CN208964322U - Folding pit prevents device - Google Patents

Abstract

The utility model discloses folding pits to prevent device, and including the fixed frame hinged with pit, one end of the separate pit of fixed frame is hinged with movable frame through connecting rod；A pair of limit plate with movable frame cooperation is additionally provided in pit, limit plate is equipped with the limit switch contacted with movable frame.The utility model is low with requiring pit, but the characteristics of being applicable in shallow pit.In addition, the utility model has the characteristics that structure is simple, be readily produced installation and cost is relatively low.

Description

Folding pit prevents device

Technical field

The utility model relates to the mechanical stopping device of maintenance in pit, especially folding pit prevents device.

Background technique

Pit is for overhauling cage bottom equipment, such as the space for maintenance of car frame, diversion sheave, safety tongs.When there is dimension Shield personnel need the prevention device of organic tool in pit overhaul, in pit, guarantee there are enough height between carriage and pit, Guarantee the safety of maintenance personnel with this.Therefore, existing pit prevents device from always occupying height.For some shallow bottoms Hole, such as villa or the building for needing to install additional elevator install common pit and device are prevented to need to change civil engineering requirement, in design and It is very troublesome in construction.Therefore, existing pit prevents device from there is the problem of requiring height to pit, can not being applicable in shallow pit.

Utility model content

The purpose of the utility model is to provide folding pits to prevent device.The utility model, which has, wants pit Ask low, but the characteristics of being applicable in shallow pit.In addition, the utility model has, structure is simple, be readily produced installation and cost is relatively low The characteristics of.

The technical solution of the utility model includes: folding pit prevents device, including the fixed frame hinged with pit, Gu Determine frame and is hinged with movable frame through connecting rod far from one end of pit；A pair of limit with movable frame cooperation is additionally provided in pit Position plate, limit plate are equipped with the limit switch contacted with movable frame.

Folding pit above-mentioned prevents in device, and the connecting rod is equipped with rubber sleeve.

Folding pit above-mentioned prevents in device, and the fixed frame is that rotation axis and two rotation struts are constituted U-shaped half frame, rotation axis be arranged in pit, rotation strut cover in connecting rod.

Folding pit above-mentioned prevents in device, and the movable frame is that gag lever post and two swing struts are constituted U-shaped half frame, gag lever post matches with limit plate, swings strut and covers in connecting rod.

Folding pit above-mentioned prevents in device, and the swings strut is arranged in the inside for rotating strut, and In connecting rod, nylon jacket is equipped between adjacent rotation strut and swing strut.

Folding pit above-mentioned prevents in device, and the limit plate includes the fixed part being fixed in pit, with Pit forms the blocking portion for accommodating gag lever post space, and the checkpost of limitation gag lever post.

Folding pit above-mentioned prevents in device, and the limit plate is equipped with the sounding metal cooperated with gag lever post Piece.

Compared with prior art, the utility model realizes different modes by the multi-frames being flexibly connected, and occupies Different height.Under elevator normal operating condition, fixed frame and movable frame are folded, and occupy very small, the Ke Yishi of height With shallower pit.Under inspecting state, fixed frame and movable frame are propped, and are formed triangular structure with pit, are realized resistance Only function.The utility model has achieved the effect that occupy little space again on the basis of realizing prevention function as a result,.

Further, its connecing with carriage can be buffered as rubber sleeve is arranged in the connecting rod of topmost when propping Touching prevents effect good.

Further, two frames are U-shaped structure, and on the one hand this structure type is simple, on the other hand this knot The overlapping of two frames may be implemented in structure, further decreases occupancy height.In addition, nylon jacket can reduce by two kinds of struts in connecting rod End face pivoting friction.

Further, the checkpost structure of limit plate can prevent gag lever post from deviating from, and reduce security risk.

Further, the sounding sheet metal on limit plate can provide state feedback, improve operational safety.

To sum up, the utility model has low to pit requirement, but the characteristics of being applicable in shallow pit.In addition, the utility model Have the characteristics that structure is simple, be readily produced installation and cost is relatively low.

Detailed description of the invention

Fig. 1 is the structural schematic diagram that the utility model is in inspecting state；

Fig. 2 is the structural schematic diagram that the utility model is in normal condition；

Fig. 3 is the enlarged diagram in Fig. 1 at A；

Fig. 4 is the enlarged diagram in Fig. 1 at B；

Fig. 5 is the top view of the limit plate of embodiment two；

Fig. 6 is the side view of the limit plate of embodiment two.

Appended drawing reference: 10- fixed frame, 11- rotation axis, 12- rotate strut, 20- connecting rod, 21- rubber sleeve, 22- Buddhist nun The actor playing a supporting role, 30- movable frame, 31- gag lever post, 32- swing strut, 40- limit plate, 41- limit switch, 42- fixed part, 43- resistance Stopper, 44- checkpost, 45- sounding sheet metal.

Specific embodiment

Below with reference to embodiment, the utility model is described in further detail, but be not intended as to the utility model limit according to According to.

Embodiment one: folding pit prevents device, including a connecting rod 20, and the both ends of connecting rod 20 are from outside to inside It include retaining ring, rotation strut 12, nylon jacket 22 and swing strut 32；Pit is fixed with rotation axis 11 through rotor plate, and two turn Dynamic strut 12 is fixed on the both ends of rotation axis 11；The end of two swing struts 32 is connected through gag lever post 31；It is also set up in pit There is a pair towards opposite limit plate 40, limit plate 40 is matched with gag lever post 31, and limit plate 40 is equipped with and connects with gag lever post 31 The limit switch 41 of touching.

The connecting rod 20 is equipped with rubber sleeve 21.

Limit plate 40 includes the fixed part 42 being fixed in pit, and the blocking portion for accommodating 31 space of gag lever post is formed with pit 43。

Embodiment two: on the basis of example 1, limit plate 40 includes the fixed part 42 being fixed in pit, with pit Form the blocking portion 43 for accommodating 31 space of gag lever post, and the checkpost 44 of limitation gag lever post 31.

The limit plate 40 is equipped with the sounding sheet metal 45 cooperated with gag lever post 31.

Working principle:

As shown in Figure 1, swinging strut 32 in maintenance and rotation strut 12 being propped, as mechanical stopping device.Gag lever post 31 are stuck in a limit plate 40, and the checkpost 44 of limit plate 40 prevents its abjection, and the limit switch 41 on limit plate 40 triggers, carriage It only can be carried out inspection travel.

As shown in Fig. 2, swinging strut 32 when operating normally and rotation strut 12 folding, and swing the U where strut 32 Type frame can be entirely fallen in the U-shaped frame at 12 place of rotation strut, realize completely overlapped, reduction occupancy height.At this point, gag lever post 31 are stuck in another limit plate 40, and the limit switch 41 on limit plate 40 triggers, and carriage not can be carried out inspection travel.

Whenever the utility model changes state, gag lever post 31 is got in a limit plate 40, due to the structure of checkpost 44, limit Position bar 31 can generate impact to sheet metal occurs, and thus 45 sounding of sounding sheet metal, reminds maintenance personnel's gag lever post 31 to beat In place, the empty maloperation for making gag lever post 31 is avoided.This structure is transformed into inspecting state especially for from normal condition, reduces peace Full hidden danger.

Claims (5)

1. folding pit prevents device, it is characterised in that: including the fixed frame (10) hinged with pit, fixed frame (10) one end far from pit is hinged with movable frame (30) through connecting rod (20)；A pair of and movable frame is additionally provided in pit (30) limit plate (40) cooperated, limit plate (40) are equipped with the limit switch (41) contacted with movable frame (30)；Described U-shaped half frame that fixed frame (10) is rotation axis (11) and two rotations strut (12) are constituted, rotation axis (11) are arranged in pit On, rotation strut (12) covers on connecting rod (20)；The movable frame (30) is gag lever post (31) and two swing struts (32) U-shaped half frame constituted, gag lever post (31) are matched with limit plate (40), are swung strut (32) and are covered on connecting rod (20).

2. folding pit according to claim 1 prevents device, it is characterised in that: set in the connecting rod (20) Rubber sleeve (21).

3. folding pit according to claim 1 prevents device, it is characterised in that: the swing strut (32) is set It sets in the inside of rotation strut (12), and on connecting rod (20), between adjacent rotation strut (12) and swing strut (32) Equipped with nylon jacket (22).

4. folding pit according to claim 1 prevents device, it is characterised in that: the limit plate (40) includes The fixed part (42) being fixed in pit forms the blocking portion (43) for accommodating gag lever post (31) space, and limitation limit with pit The checkpost (44) of bar (31).

5. folding pit according to claim 4 prevents device, it is characterised in that: set on the limit plate (40) There is the sounding sheet metal (45) with gag lever post (31) cooperation.