Folding doors, cages and construction hoists

Abstract

The application belongs to the field of engineering machinery and discloses a folding door, a cage and a construction hoist. The folding door comprises a door body, a tubular door lock assembly and a movable door body. The tubular door lock assembly is arranged on the vertical outer side of the movable door body and comprises a nested outer sleeve and an inner sleeve. The outer sleeve is provided with a through lock hole, and the inner sleeve is provided with a lock hook. The inner sleeve can move vertically in the outer sleeve and make the lock hook horizontally align with the through lock hole, so that the door hook extending from the through lock hole can be locked with the lock hook. The inner push type folding door can avoid occupying more space when being opened outward. The folding door adopts a mechanical locking structure, which is more reliable and stable and will not be opened due to any accident. The inner push type folding door can make the cage occupy less space and is more conducive to the miniaturization design of the cage and the construction hoist.

Description

Technical Field

[0001] This application belongs to the field of construction machinery, specifically relating to a folding door, a hoist cage, and a construction hoist. Background Technology

[0002] Construction hoists are one of the important special equipment used on construction sites to transport people or materials to higher places. For example... Figure 1 As shown, the construction hoists currently used on construction sites are generally large in size, and their attachment devices require a large attachment width. Moreover, the assembly of construction hoists is relatively complex and requires a large amount of space.

[0003] However, in some applications, the ground space or lifting space is limited, or only a small number of people or materials need to be transported to a higher position at a time. In these cases, there is a demand for miniaturized and lightweight construction hoists. The miniaturization design of hoists suitable for small spaces should not only consider the hoist's own dimensions and the external dimensions of its auxiliary devices, but also make adaptive adjustments to components such as door locks. For example, the commonly used outward-opening doors of existing hoists require more external space when opened, while grille-type sliding doors, although not requiring external space, are difficult to push and move manually, and are prone to jamming and other malfunctions after long-term use, resulting in low safety and reliability. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies, this application discloses a folding door, a cage, and a construction hoist, which are suitable for use in small spaces and are highly flexible, safe, and reliable.

[0005] To achieve the above objectives, in a first aspect, this application provides a folding door, comprising: Doors, including foldable pivot doors and movable doors; A tubular door lock assembly is disposed on the vertical outer side of the movable door and includes a nested outer sleeve and an inner sleeve. The outer sleeve has a through lock hole, and the inner sleeve has a lock hook. The inner sleeve can move vertically within the outer sleeve and align the lock hook laterally with the through lock hole, so that the door hook extending through the through lock hole can lock with the lock hook.

[0006] In some embodiments, the outer sleeve has a transverse through-hole extending vertically in the middle, the inner sleeve has a transverse through-hole pin hole in the middle, and the tubular door lock assembly further includes a pin handle that is detachably connected to the pin hole and the elongated hole.

[0007] In some embodiments, when the inner sleeve moves the pin handle downward and supports it at the bottom end of the elongated hole of the outer sleeve, the locking hook can lock the door hook to form a lock.

[0008] In some embodiments, the inner sleeve includes an inner tube segment with a plurality of rolling balls distributed around its periphery. When the inner tube segment is fitted into the outer sleeve, each of the rolling balls abuts against the inner wall of the outer sleeve.

[0009] In some embodiments, both the inner tube section and the outer tube are square tubes with rectangular cross-sections, and the rolling ball is a universal ball.

[0010] In some embodiments, the locking hook is a U-shaped locking hook that opens toward the middle of the pipe section, and the outer contact surface of the U-shaped locking hook and / or the outer contact surface of the door hook are both formed with guide contact slopes.

[0011] In some embodiments, the pivot door includes a pivot edge and a first hinge edge located on both sides of the door body laterally, and the movable door includes a translation edge and a second hinge edge located on both sides of the door body laterally, wherein the first hinge edge is hinged to the second hinge edge by a hinge. The tubular door lock assembly is installed on the sliding side of the door body, and guide wheels are provided at both ends of the sliding side of the door body.

[0012] In a second aspect, this application provides a hoist cage for use in a construction hoist, the hoist cage comprising: The car; The aforementioned folding door is located on one side of the car.

[0013] In some embodiments, the vertical outer side of the folding door where the tubular door lock assembly is installed is provided with a folding door limit stop, and the cage is provided with a door limit switch; In the unfolded and locked state of the folding door, the lock hook locks the door hook, and the folding door limit stop presses against the swing arm of the door limit switch; in the folded and open state of the folding door, the lock hook disengages from the door hook, the folding door limit stop releases the swing arm of the door limit switch, thereby triggering the door limit switch and generating a stop signal.

[0014] In some embodiments, the folding door mounting side of the car is formed with a four-sided door frame surrounding the folding door, the horizontal frame of the four-sided door frame is provided with a guide groove, the pivot door body is pivotally mounted on the first vertical frame of the four-sided door frame, and the second vertical frame of the four-sided door frame is provided with a door hook that engages with the lock hook.

[0015] In some embodiments, a limiting buffer pad is provided at one end of the guide groove near the first vertical frame.

[0016] In a third aspect, this application also provides a construction hoist, which includes the aforementioned cage.

[0017] This application introduces an inward-pushing folding door to avoid requiring more space when opened outwards. The folding door employs a mechanical locking structure, which is more reliable and stable, and will not open due to any accidents. The inner sleeve of the tubular door lock assembly can move vertically within the outer sleeve and align the lock hook laterally with the through lock hole, so that the door hook extending through the lock hole can lock with the lock hook, and can then be locked by the weight of the inner sleeve, forming a lock. This inward-pushing folding door is flexible in use, safe and reliable, and allows the hoist cage to occupy less space, which is more conducive to the miniaturization design of hoist cages and construction hoists.

[0018] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0019] The accompanying drawings are provided to illustrate the present application and form part of the specification. They are used together with the following detailed description to explain the present application, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a structural diagram of a common construction hoist in existing technology; Figure 2 This is a structural schematic diagram of a construction hoist according to a specific embodiment of this application; Figure 3 , Figure 4 These are schematic diagrams of the cage according to a specific embodiment of this application, viewed from different perspectives. Figure 5 for Figure 3 , Figure 4 A schematic diagram of the vertical support frame of the suspended cage shown; Figure 6 This is a structural diagram of the cage assembly installed on the guide rail frame according to a specific embodiment of this application; Figure 7 , Figure 9 The external and internal structures of the cage car according to a specific embodiment of this application are shown respectively; Figure 8 for Figure 7 The enlarged view of part A in the diagram shows the door hook. Figure 10 for Figure 9 The enlarged diagram of part B shows the limiting buffer pad. Figure 11 for Figure 7 The enlarged schematic diagram of part C in the diagram shows the installation structure of the sunroof limit switch; Figure 12 for Figure 11 The enlarged schematic diagram of part D in the diagram shows the locking structure of the sunroof. Figure 13 This is a three-dimensional structural schematic diagram of the cage release device in the cage assembly according to a specific embodiment of the present application; Figure 14 , Figure 15 The diagram shows structural schematics of a folding door according to a specific embodiment of this application from different perspectives. Figure 16 for Figure 15 The enlarged schematic diagram of part E in the diagram shows the mounting structure of the pin handle in the tubular door lock assembly. Figure 17 This is a schematic diagram of the structure of the inner sleeve in the tubular door lock assembly of a folding door according to a specific embodiment of this application; Figure 18 The illustration shows the sliding fit structure of the inner sleeve in the outer sleeve of the tubular door lock assembly of a folding door according to a specific embodiment of the present application.

[0020] Explanation of reference numerals in the attached figures Detailed Implementation

[0021] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this application.

[0022] The cage and construction hoist according to this application are described below with reference to the accompanying drawings.

[0023] like Figure 2 As shown, this application discloses a novel construction hoist, including a rack-and-pinion guide rail frame 2 and a cage assembly that moves up and down along the guide rail frame 2. The cage assembly includes a cage 5 and a separate drive system 4 for driving the cage 5 up and down. The guide rail frame 2 is equipped with a lifting limit stop 3 and a top section 1. A tower climbing platform 7 is installed on the side of the cage assembly's bridge car, moving up and down with the cage. A base frame railing 6 and attachment devices 8 are installed against the standard section of the tower crane or the building. The construction hoist of this application adopts a miniaturized and modular design, compared to... Figure 1 The construction hoist shown has a smaller footprint for both the cage and the overall structure, and is easier to assemble and maintain, which will be explained in detail below.

[0024] First, this application designs a novel hoist cage for use in passenger-carrying construction elevators. For example... Figure 3 , Figure 4 , Figure 5 As shown, a cage 5 in one specific embodiment includes: The vertical support frame 53 includes mutually perpendicular vertical supports and horizontal supports; The car 52 is supported by a vertical support and its bottom is detachably and securely mounted on a horizontal support; The cage top guardrail 51 is installed around the perimeter of the top panel of the car 52.

[0025] This application aims to design a lightweight, modular, detachable and assembleable hoist cage 5 suitable for different specifications of bridge carriages. It mainly comprises three modules: a cage top guardrail 51, a car 52, and a vertical support frame 53 (i.e., an L-bracket). These three modules are detachable and assembleable. A lightweight, miniaturized car 52 can be installed, for example, with bottom bolts. Figure 5 The car 52 can also be selectively and further secured to the vertical support frame 53 on the horizontal bracket of the vertical support frame 53 to achieve a stable installation. The cage top guardrail 51 can be detachably installed on the top of the car 52 to provide shelter and protection for the car 52.

[0026] The car 52 is a cubic box shape with all side panels made of stainless steel, thus achieving both sturdiness and reliability while minimizing weight. The vertical support frame 53 provides structural support, compensating for the structural weakness of the stainless steel car 52. The width of the car 52 is generally no greater than the width of the vertical support frame 53, resulting in a small footprint and suitability for small construction hoists with low load capacity.

[0027] To achieve lightweight design, both the vertical and horizontal supports of the vertical support frame 53 can be rectangular frames, ensuring structural strength while minimizing the use of steel bars. Simultaneously, the cage top guardrail 51 can be connected to the top of the vertical supports, allowing the vertical support frame 53 to serve as the framework for modular assembly of the cage 5, achieving miniaturization and lightweight design as much as possible.

[0028] like Figure 7 As shown, the top panel of the car 52 may be equipped with a skylight 521, and the inner side of the side panels of the car 52 is provided with multiple vertically spaced step bars 525 for climbing to the skylight 521. The skylight can serve as an emergency escape exit, acting as a temporary escape exit when the side doors of the car 52 cannot be opened. The multiple step bars 525 are arranged at intervals from bottom to top, facilitating escapees inside the car 52 to climb sequentially and finally open the skylight 521 to escape.

[0029] The skylight 521 needs to be locked during normal operation and only opened when needed, therefore a door and window lock needs to be installed. See also: Figure 7 , Figure 11 At the top of the car 52, a sunroof lock groove 522 is provided on the side of the sunroof 521, which is to fix the convex handle to the side of the door or window to form a lock groove. Correspondingly, the sunroof 521 may be equipped with a sunroof lock 5212, which can be rotated to be screwed into or out of the sunroof lock groove 522 to lock or unlock.

[0030] Considering that in an emergency escape, no one outside may be able to assist in unlocking the lock, the sunroof lock 5212 in this embodiment has a lock hole with an opening facing into the car. Thus, personnel inside the cage can insert an emergency key (such as a common triangular key) into the lock hole, causing the sunroof lock 5212 to rotate and unscrew the sunroof lock slot 522, thereby unlocking the car.

[0031] Additionally, the sunroof 521 may also be equipped with a sunroof limit switch 5211, see [link / reference] Figure 11 , Figure 12 . Figure 11 The skylight limit switch 5211 shown in section D is located below the skylight 521, or in other words, it is located inside the skylight 521. The skylight limit switch 5211 is configured to be triggered when the skylight 521 is open; that is, when the skylight 521 is open, the window no longer presses against the limit lever of the skylight limit switch 5211, thus generating a trigger signal, such as... Figure 11 As shown, at this time, the limit lever of the sunroof limit switch 5211 is extended in a roughly vertically upward position. The sunroof limit switch 5211 is electrically connected to the electronic control system, thereby assisting the electronic control system in determining the opening and closing status of the sunroof.

[0032] Under normal circumstances, the sunroof 521 is in the closed state. At this time, the limit lever of the sunroof limit switch 5211 installed on the car is pressed down by the window body of the sunroof 521, and is in a closed state. Figure 12 In the untriggered state shown, the limit lever of the sunroof limit switch 5211 is in a roughly horizontal pressed state. The sunroof lock 5212 is in the closed state, located directly below the sunroof lock slot 522. At this time, the sunroof 521 cannot be opened, and the construction hoist can operate normally.

[0033] In case of an emergency and the side door of car 52 cannot be opened normally, the people inside car 52 can climb to the top of car 52 using the step bar 525 and use the triangular key to climb up... Figure 11 Rotating the skylight lock 5212 clockwise as shown causes it to disengage from the skylight lock groove 522, thus allowing the skylight 521 to be opened smoothly for escape from the top of the cage. Once the skylight 521 is open, the window no longer presses against the limit lever of the skylight limit switch 5211, at which point... Figure 12 As shown, the limit lever of the sunroof limit switch 5211 automatically rotates counterclockwise, triggering the sunroof limit switch 5211 and sending a signal to the electrical control system, causing the cage to malfunction.

[0034] While minimizing the size of the elevator car 52, this embodiment incorporates a horizontally sliding folding door 528 on one side of the car 52 to avoid hindering door opening and closing in confined spaces. The folding door 528 can fold inwards or unfold horizontally. This design helps avoid encroaching on external space, making it more suitable for operation in narrow elevator passageways. Furthermore, the folding door 528 includes a viewing window 5283 for outward observation, which helps to observe and alleviate the anxiety of passengers in the confined space. The specific design of the folding door 528 in this embodiment will be described in detail below.

[0035] See Figure 5 The top of the vertical support frame 53 has a power connection part, namely the safety hook 538 shown in the figure, etc. The power connection part is used to connect the lifting drive unit 413 that drives the lifting of the cage 5. See Figure 6 The bottom end of the split drive system 4 is detachably connected to the top of the vertical support frame 53. Then, the split drive system 4 and the vertical support frame 53 are connected to the rack and pinion guide frame 2 through rollers, etc., and rise and fall along the guide frame 2 under the action of the lifting drive unit 413.

[0036] As can be seen, this application, through its modular structural design of the hoist cage, facilitates on-site disassembly and assembly, and enables a lightweight design. The vertical support frame 53 maintains overall structural strength, while the steel plate assembly of the car achieves miniaturization and weight reduction, resulting in a small footprint. The length and width dimensions of the hoist cage are limited by the width of the vertical support frame 53 and the length of the transverse supports. The folding door design also allows the door to open inwards, thus not occupying limited installation space. The skylight design and its communication design with the electrical control system serve as an emergency escape exit and escape measure, effectively ensuring the safe operation of the hoist cage.

[0037] This application also discloses a cage assembly. For example... Figure 6 , Figure 9 , Figure 13 As shown, in one specific embodiment, the cage assembly includes: The hoist cage 5 includes a vertical support frame 53 and a car 52 detachably mounted on the vertical support frame 53; The split drive system 4 is detachably connected to the top of the vertical support frame 53 and includes a lifting drive unit 413 for driving the cage 5 to rise and fall. The cage release device 527 includes an operating end installed inside the car 52, which is connected to the brake lever of the lifting drive unit 413 via a steel wire rope 5273.

[0038] In the hoisting cage assembly of this application, after the split-type drive system 4 is detachably installed on the top of the vertical support frame 53, the hoisting cage assembly can be installed as a whole on the guide rail frame 2 and raised and lowered along the guide rail frame 2. At this time, if emergency braking is required, it is necessary to control the lifting drive unit 413 to stop. Those skilled in the art will understand that one method is an electric control braking form, that is, an emergency stop signal is sent to the electric control system, and the electric control system brakes the lifting drive unit 413 according to the signal. However, in special circumstances, the entire electric control system may also malfunction, such as in the event of a power outage, so the electric control method is also unreliable. Another method is a mechanical braking form, such as the cage-in-cage release device 527 used in this application. In an emergency, the personnel in the car 52 can activate the control terminal in the car 52, and then directly control the brake lever of the lifting drive unit 413 through the wire rope 5273 to mechanically brake the motor.

[0039] Obviously, the cage-in-cage brake release device 527, as a mechanical braking method, can have various mechanical structures, such as a complex and costly transmission rod structure or gear transmission mechanism. However, considering that the split drive system 4 in this application is detachably installed on the top of the vertical support frame 53, in other words, different specifications of the lifting drive unit 413 can be replaced, or the installation height of the device can be adjusted, the installation position of the lifting drive unit 413 has a certain degree of flexibility. Therefore, as an example, this embodiment adopts a winch-structured cage-in-cage brake release device. That is, the cage-in-cage brake release device 527 includes a winch 5272 installed inside the car 52. The winch 5272 is installed on the side panel of the car 52. The bottom end of the wire rope 5273 is wound around the winch 5272, and the top end of the wire rope 5273 passes through the side panel of the car 52 and connects upward to the brake lever. The tension of the wire rope can be adjusted to accommodate the flexible installation position of the lifting drive unit 413, resulting in better adaptability. Furthermore, the cage 5 and the split drive system 4 are installed as a whole on the guide rail frame 2 and rise and fall together along the guide rail frame 2. The distance between the brake lever of the lifting drive unit 413 and the operating end of the release device 527 inside the cage is also relatively stable and controllable.

[0040] The cage-in-cage release device 527 may include: The winch mounting bracket 5274 is used to install the winch 5272. The winch mounting bracket 5274 is fastened to the side panel of the car 52.

[0041] See Figure 13 To securely mount the winch on the stainless steel sheet, a winch mounting base 5274 is added. The winch mounting base 5274 can be fixedly mounted on the vertical support frame 53 through the stainless steel sheet, for example... Figure 5 The vertical support frame 53 shown can be provided with several threaded hole columns in the middle of the vertical support to fasten the winch mounting base 5274 to the threaded hole columns by several bolts.

[0042] Specifically, in Figure 13 In this design, the winch mounting base 5274 may include a support plate 52741 and a U-shaped lug 52742 disposed on the support plate, with the winch 5272 pivotally mounted in the U-shaped lug 52742. Thus, the winch 5272 can pivot stably within the U-shaped lug 52742, thereby tightening or releasing the wire rope. For further secure installation, the support plate 52741 can be connected to the vertical support frame 53 via fasteners passing through the side panel; specifically, the four screws shown in the figure can pass through the four threaded holes on the vertical support frame.

[0043] For ease of operation, the cage release device 527 may also include an operating handle 5271. The operating handle 5271, serving as the control end, is fixedly connected to the winch 5272 and used to drive the winch 5272 to rotate. Specifically, the operating handle 5271 can be directly welded to the winch. Alternatively, the operating handle 5271 can also be fixed to the winch via other connection methods such as a pin. See, for example... Figure 13 The operating handle 5271 and the winch 5272 can be pivotally mounted on the U-shaped lug 52742 via the same pin; then, through threaded holes are opened on the connecting ends of the winch 5272 and the operating handle 5271, and the winch 5272 and the operating handle 5271 are fixed by bolts.

[0044] In specific operation, if the split drive system 4 drives the cage 5 to run in mid-air and suddenly malfunctions and cannot operate normally, the staff inside the car 52 can follow the instructions as follows: Figure 13 As shown, pulling the operating handle 5271 clockwise causes the winch 5272 of the wire rope to rotate clockwise around its center, pulling the wire rope 5273 taut and winding it around the winch 5272. This, in turn, causes the brake lever at the tail of the motor of the lifting drive unit 413 to rotate downwards, disengaging the motor brake and lowering the cage 5 to a safe position. Specifically, pulling the operating handle 5271 of the release brake device 527 inside the cage brakes the motor, allowing the cage to slowly descend under gravity without braking force until it stops at a position where personnel can pass.

[0045] Similarly, the car 52, equipped with the in-cage brake release device 527, adopts a lightweight design. The car 52 is a cubic box shape, and all side panels are made of stainless steel. To ensure a stable installation, the vertical support frame 53 provides structural support to compensate for the structural strength of the stainless steel car 52. The vertical support frame includes mutually perpendicular vertical supports and horizontal supports. The car 52 is mounted against the vertical supports, and the bottom of the car is detachably and securely mounted on the horizontal supports.

[0046] In addition, the hoist cage 5 includes a cage top guardrail 51, which is set around the perimeter of the top panel of the car 52. The cage top guardrail 51 can be connected to the top of the vertical support, so that the hoist cage 5 can be modularly assembled with the vertical support frame 53 as the keel, so as to minimize its size and weight.

[0047] In case of an emergency, the people inside the car 52 can operate the cage release device 527 to lower the cage 5 safely, and can also escape through the skylight 521, which enhances the safety and reliability of the elevator.

[0048] This application also discloses a folding door. For example... Figure 14 , Figure 15 As shown, a folding door 528 in one specific embodiment may include: The door body includes a foldable pivot door body 5281 and a movable door body 5282; A tubular door lock assembly is disposed on the vertical outer side of the movable door body 5282 and includes a nested outer sleeve 5289 and an inner sleeve 52810. The outer sleeve 5289 has a through lock hole, and the inner sleeve 52810 has a lock hook 528102. The inner sleeve 52810 can move vertically within the outer sleeve 5289 and align the lock hook 528102 laterally with the through lock hole, so that the door hook 524 extending through the through lock hole can lock with the lock hook 528102.

[0049] This application aims to design an inward-pushing folding door to avoid requiring more space when opened outwards. Furthermore, the folding door's locking mechanism must be secure and stable, preventing accidental opening. Electric control doors, on the other hand, are prone to accidental opening due to power outages or control malfunctions, which can easily lead to safety accidents. Therefore, this application specifically employs a mechanical locking structure and designs a tubular door lock assembly that can be locked by the weight of the inner sleeve 52810.

[0050] like Figure 15 , Figure 16 As shown, the outer sleeve 5289 has a transversely penetrating and vertically extending elongated hole 52891 in its middle, and the inner sleeve 52810 has a transversely penetrating pin hole in its middle. The tubular door lock assembly also includes a pin handle 528104, which is detachably connected to the pin hole and the elongated hole 52891. Therefore, when the pin handle 528104 passes through the pin hole and the elongated hole 52891, the vertical movement range between the inner and outer sleeves is limited to the vertical length of the elongated hole 52891.

[0051] At this point, as the inner sleeve 52810 moves downwards due to its own weight, causing the pin handle 528104 to be supported at the bottom end of the elongated hole of the outer sleeve 5289, the locking hook 528102 can lock. Figure 7 , Figure 8The door hook 524 shown is used to form a lock. That is, in the closed state, when the door body 5282 is moved to the door hook 524 until the door hook 524 extends into the through lock hole, the weight of the inner sleeve 52810 can cause the lock hook 528102 to lock the door hook 524, forming a lock. Of course, in Figure 15 In the open position shown, the lock hook 528102 and the door hook 524 are disengaged. At this time, the weight of the inner sleeve 52810 causes the pin handle 528104 to be supported at the bottom end of the elongated hole in the outer sleeve 5289, resulting in a slight vertical misalignment between the lock hook 528102 and the through-hole on the outer sleeve 5289. If the door hook 524 passes through the aligned through-hole on the outer sleeve 5289, then... Figure 8 The door hook 524 shown will make lateral contact Figure 15 , Figure 17 The locking hook 528102 shown is used to eventually form a lock.

[0052] To help Figure 8 The top hook of the door hook 524 shown extends into Figure 17 In the downward-facing locking hook 528102 shown, based on the design of the locking hook 528102 as a U-shaped locking hook opening towards the middle of the pipe section, the outer contact surface of the U-shaped locking hook and the outer contact surface of the door hook 524 form a guide contact slope. That is, the top hook of the door hook 524 laterally contacts the outer contact surface of the U-shaped locking hook, and then moves along the guide contact slope, simultaneously lifting the inner sleeve 52810 together with the locking hook 528102 upwards. Figure 16 The inner sleeve 528104 is no longer supported at the bottom of the elongated hole of the outer sleeve 5289, but moves to the middle of the elongated hole. Finally, after the top hook of the door hook 524 is fully inserted into the U-shaped lock groove of the U-shaped lock hook, the weight of the inner sleeve 52810 moves downward and causes the inner sleeve 528104 to be supported again at the bottom of the elongated hole of the outer sleeve 5289, thus completing the locking.

[0053] The illustrated lock hook 528102 has a U-shaped locking groove with an opening facing downwards, but it is not limited to this; the shape of the locking groove can be other shapes such as square holes, oblong holes, oval holes, etc. Similarly, the door hook 524 is not limited to... Figure 8 The U-shaped lock hook shown, the door hook 524 should match the shape and structure of the lock hook 528102, so as to achieve unlocking and locking.

[0054] To facilitate smoother vertical movement between the inner and outer sleeves, the inner sleeve 52810 includes, for example... Figure 17 The inner tube segment 528101 shown has several rolling spheres 528103 distributed around its periphery, such as... Figure 18As shown, when the inner tube segment 528101 is embedded within the outer tube 5289, each rolling ball 528103 abuts against the inner wall of the outer tube 5289. By providing multiple rolling balls 528103, the sliding contact area between the inner and outer tubes can be reduced, thereby making the sliding smoother. Specifically, in this embodiment, both the inner tube segment 528101 and the outer tube 5289 are square tubes with rectangular cross-sections, and the rolling balls 528103 are omnidirectional balls. At least one omnidirectional ball is provided on each of the four side walls of the square tube.

[0055] It should be noted that the purpose of setting several rolling balls 528103 is to reduce sliding friction and make the vertical movement between the inner and outer sleeves smoother. Not setting the rolling balls 528103 is also a feasible solution falling within the scope of protection of this application. The rolling balls 528103 are not limited to omnidirectional balls; for example, they could be pulleys, etc.

[0056] See Figure 14 , Figure 15 The pivot door 5281 includes a pivot edge and a first hinge edge located on both sides of the door's lateral direction. The movable door 5282 includes a sliding edge and a second hinge edge located on both sides of the door's lateral direction. The first hinge edge is hinged to the second hinge edge via a hinge 5285. A tubular door lock assembly is installed on the sliding edge of the door, and guide wheels 5288 are provided at both ends of the sliding edge. (See also...) Figure 14 , Figure 15 .like Figure 7 As shown, a guide groove 526 arranged in a horizontal straight line can be provided at the bottom edge of the folding door mounting location on one side of the car 52. The guide wheel 5288 can move laterally along the guide groove 526, thereby driving the tubular door lock assembly away from or close to the door hook 524 to form a lock.

[0057] To maintain visibility for personnel inside the cage, viewing windows 5283 are provided on both the pivot door 5281 and the sliding door 5282. Door handles 5284 are provided on both the inner and outer sides of the pivot door 5281 and the sliding door 5282 to ensure the normal opening and closing of the folding door 528.

[0058] Based on the aforementioned folding door 528, this application also discloses a hoist cage for use in a personnel-carrying construction elevator. For example... Figure 4 As shown, the cage 5 includes: The vertical support frame 53 includes mutually perpendicular vertical supports and horizontal supports; The car 52 is cubic in shape. The car 52 is set against the vertical support and the bottom of the car is detachably and securely installed on the horizontal support. The aforementioned folding door 528 is located on one side of the car 52.

[0059] With the above-mentioned folding door 528, the door opens inward and does not encroach on the space outside the car 52, making it more suitable for use in small spaces of construction hoists.

[0060] like Figure 14 As shown, the folding door 528 has a folding door limit stop 5287 on its vertical outer side where the tubular door lock assembly is installed. Figure 7 As shown, the hoist cage can be equipped with a corresponding door limit switch 523. As an example, the door limit switch 523 illustrated can be installed on the top edge of the folding door mounting location of the car 52, adjacent to the door hook 524. Those skilled in the art will understand that the limit switch and its working principle are common knowledge and will not be elaborated upon here. Furthermore, the installation position of the door limit switch 523 only needs to correspond to the door limit contact 5287, and is not limited to the installation position shown in the illustration.

[0061] In the unfolded and locked state of the folding door, the locking hook 528102 locks the door hook 524, and the folding door limit stop 5287 presses down the swing arm of the door limit switch 523. In the folded and open state of the folding door, the locking hook 528102 disengages from the door hook 524, and the folding door limit stop 5287 releases the swing arm of the door limit switch 523, triggering the door limit switch 523 and generating a stop signal. This forms a mechanical limit safety structure. In the unfolded and locked state of the folding door, the car 52 can move up and down normally; in the folded and open state of the folding door, the split drive system 4 stops operating, and the car 52 stops moving up and down.

[0062] like Figure 7 As shown, the folding door mounting side of the car 52 forms a four-sided door frame surrounding the folding door. The horizontal edges of the four-sided door frame are provided with guide grooves 526. The pivot door body 5281 is pivotally mounted on the first vertical edge of the four-sided door frame. The second vertical edge of the four-sided door frame is provided with a door hook 524 that engages with a lock hook 528102. See also... Figure 9 , Figure 10 A limit buffer pad 529 is provided at one end of the guide groove 526 near the first vertical frame to prevent the guide wheel 5288 from sliding further and causing a collision.

[0063] Specifically, such as Figure 17 , Figure 18 As shown, both ends of the inner pipe section 528101 are equipped with locking hooks 528102, and all four sides are equipped with omnidirectional balls. Figure 18As shown in the top view, after removing the pin handles 528104 on both sides of the inner sleeve 52810 and inserting it into the outer sleeve 5289, the universal balls on the four sides of the inner sleeve press against the inner wall of the outer sleeve. At this time, the inner sleeve 52810 can move up and down within the outer sleeve 5289. After moving the inner sleeve 52810 to the middle position shown in the outer sleeve 5289, the pin handles 528104 can be inserted into the oblong holes (i.e., elongated holes) on both sides of the outer sleeve 5289 to reinstall it onto the inner sleeve 52810. At this time, the pin handles 528104 on both sides can restrict the displacement of the inner sleeve 52810 within the outer sleeve 5289, preventing the inner sleeve 52810 from moving downwards to the bottom of the outer sleeve 5289.

[0064] In the normal open and closed state, the inner sleeve 52810, restrained by the pin handle 528104, is pressed against the bottom of the oblong hole of the outer sleeve 5289 under gravity. At this time, the locking hooks 528102 located at both ends of the outer sleeve 5289 are misaligned with the square holes (i.e., through lock holes) on the side of the outer sleeve 5289. When the folding door 528 is closed, the door hook 524 located on the opposite doorpost extends through the square hole and hooks the locking hook 528102, locking the folding door 528. At this time, the folding door limit stop 5287 presses against the swing arm on the door limit switch 523, and the construction hoist can operate normally.

[0065] When the folding door 528 needs to be opened, the pin handle 528104 can be pulled upwards. At this time, the door lock moves upwards, the lock hook 5282 disengages from the door hook 524, and the door handle 5284 set on the pivot door body 5281 is pushed. The left pivot door body 5281 can then rotate around the rotation axis 5286 into the cage. At the same time, the moving door body rotates around the hinge 5285. Simultaneously, the guide wheel 5288 moves from left to right in the guide groove 526, opening the folding door 528 until the guide wheel 5288 contacts the buffer rubber pad 529. At this time, the folding door 528 is fully opened. During the opening process, the folding door limit stop 5287 moves to the right with the moving door body. At this time, the swing arm of the door limit switch 523 is no longer pressed, and the swing arm automatically rotates counterclockwise around its central axis. The door limit switch 523 is triggered and sends a signal to the electrical control system, preventing the construction hoist from operating normally.

[0066] When the folding door 528 needs to be closed, pull the door handle 5284 on the movable door body 5282 to move it to the left along the guide groove 526. Since the ends of the door hook 524 and the lock hook 528102 are both provided with a certain slope, when the door hook 524 extends into the outer sleeve 5289 and contacts the lock hook 528102, the door hook 524 pushes the inner sleeve 52810 upward until the lock hook 528102 completely hooks the door hook 524. Then, the inner sleeve 52810 moves downward under its own weight. At this time, the folding door 528 is in the locked state. The folding door limit stop 5287 presses the swing arm on the door limit switch 523. At this time, the construction hoist can operate normally.

[0067] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0068] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0069] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0070] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A folding door, characterized in that, The folding door (528) includes: The door body includes a foldable pivot door body (5281) and a movable door body (5282). A tubular door lock assembly is disposed on the vertical outer side of the movable door body (5282) and includes a nested outer sleeve (5289) and an inner sleeve (52810). The outer sleeve (5289) is provided with a through lock hole, and the inner sleeve (52810) is provided with a lock hook (528102). The inner sleeve (52810) can move vertically within the outer sleeve (5289) and align the lock hook (528102) laterally with the through lock hole, so that the door hook (524) extending through the through lock hole can lock with the lock hook (528102).

2. The folding door according to claim 1, characterized in that, The outer sleeve (5289) has a transverse through-hole (52891) in the middle and extends vertically. The inner sleeve (52810) has a transverse through-hole in the middle. The tubular door lock assembly also includes a pin handle (528104). The pin handle (528104) is detachably connected to the pin hole and the elongated hole (52891).

3. The folding door according to claim 2, characterized in that, When the inner sleeve (52810) drives the pin handle (528104) to move down and support it at the bottom end of the elongated hole of the outer sleeve (5289), the locking hook (528102) can lock the door hook (524) to form a lock.

4. The folding door according to claim 1, characterized in that, The inner sleeve (52810) includes an inner tube section (528101), and a plurality of rolling balls (528103) are distributed around the inner tube section (528101). When the inner tube section (528101) is embedded in the outer sleeve (5289), each of the rolling balls (528103) abuts against the inner wall of the outer sleeve (5289).

5. The folding door according to claim 4, characterized in that, The inner tube section (528101) and the outer tube (5289) are both square tubes with rectangular cross sections, and the rolling ball (528103) is a universal ball.

6. The folding door according to claim 1, characterized in that, The locking hook (528102) is a U-shaped locking hook that opens toward the middle of the pipe section. The outer contact surface of the U-shaped locking hook and the outer contact surface of the door hook (524) are both formed with guide contact slopes.

7. The folding door according to any one of claims 1 to 6, characterized in that, The pivot door (5281) includes a pivot edge and a first hinge edge located on both sides of the door body in the lateral direction. The movable door (5282) includes a translation edge and a second hinge edge located on both sides of the door body in the lateral direction. The first hinge edge is hinged to the second hinge edge by a hinge (5285). The tubular door lock assembly is installed on the sliding side of the door body, and guide wheels (5288) are provided at both ends of the sliding side of the door body.

8. A hoist cage used in construction hoists, characterized in that, The cage (5) includes: Car (52); The folding door according to any one of claims 1 to 7 is disposed on one side of the car (52).

9. The cage according to claim 8, characterized in that, The vertical outer side of the folding door, on which the tubular door lock assembly is installed, is provided with a folding door limit stop (5287), and the cage is provided with a door limit switch (523). In the unfolded and locked state of the folding door, the locking hook (528102) locks the door hook (524), and the folding door limit stop (5287) presses against the swing arm of the door limit switch (523); in the folded and opened state of the folding door, the locking hook (528102) disengages from the door hook (524), and the folding door limit stop (5287) releases the swing arm of the door limit switch (523), so that the door limit switch (523) is triggered and generates a stop signal.

10. The cage according to claim 8 or 9, characterized in that, The folding door mounting side of the car (52) forms a four-sided door frame surrounding the folding door. The horizontal frame of the four-sided door frame is provided with a guide groove (526). The pivot door body (5281) is pivotally mounted on the first vertical frame of the four-sided door frame. The second vertical frame of the four-sided door frame is provided with a door hook (524) that is inserted and cooperates with the lock hook (528102).

11. The cage according to claim 10, characterized in that, A limiting buffer pad (529) is provided at one end of the guide groove (526) near the first vertical frame.

12. A construction hoist, characterized in that, The construction hoist includes a cage as described in any one of claims 8 to 11.

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