Steel-aluminum composite rail punching and fixing tool
By designing a drilling and fixing tool for steel-aluminum composite rails, and using limit blocks and drill bits for accurate positioning and drilling, the problem of inaccurate manual line drawing and drilling in existing technologies has been solved, thus improving construction efficiency and accuracy.
Patent Information
- Application Number
- CN202521420020.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-08
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-07-08
AI Technical Summary
In existing technologies, steel-aluminum composite rails require manual marking and drilling after being cut on-site, resulting in low accuracy of drilling positions and low work efficiency, which affects the construction progress.
Design a drilling and fixing tool for steel-aluminum composite rails, including calipers, support devices, positioning devices, and limit blocks. Drilling is performed through holes on the limit blocks to ensure accurate and efficient hole positioning.
It improves the accuracy and efficiency of drilling holes in steel-aluminum composite rails, reduces dimensional errors caused by manual marking and drilling on the construction site, and maintains the consistency of hole positions.
Smart Images
Figure CN224678460U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of railway transportation equipment, specifically relating to a drilling and fixing tool for steel-aluminum composite rails. Background Technology
[0002] The contact rail system is a device used in subway and urban rail transit systems to transmit electrical energy to electric traction vehicles. It conducts electrical energy from the power supply system to the train through contact with the train's current collector shoes, thereby driving the train.
[0003] The contact rail system mainly consists of steel-aluminum composite rails, expansion joints, end elbows, ordinary joints, cable connection plates, and insulation support devices. Steel-aluminum composite rails are connected and fixed to each other using ordinary joints. Each ordinary joint includes two fixing plates and four sets of fasteners. The fixing plates are respectively clipped onto both sides of the rail web of the two steel-aluminum composite rails to be connected. The fasteners pass through the fixing plates and the steel-aluminum composite rails, thus securing the two rails together. While the manufacturer pre-drills bolt holes at both ends of the steel-aluminum composite rails at the factory, the rails are often cut to different lengths according to site conditions before being connected. This necessitates re-drilling holes in the rail webs of the cut rails on site. This is typically done manually by marking lines and drilling, a method that is not only inaccurate in drilling positions but also inefficient, impacting construction progress. Summary of the Invention
[0004] This invention addresses the shortcomings of existing technologies by proposing a drilling and fixing tool for steel-aluminum composite rails. By installing this device on the web of the steel-aluminum composite rail, there is no need to manually draw lines; the drill bit can be used directly to drill through the holes on the limiting block, which improves both drilling accuracy and work efficiency.
[0005] A drilling and fixing tool for steel-aluminum composite rails is characterized by the following: the structure includes a clamp 1, a support device 2, a positioning device 3, a limiting block 3-1, and a bolt fastener 4. One end of the clamp 1 is pressed against the web of the steel-aluminum composite rail, and the other end is connected to one side of the support device 2 through the bolt fastener 4. The upper part of the support device 2 is pressed against the top or bottom of the steel-aluminum composite rail. The other side of the support device 2 is connected to one end of the positioning device 3 through the bolt fastener 4. The other end of the positioning device 3 is clamped at the web of the steel-aluminum composite rail.
[0006] One end of the positioning device 3 for drilling and fixing tools for steel-aluminum composite rails is welded with a limiting block 3-1 that matches the groove of the rail waist of the steel-aluminum composite rail. Through holes are machined on the limiting block 3-1. The size and number of these through holes are consistent with the size and number of holes that need to be drilled on the rail waist of the steel-aluminum composite rail at the construction site.
[0007] The beneficial effects of this utility model are as follows: This utility model provides a drilling and fixing device for steel-aluminum composite rails. By using calipers to fix the limiting block in the positioning device to the rail web of the steel-aluminum composite rail, and using a drill bit to drill holes in the rail web of the steel-aluminum composite rail through the through hole on the limiting block, the use of this drilling and fixing device reduces the dimensional errors caused by manual marking and drilling on the construction site, maintains the consistency of drilling, and improves the accuracy and efficiency of drilling on site. Attached Figure Description
[0008] Figure 1 This is a front view of a steel-aluminum composite rail drilling and fixing tool according to the present invention.
[0009] Figure 2 This is a diagram of a caliper for drilling and fixing steel-aluminum composite rails according to this utility model.
[0010] Figure 3 This is a diagram of a support device for a steel-aluminum composite rail drilling and fixing tool according to the present invention.
[0011] Figure 4 This is a diagram of a positioning device for a steel-aluminum composite rail drilling and fixing tool according to the present invention.
[0012] In the diagram, 1-caliper, 2-support device, 3-positioning device, 3-1-limiting block, 4-bolt fastener. Detailed Implementation
[0013] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0014] Reference Figure 1-4 This utility model provides a technical solution: a drilling and fixing tool for steel-aluminum composite rails, the structure of which includes: a caliper 1, a support device 2, a positioning device 3, a limiting block 3-1, and bolt fasteners 4. One end of the caliper 1 is pressed against the rail web of the steel-aluminum composite rail, and the other end is connected to one side of the support device 2 through the bolt fasteners 4. The upper part of the support device 2 is pressed against the top or bottom of the steel-aluminum composite rail. The other side of the support device 2 is connected to one end of the positioning device 3 through the bolt fasteners 4. The other end of the positioning device 3 is welded with a limiting block 3-1 that matches the groove of the rail web of the steel-aluminum composite rail. The limiting block 3-1 is locked at the rail web of the steel-aluminum composite rail. Through holes are machined on the limiting block 3-1. The size and number of these through holes are consistent with the size and number of holes to be drilled on the rail web of the steel-aluminum composite rail at the construction site.
[0015] The positioning device 3 fixes the limiting block 3-1 in the positioning device 3 to the web of the steel-aluminum composite rail by using caliper 1. The drill bit is used to drill holes in the web of the steel-aluminum composite rail through the through hole on the limiting block. The use of this drilling and fixing device reduces the dimensional error caused by manual marking and drilling on the construction site, maintains the consistency of drilling, and improves the accuracy and efficiency of drilling on site.
[0016] The above provides a detailed description of the steel-aluminum composite rail drilling and fixing tool provided by this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. These examples are merely for the purpose of helping to understand the method and core idea of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.
Claims
1. A drilling and fixing tool for steel-aluminum composite rails, characterized in that: The structure includes a caliper (1), a support device (2), a positioning device (3), a limiting block (3-1), and a bolt fastener (4). One end of the caliper (1) rests against the web of the steel-aluminum composite rail, and the other end is connected to one side of the support device (2) via the bolt fastener (4). The upper part of the support device (2) rests against the top or bottom of the steel-aluminum composite rail. The other side of the support device (2) is connected to one end of the positioning device (3) via the bolt fastener (4). The other end of the positioning device (3) is clamped at the web of the steel-aluminum composite rail.
2. The steel-aluminum composite rail drilling and fixing tool according to claim 1, characterized in that: One end of the positioning device (3) is welded with a limiting block (3-1) that matches the groove of the steel-aluminum composite rail. Through holes are machined on the limiting block (3-1). The size and number of these through holes are consistent with the size and number of holes to be drilled on the steel-aluminum composite rail at the construction site.