Connecting structure at track expansion joint

Abstract

The utility model discloses a connecting structure at a track expansion joint, and belongs to the field of tracks. Comprising two adjacent track units and a track connecting bolt, at least one hollow notch is formed in the end face of each track unit and arranged in the length direction of the track unit, and the two ends of the track connecting bolt are arranged in the hollow notches of the two adjacent track units respectively. And one end of the track connecting bolt is fixed in the hollow notch of one track unit, and the other end of the track connecting bolt freely slides in the hollow notch of the other track unit. When the track expands or contracts, the unfixed side of the track connecting bolt can freely slide in the hollow notch of the track unit to adapt to the length change of the track. Compared with traditional rigid connection, non-rigid connection is adopted, the track gap amount can be automatically adjusted under different temperature conditions, distortion of the track caused by temperature change can be prevented, and the performance and stability of the track are kept under different temperature conditions.

Description

Technical Field

[0001] The utility model relates to the field of tracks, in particular to a connection structure at a track expansion joint. Background Art

[0002] Mounted robots are used in indoor ceilings (such as factory buildings), tunnel ceilings, and other application scenarios. They are mounted on fixed tracks at the top and move along the tracks. Examples include inspection robots in tunnels or factories, firefighting robots in tunnels, etc.

[0003] Inspection robots, for example, offer safer, more efficient, and more accurate inspection services, saving businesses time and labor costs. They have become indispensable smart devices in many industries. In the transportation sector, inspection robots are often used for inspections in tunnels and other road sections.

[0004] Typically, a track is installed on the roof of a tunnel or other structure, where the mounted robot travels and performs its functions. Tracks are typically composed of multiple track sections connected by connectors. These connectors must be able to adapt to changes in track length to ensure the stability and reliability of the entire system. Under wide temperature fluctuations, conventional rigid connectors cannot meet this requirement, resulting in overall track bending and deformation. Utility Model Content

[0005] The utility model provides a connection structure at a track expansion joint, which can automatically adjust the track gap under different temperature conditions and prevent the track from twisting and deforming due to temperature changes.

[0006] The utility model provides the following technical solutions:

[0007] A connection structure at a track expansion joint includes two adjacent track units and a track connecting pin. At least one hollow slot is provided on the end surface of the track unit, and the hollow slot is arranged along the length direction of the track unit. The two ends of the track connecting pin are respectively arranged in the hollow slots of the two adjacent track units. One end of the track connecting pin is fixed in the hollow slot of one track unit, and the other end slides freely in the hollow slot of the other track unit.

[0008] Furthermore, one end of the track connecting pin is fixed in the hollow slot of the track unit by a bolt.

[0009] Furthermore, the bolt passes through the hollow slot from the outside of the track unit and connects with the track connecting pin, thereby fixing the track connecting pin.

[0010] Furthermore, the hollow notch is provided along the length direction of the track unit;

[0011] Alternatively, the hollow slots corresponding to the two end surfaces of the track unit are intermittently arranged, and the length of the hollow slots is greater than the length of the track connection pin for insertion.

[0012] Furthermore, the track unit includes a vertically arranged wall panel and a tread panel located at the bottom end of the wall panel and arranged horizontally, and the wall panel and the tread panel are formed into an inverted T shape as a whole.

[0013] Furthermore, the hollow slot is provided on the wall panel and / or the tread panel.

[0014] Furthermore, the cross-sectional shape of the track connecting pin is adapted to the cross-sectional shape of the hollow slot.

[0015] Furthermore, both ends of the track connecting pin are provided with insertion guide portions.

[0016] The utility model has the following beneficial effects:

[0017] In this utility model, when the track expands or contracts, the free end of the track connecting pin can slide freely within the hollow slot of the track unit to accommodate changes in track length. This non-rigid connection, compared to traditional rigid connections, can automatically adjust the track gap under different temperature conditions, preventing track distortion caused by temperature changes and maintaining track performance and stability under different temperature conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the connection structure at the track expansion joint of the present utility model;

[0019] Figure 2 This is a schematic diagram of the track connection pin;

[0020] Figure 3 This is a schematic diagram of the end face of the track unit. DETAILED DESCRIPTION

[0021] In order to make the technical problems to be solved, technical solutions and advantages of the present invention clearer, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0022] The utility model provides a connection structure at a track expansion joint, such as Figure 1-3 As shown, it includes two adjacent track units 104 and a track connecting pin 112 . At least one hollow slot 111 is opened on the end surface of the track unit 104 , and the hollow slot 111 is arranged along the length direction of the track unit 104 .

[0023] Both ends of the track connecting pin 112 are respectively arranged in the hollow slots 111 of the two adjacent track units 104. One end of the track connecting pin 112 is fixed in the hollow slot 111 of one track unit, and the other end slides freely in the hollow slot 111 of the other track unit.

[0024] When the track expands or contracts, the free end of the track connection pin slides freely within the hollow slot of the track unit, adapting to changes in track length. This non-rigid connection, unlike traditional rigid connections, can automatically adjust the track gap under varying temperature conditions, preventing distortion caused by temperature changes and maintaining track performance and stability under varying temperature conditions.

[0025] The present invention does not limit the fixing method of the track connecting pin 112 . In one example, one end of the track connecting pin 112 is fixed in the hollow slot 111 of a track unit 104 by a bolt 113 .

[0026] Specifically, the bolt 113 passes through the hollow slot 111 from the outside of the track unit 104 and is connected to the track connecting pin 112 to fix the track connecting pin 112.

[0027] The length of the hollow slot 111 can be set along the length direction of the track unit 104. It can also be set not along the length, but the hollow slots 111 corresponding to the two end surfaces of the track unit 104 are intermittently set, but the length of the hollow slot 111 is required to be greater than the length of the track connection pin 112.

[0028] The position, number and cross-sectional shape of the hollow slots 111 can be flexibly set according to the specific form of the track, and the position, number and cross-sectional shape of the track connecting pins 112 are adapted to the hollow slots 111 .

[0029] As an improvement, the track unit 104 includes a vertically arranged wall panel 101 and a tread panel 102 located at the bottom end of the wall panel 101 and arranged horizontally. The wall panel 101 and the tread panel 102 are overall inverted T-shaped, and the top surface of the tread panel 102 forms symmetrical walking treads 103 on both sides of the wall panel 101.

[0030] Accordingly, the hollow slot 111 may be provided on the wall panel 101 , or on the tread panel 102 , or on both.

[0031] In order to facilitate the insertion of the track connecting pin 112 into the hollow slot 111 , insertion guides 114 are provided at both ends of the track connecting pin 112 .

[0032] The track expansion joint connection structure of the present invention can be provided at the connection of each track unit. Of course, it is also possible not to provide it at the connection of each track unit, but to provide it at intervals on the track, that is, to provide a track expansion joint connection structure at intervals of multiple track units.

[0033] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A connection structure at a track expansion joint, characterized in that: It includes two adjacent track units and a track connecting pin. At least one hollow slot is provided on the end surface of the track unit. The hollow slot is arranged along the length direction of the track unit. The two ends of the track connecting pin are respectively arranged in the hollow slots of the two adjacent track units. One end of the track connecting pin is fixed in the hollow slot of one track unit, and the other end slides freely in the hollow slot of the other track unit.

2. The connection structure at the track expansion joint according to claim 1, characterized in that: One end of the track connecting pin is fixed in the hollow slot of the track unit by a bolt.

3. The connection structure at the track expansion joint according to claim 2, characterized in that: The bolt passes through the hollow slot from the outside of the track unit and is connected to the track connecting pin, thereby fixing the track connecting pin.

4. The connection structure at the track expansion joint according to claim 3, characterized in that: The hollow notch is arranged along the length direction of the track unit; Alternatively, the hollow slots corresponding to the two end surfaces of the track unit are intermittently arranged, and the length of the hollow slots is greater than the length of the track connection pin for insertion.

5. The connection structure at the track expansion joint according to any one of claims 1 to 4, characterized in that: The track unit includes a vertically arranged wall panel and a tread panel located at the bottom end of the wall panel and arranged horizontally, and the wall panel and the tread panel are formed into an inverted T shape as a whole.

6. The connection structure at the track expansion joint according to claim 5, characterized in that: The hollow slot is opened on the wall panel and / or the tread panel.

7. The connection structure at the track expansion joint according to claim 6, characterized in that: The cross-sectional shape of the track connecting pin is adapted to the cross-sectional shape of the hollow slot.

8. The connection structure at the track expansion joint according to claim 7, characterized in that: Insertion guides are provided at both ends of the track connecting pin.

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