CN220078429U

CN220078429U - Novel portal crane with stable amplitude

Info

Publication number: CN220078429U
Application number: CN202322602501.4U
Authority: CN
Inventors: 刘翔; 黄进前; 武超; 李刚; 吴凡; 程锐
Original assignee: Henan Weihua Heavy Machinery Co Ltd
Current assignee: Henan Weihua Heavy Machinery Co Ltd
Priority date: 2023-09-25
Filing date: 2023-09-25
Publication date: 2023-11-24
Anticipated expiration: 2033-09-25

Abstract

The novel portal crane comprises a portal frame, a flat arm support and a lifting trolley, wherein the portal frame is rotationally connected with a turntable through a plane slewing support, a stand column is fixed in the middle of the upper disc surface of the turntable, and the inner end of the flat arm support is arranged on one side of the turntable; the top end of the upright post is fixedly connected with the other side of the turntable through an inclined strut, and is correspondingly connected with the outer end of the cantilever crane through a pull rod; the upper part of the lifting trolley is clamped at the lower part of the flat arm support and can axially move along the flat arm support, the upper disc surface of the rotary disc is provided with a belt wheel traction mechanism, a driving wheel is arranged at one side of the rotary disc, which is close to the lower end of the diagonal brace, a driven wheel is arranged at the outer end of the flat arm support, the upper surface of the lifting trolley is fixedly connected with the lower belt surface of the belt ring, and one side of the upper disc surface of the rotary disc, which is close to the inner end of the flat arm support, is provided with a tensioning mechanism which correspondingly tensions the belt ring; the novel portal crane can improve the stability of the amplitude changing process of the lifted heavy object.

Description

Novel portal crane with stable amplitude

Technical Field

The utility model relates to the field of crane equipment, in particular to a novel portal crane with stable amplitude variation.

Background

The portal crane mainly comprises lifting, rotating, luffing and running mechanisms, wherein the first three mechanisms are arranged on a rotating part, the operation is participated in each period, and the rotating part is also provided with a tilting single arm support or a combined arm support capable of pitching and a cab; as shown in a single-arm-frame portal crane disclosed in a chinese patent of publication No. CN101955131a, by adopting a compensation method, the suspended weight is ensured to move along a track close to a horizontal line in the amplitude-changing process, specifically, a special rope storage system is used for automatically winding and unwinding a corresponding lifting rope in the amplitude-changing process so as to compensate the vertical displacement of the lifting appliance caused by lifting of the arm frame, but the structural device for realizing the method is complex, and if the compensation cannot be kept accurately, the condition of unstable amplitude still occurs; therefore, the applicant combines tower crane equipment to develop and manufacture a novel portal crane with more stable amplitude.

Disclosure of Invention

In order to overcome the defects in the background art and solve the problems in the prior art, the utility model discloses a novel portal crane with stable amplitude, which can improve the stability of the amplitude process of a lifting weight.

In order to achieve the aim of the utility model, the utility model adopts the following technical scheme:

the novel portal crane with stable amplitude comprises a portal frame, a flat arm support and a lifting trolley for installing a lifting mechanism to lift heavy objects, wherein the upper surface of the portal frame is rotationally connected with a turntable through a plane slewing support, the middle part of the upper disc surface of the turntable is fixedly provided with a stand column, and the inner end of the flat arm support is arranged on one side of the turntable; the top end of the upright post is fixedly connected with the other side of the turntable through an inclined strut, and is correspondingly connected with the outer end of the flat arm support through a pull rod; the upper portion clamping of play to rise the dolly is in the lower part of plain rest and can follow plain rest axial displacement, the quotation is equipped with band pulley traction mechanism on the carousel, band pulley traction mechanism contains the band pulley, passes through the action wheel and follow the driving wheel of band pulley transmission connection to and drive action wheel pivoted driving motor, the action wheel is installed in carousel and is close to diagonal brace lower extreme one side, follow the driving wheel and install in plain rest outer end, the upper surface of play to rise the dolly and the lower part band fixed connection of band pulley, the take-up surface is installed and is corresponded the tensioning mechanism who makes the band pulley tensioning near plain rest inner one side on the carousel.

Further, straining device contains regulating plate, fixed plate and the wheel carrier of installation take-up pulley, the lower face of fixed plate is fixed in the carousel and goes up the quotation, the face four corners of going up of fixed plate is fixed with four pole setting, the face of regulating plate is equipped with the perforation that corresponds pole setting slip and wear to establish, the pole body cover that the pole setting is located between regulating plate and the fixed plate is equipped with compression spring, the top of pole setting is equipped with and is greater than fenestrate stopper, the bottom mounting of wheel carrier is in the regulating plate face to make take-up pulley and the lower part area of area circle correspond conflict.

Further, the pole setting pole body is equipped with the external screw thread, the lower extreme pole body spiro union of pole setting has the swivel nut, compression spring is located between regulating plate and the corresponding swivel nut.

Further, the infrared range finder of corresponding regulating plate is installed to face central authorities on the fixed plate, infrared range finder signal connection has the alarm.

Further, the belt rings are correspondingly connected with the lifting trolley through vertical telescopic loop bars.

Further, a cable drum is mounted on one side of the portal.

Further, a machine room is arranged on one side, away from the flat arm support, of the upper disc surface of the rotary disc.

Further, a cab is arranged on one side of the upper disc surface of the turntable, which is close to the flat arm support.

Further, the bottom of portal is equipped with running gear.

Due to the adoption of the technical scheme, the utility model has the following beneficial effects:

the novel portal crane with stable amplitude variation disclosed by the utility model has the advantages that the upright post and the cantilever crane are connected through the pull rod, so that the cantilever crane can be fixedly arranged on the turntable in a horizontal state, and the cantilever crane body can bear larger suspension weight, so that the belt wheel traction mechanism can be arranged to directly drive the lifting trolley to axially move along the cantilever crane, the amplitude variation action of a lifting object is realized, and the belt wheel traction mechanism is ensured to operate stably by the tensioning mechanism.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

FIG. 2 is a schematic side elevational view of FIG. 1;

fig. 3 is a schematic structural view of the tensioning mechanism.

In the figure: 1. a door frame; 2. a plane slewing support; 3. a turntable; 4. a diagonal brace; 5. a machine room; 6. a tensioning mechanism; 601. a fixing plate; 602. a vertical rod; 603. a limiting block; 604. a wheel carrier; 605. a tensioning wheel; 606. an adjusting plate; 607. a compression spring; 608. a screw sleeve; 7. a flat arm support; 8. a belt pulley traction mechanism; 801. a belt loop; 802. a driving wheel; 803. driven wheel; 9. lifting trolley; 10. a pull rod; 11. a column; 12. a cab; 13. an operating mechanism; 14. a cable drum; 15. an infrared range finder.

Detailed Description

In the description, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "left", "right", etc., the drawings merely correspond to the drawings of the present utility model, and in order to facilitate description of the present utility model, it is not indicated or implied that the device or element referred to must have a specific azimuth:

the novel portal crane with stable amplitude variation, which is described with reference to figures 1-3, comprises a portal frame 1, a flat cantilever crane 7 and a lifting trolley 9 for installing a lifting mechanism to lift heavy objects, wherein the bottom end of the portal frame 1 is provided with a running mechanism 13, the whole crane can be driven to move and position through the running mechanism 13, a cable drum 14 is installed on one side of the portal frame 1, the cable drum 14 can receive and release cables according to the use length so as to supply electricity for connection of the crane, the upper surface of the portal frame 1 is rotationally connected with a turntable 3 through a plane slewing support 2, a stand column 11 is fixed in the middle of the upper disc surface of the turntable 3, the inner end of the flat cantilever crane 7 is installed on one side of the turntable 3, and the flat cantilever crane 7 can be set into a truss structure to improve the structural strength; according to the requirement, a machine room 5 is arranged on one side of the upper disc surface of the turntable 3 far away from the flat arm support 7, and the machine room 5 is used for placing control machines, for example, a machine mechanism for controlling the rotation of the turntable 3 can be placed in the machine room 5, and the flat arm support 7 and the lifting weight can be balanced; in addition, a cab 12 is arranged on one side of the upper disc surface of the turntable 3, which is close to the flat arm support 7, so that a driver can observe and control the turntable conveniently;

the top end of the upright post 11 is fixedly connected with the other side of the turntable 3 through the diagonal brace 4, so that the strength of the upright post 11 is improved, the upright post 11 is prevented from being bent, the top end of the upright post 11 is correspondingly connected with the outer end of the cantilever crane 7 through a pull rod 10, and the pull rod 10 is generally a rigid pull rod, so that the cantilever crane 7 can be fixedly arranged on the turntable 3 in a horizontal state, and the cantilever crane body can bear larger suspension weight; the upper part of the lifting trolley 9 is clamped at the lower part of the cantilever crane 7 and can axially move along the cantilever crane 7, and the lifting trolley 9 is generally provided with roller clamping, so that friction is reduced, and the movement flexibility is improved; the upper disc surface of the turntable 3 is provided with a belt pulley traction mechanism 8, the belt pulley traction mechanism 8 comprises a belt pulley 801, a driving wheel 802 and a driven wheel 803 which are in transmission connection through the belt pulley 801, and a driving motor for driving the driving wheel 802 to rotate, the belt pulley 801 can be set to be a belt or a steel wire rope, the driving wheel 802 is arranged on one side of the turntable 3 close to the lower end of the diagonal brace 4, the driven wheel 803 is arranged at the outer end of the flat arm support 7, the upper surface of the lifting trolley 9 is fixedly connected with the lower belt surface of the belt pulley 801, and the lifting trolley 9 is directly driven by the belt pulley traction mechanism 8 to axially move along the flat arm support 7 so as to realize the amplitude variation action of a lifting object;

the tensioning mechanism 6 which is correspondingly used for tensioning the belt loop is arranged on one side, close to the inner end of the flat arm support 7, of the upper disc surface of the turntable 3, and the belt loop 801 of the belt pulley traction mechanism 8 can be always kept in a tensioning state by the tensioning mechanism 6, so that the belt pulley traction mechanism 8 runs stably; according to the requirement, the tensioning mechanism 6 comprises an adjusting plate 606, a fixing plate 601 and a wheel frame 604 provided with a tensioning wheel 605, the lower plate surface of the fixing plate 601 is fixed on the upper plate surface of the turntable 3, four upright rods 602 are fixed at four corners of the upper plate surface of the fixing plate 601, through holes corresponding to the upright rods 602 in a sliding penetrating mode are formed in the plate surface of the adjusting plate 606, a compression spring 607 is sleeved on a rod body of the upright rods 602 between the adjusting plate 606 and the fixing plate 601, a limiting block 603 larger than the through holes is arranged at the top end of the upright rods 602, the bottom end of the wheel frame 604 is fixed on the upper plate surface of the adjusting plate 606, so that the tensioning wheel 605 is in contact with the lower belt surface of the belt ring 801, when the belt pulley traction mechanism 8 is used for a long time, or the flat arm support 7 shakes when a hoisting heavy object, the belt ring 801 is possibly to be loosened due to small change in the distance between the driving wheel 802 and the driven wheel 803, and the belt ring 801 can be driven under the elastic force of the compression spring 607, and the adjusting plate 606 can drive the tensioning wheel 801 to be in a self-adapting contact with the belt ring 801 all the time, so that the tensioning of the belt ring 801 is ensured; in addition, the pole body of the pole 602 is provided with external threads, the lower pole body of the pole 602 is in threaded connection with a screw sleeve 608, a compression spring 607 is positioned between the adjusting plate 606 and the corresponding screw sleeve 608, the compression degree of the compression spring 607 is adjusted through the adjusting screw sleeve 608, and then the initial abutting force of the tensioning wheel 605 can be adjusted according to actual conditions;

according to the requirement, the infrared range finder 15 corresponding to the adjusting plate 606 is arranged in the center of the upper plate surface of the fixed plate 601, an alarm is connected with the infrared range finder 15 through a signal, and when the distance between the fixed plate 601 and the adjusting plate 606 is too large or too small, permanent deformation is possibly caused by structural damage of the belt pulley traction mechanism 8 or the flat arm support 7, and alarm maintenance is required; in addition, the belt ring 801 and the lifting trolley 9 are correspondingly connected through the vertical telescopic loop bar, so that the belt ring 801 and the lifting trolley 9 have flexible adjustment freedom degree in the vertical direction perpendicular to the flat arm support 7, and hard damage is avoided.

After the novel portal crane with stable amplitude is implemented, the lifting trolley 9 is used for lifting heavy objects, the driving wheel 802 can be controlled to rotate through the driving motor, and the lifting trolley 9 is driven by the belt ring 801 to move along the flat arm support 7 to perform amplitude variation, so that the amplitude variation structure is simpler, the amplitude variation mode is more stable, the maintenance and the precise control are facilitated.

The utility model has not been described in detail in the prior art, and it is apparent to those skilled in the art that the utility model is not limited to the details of the above-described exemplary embodiments, but that the utility model can be embodied in other specific forms without departing from the spirit or essential characteristics thereof; the above-described embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. The utility model provides a become stable novel portal crane of width of cloth, contains portal (1), flat arm support (7) and is used for installing hoisting mechanism to lift by crane dolly (9) of heavy object, the upper surface of portal (1) is connected with carousel (3) through plane gyration support (2) rotation, the last quotation middle part of carousel (3) is fixed with stand (11), the one side in carousel (3) is installed to the inner of Ping Beijia (7), characterized by: the top end of the upright post (11) is fixedly connected with the other side of the turntable (3) through an inclined strut (4), and the top end of the upright post (11) is correspondingly connected with the outer end of the flat arm support (7) through a pull rod (10); the upper portion clamping of play to rise dolly (9) is in Ping Beijia (7) lower part and can follow plain rest (7) axial displacement, the quotation is equipped with band pulley traction mechanism (8) on carousel (3), band pulley traction mechanism (8) include band pulley (801), through action wheel (802) and follow driving wheel (803) that band pulley (801) transmission is connected to and drive action wheel (802) pivoted driving motor, action wheel (802) are installed in carousel (3) and are close to diagonal brace (4) lower extreme one side, follow driving wheel (803) are installed in Ping Beijia (7) outer end, the upper surface of play to rise dolly (9) and the lower part area fixed connection of band pulley (801), the quotation is close to plain rest (7) inner one side and is installed tensioning mechanism (6) that make the band pulley tensioning correspondingly on carousel (3).

2. The luffing stabilized novel gantry crane of claim 1, characterized by: the tensioning mechanism (6) comprises an adjusting plate (606), a fixing plate (601) and a wheel frame (604) for installing a tensioning wheel (605), the lower plate surface of the fixing plate (601) is fixed on the upper plate surface of the rotary table (3), four vertical rods (602) are fixed at four corners of the upper plate surface of the fixing plate (601), the plate surface of the adjusting plate (606) is provided with holes corresponding to the vertical rods (602) in a sliding penetrating mode, rod bodies of the vertical rods (602) between the adjusting plate (606) and the fixing plate (601) are sleeved with compression springs (607), the top ends of the vertical rods (602) are provided with limiting blocks (603) larger than the holes, and the bottom ends of the wheel frames (604) are fixed on the upper plate surface of the adjusting plate (606) so that the tensioning wheel (605) is in corresponding interference with the lower belt surface of the belt ring (801).

3. The luffing stabilized novel gantry crane of claim 2, characterized by: the pole setting (602) shaft is equipped with the external screw thread, lower extreme pole body spiro union of pole setting (602) has swivel nut (608), compression spring (607) are located between regulating plate (606) and corresponding swivel nut (608).

4. The luffing stabilized novel gantry crane of claim 2, characterized by: an infrared range finder (15) corresponding to the adjusting plate (606) is arranged in the center of the upper plate surface of the fixing plate (601), and an alarm is connected with the infrared range finder (15) through signals.

5. The luffing stabilized novel gantry crane of claim 2, characterized by: the belt ring (801) and the lifting trolley (9) are correspondingly connected through a vertical telescopic sleeve rod.

6. The luffing stabilized novel gantry crane of claim 1, characterized by: a cable reel (14) is arranged on one side of the portal frame (1).

7. The luffing stabilized novel gantry crane of claim 1, characterized by: one side of the upper disc surface of the rotary disc (3) far away from the flat arm support (7) is provided with a machine room (5).

8. The luffing stabilized novel gantry crane of claim 1, characterized by: one side of the upper disc surface of the turntable (3) close to the flat arm support (7) is provided with a cab (12).

9. The luffing stabilized novel gantry crane of claim 1, characterized by: the bottom end of the portal frame (1) is provided with an operating mechanism (13).