Self-track-laying walking device of stepping type tunnel formwork trolley

By designing a self-laying track walking device of stepping tunnel formwork trolley, and using technologies such as active sprockets and hydraulic cylinders, the problems of difficult and high cost of track laying in the early stage of tunnel construction have been solved, and the track has been laid and adjusted by itself, which has improved the efficiency and Cost-effective.

CN222253980UActive Publication Date: 2024-12-27ERCHU CO LTD OF CHINA RAILWAY TUNNEL GRP
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Patent Information

Application Number
CN202420499245.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-03-14
Publication Date
2024-12-27
Estimated Expiration
2034-03-14

AI Technical Summary

Technical Problem

In the early stage of construction, the existing tunnel formwork trolleys are difficult to lay tracks, the track spacing is inaccurate, and the cost of manual laying is high, which affects the equipment's operation.

Method used

Design a stepping tunnel formwork trolley self-paving track walking device, including a pedal, a walking device and a lifting support leg mechanism, using the driving sprocket, driven sprocket, walking drive sprocket set, track walking wheel, limit rolling The rollers, track guide wheels and drive devices realize the self-laying and adjustment of the track, and combine the hydraulic cylinder and adjustable support mechanism to ensure the track is flat and stable.

Benefits of technology

The template trolley is realized to lay tracks on its own when walking, ensuring the accuracy of the gauge, improving labor efficiency, saving costs, and simplifying structural design.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a self-track-laying walking device of a stepping type tunnel formwork trolley. The self-track-laying walking device of the stepping type tunnel formwork trolley comprises a rack, a walking device body arranged at the bottom of the rack and a lifting supporting leg mechanism arranged on the rack. The walking device comprises a track, a walking frame, and a driving chain wheel, a driven chain wheel, a walking driving chain wheel group, a track walking wheel, a limiting rolling carrier roller, a track guide wheel and a driving device which are arranged on the walking frame, the driving chain wheel is arranged on an output shaft of the driving device, and the driving chain wheel and the driven chain wheel are connected through a first transmission chain; the walking driving chain wheel set is connected through a second transmission chain, and the two ends of the second transmission chain are correspondingly fixed to the two ends of the track. The limiting rolling carrier roller is positioned on the bottom side of the upper edge of the rail; the rail guide wheels are in rolling contact with the side parts of the rails. The formwork trolley automatically paves a track when walking, the track gauge is ensured, work efficiency is improved, cost is saved, and the structure is simple and reliable.
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Description

Technical Field

[0001] The utility model belongs to the technical field of construction equipment, and in particular relates to a step-type tunnel template trolley self-track laying walking device. Background Art

[0002] In the early stage of tunnel construction, the tunnel trolley used runs on the track laid on the concrete filling surface of the invert. Due to the limitations of ground conditions, not only is track laying difficult, but there are often problems with inaccurate track spacing and uneven tracks during laying, especially after tunnel excavation and before initial support. Not only are these problems more prominent, sometimes it is even impossible to lay the track, affecting the operation of the tunnel trolley. The track is mostly laid manually, which involves many workers, high labor intensity, and high cost. Therefore, it is necessary to develop a tunnel template trolley self-laying track device that meets the technical requirements of tunnel construction. Utility Model Content

[0003] The utility model aims to overcome the problems of the existing template trolley traveling device, manual track laying, inaccurate spacing, much labor, high cost and so on, and provide a step-by-step tunnel template trolley self-track laying traveling device.

[0004] The utility model is realized by the following technical solutions:

[0005] A walking type tunnel formwork trolley self-tracking walking device comprises a trolley frame, a walking device arranged at the bottom of the trolley frame, and a lifting support leg mechanism arranged on the trolley frame;

[0006] The walking device includes a track, a walking frame and a driving sprocket, a driven sprocket, a walking drive sprocket group, a track walking wheel, a limiting rolling roller, a track guide wheel and a driving device installed on the walking frame, wherein the driving sprocket is installed on the output shaft of the driving device, and the driving sprocket and the driven sprocket are linked by a first transmission chain; the walking drive sprocket group includes an intermediate walking drive sprocket and two side walking drive sprockets symmetrically arranged on both sides of the intermediate walking drive sprocket, and the intermediate walking drive sprocket and the driven sprocket are coaxially installed; the walking drive sprocket group is linked by a second transmission chain, and the two ends of the second transmission chain are fixed correspondingly to the two ends of the track; the track walking wheel is located at the top of the track, and the limiting rolling roller is located at the bottom side of the upper edge of the track; the track guide wheel is in rolling contact with the side of the track.

[0007] In the above technical solution, the platform includes a supporting truss, an arc-shaped template installed on the outside of the supporting truss, and a plurality of connecting legs vertically installed at the lower part of the internal supporting truss. The lifting support leg mechanism is installed at the bottom of the connecting leg. The lifting support leg mechanism adopts a hydraulic cylinder for lifting. By controlling the lifting and lowering of the lifting support leg mechanism, the platform and the walking device at the bottom thereof can be lifted off the ground together, or the walking device can be made to contact the ground.

[0008] In the above technical solution, one end of the second transmission chain is fixed to one end of the track, and then the second transmission chain goes along the track from the bottom of the first side travel drive sprocket upward to the middle travel drive sprocket, then goes down to the bottom of the first side travel drive sprocket, and then is fixedly connected to the other end of the track along the track.

[0009] In the above technical solution, the track running wheel is installed inside the running frame through a rotating shaft and a bearing.

[0010] In the above technical solution, the track adopts an I-shaped track, and a protrusion is arranged on the top of the I-shaped track for cooperating with the track running wheel.

[0011] In the above technical solution, the track guide wheels are installed on the front and rear sides of the walking frame through connecting arms, and two track guide wheels are respectively arranged on each side.

[0012] In the above technical solution, an articulated connection seat is provided on the top of the walking frame for connecting the platform. The articulated connection seat can realize adaptive adjustment of the angle between the walking device and the platform so that the track at the bottom of the walking device can fit the ground.

[0013] In the above technical solution, an adjustable supporting mechanism is also provided at the bottom of the arc-shaped template of the stand. The adjustable supporting mechanism adopts a manually adjustable screw mechanism. When the trolley is in the template supporting state, the adjustable supporting mechanism supports the ground, thereby ensuring the supporting strength of the template; when the trolley needs to move, the adjustable supporting mechanism is lifted off the ground, thereby not affecting the movement of the trolley.

[0014] In the above technical solution, a transversely adjustable supporting foot mechanism is arranged at the bottom of the lifting supporting leg mechanism, and the transversely adjustable leg mechanism includes a supporting foot, a transverse driving cylinder and a connecting piece. One end of the transverse driving cylinder is installed on the base of the lifting supporting leg mechanism, and the other end of the transverse driving cylinder is connected to the supporting foot through the connecting piece. The supporting foot is installed on the lower part of the base of the lifting supporting leg mechanism through a transverse slide structure. By adjusting the transverse driving cylinder, the transverse position of the supporting foot can be adjusted, and the optimal supporting position can be found.

[0015] The advantages and beneficial effects of the utility model are:

[0016] The template trolley of the utility model lays the track automatically when traveling, thereby ensuring the track gauge, improving work efficiency, saving costs, and having a simple and reliable structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of the self-track-laying walking device of the step-type tunnel template trolley of the utility model.

[0018] Figure 2 It is a side view of a self-track-laying walking device of a step-type tunnel formwork trolley of the utility model.

[0019] Figure 3 It is a schematic diagram of the main structure of the walking device in the utility model.

[0020] Figure 4 It is a side structural schematic diagram of the walking device in the utility model.

[0021] Figure 5 It is a schematic diagram of the installation structure of the track running wheel of the running device in the utility model.

[0022] Figure 6 It is a schematic diagram of the structure of the walking device in the utility model from a top view.

[0023] Figure 7 It is a structural schematic diagram of the laterally adjustable supporting foot mechanism in the utility model.

[0024] For ordinary technicians in this field, other relevant drawings can be obtained based on the above drawings without any creative work. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the technical solution of the present utility model is further described below in conjunction with specific embodiments.

[0026] The utility model provides a step-by-step tunnel template trolley self-tracking walking device, see attached Figure 1 and attached Figure 2 , including a platform 1, a walking device 2 arranged at the bottom of the platform 1, and a lifting support leg mechanism 3 arranged on the platform 1.

[0027] The specific structure of the stand 1 is shown in the attached Figure 2The platform 1 includes a supporting truss 1.2, an arc-shaped template 1.1 installed on the outside of the supporting truss 1.2, and four connecting legs 1.3 vertically installed at the lower part of the internal supporting truss 1.2. The lifting support leg mechanism 3 is installed at the bottom of the connecting leg 1.3. The lifting support leg mechanism 3 is lifted and lowered by a hydraulic cylinder. By controlling the lifting and lowering of the lifting support leg mechanism 3, the platform 1 and the walking device 2 at the bottom thereof can be lifted off the ground together, or the walking device 2 can be made to contact the ground.

[0028] The specific structure of the walking device 2 is shown in the attached Figure 3 -Attached Figure 6The walking device 2 includes a track 2.1, a walking frame 2.2 and a driving sprocket 2.3, a driven sprocket 2.4, a walking drive sprocket group 2.5, a track walking wheel 2.6, a limit rolling roller 2.7, a track guide wheel 2.8 and a driving device 2.9, wherein the driving sprocket 2.3 is installed on the output shaft of the driving device 2.9, and the driving sprocket 2.3 and the driven sprocket 2.4 are linked by a first transmission chain 2.10; the walking drive sprocket group 2.5 includes an intermediate walking drive sprocket 2.51 and a symmetrically arranged intermediate walking drive sprocket 2.52. The two side travel drive sprockets 2.52 on both sides of the driving sprocket 2.51, the three travel drive sprockets are in the same vertical plane, and the middle travel drive sprocket 2.51 and the driven sprocket 2.4 are coaxially installed to achieve synchronous operation; in addition, the travel drive sprocket group 2.5 is linked by a second transmission chain 2.11, and the two ends of the second transmission chain 2.11 are fixed correspondingly to the two ends of the track 2.1, that is, one end of the second transmission chain 2.11 is fixed to one end of the track 2.1, and then the second transmission chain 2.11 is connected along the track 2.1 from the first side travel drive sprocket The bottom is wound upward to the middle travel drive sprocket 2.51, then wound downward to the bottom of the first side travel drive sprocket, and then fixedly connected to the other end of the track 2.1 along the track 2.1; the track travel wheel 2.6 is installed inside the travel frame 2.2 through the rotating shaft 2.61 and the bearing 2.62, and the track travel wheel 2.6 is located at the top of the track 2.1 for traveling on the track 2.1; the track 2.1 adopts an I-shaped track, and a protrusion is provided on the top of the I-shaped track 2.1 for cooperating with the track travel wheel 2.6; the limiting rolling roller 2.7 is installed at the bottom of the travel frame 2.2 The track guide wheels 2.8 are installed on the front and rear sides of the traveling frame 2.2 through connecting arms, and two track guide wheels 2.8 are arranged on each side, and the track guide wheels 2.8 are in rolling contact with the side of the track 2.1, so as to ensure that the traveling frame 2.2 and the track 2.1 are not offset, so that the traveling frame 2.2 always moves along the center line of the track 2.1.

[0029] Furthermore, an articulated connection seat 2.21 is provided on the top of the walking frame 2.2 for connecting to the platform 1. The articulated connection seat 2.21 can realize adaptive adjustment of the angle between the walking device 2 and the platform 1 so that the track 2.1 at the bottom of the walking device 2 can fit the ground.

[0030] The step-by-step walking process of the step-by-step tunnel template trolley self-tracking walking device of the utility model is as follows:

[0031] When the lifting support leg mechanism 3 is in the retracted state, the track 2.1 of the walking device 2 supports the ground, and the driving device 2.9 of the walking device 2 is started. The driving device 2.9 drives the driven sprocket 2.4 to operate through the first transmission chain 2.10, and the driven sprocket 2.4 will synchronously drive the intermediate walking drive sprocket 2.51 to operate. When the intermediate walking drive sprocket 2.51 operates, under the action of the second transmission chain 2.11 and the walking drive sprocket group 2.5, the walking frame 2.2 moves on the track 2.1, that is, the walking frame 2.2 drives the entire platform 1 to move;

[0032] When the traveling frame 2.2 moves to the terminal position of the track 2.1, the lifting support leg mechanism 3 is controlled to extend, and the entire platform 1 and the traveling device 2 are lifted, so that the track 2.1 is off the ground, and then the driving device 2.9 of the traveling device 2 is started. At this time, the traveling frame 2.2 is stationary, and the track 2.1 moves (advance or reverse movement is achieved by controlling the forward and reverse rotation of the driving device 2.9). When the track 2.1 moves to the starting end of the track where the traveling frame 2.2 is located, the driving device 2.9 is stopped; then the lifting support leg mechanism 3 is retracted, so that the track 2.1 of the traveling device 2 supports the ground again, and the driving device 2.9 of the traveling device 2 is started to proceed to the next step.

[0033] Furthermore, an adjustable supporting mechanism 1.4 is provided at the bottom of the arc-shaped template 1.1 of the gantry 1. The adjustable supporting mechanism 1.4 usually adopts a manually adjustable screw mechanism. When the trolley is in the template supporting state, the adjustable supporting mechanism 1.4 supports the ground, thereby ensuring the supporting strength of the template; when the trolley needs to move, the adjustable supporting mechanism 1.4 is lifted off the ground, thereby not affecting the movement of the trolley.

[0034] For further information, see Appendix Figure 7 A transversely adjustable supporting foot mechanism 4 is arranged at the bottom of the lifting supporting leg mechanism 3. The transversely adjustable leg mechanism 4 comprises a supporting foot 4.1, a transverse driving cylinder 4.2 and a connecting piece 4.3. One end of the transverse driving cylinder 4.2 is mounted on the base 3.1 of the lifting supporting leg mechanism 3, and the other end of the transverse driving cylinder 4.2 is connected to the supporting foot 4.1 through the connecting piece 4.3. The supporting foot 4.1 is mounted on the lower part of the base 3.1 of the lifting supporting leg mechanism 3 through a transverse slide structure. By adjusting the transverse driving cylinder 4.2, the transverse position of the supporting foot 4.1 can be adjusted (the transverse here refers to the width direction of the tunnel), so as to find the optimal supporting position.

[0035] The above is an exemplary description of the present invention. It should be noted that, without departing from the core of the present invention, any simple deformation, modification or other equivalent replacement that can be done by other technical personnel in this field without expending creative labor falls within the protection scope of the present invention.

Claims

1. A walking tunnel formwork trolley self-tracking walking device, characterized in that: It includes a platform, a walking device arranged at the bottom of the platform, and a lifting support leg mechanism arranged on the platform; The walking device includes a track, a walking frame and a driving sprocket, a driven sprocket, a walking drive sprocket group, a track walking wheel, a limiting rolling roller, a track guide wheel and a driving device installed on the walking frame, wherein the driving sprocket is installed on the output shaft of the driving device, and the driving sprocket and the driven sprocket are linked by a first transmission chain; the walking drive sprocket group includes an intermediate walking drive sprocket and two side walking drive sprockets symmetrically arranged on both sides of the intermediate walking drive sprocket, and the intermediate walking drive sprocket and the driven sprocket are coaxially installed; the walking drive sprocket group is linked by a second transmission chain, and the two ends of the second transmission chain are fixed correspondingly to the two ends of the track; the track walking wheel is located at the top of the track, and the limiting rolling roller is located at the bottom side of the upper edge of the track; the track guide wheel is in rolling contact with the side of the track.

2. The self-tracking walking device for the step-by-step tunnel template trolley according to claim 1 is characterized in that: The platform includes a supporting truss, an arc-shaped template installed on the outside of the supporting truss, and a plurality of connecting legs vertically installed at the lower part of the internal supporting truss. The lifting supporting leg mechanism is installed at the bottom of the connecting leg, and the lifting supporting leg mechanism adopts a hydraulic cylinder.

3. The self-tracking walking device for the step-by-step tunnel template trolley according to claim 1 is characterized in that: One end of the second transmission chain is fixed to one end of the track, and then the second transmission chain goes along the track from the bottom of the first side travel drive sprocket upward to the middle travel drive sprocket, then goes down to the bottom of the first side travel drive sprocket, and then is fixedly connected to the other end of the track along the track.

4. The self-tracking walking device for the step-by-step tunnel template trolley according to claim 1 is characterized in that: The track running wheel is installed inside the running frame through a rotating shaft and a bearing.

5. The self-tracking walking device for the step-by-step tunnel formwork trolley according to claim 1 is characterized in that: The track adopts an I-shaped track, and a protrusion is arranged on the top of the I-shaped track for matching with the track running wheel.

6. The self-tracking walking device for the step-by-step tunnel template trolley according to claim 1 is characterized in that: The track guide wheels are installed on the front and rear sides of the traveling frame through connecting arms, and two track guide wheels are respectively arranged on each side.

7. The self-tracking walking device for the step-by-step tunnel template trolley according to claim 1 is characterized in that: A hinged connection seat is arranged on the top of the walking frame for connecting the platform.

8. The self-tracking walking device for the step-by-step tunnel template trolley according to claim 1 is characterized in that: An adjustable supporting mechanism is also arranged at the bottom of the arc-shaped template of the stand, and the adjustable supporting mechanism adopts a manually adjustable screw mechanism.

9. The self-tracking walking device for the step-by-step tunnel formwork trolley according to claim 1 is characterized in that: A transversely adjustable supporting foot mechanism is arranged at the bottom of the lifting supporting leg mechanism, and the transversely adjustable leg mechanism includes a supporting foot, a transverse driving cylinder and a connecting piece, one end of the transverse driving cylinder is installed on the base of the lifting supporting leg mechanism, and the other end of the transverse driving cylinder is connected to the supporting foot through the connecting piece, and the supporting foot is installed at the lower part of the base of the lifting supporting leg mechanism through a transverse slide structure.