CN201151596Y - Falling proof device of elevator lift-cabin - Google Patents

Abstract

The utility model relates to an elevator-car falling-prevention device, comprising a fixed end and a free end. The free end comprises a support provided with a through hole and a bolt arranged in the through hole by a sliding way; a lock hole is arranged on the surface corresponding to the fixed end and the free end. When the falling-prevention device is operating, the front end of the bolt separates from the through hole. The falling-prevention device also comprises a safety apparatus, comprising at least one physical lock mechanism used to retain the falling-prevention device at operating state or non-operating state; when the physical lock mechanism is at locking state, relative slide does not take place between the bolt and the through hole. Because the falling-prevention mechanism has a safety apparatus, the bolt does not slide out of the lock hole under operating state, and as a result, accidents can be avoided.

Description

The lift car falling proof device

Technical field

The utility model relates to a kind of when lift car is in inspecting state, prevents the safety convenience instrument that it falls.

Background technology

Because the path of motion of elevator is vertical direction usually, and places a vertical hoistway of osed top, so the fall arrest measure of car is particularly important, directly relates to related personnel's life security.When elevator was in inspecting state, some safety components lost efficacy or broke down probably, caused the stability of elevator overhead positions in vertical hoistway to be on the hazard.Especially for machine-roomless lift, because its towing machine and car are arranged in same hoistway, so in the time must keeping in repair or maintain, the car of elevator must be fixed on a certain position to towing machine.

In the prior art, be used to realize that the most common form of fall arrest is lift car safety tongs and bolt-type falling proof device.Safety tongs is just action in case of emergency only.Though elevator safety gear is the parts of each elevator indispensability, but when it moves, tend to cage guide and lift car are caused the certain physical infringement, therefore can not all lift car be fixed in a certain position in each maintenance by the action of safety tongs.The bolt-type falling proof device makes it can keep vacant state by the degree of freedom of latch restriction car in the vertical direction.But latch degree of freedom in the horizontal direction is not restricted, and causes it still stable inadequately down in working order.In case latch skids off from lockhole, major accident will take place.

The utility model content

The purpose of this utility model is to disclose a kind of bolt-type lift car falling proof device that has safety device.

The utility model is achieved through the following technical solutions:

A kind of lift car falling proof device comprises fixed end and movable end, and the wherein end in described fixed end and the described movable end is fixedly installed on the guide rail, and the other end in described fixed end and the described movable end is fixedly installed on car or the sedan-chair frame; Described movable end comprises that the support and the slip that have through hole are plugged in the interior latch of described through hole; Described fixed end with described movable end facing surfaces on have lockhole; When described falling proof device was in running order, the leading section of described latch was inserted in the described lockhole; When described falling proof device was in off working state, the leading section of described latch and described lockhole were separated.Described falling proof device also comprises safety device, this safety device comprises at least one and is used for described falling proof device is remained on physics lockout mechanism under mode of operation or the off working state, when this physics lockout mechanism is in the lock state, can not produce slide relative between described latch and the described through hole.

Described physics lockout mechanism comprise the screw that is opened on the described fixed end sidewall, with this screw bolt, clamp nut, at least one groove of on the side surface of described latch, offering of screw thread fit mutually with this bolt phase screw thread fit, one end of described screw is connected with described through hole, the bottom land of described groove is a plane, this plane and described screw axially perpendicular; When described physics lockout mechanism was in the lock state, the bottom land plane of the end face of described bolt and described groove was inconsistent, and the cell wall that the part of the part side surface of described bolt and described groove is radially extended is inconsistent.Described groove number is 1, and this groove is along the axially extended strip shape of described latch; Sliding stroke length when the length of this groove switches to mode of operation with the off working state from described falling proof device of described latch is identical.

Described movable end is arranged on the car, and described fixed end is arranged on the guide rail.

Described safety device also comprises and the described latch non-automatic-reset switch that is used to control elevator safety circuit of interlock setting mutually; Described phase interlock set-up mode is: when described falling proof device was in running order, described non-automatic-reset switch was in closure state, and when described falling proof device was in off working state, described non-automatic-reset switch was in off-state; When this non-automatic-reset switch was in closure state, elevator safety circuit was for opening circuit, and when described non-automatic-reset switch was in off-state, elevator safety circuit was a path.

A kind of scheme of implementing described non-automatic-reset switch is: described non-automatic-reset switch comprises baffle plate and the outstanding contact that is arranged on the same sidepiece of described support that protrusion is arranged on described latch one sidepiece; When described falling proof device was in running order, described plate washer contacted with described contact, and described non-automatic-reset switch is in closure state.

The another kind of scheme of implementing described non-automatic-reset switch is: described non-automatic-reset switch comprises baffle plate that is arranged on described latch leading section and the contact that is arranged on the described fixed end; When described falling proof device was in running order, described plate washer contacted with described contact, and described non-automatic-reset switch is in closure state.

The lift car falling proof device of implementing according to the utility model has following advantage:

1, possess safety device, this safety device can limit the motion of its inner latch when the lift car falling proof device is in running order.When safety device was in the lock state, latch can not deviate from from lockhole.

2, simple in structure, can be directly on the basis of the lift car falling proof device of prior art, reequip, real

Description of drawings

Accompanying drawing 1 is the front view of the utility model under off working state of implementing according to embodiment 1;

Accompanying drawing 2 is the utility model of implementing according to embodiment 1 front view under in working order;

Accompanying drawing 3 is the utility model of implementing according to embodiment 2 birds-eye view under in working order;

Wherein: 1, fixed end; 2, movable end; 3, lockhole; 4, latch; 41, groove; 5, physics lockout mechanism; 51, screw; 52, bolt; 6, support; 61, through hole; 7, safety device; 8, non-automatic-reset switch; 81, baffle plate; 82, contact; 9, car; 10, guide rail.

The specific embodiment

Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described:

Embodiment 1:

As shown in Figures 1 and 2, a kind of lift car falling proof device comprises fixed end 1 and movable end 2.Wherein, described fixed end 1 utilizes threaded fasteners to be fixedly installed on the guide rail 10 of elevator.Described movable end 2 comprises the support 6 that has through hole 61 and slides and be plugged in latch 4 in the through hole 61 that described support 6 utilizes threaded fasteners to be fixedly installed on a sidepiece of lift car 9.

Fixed end 1 with described movable end 2 facing surfaces on have lockhole 3.

As shown in Figure 2, when the utility model was in running order, the front end position of latch 4 was inserted in the described lockhole 3; As shown in Figure 1, when the utility model was in off working state, the leading section of latch 4 and described through hole 61 were separated.

The falling proof device of implementing according to present embodiment also comprises safety device 7, and this safety device 7 comprises physics lockout mechanism 5 and non-automatic-reset switch 8.

Wherein, the effect of physics lockout mechanism 5 is in running order or off working state following times at the utility model, all latch 4 can be fixed in the described through hole 61, makes between itself and the through hole 61 and can not produce slide relative.This physics lockout mechanism 5 comprise the screw 51 that is opened on fixed end 2 sidewalls, with this screw 51 mutually screw thread fit bolt 52, with the clamp nut 53 of bolt 52 phase screws thread fit, axially be opened in a strip shape groove 41 on its side surface along latch 4.One end of described screw 51 is connected with described through hole 61, and the bottom land of described groove 41 is a plane, this plane and described screw 51 axially perpendicular.Sliding stroke length when simultaneously, the length of groove 41 switches to mode of operation with the off working state from described falling proof device of latch 4 is identical.Bolt 52 is screwed in the screw 51, makes the bottom land plane of the end face of bolt 52 and groove 41 inconsistent, and make clamp nut 52 also with bolt 52 screw thread fit mutually, an end face of clamp nut is against on the surface of support 6, play fastening effect.This moment, described physics lockout mechanism 5 was in the lock state.When the utility model was in running order, as shown in Figure 2, the rear end cell wall of the rearward end of bolt 52 and groove 41 was inconsistent, and when the utility model was in off working state, as shown in Figure 1, the front end cell wall of the leading section of bolt 52 and groove 41 was inconsistent.

Described non-automatic-reset switch 8 is used to control elevator safety circuit, and with described latch 4 mutually interlock be provided with.When this non-automatic-reset switch 8 was in closure state, elevator safety circuit was for opening circuit, and when this non-automatic-reset switch 8 was in off-state, elevator safety circuit was a path.

In the present embodiment, non-automatic-reset switch 8 comprises the outstanding baffle plate 81 that is arranged on latch 4 afterbodys and stretches out towards the sidepiece of latch 4 and protrudes the contact 82 that is arranged on the support 6 same sidepieces.The front end face of baffle plate 81 is and the perpendicular plane of the direction of slip of latch 4.In running order when described falling proof device, when promptly latch 4 inserted in the lockhole 3, plate washer 81 contacted with contact 82, makes non-automatic-reset switch 8 be in closure state.

Latch 4 is skidded off in lockhole 3, and baffle plate 81 promptly disconnects with electric shock 82 automatically, makes non-automatic-reset switch 8 disconnect, and can recover the path of elevator safety circuit.

The falling proof device of non-automatic-reset switch can guarantee that elevator safety circuit is in off state when it is in running order, avoids owing to the fault of elevator safety circuit elevator being jerked when overhauling, and influences its safety.This non-automatic-reset switch must manually be extracted out latch 4 by the staff from lockhole 3, make it reset, could disconnect, so guaranteed this non-automatic-reset switch can be because of fault etc. former thereby automatic cutout cause the elevator safety circuit path.

Embodiment 2:

As shown in Figure 3, the difference of present embodiment and embodiment 1 is: the front end face of latch 4 is described baffle plate 81, the side opposite with described movable end 2 that contact 82 then is arranged on fixed end 1.When latch 4 insertion lockholes 3, its front end face promptly contacts with contact 82, makes non-automatic-reset switch 8 closures.

As mentioned above, we are illustrated according to aim of the present utility model fully, but the practitioner of correlative technology field can carry out different variations and enforcement in the scope of technological thought permission of the present utility model.

Claims (7)

1, a kind of lift car falling proof device, comprise fixed end (1) and movable end (2), wherein end in described fixed end (1) and the described movable end (2) is fixedly installed on the guide rail, and the other end in described fixed end (1) and the described movable end (2) is fixedly installed on car or the sedan-chair frame;

Described movable end (2) comprises that the support (6) and the slip that have through hole (61) are plugged in the interior latch (4) of described through hole (61);

Described fixed end (1) with described movable end (2) facing surfaces on have lockhole (3);

When described falling proof device was in running order, the leading section of described latch (4) was inserted in the described lockhole (3); When described falling proof device was in off working state, the leading section of described latch (4) and described lockhole (3) were separated,

It is characterized in that: described falling proof device also comprises safety device (7), this safety device (7) comprises at least one and is used for described falling proof device is remained on physics lockout mechanism (5) under mode of operation or the off working state, when this physics lockout mechanism (5) when being in the lock state, can not produce slide relative between described latch (4) and the described through hole (61).

2, lift car falling proof device according to claim 1, it is characterized in that: described physics lockout mechanism (5) comprise the screw (51) that is opened on described fixed end (2) sidewall, with this screw (51) bolt of screw thread fit (52), clamp nut (53), at least one groove (41) of on the side surface of described latch (4), offering mutually with this bolt (52) phase screw thread fit

One end of described screw (51) is connected with described through hole (61), and the bottom land of described groove (41) is a plane, this plane and described screw (51) axially perpendicular;

When described physics lockout mechanism (5) when being in the lock state, the bottom land plane of the end face of described bolt (52) and described groove (41) is inconsistent, and the cell wall that the part of the part side surface of described bolt (52) and described groove (41) is radially extended is inconsistent.

3, lift car falling proof device according to claim 2 is characterized in that: described groove (41) number is 1, and this groove (41) is along the axially extended strip shape of described latch (4);

Sliding stroke length when the length of this groove (41) switches to mode of operation with the off working state from described falling proof device of described latch (4) is identical.

4, lift car falling proof device according to claim 1 is characterized in that: described safety device (7) also comprises and described latch (4) the non-automatic-reset switch (8) that is used to control elevator safety circuit of interlock setting mutually;

Described phase interlock set-up mode is: when described falling proof device was in running order, described non-automatic-reset switch (8) was in closure state, and when described falling proof device was in off working state, described non-automatic-reset switch (8) was in off-state;

When this non-automatic-reset switch (8) when being in closure state, elevator safety circuit is for opening circuit, and when described non-automatic-reset switch (8) when being in off-state, elevator safety circuit is a path.

5, lift car falling proof device according to claim 4 is characterized in that: described non-automatic-reset switch (8) comprises baffle plate (81) and the outstanding contact (82) that is arranged on the same sidepiece of described support (6) that protrusion is arranged on described latch (4) one sidepieces;

When described falling proof device was in running order, described plate washer (81) contacted with described contact (82), and described non-automatic-reset switch (8) is in closure state.

6, lift car falling proof device according to claim 4 is characterized in that: described non-automatic-reset switch (8) comprises the baffle plate (81) that is arranged on described latch (4) leading section and is arranged on contact (82) on the described fixed end (1);

When described falling proof device was in running order, described plate washer (81) contacted with described contact (82), and described non-automatic-reset switch (8) is in closure state.

7, lift car falling proof device according to claim 1 is characterized in that: described movable end (2) is arranged on the car, and described fixed end (1) is arranged on the guide rail.

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