阅读说明：本技术 一种平转式开启桥用双侧单液压缸驱动装置 (Flat rotation type opening bridge is with two side single hydraulic cylinder drive arrangement ) 是由 李梦如 田顺钰 陈哲 胡金忠 孙波 于睿坤 于 2021-06-29 设计创作，主要内容包括：本发明涉及一种平转式开启桥用双侧单液压缸驱动装置,包括回转支承,两个液压缸和液压控制油路,回转支承安装在桥活动跨和桥墩底座之间,用以支承桥活动跨重量及满足桥活动跨的平转运动,液压控制油路用来控制液压缸推动速度和推动力,以满足桥活动跨转动过程中的运动条件要求,液压缸推杆一端与桥活动跨铰接,液压缸缸筒一端与桥墩底座铰接,液压控制油路驱动液压缸推杆做直线运动,从而实现桥活动跨的旋转,即开启桥的开闭；两个液压缸分别在对角象限布置,以回转支承的中心轴线与液压缸的安装平面交点中心对称,通过液压油路控制实现同步驱动。与现有技术相比,本发明具有减小回转支承损耗且可靠性高,受力平稳,节省空间等优点。(The invention relates to a bilateral single-hydraulic-cylinder driving device for a horizontally-rotating type opening bridge, which comprises a slewing bearing, two hydraulic cylinders and a hydraulic control oil circuit, wherein the slewing bearing is arranged between a bridge movable span and a pier base and is used for supporting the weight of the bridge movable span and meeting the horizontally-rotating motion of the bridge movable span; the two hydraulic cylinders are respectively arranged in opposite angle quadrants, are centrosymmetric by the intersection point of the central axis of the slewing bearing and the mounting plane of the hydraulic cylinders, and are controlled by a hydraulic oil circuit to realize synchronous driving. Compared with the prior art, the invention has the advantages of reducing the loss of the slewing bearing, along with high reliability, stable stress, space saving and the like.)

1. The utility model provides a flat rotation type opens bridge and uses two single hydraulic cylinder drive arrangement in side, its characterized in that, including the bridge activity stride (1), pier base (2), install the bridge activity stride (1) with between pier base (2), be used for supporting the bridge activity stride (1) weight and satisfy the bridge activity stride (1) the flat rotary support (3) of flat rotation motion, be used for realizing the bridge activity stride (1) rotatory pneumatic cylinder (4) to and be used for driving the hydraulic control oil circuit that push rod (41) of pneumatic cylinder (4) are linear motion, the push rod (41) place tip of pneumatic cylinder (4) with the bridge activity strides (1) articulated, the cylinder barrel (42) place tip of pneumatic cylinder (4) with pier base (2) articulated.

2. The double-sided single-hydraulic-cylinder driving device for the horizontally-rotating type opening bridge according to claim 1, wherein the number of the hydraulic cylinders (4) is two, the two hydraulic cylinders (4) are completely the same in size and structure, and the two hydraulic cylinders (4) are controlled by hydraulic oil paths to realize synchronous driving.

3. The bilateral single-hydraulic-cylinder driving device for the horizontal rotation type opening bridge according to claim 2 is characterized in that when the driving device is used for the horizontal rotation type opening bridge, two hydraulic cylinders (4) are respectively installed on the pier base (2), one end of a push rod (41) of each hydraulic cylinder (4) is hinged with the movable bridge span (1), one end of a cylinder barrel (42) of each hydraulic cylinder (4) is hinged with the pier base (2), and the two hydraulic cylinders (4) are arranged in a diagonal quadrant mode and are in central symmetry with the intersection point of the central axis of the rotary support (3) and the installation plane of the hydraulic cylinder (4).

4. The bilateral single-hydraulic cylinder driving device for the flat-turn type opening bridge according to claim 3, wherein a hinge point between the cylinder (42) of each hydraulic cylinder (4) and the pier base (2) is arranged at one side of the cylinder (42) with the rod cavity and close to the direction of the push rod (41), and the movable bridge span (1) is provided with a convex structure for being hinged with the push rod (41) of each hydraulic cylinder (4).

5. The double-sided single-cylinder drive for a horizontally-rotating opening bridge according to claim 4, characterized in that the protruding structure is provided on the plane of the bridge platform (1) facing the slewing bearing (3).

6. The double-sided single-cylinder drive for a swing-open bridge according to claim 5, characterized in that the protruding structure is set in the middle position of the plane of the bridge fly span (1) facing the slewing bearing (3).

7. The double-sided single-hydraulic cylinder driving apparatus for a horizontally-rotating type opening bridge according to claim 6, wherein the protrusion structure employs a fixing pin.

Technical Field

The invention relates to the technical field of opening bridge driving devices, in particular to a double-side single hydraulic cylinder driving device for a horizontal rotation type opening bridge.

Background

An open bridge is a bridge in which the bridge span structure can move or rotate, and more specifically, a bridge in which the whole or a part of the bridge body can move to meet a certain requirement. The open bridge is generally constructed to meet the requirements of ground river crossing and water surface navigation at the same time. On the water surface of rivers that many boats and ships need navigation, because the technical problem that is difficult to overcome, fixed bridge can not be through infinitely elevating, build on navigation headroom, consequently need the motion of bridge span structure to guarantee the realization of navigation. The opening bridge driving device is a device for opening and closing the opening bridge, and different driving devices can directly influence the performance of the opening bridge.

At present, most of the flat-turning type opening bridges adopt a traditional mechanical opening method, namely, a power source is an electric motor, after a speed reducer reaches required force and speed, the force is synchronously transmitted to two pinions, and the pinions drive a large-gear-ring-shaped slewing bearing to rotate, so that the flat-turning motion of a bridge movable span is met.

Disclosure of Invention

The present invention aims to overcome the above-mentioned drawbacks of the prior art and to provide a double-sided single-cylinder driving device for a horizontally-rotating type opening bridge.

The purpose of the invention can be realized by the following technical scheme:

a double-side single hydraulic cylinder driving device for a horizontally-rotating type opening bridge comprises a bridge movable span, a bridge pier base, a rotary support, a hydraulic cylinder and a hydraulic control oil way, wherein the rotary support is arranged between the bridge movable span and the bridge pier base and used for supporting the weight of the bridge movable span and meeting the horizontally-rotating motion of the bridge movable span, the rotary hydraulic cylinder is used for realizing the horizontally-rotating motion of the bridge movable span, the hydraulic control oil way is used for driving a push rod of the hydraulic cylinder to do linear motion, the end part of the push rod of the hydraulic cylinder is hinged with the bridge movable span, and the end part of a cylinder barrel of the hydraulic cylinder is hinged with the bridge pier base.

The hydraulic cylinders are two in number, the size and the structure of the two hydraulic cylinders are completely the same, and the two hydraulic cylinders are controlled by a hydraulic oil circuit to realize synchronous driving.

When the driving device is used for opening a bridge in a horizontal rotation mode, the two hydraulic cylinders are respectively installed on the pier base, one end of a push rod of each hydraulic cylinder is hinged with the bridge movable span, one end of a cylinder barrel of each hydraulic cylinder is hinged with the pier base, and the two hydraulic cylinders are arranged in a diagonal quadrant mode and are in central symmetry with the intersection point of the central axis of the slewing bearing and the installation plane of the hydraulic cylinders.

Furthermore, the hinged point of the cylinder barrel of each hydraulic cylinder and the pier base is arranged on one side of the cylinder barrel with a rod cavity and close to the direction of the push rod, and the bridge is movably provided with a protruding structure in a spanning mode, wherein the protruding structure is used for being hinged with the push rod of each hydraulic cylinder.

Further, the convex structure is arranged on a plane of the movable span of the bridge facing the slewing bearing.

Further, the convex structure is set at a plane middle position of the bridge movable span facing the slewing bearing.

Further, the protruding structure adopts a fixing pin.

Compared with the prior art, the double-side single hydraulic cylinder driving device for the horizontal rotation type opening bridge at least has the following beneficial effects:

1) the device has the advantages of simple structure, stepless speed regulation, quick start, high reliability, stable stress and space saving.

2) The two hydraulic cylinders are arranged in a central symmetry mode, the parts are completely the same, only the mounting positions of the hydraulic cylinders are different, radial force generated by the hydraulic cylinders in the opening and closing process of the movable span of the drive axle is offset, and load borne by the slewing bearing is reduced.

3) When cylinder one end of pneumatic cylinder was articulated with the pier base, the pin joint of selecting had pole chamber one side and was close to the push rod direction at the cylinder, and in the motion process of the push rod of pneumatic cylinder, the cylinder can rotate around the pin joint, can avoid the push rod of pneumatic cylinder and slewing bearing's interference, further reduces the load that slewing bearing receives, improves the force stability.

Drawings

FIG. 1 is a schematic structural diagram of a double-sided single-hydraulic cylinder driving device for a horizontally-rotating type opening bridge in a closed state in which a bridge moving span is 0 degree in an embodiment;

FIG. 2 is a schematic diagram of a side view of a dual-side single-cylinder driving device for a horizontally-rotated open bridge with a closed bridge span of 0 degree according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a double-sided single-hydraulic cylinder driving device for a horizontally-rotated open bridge in an open state in which the bridge active span is 45 degrees in the embodiment;

FIG. 4 is a schematic structural diagram of a double-sided single-hydraulic cylinder driving device for a horizontally-rotated open bridge in an open state in which the bridge movable span is 90 degrees in the embodiment;

the reference numbers in the figures indicate:

1. the bridge is movably spanned; 2. a pier base; 3. a slewing bearing; 4. a hydraulic cylinder; 41. a push rod; 42. a cylinder barrel.

Detailed Description

The invention is described in detail below with reference to the figures and specific embodiments. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.

Examples

The invention relates to a double-side single hydraulic cylinder driving device for a horizontal rotation type opening bridge, which adopts a central symmetrical arrangement form of double hydraulic cylinders and is suitable for a double-cantilever movable span horizontal rotation type opening bridge. The opening and closing of the movable bridge span requires that two hydraulic cylinders are respectively arranged in opposite angle quadrants, the two hydraulic cylinders are synchronously driven to realize the opening and closing of the movable bridge span by controlling a hydraulic oil circuit, the parts adopted by the installation are completely the same, and only the installation positions of the hydraulic cylinders are different.

Specifically, as shown in fig. 1, the double-sided single hydraulic cylinder driving device for a horizontally-rotating open bridge includes a bridge movable span 1, a pier base 2, a slewing bearing 3, a hydraulic cylinder 4, and a hydraulic control oil passage (not shown in the figure). The slewing bearing 3 is arranged between the bridge movable span 1 and the pier base 2 and is used for supporting the weight of the bridge movable span 1 and meeting the requirement of the flat-turning motion of the bridge movable span 1. The hydraulic control oil circuit is used for controlling the pushing speed and the pushing force of the hydraulic cylinder 4 so as to meet the requirement of the movement condition of the bridge movable span 1 in the rotating process. The hydraulic cylinders 4 are two, the size and the structure of the two hydraulic cylinders 4 are completely the same, the two hydraulic cylinders 4 are synchronously driven through hydraulic oil circuit control, one end of a push rod of each hydraulic cylinder 4 is hinged to the bridge movable span 1, one end of a cylinder barrel of each hydraulic cylinder 4 is hinged to the bridge pier base 2, and the hydraulic control oil circuit drives the push rod of each hydraulic cylinder 4 to do linear motion, so that the bridge movable span 1 is rotated, namely, the flat rotary bridge is opened and closed.

In fig. 1 to 4, AC and BD form four quadrants with the center of the slewing bearing 3 as the center.

As shown in fig. 2, when the hydraulic cylinder driving device of the present invention is used for a double-cantilever movable span pivoting type open bridge, when one end of the cylinder 42 of the hydraulic cylinder 4 is hinged to the abutment base 2 during the arrangement of the hydraulic cylinder 4, the selected hinge point is located at the rod cavity side of the cylinder 42 and is close to the direction of the push rod 41, and during the movement of the push rod 41 of the hydraulic cylinder 4, the cylinder 42 can rotate around the hinge point, so as to avoid the interference between the push rod 41 of the hydraulic cylinder 4 and the pivoting support 3. When one end of a push rod 41 of the hydraulic cylinder 4 is hinged with the movable bridge span 1, the push rod can be directly hinged with a convex structure of the movable bridge span 1 below the movable bridge span 1 (the plane of the movable bridge span 1 facing the slewing bearing 3).

Further, the protruding structure may adopt a fixed pin pre-embedded below the bridge movable span 1, and the fixed pin cooperates with the push rod 41 of the hydraulic cylinder 4 to form a hinged form, and the set position of the fixed pin is preferably the middle position of the width of the bridge movable span 1.

As shown in fig. 3 and 4, when the hydraulic cylinder driving device is used for horizontally opening a bridge with a double-cantilever movable span, the movable span of the bridge needs to be driven together in a central symmetrical arrangement mode of double hydraulic cylinders, so that the opening and closing functions of the bridge are realized. Namely, the two hydraulic cylinders 4 are arranged in a diagonal quadrant manner, are centrosymmetric with the intersection point of the central axis of the slewing bearing 3 and the plane where the hydraulic cylinders 4 are installed, and are driven together at the same pushing speed.

The device has the advantages of simple structure, stepless speed regulation, quick start, high reliability, stable stress and space saving. The two hydraulic cylinders are arranged in a central symmetry mode, the parts are completely the same, only the mounting positions of the hydraulic cylinders are different, radial force generated by the hydraulic cylinders in the opening and closing process of the movable span of the drive axle is offset, and load borne by the slewing bearing is reduced.

While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and those skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.