CN206172825U - Modified bridge crane plays to rise stop gear - Google Patents

Abstract

The utility model relates to a modified bridge crane plays to rise stop gear, including the trolley frame, be fixed in limit switch on the trolley frame, pendulum rod, respectively with pendulum rod both ends fixed connection's pendulum and wire rope, cross section fixing device and the connecting rod for the T type, the pendulum rod middle part is articulated with the round pin axle, wire rope's lower extreme passes the trolley frame, fixing device's vertical partial lower extreme passes the trolley frame, and fixed surface is connected on horizontal component and the trolley frame, the connecting rod is located between the hoist wire rope of hoist both sides, and one end is articulated with the vertical partial lower extreme of fixing device, and the other end is connected with the wire rope lower extreme of being connected the pendulum rod. The utility model discloses utilize the connecting rod to replace the weight among the prior art, abandon the weight tray simultaneously, make the connecting rod be located between the wire rope of hoist both sides, guarantee to contact with the connecting rod when hoist rising is transfinited to thoroughly stop weight tray among the prior art because the potential safety hazard that the weight can't be held in the weight swing, improved stability and reliability that bridge crane plays to rise stop gear greatly.

Description

A kind of improved bridge crane raising position-limit mechanism

Technical field

The utility model is related to a kind of improved bridge crane raising position-limit mechanism, belongs to bridge crane safety means Technical field.

Background technology

When bridge crane hoisting mechanism is designed, pre- spacing, the spindle nose stop spacing of spindle nose is had according to national regulation requirement And weight raising is spacing.Existing weight raising position-limit mechanism includes weight, trolley frame, spacing opening of being fixed on trolley frame Pass, swing rod, the pendulum and steel wire rope being fixedly connected with swing rod two ends respectively, swing rod middle part and hinge, the lower end of steel wire rope Through trolley frame, it is fixedly connected with weight by the collar；Weight pallet is welded with crane hanger, when bridge crane lifting machine When structure rises, if it exceeds the height of weight, weight pallet will hold up weight, weight position-limit mechanism for the height of suspender raising Due to the effect without lower section weight gravity, pendulum works makes swing rod be rotated around bearing pin, and pendulum touches limit switch by lifting The whole machine power-off of machine powers off lifting mechanism, it is ensured that crane safety runs.

Existing weight position-limit mechanism is connected by the collar due to weight with the steel wire rope with certain length, in crane Weight is susceptible to swing in the course of work, and when crane hoisting mechanism rising is transfinited, weight pallet occurs often cannot be accurate The situation of weight is held up, causes weight spacing ineffective, the security incident such as suspender and trolley frame collision occurs, and the collar holds Easily rubbed, also result in weight and swing, there is great potential safety hazard.

Utility model content

Technical problem to be solved in the utility model is to provide a kind of improved bridge crane raising position-limit mechanism, should Weight pallet is abandoned by mechanism, and weight of the prior art is substituted using bone shape connecting rod, can thoroughly prevent to trigger because weight swings Security incident, solve background technology defect.

In order to solve the above technical problems, the technical scheme that is used of the utility model for：

A kind of improved bridge crane raising position-limit mechanism, including trolley frame, be fixed on trolley frame limit switch, Swing rod, the pendulum and steel wire rope that are fixedly connected with swing rod two ends respectively, swing rod middle part and hinge, connect the steel wire rope of swing rod Lower end pass through trolley frame；Its improvements is：It is T-shaped fixing device and connecting rod also including cross section, fixing device Vertical portion lower end passes through trolley frame, horizontal component to be fixedly connected with trolley frame upper surface；Connecting rod is located at and hangs ambilateral suspender Between steel wire rope, one end is hinged with fixing device vertical portion lower end, and the other end is connected with the steel wire rope lower end for being connected swing rod.

A kind of improved bridge crane raising position-limit mechanism, the trolley frame two ends have the logical of up/down perforation Hole, the steel wire rope lower end for connecting swing rod is connected through the through hole of trolley frame one end with one end of connecting rod, and through-hole diameter is more than steel wire Rope diameter；The vertical portion lower end of fixing device is hinged through the through hole of the trolley frame other end with the other end of connecting rod.

A kind of improved bridge crane raising position-limit mechanism, it also includes fixed plate, fixed plate and trolley frame one end Upper surface is fixed, and fixed plate bottom surface overlaps with trolley frame upper surface, and the center of fixed plate is provided with the through hole of thickness insertion；It is described Fixing device includes level board and the vertical bar fixed with level board plane perpendicular, and vertical bar lower end passes through the insertion in fixed plate The through hole of hole and trolley frame one end is hinged with connecting rod one end, level board and fixed plate be bolted and level board bottom surface with it is solid Fixed board upper surface overlaps；The connecting rod is bone shape connecting rod, and bone shape connecting rod is passed through and hangs ambilateral wire rope of sling and positioned at suspender Top.

When the utility model is used, the upper height limit for being risen according to suspender first makes fixing device, and adjusts connection pendulum The rope capacity of bar, it is ensured that assembling finishes rear bone shape connecting rod and is the level of state, the vertical range between suspender and bone shape connecting rod Rise upper distance limit with suspender identical；Now, pendulum is lifted away from limit switch under the Action of Gravity Field of connecting rod；Crane work When making, suspender rises, and can be contacted with connecting rod when suspender rises to upper limit position, and meeting jack-up connecting rod, makes when suspender continues to rise Connecting rod is rotated by axle of the pin joint with fixing device vertical bar, and the one end being connected with steel wire rope moves up, and swing rod loses Go balance to touch limit switch along bearing pin rotation under the Action of Gravity Field of pendulum, hoist power-cut is stopped.

The beneficial effects of the utility model are：

The utility model replaces weight of the prior art using connecting rod, while abandoning weight pallet, is located at connecting rod and hangs Between ambilateral wire rope of sling, it is ensured that suspender rises and contacted with connecting rod when transfiniting, so as to thoroughly prevent to weigh in the prior art Hammer pallet swings the potential safety hazard that cannot hold weight due to weight, substantially increases the steady of bridge crane raising position-limit mechanism Qualitative and reliability, it is ensured that the safety of business equipment and personnel.

Brief description of the drawings

Fig. 1 is the utility model installation diagram；

Fig. 2 is the left side view of Fig. 1；

Fig. 3 is fixed plate schematic diagram；

Fig. 4 is utility model works process schematic；

Marked in figure：It is trolley frame 1, limit switch 2, swing rod 3, pendulum 4, steel wire rope 5, bearing pin 6, connecting rod 7, suspender 8, solid Fixed board 9, through hole 10, level board 11, vertical bar 12, bolt 13, wire rope of sling 14.

Specific embodiment

Fig. 1~Fig. 3 shows, a kind of improved bridge crane raising position-limit mechanism of the utility model, including trolley frame 1, It is the limit switch 2 that is fixed on trolley frame 1, swing rod 3, the pendulum 4 being fixedly connected with the two ends of swing rod 3 respectively and steel wire rope 5, transversal Face is T-shaped fixing device, connecting rod 7 and fixed plate 9；The two ends of trolley frame 1 have a through hole of up/down perforation, through hole it is straight Footpath is more than the diameter of steel wire rope 5；Fixing device includes level board 11 and the vertical bar 12 fixed with the plane perpendicular of level board 11；Gu The center of fixed board 9 is provided with the through hole 10 of thickness insertion；Connecting rod 7 is bone shape connecting rod；The middle part of swing rod 3 is hinged with bearing pin 6, connection The lower end of the steel wire rope 5 of swing rod 3 is connected through the through hole of the one end of trolley frame 1 with one end of connecting rod 7, and fixed plate 9 is another with trolley frame 1 The upper surface of one end is fixed, and the bottom surface of fixed rear fixed plate 9 overlaps with the upper surface of trolley frame 1, the through hole 10 in fixed plate 9 Axis overlapped with the through-bore axis at the end of trolley frame 1, the lower end of the vertical bar 12 of fixing device is through the insertion in fixed plate 9 The through hole at hole 10 and the end of trolley frame 1 is hinged with the other end of connecting rod 7；The level board 11 of fixing device passes through spiral shell with fixed plate 9 Bolt 13 is fixed and the bottom surface of level board 11 overlaps with the upper surface of fixed plate 9；Suspender steel of the bone shape connecting rod 7 through the both sides of suspender 8 Cord 14 and positioned at the top of suspender 8.

When the utility model is used, the upper height limit for being risen according to suspender 8 first makes fixing device, and adjusts connection pendulum The length of the steel wire rope 5 of bar 3, it is ensured that assembling finishes rear bone shape connecting rod 7 and is the level of state, hanging down between suspender 8 and bone shape connecting rod 7 Straight distance is identical with the upper distance limit that suspender 8 rises；Now, pendulum 4 is lifted under the Action of Gravity Field of connecting rod 7 and is opened away from spacing Close 2；When crane works, suspender 8 rises, and can be contacted with connecting rod 7 when suspender 8 rises to upper limit position, and suspender 8 continues to rise When can jack-up connecting rod 7, make connecting rod 7 with the pin joint with fixing device vertical bar 12 as axle is rotated, be connected with steel wire rope 5 One end moves up, and the disequilibrium of swing rod 3 touches limit switch 2 under the Action of Gravity Field of pendulum 4 along the rotation of bearing pin 6, makes lifting Machine power-off parking.

Claims (3)

1. a kind of improved bridge crane raising position-limit mechanism, including trolley frame（1）, be fixed on trolley frame（1）On it is spacing Switch（2）, swing rod（3）, respectively with swing rod（3）The pendulum that is fixedly connected of two ends（4）And steel wire rope（5）, swing rod（3）Middle part With bearing pin（6）It is hinged, steel wire rope（5）Lower end pass through trolley frame（1）；It is characterized in that：It is T-shaped consolidating also including cross section Determine device and connecting rod（7）, the vertical portion lower end of fixing device passes through trolley frame（1）, horizontal component and trolley frame（1）Upper table Face is fixedly connected；Connecting rod（7）Positioned at suspender（8）The wire rope of sling of both sides（14）Between, the vertical portion of one end and fixing device Point lower end be hinged, the other end and steel wire rope（5）Lower end connection.

2. a kind of improved bridge crane raising position-limit mechanism as claimed in claim 1, it is characterised in that：The trolley frame （1）Two ends have the through hole of up/down perforation, connect swing rod（3）Steel wire rope（5）Lower end pass through trolley frame（1）One end Through hole and connecting rod（7）One end connection, through hole with diameter greater than steel wire rope（5）Diameter；Under the vertical portion of fixing device Hold through trolley frame（1）The through hole and connecting rod of the other end（7）The other end be hinged.

3. a kind of improved bridge crane raising position-limit mechanism as claimed in claim 1 or 2, it is characterised in that：It is also wrapped Include fixed plate（9）, fixed plate（9）With trolley frame（1）The upper surface of one end is fixed, fixed plate（9）Bottom surface and trolley frame（1）'s Upper surface overlaps, fixed plate（9）Center be provided with the through hole of thickness insertion（10）；The fixing device includes level board（11） And with level board（11）Plane perpendicular fix vertical bar（12）, vertical bar（12）Lower end pass through fixed plate（9）On pass through Through hole（10）And trolley frame（1）The through hole and connecting rod of one end（7）One end be hinged, level board（11）With fixed plate（9）By spiral shell Bolt（13）Fixed and level board（11）Bottom surface and fixed plate（9）Upper surface overlap；The connecting rod（7）It is bone shape connecting rod, bone Shape connecting rod（7）Through suspender（8）The wire rope of sling of both sides（14）And positioned at suspender（8）Top.