Movable carrying lifting device

Abstract

The utility model discloses a movable carrying lifting device which comprises a pair of movable gantry cars, each movable gantry car comprises a gantry mechanism, a pair of walking mechanisms and a pair of lifting mechanisms, the walking mechanisms are used for moving the movable gantry cars, and the lifting mechanisms are used for lifting heavy objects. The bottoms of two stand columns of the gantry mechanism are fixedly connected with the walking mechanisms correspondingly. The upper ends of the pair of lifting mechanisms are respectively fixed on a cross beam of the gantry mechanism through upper connecting pieces; the movable carrying and lifting device further comprises a carrying mechanism used for bearing heavy objects, the two ends of the carrying mechanism are fixedly connected with the lower ends of the two lifting mechanisms of each movable gantry car through lower connecting pieces respectively, and the carrying mechanism is hung between the two movable gantry cars through the lifting mechanisms. According to the utility model, the railway vehicle and the large-scale maintenance device can be synchronously lifted on the same device, so that maintenance personnel can cooperatively work inside and outside the railway vehicle.

Description

Technical Field

[0001] The utility model relates to a mobile carrier lifting device. Background Art

[0002] When repairing or loading maintenance equipment on the bottom of a railway vehicle, a car lift or a large gantry crane is usually used to lift the railway vehicle.

[0003] When using a car lift for operation, multiple sets of car lifts are used to support and lift the railway vehicle from the bottom of the railway vehicle. CN109368510A discloses a gantry car lift, which is a lifting car lift. The gantry car lift includes a traveling unit, a supporting unit, a lifting unit and a control unit. When using the gantry car lift for operation, first the supporting unit holds the car body, and then the lifting unit raises the car body. However, when using a car lift to lift a railway vehicle, there is a maintenance slot at the bottom of the car lift, which is a hollow structure and cannot be used as a force-bearing point to load maintenance equipment. An additional lifting device is still needed to lift the maintenance equipment, which is not conducive to the fixing and stable use of the maintenance equipment. At the same time, the lifting height of the car lift is limited, resulting in limited working space at the bottom for maintenance personnel.

[0004] When using a large gantry crane for operation, the railway vehicle is usually lifted by a lifting rope. For example, CN209259527U discloses a gantry device for transportation and hoisting, including a bottom beam. Pulley wheels are fixedly connected to both sides of the bottom of the bottom beam. A vertical steel frame is vertically fixedly connected to the center of the top of the bottom beam. A control box is fixedly connected to the center of the front side of the vertical steel frame. A cross beam is horizontally fixedly connected to the top of the vertical steel frame. A sliding device is arranged on the surface of the cross beam. A connecting hook is arranged at the bottom of the sliding device. A chain winding mechanism is sleeved in the inner cavity of the connecting hook. CN 218754671U discloses a movable gantry lifting device, including two gantry lifting mechanisms, which are fixedly connected into a whole. The upper parts of the two gantry lifting mechanisms are fixedly connected by a reinforcing cross beam. The gantry lifting mechanism includes a liftable gantry frame and at least two electric hoists fixedly installed on the liftable gantry frame. The liftable gantry frame includes two outer side beams, a top beam fixedly connected to the tops of the two outer side beams, two inner side beams movably sleeved with the outer side beams, and two movable brackets fixedly installed at the bottoms of the inner side beams. At least two connecting pin beams are movably connected between the two liftable gantry frames. Through holes are evenly spaced on the sides of the outer side beams and the inner side beams. At least two of the connecting pin beams can be movably connected between the corresponding through holes of the two liftable gantry frames. When using such a large gantry crane to operate on the bottom of a railway vehicle, the vehicle is suspended in the air and there are no fixed support points at the bottom of the vehicle. When using large maintenance equipment, an additional lifting device is still needed, which is not conducive to the fixing and stable use of the maintenance equipment.

[0005] During the process of loading maintenance equipment under the vehicle body of the above-mentioned existing devices, there are problems such as the inability to fix the maintenance device, difficult handling and lifting, limited working space, and the inability to coordinate the pace of the personnel working under the vehicle body and outside the vehicle, which is not conducive to the reasonable completion of the operation. Summary of the Invention

[0006] In view of this, an object of the present invention is to provide a mobile carrier lifting device, which combines a carrier mechanism mainly in a flat plate structure with a gantry mechanism to realize the synchronous lifting of railway vehicles and large maintenance devices, and is conducive to the collaborative operation of maintenance personnel inside and outside railway vehicles.

[0007] The present invention adopts the following technical solutions to achieve the above object.

[0008] The present invention provides a mobile carrier lifting device, including a pair of movable gantry vehicles, and each movable gantry vehicle includes a gantry mechanism.

[0009] A pair of traveling mechanisms for the movement of the movable gantry vehicle, and

[0010] A pair of lifting mechanisms for lifting railway vehicles;

[0011] The bottom parts of the two columns of the gantry mechanism are respectively fixedly connected with a traveling mechanism; the upper ends of a pair of lifting mechanisms are respectively fixed on the cross beam of the gantry mechanism through upper connecting pieces;

[0012] The mobile carrier lifting device further includes a carrier mechanism for carrying railway vehicles;

[0013] Both ends of the carrier mechanism are respectively fixedly connected with the lower ends of the two lifting mechanisms of each movable gantry vehicle through lower connecting pieces, and the carrier mechanism is suspended between the two movable gantry vehicles through the lifting mechanisms.

[0014] In the present invention, the material of the gantry mechanism can be any high-strength material well-known in the art, preferably high-strength organic plastic or high-strength steel, more preferably high-strength steel, such as Q235B, Q345B, etc.

[0015] According to the mobile carrier lifting device of the present invention, preferably, reinforcing ribs are provided at the connection between the columns and the cross beam of the gantry mechanism. The reinforcing ribs can use any high-strength material well-known in the art, preferably high-strength organic plastic or high-strength steel, more preferably high-strength steel, such as HRB400E, HRB500E, HRB600E, etc. The setting of the reinforcing ribs can ensure that the gantry mechanism is more stable and enhance the load-bearing capacity.

[0016] For the mobile carrier lifting device according to the present utility model, preferably, the cross beam and the column of the gantry mechanism can be integrally formed or separately formed and assembled. The separate forming and assembling design is preferred, so that it can be flexibly assembled and applied according to the actual situation of the railway vehicle maintenance site.

[0017] For the mobile carrier lifting device according to the present utility model, preferably, the traveling mechanism includes a support frame and a pair of wheels. The middle part of the upper plane of the support frame is fixed to the bottom of the column of the gantry mechanism, and the pair of wheels are symmetrically arranged with respect to the plane defined by the column and the cross beam of the gantry mechanism. The plane defined by the column and the cross beam is the plane formed by the center line of the column and the center line of the cross beam as straight lines. Such a setting ensures that the traveling mechanism is more stable and is beneficial to the stability of traveling.

[0018] For the mobile carrier lifting device according to the present utility model, preferably, a pair of reinforcing ribs are provided at the connection between the support frame and the bottom of the column of the gantry mechanism, and the pair of reinforcing ribs are symmetrically arranged with respect to the plane defined by the column and the cross beam of the gantry mechanism. The reinforcing ribs can be made of any high-strength material known in the art, preferably high-strength organic plastic or high-strength steel, and more preferably high-strength steel, such as HRB400E, HRB500E, HRB600E, etc. The setting of the reinforcing ribs can further stabilize the fixed connection between the support frame and the column of the gantry mechanism, enhance the load-bearing capacity, and ensure the stable movement and operation of the mobile carrier lifting device.

[0019] In the present utility model, the material of the support frame can be any high-strength material known in the art, preferably high-strength organic plastic or high-strength steel, and more preferably high-strength steel, such as Q235B, Q345B, etc. The structure of the support frame can be any structure used for supporting walking in the art and can be selected from one of a flat plate, an I-shaped, a concave shape, etc.

[0020] For the mobile carrier lifting device according to the present utility model, preferably, the wheels can be universal wheels. More preferably, the universal wheels are made of high-strength iron core polyurethane or high-strength steel material, and more preferably high-strength steel material, such as LD200 wheels, LD300 wheels, LD400 wheels, LD600 wheels, etc.

[0021] For the mobile carrier lifting device according to the present utility model, preferably, a pair of lifting mechanisms are symmetrically arranged with respect to the plane where the center line of the cross beam of the gantry mechanism is located.

[0022] Further preferably, the lifting mechanism is a lifting chain, and both the upper connecting member and the lower connecting member are lifting lugs. More preferably, the chain of the lifting chain and the lifting lugs are both selected from high-strength steel; even more preferably, the chain is selected from one of G70 chain, G80 chain, G90 chain, G100 chain, and the material of the lifting lug is selected from one of Q235B and Q345B. Appropriate high-strength materials can ensure the stable operation of the lifting mechanism during the load lifting process.

[0023] For the mobile carrier lifting device according to the present invention, preferably, the lifting chain is a manual hoist or an electric hoist.

[0024] For the mobile carrier lifting device according to the present invention, preferably, the carrier mechanism includes a pair of parallel load-bearing beams, and the two load-bearing beams are fixedly connected by connecting members to form a frame structure; a load-bearing plate is laid on the frame structure.

[0025] In the present invention, the load-bearing beam, the connecting member and the load-bearing plate can all be any high-strength materials well-known in the art, preferably high-strength organic plastics or high-strength steel, and more preferably high-strength steel, such as Q235B, Q345B, etc.

[0026] In some embodiments, the load-bearing beam can be selected from one of steel plates, steel pipes, and flat steel bars, preferably steel pipes, and more preferably rectangular steel pipes or square steel pipes; the connecting member can be selected from one of special-shaped steel plates, special-shaped steel pipes, and steel bars, preferably special-shaped steel plates or steel bars, and more preferably special-shaped steel plates; the carrier mechanism can use an integrally formed load-bearing plate or two or more load-bearing plates. The specifications and quantities of the load-bearing plates are designed according to the actual wheelbase and actual car body length of the railway vehicle to be overhauled, and are not limited here.

[0027] Selecting appropriate materials and structures for the load-bearing beam, the connecting member and the load-bearing plate can ensure the stable load-bearing of the railway vehicle during the lifting of the carrier mechanism.

[0028] For the mobile carrier lifting device according to the present invention, preferably, both ends of each load-bearing beam are fixedly connected to the lower connecting member, so that the carrier mechanism and the gantry mechanism are connected as a whole through the lifting mechanism.

[0029] The soft connection between the carrier mechanism and the gantry mechanism of the present invention is beneficial to adjusting the installation accuracy of the mobile carrier lifting device according to actual needs, improving the adaptability of the device of the present invention, and meeting the overhaul requirements of different types of railway vehicles.

[0030] For the mobile carrier lifting device according to the present utility model, considering that the width of railway vehicles is generally 2,500 - 3,500 mm and maintenance personnel and inspection devices need to be placed on the carrier mechanism together with the railway vehicle, preferably, the effective load-bearing length of the load beam is 1.5 - 3 times the width of the railway vehicle, that is, 3,750 - 10,500 mm, preferably 5,000 - 9,500 mm, and more preferably 6,000 - 9,000 mm. The effective load-bearing length described in the present utility model refers to the length of the load beam between two movable gantry vehicles.

[0031] For the mobile carrier lifting device according to the present utility model, the distance between two load beams only needs to be greater than the fixed distance between bogies of the railway vehicle. Considering cost savings in production, the distance between two load beams does not exceed the length of the railway vehicle. Given that the length of railway vehicles is generally 13,000 - 26,000 mm and the ratio of the fixed distance between bogies to the car body length is 1:1.4, the distance between two load beams can be 9,300 - 26,000 mm, preferably 9,500 - 20,000 mm, and more preferably 10,000 - 16,000 mm.

[0032] The reasonable effective load-bearing length of the present utility model can increase the operation space, which is more conducive to maintenance personnel operating the inspection device to inspect railway vehicles, and at the same time saves the production cost of the mobile carrier lifting device.

[0033] For the mobile carrier lifting device according to the present utility model, preferably, the rated load of the mobile carrier lifting device needs to be greater than the tare weight of the railway vehicle. In some embodiments, given that the tare weight of existing railway vehicles is 20 - 150 tons, the rated load of the mobile carrier lifting device of the present utility model can be 150 - 400 tons, preferably 200 - 380 tons, and more preferably 250 - 300 tons.

[0034] The mobile carrier lifting device of the present utility model effectively combines the characteristics of the gantry structure and the flat structure, has a short manufacturing cycle, a stable structure, and a low cost. The present utility model can realize the synchronous lifting of railway vehicles and large inspection devices on the same device, which is conducive to maintenance personnel to cooperate in the operation inside and outside the railway vehicle and meets the loading and unloading requirements of the undercarriage inspection device in different environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is the front view of the mobile carrier lifting device of the present utility model;

[0036] Figure 2 is the schematic diagram of the gantry mechanism of the present utility model;

[0037] Figure 3 is the schematic diagram of the traveling mechanism of the present utility model;

[0038] Figure 4 Schematic diagram of the lifting mechanism of the present utility model;

[0039] Figure 5 Schematic diagram of the carrying mechanism of the present utility model;

[0040] Figure 6 Side view of the mobile carrying and lifting device of the present utility model;

[0041] Figure 7 Operating state of the mobile carrying and lifting device of the present utility model Figure 1 ;

[0042] Figure 8 Operating state of the mobile carrying and lifting device of the present utility model Figure 2 .

[0043] Reference numerals

[0044] 1 - Gantry mechanism; 2 - Traveling mechanism, 21 - Support frame, 22 - Wheels;

[0045] 3 - Lifting mechanism, 31 - Upper connecting member, 32 - Lower connecting member;

[0046] 4 - Carrying mechanism, 41 - Load beam, 42 - Connecting member, 43 - Load-bearing plate;

[0047] 5 - Railway vehicle; 6 - Maintenance device. Detailed implementation manners

[0048] The present utility model will be further described below in conjunction with specific embodiments, but the protection scope of the present utility model is not limited thereto.

[0049] The "vehicle fixed distance" described in the present utility model refers to the horizontal distance between the centerlines of the two center plates of the railway vehicle underframe.

[0050] Example 1

[0051] Figure 1 Front view of the mobile carrying and lifting device of the present utility model. Figure 2 Schematic diagram of the gantry mechanism of the present utility model. Figure 3 Schematic diagram of the traveling mechanism of the present utility model. Figure 4 Schematic diagram of the lifting mechanism of the present utility model. Figure 5 Schematic diagram of the carrying mechanism of the present utility model. Figure 6 Side view of the mobile carrying and lifting device of the present utility model.

[0052] Such as Figures 1-5As shown in the figure, the mobile carrier lifting device of the present utility model is used on railway vehicles. When maintenance personnel are performing maintenance on railway vehicles, they use the mobile carrier lifting device of the present utility model to carry the maintenance device and lift the railway vehicle, so as to perform maintenance operations on the inside, outside, upper and lower parts of the railway vehicle simultaneously.

[0053] As Figure 1 and 6 As shown in the figure, the mobile carrier lifting device provided by the present utility model includes a pair of movable gantry vehicles. Each movable gantry vehicle includes a gantry mechanism 1, a pair of traveling mechanisms 2 for the movement of the movable gantry vehicle, and a pair of lifting mechanisms 3 for lifting the railway vehicle; the bottom parts of the two columns of the gantry mechanism 1 are respectively fixedly connected with a traveling mechanism 2; the upper ends of the pair of lifting mechanisms 3 are respectively fixed on the cross beam of the gantry mechanism 1 through upper connectors 31.

[0054] The mobile carrier lifting device further includes a carrier mechanism 4 for carrying the railway vehicle. The two ends of the carrier mechanism 4 are respectively fixedly connected with the lower ends of the two lifting mechanisms 3 of each movable gantry vehicle through lower connectors 32. The carrier mechanism 4 is suspended between the two movable gantry vehicles through the lifting mechanisms 3.

[0055] As Figure 2 As shown in the figure, the gantry mechanism in this embodiment is made of three 12mm thick Q345B I-beams. Flame cutting is used for blanking, and bevels are respectively cut at the contact parts of the I-beams at the top of the gantry, and full penetration welding is used to ensure the strength of the gantry. HRB400E steel reinforcing bars are arranged at the connection between the columns and the cross beam of the gantry mechanism 1.

[0056] As Figure 3 As shown in the figure, the traveling mechanism 2 includes a support frame 21 and a pair of wheels 22. The middle part of the upper plane of the support frame 21 is fixed to the bottom of the column of the gantry mechanism. The pair of wheels 22 are symmetrically arranged with respect to the plane defined by the columns and the cross beam of the gantry mechanism. A pair of HRB400E steel reinforcing bars are symmetrically arranged at the connection between the support frame 21 and the bottom of the column of the gantry mechanism 1 with respect to the plane defined by the columns and the cross beam of the gantry mechanism. In this embodiment, Q345B I-beam is selected as the support frame 21, and universal wheels are fixed below the support frame 21, and the wheel body uses LD200 wheels.

[0057] As Figure 4 As shown in the figure, in this embodiment, a pair of lifting mechanisms 3 are symmetrically arranged with respect to the plane where the center line of the cross beam of the gantry mechanism 1 is located. The lifting mechanism 3 is a lifting chain block. Both the upper connector 31 and the lower connector 32 adopt Q345B steel lifting lugs, and the lifting chain block adopts a manual hoist containing G80 chain.

[0058] As Figure 5As shown, the transport mechanism 4 includes a pair of parallel load beams 41, and the two load beams 41 are fixedly connected by a connecting member 42 to form a skeleton structure; a load-bearing plate 43 is laid on the skeleton structure. Both ends of each load beam 41 are fixed to the lower connecting member 32. In order to save production costs, this embodiment selects a number of short steel plates as the load-bearing plates.

[0059] This embodiment takes the C70 open wagon for maintenance of railway freight vehicles as an example. The load beam 41, the connecting piece 42 and the load-bearing plate 43 are all made of Q345B steel. Among them, the load beam 41 is made of a 5mm thick rectangular steel pipe, the connecting piece 42 is made of a 6mm thick I-beam, and the load-bearing plate 43 is made of a 3mm thick steel plate.

[0060] Both ends of each load beam 41 are fixed to the lower connecting member 32 , so that the transport mechanism 4 and the gantry mechanism 1 are connected as a whole through the lifting mechanism 3 .

[0061] Considering that the vehicle length of the C70 open car is 13976 mm, the maximum vehicle width is 3242 mm, and the vehicle spacing is 9270 mm, the effective load-bearing length of the load beam 41 of this embodiment is 6500 mm, and the distance between the two load beams 41 is 11100 mm.

[0062] The rated load of the mobile carrying and lifting device of this embodiment is 250 tons.

[0063] Example 2

[0064] The mobile carrying and lifting device of Example 1 was used to inspect and repair the C70 type open wagon of railway freight vehicle. Figure 7 and Figure 8 As shown, the maintenance personnel use the walking mechanism 2 to push the mobile transport lifting device to the railway vehicle maintenance point, use the crane to lift the railway vehicle 5, maintenance equipment 6 and maintenance personnel onto the load-bearing plate 43 of the transport mechanism 4, and then remove the crane. The staff on both sides of the gantry mechanism pull the lifting guide chain at the same time, and lift the railway vehicle 5, maintenance equipment 6 and maintenance personnel to the specified height through the transport mechanism 4. The maintenance personnel can smoothly perform maintenance operations on the inside and outside of the railway vehicle and the top and bottom at the same time. The maintenance personnel on the transport mechanism 4 can easily and conveniently push the maintenance equipment 6 into the bottom of the railway vehicle 5 for maintenance operations without the help of other transport tools, eliminating the space limitation of the bottom of the vehicle when using a vehicle crane for maintenance.

[0065] The present invention is not limited to the above-mentioned embodiments. Without departing from the essential content of the present invention, any deformation, improvement, and substitution that can be thought of by those skilled in the art shall fall within the scope of the present invention.

Claims

1. A mobile carrying and lifting device, comprising a pair of movable gantry vehicles, characterized in that: Each movable gantry vehicle includes a gantry mechanism, A pair of walking mechanisms for moving the movable gantry, and, A pair of lifting mechanisms for raising and lowering railway vehicles; The bottoms of the two uprights of the gantry mechanism are respectively fixedly connected to a walking mechanism; the upper ends of a pair of lifting mechanisms are respectively fixed to the crossbeam of the gantry mechanism through upper connecting pieces; The mobile carrying and lifting device also includes a carrying mechanism for carrying the railway vehicle; The two ends of the transport mechanism are respectively fixedly connected to the lower ends of the two lifting mechanisms of each movable gantry vehicle through lower connecting pieces, and the transport mechanism is suspended between the two movable gantry vehicles through the lifting mechanisms.

2. The mobile carrying and lifting device according to claim 1, characterized in that: Reinforcing ribs are arranged at the connection between the upright column and the cross beam of the gantry mechanism.

3. The mobile carrying and lifting device according to claim 1, characterized in that: The walking mechanism comprises a support frame and a pair of wheels. The middle part of the upper plane of the support frame is fixed to the bottom of the column of the gantry mechanism. The pair of wheels are symmetrically arranged relative to the plane defined by the column and the crossbeam of the gantry mechanism.

4. The mobile carrying and lifting device according to claim 3, characterized in that: A pair of reinforcing ribs are arranged at the connection between the support frame and the bottom of the column of the gantry mechanism, and the pair of reinforcing ribs are symmetrically arranged relative to the plane defined by the column and the crossbeam of the gantry mechanism.

5. The mobile carrying and lifting device according to claim 3 or 4, characterized in that: The wheel is a universal wheel.

6. The mobile carrying and lifting device according to claim 1, characterized in that: The lifting mechanism is a lifting guide chain, and the upper connecting piece and the lower connecting piece are both lifting ears.

7. The mobile carrying and lifting device according to claim 6, characterized in that: The lifting guide chain is a manual hoist or an electric hoist.

8. The mobile carrying and lifting device according to claim 1, characterized in that: The transport mechanism comprises a pair of load beams arranged in parallel, the two load beams are fixedly connected by connecting pieces to form a skeleton structure; a load-bearing plate is laid on the skeleton structure.

9. The mobile carrying and lifting device according to claim 8, characterized in that: Both ends of each load beam are fixed to the lower connecting piece.

10. The mobile carrying and lifting device according to claim 8, characterized in that: The effective load-bearing length of the load beam is 3750~10500mm; the distance between two load beams is 9300~26000mm.

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