Anti-derailing device for a crane

Abstract

The utility model discloses a crane anti -derailing device belongs to crane technical field, including installation cover and two auxiliary gyro wheel, installation cover installs on crane support foot, and the crane track wheel of crane support foot walks on the work type guide rail, and the below fixed mounting of installation cover has the base plate, and the top of base plate is provided with two notches, and two notches all are equipped with the movable block of slidable, and all are fixed and are inserted to have fixed axle on two movable blocks, and the bottom of two fixed axle all rotatable installation has the auxiliary gyro wheel, and two auxiliary gyro wheel respectively in work type guide rail vertical portion's both sides rolling, and the top of base plate and located two notches's both sides all fixed mounting has the rack plate, and the top of two fixed axle all is provided with with the rack plate of interlocking's limit block, the utility model solves the problem that the crane anti -derailing device of existing crane is inconvenient to install to the work type guide rail of different size after long -time use of auxiliary gyro wheel loose causes crane derailment.

Description

Technical Field

[0001] This utility model belongs to the field of crane technology, specifically relating to a device for preventing cranes from derailing. Background Technology

[0002] In large manufacturing enterprises, bridge cranes and gantry cranes are widely used. However, during actual operation, derailment and rail wear often occur when the crane's trolley and crane wheel are running on the rails. Once this happens, it can easily lead to a crane fall, posing a serious threat to equipment and personnel, and causing severe wear on the wheels. Due to these problems, the safe operation of the crane cannot be effectively guaranteed. Existing crane anti-derailment devices mainly include mounting plates with two auxiliary rollers underneath. These mounting plates are installed on the crane's support legs, and the two auxiliary rollers clamp the guide rail, allowing the crane to move stably along the guide rail and preventing the crane wheels from derailing. However, the connection between the two auxiliary rollers and the mounting plate is fixed by a bolt and nut assembly. Although this method is simple and convenient, the bolts and nuts are prone to loosening after long-term use. Once loosened, the bolts and nuts cannot effectively fix the two auxiliary rollers, and the two auxiliary rollers will not be able to effectively clamp the guide rail, thus losing their anti-derailment function and causing the crane to derail. Furthermore, the position of the two rollers in the existing crane anti-derailment device cannot be adjusted, making it inconvenient to install them on I-beam guide rails of different sizes. Utility Model Content

[0003] The problem solved by this utility model is to provide a crane anti-derailment device to solve the problems of auxiliary rollers loosening and causing crane derailment after long-term use of existing crane anti-derailment devices, and the inconvenience of installation on I-beam guide rails of different sizes.

[0004] To solve the above problems, the technical solution adopted by this utility model is as follows: It includes a mounting cover and two auxiliary rollers. The mounting cover is installed on the crane support leg, and the crane rail wheels of the crane support leg travel on an I-shaped guide rail. A base plate is fixedly installed below the mounting cover. Two slots are opened on the top of the base plate, and each slot contains a slidable moving block. A fixed shaft is inserted through and fixedly connected to each of the two moving blocks. An auxiliary roller is rotatably installed at the bottom end of each of the two fixed shafts. The two auxiliary rollers roll on both sides of the vertical part of the I-shaped guide rail. A rack plate is fixedly installed on the top of the base plate and on both sides of the two slots. A limiting block that engages with the rack plate is provided at the top of each of the two fixed shafts, so that the two auxiliary rollers will not shift when rolling on both sides of the vertical part of the I-shaped guide rail.

[0005] A more specific technical solution to the above technical solution may be as follows: the bottom of the limiting block is provided with a groove, the top of the limiting block is provided with a screw hole communicating with the groove, the top of the fixed shaft is provided with a screw groove, a bolt connected to the screw groove is inserted through the screw hole, the head of the bolt is stuck on the limiting block, the screw part of the bolt is tightened in the screw hole and the screw groove, a spring is provided between the moving block and the limiting block, the lower part of the spring is sleeved on the upper part of the fixed shaft, the upper end of the spring is against the groove, both ends of the bottom of the limiting block are provided with teeth, the two rows of teeth are respectively engaged with the two corresponding rack plates, under the elastic force of the spring, loosening the bolt can separate the teeth at the bottom of the limiting block from the rack plate at the top of the substrate, so that the position of the moving block in the groove can be adjusted, and tightening the bolt can make the teeth at the bottom of the limiting block re-engage with the rack plate at the top of the substrate.

[0006] Furthermore: positioning holes are provided at the four corners of the top of the movable block, and positioning rods are fixedly installed at the four corners of the bottom of the limiting block. The four positioning rods can be movably inserted into the four positioning holes respectively.

[0007] Furthermore, the inner wall of the slot is provided with sliding grooves on both sides, and the movable block is fixedly installed with sliders that are adapted to the sliding grooves on both sides, so that the movable block can slide in the slot.

[0008] Furthermore: a reinforcing plate is fixedly installed between the top of the substrate and the side wall of the mounting cover; a mounting plate is fixedly installed at the end of the reinforcing plate away from the mounting cover and located at the top of the substrate; a reflector is fixedly installed on the side of the mounting plate; the reinforcing plate can improve the stability of the mounting cover; and the reflector is used to enhance the warning effect.

[0009] Due to the adoption of the above technical solution, this utility model has the following beneficial effects compared with the prior art: by interlocking the limiting block and the rack plate of the base plate, there will be no loosening even after long-term use, which can prevent the auxiliary rollers from moving after installation and fixing. This makes it safer to guide the crane along the track when using this device; by separating the limiting block from the rack plate, the position of the moving block in the slot can be adjusted, thereby adjusting the distance between the two auxiliary rollers, which is convenient for installation on I-beam guide rails of various sizes. After adjusting the position of the auxiliary rollers, the limiting block can be re-interlocked onto the moving block. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0011] Figure 2This is a schematic diagram of the present invention and the connection between the substrate and the auxiliary roller.

[0012] Figure 3 This is a schematic diagram of the structure of the substrate of this utility model.

[0013] Figure 4 This is a schematic diagram of the connection between the limiting block and the fixed shaft of this utility model.

[0014] Figure 5 This is a schematic diagram of the structure of the limiting block of this utility model.

[0015] In the diagram: 1. Base plate; 2. Mounting cover; 3. Reinforcing plate; 4. Reflector; 5. Groove; 6. Moving block; 7. Fixed shaft; 8. Auxiliary roller; 9. Slide groove; 10. Slider; 11. Rack plate; 12. Limiting block; 13. Groove; 14. Screw hole; 15. Bolt; 16. Spring; 17. Positioning rod; 18. Positioning hole; 19. Screw groove; 20. Tooth; 21. I-shaped guide rail. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and examples:

[0017] like Figures 1 to 5The crane anti-derailment device shown includes a mounting cover 2 and two auxiliary rollers 8. The mounting cover 2 is installed on the crane support leg. The crane rail wheels of the crane support leg travel on the I-shaped guide rail 21. A base plate 1 is fixedly installed below the mounting cover 2. Two slots 5 are opened on the top of the base plate 1. Each slot 5 is provided with a sliding movable block 6. A fixed shaft 7 is inserted through and fixedly connected to each of the two movable blocks 6. The bottom ends of the two fixed shafts 7 are rotatably mounted with auxiliary rollers 8. The two auxiliary rollers 8 roll on both sides of the vertical part of the I-shaped guide rail 21. A rack plate 11 is fixedly installed on the top of the base plate 1 and on both sides of the two slots 5. The top ends of the two fixed shafts 7 are provided with limiting blocks 12 that engage with the rack plate 11, so that the two auxiliary rollers 8 will not be displaced when rolling on both sides of the vertical part of the I-shaped guide rail 21. The bottom of the limiting block 12 has a groove 13, and the top of the limiting block 12 has a screw hole 14 communicating with the groove 13. The top of the fixed shaft 7 has a screw groove 19. A bolt 15 connected to the screw groove 19 is inserted through the screw hole 14. The head of the bolt 15 is stuck on the limiting block 12, and the screw part of the bolt 15 is tightened in the screw hole 14 and the screw groove 19. A spring 16 is provided between the moving block 6 and the limiting block 12. The lower part of the spring 16 is sleeved on the upper part of the fixed shaft 7. The upper end of the 16 rests within the groove 13. Both ends of the bottom of the limiting block 12 are provided with teeth 20. The two rows of teeth 20 engage with the corresponding two rack plates 11. Under the elastic force of the spring 16, loosening the bolt 15 allows the teeth 20 at the bottom of the limiting block 12 to separate from the rack plate 11 at the top of the substrate 1, thus adjusting the position of the moving block 6 within the slot 5. Tightening the bolt 15 allows the teeth 20 at the bottom of the limiting block 12 to re-engage with the rack plate 11 at the top of the substrate 1. Positioning holes 18 are provided at the four corners of the top of the moving block 6, and positioning rods 17 are fixedly installed at the four corners of the bottom of the limiting block 12. The four positioning rods 17 can be movably inserted into the four positioning holes 18. Sliding grooves 9 are provided on both sides of the inner wall of the slot 5. Sliding blocks 10, compatible with the sliding grooves 9, are fixedly installed on both sides of the moving block 6, allowing the moving block 6 to slide within the slot 5. A reinforcing plate 3 is fixedly installed between the top of the substrate 1 and the side wall of the mounting cover 2. A mounting plate is fixedly installed at the end of the reinforcing plate 3 away from the mounting cover 2 and at the top of the substrate 1. A reflector 4 is fixedly installed on the side of the mounting plate. The reinforcing plate 3 can improve the stability of the mounting cover 2, and the reflector 4 is used to enhance the warning effect.

[0018] By loosening bolts 15, the teeth 20 at both ends of the bottom of the limiting block 12 are separated from the rack plate 11. Then, the position of the moving block 6 in the slot 5 can be adjusted, thereby adjusting the distance between the two auxiliary rollers 8. This facilitates the installation of the device onto the I-shaped guide rail 21. After adjusting the position of the auxiliary rollers 8, the limiting block 12 is re-aligned onto the moving block 6, so that the teeth 20 on both sides of the limiting block 12 re-engage with the corresponding rack plate 11. Then, the bolts 15 are tightened to re-engage the limiting block 12 with the fixed shaft 7. Through the mutual engagement of the limiting block 12 and the rack plate 11, the auxiliary rollers 8, after installation and fixation, will not move when rolling on both sides of the vertical part of the I-shaped guide rail 21. This makes the device safer when guiding the crane along the rail.

Claims

1. A crane anti-derailment device, comprising a mounting cover and two auxiliary rollers, characterized in that: A base plate is fixedly installed below the mounting cover. Two slots are opened on the top of the base plate. Each slot has a slidable movable block. A fixed shaft is inserted through and fixedly connected to each of the two movable blocks. An auxiliary roller is rotatably installed at the bottom of each of the two fixed shafts. A rack plate is fixedly installed on the top of the base plate and on both sides of the two slots. A limiting block that engages with the rack plate is provided at the top of each of the two fixed shafts.

2. The crane anti-derailment device according to claim 1, characterized in that: The bottom of the limiting block has a groove, and the top of the limiting block has a screw hole communicating with the groove. The top of the fixed shaft has a screw groove, and a bolt connected to the screw groove is inserted through the screw hole. A spring is provided between the moving block and the limiting block. The lower part of the spring is sleeved on the upper part of the fixed shaft, and the upper end of the spring rests in the groove. Both ends of the bottom of the limiting block are provided with teeth, and the two rows of teeth respectively engage with the two corresponding rack plates.

3. The crane anti-derailment device according to claim 2, characterized in that: The four corners at the top of the movable block are provided with positioning holes, and the four corners at the bottom of the limiting block are fixedly installed with positioning rods. The four positioning rods can be movably inserted into the four positioning holes respectively.

4. The crane anti-derailment device according to claim 3, characterized in that: The inner wall of the slot is provided with sliding grooves on both sides, and the movable block is fixedly installed with sliders that are adapted to the sliding grooves on both sides.

5. The crane anti-derailment device according to claim 4, characterized in that: A reinforcing plate is fixedly installed between the top of the substrate and the side wall of the mounting cover. A mounting plate is fixedly installed at the end of the reinforcing plate away from the mounting cover and located on the top of the substrate. A reflector is fixedly installed on the side of the mounting plate.

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