An auxiliary device for replacing the active trolley assembly of a bridge crane

Abstract

This utility model relates to an auxiliary device for replacing the active trolley assembly of a bridge crane, belonging to the technical field of bridge crane maintenance equipment. The technical solution is as follows: the clamp (1) includes two clamping arms, one of which is welded from two clamping plates, and the other clamping arm is a single clamping plate. The single clamping plate is clamped between the two clamping plates and connected together by a pin (3). One end of the two clamping arms forms a clamping opening that matches the outer contour of the track section, and the other end is fixed with a clamping plate (4). The two clamping plates (4) are respectively inserted into one side of the L-shaped screw (6) and each is provided with a clamping nut (5). The other side of the L-shaped screw (6) is rotatably connected to the bracket (7), and the bracket (7) is provided with an adjustment bolt (9) at the bottom. The beneficial effect of this utility model is that it can be used for cranes of different specifications and models and active trolley assemblies of different sizes, which facilitates the replacement of the active trolley assembly of the crane.

Description

Technical Field

[0001] This utility model relates to an auxiliary device for replacing the active trolley assembly of a bridge crane, belonging to the technical field of bridge crane maintenance equipment. Background Technology

[0002] The main trolley assembly of the overhead crane needs to be replaced entirely due to deformation, cracks, or other reasons. During the replacement process, the wheel joints on the drive end cause uneven weight distribution. Therefore, it is necessary to weld brackets onto the track beam below the wheel joints on-site to support the trolley assembly and allow it to be moved smoothly in and out of the track. Generally, metallurgical plants have a large number of overhead cranes of varying specifications and models, and the dimensions of the main trolley assemblies also differ. If a complete set of brackets were made for each type of trolley assembly, not only would the workload be enormous, but the brackets would also be shortened after welding and cutting, making them unusable. Utility Model Content

[0003] The purpose of this utility model is to provide an auxiliary device for replacing the active trolley assembly of a bridge crane, which can be used for cranes of different specifications and models and active trolley assemblies of different sizes, making it convenient to replace the active trolley assembly of the crane and solving the problems existing in the background art.

[0004] The technical solution of this utility model is: An auxiliary device for replacing the active trolley assembly of a bridge crane includes a clamp, clamping arms, a pin, clamping plates, clamping nuts, an L-shaped lead screw, a bracket, and an adjusting bolt. The clamp includes two clamping arms, one of which is welded from two clamping plates, and the other is a single clamping plate. The single clamping plate is clamped between the two clamping plates and connected together by a pin. One end of each clamping arm forms a clamping opening that matches the outer contour of the track section, and the other end is fixed with a clamping plate. The two clamping plates are respectively inserted into one side of the L-shaped lead screw and each is provided with a clamping nut. The other side of the L-shaped lead screw is rotatably connected to the bracket, and an adjusting bolt is provided under the bracket.

[0005] The L-shaped lead screw is rotatably connected to the bracket via a bushing.

[0006] The bushing is fixed on the bracket, and one end of the L-shaped lead screw is inserted into the bushing.

[0007] The clamping nut is threaded onto the L-shaped lead screw.

[0008] The bracket is equipped with a fixing nut that mates with the height adjustment bolt.

[0009] When replacing the active trolley unit using this utility model, place the bracket on the track beam below the wheel connector, adjust the height adjustment bolt at the bottom of the bracket to bring the bracket close to the wheel connector, clamp the two sets of clamps on the tracks at both ends of the active trolley unit respectively, leaving enough space in the middle for the left end of the trolley unit to move out, tighten the screw clamping nut to make the clamps firmly clamped on the track. After the entire auxiliary device is installed, remove the connecting shaft between the active trolley unit and the overhead crane body, use a jack to lift the overhead crane to separate the active trolley unit from the overhead crane body, and then move the active trolley unit smoothly out and in along the track.

[0010] The beneficial effects of this utility model are: it can be applied to cranes of different specifications and models and active trolley assemblies of different sizes, making it convenient to replace the active trolley assembly of the crane. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a front view of the utility model in use. Figure 3 This is a side view of the present invention in use. In the diagram: 1. Clamp 2. Clamp arm 3. Pin 4. Clamping plate 5. Clamping nut 6. L-shaped screw 7. Bracket 8. Shaft sleeve 9. Adjusting bolt 10. Fixing nut 10. Crane body 11. Active trolley assembly 12. Connecting shaft 13. Auxiliary device 14. Track 15. Track beam 16. Wheel connector 17. Detailed Implementation

[0012] The present invention will be further described below with reference to the accompanying drawings and examples.

[0013] See attached document Figure 1-3 An auxiliary device for replacing the active trolley assembly of a bridge crane includes a clamp 1, a clamping arm 2, a pin 3, a clamping plate 4, a clamping nut 5, an L-shaped lead screw 6, a bracket 7, and an adjusting bolt 9. The clamp 1 includes two clamping arms, one of which is welded from two clamping plates, and the other is a single clamping plate. The single clamping plate is clamped between the two clamping plates and connected together by the pin 3. One end of the two clamping arms forms a clamping opening that matches the outer contour of the track section, and the other end is fixed with a clamping plate 4. The two clamping plates 4 are respectively inserted into one side of the L-shaped lead screw 6 and each is provided with a clamping nut 5. The other side of the L-shaped lead screw 6 is rotatably connected to the bracket 7, and the bracket 7 is provided with an adjusting bolt 9 at the bottom.

[0014] In this embodiment, refer to the appendix Figure 1 The auxiliary device includes a clamp 1, a clamping arm 2, a pin 3, a clamping plate 4, a clamping nut 5, an L-shaped lead screw 6, a bracket 7, a bushing 8, an adjusting bolt 9, and a fixing nut 10, wherein: The clamp 1 is made of 10mm steel plate, cut and welded, and includes two clamping arms 2. One clamping arm is made of two clamping plates welded together, with an 11mm gap between the two clamping plates. The other clamping arm 2 is a single clamping plate, clamped between the two clamping arms, and connected to the two clamping arms 2 by a ∮12mm pin 3. Each clamping arm 2 has a clamping plate 4 with a ∮22mm hole welded to one end, which is used to insert an L-shaped lead screw 6 and achieve the clamping function through the clamping nut 5. The other end of the two clamping arms 2 forms a clamping jaw, the shape of which matches the outer contour of the rail cross section to ensure the stability of the rail clamping.

[0015] The L-type lead screw 6 has an M20*2.5 thread specification. Its long end is perpendicular to the short end, and the short end is precision machined as a ∮20 axis.

[0016] The bracket 7 is made of DN50 steel pipe and includes a crossbeam pipe and four support leg pipes. Each of the four support leg pipes has an M24*3 round fixing nut 10 welded to its bottom for installing the height adjustment bolt 9. A bushing 8 is welded to each of the two support leg pipes for insertion connection with the short end of the L-shaped lead screw 6.

[0017] The height adjustment bolt 9 has an M24*3 thread specification and its bottom end is machined into a disc shape to increase the force-bearing area and make it more stable.

[0018] See attached document Figure 2 , 3 When replacing the active trolley assembly, place the bracket 7 on the track beam 16, adjust the height adjustment bolt 9 at the bottom of the bracket 7 so that the bracket 7 is close to the wheel connector 17, and clamp the two sets of clamps 1 onto the tracks 15 at both ends of the active trolley assembly, leaving enough space in the middle for the active trolley assembly 2 to move out; connect the bracket 7 and the clamps 1 with the L-shaped lead screw 6, and tighten the clamping nut 5 of the L-shaped lead screw 6 to firmly clamp the clamps 1 onto the track 15. This completes the installation of the entire auxiliary device. After removing the connecting shaft 13 between the active trolley assembly 12 and the overhead crane body 11, use a jack to lift the overhead crane to separate the active trolley assembly 12 from the overhead crane body 11, and then smoothly move the active trolley assembly 12 out and in along the track 15. After the active trolley assembly is replaced, remove the auxiliary device for reuse.

Claims

1. An auxiliary device for replacing the active trolley assembly of a bridge crane, characterized in that: The device includes a clamp (1), a clamp arm (2), a pin (3), a clamp plate (4), a clamping nut (5), an L-shaped lead screw (6), a bracket (7), and an adjusting bolt (9). The clamp (1) includes two clamp arms, one of which is welded from two clamp plates, and the other is a single clamp plate. The single clamp plate is clamped between the two clamp plates and connected together by a pin (3). One end of the two clamp arms forms a clamping opening that matches the outer contour of the track section, and the other end is fixed with a clamp plate (4). The two clamp plates (4) are inserted into one side of the L-shaped lead screw (6) and each is provided with a clamping nut (5). The other side of the L-shaped lead screw (6) is rotatably connected to the bracket (7), and the bracket (7) is provided with an adjusting bolt (9) below it.

2. The auxiliary device for replacing the active trolley assembly of a bridge crane according to claim 1, characterized in that: The L-shaped lead screw (6) is rotatably connected to the bracket (7) via a bushing (8).

3. The auxiliary device for replacing the active trolley assembly of a bridge crane according to claim 2, characterized in that: The bushing (8) is fixed on the bracket (7), and one end of the L-shaped lead screw (6) is inserted into the bushing (8).

4. The auxiliary device for replacing the active trolley assembly of a bridge crane according to claim 1, characterized in that: The clamping nut (5) is threaded onto the L-shaped lead screw (6).

5. The auxiliary device for replacing the active trolley assembly of a bridge crane according to claim 1, characterized in that: The bracket (7) is provided with a fixing nut (10) that cooperates with the height adjustment bolt (9) below.

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