Auxiliary device for replacing Azaldo frequency converter

Abstract

The utility model discloses an auxiliary device for replacing an Ansaldo frequency converter, which belongs to the field of steel rolling production equipment and comprises a support plate fixed on a lifting truck table board, and fixing mechanisms are respectively arranged on two sides of the top surface of the support plate. The fixing mechanism comprises a lower rail fixed to the table top of the lift truck, an upper rail is fixedly arranged on the top face of the lower rail, and a C-shaped containing cavity is defined by the lower rail and the upper rail. Positioning assemblies are arranged at the two ends of the lower rail, each positioning assembly comprises a positioning shaft sleeve fixedly connected to one end of the lower rail, and a positioning plate is movably connected into each positioning shaft sleeve; when the positioning plate is in a vertical state, the bottom wheel of the Azaldo frequency converter is fixed, and when the positioning plate is in a horizontal state, the fixing of the bottom wheel of the Azaldo frequency converter is relieved; the device has the beneficial effects of efficient fixing and releasing, high stability, convenience in operation, compact structure, high universality and the like, and has important significance in improving the efficiency and safety of frequency converter replacement work.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel rolling production equipment and relates to an auxiliary device for replacing an Ansaldo frequency converter. Background Art

[0002] Ansaldo inverters are widely used in transmission systems of steel rolling mills. Some high-power inverters, such as the SVTL series inverters with capacities of 840KW, 1200KW, 1400KW and above, are heavy and tall in appearance. Due to factors such as weight and height, a large number of people are required to lift and install them during replacement. Even using a lift vehicle to get the inverter onto the track is difficult.

[0003] According to the actual needs on site, an auxiliary replacement tool is designed and fixed on the table of the lifting vehicle. The bottom wheel of the Ansaldo inverter is then fixed in the auxiliary replacement tool. After the auxiliary replacement tool is fixed, it is convenient for the lifting vehicle to drive the Ansaldo inverter to move and put it into place, thereby improving the replacement efficiency of the inverter. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model provides an auxiliary device for replacing an Ansaldo frequency converter.

[0005] The utility model is implemented as follows: an auxiliary device for replacing an Ansaldo inverter comprises a support plate fixed on a lifting vehicle platform, wherein both sides of the top surface of the support plate are respectively provided with Ansaldo inverter bottom wheel fixing mechanisms; the fixing mechanism comprises a lower track fixed on the lifting vehicle platform, an upper track is fixedly provided on the top surface of the lower track, the lower track and the upper track are combined to form a C-shaped accommodating cavity, and the C-shaped accommodating cavity is used to place the Ansaldo inverter bottom wheel; positioning components are provided at both ends of the lower track, the positioning component comprises a positioning sleeve fixedly connected to one end of the lower track, and a positioning plate is movably connected in the positioning sleeve; the positioning plate is in an upright state to fix the Ansaldo inverter bottom wheel, and the positioning plate is in a horizontal state to release the fixation of the Ansaldo inverter bottom wheel.

[0006] Furthermore, the positioning plate includes a plate body, one end of which is extended with two sections of connecting ribs, the other end of which is fixedly connected with a connecting shaft, and the connecting shaft is rotatably connected in the positioning sleeve.

[0007] Furthermore, the positioning sleeve is configured as a tubular structure, and the outer wall is axially provided with two notches corresponding to the connecting ribs.

[0008] Furthermore, the notch includes an open slot and a fixed slot that share a side wall on one side and are axially superimposed, the central angle between the two side walls of the open slot is 90 to 100 degrees, and the central angle between the two side walls of the fixed slot is 20 to 30 degrees.

[0009] Furthermore, when the positioning plate is in an upright state, the connecting rib is clamped in the fixed slot; when the positioning plate is in a horizontal state, the connecting rib is located in the open slot and is supported by the other side wall of the open slot, so that the positioning plate remains in a horizontal state.

[0010] Furthermore, the upper rail includes an upper connecting portion at the bottom, which is used to be fixedly connected to the lower rail; and an upper groove portion formed by bending the other end of the upper connecting portion vertically upward, then bending toward the center of the support plate, and then bending vertically downward.

[0011] Furthermore, the lower rail includes a lower connecting portion, which is used to be fixedly connected to the support plate; and a lower groove portion formed by the other end of the lower connecting portion being vertically bent upward and enclosed with the upper rail.

[0012] Furthermore, the upper groove portion and the lower groove portion enclose to form a C-shaped accommodating cavity.

[0013] Furthermore, the width of the lower connecting portion is greater than the width of the upper connecting portion, and the difference in width between the lower connecting portion and the upper connecting portion is equal to the width of the upper groove portion.

[0014] The utility model has the following advantages and technical effects:

[0015] 1. Efficient fixing and releasing: The C-shaped housing design can effectively fix the bottom wheels of the Ansaldo inverter, ensuring that the inverter will not move or tip over during transportation or maintenance. At the same time, the design of the positioning component, especially the vertical and horizontal state switching of the positioning plate, can easily fix and release the bottom wheels of the inverter, improving work efficiency.

[0016] 2. Strong stability: The positioning plate is movably connected to the positioning sleeve through the connecting shaft, and the structure is stable and reliable. When the positioning plate is in the vertical state, the bottom wheel of the inverter can be firmly fixed by the connection between the connecting rib and the fixed slot; when it is in the horizontal state, the connecting rib is located in the open slot and supported by the other side wall of the open slot, ensuring that the positioning plate is in a horizontal position, which is convenient for the rolling of the inverter roller.

[0017] 3. Easy operation: The positioning sleeve with tubular structure and the notched design make it easy for the positioning plate to switch between the vertical and horizontal states, which is easy to operate. At the same time, the design of open slot and fixed slot allows the connecting rib to smoothly enter and exit the slot, which improves the smoothness of operation.

[0018] 4. Compact structure: The design of the upper and lower rails makes the entire auxiliary device compact and does not take up too much space. At the same time, the cooperation of the upper and lower grooves allows the inverter bottom wheel to be firmly fixed in the C-shaped accommodation cavity, enhancing the overall stability.

[0019] 5. Strong versatility: Since the auxiliary device adopts modular design, it can adapt to Ansaldo inverters of different models and specifications and has strong versatility.

[0020] In summary, the device has the beneficial effects of efficient fixing and releasing, strong stability, convenient operation, compact structure and strong versatility, and is of great significance for improving the efficiency and safety of inverter replacement work. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure provided by an embodiment of the utility model;

[0022] Figure 2 It is a schematic diagram of the overall structure of the positioning assembly provided by the embodiment of the utility model in a fixed state;

[0023] Figure 3 It is a schematic diagram of the overall structure of the positioning assembly provided by the embodiment of the utility model in an open state;

[0024] Figure 4 It is a schematic diagram of a positioning assembly provided by an embodiment of the utility model in a fixed state;

[0025] Figure 5 is a schematic diagram of a positioning assembly provided by an embodiment of the utility model in an open state;

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the positioning sleeve provided by the embodiment of the utility model;

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of the positioning plate provided in the embodiment of the utility model.

[0028] In the figure: 1. upper track; 11. upper connecting part; 12. upper groove part; 2. lower track; 21. lower connecting part; 22. lower groove part; 3. support plate; 4. positioning assembly; 5. positioning plate; 51. plate body; 52. connecting rib; 53. connecting shaft; 6. positioning sleeve; 61. open slot; 62. fixed slot; 7. fixing mechanism. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments below. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0030] See also Figures 1 to 7 An auxiliary device for replacing an Ansaldo inverter comprises a support plate 3 fixed on a lifting vehicle table, wherein the four corners of the support plate 3 are fixedly connected to the lifting vehicle table by bolts.

[0031] Fixing mechanisms 7 for fixing the bottom wheel of the Ansaldo inverter are respectively arranged on both sides of the top surface of the support plate 3; the fixing mechanism 7 includes a lower track 2, and the lower track 2 includes a lower connecting portion 21, and the lower connecting portion 21 is bolted to the support plate 3; the other end of the lower connecting portion 21 is bent upward by 90 degrees, and the bending part of the lower connecting portion 21 and the upper track 1 enclose a lower groove portion 22.

[0032] The upper rail 1 is bolted to the top surface of the lower connecting part 21, and the upper rail 1 includes an upper connecting part 11 at the bottom, and the upper connecting part 11 is used to be fixedly connected to the lower connecting part 21; the width of the upper connecting part 11 is smaller than the width of the lower connecting part 21, and after one end of the upper connecting part 11 is aligned and fixed with the lower connecting part 21, the space at the other end forms a lower groove part 22.

[0033] The other end of the upper connecting portion 11 is bent vertically upward, then bent horizontally toward the center of the support plate 3, and finally bent vertically downward to form an upper groove portion 12; the upper groove portion 12 corresponds to the lower groove portion 22, and is enclosed to form a C-shaped accommodating cavity, which is used to accommodate the bottom wheel of the Ansaldo inverter.

[0034] Positioning components 4 are respectively provided at both ends of the lower track 2, and the positioning component 4 includes a positioning sleeve 6 welded to one end of the lower track 2, and a positioning plate 5 is movably connected inside the positioning sleeve 6; when the positioning plate 5 is in an upright state, the bottom wheel of the Ansaldo inverter is fixed, and when the positioning plate 5 is in a horizontal state, the bottom wheel of the Ansaldo inverter is released.

[0035] The positioning plate 5 includes a plate body 51 , one end of the plate body 51 is welded with two sections of connecting ribs 52 , the other end of the connecting ribs 52 is welded with a connecting shaft 53 , and the connecting shaft 53 is rotatably connected to the positioning sleeve 6 .

[0036] The positioning sleeve 6 is configured as a tubular structure, and the tube wall is axially provided with two notches corresponding to the connecting ribs 52 respectively.

[0037] The notch includes an open slot 61 and a fixed slot 62, the side walls of one side of the open slot 61 and the fixed slot 62 are a common side wall structure, and the open slot 61 and the fixed slot 62 are axially overlapped along the positioning sleeve 6; the central angle between the two side walls of the open slot 61 is 90 to 100 degrees, and the central angle between the two side walls of the fixed slot 62 is 20 to 30 degrees.

[0038] When the connecting rib 52 is engaged in the fixed slot 62 , the positioning plate 5 is in an upright state; when the connecting rib 52 is located in the open slot 61 , the positioning plate 5 is supported by the other side wall of the open slot 61 and is in a horizontal state.

[0039] The following describes the installation and use process of this utility model:

[0040] First, use a 2mm thick steel plate to cut the upper rail 1, the lower rail 2 and the support plate 3, and bend the cut steel plate to form the upper rail 1 and the lower rail 2. The upper rail 1, the lower rail 2 and the support plate 3 are respectively punched and bolted together;

[0041] Then assemble the positioning sleeve 6, cut two groups of open slots 61 and fixed slots 62 on the positioning sleeve 6 at positions corresponding to the connecting ribs 52, and cut the sleeve tube wall between the fixed slots 62 on one side and the open slots 61 on the other side for spare use; insert the connecting shaft 53 into the positioning sleeve 6, and place the connecting ribs 52 at the open slots 61, and then weld the cut spare tube wall back to the original place, and the assembly of the positioning assembly 4 is completed;

[0042] Finally, the positioning components 4 are welded to the two ends of the upper rail respectively.

[0043] When the Ansaldo inverter needs to be replaced, first fix the device with bolts on the lifting vehicle platform, push the plate body 51 toward the open slot 61 side, and rotate the plate body 51 to keep it horizontal with the horizontal plane; then push the Ansaldo inverter to make the bottom wheel roll into the C-shaped accommodating cavity formed by the upper groove portion 12 and the lower groove portion 22; rotate the plate body 51 again to make the plate body 51 in a vertical state, and then push the plate body 51 toward the fixed slot 62 to make the connecting shaft 51 engaged in the fixed slot 62. The plate body 51 remains in a vertical state to prevent the bottom wheel of the Ansaldo inverter from rolling out of the fixing mechanism 7, causing the Ansaldo inverter to slide and tip over, affecting the replacement efficiency.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An auxiliary device for replacing an Ansaldo frequency converter, comprising a support plate (3) fixed on a lifting vehicle table, characterized in that: Ansaldo inverter bottom wheel fixing mechanisms (7) are respectively arranged on both sides of the top surface of the support plate (3); The fixing mechanism (7) comprises a lower track (2) fixed on the lifting vehicle platform, an upper track (1) is fixedly arranged on the top surface of the lower track (2), the lower track (2) and the upper track (1) are enclosed to form a C-shaped accommodating cavity, and the C-shaped accommodating cavity is used to place the bottom wheel of the Ansaldo inverter; Positioning assemblies (4) are provided at both ends of the lower rail (2), and the positioning assembly (4) comprises a positioning sleeve (6) fixedly connected to one end of the lower rail (2), and a positioning plate (5) is movably connected inside the positioning sleeve (6); when the positioning plate (5) is in an upright state, the bottom wheel of the Ansaldo inverter is fixed, and when the positioning plate (5) is in a horizontal state, the bottom wheel of the Ansaldo inverter is released from being fixed.

2. The auxiliary device for replacing an Ansaldo inverter according to claim 1, characterized in that: The positioning plate (5) comprises a plate body (51), one end of which is extended with two sections of connecting ribs (52), the other end of which is fixedly connected with a connecting shaft (53), and the connecting shaft (53) is rotatably connected to the positioning sleeve (6).

3. The auxiliary device for replacing an Ansaldo inverter according to claim 2, characterized in that: The positioning sleeve (6) is configured as a tubular structure, and the outer wall is provided with two notches corresponding to the connecting ribs (52) along the axial direction.

4. The auxiliary device for replacing an Ansaldo inverter according to claim 3, characterized in that: The notch comprises an open slot (61) and a fixed slot (62) which share a side wall on one side and are superimposed along the axial direction, the central angle between the two side walls of the open slot (61) being 90 to 100 degrees, and the central angle between the two side walls of the fixed slot (62) being 20 to 30 degrees.

5. The auxiliary device for replacing an Ansaldo inverter according to claim 4, characterized in that: When the positioning plate (5) is in an upright state, the connecting rib (52) is engaged in the fixed slot (62); when the positioning plate (5) is in a horizontal state, the connecting rib (52) is located in the open slot (61), and the connecting rib (52) is supported by the other side wall of the open slot (61), so that the positioning plate (5) remains in a horizontal state.

6. The auxiliary device for replacing an Ansaldo inverter according to claim 1, characterized in that: The upper rail (1) comprises an upper connecting portion (11) at the bottom, the upper connecting portion (11) being used for fixed connection with the lower rail (2); and an upper groove portion (12) formed by bending the other end of the upper connecting portion (11) vertically upward, then bending toward the center of the support plate (3), and then bending vertically downward.

7. The auxiliary device for replacing an Ansaldo inverter according to claim 6, characterized in that: The lower rail (2) comprises a lower connecting portion (21) which is used for fixed connection with the support plate (3); and a lower groove portion (22) formed by the other end of the lower connecting portion (21) being vertically bent upward and enclosed with the upper rail (1).

8. The auxiliary device for replacing an Ansaldo inverter according to claim 7, characterized in that: The upper groove portion (12) and the lower groove portion (22) are enclosed to form a C-shaped accommodation cavity.

9. The auxiliary device for replacing an Ansaldo inverter according to claim 8, characterized in that: The width of the lower connecting portion (21) is greater than the width of the upper connecting portion (11), and the difference in width between the lower connecting portion (21) and the upper connecting portion (11) is equal to the width of the upper groove portion (12).

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