CN107601268B

CN107601268B - Portal crane

Info

Publication number: CN107601268B
Application number: CN201710915729.5A
Authority: CN
Inventors: 刘继英; 于宁
Original assignee: Suzhou Dafang Special Vehicle Co Ltd
Current assignee: Suzhou Dafang Special Vehicle Co Ltd
Priority date: 2017-09-30
Filing date: 2017-09-30
Publication date: 2024-01-05
Anticipated expiration: 2037-09-30
Also published as: CN107601268A

Abstract

The invention relates to a portal crane, which comprises a crane main body and a moving mechanism arranged at the bottom of the crane main body, wherein the crane main body comprises a pair of bases, a lifting mechanism arranged on the bases, a cross beam connected between the tops of the pair of lifting mechanisms and a slidable lifting tool arranged on the cross beam in a movable manner, the slidable lifting tool comprises a driving lifting tool, a driven lifting tool connected with the driving lifting tool and a power component used for driving the driving lifting tool to slide, the driving lifting tool comprises a fixed frame, a lifting plate component connected with the fixed frame and a rolling component connected with the bottom of the fixed frame, the rolling component is arranged above the cross beam, and the power component is positioned below the cross beam. The invention realizes the displacement and adjustment of the lifting appliance on the cross beam, increases the sliding distance, ensures that the sliding is more portable and flexible, and does not need maintenance; the moving mechanism can adopt a module car or a guide rail to select flexibly and variously.

Description

Portal crane

Technical Field

The invention relates to a hoisting machine applied to the fields of construction, power manufacturing, large-piece installation, transportation and the like, in particular to a portal crane.

Background

The lifting appliance arranged on the gantry crane in the market at present is usually fixed, and when a heavy object needs to be lifted: the gantry crane moves through the track to enable the lifting appliance to align with the heavy object to finish lifting, but because the track is relatively fixed, once the heavy object cannot be aligned through moving on the track, lifting difficulty is caused. So that movable spreaders are emerging on the market. In order to realize the movement, a similar lifting appliance in the existing market generally adopts static friction, namely, a low-friction group material is used for realizing the movement of the lifting appliance relative to a track. The power for the hanger sliding is usually pulled by a hoisting steel wire rope, and the pulling and sliding by the hoisting steel wire rope have the defects of complex structure, frequent maintenance of the steel wire rope and the like; even if the oil cylinder is adopted for pushing and pulling, the oil cylinder is arranged above the gantry crane beam, and the length of the oil cylinder is limited due to the limitation of the space, so that the sliding stroke of the oil cylinder is very short, and the sliding distance is very short.

In addition, the gantry crane (gantry crane) in the current market has a wheel rail type and a tire type, but the gantry crane can not only use a module car as a chassis according to the requirement, but also walk on a special guide rail according to the requirement, and realize the lifting function through the lifting of an oil cylinder.

Disclosure of Invention

The invention aims to provide a portal crane which can be applied to lifting, jacking, site transportation and large piece assembly of building installation, bridge construction, maritime work, electric power, power manufacturing, ports, wharfs, maritime work and the like.

In order to achieve the above purpose, the invention adopts the following technical scheme:

the utility model provides a gantry crane, includes the hoist main part, sets up the mobile mechanism of hoist main part bottom, the hoist main part include a pair of base, set up the lifting mechanism on the base, connect a pair of the crossbeam between the lifting mechanism top and can remove the setting be in the crossbeam on the hoist that can slide, but the hoist that slides include initiative hoist, with initiative hoist be connected driven hoist, be used for driving initiative hoist carry out the power component that slides, initiative hoist include the mount, connect hanger plate subassembly on the mount, connect the rolling element of mount bottom, the rolling element set up the top of crossbeam, power component be located the below of crossbeam.

Preferably, the base is provided with a first connecting part and a second connecting part; the bottom of the base is provided with a guide groove.

Further preferably, the moving mechanism includes a module car, and the base is fixed to the module car through the first connecting portion.

Further preferably, the moving mechanism comprises a rail and a walking oil cylinder, a guide bar is arranged on the upper plane of the rail, and a guide groove at the bottom of the base is matched with the guide bar; the cylinder sleeve of the walking cylinder is connected to the track, and the piston rod end of the walking cylinder is connected to the second connecting part.

Preferably, the crane main body further comprises an electric control mechanism, and the electric control mechanism comprises an electric control box and a power station which are arranged on the base.

Preferably, the power component comprises a sliding oil cylinder, a cylinder sleeve of the sliding oil cylinder is fixed at the bottom of the cross beam, and a piston rod end of the sliding oil cylinder is connected to the active lifting appliance.

Further preferably, a sliding oil cylinder fixing seat is arranged at the bottom of the cross beam, and a cylinder sleeve of the sliding oil cylinder is fixed on the sliding oil cylinder fixing seat.

Preferably, the hanger plate assembly is provided with two groups, the two groups of hanger plate assemblies are respectively connected to two opposite sides of the fixing frame, each group of hanger plate assemblies comprises a first hanger plate connected to the fixing frame, a second hanger plate connected to the lower end of the first hanger plate and a connecting shaft connected between the pair of first hanger plates, a hoisting part is formed at the lower end of the second hanger plate, and the power component is connected with the connecting shaft.

Further preferably, a shaft sleeve is sleeved outside the connecting shaft.

Preferably, the active lifting appliance further comprises an anti-tilting assembly connected to the bottom of the fixing frame and used for preventing the active lifting appliance from tilting, the anti-tilting assembly comprises a pair of L-shaped bending pieces, the bending directions of the pair of L-shaped bending pieces are opposite, and the pair of L-shaped bending pieces are located on two sides of the rolling assembly.

Further preferably, the upper part of the cross beam is provided with convex edges protruding to two sides, and the convex edges are covered by the bending of the pair of L-shaped bending pieces.

Preferably, the rolling assembly comprises a trolley, and the trolley is further provided with guide wheels.

Further preferably, a guide rail is arranged on the cross beam, and the trolley is arranged on the guide rail; the guide wheels are positioned at two sides of the guide rail.

Preferably, the driving lifting appliance and the driven lifting appliance are connected through a connecting rod.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:

1. the displacement and adjustment of the lifting appliance on the cross beam are realized; the power component is arranged below the cross beam, so that the sliding distance is greatly increased; the rolling friction between the rolling assembly and the cross beam is adopted, so that the sliding is lighter and more flexible; the trouble of maintenance when a hoisting steel wire rope is pulled is avoided;

2. the moving mechanism can adopt a module vehicle or a guide rail, the mobility of the module vehicle is strong, the adaptability to the field is greatly enhanced, the use cost is greatly reduced, the use time is saved, the operation is flexible, the occupied space for operation is small, the lifting, jacking and short-distance transferring can be realized, the transferring route is not limited, the reliability is high, and the operation is convenient, so that the lifting operation requirement of various working conditions can be met; the guide rail can work in the conditions that some places are straight lines, the displacement distance is relatively short, the ageing requirement is not very high, the structure is simple, and the use cost is lower.

Drawings

Fig. 1 is a schematic front view of a crane main body in the present embodiment;

FIG. 2 is a schematic side view of the crane body in this embodiment;

fig. 3 is a schematic front view of the slidable lifting device in this embodiment;

FIG. 4 is a schematic side view of the slidable spreader of the present embodiment;

fig. 5 is a schematic front view of the first embodiment;

FIG. 6 is a schematic side view of the first embodiment;

fig. 7 is a schematic front view of the second embodiment;

FIG. 8 is a schematic side view of the second embodiment;

wherein: 10. a base; 100. a first connection portion; 101. a second connecting portion; 11. a lifting mechanism; 12. a cross beam; 120. a guide rail; 121. a convex edge; 122. a sliding oil cylinder fixing seat; 13. a slidable lifting appliance; 130. an active lifting appliance; 1300. a fixing frame; 1301. a first hanger plate; 1302. a second hanger plate; 1303. a trolley; 1304. a guide wheel; 1305. an L-shaped bending piece; 1306. a connecting shaft; 1307. a shaft sleeve; 131. a driven sling; 132. a connecting rod; 133. a sliding oil cylinder; 14. an electric control box; 15. a power station; 2. a module vehicle; 20. a connecting piece; 30. a guide rail; 31. and a walking oil cylinder.

Detailed Description

The invention is further described below with reference to the accompanying drawings and examples:

a portal crane as shown in fig. 1 and 2, which comprises a crane body and a moving mechanism arranged at the bottom of the crane body.

In this embodiment: the crane body comprises a pair of bases 10, a lifting mechanism 11 arranged on the bases 10, a cross beam 12 connected between the tops of the pair of lifting mechanisms 11, a slidable lifting tool 13 movably arranged on the cross beam 12 and an electric control mechanism arranged on the bases 10.

Wherein: the base 10 is provided with a first connecting part 100 and a second connecting part 101; the bottom of the base 10 is provided with a guide groove (not shown in the drawing).

The lifting mechanism 11 comprises an outer sleeve fixed on the base 10 through a pin shaft, a lifting oil cylinder arranged in the outer sleeve and an inner sleeve fixed on a cylinder sleeve of the lifting oil cylinder, and a cross beam 12 is connected to the top of the inner sleeve through a bolt. The bottom of the lifting oil cylinder is provided with a lifting oil cylinder seat, and the outer sleeve is provided with a first fixed oil cylinder (1 lifting device 2 in each group and 2 groups) for fixing the inner sleeve and a second fixed oil cylinder (2 lifting devices 2 in each group and 2 groups) for fixing the lifting oil cylinder seat. In addition, the lifting mechanism 11 further comprises a micro-electric control system and a stay wire sensor, wherein the micro-electric control system and the stay wire sensor are used for carrying out lifting control on the micro-electric control system, the micro-electric control system is connected with the stay wire sensor through signals, and through signal feedback of the stay wire sensor, the micro-electric control system can ensure synchronization of lifting actions through closed loop control.

As shown in fig. 3 and 4: the slidable lifting device 13 comprises a driving lifting device 130, a driven lifting device 131 connected with the driving lifting device 130, and a power component for driving the driving lifting device 130 to slide. The driving sling 130 and the driven sling 131 are connected through a connecting rod 132.

In this embodiment: the active lifting appliance 130 comprises a fixed frame 1300, a lifting plate component connected to the fixed frame 1300, and a rolling component connected to the bottom of the fixed frame 1300, wherein the rolling component is arranged above the cross beam 12, and the power component is arranged below the cross beam 12.

The hanger plate assemblies are provided in two groups, which are respectively connected to opposite sides of the fixing frame 1300. The hanging plate assembly comprises a first hanging plate 1301 connected to the fixing frame 1300, and a second hanging plate 1302 connected to the lower end of the first hanging plate 1301, wherein the lower end of the second hanging plate 1302 forms a hanging part, and the length and the number of the second hanging plates 1302 serving as the hanging plate assembly component parts can be changed according to actual needs.

The rolling assembly includes a trolley 1303. Each fixing frame 1300 is connected with two roller trolleys 1303 through bolts, the roller trolleys 1303 are arranged on the cross beam 12, the guide rail 120 is arranged on the cross beam 12, and then the roller trolleys 1303 are arranged on the guide rail 120. Four guide wheels 1304 can be arranged on the trolley 1303, and the guide wheels 1304 are positioned on two sides of the guide rail 120, so that the active lifting appliance 130 can be prevented from deflecting in the sliding process.

The active lifting device 130 further comprises an anti-lifting component connected to the bottom of the fixing frame 1300 and used for preventing the active lifting device 130 from lifting, the anti-lifting component comprises a pair of L-shaped bending pieces 1305, bending directions of the pair of L-shaped bending pieces 1305 are opposite, and the pair of L-shaped bending pieces 1305 are located on two sides of the rolling component. As shown in fig. 4, the upper part of the cross beam 12 is provided with a convex edge 121 protruding to both sides, and the convex edge 121 is covered by the bending of the pair of L-shaped bending pieces 1305.

In this embodiment: the structure of the driven sling 131 is the same as that of the driving sling 130, and of course, other structures of the driven sling 131 may be adopted.

The power component comprises a sliding oil cylinder 133, a cylinder sleeve of the sliding oil cylinder 133 is fixed at the bottom of the beam 12, a piston rod end of the sliding oil cylinder 133 is connected to the active lifting appliance 130, a sliding oil cylinder fixing seat 122 is arranged at the bottom of the beam 12, and the cylinder sleeve of the sliding oil cylinder 133 can be fixed on the sliding oil cylinder fixing seat 122. In addition, in order to facilitate connection of the piston rod end of the sliding cylinder 133 and the active lifting tool 130, a connecting shaft 1306 is connected between the two groups of first lifting plates 1301, the piston rod end of the sliding cylinder 133 is connected to the connecting shaft 1306, and a shaft sleeve 1307 is sleeved outside the connecting shaft 1306 to increase rigidity of the connecting shaft 1306.

When the weight lifted by the crane slides along with the lifting tool, the related control button can be operated to enable the piston rod of the sliding oil cylinder 133 to extend or retract, and the piston rod pushes (pulls) the driving lifting tool 130 so as to drive the driven lifting tool 131 to move forwards or backwards along the cross beam 12 together through the connecting rod 132, thereby achieving the purpose of shifting the weight.

The electric control mechanism is used for controlling the lifting mechanism 11, and comprises an electric control box 14 and a power station 15, wherein the power station 15 can adopt a hydraulic power station.

Embodiment one:

as shown in fig. 5 and 6: in this embodiment: the moving mechanism includes a module car 2, and the base 10 is fixed to the module car 2 by a first connection portion 100.

The module car 2 comprises a frame, a plurality of suspension mechanisms and steering mechanisms which are arranged below the frame, wherein tires are connected below the suspension brackets, the suspension mechanisms and the steering mechanisms generally comprise suspension cylinders and steering cylinders, the module car 2 is provided with special hydraulic power stations for providing power for and driving the suspension cylinders and the steering cylinders to walk, and the module car 2 and the lifting mechanisms 11 can be respectively connected with one hydraulic power station or jointly connected with one hydraulic power station. The module vehicle 2 can be provided with a remote controller which is specially operated to walk, turn and lift, and the remote controller is operated to realize multiple actions of walking, turning and lifting; the multi-mode steering function of the module car 2 can realize steering modes such as straight running, horizontal running, inclined running, center rotation, head swinging, tail swinging and the like; the number of the axes of the module vehicle 2 can be regulated according to different rated lifting amounts of the gantry crane.

When the crane body is used with the modular car 2, it can be operated as follows:

1. firstly, respectively placing the base 10 of the crane body on two module vehicles 2, and fixing the base 10 and the module vehicles 2 through a first connecting part by using a connecting piece 20;

2. the module car 2 is operated to a proper position for lifting or transferring objects, so that the slidable lifting tool 13 can be opposite to the lifting point position on the heavy object;

3. shutting down the module vehicle 2;

4. the lifting height of the crane body and the transverse position of the slidable lifting tool 13 are respectively adjusted to align with a lifting hole on a heavy object to be lifted;

5. is connected with a slidable lifting appliance 13;

6. raising the weight to a proper height and placing the weight on other vehicles for transferring or stopping all the operations, and carrying out the next step;

7. operating the module vehicle, moving the module vehicle to a proper position, and then dropping the weight;

8. causing the modular cart 2 to move the preparation to the designated location to complete the lifting operation.

Therefore, the base is arranged on two independent walking module vehicles, and the displacement storage or stacking of the crane after lifting the heavy objects is realized by the synchronous operation of the two module vehicles, so that the adaptability of the crane to the field is greatly enhanced when the module vehicles are adopted as walking chassis, and the pre-paved track is not needed, thereby greatly reducing the use cost and saving the use time; and because of the characteristics of multi-mode steering, the device is flexible in operation, small in operation occupation space, capable of lifting, jacking and short-distance transferring, high in reliability, convenient to operate and capable of meeting the lifting operation requirements of various working conditions, and the transferring route is not limited by a track.

Embodiment two:

as shown in fig. 7 and 8: in this embodiment: the moving mechanism comprises a guide rail 30 and a walking oil cylinder 31, a guide bar is arranged on the upper plane of the guide rail 30, a guide groove at the bottom of the base 10 is matched with the guide bar, the base 10 and the preparation thereof can be prevented from shifting in the sliding process, and the base 10 can be ensured to advance along the preset direction under the push-pull of the walking oil cylinder 31. The cylinder liner of the traveling cylinder 31 is connected to the guide rail 30, and the rod end of the traveling cylinder 31 is connected to the second connecting portion 101, however, it is equivalent that the cylinder liner of the traveling cylinder 31 is connected to the second connecting portion 101, and the rod end of the traveling cylinder 31 is connected to the guide rail.

When the crane body and the guide rail 30 are matched for lifting and short-distance displacement, the following steps can be performed:

1. paving guide rails 30 at proper positions of weights to be lifted, wherein the lower surfaces of the guide rails 30 are required to be padded with gravels, sleepers and the like, and the distance between the guide rails 30 is determined according to the length of a beam 12 of a crane body;

2. the crane body is assembled on the guide rail 30, the piston rod end of the traveling cylinder 31 is connected with the second connecting part 101 on the base 10, and the cylinder sleeve of the traveling cylinder 31 is connected with the fixed screw hole on the guide rail 30;

3. the slidable lifting device 13 lifting devices of the crane body are respectively connected with corresponding lifting points of the lifted heavy objects;

4. lifting the weight;

5. the traveling cylinder 31 is contracted to advance (or retreat) the crane body, and when the traveling cylinder 31 is contracted to the shortest, bolts of cylinder liners of the traveling cylinder 31 fixed to the guide rail 30 are screwed off, and the cylinder liners are fixed to the next fixed position in the advancing direction;

6. repeating the action of the shrinkage cylinder, repeating the cycle until the weight is moved to a designated position, and operating the slidable lifting tool 13 to enable the slidable lifting tool to transversely meet the position requirement and then falling down;

7. then the crane body is removed and returned by other means or repeatedly contracted in the reverse direction by the traveling cylinder 31, so that the crane body returns to the original position and is removed.

Like this, the base setting is on the guide rail, and through the walking of two left and right walking hydro-cylinders that link to each other respectively with two left and right bases, realize that the hoist is deposited or is piled up in the aversion after lifting the heavy object, compare with embodiment one, the cost of preparation of this embodiment is lower, and the economic nature is better, but the adaptability to the place is relatively poor, and efficiency is also lower.

According to the invention, two or more sets of lifting or shifting tasks can be completed together, and in the working process, the actions of a plurality of devices can be controlled simultaneously through one remote controller, so that the synchronization is good.

The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.

Claims

1. The utility model provides a gantry crane, includes the hoist main part, sets up the mobile mechanism of hoist main part bottom, the hoist main part include a pair of base, set up the lifting mechanism on the base, connect a pair of the crossbeam between the lifting mechanism top and can remove set up the hoist that can slide on the crossbeam, its characterized in that: the movable lifting appliance comprises a driving lifting appliance, a driven lifting appliance connected with the driving lifting appliance and a power component used for driving the driving lifting appliance to slide, wherein the driving lifting appliance comprises a fixed frame, a lifting plate component connected to the fixed frame and a rolling component connected to the bottom of the fixed frame, the rolling component is arranged above the cross beam, and the power component is positioned below the cross beam;

the power component comprises a sliding oil cylinder, a cylinder sleeve of the sliding oil cylinder is fixed at the bottom of the cross beam, and a piston rod end of the sliding oil cylinder is connected to the active lifting appliance;

the lifting plate assemblies are provided with two groups, the two groups of lifting plate assemblies are respectively connected to two opposite sides of the fixed frame, each group of lifting plate assemblies comprises a first lifting plate connected to the fixed frame, a second lifting plate connected to the lower end of the first lifting plate and a connecting shaft connected between the pair of first lifting plates, lifting parts are formed at the lower ends of the second lifting plates, and the piston rod ends of the sliding cylinders of the power components are connected with the connecting shafts;

the active lifting appliance further comprises an anti-tilting assembly connected to the bottom of the fixing frame and used for preventing the active lifting appliance from tilting, the anti-tilting assembly comprises a pair of L-shaped bending pieces, the bending directions of the pair of L-shaped bending pieces are opposite, the pair of L-shaped bending pieces are located on two sides of the rolling assembly, convex edges protruding towards two sides are arranged on the upper portion of the cross beam, and the convex edges are wrapped by the bending of the pair of L-shaped bending pieces.

2. Gantry crane according to claim 1, characterized in that: the base is provided with a first connecting part and a second connecting part; the bottom of the base is provided with a guide groove.

3. Gantry crane according to claim 2, characterized in that: the moving mechanism comprises a module car, and the base is fixed with the module car through the first connecting part.

4. Gantry crane according to claim 2, characterized in that: the moving mechanism comprises a rail and a traveling oil cylinder, a guide bar is arranged on the upper plane of the rail, and a guide groove at the bottom of the base is matched with the guide bar; the cylinder sleeve of the walking cylinder is connected to the track, and the piston rod end of the walking cylinder is connected to the second connecting part.

5. Gantry crane according to claim 1, characterized in that: the crane main body also comprises an electric control mechanism, wherein the electric control mechanism comprises an electric control box and a power station which are arranged on the base.

6. Gantry crane according to claim 1, characterized in that: the bottom of the cross beam is provided with a sliding oil cylinder fixing seat, and a cylinder sleeve of the sliding oil cylinder is fixed on the sliding oil cylinder fixing seat.