阅读说明：本技术 一种伸缩式传动装置 (Telescopic transmission device ) 是由 马德平 王坤扬 冯俊亮 韩向福 闫永昌 于 2019-11-29 设计创作，主要内容包括：本发明公开了一种伸缩式传动装置,包括链轮箱和轨道小车链,轨道小车链由若干个轨道小车首尾铰接组成,轨道小车链首端的轨道小车与尾端的轨道小车通过张紧机构连接,轨道小车链与张紧机构组成一个环状支撑结构,轨道小车链的外侧设置有传动链条,每个轨道小车的顶部均通过螺纹副与传动链条连接,传动链链条与链轮箱大链轮一和大链轮二啮合。本发明中的传动部件均采用了模块化设计,可以根据工况的需求,自由组合,用途广泛,可以用于直线方式的传动也可以用于弧线运动轨迹的传动,并且张紧机构通过调节螺旋副来说实现传动链条的张紧,简单快捷方便。(The invention discloses a telescopic transmission device which comprises a chain wheel box and a small rail car chain, wherein the small rail car chain is formed by hinging a plurality of small rail cars end to end, the small rail car at the head end of the small rail car chain is connected with the small rail car at the tail end through a tensioning mechanism, the small rail car chain and the tensioning mechanism form an annular supporting structure, a transmission chain is arranged on the outer side of the small rail car chain, the top of each small rail car is connected with the transmission chain through a thread pair, and the transmission chain is meshed with a first large chain wheel and a second large chain wheel of the chain wheel box. The transmission components in the invention are all in modular design, can be freely combined according to the requirements of working conditions, have wide application, can be used for transmission in a linear mode and transmission in an arc motion track, and the tensioning mechanism realizes tensioning of a transmission chain by adjusting the screw pair, so that the tensioning mechanism is simple, rapid and convenient.)

1. A telescopic transmission characterized in that: the chain wheel box is connected with the rail trolley at the tail end of the rail trolley chain through a tensioning mechanism, and the rail trolley chain and the tensioning mechanism form an annular supporting structure; the outer side of the rail trolley chain is provided with a transmission chain, the top of each rail trolley is connected with the transmission chain through a thread pair, and the head end and the tail end of each transmission chain are respectively arranged on the rail trolleys at the head end and the tail end of the rail trolley chain; the chain wheel box comprises a base, a transmission frame II and a transmission frame I are respectively arranged above the left end and the right end of the base, a transmission shaft I and a transmission shaft II are respectively arranged in the transmission frame I and the transmission frame II, a large chain wheel I and a large chain wheel II are respectively arranged at the front ends of the transmission shaft I and the transmission shaft II, a small chain wheel I and a small chain wheel II are respectively arranged in the middle of the transmission shaft I and the transmission shaft II, and a chain wheel box chain is arranged between the small chain wheel I and the small chain wheel II; the rear end of the first transmission shaft is connected with the hydraulic motor.

2. The telescopic drive of claim 1, wherein: and a chain wheel box outer cover is arranged on the outer side of the chain wheel box, and the small chain wheel I, the small chain wheel II, the chain wheel box chain and the chain wheel tensioner are all positioned in the chain wheel box outer cover.

3. The telescopic drive of claim 2, wherein: and a hydraulic motor protective cover is arranged on the outer side of the hydraulic motor and is fixed on the chain wheel box outer cover.

4. The telescopic drive of claim 2, wherein: and a handle is arranged on the sprocket wheel box outer cover.

5. The telescopic drive of claim 1, wherein: and a chain wheel tensioner is arranged on the second transmission frame and used for tensioning a chain of the chain wheel box.

6. The telescopic drive of claim 1, wherein: two adjacent rail trolleys are connected through a movable hinge.

7. The telescopic drive of claim 1, wherein: the first large chain wheel and the second large chain wheel are both meshed with the transmission chain.

8. The telescopic drive of claim 1, wherein: the tensioning mechanism comprises a female plug connector and a male plug connector, wherein two lug plates are arranged at one end of the female plug connector, and a long-strip-shaped U-shaped groove is formed in the horizontal center of the other end of the female plug connector; one end of the male plug connector is provided with two lug plates, the other end of the male plug connector is provided with a horizontal plug, one end of the male plug connector with the lug plates is provided with a counter bore, one end of the female plug connector with the lug plates is provided with a thread pair, and the middle part of the horizontal plug is provided with a round hole groove; the horizontal plug of the male plug connector is plugged into the long-strip-shaped U-shaped groove of the female plug connector, and the bolt penetrates through the countersunk head of the male plug connector and is connected to the thread pair of the female plug connector through the round hole groove of the male plug connector.

9. The telescopic drive of claim 1, wherein: the rail trolley comprises two trolley frames, two rail wheels are installed below the trolley frames and connected through two support rods, the tops of the two rail wheels are connected through a connecting block, and the connecting block is connected with a transmission chain through a thread pair.

10. The telescopic drive of claim 9, wherein: the rail wheel comprises a steel wheel, a rolling bearing is arranged inside the steel wheel, an installation shaft is matched with the center of the bearing, a stopping gasket is fixedly arranged on the installation shaft in an installing mode, and the stopping gasket is locked on the installation shaft through a round nut.

Technical Field

The invention belongs to the technical field of pipeline cutting and welding, and particularly relates to a telescopic transmission device.

Background

With the increasing demand of energy transmission, the laying of pipelines becomes the main carrier of energy transmission, and the cutting and welding of pipelines are involved in the laying process of pipelines. The existing transmission mechanism is difficult to meet the requirements of cutting and welding and can adapt to the change of different pipeline diameters. It is very important to develop a set of transmission device capable of freely extending and retracting.

Disclosure of Invention

The invention aims to provide a telescopic transmission device which can be used for transmission of cutting and welding of a pipeline and has the double functions that the transmission structure can be changed along with the change of the diameter of the pipeline.

In order to achieve the purpose, the invention adopts the technical scheme that the telescopic transmission device comprises a chain wheel box and a small rail car chain, wherein the small rail car chain is formed by hinging a plurality of small rail cars end to end, the small rail car at the head end of the small rail car chain is connected with the small rail car at the tail end through a tensioning mechanism, and the small rail car chain and the tensioning mechanism form an annular supporting structure; the outer side of the rail trolley chain is provided with a transmission chain, the top of each rail trolley is connected with the transmission chain through a thread pair, and the head end and the tail end of each transmission chain are respectively arranged on the rail trolleys at the head end and the tail end of the rail trolley chain; the chain wheel box comprises a base, a transmission frame II and a transmission frame I are respectively arranged above the left end and the right end of the base, a transmission shaft I and a transmission shaft II are respectively arranged in the transmission frame I and the transmission frame II, a large chain wheel I and a large chain wheel II are respectively arranged at the front ends of the transmission shaft I and the transmission shaft II, a small chain wheel I and a small chain wheel II are respectively arranged in the middle of the transmission shaft I and the transmission shaft II, and a chain wheel box chain is arranged between the small chain wheel I and the small chain wheel II; the rear end of the first transmission shaft is connected with the hydraulic motor.

Preferably, a chain wheel box outer cover is arranged on the outer side of the chain wheel box, and the small chain wheel I, the small chain wheel II, the chain of the chain wheel box and the chain wheel tensioner are all located in the chain wheel box outer cover.

Preferably, a hydraulic motor protective cover is arranged on the outer side of the hydraulic motor and fixed on the sprocket wheel box outer cover.

Preferably, a handle is arranged on the sprocket box outer cover.

Preferably, the second transmission frame is provided with a chain wheel tensioner for tensioning a chain of the chain wheel box.

Preferably, two adjacent rail trolleys are connected through a movable hinge.

Preferably, the first large chain wheel and the second large chain wheel are both meshed with a transmission chain.

Preferably, the tensioning mechanism comprises a female plug connector and a male plug connector, wherein one end of the female plug connector is provided with two lug plates, and the other end of the female plug connector is provided with a long-strip-shaped U-shaped groove in the horizontal center; one end of the male plug connector is provided with two lug plates, the other end of the male plug connector is provided with a horizontal plug, one end of the male plug connector with the lug plates is provided with a counter bore, one end of the female plug connector with the lug plates is provided with a thread pair, and the middle part of the horizontal plug is provided with a round hole groove; the horizontal plug of the male plug connector is plugged into the long-strip-shaped U-shaped groove of the female plug connector, and the bolt penetrates through the countersunk head of the male plug connector and is connected to the thread pair of the female plug connector through the round hole groove of the male plug connector.

Preferably, the rail trolley comprises two trolley frames, two rail wheels are installed below the trolley frames, the two rail wheels are connected through two support rods, the tops of the two rail wheels are connected through a connecting block, and the connecting block is connected with the transmission chain through a thread pair.

The invention has the following beneficial effects: the transmission components such as the rail trolley are connected through the hinge, the transmission chain is tensioned through the tensioning mechanism and the like, the modular design is adopted, the requirements that the mechanism can be freely adjusted according to the size of a workpiece when the pipeline type workpiece is cut and welded, the pipeline type workpiece can be freely combined according to the requirements of use working conditions, and the purposes are extremely wide are met; the small chain wheel is driven to rotate by the hydraulic motor, and the large chain wheel is driven by the small chain wheel to drive the transmission chain and the small rail car to rotate, so that the arc motion track is realized in a linear motion mode, and the transmission is more stable and reliable; the tensioning mechanism realizes tensioning of the transmission chain by adjusting the screw pair, and is simple and convenient; the open-loop external transmission of the transmission chain breaks through the traditional chain closed-loop internal-wrapping transmission mode and meets the use requirements of some special occasions; and the movable hinge between the small rail cars can be adjusted at 360 degrees, so that the device is suitable for workpieces with various external dimensions. The sprocket case dustcoat plays rain-proof, dustproof, prevents the effect that the foreign matter got into, has guaranteed whole power unit stability in use, and sprocket case dustcoat becomes the arc curved surface, and the structure is the rotatable flip structure of three-sided closed one side, and the convenience of installation and later maintenance has been guaranteed to the side flip structure.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention without limiting the invention in which:

FIG. 1 is a schematic view of the overall structure of a telescopic transmission;

FIG. 2 is an overall elevation view of the telescopic transmission;

FIG. 3 is a schematic view of the tensioning mechanism;

FIG. 4 is a schematic cross-sectional view of the tensioning mechanism along the vertical center;

FIG. 5 is a schematic view of the exterior of the sprocket housing;

FIG. 6 shows a top view of the sprocket cassette;

FIG. 7 is a schematic view showing an internal structure of a sprocket case;

FIG. 8 shows a side view of the interior of the sprocket housing;

FIG. 9 is a schematic structural view of the rail car;

FIG. 10 shows a top view of the rail car;

FIG. 11 shows a side view of the rail car;

fig. 12 is a partially enlarged view of fig. 11.

Reference numbers in the figures: 1, a profiling tool rest; 2, a small rail car; 3, a sprocket wheel box; 4, a tensioning mechanism; 5, a movable hinge; 6, a transmission chain; 2-1 supporting rod; 2-2 trolley frame; 2-3 rail wheels; 2-4 installing the shaft; 2-5 rolling bearings; 2-6 round nuts; 2-7 stopping back cushion pieces; 2-8 steel wheels; 2-9 connecting blocks; 3-101 large chain wheel I; 3-102 large chain wheel II; 3-2 sprocket tensioners; 3-3, a base; 3-401 a first transmission frame; 3-402 a second transmission frame; 3-5 hydraulic motors; 3-6 sprocket box chains; 3-701 small chain wheel I; 3-702 small chain wheel II; 3-8 sprocket box outer covers; 3-9 handles; 3-10 hydraulic motor outer covers; 3-11 of a limit pin; 3-12 hinge; 4-1 female plug-in connector; 4-2 male plug connectors; 4-3 bolts; 4-4 ear plates; 4-5U-shaped grooves; 4-6 horizontal plugs; 4-7 mounting holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.