CN221739723U - An improved tire gantry crane - Google Patents

Abstract

The utility model discloses an improved tire gantry crane, which comprises two main beams extending forwards and backwards, wherein a middle supporting beam is fixed between the front part and the rear part of the two main beams, two ends of the middle supporting beam are fixed at the inner side ends of the main beams, supporting legs are fixed on the bottom surfaces of the front end and the rear end of the main beam, the bottom ends of the two supporting legs of the front part are fixed on the top surface of the same lower cross beam, the bottom ends of the two supporting legs of the rear part are fixed on the top surface of the same lower cross beam, and windlass is fixed on the left part and the right part of the top surface of the lower cross beam; the top surface of the main beam is provided with a lifting trolley, and the lower parts of a left cross beam and a right cross beam of the lifting trolley are movably connected with a plurality of fixed pulleys through hinge shafts; the hoist engine of its lifting trolley is installed on the bottom end rail for the top surface of lifting trolley reduces, thereby reduces the height of whole hoist, and it realizes the horizontal rotation of lower supporting seat through installation gyration support and rotating electrical machines cooperation operation moreover.

Description

An improved tire gantry crane

Technical field:

The utility model relates to the technical field of cranes, and more specifically to an improved tire gantry crane.

Background technology:

A crane refers to a multi-action lifting machinery that can vertically lift and horizontally move heavy objects within a certain range.

The existing crane has a relatively simple running track because the trolley running mechanism and the trolley running mechanism run on a pre-laid track. The crane can only run along the track and cannot turn freely. The running range is also relatively small. Therefore, a tire-type crane is designed. The wheel hub and tire structure are used in the traveling trolley. At the same time, a slewing mechanism is set on the upper part to ensure that the traveling trolley can change the running line of the tire during the walking process, that is, change the horizontal rotation position of the tire to meet the transportation needs.

However, the slewing mechanism of the walking trolley in the existing tire crane is a direct drive achieved by fixing the output shaft of the slewing motor on the upper transverse beam at the top of the support frame on which the tire is installed. The tire support frame is a load-bearing member, and the weight above it is supported by the support frame and the tire thereon. The slewing motor drives the support frame to rotate, so that the shaft is subjected to great force and is easily damaged. The slewing motor requires a model with very large rotational torque, which is expensive.

Moreover, in the upper hoisting trolley of the existing tire crane, its winch and the like are all installed on the top surface of the hoisting trolley, which increases the height of the hoisting trolley and the height of the entire tire crane. It cannot be used in some height-restricted positions and has a limited range of use.

Utility model content:

The purpose of the utility model is to overcome the deficiencies of the prior art and to provide an improved tire gantry crane, in which the winch of the lifting trolley is installed on the lower cross beam, so that the top surface of the lifting trolley is lowered, thereby reducing the height of the entire crane, and the horizontal rotation of the lower support seat is achieved by installing a slewing support and a rotating motor for coordinated operation, and the slewing support improves the output torque, so that the rotating motor only needs to be a model with suitable rotating torque, and there is no need to rotate a motor with excessive torque, thereby reducing costs, and at the same time, the wheel hub is a mobile motor that transmits the transmission to the output shaft through a gear box to realize the rotation of the wheel hub, that is, the rotation of the tire, to ensure smooth operation.

The solution of the utility model to solve the technical problem is:

An improved tire gantry crane comprises two main beams extending forward and backward, an intermediate support beam is fixed between the front and rear parts of the two main beams, two ends of the intermediate support beam are fixed to the inner ends of the main beams, legs are fixed to the bottom surfaces of the front and rear ends of the main beams, the bottom ends of the two front legs are fixed to the top surface of the same lower cross beam, the bottom ends of the two rear legs are fixed to the top surface of the same lower cross beam, and winches are fixed to the left and right parts of the top surface of the lower cross beam;

A lifting trolley is provided on the top surface of the main beam, and the lower parts of the left and right cross beams of the lifting trolley are movably connected with a plurality of fixed pulleys through an articulated shaft;

The sling is located directly below the two main beams. Pulley seats are fixed on the left and right parts of the top surface of the sling. The corresponding movable pulleys are movably connected to the pulley seats through bearings. The wire rope of the winch is wound around the fixed pulley and movable pulley of the hoisting trolley on the corresponding side.

The left and right parts of the bottom surface of the lower cross beam are both fixed with a balancing seat, and the lower part of the balancing seat is installed with a balancing beam assembly;

The inner ring of the slewing support is fixed on the bottom plates at both ends of the equalizing beam assembly, and a lower support seat is provided below the bottom plates at both ends of the equalizing beam assembly. A gear box is installed at the lower part of the lower support seat, and the lower part of the gear box is movably connected with an output shaft through a bearing, and the front and rear ends of the output shaft extend out of the front and rear wall plates of the gear box, one end of the output shaft is fixed with a plurality of wheel hubs, and the other end of the output shaft is movably connected with a plurality of wheel hubs through a bearing, and tires are installed on the wheel hubs.

The outer ring of the slewing support is fixed on the top surface of the top plate of the lower support seat, and the rotating motor is fixed on the outer side walls of the left and right parts of the equalizing beam assembly. The output shaft of the rotating motor is fixed with a rotating gear, which meshes with the outer tooth portion of the outer ring.

A mobile motor is fixed on an outer wall surface of one side of the gear box, the output shaft of the mobile motor extends into the gear box and is fixed with a mobile driving gear, an intermediate shaft is fixed in the middle of the interior of the gear box, the middle of the intermediate shaft is movably connected with a transition gear through a bearing, the mobile driving gear is meshed with the transition gear, the middle of the output shaft is in the gear box and is fixed with a mobile transmission gear, and the mobile transmission gear is meshed with the transition gear.

An upper connecting frame is fixed on the upper part of the gear box, and the upper connecting frame is inserted into a middle through groove formed in the middle part of the bottom surface of the lower support seat. The upper connecting frame is movably connected to the lower support seat through a connecting shaft, and the top surface of the upper connecting frame is close to the bottom surface of the middle through groove.

The outstanding effects of the utility model are:

The winch of its lifting trolley is installed on the lower crossbeam, so that the top surface of the lifting trolley is lowered, thereby reducing the height of the entire crane. In addition, the lower support seat can be rotated horizontally by installing a slewing support and a rotating motor for coordinated operation. The slewing support increases the output torque, so that the rotating motor only needs to rotate a model with suitable torque, and there is no need to rotate a motor with excessive torque, thereby reducing costs. At the same time, the wheel hub is a mobile motor that transmits the power to the output shaft through a gearbox to realize the rotation of the wheel hub, that is, the rotation of the tire, to ensure smooth operation.

Description of the drawings:

Fig. 1 is a schematic diagram of a partial structure of the utility model;

Fig. 2 is a partial side view of the utility model;

FIG3 is a schematic diagram of the partial structure of the components below the balancing seat of the utility model;

FIG. 4 is a schematic diagram of a partial structure of FIG. 3 with a changed angle.

Specific implementation method:

Embodiment, as shown in Figures 1 to 4, an improved tire gantry crane comprises two main beams 100 extending forward and backward, an intermediate support beam 101 is fixed between the front and rear parts of the two main beams 100, both ends of the intermediate support beam 101 are fixed at the inner ends of the main beam 100, and the bottom surfaces of the front and rear ends of the main beam 100 are fixed with supporting legs 102, the bottom ends of the two supporting legs (102) at the front are fixed to the top surface of the same lower cross beam 103, and the bottom ends of the two supporting legs 102 at the rear are fixed to the top surface of the same lower cross beam 103;

A lifting trolley 200 is provided on the top surface of the main beam 100, and guide rails extending forward and backward are fixed to the top surface of the main beam 100, and the vehicle under the lifting trolley 200 is installed on the corresponding guide rails. In this embodiment, both main beams 100 are installed with lifting trolleys 200;

The lower parts of the left and right cross beams of the lifting trolley 200 are movably connected with a plurality of fixed pulleys 201 through hinged shafts. The sling 300 is located directly below the two main beams 100. The left and right parts of the top surface of the sling 300 are fixed with pulley seats 301, and the corresponding movable pulleys 309 are movably connected to the pulley seats 301 through bearings.

A winch 500 is fixed to the left and right parts of the top surface of the lower cross beam 103; the wire rope of the winch 500 is wound around the fixed pulley 201 and the movable pulley 309 of the lifting trolley 200 on the corresponding side;

The left and right parts of the bottom surface of the lower cross beam 103 are both fixed with a balancing seat 10, and the lower part of the balancing seat 10 is installed with a balancing beam assembly 11;

The steel wire of the hoist 500 is wound around all the fixed pulleys 201 and the movable pulley 202 thereunder, and the hoist 500 is installed on the lower crossbeam 103, so that the height of the lifting trolley 200 is lower, and the height of the entire crane is lower, thereby increasing the scope of application.

A balancing seat 10 is fixed to the left and right parts of the bottom surface of the lower cross beam 103, and a balancing beam assembly 11 is installed at the lower part of the balancing seat 10. The inner ring of the slewing support 20 is fixedly connected to the left and right bottom plates of the balancing beam assembly 11 by bolts. A lower support seat 30 is provided below the left and right bottom plates of the balancing beam assembly 11, and the top surface of the top plate of the lower support seat 30 is fixedly connected to the outer ring 21 of the slewing support 20 by bolts. A rotating motor 12 (which is a variable frequency motor) is fixed to the outer side walls of the left and right parts of the balancing beam assembly 11, and a rotating gear 13 is fixed to the output shaft of the rotating motor 12, and the rotating gear 13 is meshed with the outer tooth portion of the outer ring 21.

Furthermore, a gear box 40 is installed at the lower portion of the lower support seat 30, and an upper connecting frame 49 is fixed to the upper portion of the gear box 40. The upper connecting frame 49 is inserted into a middle through groove formed in the middle portion of the bottom surface of the lower support seat 30. The upper connecting frame 49 is movably connected to the lower support seat 30 through a connecting shaft, and the top surface of the upper connecting frame 49 is close to the bottom surface of the middle through groove. This structure enables relative slight rotation between the upper connecting frame 49 and the lower support seat 30 during operation to achieve balance correction during operation and ensure balanced operation.

The lower part of the gear box 40 is movably connected to an output shaft 41 through a bearing, and the front and rear ends of the output shaft 41 extend out of the front and rear wall plates of the gear box 40. One end of the output shaft 41 is fixed with multiple wheel hubs 42, and the other end of the output shaft 41 is movably connected to multiple wheel hubs 42 through a bearing, and tires 43 are installed on the wheel hubs 42.

Furthermore, a mobile motor 44 is fixed on the outer wall of one side of the gear box 40, the output shaft of the mobile motor 44 (which is a variable frequency motor) extends into the gear box 40 and is fixed with a mobile driving gear 45, an intermediate shaft 46 is fixed in the middle of the interior of the gear box 40, the middle part of the intermediate shaft 46 is movably connected with a transition gear 47 through a bearing, the mobile driving gear 45 is meshed with the transition gear 47, the middle part of the output shaft 41 is in the gear box 40 and is fixed with a mobile transmission gear 48, and the mobile transmission gear 48 is meshed with the transition gear 47.

Furthermore, one end of the output shaft 41 extending out of the outer wall of the gear box 40 is fixed with two side-by-side hubs 42, and the other end of the output shaft 41 passes through the outer wall of the inner wall panel of the gear box 40 and is movably connected to the two side-by-side hubs 42 through a bearing.

The sling 300 includes two corresponding fixed beams 302 extending left and right, and an intermediate support beam is provided at the left and rear parts between the two fixed beams 302, and the front and rear ends of the intermediate support beam are fixed on the inner sides of the two fixed beams 302;

The left and right ends of the fixed beam 302 are movably connected to support blocks 303 extending downward via hinge shafts, and the top surfaces of the lower beams 304 extending forward and backward are fixed to the bottom surfaces of the two support blocks 303 on the same side.

When this embodiment is in use, the outer ring 21 of the slewing support 20 can be rotated by operating the rotating motor 12, so that the lower support seat 30 rotates, thereby driving the wheel hub 42 and tire 43 below to rotate horizontally, changing the running direction to meet the running needs.

The operation is realized by moving the motor 44 and reducing speed through the gear box 40, so that the wheel hub 42 and the tire 43 rotate.

In this embodiment, one end of the output shaft 41 extending out of the outer wall surface of the outer side of the gear box 40 is fixed with two side-by-side hubs 42, and the other end of the output shaft 41 passes through the outer wall surface of the inner wall plate of the gear box 40 and is movably connected to the two side-by-side hubs 42 through bearings. This structure makes the outer hub 42 a driving wheel, and the inner hub 42 a driven wheel. This design makes the hub 42 and the tire 43 rotate horizontally. When changing the running direction, due to the different rotation running distances of the inner and outer hubs 42, when turning, that is, when rotating horizontally, the driving wheel can rotate faster and the driven wheel can rotate slower to ensure smooth turning.

This embodiment uses two lifting trolleys 200 to lift the lifting device 300, and the two lifting trolleys 200 are placed on two main beams 100, so that the balance during lifting is improved.

Claims (5)

1. The utility model provides an improved generation tire door crane, includes girder (100) that extend around two, is fixed with intermediate support beam (101) between the front portion and the rear portion between two girders (100), and the inboard end department at girder (100) is fixed at the both ends of intermediate support beam (101), and the bottom surface at both ends all is fixed with landing leg (102), its characterized in that around girder (100): the bottom ends of the two supporting legs (102) at the front part are fixed on the top surface of the same lower cross beam (103), the bottom ends of the two supporting legs (102) at the rear part are fixed on the top surface of the same lower cross beam (103), and windlass (500) is fixed at the left part and the right part of the top surface of the lower cross beam (103);

A lifting trolley (200) is arranged on the top surface of the main beam (100), and a plurality of fixed pulleys (201) are movably connected to the lower parts of a left cross beam and a right cross beam of the lifting trolley (200) through hinge shafts;

The lifting appliance (300) is positioned under the two main beams (100), the left part and the right part of the top surface of the lifting appliance (300) are respectively fixed with a pulley seat (301), the corresponding movable pulleys (309) are movably connected on the pulley seats (301) through bearings, and the steel wire ropes of the windlass (500) are wound on the fixed pulleys (201) and the movable pulleys (309) of the lifting trolley (200) at the corresponding side;

The left part and the right part of the bottom surface of the lower cross beam (103) are respectively fixed with an equalizing seat (10), and the lower part of the equalizing seat (10) is provided with an equalizing beam assembly (11);

The inner rings of rotary supports (20) are fixed on bottom plates at the left end and the right end of the equalizing beam assembly (11), a lower supporting seat (30) is arranged below the bottom plates at the left end and the right end of the equalizing beam assembly (11), a gear box (40) is installed at the lower part of the lower supporting seat (30), an output shaft (41) is movably connected to the lower part of the gear box (40) through a bearing, front and rear wall plates of the gear box (40) extend out of the front end and the rear end of the output shaft (41), a plurality of hubs (42) are fixed at one end of the output shaft (41), a plurality of hubs (42) are movably connected to the other end of the output shaft (41) through bearings, and tires (43) are installed on the hubs (42).

2. An improved tire gantry crane as set forth in claim 1 wherein: the top surface of the top plate of the lower supporting seat (30) is fixed with an outer ring (21) of the rotary support (20), rotary motors (12) are fixed on the outer side walls of the left part and the right part of the equalizing beam assembly (11), a rotary gear (13) is fixed on an output shaft of each rotary motor (12), and the rotary gear (13) is meshed with the outer tooth part of the outer ring (21).

3. An improved tire gantry crane as set forth in claim 1 wherein: a movable motor (44) is fixed on the outer wall surface of one side of the gear box (40), an output shaft of the movable motor (44) stretches into the gear box (40) and is fixedly provided with a movable driving gear (45), an intermediate shaft (46) is fixed in the middle of the inside of the gear box (40), a transition gear (47) is movably connected to the middle of the intermediate shaft (46) through a bearing, the movable driving gear (45) is meshed with the transition gear (47), the middle of the output shaft (41) is located in the gear box (40) and is fixedly provided with a movable transmission gear (48), and the movable transmission gear (48) is meshed with the transition gear (47).

4. An improved tire gantry crane as set forth in claim 1 wherein: one end of the output shaft (41) extending out of the outer wall surface of the gear box (40) is fixed with two side-by-side hubs (42), and the other end of the output shaft (41) is movably connected with the two side-by-side hubs (42) through the outer wall surface of the wall plate of the inner side of the gear box (40) and through a bearing.

5. An improved tire gantry crane as set forth in claim 1 wherein: the lifting appliance (300) comprises two corresponding left and right extending fixed beams (302), wherein a middle supporting beam is arranged at the left part and the rear part between the two fixed beams (302), and the front end and the rear end of the middle supporting beam are fixed on the inner sides of the two fixed beams (302);

The left end and the right end of the fixed beam (302) are respectively and movably connected with a supporting block (303) extending downwards through a hinge shaft, and the top surfaces of a lower beam (304) extending forwards and backwards are fixed on the bottom surfaces of the two supporting blocks (303) on the same side.