A double-horizontal electric boom system that can be folded into a small diameter

Abstract

The present invention discloses a double-horizontal-arm electric boom system that can be folded into a small-caliber, and relates to the technical field of power transmission tower construction equipment. The boom system includes a center frame (1) whose bottom is supported on a turntable (4), and two booms (3) whose top is hinged to the top of the center frame (1), whose bottom is in close contact with the center frame, and which can be flipped upward 90 degrees to a vertical state for anchoring under the action of oil cylinders (2) on both sides. The present invention can greatly reduce the overall horizontal cross-section of the boom after folding, greatly reduce the central opening of the power transmission tower, and facilitate the construction of the power transmission tower; at the same time, since the initial installation height of the boom system of the present invention is low, the cables between the horizontal arms on both sides and the central tower are omitted, which can simplify installation and facilitate operation; in addition, after the boom is folded to a vertical state, the present invention can be rigidly anchored by a pin shaft, so that it can be safely lowered into the central opening of the tower.

Description

Technical Field

[0001] The invention relates to the technical field of power transmission iron tower construction equipment, in particular to a double-flat-arm power holding rod boom system which can be folded into a small-caliber. Background Art

[0002] The demand for the construction of the national power grid has brought the construction of UHV lines to a climax. For example, the "West-to-East Power Transmission" uses UHV power transmission. During the construction process, high-voltage power transmission lines inevitably have to cross large rivers, mountain valleys, straits and harbors. These geographical conditions make the transmission line span relatively large. In addition, many rivers or straits have navigation requirements, so the long-span towers are required to be designed to be tall and large. The construction of these tall towers requires the use of safe and efficient power poles. At present, there are mainly two types of safe and efficient power poles: double horizontal arm type and double rocker arm type. After the construction of the tower is completed, the power pole needs to retract the arms on both sides to a vertical position and then descend from the opening in the middle of the tower. The existing double-flat-arm (with a regular triangle cross section) and double-rocker-arm (with a square cross section) power poles both have a relatively high central tower (with a square cross section) in the middle of the top, which has two obvious defects: the first defect is that when the two side booms are received in a vertical position, the two side booms and the central tower are combined together, and the overall horizontal section is composed of three sections - two triangular or square boom cross sections plus a square central tower cross section. The overall horizontal section area is relatively large, and the corresponding opening in the middle of the tower needs to be relatively large to allow the pole to fall smoothly; the second defect is that due to the high central tower, the initial installation height is relatively high, and the two side flat arms and the central tower need to be connected by cables installed at high altitudes, which is more troublesome to install. Summary of the invention

[0003] The purpose of the present invention is to provide a double-flat-arm electric boom system that can be folded into a small diameter to address the deficiencies in the above-mentioned prior art. The present invention can greatly reduce the overall horizontal cross-section of the folded boom, greatly reduce the central opening of the power transmission tower, and facilitate the construction of the power transmission tower; at the same time, since the initial installation height of the boom system of the present invention is low, the cables between the flat arms on both sides and the central tower are omitted, which can simplify installation and facilitate operation; in addition, after the boom is folded to a vertical state, the present invention can be rigidly anchored by a pin shaft, so that it can be safely lowered into the central opening of the tower.

[0004] The purpose of the present invention can be achieved by the following technical measures:

[0005] The present invention discloses a double-horizontal-arm electric boom system that can be folded into a small-caliber, including a center frame (for supporting and installing the boom) whose bottom is supported on a rotating table, a top hinged to the top of the center frame, a bottom in close contact with the center frame, and two booms that can be flipped upwards by 90 degrees to a vertical state for anchoring under the action of oil cylinders on both sides (the cross section of the boom is an inverted triangle, and the height of the center frame designed in the present invention is not large, that is, it does not exceed the top surface of the boom in a horizontal working state. When the present invention needs to fold the two booms to a vertical state and anchor them for safe descent, the overall horizontal cross section of the folded boom is composed of two The cross section of the triangular boom plus the width of the anchor plate, and the width of the anchor plate is sufficient to ensure that the two booms do not interfere with each other after being folded, that is, the width of the anchor plate is very small. Therefore, the overall horizontal cross section of the present invention when folded is significantly reduced compared with the overall horizontal cross section of the conventional central frame when the boom is folded (composed of two triangular or two square boom cross sections plus a square central tower cross section), which is conducive to reducing the central opening and construction of the power transmission tower); the lower half of the central frame is a quadrangular prism, and the upper half is a quadrangular platform, and the top ends of the oblique uprights in the quadrangular platform are connected by two horizontal pull plates arranged in front and behind ( Cooperating with the pull head, it is used to install the hinge pin shaft), an anchor plate is vertically fixed above the center of each horizontal pull plate (cooperating with the anchor ear plate, it is used to install the anchor pin shaft; at the same time, the width of the anchor plate is very small compared with the cross section of the central tower frame, which can greatly reduce the overall horizontal cross section when folded in the present invention), the two have the same thickness direction and are in an inverted T-shaped structure (compact structure, space saving); the arm frame is a truss structure with an inverted triangular cross section formed by two upper Xuan bars and a box beam through a web bar (because the tips of the two triangular arm frame cross sections in the overall horizontal cross section when folded in the present invention face outward, so that The present invention rotates to the diagonal direction of the central opening of the power transmission tower and then descends, which can further reduce the overall horizontal cross-section after the arm is folded, thereby reducing the central opening of the power transmission tower, which is beneficial to the construction of the power transmission tower). Pull heads are fixed to the inner ends of the two upper black rods (connected and matched with the horizontal pull plate for installing the hinge pin shaft), and anchor ear plates are fixed to the roots of the upper surfaces of the two upper black rods (matched with the anchor plate for installing the anchor pin shaft); hinge pin holes are provided on the horizontal pull plate and the pull heads (for installing the hinge pin shaft), and anchor pin holes are provided on the anchor plate and the anchor ear plates (for installing the anchor pin shaft).

[0006] There are four cylinders in the present invention (the cylinders are used to support the boom when the boom is in a horizontal working state; when the boom needs to be folded, the cylinders provide flipping power for the boom). One end of the cylinder is hinged to the top side of the corresponding column in the quadrangular column of the center frame, and the other end is hinged to the inner end root of the upper mysterious rod.

[0007] The length of the upper black rod described in the present invention is greater than that of the box beam (matching the large and small cross-section of the quadrangular platform), the upper black rod is made of steel pipe, and the box beam is a box beam structure welded by steel plates and has its own track.

[0008] The design principle of the present invention is as follows:

[0009] The height of the center frame designed in the present invention is not large, that is, it does not exceed the top surface of the boom when it is in a horizontal working state, and the cross section of the boom is an inverted triangle. In this way, when the two arms, which are hinged at the top and the top of the center frame, and are in contact with the center frame at the bottom and can be flipped upward 90 degrees to a vertical state for anchoring under the action of the oil cylinders on both sides, are folded into a vertical state, the overall horizontal cross-section after the two arms and the center frame are combined together is the two triangular arm cross-sections plus the width of the anchor plate, and the width of the anchor plate only needs to ensure that the two arms do not interfere with each other after being folded, that is, the width of the anchor plate is very small. Therefore, the overall horizontal cross-section of the present invention when folded is significantly reduced compared with the overall horizontal cross-section of the traditional center frame with a higher arm in the folded state (composed of two triangular or two square arm cross-sections plus a square center tower cross-section); in addition, the tips of the two triangular arm cross-sections in the overall horizontal cross-section when folded in the present invention face outward, so that the present invention can be rotated to the diagonal direction of the central opening of the power transmission tower before being lowered, so that the overall horizontal cross-section after the arms are folded can be further reduced, thereby reducing the central opening of the power transmission tower, which is beneficial to the construction of the power transmission tower. At the same time, since the height of the center frame is not large, the initial installation height of the boom system is low, and the cable between the horizontal arms on both sides and the center tower frame is omitted, which can simplify the installation and facilitate the operation. In addition, after the boom is folded to a vertical state, the present invention can be rigidly anchored by simply inserting the pin shaft into the anchor pin hole provided on the anchor plate and the anchor ear plate. In addition, after the boom is folded to a vertical state, the present invention can be rigidly anchored by the pin shaft, so that it can be safely lowered in the center opening of the iron tower.

[0010] The beneficial technical effects of the present invention are as follows:

[0011] The present invention can greatly reduce the overall horizontal cross-section of the boom after it is folded, greatly reduce the central opening of the power transmission tower, and is beneficial to the construction of the power transmission tower; at the same time, since the initial installation height of the boom system of the present invention is low, the cables between the horizontal arms on both sides and the central tower are omitted, which can simplify the installation and facilitate the operation; in addition, after the boom is folded to a vertical state, the present invention can be rigidly anchored by a pin shaft, so that it can be safely lowered into the central opening of the tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the state of the present invention when in use.

[0013] Figure 2 yes Figure 1 A local enlarged schematic diagram of point A in the middle.

[0014] Figure 3 It is a schematic diagram of the present invention in a folded state.

[0015] Figure 4 yes Figure 3 BB cross-section diagram in.

[0016] Explanation of the part numbers in the figure: 1. Center frame, 1-1. Quadrangular column, 1-2. Quadrangular platform, 1-2-1. Oblique vertical rod, 1-2-2. Horizontal pull plate, 1-2-3. Anchor plate, 2. Cylinder, 3. Boom, 3-1. Upper rod, 3-1-1. Pull head, 3-1-2. Anchor ear plate, 3-2. Box beam, 3-3. Web member, 4. Turntable, 5. Hinge pin hole, 6. Anchor pin hole, C. Larger opening size, C', smaller opening size. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the accompanying drawings:

[0018] like Figure 1 to Figure 4As shown, a double-horizontal-arm electric boom system of the present invention that can be folded into a small-caliber includes a center frame 1 (for supporting and installing a boom 3) whose bottom is supported on a turntable 4, and two booms 3 whose top is hinged to the top of the center frame 1 and whose bottom is in close contact with the center frame, and which can be flipped upward 90 degrees to a vertical state for anchoring under the action of the oil cylinders 2 on both sides (the height of the center frame designed in the present invention is not large, that is, it does not exceed the top surface of the boom in the horizontal working state. When the present invention needs to fold the two booms to a vertical state and anchor them for safe descent, the overall horizontal cross-section of the present invention after folding is the cross-section of the two triangular booms plus the width of the anchor plate. The width of the anchor plate only needs to be ensured. It is sufficient to ensure that the two arms do not interfere with each other after being folded, that is, the width of the anchor plate is very small. Therefore, the overall horizontal cross-section of the present invention when folded is compared with the overall horizontal cross-section of the conventional central frame when the arms are relatively high (composed of two triangular or two square arm cross-sections plus a square central tower cross-section). The cross-section itself has been significantly reduced, which is beneficial to reducing the central opening and construction of the power transmission tower); the lower half of the central frame 1 is a quadrangular prism 1-1, and the upper half is a quadrangular platform 1-2. The top ends of the oblique uprights 1-2-1 in the quadrangular platform 1-2 are connected by two horizontal pull plates 1-2-2 arranged at the front and rear (cooperating with the pull head 3-1-1 for installing the hinge pin). At each horizontal pull plate 1-2 -2 is vertically fixed with an anchor plate 1-2-3 (cooperating with the anchor ear plate 3-1-2 for installing the anchor pin shaft; at the same time, the width of the anchor plate is very small compared with the cross section of the central tower frame, which can greatly reduce the overall horizontal cross section of the present invention when folded), the two have the same thickness direction and are in an inverted T-shaped structure (compact structure, space saving); the arm 3 is a truss structure with an inverted triangular cross section composed of two upper Xuan bars 3-1 and a box beam 3-2 through a web bar 3-3 (because the tips of the two triangular arm cross sections in the overall horizontal cross section when folded in the present invention face outward, so the present invention can be rotated to the diagonal direction of the central opening of the power transmission iron tower before Lowering, which can further reduce the overall horizontal cross-section of the boom after folding, thereby reducing the central opening of the power transmission tower, which is beneficial to the construction of the power transmission tower), a pull head 3-1-1 is fixed to the inner end of the two upper Xuan rods 3-1 (connected with the horizontal pull plate 1-2-2 for installing the hinge pin shaft), and an anchor ear plate 3-1-2 is fixed to the root of the upper surface of the two upper Xuan rods 3-1 (cooperating with the anchor plate 1-2-3 for installing the anchor pin shaft); hinge pin holes 5 (for installing the hinge pin shaft) are provided on the horizontal pull plate 1-2-2 and the pull head 3-1-1, and anchor pin holes 6 (for installing the anchor pin shaft) are provided on the anchor plate 1-2-3 and the anchor ear plate 3-1-2.

[0019] There are four cylinders 2 in the present invention (the cylinders 2 are used to support the boom 3 when the boom 3 is in a horizontal working state; when the boom 3 needs to be retracted, the cylinders 2 provide flipping power for the boom 3). One end of the cylinders 2 is hinged to the top side of the corresponding column in the quadrangular column 1-1 of the center frame, and the other end is hinged to the inner end root of the upper rod 3-1.

[0020] The length of the upper black rod 3-1 described in the present invention is greater than the length of the box beam 3-2 (matching the cross-section of the four-sided platform 1-2 which is larger at the top and smaller at the bottom). The upper black rod 3-1 is made of steel pipe, and the box beam 3-2 is a box beam structure welded by steel plates and has its own track.

[0021] The specific use of the present invention is as follows:

[0022] First, assemble the present invention to the working state according to the above structural description and the attached drawings, that is, the two side arms 3 are in a horizontal state. When the present invention is performing the high-altitude lifting task, the position is gradually raised as the power transmission tower rises. When the construction of the power transmission tower is completed and the present invention needs to be safely landed on the ground, it is only necessary to open the four oil cylinders 2 on both sides and extend them at the same time, driving the two side arms 3 to flip upward 90 degrees to a vertical state, and after the anchor pin holes 6 on the anchor plate 1-2-3 and the anchor ear plate 3-1-2 are aligned, the pin shaft can be inserted to perform rigid anchoring. Subsequently, the present invention is rotated to the diagonal direction of the central opening of the power transmission tower, so that it can be safely and stably descended along the central opening of the power transmission tower.

Claims

1. A double-horizontal-arm electric boom system that can be folded into a small-caliber, characterized in that: The arm support system comprises a center frame (1) whose bottom is supported on a rotating table (4), two arms (3) whose top is hinged to the top of the center frame (1), whose bottom is in close contact with the center frame, and which can be turned up 90 degrees to a vertical state for anchoring under the action of oil cylinders (2) on both sides; the lower half of the center frame (1) is a quadrangular column (1-1), and the upper half is a quadrangular platform (1-2), and the inclined vertical rod (1-2-1) in the quadrangular platform (1-2) is The top ends are connected by two transverse tie plates (1-2-2) arranged at the front and rear, and an anchor plate (1-2-3) is vertically fixed above the center of each transverse tie plate (1-2-2). The two have the same thickness direction and are in an inverted T-shaped structure. The arm frame (3) is a truss structure with an inverted triangular cross section, which is composed of two upper black bars (3-1) and a box beam (3-2) through a web bar (3-3). The inner ends of the two upper black bars (3-1) are fixed with a truss that is connected to the transverse tie plate (1-2-3). The pull plate (1-2-2) is connected and matched with the pull head (3-1-1) for installing the hinge pin shaft. Anchor ear plates (3-1-2) for installing the anchor pin shaft after matching with the anchor plate (1-2-3) are fixed at the root of the upper surface of the two upper rods (3-1); hinge pin holes (5) for installing the hinge pin shaft are provided on the horizontal pull plate (1-2-2) and the pull head (3-1-1), and the anchor plate (1-2-3) and the anchor ear plate (3-1-2) are provided. An anchor pin hole (6) for installing an anchor pin shaft is opened; there are four oil cylinders (2), one end of each oil cylinder (2) is hinged to the top side surface of the corresponding column in the quadrangular column (1-1) of the center frame, and the other end is hinged to the inner end root of the upper black rod (3-1); the length of the upper black rod (3-1) is greater than the length of the box beam (3-2), the upper black rod (3-1) is made of steel pipe, and the box beam (3-2) is a box beam structure welded by steel plates and has its own track.

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