Foldable guide rail ladder stand and maintenance equipment

Abstract

The utility model relates to the technical field of climbing equipment, and provides a foldable guide rail ladder stand and maintenance equipment, the foldable guide rail ladder stand comprises a first guide rail ladder stand, a second guide rail ladder stand and a folding driving mechanism; the second guide rail crawling ladder is rotationally connected with the first guide rail crawling ladder; the folding driving mechanism comprises a linear driving part and a linkage part, the linear driving part is arranged on the first guide rail ladder stand, the linkage part is connected with the linear driving part, and the linkage part is further rotationally connected with the first guide rail ladder stand and the second guide rail ladder stand; when the linear driving component drives the linkage component to move, the linkage component drives the second guide rail ladder stand to rotate around a rotating connection point of the second guide rail ladder stand and the first guide rail ladder stand, so that the second guide rail ladder stand is switched between a folded state and an unfolded state. The guide rail crawling ladder can be switched between the folded state and the unfolded state, when the second guide rail crawling ladder is in the folded state, the second guide rail crawling ladder is stored on the top wall of the pipe gallery, the space in the pipe gallery cannot be occupied, and normal passing of workers is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to climbing equipment technical field especially relates to a kind of foldable guide rail ladder and maintenance equipment. BACKGROUND

[0002] Comprehensive pipe gallery (underground city pipe comprehensive corridor), is built in a tunnel space in city underground, municipal, power, communication, gas, water supply and drainage etc. are integrated, is equipped with special access, hoisting mouth and monitoring system, implements unified planning, design, construction and management.

[0003] Due to the variety of pipeline in pipe gallery, the frequency of maintenance is high. With the increase of pipe gallery excavation depth, it is not only difficult but also very unsafe for maintenance personnel to enter and exit underground pipe gallery through existing vertical shaft, thereby leading to low maintenance efficiency. Therefore, the utility model provides a kind of foldable guide rail ladder. UTILITY MODEL CONTENT

[0004] The first aspect of the utility model provides a kind of foldable guide rail ladder to solve the above technical defects in the prior art, not only facilitate pipe gallery maintenance, but also guide rail ladder can be switched between folding or unfolding state, when the second guide rail ladder is in folding state, the second guide rail ladder is stored in the top wall of pipe gallery, without occupying the space in pipe gallery, facilitating normal passage of staff.

[0005] The second aspect of the utility model provides a kind of maintenance equipment.

[0006] The first aspect of the utility model provides a kind of foldable guide rail ladder, comprising:

[0007] The first guide rail ladder is suitable for being installed to the vertical shaft communicating with pipe gallery;

[0008] The second guide rail ladder is rotatably connected with the first guide rail ladder;

[0009] The folding driving mechanism comprises a linear driving component and a linkage component, the linear driving component is arranged on the first guide rail ladder, the linkage component is connected with the linear driving component, and the linkage component is also rotatably connected with the first guide rail ladder and the second guide rail ladder;When the linear driving component drives the linkage component to move, the linkage component drives the second guide rail ladder to rotate around the rotation connection point with the first guide rail ladder, so that the second guide rail ladder is switched between folding state and unfolding state.

[0010] According to the foldable guide rail ladder provided by the utility model, the linkage component comprises a first connecting rod and a second connecting rod, and the first connecting rod and the second connecting rod are rotatably connected;

[0011] One end of the first connecting rod, which is away from the second connecting rod, is rotationally connected to the linear driving component, and one end of the second connecting rod, which is away from the first connecting rod, is rotationally connected to the second guide rail ladder.

[0012] The linkage component further comprises a third connecting rod, and the lengths of the first connecting rod and the second connecting rod are greater than the length of the third connecting rod.

[0013] The first end of the third connecting rod is rotationally connected to the first guide rail ladder, and the second end of the third connecting rod is rotationally connected to the rotationally connected point of the first connecting rod and the second connecting rod.

[0014] The linear driving component comprises:

[0015] A guide member is arranged on the first guide rail ladder.

[0016] A screw nut pair comprises a screw rod and a nut, the screw rod is arranged in parallel with the guide member, the nut is threadedly connected with the screw rod, the nut is slidably connected with the guide member, and the first connecting rod is rotationally connected with the nut.

[0017] A driving member is drivingly connected with the screw rod.

[0018] The foldable guide rail ladder further comprises a limiting assembly, the limiting assembly is arranged in linkage with the second guide rail ladder, and is adapted to be switched between a first position and a second position along with the second guide rail ladder.

[0019] When the second guide rail ladder is in a folded state, the limiting assembly is located at the first position, and is used for limiting a vehicle body assembly of a maintenance device.

[0020] When the second guide rail ladder is in an unfolded state, the limiting assembly is located at the second position, and is used for avoiding the vehicle body assembly of the maintenance device, so that the vehicle body assembly moves along the first guide rail ladder and the second guide rail ladder.

[0021] The limiting assembly comprises:

[0022] An installation carrier is fixedly connected with the first guide rail ladder.

[0023] A guide main body is arranged on the installation carrier.

[0024] A limiting component is slidably connected with the guide main body, the limiting component is arranged in linkage with the second guide rail ladder through a fourth connecting rod, and is adapted to be switched between a first position and a second position along with the second guide rail ladder.

[0025] The utility model provides a foldable guide rail cat ladder, two groups of limit parts are symmetrically arranged, two groups of limit parts are connected through intermediate connector, fourth connecting rod is rotatably connected with intermediate connector, every group of limit parts includes mechanical limit piece, and one side of mechanical limit piece of any group is equipped with trigger limit piece.

[0026] The utility model provides a foldable guide rail cat ladder, one end of second guide rail cat ladder away from first guide rail cat ladder is provided with limit piece.

[0027] The utility model provides a foldable guide rail cat ladder, first guide rail cat ladder and second guide rail cat ladder all include guide rail body and cat ladder body, guide rail body is located at cat ladder body,

[0028] When second guide rail cat ladder is in unfolded state, the guide rail body of first guide rail cat ladder and the guide rail body of second guide rail cat ladder are butted.

[0029] The utility model discloses a second aspect provides a kind of overhauling equipment, including mobile trolley and the foldable guide rail cat ladder of described, the mobile trolley includes car body main body, car body assembly and additional guide rail, the additional guide rail is arranged in the inside of the car body main body, the car body assembly is driven with additional guide rail cooperation;

[0030] The additional guide rail is suitable for the guide rail body of the foldable guide rail cat ladder, so that the car body assembly moves along additional guide rail and the guide rail body.

[0031] The utility model provides a foldable guide rail cat ladder, first guide rail cat ladder and second guide rail cat ladder are rotatably connected, and folding drive mechanism is arranged between first guide rail cat ladder and second guide rail cat ladder, folding drive mechanism includes linear drive component and linkage component, linear drive component is located at first guide rail cat ladder, linkage component is connected with linear drive component, and linkage component is also connected with first guide rail cat ladder and second guide rail cat ladder, when linear drive component drives linkage component movement, linkage component drives second guide rail cat ladder to rotate around the rotatable connection point of first guide rail cat ladder, to make second guide rail cat ladder switch between folding state and unfolded state. Such setting, foldable guide rail cat ladder is applied to pipe gallery overhaul, not only is convenient to overhaul, and guide rail cat ladder can be switched in folding or unfolded state, when second guide rail cat ladder is in folding state, second guide rail cat ladder is stored in the top wall of pipe gallery, cannot occupy pipe gallery space, and it is convenient for normal passage of staff.

[0032] The maintenance equipment provided by this utility model is suitable for the maintenance of pipe racks. It is very convenient to use and can improve maintenance efficiency. When not in use, the guide rail ladder can be folded and stored, which will not occupy the space of the pipe rack, making it convenient for staff to pass through and escape in dangerous situations, and ensuring high safety. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0034] Figure 1 This is one of the structural schematic diagrams of the foldable guide rail ladder provided in this utility model embodiment.

[0035] Figure 2 yes Figure 1 The diagram shows a partial structural schematic of the foldable guide rail ladder provided in this embodiment of the present invention.

[0036] Figure 3 This is the second structural schematic diagram of the foldable guide rail ladder provided in this embodiment of the utility model.

[0037] Figure 4 yes Figure 3 Enlarged view of part A in the middle.

[0038] Figure 5 This is the third structural schematic diagram of the foldable guide rail ladder provided in this embodiment of the utility model.

[0039] Figure 6 yes Figure 5 Enlarged view of section B in the middle.

[0040] Figure 7 This is a schematic diagram of the structure of the maintenance equipment provided in this embodiment of the utility model.

[0041] Figure 8 This is a schematic diagram of the usage status of the maintenance equipment provided in this embodiment of the utility model.

[0042] Figure label:

[0043] 10. First guide rail ladder;

[0044] 20. Second guide rail ladder; 21. Limiting component; 22. Guide rail body; 23. Ladder body;

[0045] 30, folding driving mechanism; 31, linear driving component; 311, guide member; 312, screw-nut pair; 313, driving member; 32, linkage component; 321, first connecting rod; 322, second connecting rod; 323, third connecting rod;

[0046] 40, limiting assembly; 41, mounting carrier; 42, guide main body; 43, limiting component; 431, mechanical limiting member; 432, trigger limiting member; 44, intermediate connecting body; 45, fourth connecting rod;

[0047] 100, moving trolley; 110, trolley main body; 120, trolley assembly; 130, additional guide rail;

[0048] 200, vertical shaft; 300, pipe gallery. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical scheme and advantages of the utility model more clear, the technical scheme in the utility model will be described clearly and completely below in combination with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without making creative labor belong to the protection scope of the utility model.

[0050] In the description of the embodiments of the present application, it should be explained that unless there is explicit provision and limitation, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium. For the ordinary skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0051] In the embodiments of the present application, unless otherwise explicitly provided and limited, the first feature is "on" or "under" the second feature, which can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0052] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example" or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0053] Due to the variety of engineering pipelines in the pipe gallery, the maintenance frequency is high. With the increase of the excavation depth of the pipe gallery, it is not only difficult but also very unsafe for the maintenance personnel to enter and exit the underground pipe gallery through the existing vertical shaft, thereby resulting in low maintenance efficiency. Although, in the prior art, a power-driven box body running along a rigid guide rail is used to lift or parallelly transport people and goods, such as a traction elevator or a hydraulic elevator.

[0054] Among them, the traction elevator needs a machine room, a car, a counterweight, a car guide rail, a counterweight guide rail and the like, and requires a large installation space, complicated installation and frequent maintenance. The hydraulic elevator needs a hydraulic system, a guide rail system, a car system and the like, and the maintenance of the hydraulic system is complicated and frequent, and the maintenance cost is high. The lifting devices described above are not suitable for being used as lifting devices for pipe gallery maintenance. Therefore, the utility model provides a foldable guide rail ladder stand as a lifting carrier for pipe gallery maintenance, which is used for lifting by a rack and pinion elevator.

[0055] Figure 1 is a structural schematic view of the foldable guide rail ladder stand provided by the utility model embodiment. Figure 2 is Figure 1 is a partial structural schematic view of the foldable guide rail ladder stand provided by the utility model embodiment. Figure 3 is a structural schematic view of the foldable guide rail ladder stand provided by the utility model embodiment. Figure 4 is Figure 3 is an enlarged view of A part in

[0056] Referring to Figures 1 to 4 , the utility model embodiment provides a foldable guide rail ladder stand, which can be folded and applied to a narrow space in a pipe gallery for lifting by a rack and pinion elevator. The foldable guide rail ladder stand comprises a first guide rail ladder stand 10, a second guide rail ladder stand 20 and a folding driving mechanism 30.

[0057] The first guide rail ladder 10 can be fixedly installed on the inner wall of the shaft 200 of the communication pipe gallery 300 through a bolt or the like. The second guide rail ladder 20 is rotationally connected with the first guide rail ladder 10 through a hinge or a pivot or the like, so that the second guide rail ladder 20 can rotate around the rotation connection point relative to the first guide rail ladder 10.

[0058] The folding driving mechanism 30 comprises a linear driving component 31 and a linkage component 32. The linear driving component 31 is arranged on the first guide rail ladder 10, and the linkage component 32 is connected with the linear driving component 31. The linkage component 32 is also rotationally connected with the first guide rail ladder 10 and the second guide rail ladder 20. When the linear driving component 31 drives the linkage component 32 to move, the linkage component 32 drives the second guide rail ladder 20 to rotate around the rotation connection point of the first guide rail ladder 10, so that the second guide rail ladder 20 can be switched between the folded state and the unfolded state.

[0059] When the second guide rail ladder 20 is in the folded state, the second guide rail ladder 20 is folded relative to the first guide rail ladder 10 and is accommodated on the top wall of the pipe gallery 300, so as not to occupy the space in the pipe gallery 300 and to facilitate the staff to pass through.

[0060] When the second guide rail ladder 20 is in the unfolded state, the second guide rail ladder 20 is butted with the first guide rail ladder 10, that is, the second guide rail ladder 20 is flush with the first guide rail ladder 10, so as to form a whole guide rail ladder, and the vehicle assembly 120 of the equipment to be overhauled can be lifted to enter the pipe gallery 300 for overhauling, and the operation is convenient.

[0061] It can be understood that the foldable guide rail ladder provided by the embodiment of the utility model is composed of the rotationally connected first guide rail ladder 10 and second guide rail ladder 20. The folding driving mechanism 30 is arranged between the first guide rail ladder 10 and the second guide rail ladder 20. The folding driving mechanism 30 comprises a linear driving component 31 and a linkage component 32. The linear driving component 31 is arranged on the first guide rail ladder 10, and the linkage component 32 is connected with the linear driving component 31. The linkage component 32 is also connected with the first guide rail ladder 10 and the second guide rail ladder 20. When the linear driving component 31 drives the linkage component 32 to move, the linkage component 32 drives the second guide rail ladder 20 to rotate around the rotation connection point of the first guide rail ladder 10, so that the second guide rail ladder 20 can be switched between the folded state and the unfolded state. In this way, when the foldable guide rail ladder is applied to the pipe gallery overhauling, not only is the overhauling convenient, but also the guide rail ladder can be switched between the folded state and the unfolded state. When the guide rail ladder is in the folded state, the second guide rail ladder 20 is accommodated on the top wall of the pipe gallery 300, so as not to occupy the space in the pipe gallery 300 and to facilitate the staff to pass through.

[0062] Due to the small diameter of the shaft 200 and the small internal space of the pipe gallery 300, if the guide rail ladder is vertically erected in the shaft 200, the internal space of the pipe gallery 300 is occupied, and it is inconvenient for personnel to pass through and escape. Therefore, the guide rail ladder of the utility model can be switched between the folded state and the unfolded state, when the guide rail ladder is in the folded state, the second guide rail ladder 20 is stored in the top wall of the pipe gallery 300, and the space in the pipe gallery 300 is not occupied, and it is convenient for the workers to pass through.

[0063] Continuing to refer to Figures 1 to 4 In some embodiments of the utility model, the linkage component 32 comprises a first connecting rod 321 and a second connecting rod 322, the first end of the first connecting rod 321 is rotationally connected with the linear driving component 31, and the second end of the first connecting rod 321 is rotationally connected with the second connecting rod 322. The first end of the second connecting rod 322 is rotationally connected with the first guide rail ladder 10, and the second end of the second connecting rod 322 is rotationally connected with the second guide rail ladder 20.

[0064] When the linear driving component 31 drives the first connecting rod 321 to move, the first connecting rod 321 pushes the second connecting rod 322 to move, so that the second connecting rod 322 drives the second guide rail ladder 20 to switch between the folded state and the unfolded state.

[0065] Compared with directly using a connecting rod or a driving rod to drive the second guide rail ladder 20 to move, the first connecting rod 321 and the second connecting rod 322 rotationally connected in the embodiments of the utility model can be relatively bent, so as to be more suitable for the space arrangement of the position where the shaft 200 and the pipe gallery 300 intersect.

[0066] Continuing to refer to Figures 1 to 4 In some embodiments of the utility model, the linkage component 32 further comprises a third connecting rod 323, the lengths of the first connecting rod 321 and the second connecting rod 322 are all less than the length of the third connecting rod 323, that is, the third connecting rod 323 is the shortest, and the lengths of the first connecting rod 321 and the second connecting rod 322 are relatively long.

[0067] The first end of the third connecting rod 323 is rotationally connected with the first guide rail ladder 10, and the second end of the third connecting rod 323 is rotationally connected with the rotation connection points of the first connecting rod 321 and the second connecting rod 322. The space occupied by the linkage component 32 can be further reduced, so as to be suitable for the space arrangement of the position where the shaft 200 and the pipe gallery 300 intersect.

[0068] Since the pipe gallery 300 and the shaft 200 are arranged in penetration, that is, the axis of the pipe gallery 300 and the axis of the shaft 200 are perpendicular to each other, when the first guide rail ladder 10 is installed to the inner wall of the shaft 200, the second guide rail ladder 20 is rotationally connected with the first guide rail ladder 10. When the second guide rail ladder 20 is in the folded state, the first connecting rod 321 and the second connecting rod 322 are desirably arranged in perpendicular to each other, but such arrangement is prone to generate a rotation dead angle, therefore, the first connecting rod 321 and the second connecting rod 322 are arranged in perpendicular to each other, which not only enables the first connecting rod 321 and the second connecting rod 322 to rotate smoothly, but also reduces the space occupied by the first connecting rod 321 and the second connecting rod 322 during movement.

[0069] Therefore, the third connecting rod 323 is adopted to position the hinging points of the first connecting rod 321 and the second connecting rod 322 on the frame of the first guide rail ladder 10, which can improve the stability of the movement of the first connecting rod 321 and the second connecting rod 322. When the second guide rail ladder 20 is switched between the folded state and the unfolded state, the first connecting rod 321 and the second connecting rod 322, and the connecting lines between the connecting points of the two guide rail ladders respectively form a virtual triangle, the first connecting rod 321 and the second connecting rod 322 serve as two adjacent sides of the virtual triangle, and the included angle between the first connecting rod 321 and the second connecting rod 322 forms an obtuse angle, so as to approach the included angle between the first guide rail ladder 10 and the second guide rail ladder 20 when the second guide rail ladder 20 is in the folded state, thereby reducing the space occupied by the first connecting rod 321 and the second connecting rod 322 during movement, and avoiding the interference between the first connecting rod 321 and the second connecting rod 322 and the shaft 200 or the pipe gallery 300 during movement.

[0070] It should be noted that the hinging seats can be arranged on the frame or the vertical beam of the guide rail ladder body of the first guide rail ladder 10 and the second guide rail ladder 20, so as to rotationally connect the first connecting rod 321 and the second connecting rod 322 with the corresponding hinging seats. For example, the first hinging seat and the third hinging seat are arranged on the frame of the first guide rail ladder 10, the first connecting rod 321 is rotationally connected with the first hinging seat, and the third connecting rod 323 is rotationally connected with the third hinging seat; the second hinging seat is arranged on the second guide rail ladder 20, and the second connecting rod 322 is rotationally connected with the second hinging seat.

[0071] Continuously referring to Figures 1 to 4 In some embodiments of the utility model, the straight line driving component 31 comprises a driving piece 313, a screw nut pair 312 and a guide piece 311.

[0072] The guide piece 311 can be a guide rail or a guide rod structure, and the guide piece 311 is fixed on the frame of the first guide rail ladder 10 by means of a countersunk bolt structure.

[0073] The screw-nut pair 312 comprises a screw and a nut, the screw is arranged in parallel with the guide 311, the nut is threadedly connected with the screw, and the nut is slidably connected with the guide 311.

[0074] The driving member 313 can be a hand wheel or a motor, and in general, the driving member 313 is a hand wheel, and the screw is manually controlled, and in the case of power supply, the driving member 313 can also be electrically controlled by a motor.

[0075] When the driving member 313 is a hand wheel, the hand wheel is rotated to drive the screw to rotate, so that the nut on the screw moves linearly along the guide 311 to drive the first connecting rod 321 to move, the first connecting rod 321 drives the second connecting rod 322 to move, and the second guide ladder 20 is switched between the folded state and the unfolded state.

[0076] In addition, the linear driving part 31 can also be a synchronous belt linear module and a linear motor module.

[0077] Figure 5 is a structural schematic view of the foldable guide ladder according to the embodiment of the utility model. Figure 6 is Figure 5 is an enlarged view of the B part.

[0078] Continuously refer to Figure 3 and Figure 4 , and simultaneously refer to Figure 5 and Figure 6 In some embodiments of the utility model, the foldable guide ladder further comprises a limiting assembly 40, the limiting assembly 40 is arranged in linkage with the second guide ladder 20, and can be switched between the first position and the second position along with the second guide ladder 20.

[0079] When the second guide ladder 20 is in the folded state, the limiting assembly 40 is located at the first position, at this time, the limiting assembly 40 is located on the moving path of the vehicle assembly 120 of the inspection equipment, and can limit the vehicle assembly 120.

[0080] When the second guide ladder 20 is in the unfolded state, the limiting assembly 40 is located at the second position, at this time, the limiting assembly 40 is located away from the first guide ladder 10, and can avoid the vehicle assembly 120, so that the vehicle assembly 120 smoothly passes through the first guide ladder 10 and enters the second guide ladder 20.

[0081] The limiting assembly 40 comprises a mounting carrier 41, a guide main body 42 and a limiting component 43, the mounting carrier 41 is bolted or welded to the first guide rail ladder 10, the mounting carrier 41 serves as a supporting main body of the guide main body 42 and the limiting component 43, and the mounting carrier 41 can be a plate structure or a frame structure. The guide main body 42 can be a guide rail or a guide rod, and the guide main body 42 is bolted to the mounting carrier 41, the limiting component 43 is in sliding fit with the guide main body 42, and the limiting component 43 and the second guide rail ladder 20 are connected in linkage through a fourth connecting rod 45, that is, the first end of the fourth connecting rod 45 is rotatably connected to the limiting component 43 through a hinge seat, and the second end of the fourth connecting rod 45 is rotatably connected to the second guide rail ladder 20 through a hinge seat.

[0082] When the second guide rail ladder 20 is in the folded state, the fourth connecting rod 45 drives the limiting component 43 to move along the guide main body 42, so that the limiting component 43 is located at the first position, at this time, the limiting component 43 is located on the movement path of the vehicle body assembly 120, and can limit the vehicle body assembly 120.

[0083] When the second guide rail ladder 20 is in the unfolded state, the fourth connecting rod 45 drives the limiting component 43 to move along the guide main body 42, so that the limiting component 43 is located at the second position, at this time, the limiting component 43 is located away from the first guide rail ladder 10, and can avoid the vehicle body assembly 120, so that the vehicle body assembly 120 smoothly passes through the first guide rail ladder 10 and enters the second guide rail ladder 20.

[0084] In some embodiments of the utility model, the limiting component 43 is symmetrically provided with two groups, the two groups of limiting components 43 are connected through an intermediate connecting body 44, and the fourth connecting rod 45 is rotatably connected to the intermediate connecting body 44.

[0085] Each group of limiting components 43 comprises a mechanical limiting piece 431, one side of the mechanical limiting piece 431 of any group is provided with a trigger limiting piece 432, and double limiting is realized.

[0086] When the trigger limiting piece 432 fails, the vehicle body assembly 120 directly mechanically collides on the mechanical limiting piece 431 in the running process, the vehicle body assembly 120 is forced to stop running, the vehicle body assembly 120 is prevented from separating from the first guide rail ladder 10 and directly mechanically colliding to the second guide rail ladder 20, and the guide rail ladder is damaged.

[0087] Continue to refer to Figure 1 and Figure 2 In some embodiments of the utility model, in order to further improve the safety of the foldable guide rail ladder, a limiting piece 21 is arranged at one end of the second guide rail ladder 20 away from the first guide rail ladder 10, and is used for limiting the vehicle body assembly 120. In the running process of the vehicle body assembly 120, the vehicle body assembly 120 is prevented from sliding out of the second guide rail ladder 20, so that a major accident is caused.

[0088] With reference to Figures 1 to 6 In some embodiments of the utility model, the first guide rail ladder 10 and the second guide rail ladder 20 both comprise a guide rail body 22 and a ladder body 23, the guide rail body 22 is installed at the middle part of the ladder body 23 by bolts and the like structure, and the area on both sides of the middle part of the ladder body 23 is used for the staff to climb.

[0089] The guide rail body 22 is used as the transmission medium for bearing the car body assembly 120 and provides the limiting support for preventing the car body assembly 120 from falling at a stall.

[0090] In the utility model, the guide rail body 22 is used as the rigid transmission medium of the car body assembly 120, compared with the flexible transmission medium such as steel wire rope, the safety of the car body assembly 120 is higher during lifting. The guide rail body 22 can provide the limiting support for preventing the car body assembly 120 from falling at a stall, that is, when the car body assembly 120 suddenly falls at a stall during operation, the guide rail body 22 cooperates with the anti-falling device of the car body assembly 120 to be locked on the guide rail body 22, so that accidents are avoided, and the safety of the maintenance equipment is further improved.

[0091] The guide rail body 22 comprises a first guide rail and a second guide rail, the first guide rail is provided with a containing groove along the axial direction thereof, and the groove opening of the containing groove extends outward to form a driving part and a positioning part respectively; the second guide rail can be embedded in the containing groove and forms the guide rail body 22 together with the first guide rail, and the anti-falling hole is provided on the second guide rail along the axial direction thereof and is spaced apart.

[0092] That is, the first guide rail is used as the bearing guide rail, the second guide rail is used as the anti-falling guide rail, the two guide rails are nested and combined, the bearing guide rail bears the main load of the lifting device, the anti-falling guide rail is embedded in the bearing guide rail and is connected with the anti-falling device of the car body assembly 120, so that the anti-falling locking of the car body assembly 120 can be realized, and the strength and rigidity of the guide rail body 22 can be strengthened.

[0093] Figure 7 It is the structure schematic view of the maintenance equipment provided by the utility model embodiment. Figure 8 It is the use state schematic view of the maintenance equipment provided by the utility model embodiment.

[0094] With reference to Figure 7 And Figure 8The utility model also provides a kind of overhauling equipment, and overhauling equipment includes movable dolly 100 and the foldable guide rail ladder of any one of above, movable dolly 100 includes car body main body 110, car body assembly 120 and additional guide rail 130, car body main body 110 can be set as rectangular frame structure, mobile wheel is provided at the bottom of car body main body 110, additional guide rail 130 and the structure of the guide rail body 22 of the first guide rail ladder 10 and the second guide rail ladder 20 are identical, additional guide rail 130 is installed in the inside of car body main body 110, and car body assembly 120 is driven with additional guide rail 130.

[0095] Car body assembly 120 is arranged at one side of guide rail body 22, and is movably connected with guide rail body 22.For example, car body assembly 120 can be rollingly connected with guide rail body 22 by means of guide wheels and anti-falling wheels, so that car body assembly 120 can move up and down along the extension direction of guide rail body 22, and car body assembly 120 will not be separated from guide rail body 22.

[0096] Car body assembly 120 further includes a housing, a control handle, a handrail rod, a layer selection button, a pedal assembly, a lower contour limiting device, a guide wheel assembly, an anti-separation device, a drive gear, an anti-falling device, a pressure roller, an upper limit switch, an upper limit limit switch, a lower limit switch and a lower limit limit switch arranged on the housing, and a motor reducer assembly, an electric control box and an emergency power supply arranged in the housing.

[0097] When overhauling equipment needs to be overhauled, movable dolly 100 is pushed to the wellhead position of vertical shaft 200 corresponding to pipe gallery 300, and then additional guide rail 130 of movable dolly 100 is connected with guide rail body 22 of foldable guide rail ladder.

[0098] During the connection process of the two guide rails, a connecting component can be used for connection, the connecting component includes a connecting piece and a fixing piece, the connecting piece is arranged in one of additional guide rail 130 and guide rail body 22 of first guide rail ladder 10, and the other one of additional guide rail 130 and guide rail body 22 of first guide rail ladder 10 is detachably connected with the connecting piece by means of the fixing piece.The connecting piece can be independently arranged or integrally formed with one of the two guide rails.The fixing piece can be a lifting ring screw, or a combination of a bolt and a lifting ring nut, which has high strength and corrosion resistance, and the lifting ring screw, or the combination of the lifting ring nut and the bolt, is passed through the mounting hole at the position of the connecting plate during the installation process, and one of the two adjacent guide rails is fixed with the connecting plate.The installation process can be operated manually without the need for auxiliary installation tools, and the operation is more convenient.

[0099] When the car assembly 120 moves along the guide rail body 22, the anti-falling device is in a closed state at a normal speed, that is, the centrifugal block is stored in the anti-falling device; when the car assembly 120 moves downward along the guide rail body 22, the speed measuring wheel rotates along the guide rail body 22 and drives the centrifugal block to rotate, and when the lifting device falls at a stall speed, the centrifugal block is thrown outward to overcome the tension of the spring and is locked in the anti-falling hole in an instant.

[0100] The utility model discloses the integration design, install one section fast dress's additional guide rail 130 in mobile trolley 100, after the additional guide rail 130 and the guide rail body 22 of first guide rail ladder 10 of mobile trolley 100 self-attached are connected in butt joint in the maintenance field, the car assembly 120 can run after electrification, and the maintenance can be convenient, and the installation man-hour required in maintenance can be convenient.

[0101] And, the foldable guide rail ladder can be switched between the folded state and the unfolded state, when the guide rail ladder is in the folded state, the second guide rail ladder 20 is stored in the top wall of the pipe gallery 300, and the narrow space in the pipe gallery 300 is not occupied, and the normal traffic of the staff is facilitated.

[0102] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A foldable rail ladder, characterized in that, The utility model relates to a first guide rail ladder is suitable for installing to the shaft of intercommunication pipe gallery, and the second guide rail ladder is rotatably connected with the first guide rail ladder. The utility model relates to a folding driving mechanism including linear driving part and linkage part, the linear driving part is equipped in the first guide rail ladder, the linkage part is connected with the linear driving part, and the linkage part is also rotatably connected with the first guide rail ladder and the second guide rail ladder, when the linear driving part drives the linkage part movement, the linkage part drives the second guide rail ladder to rotate around the rotatable connecting point of the first guide rail ladder, to make the second guide rail ladder switch between folding state and unfolding state. The linkage part includes first connecting rod and second connecting rod, and the first connecting rod and the second connecting rod are rotatably connected. The first connecting rod is rotatably connected with the linear driving part at one end away from the second connecting rod, and the second connecting rod is rotatably connected with the second guide rail ladder at one end away from the first connecting rod.

2. The foldable rail ladder of claim 1, wherein, The linkage part further includes a third connecting rod, and the lengths of the first connecting rod and the second connecting rod are both greater than the length of the third connecting rod. The first end of the third connecting rod is rotatably connected with the first guide rail ladder, and the second end of the third connecting rod is rotatably connected with the rotatable connecting point of the first connecting rod and the second connecting rod.

3. The foldable rail ladder of claim 2, wherein, The linear driving part includes: a guide member provided on the first guide rail ladder; 4. The foldable rail ladder of claim 2 wherein, a screw-nut pair including a screw rod and a nut, the screw rod is arranged in parallel with the guide member, the nut is threadedly connected with the screw rod, the nut is slidably connected with the guide member, and the first connecting rod is rotatably connected with the nut; a driving member in transmission cooperation with the screw rod. Further comprising a limiting assembly, the limiting assembly is arranged in linkage with the second guide rail ladder, and is adapted to switch between a first position and a second position along with the second guide rail ladder; when the second guide rail ladder is in the folding state, the limiting assembly is located at the first position, and is used for limiting a car body assembly of a maintenance device; 5. The foldable rail ladder of claim 1, wherein, when the second guide rail ladder is in the unfolded state, the limiting assembly is located at the second position, and is used for avoiding the car body assembly of the maintenance device, so that the car body assembly moves along the first guide rail ladder and the second guide rail ladder. The limiting assembly includes: a mounting carrier fixedly connected with the first guide rail ladder; 6. The foldable rail ladder of claim 5, wherein, a guide main body provided on the mounting carrier; a limiting member in sliding cooperation with the guide main body, the limiting member is arranged in linkage with the second guide rail ladder through a fourth connecting rod, and is adapted to switch between a first position and a second position along with the second guide rail ladder. The limiting member is symmetrically provided with two groups, and the two groups of limiting members are connected through an intermediate connecting body, and the fourth connecting rod is rotatably connected with the intermediate connecting body; each group of limiting members includes a mechanical limiting piece, and one side of the mechanical limiting piece of any group is provided with a trigger limiting piece.

7. The foldable rail ladder of claim 6, wherein, The second guide rail ladder is provided with a limiting piece at one end away from the first guide rail ladder. The first guide rail ladder and the second guide rail ladder both include a guide rail body and a ladder body, and the guide rail body is provided on the ladder body.

8. The foldable rail ladder of any one of claims 1 to 7, wherein, ​ 9. The foldable rail ladder of any one of claims 1 to 7, wherein, ​ The rail body of the first rail ladder and the rail body of the second rail ladder are butted when the second rail ladder is in the unfolded state.

10. An access device, characterized in that The mobile trolley comprises a trolley body, a trolley assembly and an additional rail, the additional rail is arranged on the inner side of the trolley body, and the trolley assembly is in transmission cooperation with the additional rail; The additional rail is suitable for butting the rail body of the foldable rail ladder, so that the trolley assembly performs lifting movement along the additional rail and the rail body.

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