Simple ladder truck for single-side high-altitude operation in metro interval tunnel

Abstract

The invention relates to the technical field of auxiliary equipment of rail traffic engineering, in particular to a simple ladder truck for single-side high-altitude operation in a subway interval tunnel, which comprises a base and an extension table, and a first support frame and a second support frame are arranged at the top of the base. A lifting assembly used for sliding up and down is arranged between the first supporting frame and the second supporting frame, a rotating rod used for adjusting the extending table is arranged in the lifting assembly, and a first gear and an extending rod which are used for reverse lifting of the two sides are arranged in the lifting assembly. Lifting of the ladder truck is completed through the extension rod and the lifting assembly, and meanwhile single-side same-direction and two-direction lifting of the extension tables on the two sides is completed through the extension rod and the first gear.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transit engineering auxiliary equipment, and in particular to a simple ladder car used for single-sided high-altitude operations in subway tunnels. Background Art

[0002] Subway tunnel ladders play a vital role in subway construction and maintenance. Designed specifically for catenary inspection and maintenance, they are primarily used for catenary inspection and maintenance work in transportation facilities such as subways, high-speed railways, and light rail transit. Their design and use significantly improve the efficiency and safety of construction and maintenance. In light of this, we propose a simple ladder for single-sided, high-altitude operations within subway tunnels.

[0003] The Chinese announcement number is: CN217532839U, which discloses a simple ladder car for single-sided high-altitude operations in subway tunnels, including a ladder car frame, rail wheels, directional wheels, an operating platform, a guardrail and a ladder. The ladder car frame includes a side frame and a top frame of an oblique triangle structure. Side frames are arranged opposite to each other on both sides of the top frame, and the long sides of each side frame are opposite to the side walls of the tunnel. Single-wheel flange rail wheels are installed at the bottom corners of the ladder car frame, an operating platform is paved on the top frame, and guardrails are arranged around the operating platform. The directional wheels are vertically installed on both sides of the front end surface of the top frame, and the ladder is installed on the rear end edge of one side of the side frame. A safety door is provided at the guardrail position corresponding to the ladder. This patent has the advantages of simple structure, reliable and convenient walking and stopping, easy construction, improved construction efficiency, and providing strong protection for the installation and construction of lighting fixtures and pipelines on the side walls of subway tunnels.

[0004] Although the above patent utilizes a ladder car frame, rail wheels, directional wheels and other components, and has the advantages of simple structure and easy operation, considering that the height of the ladder car is limited by the subway tunnel, its height is also limited. If construction is carried out on the top of the tunnel under conventional operations, the ladder car with a fixed height needs to be disassembled and assembled in the tunnel on the one hand, and on the other hand, its height cannot be adjusted, which forms certain limitations. Summary of the Invention

[0005] The object of the present invention is to provide a simple ladder truck for single-sided high-altitude operations in subway tunnels, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned object, the present invention provides a simple ladder vehicle for single-sided high-altitude operation in subway tunnels, comprising a base and an extension platform, wherein a first support frame and a second support frame are provided on the top of the base, a lifting assembly for sliding up and down is provided between the first and second support frames, a rotating rod for adjusting the extension platform is provided in the lifting assembly, and a first gear and an extension rod for reverse lifting on both sides are provided in the lifting assembly, wherein:

[0007] By rotating the rotating rod, the extension rod and the lifting assembly are used to complete the lifting of the ladder car, and at the same time, the extension rod and the first gear are used to complete the unilateral same-direction and bidirectional lifting of the extension platforms on both sides.

[0008] As a preferred embodiment of the present invention, the base is square as a whole, a ladder is fixedly connected to the top of the base, the ladder and the second support frame are fixedly connected at two opposite sides of the top of the base, the first support frame is fixedly connected to the remaining two sides of the square on the top of the base, and the outer wall of the first support frame is provided with a first arched hole.

[0009] As a preferred embodiment of the present invention, a support plate is detachably connected between the No. 1 support frame, the ladder and the No. 2 support frame, the support plate is slidably connected to the middle ends of the No. 1 support frame and the No. 2 support frame, and a lifting platform is slidably connected to the upper end outer walls of the No. 1 support frame and the No. 2 support frame, and a lifting assembly is arranged between the support plate and the lifting platform.

[0010] As a preferred embodiment of the present invention, the lifting assembly includes multiple support columns, multiple lifting columns and a sliding plate, the lower ends of the multiple support columns are fixedly connected to the top of the support plate, the interior of the support column is hollow and the outer wall is provided with a No. 2 arched hole, the lifting column is slidably connected to the inner side of the support column, the tops of the multiple lifting columns are fixedly connected to the sliding plate, and the sliding plate is fixedly connected to the bottom of the lifting platform.

[0011] As a preferred embodiment of the present invention, a horizontal column is fixedly connected between two adjacent support columns, a hydraulic rod is fixedly connected to the top of the horizontal column, and the hydraulic rod is fixedly connected to the bottom of the sliding plate at the end away from the horizontal column. Two adjacent middle ends of the support columns are fixedly connected with a horizontal frame, and the horizontal frame and the horizontal column are not on the same plane, and the two are distributed vertically.

[0012] As a preferred embodiment of the present invention, the bottom of the lifting column is fixedly connected to a support rod, a plurality of sliding columns are slidably connected between the horizontal frames on both sides, the tops of the plurality of sliding columns are fixedly connected to a fixed column, the inner side of the fixed column is rotatably connected to a rotating rod, the middle end of the rotating rod is fixedly connected to a No. 2 gear, and both ends of the rotating rod are fixedly connected to extension rods in the same direction, wherein:

[0013] The second gears on both sides are meshed and connected with each other.

[0014] As a preferred embodiment of the present invention, the fixed column is hollowed out internally, the fixed column is located between the sliding columns on both sides, the bottom of the fixed column is fixedly connected to a telescopic rod, the output end of the telescopic rod passes through the bottom of the fixed column, the output end of the telescopic rod is rotatably connected to gear No. 1, the gear No. 1 is located below gear No. 2 on both sides, and the gear No. 1 is meshed with gear No. 2.

[0015] As a preferred embodiment of the present invention, the extension rod is provided with a No. 3 arched hole on the outer wall at one end away from the rotating rod, the width of the No. 3 arched hole matches the diameter of the support rod, and the rotating rod is provided with an outer wall notch at the top position of the No. 3 arched hole, the width of the outer wall notch matches the width of the support rod.

[0016] As a preferred embodiment of the present invention, the extension rod is slidably connected to a fixed rod at one end away from the rotating rod, the fixed rod is fixedly connected to the extension platform, the extension platform is slidably connected to the inner side of the No. 1 support frame, and the width of the fixed rod matches the width of the No. 1 arch hole, and the fixed rod passes through the No. 1 arch hole of the No. 1 support frame.

[0017] As a preferred embodiment of the present invention, guardrails are provided on the tops of the lifting platform and the extension platform.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. In the simple ladder car used for single-sided high-altitude operations in the subway tunnel, the electric drive drives the rotating rod and the No. 2 gear to rotate. The rotation of the rotating rods on both sides will drive the extension rods at both ends to rotate. At this time, the support rod and lifting column in the No. 3 arch hole are moved up and down by the rotation of the extension rod, which allows the ladder car to be adjusted to different heights when required.

[0020] 2. In the simple ladder car for single-sided high-altitude operations in the subway section tunnel, the telescopic rod drives the No. 1 gear to push open the No. 2 gears on both sides, so that the No. 2 gears, extension rods and rotating rods on both sides rotate in the same direction. At this time, the extension rods will drive the extension platforms on both sides to slide in different directions, which makes the extension platforms on both sides slide in different directions, and when the fixed column slides outward, the support rod will be separated from the extension rod at the notch in the outer wall, so that the extension rod will not affect the rise of the lifting platform in the process of driving the extension platform on this side to move downward. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is an overall three-dimensional schematic diagram of a simple ladder vehicle for single-sided high-altitude operation in a subway tunnel according to the present invention;

[0022] Figure 2 This is a schematic overall cross-sectional view of a simple ladder vehicle for single-sided high-altitude operation in a subway tunnel according to the present invention;

[0023] Figure 3 This is a schematic diagram of the lifting platform portion of a simple ladder vehicle for single-sided high-altitude operation in a subway tunnel according to the present invention;

[0024] Figure 4 This is a three-dimensional schematic diagram of the lifting platform of a simple ladder vehicle for single-sided high-altitude operation in a subway tunnel according to the present invention;

[0025] Figure 5 This is a three-dimensional schematic diagram of the lifting assembly of a simple ladder vehicle for single-sided high-altitude operation in a subway tunnel according to the present invention;

[0026] Figure 6 This is a three-dimensional schematic diagram of the lifting components of a simple ladder vehicle for single-sided high-altitude operation in a subway tunnel according to the present invention;

[0027] Figure 7 This is a three-dimensional schematic diagram of the adjustment rod of a simple ladder vehicle for single-sided high-altitude operation in a subway tunnel according to the present invention;

[0028] Figure 8 This is a three-dimensional schematic diagram of the expansion of the adjustment rod of the simple ladder vehicle for single-sided high-altitude operation in a subway tunnel according to the present invention;

[0029] The meaning of each number in the figure is:

[0030] 1. Base; 11. Ladder; 12. Support frame No. 1; 121. Arched hole No. 1; 13. Support frame No. 2; 14. Support plate; 15. Lifting platform; 2. Lifting assembly; 21. Support column; 211. Arched hole No. 2; 212. Cross column; 213. Hydraulic rod; 214. Cross frame; 22. Lifting column; 221. Support rod; 23. Sliding plate; 24. Sliding column; 241. Fixed column; 2411. Telescopic rod; 2412. Gear No. 1; 25. Rotating rod; 251. Gear No. 2; 252. Extension rod; 2521. Arched hole No. 3; 2522. Outer wall notch; 26. Fixed rod; 3. Extension platform. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0033] Example 1

[0034] See also Figures 1-8 As shown, this embodiment provides a simple ladder car for single-sided high-altitude operations in subway section tunnels, including a base 1 and an extension platform 3. A No. 1 support frame 12 and a No. 2 support frame 13 are provided on the top of the base 1. A lifting component 2 for sliding up and down is provided between the No. 1 support frame 12 and the No. 2 support frame 13. A rotating rod 25 for adjusting the extension platform 3 is provided in the lifting component 2. A No. 1 gear 2412 and an extension rod 252 for reverse lifting on both sides are provided in the lifting component 2, wherein: through the rotation of the rotating rod 25, the extension rod 252 and the lifting component 2 are used to complete the lifting of the ladder car, and at the same time, the extension rod 252 and the No. 1 gear 2412 are used to complete the single-sided same-direction and two-way lifting of the extension platforms 3 on both sides.

[0035] like Figure 1-Figure 3 As shown, the base 1 is square as a whole, and a ladder 11 is fixedly connected to the top of the base 1. The ladder 11 and the No. 2 support frame 13 are fixedly connected to the opposite two sides of the top of the base 1, and the No. 1 support frame 12 is fixedly connected to the remaining two sides of the square on the top of the base 1. The outer wall of the No. 1 support frame 12 is provided with an arched hole 121, and a support plate 14 is detachably connected between the No. 1 support frame 12, the ladder 11 and the No. 2 support frame 13. The support plate 14 is slidably connected to the middle end of the No. 1 support frame 12 and the No. 2 support frame 13. The upper outer walls of the No. 1 support frame 12 and the No. 2 support frame 13 are slidably connected to a lifting platform 15, and a lifting assembly 2 is arranged between the support plate 14 and the lifting platform 15.

[0036] like Figure 4-Figure 8As shown, the lifting assembly 2 includes multiple support columns 21, multiple lifting columns 22 and a sliding plate 23. The lower ends of the multiple support columns 21 are fixedly connected to the top of the support plate 14. The interior of the support column 21 is hollow and the outer wall is provided with a second arched hole 211. The lifting column 22 is slidably connected to the inner side of the support column 21. The tops of the multiple lifting columns 22 are fixedly connected to the sliding plate 23. The sliding plate 23 is fixedly connected to the bottom of the lifting platform 15. A cross column 212 is fixedly connected between two adjacent support columns 21. The top of the cross column 212 is fixedly connected to a hydraulic rod 213. The hydraulic rod 213 is fixed at one end away from the cross column 212. Connected to the bottom of the sliding plate 23, the two adjacent middle ends of the support column 21 are fixedly connected with a cross frame 214. The cross frame 214 and the cross column 212 are not on the same plane, and the two are vertically distributed. The bottom of the lifting column 22 is fixedly connected with a support rod 221. A plurality of sliding columns 24 are slidably connected between the cross frames 214 on both sides. The tops of the plurality of sliding columns 24 are fixedly connected with a fixed column 241. The inner side of the fixed column 241 is rotatably connected with a rotating rod 25. The middle end of the rotating rod 25 is fixedly connected to the No. 2 gear 251. Both ends of the rotating rod 25 are fixedly connected to extension rods 252 in the same direction, wherein: the No. 2 gears 251 on both sides are meshed and connected with each other.

[0037] like Figure 7-Figure 8 As shown, the fixed column 241 is hollowed out internally. The fixed column 241 is located between the sliding columns 24 on both sides. The bottom of the fixed column 241 is fixedly connected to a telescopic rod 2411. The output end of the telescopic rod 2411 passes through the bottom of the fixed column 241. The output end of the telescopic rod 2411 is rotatably connected to the No. 1 gear 2412. The No. 1 gear 2412 is located below the No. 2 gear 251 on both sides, and the No. 1 gear 2412 is meshed with the No. 2 gear 251. The extension rod 252 is provided with a No. 3 arched hole 2521 on the outer wall of the end away from the rotating rod 25. The width of the No. 3 arched hole 2521 is the same as that of the support rod. The diameter of 221 is matched, the rotating rod 25 is provided with an outer wall notch 2522 at the top position of the third arch hole 2521, the width of the outer wall notch 2522 is matched with the width of the support rod 221, the extension rod 252 is slidably connected with a fixed rod 26 at the end away from the rotating rod 25, the fixed rod 26 is fixedly connected to the extension platform 3, the extension platform 3 is slidably connected to the inner side of the No. 1 support frame 12, and the width of the fixed rod 26 is matched with the width of the No. 1 arch hole 121, the fixed rod 26 passes through the No. 1 arch hole 121 of the No. 1 support frame 12, and guardrails are provided on the top of the lifting platform 15 and the extension platform 3.

[0038] It can be seen from this that when the ladder truck needs to be raised or lowered, Figure 3-Figure 6As shown, under the electric drive, the rotating rod 25 is driven to rotate. When the rotating rod 25 rotates, it will drive the second gear 251 on one side to rotate. At the same time, the rotation of the second gear 251 on one side will drive the second gear 251 on the other side and the rotating rod 25 on the other side to rotate together, and the rotating rods 25 on both sides rotate in opposite directions. At this time, the rotation of the rotating rods 25 on both sides will drive the extension rods 252 at both ends to rotate a certain angle. At this time, the support rod 221 and the lifting column 22 in the No. 3 arch hole 2521 are moved up and down by the rotation of the extension rod 252, and the lifting column 22 will drive the sliding plate 23 and the lifting platform 15 to slide up and down in the No. 1 support frame 12 and the No. 2 support frame 13, so that the height of the ladder car can be adjusted when different heights are required; it should be noted that the support plate 14 and the sliding plate 23 are both detachable components, and the support plate 14 can be adjusted to the position on the No. 1 support frame 12 and the No. 2 support frame 13 through tunnels of different sizes.

[0039] Furthermore, when the extension platforms 3 on both sides need to be raised or lowered to adjust their height, the rotation of the rotating rod 25 also drives the rotation of the extension rod 252, so that the fixed rod 26 in the third arch hole 2521 is lifted upward and slides upward in the first arch hole 121, thereby driving the extension platforms 3 on both sides to slide upward. Because the extension platform 3 is slightly lower than the lifting platform 15, and the rotation radius of the fixed rod 26 is greater than the rotation radius of the support rod 221, when the extension rod 252 is rotated to the highest position, it drives the extension platform 3 to move up to the same horizontal position as the lifting platform 15.

[0040] It should be noted that a horizontal column 212 and a hydraulic rod 213 are also installed between the extension platform 3 and the first support frame 12 to support the extension platform 3. A chain is installed in the first support frame 12 to drive the fixed rod 26 and the extension platform 3 to slide up and down.

[0041] Specifically, the chain is an existing component, not shown in the figure, and realizes transmission operation by cooperating with the sprocket.

[0042] Example 2

[0043] The difference from the first embodiment is that in order to realize the lifting of the extension platforms 3 on both sides in a single direction, as shown in FIG. Figure 5-Figure 7As shown, in the process of the extension rod 252 driving the lifting platform 15 to rise and fall, the telescopic rod 2411 extends and drives the No. 1 gear 2412 to move up to the position between the No. 2 gears 251 on both sides. At this time, the No. 1 gear 2412 pushes the No. 2 gears 251 on both sides outward. At this time, the sliding columns 24 on both sides drive the No. 2 gear 251 and the fixed columns 241 to expand to both sides on the horizontal frame 214 until the No. 2 gears 251 on both sides no longer mesh with each other, and the No. 1 gear 2412 located in the middle position and the No. 2 gears 251 on both sides mesh with each other. At this time, the No. 2 gears 251 on both sides rotate in the same direction, which makes the extension rod 252 on one side tilt upward and the extension rod 252 on the other side slide downward during the process of the rotating rod 25 rotating in the same direction, so that the extension platforms 3 on both sides move in different directions respectively under the drive of the extension rods 252 on both sides.

[0044] It should be noted that when the fixed columns 241 on both sides are unfolded to both sides on the cross frame 214, the rotating rod 25 and the extension rod 252 will also be driven to slide outward. At this time, the support rod 221 in the third arch hole 2521 slides from the middle position of the third arch hole 2521 to the outer wall notch 2522. At this time, the extension rod 252 on one side drives the extension platform 3 on this side to slide down without affecting the lifting of the lifting platform 15.

[0045] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A simple ladder vehicle for single-sided high-altitude operation in a subway tunnel, comprising a base (1) and an extension platform (3), characterized in that: A first support frame (12) and a second support frame (13) are arranged on the top of the base (1); a lifting assembly (2) for sliding up and down is arranged between the first support frame (12) and the second support frame (13); a rotating rod (25) for adjusting the extension platform (3) is arranged in the lifting assembly (2); a first gear (2412) and an extension rod (252) for lifting in opposite directions on both sides are arranged in the lifting assembly (2); wherein: By rotating the rotating rod (25), the extension rod (252) and the lifting assembly (2) are used to lift the ladder vehicle, and at the same time, the extension rod (252) and the first gear (2412) are used to lift the extension platforms (3) on both sides in the same direction and in both directions.

2. A simple ladder vehicle for single-sided high-altitude operation in a subway tunnel according to claim 1, characterized in that: The base (1) is square in shape as a whole, a ladder (11) is fixedly connected to the top of the base (1), the ladder (11) and the second support frame (13) are fixedly connected to opposite sides of the top of the base (1), the first support frame (12) is fixedly connected to the remaining two sides of the square top of the base (1), and the outer wall of the first support frame (12) is provided with a first arched hole (121).

3. A simple ladder vehicle for single-sided high-altitude operation in a subway tunnel according to claim 2, characterized in that: A support plate (14) is detachably connected between the first support frame (12), the ladder (11) and the second support frame (13); the support plate (14) is slidably connected to the middle ends of the first support frame (12) and the second support frame (13); a lifting platform (15) is slidably connected to the outer walls of the upper ends of the first support frame (12) and the second support frame (13); and a lifting assembly (2) is arranged between the support plate (14) and the lifting platform (15).

4. A simple ladder vehicle for single-sided high-altitude operation in a subway tunnel according to claim 3, characterized in that: The lifting assembly (2) comprises a plurality of support columns (21), a plurality of lifting columns (22) and a sliding plate (23); the lower ends of the plurality of support columns (21) are fixedly connected to the top of the support plate (14); the interior of the support column (21) is hollow and a second arch hole (211) is opened on the outer wall; the lifting column (22) is slidably connected to the inner side of the support column (21); the tops of the plurality of lifting columns (22) are fixedly connected to the sliding plate (23); and the sliding plate (23) is fixedly connected to the bottom of the lifting platform (15).

5. The simple ladder vehicle for single-sided high-altitude operation in subway tunnel according to claim 4 is characterized in that: A cross column (212) is fixedly connected between two adjacent support columns (21), a hydraulic rod (213) is fixedly connected to the top of the cross column (212), and the hydraulic rod (213) is fixedly connected to the bottom of the sliding plate (23) at one end away from the cross column (212), and a cross frame (214) is fixedly connected to two adjacent middle ends of the support columns (21), and the cross frame (214) and the cross column (212) are not on the same plane, and the two are vertically distributed.

6. A simple ladder vehicle for single-sided high-altitude operation in a subway tunnel according to claim 5, characterized in that: The bottom of the lifting column (22) is fixedly connected with a support rod (221), a plurality of sliding columns (24) are slidably connected between the horizontal frames (214) on both sides, a fixed column (241) is fixedly connected to the top of the plurality of sliding columns (24), a rotating rod (25) is rotatably connected to the inner side of the fixed column (241), a second gear (251) is fixedly connected to the middle end of the rotating rod (25), and both ends of the rotating rod (25) are fixedly connected with extension rods (252) in the same direction, wherein: The second gears (251) on both sides are meshed and connected with each other.

7. The simple ladder vehicle for single-sided high-altitude operation in subway tunnel according to claim 5 is characterized in that: The fixed column (241) is hollow inside and is located between the sliding columns (24) on both sides. The bottom of the fixed column (241) is fixedly connected with a telescopic rod (2411). The output end of the telescopic rod (2411) passes through the bottom of the fixed column (241). The output end of the telescopic rod (2411) is rotatably connected to a first gear (2412). The first gear (2412) is located below the second gear (251) on both sides, and the first gear (2412) is meshed with the second gear (251).

8. The simple ladder vehicle for single-sided high-altitude operation in subway tunnel according to claim 5 is characterized in that: The extension rod (252) is provided with a third arch hole (2521) on the outer wall at one end away from the rotating rod (25), and the width of the third arch hole (2521) matches the diameter of the supporting rod (221). The rotating rod (25) is provided with an outer wall notch (2522) at the top position of the third arch hole (2521), and the width of the outer wall notch (2522) matches the width of the supporting rod (221).

9. A simple ladder vehicle for single-sided high-altitude operation in a subway tunnel according to claim 8, characterized in that: The extension rod (252) is slidably connected to a fixing rod (26) at one end away from the rotating rod (25); the fixing rod (26) is fixedly connected to the extension platform (3); the extension platform (3) is slidably connected to the inner side of the No. 1 support frame (12); and the width of the fixing rod (26) matches the width of the No. 1 arch hole (121); the fixing rod (26) passes through the No. 1 arch hole (121) of the No. 1 support frame (12).

10. The simple ladder vehicle for single-sided high-altitude operation in a subway tunnel according to claim 8, characterized in that: Guardrails are provided on the tops of the lifting platform (15) and the extension platform (3).

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