CN114408059A - Transport device for escalators or pedestrian walkways - Google Patents

Abstract

A transportation device (1) for running on the upper chord of a truss of an escalator or a pedestrian walkway, the transportation device (1) comprising a main frame (10), wherein a left roller (21) for running on the left upper chord of the truss is attached to the left side of the main frame (10), a right roller (22) for running on the right upper chord of the truss is attached to the right side of the main frame (10), the front of the main frame (10) having a connecting member (15) for connecting to a rope (16) of a traction mechanism, such that the transportation device (10) runs on the truss under the traction of the traction mechanism.

Description

Transport device for escalators or pedestrian walkways

Technical Field

The invention relates to the technical field of updating and reforming of escalators or pedestrian walks. And more particularly to a conveyor for running on an escalator truss during modernization of an escalator or walkway.

Background

With the updating and development of the technology of the escalator and the pedestrian walkway, the old escalator or pedestrian walkway needs to be eliminated, and a modernization solution of the escalator or pedestrian walkway is used.

Typically, when modernizing an old escalator or walkway, the old escalator components are removed, but the truss of the escalator remains. The technician then installs new escalator or walkway components on site, for example, installing the upper and lower modules of the escalator on site.

For an escalator or a pedestrian path installed indoors, in most cases, an elevator cannot be used to lift a module from a lower layer to an upper layer due to the fact that the escalator module is too large in size or heavy in weight. In addition, the elevator cannot enter the building to lift the heavy objects.

The prior art solutions have been to disassemble the elevator module into small parts, bring these disassembled parts to the upper level of the escalator or walkway, and assemble them on site. However, repeated disassembly and assembly results in wasted time and cost, and field assembly does not guarantee the accuracy of the assembly of the module, which may result in the performance of the elevator being affected.

It is therefore desirable in practice to provide a solution for lifting an elevator module or other heavy or bulky components directly from the lower level to the upper level without having to first disassemble the module and then take it to the site for re-assembly, thus guaranteeing good accuracy of the elevator components while saving installation time and installation costs.

Disclosure of Invention

The present invention is directed to solving at least one problem posed by the prior art. More specifically, the object of the invention is to provide a transport device for running on an escalator truss during modernization of an escalator or a people path.

The transportation device is used for running on the upper chord of the truss of the escalator or the pedestrian path and comprises a main frame, wherein a left roller used for running on the upper chord on the left side of the truss is attached to the left side of the main frame, a right roller used for running on the upper chord on the right side of the truss is attached to the right side of the main frame, and a connecting member is arranged at the front part of the main frame and used for connecting a rope of a traction mechanism, so that the transportation device runs on the truss under the traction of the traction mechanism.

Based on this technical scheme, the module of escalator or people's walk or other heavy or bulky parts can be promoted to the upper strata from the lower floor through the upper chord of truss through the conveyer, and need not to dismantle into the widget earlier, take the widget to the staircase upper strata again to assemble again at the scene, thereby guarantee the good precision of elevator part, save installation time and installation cost simultaneously.

Optionally, at least one left guide roller is further attached to the left side of the main frame, and at least one right guide roller is further attached to the right side of the main frame, and when the transportation device is positioned on the truss, the left guide roller is positioned at the side of the left upper chord, and the right guide roller is positioned at the side of the right upper chord. When the transporter is accidentally tilted or shaken, the guide rollers contact against the sides of the upper chord, thereby limiting lateral movement of the transporter relative to the truss to prevent the transporter from sliding off the upper chord during operation.

Optionally, the transportation device further comprises an extension frame telescopically connected to the main frame to adjust the transverse width of the transportation device as a whole. The extension frame includes at least one of a left extension frame and a right extension frame, wherein the left extension frame is telescopically connected to a left side of the main frame, the right extension frame is telescopically connected to a right side of the main frame, and wherein the roller and the guide roller are attached to the extension frame.

Alternatively, the pipes of the left and right extension frames can be inserted into the hollow portions of the beams of the main frame and fastened to the main frame by screws, whereby the transportation apparatus can have a more compact structure.

Optionally, the left and right extension frames have oblong holes extending in the transverse direction, the guide rollers are rotatably mounted to guide roller bases attached to the extension frames by screws passing through the oblong holes and movable in the transverse direction in the oblong holes to adjust the transverse position of the guide rollers to fit different upper chord widths.

Optionally, in order to reinforce the connection between the main frame and the extension frame, the transportation device may further include an L-shaped bar having an L-shaped cross section, a length direction of the L-shaped bar being disposed in a transverse direction, one end of the L-shaped bar being fixed to one of the main frame and the extension frame, and the other end of the L-shaped bar having an oblong mounting hole extending in a length direction thereof, the mounting hole being through which a screw may pass and being fixed to the other of the main frame and the extension frame by the screw.

Optionally, the transportation device further comprises a blocking member arranged on the lower side of the main frame for abutting against the cross beam of the truss to prevent the transportation device from accidentally sliding down or rolling over.

Optionally, the blocking member is pivotally mounted to a blocking member base on the main frame and is pivotable between an avoidance position and an abutment position.

And in the avoidance position, the upper arm of the blocking component rotates towards the front of the running direction of the transportation device, the lower arm of the blocking component rotates towards the rear of the running direction, the upper arm is not in contact with the stopping part, and the vertical height of the lower arm rises so as to bypass the cross beam of the truss and enable the transportation device to run normally upwards.

Wherein in the abutting position, the upper arm of the blocking member abuts against the stopper so that when the transportation device accidentally slips backward, the lower arm of the blocking member abuts against the cross beam of the truss, thereby preventing the transportation device from further sliding backward or rolling over.

Optionally, the blocking member is biased towards the abutment position such that the blocking member spontaneously returns to its initial position after each pass of the transporter by the cross-beam, ensuring that the vertical height of the lower end of its lower arm is less than the vertical height of the cross-beam, thereby ensuring that once the transporter accidentally slips off, the blocking member always contacts the cross-beam against preventing further slippage of the transporter.

Optionally, the transportation device further comprises a lower frame telescopically connected to the lower side of the main frame, the blocking member being indirectly mounted to the main frame by a blocking member base pivotally mounted to the lower frame.

Optionally, the cross beam of the lower frame is connected to the main frame by a lead screw structure. Therefore, the vertical height of the blocking component can be changed along with the up-and-down movement of the lower frame, so that the vertical height of the lower arm lower end of each elevator truss can be kept lower than that of the truss cross beam on elevator trusses of different sizes.

Optionally, the transportation device further comprises a stabilizer bar, a lower end of the stabilizer bar is pivotally connected to the blocking member base, an upper end of the stabilizer bar is provided with a series of holes arranged at intervals along a length direction thereof, and when the position of the blocking member base is adjusted, the stabilizer bar is fixed to the main frame through the corresponding hole in the series of holes, so as to cooperate with the screw structure to adjust the vertical height of the blocking member base in cooperation.

Optionally, the transporting device further comprises an upper frame telescopically connected to an upper portion of the main frame for carrying the transported object, the tube of the upper frame being insertable into a hollow portion of the vertical beam of the main frame and fastened to the main frame by means of screws.

Optionally, the transport device further comprises a widening profile telescopically connected to the upper frame, the widening profile comprising at least one of a left widening profile and a right widening profile, wherein the left widening profile is telescopically connected to the left side of the upper frame and the right widening profile is telescopically connected to the right side of the upper frame. By means of the upper frame and the widening profiles, the transport device can transport objects of large size more easily and adjust the width of the frame according to the specific size of the object.

Optionally, the transportation device further comprises an L-shaped connecting rod having an L-shaped cross section, a length direction of the L-shaped connecting rod being arranged in a transverse direction, one end of the L-shaped connecting rod being fixed to one of the upper frame and the widened section bar, and the other end of the L-shaped connecting rod having an oblong fixing hole extending in a length direction thereof, the fixing hole being penetrated by a screw and fixed to the other of the upper frame and the widened section bar by the screw.

Optionally, it is also possible to provide baffles, tabs and/or uprights at the upper part of the upper frame and/or the widening profiles to prevent the transported parts from sliding off the transport device.

In practice, the technician first adjusts the position of the extension frame, guide rollers, lower frame, stabilizer bar, upper frame, and widening profiles of the transport device in place according to the size of the truss on site and the size of the component to be transported, and then puts the transport device into service.

Drawings

Technical solutions according to embodiments of the present invention will now be described in more detail with reference to the accompanying drawings, wherein the illustrations are for the purpose of showing some exemplary embodiments only and are not intended to limit the invention. In the drawings, the same reference numerals designate the same or corresponding parts. The dimensions and proportions in the figures are also intended to be illustrative only and should not be construed as a limitation of the invention.

Fig. 1 is a side view of a transport device according to the invention when running on a truss of an escalator or a travelator;

fig. 2 is a perspective view of the transportation device according to the present invention while running on a truss of an escalator or a pedestrian walkway, showing the detailed structure of the transportation device and the truss of the escalator or the pedestrian walkway;

FIG. 3 is an enlarged perspective view of a transporter in accordance with the invention, particularly illustrating components of the transporter;

FIG. 4a is a perspective view of a transport device according to the present invention with the lower frame in the stowed position;

FIG. 4b is a perspective view of a transport device according to the present invention with the lower frame in an extended position;

FIG. 5a is a side view of a transport device according to the present invention with the lower frame in the stowed position;

fig. 5b is a side view of the transport device according to the invention with the lower frame in an extended position.

List of reference numerals

1 transport device

10 Main frame

11 left extension frame

12 right extension frame

13 lower frame

14 upper frame

15 connecting member

16 rope

17 lead screw structure

18 stop member

18a upper arm

18b lower arm

19 stop member base

21 left roller

22 right roller

23 left side guide roller

24 right guide roller

25 guide roller base

26 oblong holes

27L-shaped rod

28 mounting hole

29 stabilizer bar

30 left widening section bar

31 right widening section bar

32L-shaped connecting rod

33 fixing hole

Detailed Description

In order to make the objects and advantages of the technical solutions of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments of the present invention. Like reference symbols in the various drawings indicate like elements. It should be noted that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.

Fig. 1 is a side view of a transport device 1 during operation on a truss of an escalator or a walkway. The ropes 16 of the traction mechanism are connected to the connecting members 15 at the front of the main frame 10 of the transportation device so that the transportation device 1 runs upwards in the direction indicated by the arrow in fig. 1 under the action of the traction mechanism. More specifically, one end of the connecting member 15 is attached to the front portion of the main frame, and the other end protrudes forward in the traveling direction of the transportation device, and has a hole through which the rope 16 of the traction mechanism can pass.

Fig. 2 is a perspective view of the transportation device 1 when running on the truss of the escalator or pedestrian walkway, showing the detailed structure of the transportation device 1 and the truss of the escalator or pedestrian walkway, depicting in more detail the relative positional relationship of the various components of the transportation device 1 to the truss.

Fig. 3 is an enlarged perspective view of the transportation device 1 according to the invention, showing in particular the components of the transportation device 1. As shown in fig. 3, the transportation device 1 includes a main frame 10 and a left roller 21 attached to the left side of the main frame, and a right roller 22 attached to the right side of the main frame. The front part of the main frame 10 has a connecting member 15 for connecting a rope 16 of a traction mechanism, such as a winch installed on the upper layer of the truss of the escalator, so that the transportation device 1 travels on the upper chord of the truss under the traction of the traction mechanism.

In order to adapt to the escalator trusses with different sizes, extension frames are further provided on both sides of the main frame 10. In the present embodiment, the extension frame includes a left extension frame 11 and a right extension frame 12. The extension frames 11, 12 are telescopically connected to the main frame 10. The rollers 21, 22 are attached to the extension frames 11, 12 so that the lateral distance between the two side rollers 21, 22 can be adjusted by adjusting the lateral position of the extension frames 11, 12, so that the transportation device 1 can run on escalator trusses of different widths.

As can be seen from fig. 3, the tubes of the extension frames 11, 12 are smaller in size than the beams of the main frame 10, and thus can be inserted into the hollow portions of the beams of the main frame 10 and can be telescopically moved laterally with respect to the main frame 10. The main frame 10 and the extension frames 11, 12 each have a series of threaded holes therein, and when the lateral positions of the extension frames 11, 12 are adjusted in place according to the truss size at the installation site, screws are used to pass through the threaded holes in corresponding positions on the main frame 10 and the extension frames 11, 12, thereby fastening the extension frames 11, 12 to the main frame 10.

In order to reinforce the connection between the main frame 10 and the extension frames 11, 12, an L-shaped bar 27 having an L-shaped cross section is further provided between the outer side of the main frame 10 and the extension frames 11, 12, the L-shaped bar 27 extending in the lateral direction. The outer ends of the L-shaped bars 27 are fixed to the extension frames 11, 12, and the other ends thereof have oblong mounting holes 28 extending in the lateral direction, and when the lateral positions of the extension frames 11, 12 are adjusted in position, the L-shaped bars 27 are fastened to the corresponding positions of the main frame 10 by screws passing through the mounting holes 28.

In the process of upward traveling of the transportation device 1, due to the fact that the transported objects are large in size and heavy in weight, and the left and right mass distribution is not necessarily balanced, the transportation device is subjected to the risk of sliding left and right or turning on one's side. Therefore, the transportation device 1 is further provided with at least one left guide roller 23 on the left side and at least one right guide roller 24 on the right side for limiting the left-right sliding of the transportation device 1 with respect to the upper chord of the truss.

As shown in fig. 3, left guide rollers 23 are disposed on both sides of the left roller 21, and right guide rollers 24 are disposed on both sides of the right roller 22, and have a vertical height lower than that of the left and right rollers 21, 22 when the transportation device 1 is horizontally placed. As shown in fig. 1 and 2, when the transportation device 1 is positioned on the truss, the guide rollers 23, 24 are positioned on both sides of the upper chord, and the vertical height of the lower end thereof is lower than the height of the top surface of the upper chord, accordingly. Thus, when the transportation unit 1 slides left and right with respect to the upper chord, the guide rollers 23, 24 contact against the side of the upper chord to prevent the transportation unit 1 from slipping or rolling over.

In addition, the width of the upper chord of the escalator truss is different. Thus, in order to enable the transport device 1 to accommodate upper chords of different widths, the lateral position of the guide rollers 23, 24 is arranged to be adjustable. As can be seen from fig. 3, the extension frames 11, 12 are provided with oblong holes 26 extending in the transverse direction, the guide rollers 23, 24 are rotatably mounted to guide roller bases 25, the guide roller bases 25 are attached to the extension frames 11, 12 by screws passing through the oblong holes 26 and are movable in the transverse direction in the oblong holes 26. Thus, the lateral position of the guide rollers 23, 24 can be adjusted according to the width of the upper chord to better fit the side of the upper chord.

Further, the transportation apparatus 1 further includes a blocking member 18 provided at a lower portion of the main frame 10, the blocking member 18 being composed of an upper arm 18a and a lower arm 18 b. In the illustrated embodiment, the blocking member 18 is mounted to a blocking member base 19 on the lower frame 13 of the lower portion of the main frame 10. The pipe of the lower frame 13 may be inserted into a hollow portion of the vertical beam of the main frame 10 and connected to the main frame 10 through a screw structure 17, so that the vertical position of the lower frame 13 with respect to the main frame 10 can be adjusted, thereby indirectly adjusting the vertical height of the blocking member 18. The vertical height of the lower end of the lower arm 18b of the blocking member is set so as to be lower than the vertical height of the truss beam when the transportation device 1 is positioned on the upper chord. To enable the transportation device 1 to travel upwards without obstruction, the blocking member 18 is pivotably mounted to the blocking member base 19 and by pivoting passes the cross beam when the transportation device 1 passes the cross beam.

Specifically, as the transporter travels up past the cross beam of the truss, the lower arm 18B of the blocking member contacts the cross beam and is rotated by the cross beam in the direction indicated by arrow B in fig. 5B towards the rear of the direction of travel, thereby correspondingly rotating the upper arm 18a of the blocking member in the direction indicated by arrow a in fig. 5B towards the front of the direction of travel of the transporter. At this time, the blocking member 18 is in the retracted position (shown by the dotted line in fig. 5 b), the upper arm 18a thereof is not in contact with the stopper, and the vertical height of the lowermost end of the lower arm 18b is raised, thereby bypassing the cross member of the truss, so that the transportation device 1 normally operates upward. In this embodiment, the stop against which the upper arm 18a abuts is a cross beam on the lower side of the main frame front.

Since the vertical height of the lower end of the lower arm 18b is lower than the vertical height of the cross beam of the truss when the lower arm 18b of the blocking member is not in contact with the cross beam of the truss during operation of the transportation device 1, when the transportation device 1 accidentally slips back, the lower arm 18b abuts against the cross beam of the escalator truss and, correspondingly, the upper arm 18a of the blocking member abuts against the stopper, thereby preventing the transportation device 1 from slipping back or rolling over further. At this point, as shown in detail in fig. 2 and 5b, the blocking member 18 is in its abutting position (shown in solid lines in fig. 5 b).

In the illustrated example, the transportation device 1 further comprises a stabilizer bar 29, the lower end of which is pivotably connected to the blocking member base 19 and the upper end of which is fastened to the main frame 10, thereby supporting the blocking member base 19 when the blocking member 18 abuts against the cross beam, to function as a stabilizing frame structure. The upper end of the stabilizer bar 29 has a series of holes arranged at intervals in the length direction, and the stabilizer bar 29 is fixed to the main frame 10 through a hole of a corresponding position among the series of holes so as to cooperate with the screw structure 17 to adjust the vertical height of the blocking member base 19 in cooperation when the position of the blocking member base 19 is adjusted.

In addition, in order to enable the transporting device 1 to better adapt to the sizes of different transported objects, the transporting device 1 further comprises an upper frame 14 telescopically connected to the upper part of the main frame 10 for carrying the transported objects. Wherein the pipe of the upper frame 14 may be inserted into the hollow portion of the vertical beam of the main frame 10 and fastened to the main frame 10 by a screw.

In transporting a module of an escalator or a walkway or other large-sized component, it is advantageous for the upper frame 14 to have a greater width. Thus, in the illustrated embodiment, the transport device 1 also comprises a left and a right widening profile 30, 31 telescopically connected to the upper frame 14.

In order to reinforce the connection between the upper frame 14 and the widening profiles 30, 31, an L-shaped connecting rod 32, which is L-shaped in cross section, is also arranged between the outside of the upper frame 14 and the widening profiles 30, 31, the length direction of the L-shaped connecting rod 32 being arranged in the transverse direction. The outer ends of the L-shaped connecting rods 32 are fixed to the extension frames 11, 12, and the other ends thereof have oblong fixing holes 33 extending in the length direction thereof, and when the lateral positions of the widening profiles 30, 31 are adjusted in place, the L-shaped connecting rods 32 are fastened to the corresponding positions of the upper frame 14 by screws passing through the fixing holes 33.

As shown in detail in fig. 3, it is also possible to provide baffles, tabs and/or uprights at the upper part of the upper frame 14 and/or the widening profiles 30, 31 to prevent transported objects from sliding off the transport device 1.

What has been described above in connection with fig. 3 is only one particularly preferred embodiment of the invention. In fact, the transport means capable of achieving the desired objects of the present invention do not necessarily comprise the aforementioned left-extending frame, right-extending frame, lower frame, stabilizer bar or upper frame (and the widened profiles, baffles, tabs and/or uprights connected thereto).

In an alternative embodiment, the rollers 21, 22, the guide rollers 23, 24 and the blocking member 18 may be directly attached to the main frame 10.

In an alternative embodiment, the transportation device 1 may comprise only a single-sided extension frame, i.e. only one of the left and right extension frames 11, 12. For the case of including only the left extension frame 11, the left wheel 21 and the left guide wheel 23 are attached to the left extension frame 11, and the right wheel 22 and the right guide wheel 24 are attached to the main frame 10; in the case of including only the right extension frame 12, the left wheel 21 and the left guide wheel 23 are attached to the main frame, and the right wheel 22 and the right guide wheel 24 are attached to the right extension frame 12.

The number and positions of the rollers and the guide rollers in the drawings are schematic, and in practice, the rollers and the guide rollers may be disposed at any positions on the left and right sides of the main frame 10, at least two rollers may be attached to each side of the frame, and any number of guide rollers may be attached to each side of the frame.

Preferably, the transportation device 1 has pairs of guide rollers attached to the left and right sides of the main frame 10, i.e., the left and right upper chords are provided at both sides thereof when the transportation device 1 is positioned on the truss. Therefore, the transverse position of each pair of guide rollers can be adjusted in a matched mode to fit the two sides of the upper chord, so that each pair of guide rollers clamps the upper chord in the middle, and the running of the transporting device on the truss is guided better.

Alternatively, the transportation device 1 has guide rollers attached to the left and right sides of the main frame 10, which are disposed only inside or only outside. That is, the left side of the main frame 10 is provided with only the left guide roller 23 attached to the inner side of the left upper chord, and the right side of the main frame 10 is provided with only the right guide roller 24 attached to the inner side of the right upper chord; alternatively, only the left guide roller 23 attached to the outer side of the left upper chord is provided on the left side of the main frame 10, and only the right guide roller 24 attached to the outer side of the right upper chord is provided on the right side of the main frame 10.

In the illustrated embodiment, the L-shaped bar 27 is fixed at its outer end to the extension frames 11, 12 and at its other end is fastened to the main frame 10 by screws passing through the mounting holes 28. The reverse configuration is also conceivable, i.e. the inner end of the L-shaped bar 27 is fixed to the main frame 10, while the other end is fastened to the extension frames 11, 12 by means of screws passing through the mounting holes 28. Both of these configurations can function to reinforce the connection between the main frame 10 and the extension frames 11, 12 by providing reinforcing rods.

Similarly, for the L-shaped connecting rod 32, the opposite configuration is also conceivable, i.e. the inner end of the L-shaped connecting rod 32 is fixed to the upper frame 14, while the other end is fastened to the widened profiles 30, 31 by means of screws passing through the fixing holes 33. Both configurations can act to reinforce the connection between the upper frame 14 and the widening profiles 30, 31 by providing connecting rods.

In practice, the technician first adjusts the position of the extension frame, guide rollers, lower frame, stabilizer bar, upper frame, and widening profiles of the transport device in place according to the size of the truss on site and the size of the component to be transported, and then puts the transport device into service.

For example, in fig. 4a and 5a, the lower frame 14 is in the stowed position; in fig. 4b and 5b, the lower frame 14 is in the extended position. It can be seen that the vertical height of the lower frame in the stowed position is lower relative to the stowed position, and the vertical height of the blocking member 18, which is indirectly connected to the lower frame 14, is also lower, so that it is possible to accommodate an escalator truss with a lower beam position.

In order to keep the vertical height of the lower end of the lower arm 18b of the blocking member 18 below the vertical height of the truss beam when it is not in contact with the beam, to ensure that when the transportation device 1 slides backwards, the lower arm 18b of the blocking member always comes into contact against the beam, preventing further sliding of the transportation device, the blocking member 18 is therefore arranged biased towards said abutment position.

Optionally, the biasing of the blocking member 18 towards the rest position is achieved by a resilient member at the junction of the blocking member 18 and the blocking member base 19. The elastic member is, for example, a spring or a torsion spring.

Optionally, the mass of the lower arm 18b of the blocking member is greater than the mass of the upper arm 18a thereof, thereby automatically biasing the blocking member 18 towards the rest position under the influence of gravity.

The lower arm 18b of the blocking member is preferably hook-shaped or L-shaped to provide a more secure fit with the cross-beam in the event of accidental sliding of the transporter.

In this way, each time the blocking member 18 passes around the cross beam, the blocking member 18 can be automatically biased from the retracted position towards the abutment position such that the vertical height of the lower end of its lower arm 18b is lower than the vertical height of the truss cross beam to ensure the abutting engagement of the blocking member 18 with the cross beam upon accidental sliding of the transportation device.

Optionally, the stop against which the upper arm 18a of the blocking member abuts depends on the vertical height at which the blocking member 18 is located. The stopper may be, for example, a part of the main frame, or the blocking member base 19 may have a portion extending vertically upward as a stopper against which the upper arm 18a abuts.

With the transport device described herein, pre-assembled escalator modules or other large-size components can be transported directly to the upper level without the need to disassemble the modules or large-size components into small-size parts and then take them to field assembly. In this way, good accuracy of the pre-assembled module is maintained while saving the costs required for repeated disassembly and assembly. Therefore, the time required by updating and reconstructing the escalator or the pedestrian path is saved, and the good performance of the updated escalator or the pedestrian path is ensured.

In the above, exemplary embodiments of the transportation device proposed by the present invention have been described in detail with reference to the preferred embodiments, however, it will be understood by those skilled in the art that various modifications and changes may be made to the specific embodiments described above, and various combinations of the various technical features and structures proposed by the present invention may be made without departing from the concept of the present invention.

Claims (15)

1. A transportation device (1) for running on the upper chord of a truss of an escalator or a pedestrian walkway, the transportation device (1) comprising a main frame (10), wherein a left roller (21) for running on the left upper chord of the truss is attached to the left side of the main frame (10), a right roller (22) for running on the right upper chord of the truss is attached to the right side of the main frame (10), the front of the main frame (10) having a connecting member (15) for connecting to a rope (16) of a traction mechanism, such that the transportation device (10) runs on the truss under the traction of the traction mechanism.

2. The transportation device (1) according to claim 1, wherein at least one left guide roller (23) is further attached to the left side of the main frame (10), and at least one right guide roller (24) is further attached to the right side of the main frame (10), wherein when the transportation device (1) is positioned on a truss, the left guide roller (23) is positioned at the side of the left upper chord, and the right guide roller (24) is positioned at the side of the right upper chord, so that the lateral movement of the transportation device (1) relative to the truss is limited, and the transportation device (1) is prevented from slipping off the upper chord during operation.

3. The transport device (1) according to claim 2, further comprising an extension frame telescopically connected to the main frame (10), the extension frame comprising at least one of a left extension frame (16) and a right extension frame (12), wherein the left extension frame (11) is telescopically connected to a left side of the main frame (10) and the right extension frame (12) is telescopically connected to a right side of the main frame (10), and wherein the rollers and guide rollers are attached to the extension frame.

4. A transport device (1) according to claim 3, wherein the tubes of the left and right extension frames (11, 12) are insertable into the hollow parts of the beams of the main frame (10) and are fastened to the main frame (10) by screws.

5. A transportation device (1) according to claim 3, wherein the left extension frame (11) and the right extension frame (12) have oblong holes (26) extending in a transverse direction, the guide rollers being rotatably mounted to guide roller bases (25), the guide roller bases (25) being attached to the extension frames by screws passing through the oblong holes (26) and being movable in the transverse direction in the oblong holes (26) for adjusting the transverse position of the guide rollers.

6. A transporting apparatus (1) according to claim 3, further comprising an L-shaped bar (27) having an L-shaped cross section, a length direction of the L-shaped bar (27) being arranged in a lateral direction, one end of the L-shaped bar (27) being fixed to one of the main frame (1) and the extension frame (11, 12), the other end of the L-shaped bar (27) having an oblong mounting hole (28) extending in a length direction thereof, the mounting hole (28) being adapted to be passed by a screw and being fixed to the other of the main frame (10) and the extension frame (11, 12) by the screw.

7. A transportation device (1) according to claim 1, further comprising a blocking member (18) arranged on the underside of the main frame (10) for abutting against a cross beam of a truss to prevent the transportation device from accidentally slipping down or rolling over.

8. A transportation device (1) according to claim 7, wherein the blocking member (18) is pivotably mounted to a blocking member base (19) on the main frame (10) and pivotable between an avoidance position and an abutment position,

wherein in the retracted position, the upper arm (18a) of the blocking member rotates towards the front of the running direction of the transportation device (1), the lower arm (18b) of the blocking member rotates towards the rear of the running direction, the upper arm (18a) is not in contact with a stop, the vertical height of the lower arm (18b) rises so as to bypass the cross beam of the truss, and the transportation device (1) normally runs upwards,

wherein in the abutting position the upper arm (18a) of the blocking member abuts against the stop so that when the transportation device (1) accidentally slips backwards, the lower arm (18b) of the blocking member abuts against the cross beam of the truss, thereby preventing the transportation device from sliding further backwards or rolling over.

9. The transportation device (1) of claim 8, wherein the blocking member (18) is biased towards the abutting position.

10. The transport device (1) according to claim 8, further comprising a lower frame (13), wherein the lower frame (13) is telescopically connected to the lower side of the main frame (10), the blocking member (18) being indirectly mounted to the main frame (10) by a blocking member base (19) pivotally mounted to the lower frame (13).

11. The transport device (1) according to claim 10, wherein the cross beams of the lower frame (13) are connected to the main frame (10) by a lead screw structure (17).

12. The transportation device (1) according to claim 10, further comprising a stabilizer bar (29), wherein a lower end of the stabilizer bar (29) is pivotably connected to the blocking member base (19), an upper end of the stabilizer bar (29) has a series of holes arranged at intervals in a length direction, and the stabilizer bar (29) is fixed to the main frame (10) through a hole of a corresponding position of the series of holes when the position of the blocking member base (19) is adjusted.

13. A transporting arrangement (1) according to claim 1, further comprising an upper frame (14) telescopically connected to the upper part of the main frame (10) for carrying the transported object, wherein the tubes of the upper frame (14) can be inserted into the hollow parts of the vertical beams of the main frame (10) and fastened to the main frame (10) by means of screws.

14. A transportation device (1) according to claim 13, further comprising a widening profile telescopically connected to the upper frame (14), the widening profile comprising at least one of a left widening profile (30) and a right widening profile (31), wherein the left widening profile (30) is telescopically connected to the left side of the upper frame (14) and the right widening profile (31) is telescopically connected to the right side of the upper frame (14).

15. A transporting arrangement (1) as claimed in claim 14, further comprising an L-shaped connecting rod (32) having an L-shaped cross-section, the length direction of the L-shaped connecting rod (32) extending in a transverse direction, one end of the L-shaped connecting rod (32) being fixed to one of the upper frame (14) and the widening profiles (30, 31), the other end of the L-shaped connecting rod (32) having an oblong fixing hole (33) extending in its length direction, the fixing hole (33) being adapted for a screw to pass through and being fixed by a screw to the other of the upper frame (14) and the widening profiles (30, 31).

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