CN203852427U - Indoor tower crane - Google Patents

Abstract

The utility model discloses an indoor tower crane. A room is provided with a ceiling, and the indoor tower crane comprises a fixed frame, a lift jib, a hanging post, a balance mechanism and an adjusting mechanism; the fixed frame is suitable for fixed connection with the ceiling; the lift jib is pivotally connected with the fixed frame through a pivot and thereby can rotate around the pivot within a vertical plane; the hanging post, which is connected with one end of the lift jib, stretches along the vertical direction and can be driven by the lift jib to move up and down; the balance mechanism is arranged on the second end of the lift jib, the balance mechanism and the hanging post are respectively located by both sides of the pivot, and the balance mechanism can move between the second end of the lift jib and the pivot to keep the lift jib in balance; the adjusting mechanism is connected with the balance mechanism in order to adjust the position of the balance mechanism on the lift jib. According to the indoor tower crane disclosed by the utility model, a manual adjustment method is adopted to more quickly and more accurately adjust a load to an ideal position, electricity is not consumed, energy is saved, the environment is protected, and the indoor tower crane is noiseless.

Description

For indoor tower crane

Technical field

This utility model relates to field of medical, especially relates to a kind of for indoor tower crane.

Background technology

In correlation technique, point out, in electric suspension-tower, the initial installation dimension of electric pushrod is large and need battery, thereby causes the volume of electric suspension-tower large.In addition, because the power output of electric pushrod is larger, the in the situation that of constant power, movement velocity is slower, causes the davit rising or falling speed of electric suspension-tower slow, and inconvenient davit reaches ideal position quickly and accurately, and electric suspension-tower in use exists noise.

Utility model content

This utility model is intended at least solve one of technical problem existing in prior art.For this reason, the purpose of this utility model is to propose a kind of for indoor tower crane, and described tower crane is energy-conservation, be convenient to regulate, volume is little, and noiselessness.

According to of the present utility model for indoor tower crane, the described indoor ceiling that has, described tower crane comprises: fixed frame, described fixed frame is suitable for being fixedly connected on described ceiling; Lifting arm, described lifting arm is connected on described fixed frame so that described lifting arm is rotatable around described pivotal axis in perpendicular pivotly by pivotal axis; Davit, described davit is connected to the first end of described lifting arm, and described davit vertically extends and drives removable on above-below direction by described lifting arm; Balanced controls, described balanced controls are located at the second end of described lifting arm, described balanced controls and described davit lay respectively at the both sides of described pivotal axis, and described balanced structure is removable so that described lifting arm keeps balance between described second end of described lifting arm and described pivotal axis; And guiding mechanism, described guiding mechanism is connected to regulate the position of described balanced controls on described lifting arm with described balanced controls.

According to of the present utility model for indoor tower crane, by the mode of manual adjustment, can faster and more accurately the armarium of hanging on davit be adjusted to ideal position, and expand by guiding mechanism is set the weight domain of walker that tower crane can carry, thereby increase the scope of application of tower crane, and without consuming electric energy, energy-conserving and environment-protective, in addition, the compact conformation of tower crane, volume is little, work noiselessness.

Particularly, described balanced controls comprise: at least one pair of air spring, and described at least one pair of, air spring is located in described fixed frame; Two slide blocks, described in each, slide block is connected with one of them in air spring every pair described and drives removable on above-below direction by described air spring; And adjustable skid, described adjustable skid is connected with described two slide blocks respectively pivotly by two connecting rods equal in length, and described adjustable skid is located at described second end of described lifting arm movably.Thus, adopt air spring as power source, reduced the volume of tower crane, and noiselessness, energy-conserving and environment-protective.

Further, further comprise: four guide posts, described four guide posts all vertically extend and each interval is turned up the soil is located in described fixed frame, described in each the two ends of slide block be set in respectively in described four guide posts wherein on two.Thus, guarantee that slide block is only at upper and lower upward sliding, thereby the power that power source air spring is provided is acted on slide block completely effectively, improved the effective rate of utilization of power source.

Alternatively, the middle part of described adjustable skid is provided with a fixed block, and described fixed block is connected with described two slide blocks respectively pivotly by described two connecting rods.Thus, can make the power that power source air spring provides intensively act on adjustable skid, more intensively to act on lifting arm.

Or alternatively, described adjustable skid has two fixed blocks that are spaced apart from each other, described two fixed blocks are connected with described two slide blocks pivotly by described two connecting rods respectively.

Particularly, described second end of described lifting arm is provided with two elevating levers parallel to each other, and described two elevating levers extend along the length direction of described lifting arm, and described adjustable skid is set on described two elevating levers.

Further, described tower crane further comprises: two sleeve pipes, described two sleeve pipe each intervals are turned up the soil and are located on described adjustable skid and are set in respectively on described two elevating levers.Thus, can increase the contact area of adjustable skid and elevating lever, make adjustable skid motion more steady.

Particularly, described guiding mechanism comprises: baffle plate, and described baffle plate is located at described second end of described lifting arm and is positioned at the side away from described pivotal axis of described adjustable skid; Bolt, described bolt is connected with described adjustable skid through described baffle plate; And nut, described nut coordinate with described bolt and be located between described baffle plate and described adjustable skid with will described in be bolted on described baffle plate.Thus, can effectively change adjustable skid and act on the arm of force length on lifting arm, thereby increase the weight fluctuation range that lifting arm can bear load, and then expand the scope of application of tower crane.

Further, described tower crane further comprises: suspension rod, and described suspension rod is located in described davit and is connected to pivotly on described lifting arm by the first axle, and described suspension rod vertically extends; The gimbal lever, the described gimbal lever is located in described lifting arm, the described first end of the described gimbal lever by the second axle be connected pivotly with described suspension rod, described the second end passes through the 3rd axle and is connected pivotly with described fixed frame, wherein said the first axle, described the second axle are all parallel with described pivotal axis with described the 3rd axle, described the second axle be positioned at described the first axle directly over, described the 3rd axle be positioned at described pivotal axis directly over, and the distance between described the second axle and described the first axle equals the distance between described the 3rd axle and described pivotal axis.

Alternatively, described fixed frame comprises: top board; Base plate, described base plate is parallel with described top board and be located at the below of described top board; And at least one fixed bar, at least one fixed bar is located between described top board and described base plate.

Additional aspect of the present utility model and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present utility model.

Accompanying drawing explanation

Fig. 1 is the axonometric chart for indoor tower crane according to this utility model embodiment;

Fig. 2 is the front view of the tower crane shown in Fig. 1;

Fig. 3 is the front view of the fixed frame shown in Fig. 2 and balanced controls;

Fig. 4 is the left view of the fixed frame shown in Fig. 3 and balanced controls;

Fig. 5 is the top view of the lifting arm shown in Fig. 2, balanced controls and guiding mechanism;

Fig. 6 is the fundamental diagram of the tower crane shown in Fig. 1.

Reference numeral:

100: tower crane;

11: top board; 12: base plate;

13: fixed bar; 14: guide post;

15: connecting plate; 151: the first connecting holes;

16: crossbeam; 17: engaging lug; 171: the four mating holes;

2: lifting arm; 21: container cavity; 22: opening; 23: sleeve pipe; 24: elevating lever;

3: davit; 31: suspension rod;

41: air spring; 411: steel cylinder end; 412: push rod end;

421: the first slide blocks; 422: the second slide blocks;

431: adjustable skid; 432: fixed block;

441: first connecting rod; 442: second connecting rod;

51: baffle plate; 52: bolt; 53: nut;

61: pivotal axis; 62: the first axles; 63: the second axles; 64: the three axles;

7: the gimbal lever.

The specific embodiment

Describe embodiment of the present utility model below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment being described with reference to the drawings, be exemplary, only for explaining this utility model, and can not be interpreted as restriction of the present utility model.

In description of the present utility model, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of indications such as " outward " are based on orientation shown in the drawings or position relationship, only this utility model and simplified characterization for convenience of description, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as restriction of the present utility model.

In addition, term " first ", " second ", " the 3rd ", " the 4th " be only for describing object, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the present utility model, except as otherwise noted, the implication of " a plurality of " is two or more.

Disclosing below provides many different embodiment or example to be used for realizing different structure of the present utility model.Of the present utility model open in order to simplify, hereinafter the parts of specific examples and setting are described.Certainly, they are only example, and object does not lie in restriction this utility model.In addition, this utility model can be in different examples repeat reference numerals and/or letter.This repetition is in order to simplify and object clearly, itself do not indicate the relation between discussed various embodiment and/or setting.In addition, the various specific technique that this utility model provides and the example of material, but those of ordinary skills can recognize the property of can be applicable to of other techniques and/or the use of other materials.

In this utility model, unless otherwise clearly defined and limited, First Characteristic Second Characteristic it " on " or D score can comprise that the first and second features directly contact, also can comprise that the first and second features are not directly contacts but contact by the other feature between them.

Below with reference to Fig. 1-Fig. 6, describe according to the tower crane 100 for indoor (scheming not shown) of this utility model first aspect embodiment.Wherein, indoor have a ceiling (scheming not shown).Here, it should be noted that, tower crane 100 is applicable to operating room, clinic and ward etc., and is not limited to this.

As shown in Figure 1, according to this utility model first aspect embodiment for indoor tower crane 100, comprising: fixed frame, lifting arm 2, davit 3, balanced controls and guiding mechanism.Wherein, fixed frame is suitable for being fixedly connected on ceiling, and can form and removably connect with ceiling.

Alternatively, fixed frame comprises: top board 11, base plate 12 and at least one fixed bar 13, and base plate 12 is parallel with top board 11 and be located at the below of top board 11, and at least one fixed bar 13 is located between top board 11 and base plate 12.For example, in the example of Fig. 1, top board 11 is for rectangular slab and can be horizontally fixed on ceiling, wherein on top board 11, can be provided with screwed hole, to be threaded with ceiling, under top board 11, be provided with and top board 11 sizes, the base plate 12 that shape is identical, base plate 12 overlaps with top board 11 projection in the horizontal direction, top board 11 is relative up and down respectively with four drift angles of base plate 12 like this, each drift angle place between top board 11 and base plate 12 arranges respectively a fixed bar 13, so that top board 11 is connected by four fixed bars 13 with base plate 12, wherein each fixed bar 13 all extends along the vertical direction, and upper end extends to top board 11 and is connected with top board 11, lower end extends to base plate 12 and is connected with base plate 12.Thus, four fixed bars 13 can link together top board 11 and base plate 12 securely, and are fixed on ceiling reposefully.

Further, lifting arm 2 is connected on fixed frame pivotly by pivotal axis 61, so that lifting arm 2 is rotatable around pivotal axis 61 in perpendicular.With reference to Fig. 3, fixed frame is provided with two connecting plates 15, two connecting plates 15 are symmetrically arranged on two fixed bars 13 of fixed frame rear side, each connecting plate 15 all vertically arranges and extends along fore-and-aft direction, on each connecting plate 15, be formed with respectively first connecting hole 151, each first connecting hole 151 all runs through corresponding connecting plate 15 along left and right directions, the equal diameters of two the first connecting holes 151, and the center of circle is positioned on same level line, thereby pivotal axis 61 flatly can be located in two the first connecting holes 151, pivotal axis 61 is the circular shaft extending along left and right directions.

Correspondingly, with reference to Fig. 1, Fig. 2 and Fig. 5, lifting arm 2 extends along fore-and-aft direction, and the width of the front end of lifting arm 2 on left and right directions is slightly less than two distances between connecting plate 15, thereby the front end of lifting arm 2 can be extend between two connecting plates 15, on the front end of lifting arm 2, be formed with the first mating holes, the first mating holes runs through lifting arm 2 along left and right directions, and the diameter of the first mating holes equals the diameter of the first connecting hole 151, like this, when assembling lifting arm 2 and fixed frame, can first the front end of lifting arm 2 be extend between two connecting plates 15, then the first mating holes and the first connecting hole 151 align, then pivotal axis 61 is passed to the first connecting hole 151 and the first mating holes along left and right directions, so that lifting arm 2 is pivotally secured on fixed frame, when applying active force to lifting arm 2, lifting arm 2 can rotate centered by pivotal axis 61 in perpendicular.

Further, davit 3 is connected to the first end (example is rear end as shown in Figure 2) of lifting arm 2, and davit 3 vertically extends and drives removable on above-below direction by lifting arm 2.Alternatively, tower crane 100 further comprises: suspension rod 31, and suspension rod 31 is located in davit 3 and is connected to pivotly on lifting arm 2 by the first axle 62, and suspension rod 31 vertically extends.

Particularly, as shown in Figure 2, in lifting arm 2, be formed with container cavity 21, container cavity 21 runs through lifting arm 2 along the length direction (example is fore-and-aft direction as shown in Figure 2) of lifting arm 2, on the diapire of lifting arm 2 rear ends, be formed with opening 22, opening 22 runs through the diapire of lifting arm 2 and relative up and down with davit 3, on the upper surface of davit 3, be formed with recessed groove downwards, the lower end of suspension rod 31 is fixed in groove to keep relative static with davit 3, the upper end of davit 3 is extended straight up and is extend in container cavity 21 from opening 22, on lifting arm 2, be formed with the second connecting hole, the second connecting hole runs through the rear end of lifting arm 2 along left and right directions, on suspension rod 31, be formed with the second mating holes running through along left and right directions, the second mating holes is relative with the second connecting hole and measure-alike, the first axle 62 is passed to the second connecting hole and the second mating holes along left and right directions, so that suspension rod 31 is connected on lifting arm 2 pivotly, suspension rod 31 is fixedly linked with davit 3 and is relative static, thereby davit 3 is connected on lifting arm 2 pivotly, because davit 3 is own freely sagging, and be not subject to the power in horizontal direction, so davit 3 only imposes on lifting arm 2 power (G as shown in Figure 6) straight down, thereby davit 3 only moves up and down to drive lifting arm 2 to swing around pivotal axis 61 in vertical plane.

Further, balanced controls are located at second end (example is front end as shown in Figure 1) of lifting arm 2, balanced controls and davit 3 lay respectively at the both sides of pivotal axis 61, and balanced structure is removable so that lifting arm 2 keeps balances between the second end of lifting arm 2 and pivotal axis 61.As shown in Figure 5, the front end of lifting arm 2 has extension (for example elevating lever 24) hereinafter described, extension extends forward along the length direction of lifting arm 2, extension is connected with balanced controls, balanced controls are configured to often to extension, apply pressure straight down, when the relative position of balanced controls and lifting arm 2 is fixedly time, be that the balanced controls application point of power that imposes on lifting arm 2 and the distance at pivotal axis 61 centers are while keeping definite value, balanced controls will impose on lifting arm 2 constant force straight down all the time, the moment that this masterpiece is used on lifting arm 2 can act on the equalising torque on lifting arm 2 with davit 3, thereby make lifting arm 2 in poised state.

Here, it should be noted that, the power that definition balanced controls impose on lifting arm 2 is the first power, the power that definition davit 3 imposes on lifting arm 2 is the second power, the direction of the first power and the second power all straight down, when the relative position of balanced controls and lifting arm 2 is fixed, and the relative position of davit 3 and lifting arm 2 is fixedly time, the first masterpiece is used in the ratio that acting force arm on lifting arm 2 and the second masterpiece be used in the acting force arm on lifting arm 2 and is always definite value, again because the first power and the second power are constant force, therefore, when the moment that the moment that imposes on lifting arm 2 when the first power and the second power impose on lifting arm 2 equates, lifting arm 2 will be always in poised state, and when as long as lifting arm 2 is not subject to other external force, lifting arm 2 all can be in poised state at any swash angle position place.

Further, the guiding mechanism position on lifting arm 2 that is connected with balanced controls with adjustment mechanism.As shown in Figure 5, on extension, be also provided with guiding mechanism, guiding mechanism is connected with balanced controls, regulate guiding mechanism can change the relative position of balanced controls and lifting arm 2, that is to say, regulate guiding mechanism can change the position of action point that balanced controls impose on the power of lifting arm 2, thereby can change the acting force arm of the first power, and then change the first power imposes on the moment of lifting arm 2, like this, when the size of the second power changes, the moment that the second power imposes on lifting arm 2 changes, thereby can be used in the arm of force on lifting arm 2 by regulating guiding mechanism to change the first masterpiece, and then change the first power imposes on the moment of lifting arm 2, so that lifting arm 2 can reach poised state again.

In one of them example of the present utility model, when hanging after armarium on davit 3, by regulating guiding mechanism so that lifting arm 2 in poised state, in the time of need to adjusting the position of armarium, pull as required armarium, so that armarium arrives ideal position, then discharge armarium, lifting arm 2 continues to keep balance, armarium can be hung reposefully on davit 3, in the time of need to changing armarium, again regulate guiding mechanism to make lifting arm 2 again in poised state.Thus, medical personnel can adjust to ideal position by armarium as required faster and more accurately, and in addition, because the weight limited range that tower crane 100 can carry is wide, thereby the scope of application of tower crane 100 is wide.

According to this utility model embodiment for indoor tower crane 100, by the mode of manual adjustments, can faster and more accurately the armarium of hanging on davit 3 be adjusted to ideal position, and expand 100 the weight domains of walker that can carry of tower crane by guiding mechanism is set, thereby increased the scope of application of tower crane 100, and without consuming electric energy, energy-conserving and environment-protective, in addition, compact conformation, the volume of tower crane 100 are little, work noiselessness.

In an embodiment of the present utility model, with reference to Fig. 3-Fig. 5, balanced controls comprise: at least one pair of air spring 41, two slide blocks and adjustable skids 431, alternatively, tower crane 100 also comprises: four guide posts 14, four guide posts 14 all vertically extend and each interval is turned up the soil is located in fixed frame, the two ends of each slide block be set in respectively in four guide posts 14 wherein on two.

Particularly, as shown in Figure 3 and Figure 5, first the perpendicular that defines pivotal axis 61 places is the first plane, defining the perpendicular vertical with the first plane is the second plane, like this, in fixed frame, be provided with four guide posts 14, the specification of four guide posts 14 is identical, and be arranged in symmetrically in fixed frame, particularly, the central point line of four guide posts 14 can form a rectangle, and two groups of opposite side of rectangle respectively with the first plane and the second plane parallel, each guide post 14 is round bar and extends along the vertical direction, the upper end of each guide post 14 all extends to top board 11 and is fixed on top board 11, the lower end of each guide post 14 all extends downward base plate 12 and is fixed on base plate 12, wherein on top board 11 and base plate 12, can be formed with respectively four for the hole of four guide posts 14 is installed, to facilitate, be fixedly connected with guide post 14.Thus, be close to two guide posts 14 in fixed frame left side and two guide posts 14 on contiguous fixed frame right side form respectively two upright slide rails that are parallel to the second plane.

Further, as Figure 2-Figure 5, the specification of two slide blocks is identical, each slide block is horizontally disposed cuboid, and the front and rear surfaces of each slide block all with the first plane parallel, left and right surface uniform the second plane parallel, on each slide block, be all formed with two perforation that run through along the vertical direction, perforation is for circle and be suitable for holding guide post 14, two perforation that are positioned on same slide block are corresponding with two guide post 14 positions that belong to same upright slide rail and mutually adaptive, thus, two slide blocks can be set in respectively on two corresponding upright slide rails, that is to say, two guide posts 14 that belong to same upright slide rail are vertically passed to two perforation in respective slide, like this, after two slide blocks and four guide posts 14 are seated respectively, two slide blocks can move up and down along corresponding guide post 14 respectively in the vertical plane that is parallel to the second plane, in addition, because each slide block is all by isolated two guide posts, 14 guiding in left and right, thereby limited slide block rotates and translation in horizontal plane, and then guarantee slide block only can with the second parallel plane perpendicular in upper and lower smooth sliding.

Certainly, this utility model is not limited to this, two line slide rails (scheming not shown) can also be set to substitute four guide posts 14 in fixed frame, particularly, two line slide rails all extend along the vertical direction, and be symmetrically arranged in fixed frame, the inner side of each line slide rail (i.e. a side at contiguous fixed frame center) is all formed with the slideway extending along the vertical direction, correspondingly, the outside of two slide blocks one side of fixed frame center (away from) is equipped with slide plate, slide plate is adapted to fit in slideway, so that two slide blocks can slide up and down along corresponding slideway.

Further, at least one pair of air spring 41 is located in fixed frame, and each slide block is connected with one of them in every pair of air spring 41 and drives removable on above-below direction by air spring 41.For example, in the example of Fig. 3, in fixed frame, be provided with a pair of air spring 41, a pair of air spring 41 comprises two air springs 41 that specification is identical, two air springs 41 are all scalable in vertical plane, and be symmetrically located in fixed frame, the upper end of each air spring 41 is steel cylinder end 411, steel cylinder end 411 can be hinged on top board 11 by bearing pin, the lower end of each air spring 41 is push rod end 412, and push rod end 412 can be hinged on corresponding slide block by bearing pin.Thus, two air springs 41 can drive respectively corresponding slide block to move up and down along corresponding upright slide rail.Here, it should be noted that, air spring 41 is in flexible or compression process, and the power that imposes on respective slide is almost definite value, and the air spring 41 of same size 41 imposes on the power equal and opposite in direction of respective slide.In addition, the structure of air spring 41 and fixed form etc. are well known to the skilled person, and no longer describe in detail here.Preferably, each air spring 41 is all between two guide posts 14 in respective slide, so that slide block is stressed evenly, motion is steady.

Certainly, this utility model is not limited to this, air spring 41 can also be two pairs, two pairs of air springs 41 comprise four air springs 41 that specification is identical, and the mounting means of the every pair of air spring 41 in two pairs of air springs 41 is all identical with the mounting means of above-mentioned a pair of air spring 41, each slide block is connected with two air springs 41 respectively like this, two air spring 41 front and back on same slide block are arranged at interval, because the required power being subject to of each slide block is certain, thereby by two air springs 41 are set on each slide block, stroke that can each air spring 41 of corresponding shortening, and then can reduce air spring 41 and the size of fixed frame in short transverse, make the overall structure of tower crane 100 smaller and more exquisite, compact.Certainly, according to the actual requirements, air spring 41 can also be multipair, and installation and the arrangement of the installation of multipair air spring 41 and arrangement and two pairs of air springs 41 are similar, no longer describes in detail here.

Further, adjustable skid 431 is located at second end (example is front end as shown in Figure 5) of lifting arm 2 movably, alternatively, the second end of lifting arm 2 is provided with two elevating levers 24 parallel to each other, two elevating levers 24 extend along the length direction of lifting arm 2, and adjustable skid 431 is set on two elevating levers 24.As shown in Figure 5, the extension of lifting arm 2 is two elevating levers 24, two elevating levers 24 are two identical circular pins, and be symmetrically fixed on lifting arm 2, wherein the rear end of each elevating lever 24 is all fixedly linked with the front end of lifting arm 2, front end all extends forward along the length direction of lifting arm 2, adjustable skid 431 is roughly rectangular slab, and arrange perpendicular to two elevating levers 24, on adjustable skid 431, be formed with two circular holes, two circular holes run through adjustable skid 431 along the direction perpendicular to adjustable skid 431, two circular holes are relative one by one with two elevating levers 24, thereby can be by two elevating levers 24 respectively through two circular holes, so that adjustable skid 431 is socketed on two elevating levers 24, like this, when adjustable skid 431 is subject to the external force along elevating lever 24 length directions, adjustable skid 431 can move forward and backward along two elevating levers 24.

Alternatively, tower crane 100 further comprises: 23, two sleeve pipe 23 each intervals of two sleeve pipes are turned up the soil and are located on adjustable skid 431 and are set in respectively on two elevating levers 24.Particularly, the shape of two sleeve pipes 23, size is all identical, wherein each sleeve pipe 23 all extends along the length direction of elevating lever 24, and length is greater than the length of adjustable skid 431 on fore-and-aft direction, each sleeve pipe 23 is suitable to be engaged between corresponding circular hole and elevating lever 24, thus, two sleeve pipes 23 are separately fixed in two circular holes, again the adjustable skid 431 that fixes sleeve pipe 23 is socketed on elevating lever 24, can increase like this contact area of adjustable skid 431 and elevating lever 24, adjustable skid 431 can be moved forward and backward along elevating lever 24 more reposefully.

Again further, with reference to Fig. 2 and Fig. 6, adjustable skid 431 is connected with two slide blocks respectively pivotly by two connecting rods equal in length.As shown in Figure 3 and Figure 5, two slide blocks are arranged in fixed frame one on the other, particularly, the slide block of the contiguous top board 11 of definition is the first slide block 421, the slide block of contiguous base plate 12 is the second slide block 422, the first slide block 421 is positioned at the upper left side of the second slide block 422, between the first slide block 421 and adjustable skid 431, by first connecting rod 441, be connected, between the second slide block 422 and adjustable skid 431, by second connecting rod 442, be connected, like this, the first slide block 421 can pass to adjustable skid 431 by the power F1 on it by first connecting rod 441, the second slide block 422 can pass to adjustable skid 431 by the power F2 on it by second connecting rod 442, because F1 equates with the value of F2, first connecting rod 441 is equal in length with second connecting rod 442, and first connecting rod 441 is tilted to front extension from top to bottom, second connecting rod 442 is tilted to front extension from bottom to top, thereby the horizontal component of making a concerted effort that F1 and F2 are applied on adjustable skid 431 is zero, vertical component is definite value.

Particularly, the middle part of adjustable skid 431 is provided with a fixed block 432, and fixed block 432 is connected with two slide blocks respectively pivotly by two connecting rods.With reference to Fig. 5, the rear side of adjustable skid 431 is provided with fixed block 432, fixed block 432 is roughly cuboid and is connected with the center of adjustable skid 431 rear surfaces, fixed block 432 extends back along the length direction of elevating lever 24, and guarantee that fixed block 432 and slide block are spaced apart from each other on fore-and-aft direction, the rear end of fixed block 432 is formed with rectangle mounting groove and the circular mounting hole communicating with each other, mounting groove runs through fixed block 432 along the vertical direction, installing hole runs through fixed block 432 along left and right directions, wherein mounting groove is positioned on the centrage of fixed block 432, so that fixed block 432 is symmetrical.

Further, first connecting rod 441 is all positioned at same and the second parallel plane plane with second connecting rod 442, and the upper end of first connecting rod 441 is connected by the first horizontal bearing pin with the inner surface (i.e. the one side at contiguous fixed frame center) of the first slide block 421, thereby first connecting rod 441 can pivotable by relative the first slide block 421 of the first horizontal bearing pin, the lower end of second connecting rod 442 is connected by the second horizontal bearing pin with the inner surface (i.e. the one side at contiguous fixed frame center) of the second slide block 422, thereby second connecting rod 442 can pivotable by relative the second slide block 422 of the second horizontal bearing pin, again further, the lower end of first connecting rod 441 is tilted to front lower place and extends, and stretch in mounting groove, the upper end of second connecting rod 442 is tilted to front upper place and extends, and stretch in mounting groove, the 3rd horizontal bearing pin penetrates from the installing hole in fixed block 432 1 sides (example is left side as shown in Figure 4), then successively through second connecting rod 442 and first connecting rod 441, from the installing hole of fixed block 432 opposite sides (example is right side as shown in Figure 4), pass again, thereby first connecting rod 441 can pivotable by the relative fixed block 432 of the 3rd bearing pin with second connecting rod 442.Thus, when adjustable skid 431 moves forward and backward on elevating lever 24, the first slide block 421 and the second slide block 422 are driven and can be moved up and down along corresponding upright slide rail by first connecting rod 441 and second connecting rod 442 respectively.

Certainly, this utility model is not limited to this, in another optional embodiment of this utility model, adjustable skid 431 has 432, two fixed blocks 432 of two fixed blocks of being spaced apart from each other respectively by two connecting rods and two slide blocks be connected pivotly (scheming not shown).For example, on the rear surface of adjustable skid 431, be connected with the first fixed block 432 and the second fixed block 432, the shape of the first fixed block 432 and the second fixed block 432, measure-alike and symmetrically spaced apart, first connecting rod 441 and second connecting rod 442 lay respectively in two planes parallel to each other of front and back, and the first fixed block 432 is positioned at same plane with first connecting rod 441, the second fixed block 432 is positioned at same plane with second connecting rod 442, now, the upper end of first connecting rod 441 is connected by the first horizontal bearing pin with the outer surface (away from the one side at fixed frame center) of the first slide block 421, the lower end of second connecting rod 442 is connected by the second horizontal bearing pin with the outer surface (away from the one side at fixed frame center) of the second slide block 422, the lower end of first connecting rod 441 is tilted to front lower place and extends, and be connected by the 3rd horizontal bearing pin with the first fixed block 432, the upper end of second connecting rod 442 is tilted to front upper place and extends, and be connected by the 4th horizontal bearing pin with the second fixed block 432, thereby when adjustable skid 431 moves forward and backward on elevating lever 24, the first slide block 421 and the second slide block 422 are driven and can be moved up and down along corresponding upright slide rail by first connecting rod 441 and second connecting rod 442 respectively, thus, the stressed of adjustable skid 431 can scatter equably, thereby motion more reposefully.

With reference to Fig. 5, guiding mechanism comprises: baffle plate 51, bolt 52 and nut 53, baffle plate 51 is located at second end (example is front end as shown in Figure 5) of lifting arm 2, and be positioned at the side (example is front side as shown in Figure 5) away from pivotal axis 61 of adjustable skid 431, bolt 52 is connected with adjustable skid 431 through baffle plate 51, nut 53 coordinates with bolt 52, and is located between baffle plate 51 and adjustable skid 431 so that bolt 52 is fixed on baffle plate 51.Particularly, the front side of adjustable skid 431 is provided with baffle plate 51, baffle plate 51 can be rectangular slab, and about fixed frame, be symmetrically fixed on the front end face of two elevating levers 24, the center of baffle plate 51 is formed with the manhole running through, correspondingly, on the front end face of adjustable skid 431, be formed with screwed hole, screwed hole is relative with through hole, nut 53 is placed on the rear end face of baffle plate 51, and bolt 52 is passed successively from front to back to through hole and nut 53 and is engaged in screwed hole, locking nut 53 so that baffle plate 51 be locked between the head and nut 53 of bolt 52, thereby the relative baffle plate 51 of bolt 52 and elevating lever 24 be nothing motion on fore-and-aft direction, adjustable skid 431 rotates relative to elevating lever 24 nothing in vertical plane, thereby swivel bolt 52 and nut 53 just can make adjustable skid 431 move forward and backward on lifting arm 2 simultaneously.

In use procedure, first on davit 3, connect armarium, then by swivel bolt 52, adjust the position of adjustable skid 431, make lifting arm 2 in poised state, then clamping screw 52 is fixed on baffle plate 51 it, bolt 52 no longer rotates, lifting arm 2 can maintain poised state always, and when changing or adjust armarium, swivel bolt 52 is readjusted the position of adjustable skid 431 again, make lifting arm 2 again in poised state, clamping screw 52 again.

Alternatively, with reference to Fig. 2, tower crane 100 further comprises: the gimbal lever 7, the gimbal lever 7 is located in lifting arm 2, the first end of the gimbal lever 7 (example is rear end as shown in Figure 2) is connected with suspension rod 31 pivotly by the second axle 63, the second end (example is front end as shown in Figure 2) is connected with fixed frame pivotly by the 3rd axle 64, the first axle 62 wherein, the second axle 63 is all parallel with pivotal axis 61 with the 3rd axle 64, the second axle 63 be positioned at the first axle 62 directly over, the 3rd axle 64 be positioned at pivotal axis 61 directly over, and the distance between the second axle 63 and the first axle 62 equals the distance between the 3rd axle 64 and pivotal axis 61.

As shown in Figures 2 and 3, the gimbal lever 7 is located in container cavity 21, and the gimbal lever 7 extends along the length direction of lifting arm 2, the rear end of the gimbal lever 7 is fixed with the first connecting portion, on the first connecting portion, be formed with the 3rd connecting hole running through, the 3rd connecting hole runs through the first connecting portion along left and right directions, correspondingly, the upper end of suspension rod 31 and the first connecting portion are spaced apart on left and right directions, the upper end of suspension rod 31 is formed with the 3rd mating holes running through along left and right directions, the 3rd mating holes is relative and measure-alike with the 3rd connecting hole, the second axle 63 is engaged in the 3rd connecting hole and the 3rd mating holes, so that the gimbal lever 7 can rotate around the second axle 63 relative to suspension rod 31, further, the rear side of fixed frame is fixed with crossbeam 16, the middle part of crossbeam 16 is fixed with engaging lug 17, on engaging lug 17, be formed with the 4th mating holes 171 running through, correspondingly, the front end of the gimbal lever 7 is fixed with the second connecting portion, the second connecting portion and engaging lug 17 are spaced apart on left and right directions, on the second connecting portion, be formed with the 4th connecting hole, the 4th connecting hole runs through the second connecting portion along left and right directions, the 4th connecting hole is relative and measure-alike with the 4th mating holes 171, the 3rd axle 64 is engaged in the 4th connecting hole and the 4th mating holes 171, so that the gimbal lever 7 can rotate around the 3rd axle 64 relative to fixed frame.

Further, pivotal axis 61 be positioned at the 3rd axle 64 under, the first axle 62 be positioned at the second axle 63 under, and pivotal axis 61 and the distance of the 3rd axle 64 on above-below direction equal the first axle 62 and the distance of the second axle 63 on above-below direction, thereby pivotal axis 61, the first axle 62, the subpoint line of the centrage of the second axle 63 and the 3rd axle 64 in the second plane forms parallelogram, because the centrage of pivotal axis 61 and the 3rd axle 64 subpoint in the second plane is positioned on same vertical curve, like this, when lifting arm 2 is when pivotal axis 61 swings, the subpoint of the centrage of the first axle 62 and the second axle 63 in second is also positioned on same vertical curve all the time, that is to say, when lifting arm 2 swings, suspension rod 31 can vertically arrange always, because suspension rod 31 is relative with davit 3 static, thereby davit 3 also vertically arranges always.Thus, when davit 3 is subject to after the external force of horizontal direction, fixed frame can be incited somebody to action dynamic balance in addition by the gimbal lever 7 and lifting arm 2 and be fallen, and davit 3 is kept vertically always, and then guarantee that the arm of force that davit 3 acts on lifting arm 2 can be relatively fixing.

In sum, with reference to Fig. 6, the operation principle of tower crane 100 can be summarized as follows: the adjusted mechanism of adjustable skid 431 is fixed on the one end at lifting arm 2, the first slide block 431 is connected with adjustable skid 431 with second connecting rod 442 by isometric first connecting rod 441 respectively with the second slide block 432, and the first slide block 431 and the second slide block 432 slide up and down in same the first plane along corresponding guide post 14, thereby when lifting arm 2 drives adjustable skid 431 to swing up and down, adjustable skid 431, the projection of the central point of the first slide block 431 and the second slide block 432 in the second plane forms isosceles triangle all the time, paired air spring 41 imposes on respectively the first slide block 421 and the second slide block 422 power F1 and F2 straight down, F1=F2, thereby the component of making a concerted effort in the horizontal direction that adjustable skid 431 is subject to is zero, component on vertical direction is definite value, power F1 and F2 that paired air spring 41 imposes on the first slide block 421 and the second slide block 422 in compression or drawing process are almost constant, and the distance between adjustable skid 432 and pivotal axis 61 is relatively little, what thereby adjustable skid 431 was subject in the horizontal direction makes a concerted effort to be always zero, the variation of making a concerted effort that in the vertical direction is subject to is less, and the first slide block 421 and the second slide block 422 produce less frictional force when corresponding guide post 14 slides up and down, the less change of making a concerted effort that this frictional force and adjustable skid 431 in the vertical directions are subject to offsets, thereby make adjustable skid 431 can be subject to all the time more constant vertical resultant force, and then adjustable skid 431 constant force straight down of one end that can always impose on lifting arm 2, correspondingly, the other end of lifting arm 2 is subject to the power G straight down that davit 3 applies, this power is definite value, and davit 3 is pivotally secured on lifting arm 2, like this, regulate guiding mechanism to change the position of adjustable skid 431 on lifting arm 2, make adjustable skid 431 and davit 3 act on the moment equal and opposite in direction on lifting arm 2, thereby lifting arm 2 can be always in poised state.

In the description of this description, the description of reference term " embodiment ", " some embodiment ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or feature can be with suitable mode combinations in any one or more embodiment or example.

Although illustrated and described embodiment of the present utility model, those having ordinary skill in the art will appreciate that: in the situation that not departing from principle of the present utility model and aim, can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present utility model is limited by claim and equivalent thereof.

Claims (10)

1. for an indoor tower crane, the described indoor ceiling that has, is characterized in that, described tower crane comprises:

Fixed frame, described fixed frame is suitable for being fixedly connected on described ceiling;

Lifting arm, described lifting arm is connected on described fixed frame so that described lifting arm is rotatable around described pivotal axis in perpendicular pivotly by pivotal axis;

Davit, described davit is connected to the first end of described lifting arm, and described davit vertically extends and drives removable on above-below direction by described lifting arm;

Balanced controls, described balanced controls are located at the second end of described lifting arm, described balanced controls and described davit lay respectively at the both sides of described pivotal axis, and described balanced structure is removable so that described lifting arm keeps balance between described second end of described lifting arm and described pivotal axis; And

Guiding mechanism, described guiding mechanism is connected to regulate the position of described balanced controls on described lifting arm with described balanced controls.

2. according to claim 1ly for indoor tower crane, it is characterized in that, described balanced controls comprise:

At least one pair of air spring, described at least one pair of, air spring is located in described fixed frame;

Two slide blocks, described in each, slide block is connected with one of them in air spring every pair described and drives removable on above-below direction by described air spring; And

Adjustable skid, described adjustable skid is connected with described two slide blocks respectively pivotly by two connecting rods equal in length, and described adjustable skid is located at described second end of described lifting arm movably.

3. according to claim 2ly for indoor tower crane, it is characterized in that, further comprise:

Four guide posts, described four guide posts all vertically extend and each interval is turned up the soil is located in described fixed frame, described in each the two ends of slide block be set in respectively in described four guide posts wherein on two.

4. according to claim 2ly for indoor tower crane, it is characterized in that, the middle part of described adjustable skid is provided with a fixed block, and described fixed block is connected with described two slide blocks respectively pivotly by described two connecting rods.

5. according to claim 2ly for indoor tower crane, it is characterized in that, described adjustable skid has two fixed blocks that are spaced apart from each other, and described two fixed blocks are connected with described two slide blocks pivotly by described two connecting rods respectively.

6. according to claim 2 for indoor tower crane, it is characterized in that, described second end of described lifting arm is provided with two elevating levers parallel to each other, and described two elevating levers extend along the length direction of described lifting arm, and described adjustable skid is set on described two elevating levers.

7. according to claim 6ly for indoor tower crane, it is characterized in that, further comprise:

Two sleeve pipes, described two sleeve pipe each intervals are turned up the soil and are located on described adjustable skid and are set in respectively on described two elevating levers.

According to described in any one in claim 2-7 for indoor tower crane, it is characterized in that, described guiding mechanism comprises:

Baffle plate, described baffle plate is located at described second end of described lifting arm and is positioned at the side away from described pivotal axis of described adjustable skid;

Bolt, described bolt is connected with described adjustable skid through described baffle plate; And

Nut, described nut coordinate with described bolt and be located between described baffle plate and described adjustable skid with will described in be bolted on described baffle plate.

9. according to claim 1ly for indoor tower crane, it is characterized in that, further comprise:

Suspension rod, described suspension rod is located in described davit and is connected to pivotly on described lifting arm by the first axle, and described suspension rod vertically extends;

The gimbal lever, the described gimbal lever is located in described lifting arm, the described first end of the described gimbal lever by the second axle be connected pivotly with described suspension rod, described the second end passes through the 3rd axle and is connected pivotly with described fixed frame,

Wherein said the first axle, described the second axle are all parallel with described pivotal axis with described the 3rd axle, described the second axle be positioned at described the first axle directly over, described the 3rd axle be positioned at described pivotal axis directly over, and the distance between described the second axle and described the first axle equals the distance between described the 3rd axle and described pivotal axis.

10. according to claim 1ly for indoor tower crane, it is characterized in that, described fixed frame comprises:

Top board;

Base plate, described base plate is parallel with described top board and be located at the below of described top board; And

At least one fixed bar, at least one fixed bar is located between described top board and described base plate.