CN203806990U

CN203806990U - Force measurement sensing device matched with torque limiter in four-bar linkage portal crane

Info

Publication number: CN203806990U
Application number: CN201420191204.3U
Authority: CN
Inventors: 陈膑斌; 陈国兴
Original assignee: ZHANGJIAGANG CITY JIANGNAN ELECTRONICS Co Ltd
Current assignee: ZHANGJIAGANG CITY JIANGNAN ELECTRONICS Co Ltd
Priority date: 2014-04-21
Filing date: 2014-04-21
Publication date: 2014-09-03
Anticipated expiration: 2024-04-21

Abstract

The utility model discloses a force measurement sensing device matched with a torque limiter in a four-bar linkage portal crane. The force measurement sensing device comprises a base, wherein the four-bar linkage mechanism consisting of an arm frame, a pull rod, an elephant trunk beam and a rack amplitude variation device is arranged in the base, a reinforcing beam is arranged at the top of the elephant trunk beam and is composed of an upper beam arm and a lower beam arm which are shaped like a lambda-shaped beam, the outer end of the upper beam arm is fixed to the upper end of the elephant trunk beam, the outer end of the lower beam arm is fixed to the lower end of the elephant trunk beam, a tension ring is arranged at the upper surface of the lower beam arm, each of the upper end and the lower end of the tension ring is connected with a tension bar with a fixed block, the fixed blocks located at the upper side and the lower side of the tension ring are respectively fixed on the upper surface of the lower beam arm, a pair of cambered plates are symmetrically arranged in the tension ring, the upper end and the lower end of each cambered plate are respectively fixed to the upper end and the lower end of the tension ring, a displacement sensor is arranged on one cambered plate, and a sensing probe of the displacement sensor supports against the other cambered plate. The force measurement sensing device has the advantages of light weight, small size, and convenience in installation.

Description

The force-measuring sensing device coordinating with limiter of moment in Four-link door machine

Technical field

The utility model relates to the force-measuring sensing device coordinating with limiter of moment in Four-link door machine.

Background technology

Four-link door seat formula hoisting crane (being called for short " Four-link door machine ") is one of topmost hoisting device of port operation, and Four-link door machine comprises four-bar linkage, lift heavy mechanism and safety guard, as shown in Figure 1, wherein the structure of four-bar linkage is: comprise support 1, jib 2, pull bar 3, trunk beam 4, tooth bar luffing device 5 and balancing device 6, the two ends of pull bar 3 are respectively arranged with on pull bar hinge 9 under hinge 8 and pull bar, the two ends of jib 2 are respectively arranged with on jib hinge 11 under hinge 10 and jib, pull bar 3 is hinged by hinge under pull bar 9 and support 1, pull bar 3 is hinged by hinge on pull bar 8 and the pin jointed end of trunk beam 4, jib 2 is hinged by hinge under jib 11 and support 1, jib 2 is hinged by hinge on jib 10 and the drive end of trunk beam 4, when tooth bar luffing device 5 drives jibs 2 hinge 11 rotates under jib, the drive end of the Timing Belt involuntary movements bridge of the nose 4 hinge 8 on pull bar rotates, and drive pull bar 3 hinge 9 under pull bar to rotate simultaneously, wherein the structure of lift heavy mechanism is: outside the drive end of trunk beam 4, freely-movable bearing has beam front-wheel 12, on the close pull bar of pull bar 3, hinge 8 place's freely-movable bearings have front intermediate gear 13, the upper end of support 1 also freely-movable bearing have after third wheel 14, in support 1, be also provided with the wire reel 16 that is wound with hoist rope 15, hoist rope 15 is walked around rear third wheel 14, front intermediate gear 13 and the rear lifting weight 33 of beam front-wheel 12 in turn.

In Four-link door machine, limiter of moment matches with device for measuring force and forms a kind of conventional safety guard, by limiter of moment and the device for measuring force safety guard-safeguard of incompatible realization to Four-link door machine that match, that is: device for measuring force is delivered to limiter of moment by the weight weight signal measuring by signal wire (SW), limiter of moment detects the nominal payload whether weight weight exceeds Four-link door machine more automatically, and then makes corresponding safety control; The structure of the device for measuring force using is at present: comprise mounting bracket 17, on mounting bracket 17, freely-movable bearing has movable axis 18, on the axle body of movable axis 18, be fixed with compensating bar 19, the two ends of compensating bar 19 are movably set with respectively balance wheel 20 and force-measuring wheel 21, balance wheel 20 and force-measuring wheel 21 lay respectively at the both sides of movable axis 18, under the compensating bar 19 between balance wheel 20 and movable axis 18, on mounting bracket 17, are provided with weighing sensor 22.The principle of work of this device for measuring force is: first the hoist rope on wire reel 16 15 is walked around to rear third wheel 14, then through under force-measuring wheel 21 and walk around force-measuring wheel 21, and then walk around in turn front intermediate gear 13 and beam front-wheel 12; After hoist rope 15 lifting weights 33, hoist rope 15 is tightened under the effect of weight 33, under the application force effect that force-measuring wheel 21 produces when hoist rope 15 is tightened, upwards lift, pass through lever principle, on force-measuring wheel 21, lift and can make balance wheel 20 move downward and press down weighing sensor 22, the weight signal of weighing sensor 22 and then stressed generation weight, weighing sensor 22 is transferred to limiter of moment by signal wire (SW) by the weight weight signal of generation, thereby realizes the dynamometry operation of device for measuring force to weight 33.The shortcoming of this device for measuring force is: on the one hand, because device for measuring force Heavy Weight, volume are large, the installation and removal on Four-link door machine are extremely inconvenient, and also difficulty of maintenance; And in use easily generation wearing and tearing of the force-measuring wheel in device for measuring force, and then cause dynamometry error, and need regularly to force-measuring wheel, carry out maintenance, greatly increased labor strength; On the other hand, in Four-link door machine, mainly by four independently hoist rope carry out lift heavy, because every hoist rope all needs to configure a set of device for measuring force and a weighing sensor, such four hoist ropes just need to configure quadruplet device for measuring force and four weighing sensors, the price of this quadruplet device for measuring force and four weighing sensors is approximately 20,000 yuan of left and right, has greatly increased enterprise's production and application cost.

Utility model content

The purpose of this utility model is to provide a kind of lightweight, and volume is little, easy for installation, the force-measuring sensing device coordinating with limiter of moment in the low Four-link door machine of enterprise's production and application cost.

For achieving the above object, the utility model has adopted following technical scheme: the force-measuring sensing device coordinating with limiter of moment in described Four-link door machine, comprise: support, on support, be provided with by jib, pull bar, the four-bar linkage that trunk beam and tooth bar luffing device form, top at trunk beam is provided with strength beam, strength beam is comprised of the upper beam arm and the lower beam arm that are herringbone beam's shape, the upper end of the outer end of upper beam arm and trunk beam fixes, the outer end of lower beam arm fixes with the lower end that resembles arm beam, upper surface at lower beam arm is provided with tension ring, the two ends up and down of tension ring are connected with respectively a tension bar that fixed block is installed, the fixed block that is positioned at the upper and lower both sides of tension ring fixes with the upper surface of lower beam arm respectively, in tension ring, be symmetrically arranged with a pair of cambered plate, the two ends up and down of each cambered plate fix with the two ends up and down of tension ring respectively, on a cambered plate, be provided with displacement pickup therein, the sensing probe of displacement pickup withstands on the relative inner face of another cambered plate.

Further, the force-measuring sensing device coordinating with limiter of moment in aforesaid Four-link door machine, wherein: on the cambered plate relative with displacement pickup, be provided with push rod, the sensing probe of displacement pickup withstands on push rod.

Further, the force-measuring sensing device coordinating with limiter of moment in aforesaid Four-link door machine, wherein: the concave side of described two cambered plates is oppositely arranged.

Further, the force-measuring sensing device coordinating with limiter of moment in aforesaid Four-link door machine, wherein: displacement pickup is installed on the midway location of cambered plate.

By the enforcement of technique scheme, the utlity model has lightweightly, volume is little, easy for installation, the advantage that enterprise's production and application cost is low.

Accompanying drawing explanation

Fig. 1 is the principle of work schematic diagram of the Four-link door machine described in background technology.

Fig. 2 is the mounting structure schematic diagram of the force-measuring sensing device that coordinates with limiter of moment in Four-link door machine described in the utility model.

Fig. 3 is that the installation site of tension ring, cambered plate, tension bar and strength beam in the left apparent direction of Fig. 2 is related to schematic diagram.

The specific embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.

As Fig. 2, shown in Fig. 3, the force-measuring sensing device coordinating with limiter of moment in described Four-link door machine, comprise: support 1, on support 1, be provided with by jib 2, pull bar 3, the four-bar linkage that trunk beam 4 and tooth bar luffing device 5 form, top at trunk beam 4 is provided with strength beam, strength beam is comprised of with lower beam arm 72 the upper beam arm 71 that is mutually herringbone beam's shape, the upper end of the outer end of upper beam arm 71 and trunk beam 4 fixes, the outer end of lower beam arm 72 fixes with the lower end that resembles arm beam 4, the cross-sectional plane of lower beam arm 72 takes the shape of the letter U, upper surface at the base plate 73 of lower beam arm 72 is provided with tension ring 23, the upper end of tension ring 23 is fixed with a upper pulling force bar 24, on upper pulling force bar 24, be fixed with fixed block 25, in the lower end of tension ring 23, be fixed with a lower pulling force bar 26, on lower pulling force bar 26, be fixed with lower fixed block 27, upper fixed block 25 and lower fixed block 27 fix with the upper surface of the base plate 73 of lower beam arm 72 respectively, in tension ring, be symmetrically arranged with left curved shape plate 28 and right cambered plate 29, the two ends up and down of left curved shape plate 28, and the two ends up and down of right cambered plate 29 fix with the two ends up and down of tension ring 23 respectively, on right cambered plate 29, be provided with displacement pickup 30, the sensing probe 31 of displacement pickup 30 withstands on the relative inner face of left curved shape plate 28, in the present embodiment, midway location at the concave side of left curved shape plate 28 is provided with push rod 32, displacement pickup 30 is installed on the midway location of right cambered plate 29, the sensing probe 31 of displacement pickup 30 withstands on push rod 32, by coordinating of push rod 32 and displacement pickup 30, can make the deformation quantity that displacement pickup 30 is more convenient, measure more accurately lower beam arm 72, when actual installation is used, only displacement pickup 30 need be connected with limiter of moment by signal wire (SW).

Principle of work of the present utility model is: when hoist rope 15 hangs on after weight 33, under the gravity of weight 33, can there is up-down stretch deformation in the lower beam arm 72 of strength beam 7, after lower beam arm 72 deformation, by upper pulling force bar 24 and lower pulling force bar 26, drive tension ring 23 that up-down stretch deformation occurs, there is up-down stretch deformation in synchronous left curved shape plate 28 and the right cambered plate 29 of driving, because left curved shape plate 28 and right cambered plate 29 are arc, when left curved shape plate 28 and right cambered plate 29 occur after up-down stretch deformation, can make left curved shape plate 28 and the radian of right cambered plate 29 change and make the recessed side arch section of the two mutually close, also be that left curved shape plate 28 is mutually drawn close with the relative inner face of right cambered plate 29 and relative displacement occurs changed, when the relative inner face of left curved shape plate 28 and right cambered plate 29 is mutually close, displacement pickup 30 is measured the displacement variable between left curved shape plate 28 and right cambered plate 29 by sensing probe 31 and coordinating of push rod 32, and by signal wire (SW), the variation numerical value obtaining is transferred to limiter of moment, after weight unloading, the upper beam arm 72 meeting reinstatements of strength beam, drive left curved shape plate 28 and right cambered plate 29 reinstatements.The utility model has the advantages that: not only simple in structure, easy to operate, and volume is little, lightweight, I&M is convenient, simultaneously owing to just measuring the weight of Four-link door machine lifted weight by the deformation quantity of employing displacement sensor rigidity framing member, and needn't by quadruplet device for measuring force, coordinate the weight that could measure lifted weight with four weighing sensors and hoist rope again, therefore this force-measuring sensing apparatus cost is low, only need 2000-3000 unit, greatly reduced the production and application cost of enterprise.

Claims

1. the force-measuring sensing device coordinating with limiter of moment in Four-link door machine, comprise: support, on support, be provided with by jib, pull bar, the four-bar linkage that trunk beam and tooth bar luffing device form, it is characterized in that: the top at trunk beam is provided with strength beam, strength beam is comprised of the upper beam arm and the lower beam arm that are herringbone beam's shape, the upper end of the outer end of upper beam arm and trunk beam fixes, the outer end of lower beam arm fixes with the lower end that resembles arm beam, upper surface at lower beam arm is provided with tension ring, the two ends up and down of tension ring are connected with respectively a tension bar that fixed block is installed, the fixed block that is positioned at the upper and lower both sides of tension ring fixes with the upper surface of lower beam arm respectively, in tension ring, be symmetrically arranged with a pair of cambered plate, the two ends up and down of each cambered plate fix with the two ends up and down of tension ring respectively, on a cambered plate, be provided with displacement pickup therein, the sensing probe of displacement pickup withstands on the relative inner face of another cambered plate.

2. the force-measuring sensing device coordinating with limiter of moment in Four-link door machine according to claim 1, is characterized in that: on the cambered plate relative with displacement pickup, be provided with push rod, the sensing probe of displacement pickup withstands on push rod.

3. the force-measuring sensing device coordinating with limiter of moment in Four-link door machine according to claim 1 and 2, is characterized in that: the concave side of described two cambered plates is oppositely arranged.

4. the force-measuring sensing device coordinating with limiter of moment in Four-link door machine according to claim 3, is characterized in that: displacement pickup is installed on the midway location of cambered plate.