阅读说明：本技术 一种承载双梁的龙门轨道式小车 (Gantry rail type trolley for bearing double beams ) 是由 姚文岳 钟宇光 孙勇强 祝宏铭 于 2019-09-25 设计创作，主要内容包括：本发明提供一种承载双梁的龙门轨道式小车,龙门架为方型框架结构,龙门两边设有工型小车轨道。小车由轨道车轮、电机、减速器构成,其中小车前段和后段各有两个轮子,主要起到承载支撑作用,中间两车轮为驱动轮,提供运行动力,下排车轮用于增加稳定性。小车下排车轮通过弹簧滑轨固定导轨上增加稳定性,小车主要用来承载横梁并进行移动,通过电机驱动实现小车反复直线运动。小车底盘低,承载能力好,稳定性高。(The invention provides a gantry rail type trolley for bearing double beams. The dolly comprises rail wheel, motor, reduction gear, and wherein dolly anterior segment and back end respectively have two wheels, mainly play and bear the weight of the supporting role, and two middle wheels are the drive wheel, provide operation power, and the wheel is used for increasing stability down. The lower row of wheels of the trolley is provided with stability through a spring slide rail fixed guide rail, the trolley is mainly used for bearing a cross beam and moving, and the trolley can move linearly and repeatedly through the driving of a motor. The chassis of the trolley is low, the bearing capacity is good, and the stability is high.)

1. The utility model provides a bear longmen rail mounted dolly of two roof beams, is including setting up two sets of dolly tracks, two crossbeams of symmetry setting on the portal frame, its characterized in that: also comprises two rail trolleys, each group of trolley tracks comprises two rail trolleys which are arranged on the portal frame up and down, the rail trolley comprises a chassis, a frame arranged on the chassis, four bearing wheels symmetrically arranged on two sides of the chassis, two middle wheels respectively arranged between the two bearing wheels on the same side, four vertical rods symmetrically arranged on two sides of the lower end of the chassis, a horizontal rod arranged between the two vertical rods on the same side, and six lower wheels arranged between the two horizontal rods, wherein the two middle wheels are respectively driven by a motor, the lower wheels are contacted with a trolley track below, the bearing wheels and the middle wheels are contacted with the trolley track above, the side face of the frame is provided with a lead screw driving motor, the output end of the lead screw driving motor is connected with a lead screw, the lead screw is provided with two trolley bearing moving platforms with opposite rotating directions, and two cross beams are respectively arranged in the four trolley bearing moving platforms.

2. The gantry rail type trolley for bearing the double beams as claimed in claim 1, wherein: the trolley bearing moving platform is provided with a sliding groove, and the cross beam is provided with a sliding rail matched with the sliding groove.

3. The gantry rail type trolley for carrying the double beams as claimed in claim 1 or 2, wherein: the bearing wheel is a concave bearing wheel.

Technical Field

The invention is used for moving an upper cross beam of a portal frame, in particular to a portal rail type trolley for bearing double beams, belonging to the mechanistic field.

Background

The rail-type trolley is an important way for realizing the functions of bearing and transporting, and mainly moves on a rail on the gantry, so that a beam borne by the rail-type trolley quickly approaches a target position in the longitudinal direction. The beam is difficult to achieve speed and stability when moving, which requires an auxiliary connection device to improve efficiency. The rail trolley is used as a movable connecting device, so that the rail trolley is a convenient and efficient mode.

The conventional gantry rail trolley generally carries a single cross beam and has low motion stability, and the requirement of rapidness, accuracy and stability cannot be met when the gantry rail trolley moves to a target position.

Disclosure of Invention

The invention aims to provide a double-beam bearing gantry rail type trolley for solving the problem of longitudinal movement stability of a gantry double-beam.

The purpose of the invention is realized as follows: the trolley comprises two groups of trolley tracks symmetrically arranged on a portal frame, two cross beams and two rail trolleys, wherein each group of trolley tracks comprises two trolley tracks which are arranged on the portal frame from top to bottom, each rail trolley comprises a chassis, a frame arranged on the chassis, four bearing wheels symmetrically arranged on two sides of the chassis, two middle wheels respectively arranged between the two bearing wheels on the same side, four vertical rods symmetrically arranged on two sides of the lower end of the chassis, a horizontal rod arranged between the two vertical rods on the same side and six lower wheels arranged between the two horizontal rods, the two middle wheels are respectively driven by a motor, the lower wheels are in contact with the trolley tracks on the lower part, the bearing wheels and the middle wheels are in contact with the trolley tracks on the upper part, a lead screw driving motor is arranged on the side surface of the frame, the output end of the lead screw driving motor is connected with a lead screw, and two trolley bearing moving platforms with opposite rotation directions are, the two beams are respectively arranged in the four trolley bearing moving platforms.

The invention also includes such structural features:

1. the trolley bearing moving platform is provided with a sliding groove, and the cross beam is provided with a sliding rail matched with the sliding groove.

2. The bearing wheel is a concave bearing wheel.

Compared with the prior art, the invention has the beneficial effects that: the double-motor driving is adopted, so that the driving force can be improved, the bearing capacity is greatly increased, the moving rapidity, the accuracy and the stability of the cross beam are greatly improved, and the trolley is provided with a lower chassis and concave wheels, so that the moving stability is increased. The upper and lower rows of wheels can ensure that the trolley can reliably and stably move on the track. The movable platform can adjust the position of the cross beam and improve the position precision.

Drawings

Fig. 1 is a schematic view of the overall structure of the gantry of the present invention.

Fig. 2 is an overall structure view of the rail car.

Fig. 3 is a view showing the internal structure of the rail car.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The specific implementation scheme of the invention is that two rail trolleys are used for bearing and connecting double cross beams to move on a gantry rail. The driving wheel drives the whole trolley through the motor and the speed reducer, the lead screw moving platform on the trolley body is connected with the bearing double cross beams, and the lower row of wheels are fixed on the guide rails through the spring slide rails, so that the cross beams can rapidly and stably move longitudinally on the gantry.

The invention relates to a gantry rail type trolley for bearing double beams, which comprises a gantry 1, two trolley rails 2, two beams 3, two rail trolleys 4, a trolley bearing moving platform 7 connected with the double beams 3, four concave bearing wheels 11, two driving wheels 12, two motors 14, two sets of worm gear reducers 13, a screw rod moving platform 7 and spring slide rails 6. As shown in figure 1, the beam 3 can do linear motion on the portal frame 1, and the beam 3 is processed into an I-shaped track which can move transversely on the beam together with the hanging frame. Two tracks are processed on a portal frame, a trolley is placed on the track 2 to serve as an auxiliary moving device of a beam 3, lower wheels 5 of the trolley are fixed on the track through spring slide rails 6, the beam 3 is placed on a trolley moving platform 7, the platform moves on guide rails 9, a screw rod 10 is driven by a motor 8 to adjust the position of the beam, and as shown in figure 2, the beam is connected with the trolley to achieve longitudinal movement.

As shown in figure 3, two middle wheels 12 of the trolley are driven by a driving wheel through a motor 14 and a speed reducer 13 respectively, the wheels of the trolley are all concave and are matched with the trolley track 2, and the trolley chassis is designed into a periscopic low chassis structure so that the trolley is higher in moving stability. According to the invention, the beam can rapidly and stably move longitudinally through a series of structures and movement modes.

In conclusion, the invention is a gantry rail type trolley for bearing double beams. The portal frame is a square frame structure, and I-shaped trolley tracks are arranged on two sides of the portal. The dolly comprises rail wheel, motor, reduction gear, and wherein dolly anterior segment and back end respectively have two wheels, mainly play and bear the weight of the supporting role, and two middle wheels are the drive wheel, provide operation power, and the wheel is used for increasing stability down. The lower row of wheels of the trolley is provided with stability through a spring slide rail fixed guide rail, the trolley is mainly used for bearing a cross beam and moving, and the trolley can move linearly and repeatedly through the driving of a motor. The chassis of the trolley is low, the bearing capacity is good, and the stability is high.