Gap-adjustable track joint of heavy-load crane
By setting up a compensation area at the crane rail joint and using high-strength bolt pairs, adaptive adjustment of the rail clearance is achieved, and the problems of unstable crane operation and equipment losses caused by temperature changes are solved, ensuring the smooth operation of the crane and the long life of the equipment.
Patent Information
- Application Number
- CN202421939175.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-12
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-08-12
AI Technical Summary
In the prior art, the gap between the crane rails will change too much due to thermal expansion and contraction when the temperature changes, resulting in unstable operation of the crane, easy wheels to be damaged, and the failure rate and equipment loss increase.
A rail joint with a high-load crane that can adjust the gap is designed. By setting a first compensation area and a second compensation area at the rail joint, combining a high-strength bolt pair and a high-temperature resistant rubber pad, adaptive adjustment of the rail gap is achieved.
It effectively solves the problem of track gap changes caused by temperature changes, ensures the smooth operation of the crane, reduces failure rate and equipment losses, and has significant effect in environments with large temperature differences and long lengths.
Smart Images
Figure CN222846319U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of rail jointing, and in particular relates to a rail joint with adjustable clearance for a heavy-duty crane. Background Art
[0002] With the continuous expansion of the scale of industrial industries in recent years, the application of cranes in my country's machinery manufacturing, construction and other fields has become more and more common. Among them, crane rails, as one of the important core components for crane operation and weight support, play an indispensable role in practical applications. In most cases, the consolidation between two crane rails is achieved through rail joints. Therefore, the shape and consolidation method of the rail joints determine the quality of rail consolidation, which in turn affects the operation of the crane. The current commonly used consolidation method between two rails is: place the flat cross-section parts of the two rails opposite each other, drill bolt holes on the sides of the two rails, clamp and fix them with rail clamps on both sides, and leave a certain gap between the two rails. This method can meet normal use conditions under short distance conditions, but now most factory buildings are hundreds of meters long and some even reach kilometers. When the use distance becomes longer, multiple rails are required for assembly and consolidation, so multiple rail joints will be left. Because the rails are greatly affected by temperature, they will expand and stretch linearly in the summer when the temperature is high, and shrink and shorten linearly in the winter when the temperature is low. Therefore, the gap left when the two rails are consolidated will vary greatly. When the gap is too large, the wheels of the crane will get stuck in the gap when a heavy-loaded crane passes through, and the impact and vibration will cause great damage to the wheels, which is not conducive to the smooth operation of the heavy-loaded crane. When the gap is too small, the length of the rail extended by heat is greater than the gap left, which will cause the two rails to be squeezed and deformed, increasing the failure rate and equipment loss of the heavy-loaded crane. Summary of the invention
[0003] The utility model aims to provide a rail joint with adjustable clearance for a heavy-duty crane, so as to solve the problems existing in the prior art.
[0004] The utility model adopts the following technical solution to solve the technical problem: a rail joint with adjustable clearance for a heavy-duty crane, comprising two rails, the rail ends are provided with butt joints, the two rails are placed opposite to each other and a first compensation area is provided between the butt joints of the two rails, the butt joints of the two rails are clamped by two clamping plates, and the two clamping plates are bolted to the two butt joints by high-strength bolt pairs.
[0005] Furthermore, at least one first bolt hole is provided on the butt joint, a long rail shoulder is provided on the rail on one side of the butt joint, and a short rail shoulder is provided on the rail on the other side of the butt joint. A second compensation area is formed between the short rail shoulder and a clamping plate, and the long rail shoulder abuts against another clamping plate. The lengths of the first compensation area and the second compensation area are the same.
[0006] Furthermore, the thickness of the splint is the same as that of the docking joint, and a second threaded hole and a strip hole are provided on the splint. The number of the second threaded holes and the strip holes is the same as the number of the first bolt holes, and the length of the strip hole is greater than the length of the first compensation zone.
[0007] Furthermore, the high-strength bolt pair bolts the two clamping plates to the two sides of the butt joint through the second bolt hole of one clamping plate, the first bolt hole of the butt joint, and the strip hole of the other clamping plate.
[0008] Furthermore, the height of the butt joint and the plywood is the same as the height of the rail. After the two butt joints and the two plywood are bolted together, the upper top surface of the butt joint is flush with the upper top surface of the rail. The upper top surfaces of the two plywood are flush with the upper top surface of the rail. After the two plywood and the two butt joints are bolted together, they form a rail joint, and the width of the upper top surface of the rail joint is the same as the width of the upper top surface of the rail.
[0009] Furthermore, high temperature resistant rubber pads are laid on the bottom of the plywood and the rails.
[0010] The utility model has the following beneficial effects:
[0011] 1. The utility model has a simple and reasonable structure and strong practicality. The first compensation area, the second compensation area and the strip holes can effectively meet the compensation requirements for the extreme expansion and contraction of the crane rails caused by large temperature changes and thermal expansion and contraction, and complete adaptive adjustment.
[0012] 2. The utility model has the advantages of simple processing, low cost, high force strength, etc., and can meet the use needs of heavy-duty cranes.
[0013] 3. The utility model has the characteristic of a large gap compensation area and can be used in an environment with a large temperature difference and in a factory with a large length.
[0014] 4. The utility model has the characteristics of convenient and intuitive connection, and is convenient for future maintenance, replacement and daily inspection. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the structure of the utility model from top view.
[0016] Figure 2 It is a structural schematic diagram of a butt joint of the utility model.
[0017] Figure 3 It is a schematic diagram of the structure of the splint of the utility model.
[0018] Among them: 1. Rail; 2. Butt joint; 3. Clamp; 4. First compensation area; 5. Second compensation area; 6. First bolt hole; 7. Second threaded hole; 8. Strip hole; 9. High-strength bolt pair; 10. Long rail shoulder; 11. Short rail shoulder; 12. High-temperature resistant rubber pad. DETAILED DESCRIPTION
[0019] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with specific embodiments and drawings. 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.
[0020] like Figure 1-3 As shown, a heavy-duty crane rail 1 gap-adjustable joint comprises two rails 1, each end of which is provided with a butt joint 2, the two rails 1 are placed opposite to each other and a first compensation area 4 is provided between the butt joints 2 of the two rails 1, the butt joints 2 of the two rails 1 are clamped by two clamping plates 3, and the two clamping plates 3 are bolted to the two butt joints 2 by a pair of high-strength bolts 9.
[0021] At least one first bolt hole 6 is provided on the butt joint 2, a long rail shoulder 10 is provided on the rail 1 on one side of the butt joint 2, and a short rail shoulder 11 is provided on the rail 1 on the other side of the butt joint 2. A second compensation area 5 is formed between the short rail shoulder 11 and one clamping plate 3, and the long rail shoulder 10 abuts against another clamping plate 3. The lengths of the first compensation area 4 and the second compensation area 5 are the same.
[0022] The thickness of the clamping plate 3 is the same as that of the docking joint 2 . The clamping plate 3 is provided with second threaded holes 7 and strip holes 8 . The number of the second threaded holes 7 and strip holes 8 is the same as that of the first bolt holes 6 . The length of the strip holes 8 is greater than the length of the first compensation zone 4 .
[0023] The high-strength bolt pair 9 bolts the two clamping plates 3 to the two sides of the butt joint 2 through the second bolt hole of one clamping plate 3 , the first bolt hole 6 of the butt joint 2 , and the strip hole 8 of the other clamping plate 3 .
[0024] The height of the butt joint 2 and the plywood 3 is the same as the height of the rail 1. After the two butt joints 2 and the two plywood 3 are bolted together, the upper top surface of the butt joint 2 is flush with the upper top surface of the rail 1, and the upper top surfaces of the two plywood 3 are flush with the upper top surface of the rail 1. After the two plywood 3 and the two butt joints 2 are bolted together, they form a joint of the rail 1, and the width of the upper top surface of the joint of the rail 1 is the same as the width of the upper top surface of the rail 1.
[0025] The bottom ends of the clamping plate 3 and the track 1 are both paved with high temperature resistant rubber pads 12 .
[0026] The working principle of the utility model is:
[0027] The first compensation area 4 is located between the joints 2 of the two rails 1, and the two second compensation areas 5 are located on both sides of the rail 1 and are staggered. This arrangement effectively ensures that at least two-thirds of the wheel tread of the heavy-duty crane is in contact with the surface of the rail 1 when the wheels pass through the compensation areas of the rail 1, thereby minimizing the bumps and impacts of the crane, thereby achieving smooth operation of the crane and reducing the failure rate and equipment loss.
[0028] When the temperature changes greatly or thermal expansion and contraction causes the gap between the rails 1 to change, the positions of the first compensation area 4, the second compensation area 5 and the high-strength bolt pair 9 in the strip hole 8 will also change accordingly, thereby compensating for the change in the gap between the rails 1, thereby performing adaptive adjustment of the change in the gap between the rails 1.
[0029] The above-described embodiments are merely descriptions of preferred implementations of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by ordinary persons in the art to the technical solution of the present invention shall fall within the scope of protection of the present invention.
[0030] The technology, shape and structure parts not described in detail in the present invention are all known technologies.
Claims
1. A rail joint with adjustable clearance for a heavy-duty crane, characterized in that: It comprises two rails, the ends of the rails are provided with butt joints, the two rails are placed opposite to each other and a first compensation area is provided between the butt joints of the two rails, the butt joints of the two rails are clamped by two clamping plates, and the two clamping plates are bolted to the two butt joints by high-strength bolt pairs.
2. The heavy-duty crane adjustable gap rail joint according to claim 1, characterized in that: The butt joint is provided with at least one first bolt hole, a long rail shoulder is provided on the rail on one side of the butt joint, a short rail shoulder is provided on the rail on the other side of the butt joint, a second compensation area is formed between the short rail shoulder and a clamping plate, the long rail shoulder abuts against another clamping plate, and the lengths of the first compensation area and the second compensation area are the same.
3. The heavy-duty crane adjustable gap rail joint according to claim 2, characterized in that: The thickness of the clamping plate is the same as that of the docking joint. The clamping plate is provided with second threaded holes and strip holes. The number of the second threaded holes and strip holes is the same as that of the first bolt holes. The length of the strip holes is greater than the length of the first compensation area.
4. The heavy-duty crane adjustable gap rail joint according to claim 3, characterized in that: The high-strength bolt pair bolts the two clamping plates to the two sides of the butt joint through the second bolt hole of one clamping plate, the first bolt hole of the butt joint and the strip hole of the other clamping plate.
5. The heavy-duty crane adjustable gap rail joint according to claim 4, characterized in that: The height of the butt joint and the clamping plate is the same as the height of the rail. After the two butt joints and the two clamping plates are bolted together, the upper top surface of the butt joint is flush with the upper top surface of the rail. The upper top surfaces of the two clamping plates are flush with the upper top surface of the rail. After the two clamping plates and the two butt joints are bolted together, they form a rail joint. The width of the upper top surface of the rail joint is the same as the width of the upper top surface of the rail.
6. The heavy-duty crane adjustable gap rail joint according to claim 5, characterized in that: The clamping plate and the bottom of the rail are both paved with high temperature resistant rubber pads.