. Similarly, the lower mounting seat 4 is bridged in the corresponding connecting hole on the lower side of the side plate 11. The upper and lower mounting seats 4 are arranged correspondingly.

[0029] The guide rail mounting plate 9 is positioned in the corresponding positioning holes of the side edges 112 of the two side plates 11 through the positioning screws 91 at both ends. The guide rail 8 is vertically installed on the guide rail mounting plate 9. The slide block 7 is clamped on the guide rail 8 and can slide up and down along it. That is, after the slide block 7 and the guide rail 8 are assembled, they are installed on the guide rail mounting plate 9.

[0030] The driving cylinder assembly 2 with jaws is fixedly connected to the slide block 7 through the cylinder mounting plate. It can be seen therefrom that the driving cylinder assembly 2 can slide on the guide rail 8 together with the slide block 7.

[0031] The mounting base 4 is provided with a through hole 41 through which the spring 5 can pass, and the cylinder mounting plate 3 is provided with a counterbore 31 for installing the spring 5 (as Figure 4 and Figure 6 ). By rotating the spring adjustment screw 6, the compression force of the spring 5 (the stiffness of the spring is kept at a relatively small value) is adjusted so that the driving cylinder assembly 2 with jaws is in the theoretical middle position after sliding up and down on the guide rail 8. At this time, if the driving cylinder drives the jaws to clamp the pins of the motor stator, due to a certain error in the pin height, only one end of the jaws contacts the pins of the motor stator. At this time, the force of the driving cylinder is much greater than the force of the floating spring (i.e., the spring 5), and the driving cylinder will make the center plane of the motor stator pins and the center plane of the driving cylinder lie in the same plane through the clamping force, and the driving cylinder will move to a relatively force-balanced position on the guide rail, thereby realizing the floating effect of the jaws. Refer to Figure 5 . The figure shows the difference between the two lines of the theoretical position center and the driving cylinder center.

[0032] The above is described by selecting one of the three identical parallel jaw assemblies. As Figure 6 shown, three such springs can be arranged between the upper and lower mounting bases 4 to control the corresponding cylinder mounting plate and its driving cylinder assembly, thereby realizing the setting of the floating docking head for docking three pins.

[0033] The floating docking head for direct current connection adopting the above technical solution has the following advantages and characteristics:

[0034] 1. Under the same driving cylinder stroke, the designed floating amount of the floating driving cylinder is much larger than that of the fixed driving cylinder;

[0035] 2. Parameters such as the contact area and clamping force of the jaws on the pins of the electronic stator are more stable, improving the contact safety;

[0036] 3. The front end of the driving cylinder of the whole mechanism is more concise and convenient, occupying less space.

Claims

1. A floating butt joint for direct current connection, characterized in that: The invention comprises a cylinder mounting plate (3), the front end of which is connected to a driving cylinder for driving a clamping jaw, the rear end of which is fixedly connected to a slider (7) which can slide up and down along a guide rail (8), the upper and lower limits of the cylinder mounting plate (3) being located between a pair of mounting seats (4) positioned on a fixed seat (1), and a spring (5) being respectively provided between the upper and lower ends of the cylinder mounting plate (3) and the corresponding mounting seats (4).

2. The floating butt joint for current direct connection according to claim 1, characterized in that: One end of the spring (5) extends into a countersunk hole (31) provided on the cylinder mounting plate (3), and the other end of the spring (5) extends into a through hole (41) provided on the corresponding mounting seat (4) and is limited in the through hole (41) by a spring adjustment screw (6).

3. The floating butt joint for current direct connection according to claim 1, characterized in that: The guide rail (8) is positioned on a guide rail mounting plate (9).

4. The floating butt joint for direct current connection according to claim 3, characterized in that: The guide rail mounting plate (9) is positioned at the rear end of the side plate (11) constituting the fixing seat (1); and the pair of mounting seats (4) are respectively positioned at the upper and lower corresponding ends of the side plate (11).

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