CN213865117U - Lifting portal frame - Google Patents

Abstract

The utility model discloses an over-and-under type portal frame, the support element that sets up including front and back symmetry, the support element includes bracing piece and first crossbeam, the bracing piece is provided with two at least in the bottom of first crossbeam, be provided with two at least second crossbeams on two support element around, the bottom of each second crossbeam all is provided with two at least suspension connection spare along length direction equidistant, the corresponding position of each second crossbeam bottom all is provided with first slide bar, first slide bar is connected with the second crossbeam through suspension connection spare, first slide bar bottom is provided with two at least loose pulley assembly, the bottom of first slide bar is provided with two at least second slide bars, each second slide bar all is through loose pulley assembly and first sliding rod connection, the bottom of each second slide bar all is provided with electric block. Through the mode, the electric hoist can move freely in the plane coordinate range, and is convenient and quick; the two electric hoists are arranged, so that objects are kept balanced and do not topple over when being hoisted, and the electric hoist is safe and reliable.

Description

Lifting portal frame

Technical Field

The utility model relates to a hoisting equipment technical field, concretely relates to over-and-under type portal frame.

Background

The portal frame is a novel small-sized hoisting portal frame developed according to the requirements of carrying equipment, warehouse in and out goods, hoisting and maintaining heavy equipment and material transportation in daily production of medium and small factories (companies). The method is suitable for manufacturing moulds, automobile repair factories, mines, civil engineering construction sites and occasions needing lifting. The lifting machine is commonly used for material transportation and up-and-down use of constructors in building construction, and achieves lifting mechanization. The manpower can be reduced, the production and operation cost can be reduced, and the working efficiency can be improved.

When the existing gantry frame is used for lifting a foolproof object, an electric hoist can only move left and right but not move front and back, when a lifting point is not right below the electric hoist and needs to move front and back, the whole gantry frame needs to move front and back and then the electric hoist can move along with the gantry frame, so that the gantry frame is troublesome to use; the portal frame is provided with the electric hoist only, the electric hoist can only be lifted by a single point when lifting objects, the objects with irregular shapes or smooth surfaces are bound and lifted by the portal frame because the gravity center position is not found well, the objects are lifted by the portal frame and fall off, and even the phenomenon of falling from the binding belt is caused, so that the production safety is seriously influenced, and the objects fall to damage the objects and cause economic loss.

SUMMERY OF THE UTILITY MODEL

In order to overcome the technical defect, the utility model provides a lifting portal frame to solve the technical problem who mentions among the above-mentioned background art.

In order to solve the above problem, the utility model discloses realize according to following technical scheme:

a lifting portal frame, the support element that sets up including front and back symmetry, the support element includes bracing piece and first crossbeam, the bracing piece is provided with two at least in the bottom of first crossbeam, two around be provided with two at least second crossbeams, each on the support element the bottom of second crossbeam all is provided with two at least suspension connection spare, each along length direction equidistant the corresponding position of second crossbeam bottom all is provided with first slide bar, first slide bar is connected with the second crossbeam through suspension connection spare, first slide bar bottom is provided with two at least loose pulley assembly, the bottom of first slide bar is provided with two at least second slide bars, each the second slide bar all is connected with first slide bar through loose pulley assembly, each the bottom of second slide bar all is provided with electric block.

As a further improvement of the scheme, an L-shaped connecting piece is arranged between the supporting rod and the first cross beam, and the first cross beam is detachably connected to the supporting rod through the L-shaped connecting piece.

As a further improvement of the scheme, the first cross beam is fixedly connected to the L-shaped connecting piece, and the L-shaped connecting piece is detachably connected to the top of the supporting rod through a screw.

As a further improvement of the scheme, the cross sections of the first cross beam and the second cross beam are both I-shaped.

As a further improvement of the scheme, the inside of the supporting rod is hollow.

As a further improvement of the scheme, the second cross beam is detachably connected to the top of the first cross beam through a screw.

As a further improvement of the present solution, the support bar is perpendicular to the first beam.

As a further refinement of the present solution, the first slide bar is perpendicular to the second slide bar.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a set up first crossbeam on the support element, the second crossbeam forms holistic atress support, and connect gradually first slide bar and second slide bar below the second crossbeam, first slide bar is through setting up hanging connecting piece and second crossbeam fixed connection, the second slide bar realizes the back-and-forth movement on first slide bar through setting up loose pulley assembly, and the electric block that the bottom of second slide bar set up can move about on it again, can realize the removal of electric block arbitrary scope on the plane coordinate, need not to remove whole portal frame and can make electric block carry out the back-and-forth movement, it is simple and fast; and two electric hoists are arranged, so that articles can be hoisted at two points, the articles are kept balanced during hoisting, the phenomenon of falling due to toppling is avoided, and the operation is safer and more reliable.

Drawings

The following detailed description of embodiments of the invention is provided with reference to the accompanying drawings, in which:

fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is an enlarged view of a portion of FIG. 1 at B;

FIG. 4 is a schematic structural view of a suspension link according to the present invention;

FIG. 5 is an exploded view of a suspension link according to the present invention;

in the figure: 1. a support unit; 11. a support bar; 12. a first cross member; 13. an L-shaped connector; 2. a second cross member; 3. a suspension connection; 31. a middle screw; 311. positioning holes; 32. an upper engaging component; 321. a fixed seat; 322. an upper screw rod sleeve; 323. an upper movable pressing piece; 324. cushion blocks; 325. sinking the notch; 326. a first through hole; 327. a first chute; 33. a lower engaging component; 331. a lower screw rod sleeve; 332. a lower movable hold-down member; 333. a second chute; 334. a second through hole; 34. a U-shaped groove; 35. a drop-off prevention member; 4. a first slide bar; 5. a sheave assembly; 6. a second slide bar; 7. an electric hoist.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

As shown in fig. 1-5, the utility model relates to a lifting portal frame,

regarding the gantry:

as shown in fig. 1-3, the portal frame includes support units 1 symmetrically arranged in front and back, a preset distance is kept between the two support units, the distance between the support units 1 can be set according to actual working conditions, and the larger the distance between the two support units 1 is, the larger the range within which the electric hoist 7 can move back and forth is.

The supporting unit 1 comprises a supporting rod 11 and a first beam 12, wherein the supporting rod 11 is provided with two pieces at the bottom of the first beam 12, the two supporting rods 11 are respectively arranged at the left end and the right end of the first beam 12, the supporting rods 11 are fixedly arranged perpendicular to the ground and perpendicular to the first beam 12, and therefore the first beam 12 is parallel to the ground. The bracing piece 11 is rectangular long strip form, and its inside is cavity, because the length of bracing piece 11 is great, under the circumstances of guaranteeing the atress intensity, but 11 inside sets up to cavity save material for the bracing piece, reduces manufacturing cost, and is concrete, and the bracing piece 11 chooses for use hollow square steel to make, and hollow square steel is the standardized steel of mass production, can directly purchase the hollow square steel of corresponding specification from other producers according to the production demand and can directly cut the use. The upper end and the lower end of the supporting rod 11 are supporting points, and the upper end and the lower end of the supporting rod 11 are provided with frustum-shaped structures which can be used for expanding a supporting surface and dispersing stress, so that stress is not concentrated too much, and the position of the supporting point is protected from being deformed easily.

Because of the width of first crossbeam 12 is less than bracing piece 11 top width, be difficult to carry out detachable connection between the two, it is unfavorable for subsequent dismantlement again directly to fix both through welding process, so be provided with L shape connecting piece 13 between bracing piece 11 and first crossbeam 12, L shape connecting piece 13 uses the same rectangle board of thickness and trapezoidal board mutually perpendicular welding to form, first crossbeam 12 passes through welded technology fixed connection in the inboard of L shape connecting piece 13, L shape connecting piece 13 bottom can dismantle through the screw and connect in bracing piece 11 top, when first crossbeam 12 is dismantled to needs, directly dismantle the screw that L shape connecting piece 13 and bracing piece 11 are connected can be torn down first crossbeam 12 together with L shape connecting piece 13 from bracing piece 11.

Two second cross beams 2 are arranged on the front supporting unit 1 and the rear supporting unit 1, and the second cross beams 2 are detachably connected to the top of the first cross beam 12 through screws. The two second cross beams 2 are mutually symmetrical left and right and keep a preset distance, the first cross beams 12 on the front supporting unit 1 and the rear supporting unit 1 respectively support the front end and the rear end of each second cross beam 2, the cross sections of the first cross beams 12 and the second cross beams 2 are I-shaped, specifically, the first cross beams 12 and the second cross beams 2 are made of I-shaped steel, the I-shaped steel is standard section steel produced in batch, the source is wide, the I-shaped steel can be directly purchased and used from other manufacturers, and the method is convenient and quick, and the I-shaped steel has the characteristics of high strength, light weight, strong impact resistance, good low chemical property and the like, so the I-shaped steel is very suitable for being used as a cross beam and can bear large stress in the vertical direction without deformation. In the present embodiment, the first beam 12 and the second beam 2 are equal in length.

The bottom of each second crossbeam 2 all is provided with four suspension connection pieces 3 along length direction equidistant, the corresponding position of each second crossbeam 2 bottom all is provided with first slide bar 4, the spread groove has been seted up to the top position of first slide bar 4, first slide bar 4 is connected with second crossbeam 2 through suspension connection piece 3, suspension connection piece 3 is middle biography power piece, can transmit the load on first slide bar 4 to second crossbeam 2 on, suspension connection piece 3 is last to use the material of high strength to make, in order to guarantee the atress.

The bottom of the first sliding rod 4 is provided with a sliding groove, two pulley assemblies 5 are arranged in the sliding groove in a sliding mode, the pulley assemblies 5 can freely slide in the sliding groove back and forth to indirectly control the back and forth positions of the electric hoist 7, and it is understood that the pulley assemblies 5 can be realized by utilizing the prior art conditions, and the working principle of the pulley assemblies is not repeated. The bottom of the first slide bar 4 is provided with two second slide bars 6, and the first slide bar 4 is perpendicular to the second slide bars 6. The structure of the second slide bar 6 is the same as that of the first slide bar 4, each second slide bar 6 is connected with the first slide bar 4 through a pulley assembly 5, the bottom end of the pulley assembly 5 is meshed with the connecting groove of the second slide bar 6, the two pulley assemblies 5 positioned on the same side on the left first slide bar 4 and the right first slide bar 4 are used for being connected with the left end and the right end of the second slide bar 6, and the two second slide bars 6 can slide back and forth on the first slide bar 4 along with the pulley assemblies 5 to adjust the front and back positions of the electric hoist 7.

An electric hoist 7 is arranged in the sliding groove in the bottom of the second sliding rod 6 in a sliding mode, a sliding motor is arranged on the electric hoist 7, and the whole electric hoist 7 can be driven to slide left and right in the sliding groove of the second sliding rod 6 to adjust the left position and the right position of the electric hoist 7. It is understood that the electric block 7 can be implemented using prior art conditions and therefore its working principle will not be described in detail.

With respect to the suspension connection 3:

as shown in fig. 3-5, the hitch coupler 3 includes a central threaded rod 31, an upper bite assembly 32, and a lower bite assembly 33. The middle screw rod 31 is provided with an upper external thread and a lower external thread with the same length, and the specifications of the external threads are consistent. When the portal frame is installed, the upper engaging component 32 is used for engaging the second cross beam 2, the lower engaging component 33 is used for engaging the first slide bar 4, and the distance between the upper engaging component 32 and the first slide bar 4 can be adjusted by rotating the lower engaging component 33 or the upper engaging component 32 before installation, so that the effect of adjusting the distance between the second cross beam 2 and the first slide bar 4 is achieved.

The upper engagement assembly 32 comprises a fixed seat 321, an upper screw rod sleeve 322, an upper movable pressing piece 323 and a cushion block 324, wherein the section of the fixed seat 321 is in a notch shape and is formed by bending a steel plate in actual processing; the upper screw rod sleeve 322 is movably arranged in the middle of the fixed seat 321 and is in threaded connection with the middle screw rod 31, the top of the upper screw rod is of a rectangular block structure, a cylindrical structure provided with an internal thread matched with the external thread on the middle screw rod 31 is arranged below the rectangular block structure, and the bottom end of the upper screw rod sleeve 322 penetrates through the bottom wall of the inner side of the fixed seat 321 to abut against the bottom wall of the inner side of the fixed seat 321 through the rectangular block structure on the upper screw rod sleeve 322 during assembly, so that the upper screw rod sleeve 322 is limited to continuously separate from the fixed seat 321 downwards; the upper movable pressing part 323 is symmetrically arranged at the left and right of the top of the fixed seat 321 and used for tightly biting two ends of the second cross beam 2, the upper movable pressing part 323 is a shell part with a hollow bottom, the wall thickness is uniform, one end of the upper movable pressing part 323, which is far away from the upper screw rod sleeve 322, is provided with a limiting structure which is abutted against the inner side wall of the fixed seat 321 in a downward protruding mode, and when the bottom of the upper movable pressing part 323 is abutted against the top of the fixed seat 321, the upper movable pressing part 323 can only slide in the length direction of the fixed seat 321; the cushion block 324 is arranged at the bottom of the fixed seat 321 corresponding to each movable pressing part, is rectangular and flat, the top surface of the cushion block is attached to the bottom surface of the fixed seat 321, and when the upper movable pressing part 323 is fixed by using a screw and a nut, the cushion block 324 arranged between the nut and the fixed seat 321 can increase the contact area between the nut and the fixed seat 321, so that the fixed seat 321 is protected from being damaged due to stress concentration; the top of the upper movable clamping member 323 is recessed with a sinking groove 325, the sinking groove 325 can make the screw head sink into the sinking groove 325 without exposing to the top surface of the upper movable clamping member 323 when passing through the screw, the bottom wall of the sinking groove 325 is penetrated with a first through hole 326 for the screw to pass through, the fixing base 321 is provided with a first sliding groove 327 for the screw to slide, when installing, the first through hole 326 of the two upper movable clamping members 323 is penetrated through the screw, the screw is penetrated through the first sliding groove 327 and the cushion block 324 and extended to the outside of the bottom of the fixing base 321, then the two upper movable clamping members 323 are respectively slid to the appropriate fixing position in the second beam 2, two fixing nuts are respectively screwed into the bottom end of the screw on each upper movable clamping member 323 to abut against the cushion block 324 for fixing the position of the upper movable clamping member 323, the principle of using the two fixing nuts to clamp the two fixing nuts is that after the two fixing nuts are tightened, the axial force generated between the fixed nuts increases the friction between the fixed nut teeth and the bolt teeth to prevent the fixed nuts from loosening automatically.

The lower engaging member 33 includes a lower screw housing 331 threadedly coupled to the middle screw 31 and two lower movable pressing members 332 symmetrically installed on the lower screw housing 331. The lower screw sleeve 331 is T-shaped, the bottom of the lower screw sleeve 331 is a rectangular flat structure, a cylindrical structure with internal threads matched with the external threads on the middle screw 31 is arranged above the rectangular flat structure, the appearance of the cylindrical structure is similar to that of the upper screw sleeve 322, the difference is that two lower movable pressing pieces 332 are slidably arranged on the rectangular flat structure at the bottom of the lower screw sleeve 331, second sliding grooves 333 for the lower movable pressing pieces 332 to slide are symmetrically arranged at the left and right of the rectangular flat structure on the lower screw sleeve 331, an integrated block structure is convexly arranged on the lower movable pressing pieces 332 to ensure that the lower movable pressing pieces 332 horizontally slide in the second sliding grooves 333, and two second through holes 334 which are positioned at the same height and are used for screws to pass through are penetrated through the side wall of the lower movable pressing pieces 332. When the device is installed, the left lower movable pressing piece 332 and the right lower movable pressing piece 332 are simultaneously slid to the connecting notch at the top of the first sliding rod 4 and are abutted against the connecting notch, the screw penetrates through the left lower movable pressing piece 332 and the right lower movable pressing piece 332 simultaneously, the screw head is abutted against the side wall of one of the lower movable pressing pieces 332, and one end of the screw, far away from the screw head, penetrates through the other lower movable pressing piece 332, penetrates through the gasket and is screwed into the two fixing nuts for fastening.

The screw section of the middle screw 31 is vertically and symmetrically provided with positioning holes 311, the upper screw sleeve 322 and the lower screw sleeve 331 are provided with U-shaped grooves 34 corresponding to the positioning holes 311, and the positioning holes 311 are provided with anti-dropping parts 35 in an inserting manner. The anti-dropping part 35 passes through the U-shaped groove 34 and the positioning hole 311, and because the upper screw sleeve 322 or the lower screw sleeve 331 needs to rotate when moving on the screw along the axial direction, the anti-dropping part 35 can prevent the upper screw sleeve 322 or the lower screw sleeve 331 from rotating and further preventing the upper screw sleeve 322 or the lower screw sleeve 331 from moving up and down on the screw, and the moving range of the upper screw sleeve 322 and the lower screw sleeve 331 on the middle screw 31 is closely related to the length of the U-shaped groove 34.

In conclusion, when the electric hoist 7 hoists an article, the electric hoist 7 can move randomly within a plane coordinate range, so that the electric hoist 7 can move back and forth without moving the whole portal frame, and the operation is simple and rapid; two electric hoists 7 are arranged, so that articles can be hoisted at two points, the articles are balanced during hoisting, the phenomenon of toppling is avoided, and the operation is safer and more reliable; the suspension connecting piece 3 can be used for quickly and tightly connecting the second cross beam 2 and the first sliding rod 4, the distance between the second cross beam and the first sliding rod can be conveniently adjusted, and the mounting efficiency is greatly improved.

Other structures of the pulley assembly 5 and the electric hoist 7 described in the present embodiment are referred to in the prior art.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any modification, equivalent change and modification made by the technical spirit of the present invention to the above embodiments do not depart from the technical solution of the present invention, and still fall within the scope of the technical solution of the present invention.

Claims (8)

1. The utility model provides a over-and-under type portal frame which characterized in that: the supporting unit that sets up including the front and back symmetry, the supporting unit includes bracing piece and first crossbeam, the bracing piece is provided with two at least, two around in the bottom of first crossbeam be provided with two at least second crossbeams on the supporting unit, each the bottom of second crossbeam all is provided with two at least suspension connection spare, each along length direction equidistant the corresponding position of second crossbeam bottom all is provided with first slide bar, first slide bar is connected with the second crossbeam through suspension connection spare, first slide bar bottom is provided with two at least loose pulley assembly, the bottom of first slide bar is provided with two at least second slide bars, each the second slide bar all is connected with first slide bar through loose pulley assembly, each the bottom of second slide bar all is provided with electric block.

2. The elevating gantry of claim 1, wherein: an L-shaped connecting piece is arranged between the supporting rod and the first cross beam, and the first cross beam is detachably connected to the supporting rod through the L-shaped connecting piece.

3. The elevating gantry of claim 2, wherein: the first cross beam is fixedly connected to the L-shaped connecting piece, and the L-shaped connecting piece is detachably connected to the top of the supporting rod through a screw.

4. The elevating gantry of claim 1, wherein: the cross sections of the first cross beam and the second cross beam are both I-shaped.

5. The elevating gantry of claim 1, wherein: the inside of the supporting rod is hollow.

6. The elevating gantry of claim 1, wherein: the second cross beam is detachably connected to the top of the first cross beam through screws.

7. The elevating gantry of claim 1, wherein: the support rod is perpendicular to the first cross beam.

8. The elevating gantry of claim 1, wherein: the first slide bar is perpendicular to the second slide bar.

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