阅读说明：本技术 一种用于建造伸缩桥的自平衡连杆机构 (Self-balancing link mechanism for building telescopic bridge ) 是由 孟凡超 常志军 金秀男 吴家君 刘成旭 赵博 于 2020-12-31 设计创作，主要内容包括：本发明涉及一种用于建造伸缩桥的自平衡连杆机构,包括连杆机构、平台及配重装置；所述连杆机构由连接架、连杆一、连杆二、连杆三及立柱组成；所述连接架包括连接架一、连接架二；所述连杆一包括连杆一A、连杆一B及连杆一C；所述连杆二包括连杆二A、连杆二B；所述连杆三包括连杆三A、连杆三B、连杆三C；本发明所述自平衡连杆机构不仅可以实现伸缩,而且伸缩效率比传统的伸缩结构高,并且具有自平衡特性,仅需要很小的力就可以推动结构进行伸展和缩回。(The invention relates to a self-balancing link mechanism for constructing a telescopic bridge, which comprises a link mechanism, a platform and a counterweight device, wherein the platform is arranged on the link mechanism; the connecting rod mechanism consists of a connecting frame, a connecting rod I, a connecting rod II, a connecting rod III and an upright post; the connecting frame comprises a first connecting frame and a second connecting frame; the first connecting rod comprises a first connecting rod A, a first connecting rod B and a first connecting rod C; the second connecting rod comprises a second connecting rod A and a second connecting rod B; the third connecting rod comprises a third connecting rod A, a third connecting rod B and a third connecting rod C; the self-balancing link mechanism not only can realize extension and retraction, but also has higher extension and retraction efficiency than the traditional extension structure, has self-balancing characteristic, and can push the structure to extend and retract only by small force.)

1. A self-balancing link mechanism for constructing a telescopic bridge is characterized by comprising a link mechanism, a platform and a counterweight device; the connecting rod mechanism consists of a connecting frame, a connecting rod I, a connecting rod II, a connecting rod III and an upright post; the connecting frame comprises a first connecting frame and a second connecting frame; the first connecting rod comprises a first connecting rod A, a first connecting rod B and a first connecting rod C; the second connecting rod comprises a second connecting rod A and a second connecting rod B; the third connecting rod comprises a third connecting rod A, a third connecting rod B and a third connecting rod C; the top end of the upright post is hinged with one end of a first connecting rod C, the other end of the first connecting rod C is hinged with one end of a first connecting rod B, the other end of the first connecting rod B is hinged with one end of a first connecting rod A, the other end of the first connecting rod A is hinged with one end of a first connecting frame, and the other end of the first connecting frame is simultaneously hinged with one end of a second connecting frame and one end of a second connecting rod A; the other end of the connecting frame II is hinged with one end of a connecting rod III A, and the other end of the connecting rod III A is hinged with one end of a connecting rod III B and one end of a connecting rod III C at the same time; the other end of the third connecting rod B is hinged with the bottom end of the upright post, and the other end of the third connecting rod C is hinged with the first connecting rod C; the other end of the second connecting rod A is hinged with one end of the second connecting rod B, and the other end of the second connecting rod B is hinged with the first connecting rod C; a distance is reserved between a hinge point of the second connecting rod B and the first connecting rod C and a hinge point of the third connecting rod C and the first connecting rod C, and the hinge point of the third connecting rod C and the first connecting rod C is closer to the upright; the upright post is vertically arranged on the platform; the counterweight device is arranged on the platform and can synchronously move along the telescopic direction of the link mechanism when the link mechanism is telescopic.

2. The self-balancing linkage for constructing a telescopic bridge according to claim 1, wherein all the hinge points in the linkage are hinged by hinges.

3. The self-balancing linkage mechanism for constructing telescopic bridges of claim 2, wherein the hinge is composed of a double-headed screw, a nut and a washer; two ends of the double-end screw rod respectively penetrate through the corresponding connecting parts and then are locked through nuts, and gaskets are arranged between the nuts and the corresponding connecting parts.

4. The self-balancing linkage mechanism for constructing a telescopic bridge, as claimed in claim 1, wherein the posts are channel steel members having a "[" shape in cross section, and the notches are provided toward one end of the link frame.

5. The self-balancing linkage mechanism for constructing a telescopic bridge as claimed in claim 1, wherein the first connecting frame and the second connecting frame are frame-type steel members consisting of side plates and connecting plates; 2 side plates are arranged in parallel and connected through a connecting plate; the number of the first connecting rod A, the number of the first connecting rod B, the number of the first connecting rod C, the number of the second connecting rod A, the number of the second connecting rod B, the number of the third connecting rod A, the number of the third connecting rod B and the number of the third connecting rod C are 2, and the connecting rods are symmetrically arranged relative to the center of the connecting frame.

6. The self-balancing linkage mechanism for constructing a telescopic bridge according to claim 1 or 5, wherein the first connecting rod A, the first connecting rod B, the first connecting rod C, the second connecting rod A, the second connecting rod B, the third connecting rod A, the third connecting rod B and the third connecting rod C are made of steel plates.

7. The self-balancing linkage mechanism for building telescopic bridges of claim 1, wherein the platform is a steel platform or a concrete platform, the width of the platform is wider than the width of the columns and the counterweight device, and the length of the platform is longer than the moving distance of the counterweight device.

8. The self-balancing linkage mechanism for constructing a telescopic bridge according to claim 1, wherein the moving direction and the moving distance of the counterweight device are controlled in interlocking with the telescopic direction and the telescopic length of the linkage mechanism.

Technical Field

The invention relates to the technical field of telescopic bridge construction, in particular to a self-balancing connecting rod mechanism for constructing a telescopic bridge.

Background

A movable bridge is a type of bridge that has dynamic moving parts that can be used to change the shape of the bridge, usually in order to allow a ship to pass through it smoothly. There are many types of movable bridges, which differ in the manner of conversion. The most popular types are suspension bridges or small bridges, others are telescopic bridges, swing bridges, tilt bridges, vertical lift bridges, transport bridges, etc.

For the design of the telescopic bridge, the key component is a telescopic mechanism for realizing telescopic action. At present, but extending structure usually has only limited several, and the most common is scissors fork structure "X" shape structure articulated in middle part promptly, realizes the flexible purpose of structure through the angle between each part in the adjustment "X" shape structure, and the structure that often needs to promote is big more, and the driving force that needs is just big more.

Disclosure of Invention

The invention provides a self-balancing link mechanism for constructing a telescopic bridge, which can realize telescopic effect, has higher telescopic efficiency than a traditional telescopic structure, has self-balancing property and can push the structure to extend and retract only by small force.

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

a self-balancing link mechanism for constructing a telescopic bridge comprises a link mechanism, a platform and a counterweight device; the connecting rod mechanism consists of a connecting frame, a connecting rod I, a connecting rod II, a connecting rod III and an upright post; the connecting frame comprises a first connecting frame and a second connecting frame; the first connecting rod comprises a first connecting rod A, a first connecting rod B and a first connecting rod C; the second connecting rod comprises a second connecting rod A and a second connecting rod B; the third connecting rod comprises a third connecting rod A, a third connecting rod B and a third connecting rod C; the top end of the upright post is hinged with one end of a first connecting rod C, the other end of the first connecting rod C is hinged with one end of a first connecting rod B, the other end of the first connecting rod B is hinged with one end of a first connecting rod A, the other end of the first connecting rod A is hinged with one end of a first connecting frame, and the other end of the first connecting frame is simultaneously hinged with one end of a second connecting frame and one end of a second connecting rod A; the other end of the connecting frame II is hinged with one end of a connecting rod III A, and the other end of the connecting rod III A is hinged with one end of a connecting rod III B and one end of a connecting rod III C at the same time; the other end of the third connecting rod B is hinged with the bottom end of the upright post, and the other end of the third connecting rod C is hinged with the first connecting rod C; the other end of the second connecting rod A is hinged with one end of the second connecting rod B, and the other end of the second connecting rod B is hinged with the first connecting rod C; a distance is reserved between a hinge point of the second connecting rod B and the first connecting rod C and a hinge point of the third connecting rod C and the first connecting rod C, and the hinge point of the third connecting rod C and the first connecting rod C is closer to the upright; the upright post is vertically arranged on the platform; the counterweight device is arranged on the platform and can synchronously move along the telescopic direction of the link mechanism when the link mechanism is telescopic.

All hinged points in the link mechanism are hinged through hinged pieces.

The hinged part consists of a double-end screw rod, a nut and a washer; two ends of the double-end screw rod respectively penetrate through the corresponding connecting parts and then are locked through nuts, and gaskets are arranged between the nuts and the corresponding connecting parts.

The stand is the channel steel component that the cross section is "[" shape to the notch sets up towards link one end.

The first connecting frame and the second connecting frame are frame-type steel members consisting of side plates and connecting plates; 2 side plates are arranged in parallel and connected through a connecting plate; the number of the first connecting rod A, the number of the first connecting rod B, the number of the first connecting rod C, the number of the second connecting rod A, the number of the second connecting rod B, the number of the third connecting rod A, the number of the third connecting rod B and the number of the third connecting rod C are 2, and the connecting rods are symmetrically arranged relative to the center of the connecting frame.

The first connecting rod A, the first connecting rod B, the first connecting rod C, the second connecting rod A, the second connecting rod B, the third connecting rod A, the third connecting rod B and the third connecting rod C are all made of steel plates.

The platform is a steel platform or a concrete platform, the width of the platform is wider than the widths of the upright posts and the counterweight devices, and the length of the platform is longer than the moving distance of the counterweight devices.

And the moving direction and the moving distance of the counterweight device and the telescopic direction and the telescopic length of the link mechanism are controlled in an interlocking manner.

Compared with the prior art, the invention has the beneficial effects that:

1) the upright posts are connected with the connecting frame through a first connecting rod, a second connecting rod and a third connecting rod, and all connecting parts act simultaneously when the mechanism is subjected to external force, namely stretch simultaneously and contract simultaneously;

2) the self-balancing type telescopic structure has a self-balancing characteristic, can realize the extension and retraction of the whole structure only by applying a small force, and has higher telescopic efficiency than the traditional X-shaped telescopic structure with hinged middle part;

3) when the connecting rod mechanism contracts, the counterweight device synchronously moves towards the direction close to the stand column, when the connecting rod mechanism extends, the counterweight device synchronously moves towards the direction far away from the stand column, and the counterweight device balances the gravity center offset generated by the stretching of the connecting rod mechanism, so that the overall stability of the connecting rod mechanism during stretching is ensured.

4) The connecting structure has the advantages of few components, high connecting strength, low manufacturing cost, wide application, strong stability, high safety and simple maintenance.

Drawings

Fig. 1 is a schematic perspective view (in a state of being unfolded to a maximum length) of a self-balancing linkage mechanism for constructing a telescopic bridge according to the present invention.

Fig. 2a is a front view of fig. 1.

Fig. 2b is a side view of fig. 1.

Fig. 2c is a top view of fig. 1.

Fig. 3 is a schematic perspective view (contracted to a minimum length) of a self-balancing linkage mechanism for constructing a telescopic bridge according to the present invention.

Fig. 4a is a front view of fig. 3.

Fig. 4b is a side view of fig. 3.

Fig. 4c is a top view of fig. 3.

Fig. 5 is a three-dimensional schematic view (a state of being unfolded to a half length) of a self-balancing linkage mechanism for constructing a telescopic bridge according to the present invention.

Fig. 6a is a front view of fig. 5.

Fig. 6b is a side view of fig. 5.

Fig. 6c is a top view of fig. 5.

In the figure: 1. connecting frame I2, connecting frame II 3, connecting rod I A4, connecting rod I B5, connecting rod I C6, connecting rod II A7, connecting rod II B8, connecting rod III A9, connecting rod III B10, connecting rod III C11, hinge part 12, upright post 13, counterweight device 14 and platform

Detailed Description

The following further describes embodiments of the present invention with reference to the accompanying drawings:

as shown in fig. 1-4, the self-balancing link mechanism for constructing a telescopic bridge according to the present invention comprises a link mechanism, a platform and a counterweight device; the connecting rod mechanism consists of a connecting frame, a connecting rod I, a connecting rod II, a connecting rod III and an upright post 12; the connecting frame comprises a first connecting frame 1 and a second connecting frame 2; the first connecting rod comprises a first connecting rod A3, a first connecting rod B4 and a first connecting rod C5; the second connecting rod comprises a second connecting rod A6 and a second connecting rod B7; the third connecting rod comprises a third connecting rod A8, a third connecting rod B9 and a third connecting rod C10; the top end of the upright post 12 is hinged with one end of a first connecting rod C5, the other end of the first connecting rod C5 is hinged with one end of a first connecting rod B4, the other end of the first connecting rod B4 is hinged with one end of a first connecting rod A3, the other end of the first connecting rod A3 is hinged with one end of a first connecting frame 1, and the other end of the first connecting frame 1 is hinged with one end of a second connecting frame 2 and one end of a second connecting rod A6; the other end of the connecting frame II 2 is hinged with one end of a connecting rod III A8, and the other end of the connecting rod III A8 is hinged with one end of a connecting rod III B9 and one end of a connecting rod III C10 at the same time; the other end of the third connecting rod B9 is hinged with the bottom end of the upright post 12, and the other end of the third connecting rod C10 is hinged with the first connecting rod C5; the other end of the second connecting rod A6 is hinged with one end of a second connecting rod B7, and the other end of the second connecting rod B7 is hinged with a first connecting rod C5; the hinge point of the second connecting rod B7 and the first connecting rod C5 and the hinge point of the third connecting rod C10 and the first connecting rod C5 are separated by a certain distance, and the hinge point of the third connecting rod C10 and the first connecting rod C5 is closer to the upright 12; the upright post 12 is vertically arranged on the platform 14; the counterweight device 13 is provided on the platform 14 and can move synchronously in the link mechanism telescoping direction when the link mechanism telescopes.

All hinge points in the linkage mechanism are hinged by a hinge 11.

The hinged part 11 consists of a double-end screw rod, a nut and a washer; two ends of the double-end screw rod respectively penetrate through the corresponding connecting parts and then are locked through nuts, and gaskets are arranged between the nuts and the corresponding connecting parts.

The upright post 12 is a channel-shaped steel member having a "[" shape in cross section, and the notch is provided toward one end of the link.

The first connecting frame 1 and the second connecting frame 2 are frame-type steel members consisting of side plates and connecting plates; 2 side plates are arranged in parallel and connected through a connecting plate; the first connecting rod A3, the first connecting rod B4, the first connecting rod C5, the second connecting rod A6, the second connecting rod B7, the third connecting rod A8, the third connecting rod B9 and the third connecting rod C10 are all 2 and are symmetrically arranged relative to the center of the connecting frame.

The first connecting rod A3, the first connecting rod B4, the first connecting rod C5, the second connecting rod A6, the second connecting rod B7, the third connecting rod A8, the third connecting rod B9 and the third connecting rod C10 are all made of steel plates.

The platform 14 is a steel platform or a concrete platform, the width of the platform 14 is wider than the widths of the upright post 12 and the counterweight device 13, and the length of the platform 14 is longer than the moving distance of the counterweight device 13.

The moving direction and the moving distance of the counterweight device 13 are interlocked with the telescopic direction and the telescopic length of the link mechanism.

The self-balancing connecting rod mechanism for building the telescopic bridge changes the traditional X-shaped telescopic structure with hinged middle parts, increases the supporting part and improves the connecting mode, the structural form and the variety of the connecting rods. The self-balancing linkage mechanism comprises a supporting part, a connecting rod part and a counterweight part. The supporting part comprises an upright post and a platform, and the upright post is fixed on the platform and used for supporting the connecting rod mechanism. The connecting part comprises a hinge part for connecting the parts of the connecting rod part with each other and connecting the connecting rod part with the supporting part; the connecting rod part comprises four connecting parts, namely a connecting frame, a connecting rod I, a connecting rod II and a connecting rod III, and the inner ends of the 2 connecting frames are hinged and connected with the connecting rod part together; the first connecting rod C and the third connecting rod B which are connected with the upright post form a first group of cross structures, and the first connecting rod A, the second connecting rod A and the third connecting rod A which are connected with the connecting frame form a first group of parallel structures; the first connecting rod B, the second connecting rod B and the third connecting rod C form a second group of parallel structures; the two groups of parallel structures form a second group of cross structures, one end of each of the 2 groups of cross structures is connected with the 2 connecting frames, and the other end of each of the 2 groups of cross structures is connected with the upright post. The counterweight part comprises a counterweight device and a translation driving device connected with the counterweight device, and the translation driving device is fixedly connected with the platform or the upright column and is a linear driving device, such as a hydraulic cylinder, an air cylinder, an electric push rod and the like; the self-balancing mechanism is used for balancing the gravity center shift generated by the extension and contraction of the link mechanism, and the self-balancing performance of the link mechanism is ensured.

It should be noted that the cross structure formed between the first link and the second link according to the present invention is different from the conventional "X" shaped telescopic structure because the cross structure is not hinged at the middle crossing point.

As shown in fig. 1 to 6c, in the self-balancing linkage mechanism of the present invention, all the connecting members are simultaneously stretched and simultaneously contracted when being subjected to an external force. Such as: when external thrust is applied to the connecting frame, the first connecting rod, the second connecting rod and the third connecting rod act simultaneously to achieve contraction of the connecting rod mechanism. When external pulling force is applied to the connecting frame, the first connecting rod, the second connecting rod and the third connecting rod act simultaneously to realize the extension of the connecting rod mechanism. The angle between the connection parts is changed by the magnitude of the external force applied to the connection frame, thereby realizing the extension and contraction of the link mechanism.

The self-balancing link mechanism has self-balancing property, the link mechanism can realize contraction and expansion by applying small pushing force or pulling force on the connecting frame, the counterweight device synchronously approaches to the upright post when the link mechanism contracts, and the counterweight device synchronously leaves away from the upright post when the link mechanism expands, so that the gravity center offset generated by the expansion of the link mechanism is balanced, and the self-balancing property of the link mechanism is realized.

As such, the telescopic efficiency of the link mechanism of the present invention is greatly improved over the efficiency of the conventional X-shaped telescopic structure with a hinged middle part. And the self-balancing link mechanism has the advantages of few used parts, high connection strength, strong stability, high safety, simple maintenance and low cost.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.