Elevator pit ladder

Abstract

The invention relates to an elevator pit ladder which comprises a containing cabinet arranged on a wall outside an elevator hoistway, and a fixing support is arranged in the containing cabinet. The ladder main body is detachably arranged on the fixed bracket; the at least one first switch is arranged in the accommodating cabinet, and when the ladder main body is placed on the fixed bracket, the first switch is switched on, so that the elevator normally runs; and when the ladder main body is separated from the fixed bracket, the first switch is switched off, so that the elevator stops running. The elevator pit ladder does not occupy the space of a pit, is simple in structure and safe to use, and is more adaptive to a complex elevator system.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator equipment, and in particular to an elevator pit ladder. Background Art

[0002] With the rapid advancement of urbanization, high-rise buildings have gradually become the symbol of the city, and the demand for elevators is also growing rapidly. Usually, the elevator pit is equipped with equipment such as the elevator's counterweight guardrail, elevator buffer base, and drainage device. In order to facilitate the daily inspection and maintenance of these equipment, a ladder is required for the staff to enter and exit the pit.

[0003] Traditional elevator pit ladders are usually installed to the side walls of the pit by expansion bolts, or installed to the steel beams of the pit shaft by welding. This will occupy a large pit space, thus affecting the layout of other equipment in the pit. Especially for complex elevator systems (such as twin elevator systems and high-speed elevator systems), more equipment is usually required in the elevator pit, but due to the limited pit space, the traditional elevator pit ladder has poor adaptability in complex elevator systems.

[0004] The information disclosed in this background section is only intended to enhance understanding of the overall background of the invention and should not be taken as an acknowledgement or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0005] In view of the defects existing in the prior art, the purpose of the present invention is to provide an elevator pit ladder arranged outside the elevator shaft, which does not occupy the pit space, has a simple structure, is safe to use, and is more adaptable to complex elevator systems.

[0006] The present invention provides an elevator pit ladder, comprising: a storage cabinet, which is arranged on a wall outside an elevator shaft, and a fixed bracket is arranged in the storage cabinet; a ladder body, which is detachably arranged on the fixed bracket; and at least one first switch, which is arranged in the storage cabinet, and when the ladder body is placed on the fixed bracket, the first switch is turned on, so that the elevator runs normally; when the ladder body is separated from the fixed bracket, the first switch is turned off, so that the elevator stops running.

[0007] According to an exemplary embodiment of the present invention, the ladder body is provided with a plurality of crosspieces parallel to each other; and the fixing bracket is provided as a platform structure corresponding to the crosspieces.

[0008] According to an exemplary embodiment of the present invention, the first switch is arranged on the side of the fixed bracket and has a first contact base and a first spring contact; wherein, when the crossbar is placed on the fixed bracket, the first spring contact contacts with the contact of the first contact base, so that the first switch is turned on, and the elevator operates normally; when the crossbar is separated from the fixed bracket, the first spring contact is separated from the contact of the first contact base, so that the first switch is turned off, and the elevator stops running.

[0009] According to an exemplary embodiment of the present invention, the storage cabinet includes: a cabinet body provided as a storage space having an opening; and a cabinet door rotatably connected to the cabinet body and used to close the opening of the storage space.

[0010] According to an exemplary embodiment of the present invention, a hinge component is provided at one side of the cabinet body corresponding to the cabinet door, so that one side of the cabinet door is hinged to the one side of the cabinet body.

[0011] According to an exemplary embodiment of the present invention, the storage cabinet further includes: a door lock, which is arranged on the other side of the cabinet door and has a keyhole exposed to the outside through the cabinet door; and at least one second switch, which is arranged on the other side of the cabinet body corresponding to the door lock and has a second contact base and a second spring contact; wherein, when the cabinet door is closed and the door lock is locked, the second spring contact contacts with the contact of the second contact base, so that the second switch is turned on, so that the elevator operates normally; when the door lock is unlocked, the second spring contact is out of contact with the contact of the second contact base, so that the second switch is disconnected, so that the elevator stops running.

[0012] According to an exemplary embodiment of the present invention, the fixing bracket is disposed in the middle of the cabinet, and an outer edge of the fixing bracket is provided with a stopper protruding upward to prevent the crossbar from sliding off the fixing bracket.

[0013] According to an exemplary embodiment of the present invention, the ladder body includes: a first section of the ladder, one end of which is provided with a connecting rod, and both ends of the connecting rod are provided with a locking portion; and a second section of the ladder, one end of which is hinged to the other end of the first section of the ladder so that the other end of the second section of the ladder can be folded toward the direction of the first section of the ladder.

[0014] According to an exemplary embodiment of the present invention, the cabinet has four side panels, and the four side panels are perpendicular to the wall and together with the wall surround the accommodating space.

[0015] According to an exemplary embodiment of the present invention, the cabinet is configured as the accommodating space formed by an inward depression of a wall.

[0016] The elevator pit ladder of the present invention arranges the ladder body and the storage cabinet for accommodating the ladder body on the wall outside the elevator shaft, and controls the operation of the elevator through a first switch. It not only has the characteristics of simple structure and safe use, but also does not occupy the pit space, which is beneficial to the layout of other equipment in the pit and is more adaptable to complex elevator systems.

[0017] The device of the present invention has other characteristics and advantages, which will be obvious from the drawings and subsequent embodiments incorporated herein, or will be described in detail in the drawings and subsequent embodiments incorporated herein, which together are used to explain the specific principles of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of an elevator pit ladder according to an implementation scheme of the present invention being arranged on a wall outside the hoistway.

[0019] Figure 2 It is a schematic diagram of the overall structure of an elevator pit ladder according to an implementation scheme of the present invention.

[0020] Figure 3 It is a schematic structural diagram of a ladder body of an elevator pit ladder according to an implementation scheme of the present invention.

[0021] Figure 4 It is a schematic structural diagram of a storage cabinet for an elevator pit ladder according to an implementation scheme of the present invention.

[0022] Figure 5 It is a schematic diagram that the first switch of the elevator pit ladder according to the implementation scheme of the present invention is set on the fixed bracket.

[0023] Figure 6 It is a schematic diagram of the cooperation between the fixed bracket and the first switch of the elevator pit ladder and the crossbar of the ladder body according to the implementation scheme of the present invention.

[0024] Figure 7 This is a schematic diagram of an elevator pit ladder embodiment of the present invention in which a second switch is arranged in a cabinet.

[0025] Figure 8 It is a schematic diagram of a door lock of an elevator pit ladder according to an implementation scheme of the present invention being arranged on a cabinet door.

[0026] Description of reference numerals:

[0027] 100: Storage cabinet

[0028] 110: Cabinet 111: Side panel

[0029] 120: Cabinet door

[0030] 130: hinge part 140: door lock

[0031] 141: Keyhole 150: Second switch

[0032] 151: Second contact base 152: Second spring contact

[0033] 200: Fixed bracket

[0034] 210: Stopper

[0035] 300: Ladder body

[0036] 310: Rung 320: First rung of the ladder

[0037] 321: Connecting rod 322: Locking part

[0038] 330: The second ladder

[0039] 400: First switch

[0040] 410: first contact base 420: first spring contact.

[0041] It should be understood that the accompanying drawings are not necessarily drawn to scale, but rather present simplified representations of various features to illustrate the basic principles of the present invention. The specific design features disclosed in the present invention (including, for example, specific dimensions, directions, locations, and shapes) will be determined in part by the specific intended application and use environment.

[0042] In the figures, like reference numbers refer to the same or equivalent parts of the present invention throughout the several figures of the drawing. DETAILED DESCRIPTION

[0043] The following will be referred to in detail various embodiments of the present invention, examples of which are presented in the accompanying drawings and described below. Although the present invention will be described in conjunction with exemplary embodiments, it should be understood that this specification is not intended to limit the present invention to these exemplary embodiments. On the contrary, the present invention is intended to cover not only these exemplary embodiments, but also various alternative forms, modifications, equivalent forms and other embodiments that can be included in the spirit of the present invention and within the scope defined by the appended claims.

[0044] Combine the following Figures 1 to 8 The structure of the elevator pit ladder according to the embodiment of the present invention is described.

[0045] Figure 1 This is a schematic diagram of an elevator pit ladder according to an implementation scheme of the present invention being arranged on a wall outside the hoistway. Figure 2 It is a schematic diagram of the overall structure of an elevator pit ladder according to an implementation scheme of the present invention.

[0046] like Figure 1 and Figure 2 As shown, the elevator pit ladder according to the embodiment of the present invention includes: a containing cabinet 100 , a ladder body 300 , and at least one first switch 400 .

[0047] The storage cabinet 100 is arranged on the wall outside the elevator shaft and is used to accommodate the ladder body 300. Preferably, the storage cabinet 100 can be arranged on the wall near the outside of the elevator bottom floor door, so that the staff can take the ladder body 300 in the storage cabinet 100 when entering the pit from the bottom floor door.

[0048] Furthermore, a fixing bracket 200 may be provided in the storage cabinet 100 to support the ladder body 300. Specifically, the fixing bracket 200 may be installed on the wall where the storage cabinet 100 is located by expansion bolts and located in the middle of the storage cabinet 100.

[0049] Furthermore, the storage cabinet 100 may include a cabinet body 110 and a cabinet door 120. The cabinet body 110 is provided as a storage space having an opening. Figure 4 As shown, the cabinet 110 has four side panels 111, which are perpendicular to the wall and can be installed on the wall by expansion bolts. The four side panels 111 are connected in sequence and together with the wall form a receiving space. Alternatively, according to actual conditions, the cabinet 110 can also be set as a receiving space formed by the inward depression of the wall, thereby saving more materials and space.

[0050] The cabinet door 120 is rotatably connected to the cabinet body 110 and is used to close the opening of the receiving space 11. Figure 4 As shown, a hinge component 130 is provided on one side of the cabinet body 110 corresponding to the cabinet door 120, so that one side of the cabinet door 120 is hinged to the one side of the cabinet body 110, so that the cabinet door 120 can be opened and closed by rotating.

[0051] The ladder body 300 is detachably mounted on the fixing bracket 200. Figure 3 and Figure 4As shown, the ladder body 300 is provided with a plurality of crosspieces 310 parallel to each other, and the fixed bracket 200 is provided as a platform structure corresponding to the crosspieces 310, so that the crosspieces 310 of the ladder body 300 can be placed on the fixed bracket 200. Further, the ladder body 300 includes a first section ladder 320 and a second section ladder 330. A connecting rod 321 is provided at one end of the first section ladder 320, and a locking portion 322 is provided at both ends of the connecting rod 321. One end of the second section ladder 330 is hinged to the other end of the first section ladder 320, so that the other end of the second section ladder 330 can be folded in the direction of the first section ladder 320. In this way, when the ladder body 300 is not needed, the first section ladder 320 and the second section ladder 330 can be folded and placed on the fixed bracket 200 to reduce the length of the space occupied by the ladder body 300, thereby reducing the length of the storage cabinet 100 for accommodating the ladder body 300. When the ladder body 300 is needed, the ladder body 300 can be removed from the fixing bracket 200, and the other end of the second ladder section 330 can be unfolded in a direction away from the first ladder section 320, thereby extending the length of the ladder body 300 to be suitable for a deeper elevator pit. The locking portion 322 can be locked on the edge of the pit, so that the ladder body 300 is more stable during use.

[0052] Furthermore, with Figure 5 and Figure 6 As shown, the outer edge of the fixing bracket 200 is provided with a stopper 210 protruding upward to prevent the crosspiece 310 of the ladder body 300 from sliding off the fixing bracket 200 .

[0053] At least one first switch 400 is provided in the storage cabinet 100, and when the ladder body 300 is placed on the fixing bracket 200, the first switch 400 is turned on, so that the elevator operates normally. When the ladder body 300 is separated from the fixing bracket 200, the first switch 400 is turned off, so that the elevator stops operating. Figure 5 and Figure 6 As shown, the first switch 400 is arranged on the side of the fixed bracket 200 and has a first contact base 410 and a first spring contact 420. When the crossbar 310 is placed on the fixed bracket 200, the crossbar 310 can press the first spring contact 420, so that the first spring contact 420 contacts the contact of the first contact base 410, so that the first switch 400 is turned on, and the elevator operates normally. When the crossbar 310 is separated from the fixed bracket 200, the first spring contact 420 loses the pressure of the crossbar 310, so that the first spring contact 420 is separated from the contact of the first contact base 410, so that the first switch 400 is disconnected, and the elevator stops running. In this way, when the staff takes the ladder body 300 from the fixed bracket 200, the elevator is in a stopped state, ensuring the safety of the staff's operation.

[0054] Further, in an exemplary embodiment of the present invention, the number of the first switches 400 is two and they are located on the same side of the fixed bracket 200. The two first switches 400 may correspond to the two cars of the twin elevators respectively and be connected to the two control loops of the twin elevators, so that when the crossbar 310 of the ladder body 300 is placed on the fixed bracket 200, the two first switches 400 are turned on at the same time, and the two cars of the twin elevators run normally at the same time, and when the crossbar 310 of the ladder body 300 is separated from the fixed bracket 200, the two first switches 400 are turned off at the same time, and the two cars of the twin elevators stop running at the same time. Alternatively, the two first switches 400 may also be located on both sides of the fixed bracket 200, respectively.

[0055] According to an exemplary embodiment of the present invention, Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown, the storage cabinet 100 further includes a door lock 140 and at least one second switch 150. The door lock 140 is arranged at a middle position of the other side of the cabinet door 120, and the door lock 140 has a key hole 141 exposed to the outside through the cabinet door 120. The staff can open and close the door lock 140 by cooperating with the key and the key hole 141, thereby opening and closing the cabinet door 120 of the storage cabinet 100.

[0056] At least one second switch 150 is provided on the cabinet 110. Specifically, the second switch 150 is provided in the middle of the other side of the cabinet 110 corresponding to the door lock 140. The second switch 150 has a second contact base 151 and a second spring contact 152, and when the cabinet door 120 is closed and the door lock 140 is locked, the door lock 140 can press against the second spring contact 152, so that the second spring contact 152 contacts with the contact of the second contact base 151, so that the second switch 150 is turned on, so that the elevator operates normally. When the door lock 140 is unlocked, the second spring contact 152 loses the pressing force of the door lock 140, so that the second spring contact 152 is out of contact with the contact of the second contact base 151, so that the second switch 150 is disconnected, so that the elevator stops running. In this way, the staff can stop the elevator when opening the storage cabinet 100, further ensuring the safety of the staff's operation.

[0057] Further, in an exemplary embodiment of the present invention, the number of the second switches 150 is two. The two second switches 150 may correspond to the two cars of the twin elevators respectively and be connected in the two control loops of the twin elevators, so that when the cabinet door 120 is closed and the door lock 140 is locked, the two second switches 150 are turned on at the same time, and the two cars of the twin elevators run normally at the same time, and when the door lock 140 is unlocked, the two second switches 150 are turned off at the same time, and the two cars of the twin elevators stop running at the same time.

[0058] The operation of the elevator pit ladder according to the implementation scheme of the present invention will be described below in conjunction with the accompanying drawings.

[0059] Generally, the ladder body 300 of the elevator pit ladder is placed on the fixed bracket 200 in the storage cabinet 100 (such as Figure 2 As shown), the cabinet door 120 of the storage cabinet 100 is closed, and the door lock 140 is locked (as shown Figure 1 As shown), the first switch 400 and the second switch 150 are turned on, and the elevator operates normally.

[0060] When the staff needs to enter the pit for operation, first, the staff opens the door lock 140 by the cooperation of the key and the key hole 141 outside the elevator shaft, thereby opening the cabinet door 120 of the storage cabinet 100. At this time, the second switch 150 is disconnected, and the elevator stops running.

[0061] Then, the worker removes the ladder body 300 from the fixed bracket 200, and unfolds the other end of the second ladder section 330 in a direction away from the first ladder section 320. At this time, the first switch 400 is disconnected, and the elevator continues to remain in a stopped state. In this way, the second switch 150 is prevented from being mistakenly turned on when the worker is working in the pit, thereby ensuring the safety of the worker's work.

[0062] Finally, the staff puts the unfolded ladder body 300 into a suitable position in the pit, and clamps the clamping portion 322 against the edge of the pit, so that the ladder body 300 is more stable during use. At this time, the staff can enter the pit through the ladder body 300 for operation.

[0063] When the worker finishes the work in the pit and comes out of the pit along the ladder body 300, first, the worker can take the ladder body 300 out of the pit and fold the other end of the second ladder section 330 toward the direction close to the first ladder section 320. Then, the worker places the folded ladder body 300 on the fixed bracket 200 in the storage cabinet 100. At this time, the first spring contact 420 of the first switch 400 contacts the contact of the first contact base 410, so that the first switch 400 is turned on.

[0064] Finally, the staff closes the cabinet door 120 of the storage cabinet 100, and locks the door lock 140 by the cooperation of the key and the keyhole 141. At this time, the second spring contact 152 of the second switch 150 contacts the contact of the second contact base 151, so that the second switch 150 is turned on. At this time, both the first switch 400 and the second switch 150 are turned on, and the elevator can operate normally.

[0065] For convenience of interpretation and precise definition of the appended claims, the terms "upper", "lower", "inner", "outer", "above", "below", "upper end", "lower end", "outside", "inner", "outer", "inner", "external", "upwardly", and "downwardly" are used to describe the features of the exemplary embodiments with reference to the positions of these features shown in the accompanying drawings.

[0066] The foregoing description of the specific exemplary embodiments of the present invention is presented for the purpose of illustration and description. The foregoing description is not intended to be exhaustive, nor is it intended to limit the present invention to the precise form disclosed, and it is apparent that many changes and variations are possible in accordance with the above teachings. The exemplary embodiments are selected and described to explain the specific principles of the present invention and its practical application, so that other technical personnel in the art can realize and utilize the various exemplary embodiments of the present invention and its different selected forms and modified forms. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An elevator pit ladder, characterized in that: include: A storage cabinet is arranged on a wall outside the elevator shaft, and a fixing bracket is arranged in the storage cabinet; A ladder body, which is detachably mounted on the fixing bracket; as well as At least one first switch is arranged in the storage cabinet, and when the ladder body is placed on the fixed bracket, the first switch is turned on, so that the elevator runs normally; when the ladder body is separated from the fixed bracket, the first switch is turned off, so that the elevator stops running.

2. The elevator pit ladder according to claim 1, characterized in that: The ladder body is provided with a plurality of rungs parallel to each other; The fixing bracket is arranged as a platform structure corresponding to the cross piece.

3. The elevator pit ladder according to claim 2, characterized in that: The first switch is arranged on the side of the fixing bracket and has a first contact base and a first spring contact; When the crossbar is placed on the fixed bracket, the first spring contact contacts the contact of the first contact base, so that the first switch is turned on, and the elevator operates normally; when the crossbar is separated from the fixed bracket, the first spring contact is separated from the contact of the first contact base, so that the first switch is turned off, and the elevator stops running.

4. The elevator pit ladder according to claim 3, characterized in that: The storage cabinet comprises: A cabinet body, which is configured to have an opening for receiving space; and The cabinet door is rotatably connected to the cabinet body and is used to close the opening of the accommodating space.

5. The elevator pit ladder according to claim 4, characterized in that: A hinge component is provided on one side of the cabinet body corresponding to the cabinet door, so that one side of the cabinet door is hinged to one side of the cabinet body.

6. The elevator pit ladder according to claim 5, characterized in that: The storage cabinet further comprises: a door lock disposed on the other side of the cabinet door and having a key hole passing through the cabinet door and exposed to the outside; and at least one second switch, which is arranged on the other side of the cabinet corresponding to the door lock and has a second contact base and a second spring contact; Among them, when the cabinet door is closed and the door lock is locked, the second spring contact contacts the contact of the second contact base, so that the second switch is turned on, and the elevator operates normally; when the door lock is unlocked, the second spring contact disengages from the contact of the second contact base, so that the second switch is turned off, and the elevator stops running.

7. The elevator pit ladder according to claim 6, characterized in that: The fixing bracket is arranged in the middle of the cabinet, and an outer edge of the fixing bracket is provided with a stopper protruding upward to prevent the crossbar from sliding off the fixing bracket.

8. The elevator pit ladder according to claim 7, characterized in that: The ladder body comprises: A first ladder section, one end of which is provided with a connecting rod, and both ends of the connecting rod are provided with a locking portion; and One end of the second ladder section is hinged to the other end of the first ladder section so that the other end of the second ladder section can be folded toward the first ladder section.

9. The elevator pit ladder according to claim 4, characterized in that: The cabinet has four side panels, which are perpendicular to the wall and surround the accommodating space together with the wall.

10. The elevator pit ladder according to claim 4, characterized in that: The cabinet body is configured as the accommodation space formed by the inward depression of the wall.

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