Elevator pit safety device

Abstract

The utility model provides an elevator pit safety device, and belongs to the technical field of elevators. The elevator pit safety device comprises a supporting piece and a limiting switch assembly. The supporting piece is movably installed on the bottom pit ground and can form a vertical state and a horizontal state, the supporting piece has a preset length so that a maintenance space with a preset height can be formed between the supporting piece and the bottom pit ground when the supporting piece is in the vertical state, and a first buffering piece is arranged at the free end of the supporting piece. The limiting switch assembly comprises a first limiting switch and a second limiting switch, the first limiting switch is triggered when the supporting piece is in a vertical state to enable the elevator to be in a maintenance state, and the second limiting switch is triggered when the supporting piece is in a horizontal state to enable the elevator to be in a normal operation state. Under the supporting effect of the elevator pit safety device, it can be guaranteed that enough safety space is reserved for maintainers when an elevator pit is shallow.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to an elevator pit safety device. Background Art

[0002] To improve residents' quality of life and promote urban renewal, my country has been renovating a large number of old residential communities in recent years. Installing elevators in these old communities is an important part of this renovation.

[0003] However, due to limitations such as the ground beams and pedestals of old buildings, the elevator pit is generally shallow when installing an elevator. On the one hand, when an elevator breaks down, it is inconvenient for maintenance personnel to enter the elevator pit for inspection. On the other hand, the shallow pit cannot reach the pit depth required by safety technical specifications and the elevator cannot be installed.

[0004] In order to solve the above problems, there is an urgent need for a device that can ensure maintenance space for maintenance personnel during pit maintenance when the elevator pit is insufficient and meet the safety regulations for elevator installation. Utility Model Content

[0005] One purpose of the utility model is to solve the problem of insufficient pit depth when installing elevators in existing old communities, which leads to failure to meet elevator safety requirements.

[0006] In particular, an embodiment of the present application provides an elevator pit safety device, comprising:

[0007] a support member movably mounted on the pit floor and configured to form a vertical state or a horizontal state, the support member having a predetermined length so as to form a maintenance space of a predetermined height between the support member and the pit floor when in the vertical state, and a first buffer member being provided at a free end of the support member;

[0008] The limit switch assembly includes a first limit switch and a second limit switch. When the support member is in a vertical state, the first limit switch is triggered to put the elevator in a maintenance state. When the support member is in a horizontal state, the second limit switch is triggered to put the elevator in a normal operating state.

[0009] Furthermore, the support member is connected to the pit floor via a hinge.

[0010] Furthermore, the two parts of the hinge that can rotate relative to each other are respectively connected to the first connecting member and the second connecting member, the first connecting member is also fixedly connected to the pit floor, and the second connecting member is also fixedly connected to the support member, and the first connecting member and the second connecting member are both flat.

[0011] Furthermore, the support member includes two rods and a bridge plate on which the free ends of the two rods are provided, the first buffer member is fixed on the bridge plate, the first connecting member, the second connecting member and the hinge are two, the two second connecting members are respectively connected to the two rods and the two hinges, and the two hinges are respectively connected to the two first connecting members.

[0012] Furthermore, the elevator pit safety device also includes a fixing member, which fixes the support member when the support member is erected vertically to keep the support member stable.

[0013] Furthermore, a through hole is provided on the second connecting member, and the fixing member includes a bolt and a nut. The bolt is preset on the floor of the pit. When the support rod is erected vertically, the bolt passes through the through hole and is locked by the nut.

[0014] Furthermore, the elevator pit safety device also includes a second buffer member arranged on the pit floor, the height of the second buffer member is greater than the height of the support member after being horizontally folded down and the height of the limit switch assembly. When the elevator is in normal operation and approaches the elevator pit safety device, it first contacts the second buffer member.

[0015] Furthermore, the first buffer member and the second buffer member are both arranged at a center position relative to the ground.

[0016] The beneficial effects of the utility model are:

[0017] 1. The support member prevents the elevator car from falling and injuring maintenance personnel. By setting up a limit switch assembly, the elevator's operating state can be adjusted to further ensure the safety of maintenance personnel. Furthermore, by linking the vertical and horizontal states of the support member with the triggering of the limit switch assembly, maintenance personnel can directly enter the maintenance state and shut down the elevator when the support member is vertical, facilitating maintenance operations.

[0018] 2. By using the plate as a connecting piece, the connection between the support and the elevator pit floor is made more stable.

[0019] 3. By providing the fixing member, when the support member is erected vertically, the fixing member fixes the support member, so that the support member remains stable, thereby enhancing the stability of the support member when supporting the elevator car. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a support rod in an elevator pit safety device according to one embodiment of the present invention when it is erected vertically;

[0021] Figure 2This is a schematic structural diagram of a support rod in an elevator pit safety device according to an embodiment of the present invention when placed horizontally.

[0022] In the picture:

[0023] 100- elevator pit safety device; 1- support member; 11- rod member; 12- bridge plate; 2- pit floor; 3- first buffer member; 4- limit switch assembly; 41- first limit switch; 42- second limit switch; 5- hinge; 6- connecting member; 61- first connecting member; 62- second connecting member; 7- fixing member; 71- bolt; 72- nut; 8- through hole; 9- second buffer member. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It will be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some, rather than all, structures related to the present application are shown in the accompanying drawings. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0025] As used herein, the terms "comprise," "comprising," and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0026] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0027] An elevator pit safety device 100 of the present invention is characterized in that it includes: a support member 1 and a limit switch assembly 4. The support member 1 is movably mounted on the pit floor 2 and can be formed into a vertical state and a horizontal state. The support member 1 has a preset length so that a maintenance space with a preset height is formed between the support member 1 and the pit floor 2 when in a vertical state. A first buffer member 3 is provided at the free end of the support member 1. The limit switch assembly 4 includes a first limit switch 41 and a second limit switch 42. When the support member 1 is in a vertical state, the first limit switch 41 is triggered to put the elevator in a maintenance state. When the support member 1 is in a horizontal state, the second limit switch 42 is triggered to put the elevator in a normal operating state.

[0028] When the elevator needs to be repaired, the support member 1 is erected vertically. When the elevator car runs to the pit, the first buffer member 3 on the support member 1 abuts against the bottom of the elevator car to play a buffering role.

[0029] The support member 1 prevents the elevator car from falling and injuring maintenance personnel. The limit switch assembly 4 is provided to adjust the elevator's operating state, further ensuring the safety of maintenance personnel. Furthermore, by associating the vertical and horizontal states of the support member 1 with the triggering of the limit switch assembly 4, maintenance personnel can directly put the elevator into maintenance mode and shut down the elevator when the support member 1 is vertical, facilitating maintenance operations.

[0030] In one embodiment, the support member 1 is connected to the pit floor 2 via a hinge 5, which enables the support member 1 to be erected vertically and placed horizontally, while making the structure simpler.

[0031] In one embodiment, the two relatively rotatable parts of the hinge 5 are connected to a first connecting member 61 and a second connecting member 62, respectively. The first connecting member 61 is also fixedly connected to the pit floor 2, and the second connecting member 62 is also fixedly connected to the support member 1. The first connecting member 61 and the second connecting member 62 are both flat. By connecting the hinge 5 to the flat first and second connecting members 61, 62, the hinge 5 is prevented from being unstable after being fixed to the support member 1 due to uneven pit floor 2.

[0032] In one embodiment, the support member 1 includes two rods 11 and a bridge plate 12 provided with the free ends of the two rods 11. The first buffer member 3 is fixed to the bridge plate 12. There are two first connectors 61, two second connectors 62, and two hinges 5. The two second connectors 62 are respectively connected to the two rods 11 and the two hinges 5, and the two hinges 5 are respectively connected to the two first connectors 61. By providing the connector 6 with two rods 11, the support strength of the support member 1 is ensured while avoiding material waste and reducing costs.

[0033] The elevator pit safety device 100 of the present invention also includes a fixing member 7. When the support member 1 is erected vertically, the fixing member 7 fixes the support member 1, so that the support member 1 remains stable and enhances the stability of the support member 1 when supporting the elevator car. In one embodiment, a through hole 8 is provided on the second connecting member 62. The fixing member 7 includes a bolt 71 and a nut 72. The bolt 71 is preset on the pit floor 2. When the support member 1 is erected vertically, the bolt 71 passes through the through hole 8 and is locked by the nut 72. In another embodiment, the fixing member 7 is two sets of inclined rod assemblies, each inclined rod assembly includes two oppositely arranged inclined rods, each inclined rod includes a fixed end connected to the pit floor 2 by a hinge, and the other end is a free end. The free end is provided with a mating portion adapted to the outer surface of the inclined rod. When each two oppositely arranged inclined rods support a support rod, the mating portions of the inclined rods can be engaged with each other, confining the support rod between the two mating portions, thereby ensuring the stability of the support rod when erected vertically.

[0034] The elevator pit safety device 100 of the present invention also includes a second buffer member 9 arranged on the pit floor 2, and the height of the second buffer member 9 is greater than the height of the support member 1 after being horizontally laid down and the height of the limit switch assembly 4. When the elevator is in normal operation and approaches the elevator pit safety device 100 of the present invention, it first contacts the second buffer member 9 to prevent the elevator car from crushing the elevator pit installation device 100 of the present invention.

[0035] In one embodiment, the first buffer 3 and the second buffer 9 are both arranged at a central position relative to the pit floor 2. When the elevator car approaches the elevator pit safety device 100 of the present invention, the first buffer 3 or the second buffer 9 is against the center position of the bottom of the elevator car and is on the same vertical line as the center of gravity of the elevator car, thereby preventing the elevator car from tilting.

[0036] The above embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the concept of the present invention, and these variations and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. An elevator pit safety device, characterized in that: include: a support member movably mounted on the pit floor and configured to form a vertical state or a horizontal state, the support member having a predetermined length so as to form a maintenance space of a predetermined height between the support member and the pit floor when in the vertical state, and a first buffer member being provided at a free end of the support member; The limit switch assembly includes a first limit switch and a second limit switch. When the support member is in a vertical state, the first limit switch is triggered to put the elevator in a maintenance state. When the support member is in a horizontal state, the second limit switch is triggered to put the elevator in a normal operating state.

2. The elevator pit safety device according to claim 1, characterized in that: The support member is connected to the pit floor via a hinge.

3. The elevator pit safety device according to claim 2, characterized in that: The two parts of the hinge that can rotate relative to each other are respectively connected to the first connecting member and the second connecting member. The first connecting member is also fixedly connected to the pit floor, and the second connecting member is also fixedly connected to the support member. The first connecting member and the second connecting member are both flat.

4. The elevator pit safety device according to claim 3, characterized in that: The support member includes two rods and a bridge plate on which the free ends of the two rods are provided. The first buffer member is fixed on the bridge plate. There are two first connecting members, two second connecting members and two hinges. The two second connecting members are respectively connected to the two rods and the two hinges. The two hinges are respectively connected to the two first connecting members.

5. The elevator pit safety device according to claim 3, characterized in that: It also includes a fixing member, which fixes the supporting member when the supporting member is erected vertically to keep the supporting member stable.

6. The elevator pit safety device according to claim 5, characterized in that: The second connecting member is provided with a through hole, and the fixing member includes a bolt and a nut. The bolt is preset on the floor of the pit. When the supporting member is erected vertically, the bolt passes through the through hole and is locked by the nut.

7. The elevator pit safety device according to any one of claims 1 to 6, characterized in that: It also includes a second buffer member arranged on the pit floor, the height of the second buffer member is greater than the height of the support member after being horizontally folded down and the height of the limit switch assembly. When the elevator is in normal operating state and approaches the elevator pit safety device, it first contacts the second buffer member.

8. The elevator pit safety device according to claim 7, characterized in that: The first buffer member and the second buffer member are both arranged at a center position relative to the ground.

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