Inverted jacking support mechanism

Abstract

The inverted jacking support mechanism comprises a cross beam and bases, connecting plates are connected to the left side and the right side of the lower surface of the cross beam through bolts, oil cylinder pin shafts are installed on one sides of the interiors of the two connecting plates in a penetrating mode, and guide columns are connected to the upper surfaces of the two bases through bolts; jacking oil cylinders are installed on the upper surfaces of the two bases through bolts, the tops of the guide columns are sleeved with guide sleeves, and heightening piers are connected to the lower surfaces of the cross beams through bolts. A baffle is arranged on the heightening pier below the cross beam, and a connecting pin shaft is connected to the interior of the guide sleeve in a penetrating mode. According to the upside-down mounting jacking support mechanism, the upside-down mounting jacking support mechanism is driven by the jacking oil cylinder to complete lifting upside-down mounting work of a beam piece in a beam storage area, meanwhile, the stability in the whole upside-down mounting process can be guaranteed through the arranged guide columns and guide sleeves, and therefore operation of the beam piece from a beam transporting vehicle to a beam storage area cushion pier and from the beam storage area cushion pier to a bridge crane is achieved; the structure is simple and easy to use, and the cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting mechanisms, in particular to an inverted lifting support mechanism. Background Technique

[0002] When the bridge girder erection machine erects girders, a tire beam transporter is required to transport the girder slices from the precast girder factory to the beam storage area at the bridge erection operation site. Special equipment is needed to invert the girder slices onto the precast beam storage piers in the beam storage area, and then the beam transporter can carry out the next round of beam transportation operation. When the bridge girder erection machine needs to erect girders, the inversion equipment in the beam storage area first transfers the girder slices on the precast piers in the beam storage area to the tire beam transporter, and then the tire beam transporter transports the girder slices to under the bridge girder erection machine, and then the bridge girder erection machine erects the girder slices.

[0003] Currently, a relatively common method is to preset an inverted gantry in the beam storage area to realize the inversion operation of the girder slices in the beam storage area. The inverted gantry equipment is relatively large, and the transportation, installation, debugging and other steps are complicated. Moreover, the cost of the equipment itself is relatively high, which has certain requirements for the actual operation ability and economic ability of the owner.

[0004] Therefore, we propose an inverted lifting support mechanism that can well solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide an inverted lifting support mechanism to solve the problems in the above background technique, that is, currently a relatively common method is to preset an inverted gantry in the beam storage area to realize the inversion operation of the girder slices in the beam storage area. The inverted gantry equipment is relatively large, and the transportation, installation, debugging and other steps are complicated. Moreover, the cost of the equipment itself is relatively high, which has certain requirements for the actual operation ability and economic ability of the owner.

[0006] To achieve the above purpose, the utility model provides the following technical solution: An inverted lifting support mechanism includes a cross beam and a base. On the left and right sides of the lower surface of the cross beam, connecting plates are bolted, and on one side of the inner parts of the two connecting plates, oil cylinder pins are installed through. On the upper surfaces of the two bases, guide columns are bolted;

[0007] On the upper surfaces of the two bases, lifting oil cylinders are bolted. Guide sleeves are sleeved on the tops of the guide columns, and heightening piers are bolted on the lower surfaces of the cross beam;

[0008] It further includes: There are baffles on the heightening piers below the cross beam. Connecting pins are installed through the inside of the guide sleeves, and limiting holes are equally spaced on both sides of the guide columns;

[0009] The tops of the lifting oil cylinders are fixedly connected to the bottoms of the connecting plates, and the tops of the four guide sleeves are fixedly connected to the bottoms of the two connecting plates.

[0010] Preferably, the connecting pin and the limiting hole are plug-in connected, the guide column and the guide sleeve are slidingly connected, and there is a certain gap between the guide sleeve and the guide column, which can ensure that the guide sleeve and the guide column can perform relatively smooth telescopic operations.

[0011] Preferably, the crossbeam has a certain rigidity to ensure that the crossbeam can support the beam piece to rise and fall under the drive of the jacking cylinder. The two jacking cylinders on the top of the two bases move synchronously, and the jacking cylinders provide power for the telescopic effect of the guide sleeve and the guide column.

[0012] Preferably, fixed plates are symmetrically installed on the upper surfaces of the two bases about the center point of the jacking cylinder, and a movable plate is connected to the side of the fixed plate, a telescopic column is hinged on the side of the movable plate away from one end of the fixed plate, and a suction cup is fixedly connected to the bottom of the telescopic column, driving racks are fixedly connected on both sides of the upper end of the jacking cylinder, and a driven gear is fixedly mounted on the shaft end of the movable plate.

[0013] Preferably, the movable plate is hinged on the side of the fixed plate, the driving rack is arranged in an "L" shape, and the driving rack and the driven gear are meshingly connected.

[0014] Preferably, a piston plate is provided inside the suction cup, and the piston plate is connected to the driven gear via a traction rope, and a return spring is installed between the top of the piston plate and the inner wall of the suction cup.

[0015] Preferably, the outer side of the piston plate is in sealed sliding connection with the inner wall of the suction cup, one end of the traction rope is fixed to the top of the piston plate, and the other end of the traction rope is wound around the shaft end of the driven gear.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the inverted jacking bracket mechanism drives the inverted jacking bracket mechanism to complete the lifting and inverting work of the beam piece in the beam storage area through the jacking oil cylinder, and at the same time, the provided guide column and guide sleeve can ensure the stability of the entire inverting process, thereby realizing the operation of the beam piece from the beam transport vehicle to the beam storage area pad pier, and the beam storage area pad pier to the bridge crane, and has the characteristics of simple structure, easy use, low cost, etc. The specific contents are as follows:

[0017] (1) The beam truck carrying the inverted jacking support mechanism arrives at the prefabricated pier position in the beam storage area. The on-site operator operates the jacking cylinder to lift to a certain height. The bottom surface of the guide column contacts the ground, and the crossbeam drives the heightening pier to leave the upper surface of the beam truck, preparing for the next step of inverted jacking.

[0018] Furthermore, the on-site operator operates the jacking cylinder to further lift the beam. As the jacking cylinder rises, the beam piece leaves the bridge sleeper support pad on the prefabricated pad pier in the beam storage area. Then the staff in the beam storage area immediately removes the bridge sleeper support pad on the prefabricated pad pier in the beam storage area to prepare for the beam piece to fall onto the turntable of the beam transport vehicle.

[0019] Furthermore, the jacking cylinder contracts, and the beam slab slowly descends with the cylinder. The cross beam under the beam slab lands on the turntable of the beam transporter. The jacking cylinder contracts further, causing the cross beam to slowly fall back onto the upper surface of the beam transporter. The bottom surface of the guide post separates from the ground, and the entire inverted jacking support mechanism lands on the beam transporter;

[0020] (2) When the jacking cylinder rises, it drives the driving rack to move upward, causing the driving rack to drive the meshing driven gear to rotate. At the same time, the two movable plates rotate outward and drive the suction cups to contact the ground, thereby increasing the supporting area of the mechanism and improving the stability during the inverted installation of the beam slab;

[0021] Further, when the jacking cylinder descends, the two movable plates rotate inward to reset and drive the suction cups to separate from the ground;

[0022] (3) As the jacking cylinder rises further, the driving rack continues to drive the driven gear to rotate. At the same time, the driven gear winds up the traction rope and pulls the piston plate to move upward within the suction cup, causing the suction cup to generate negative pressure and adsorb on the ground, further improving the stability of the mechanism. Description of the Drawings

[0023] Figure 1 is a schematic three-dimensional structure diagram of the present invention;

[0024] Figure 2 is a schematic front view structure diagram of the present invention;

[0025] Figure 3 is a schematic structure diagram of the movable plate rotating outward of the present invention;

[0026] Figure 4 is a schematic connection structure diagram of the rack and the driven gear of the present invention;

[0027] Figure 5 is a schematic three-dimensional structure diagram of the movable plate, the driven gear and the driving rack of the present invention;

[0028] Figure 6 is of the present invention Figure 3 enlarged structure diagram at position A.

[0029] In the figure: 1, cross beam; 2, guide sleeve; 3, guide post; 4, high pier; 5, jacking cylinder; 6, connecting pin shaft; 7, cylinder pin shaft; 8, base; 9, fixed plate; 10, movable plate; 11, driven gear; 12, traction rope; 13, telescopic column; 14, suction cup; 15, piston plate; 16, return spring; 17, driving rack. Detailed Embodiments

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] Please refer to Figures 1 - 6 , the present invention provides the following technical solution: an inverted jacking support mechanism;

[0032] Embodiment 1: In order to solve the problem in the prior art that at present, a relatively large number of inverted gantry cranes are preset in the beam storage area to realize the inverted operation of beam slabs in the beam storage area. The inverted gantry crane equipment is relatively large, and the steps of transportation, installation, debugging, etc. are complicated. Moreover, the cost of the equipment itself is relatively high, which has certain requirements for the actual operation ability and economic ability of the owner. Therefore, the following solution is disclosed. Specifically, refer to Figures 1 - 3 As shown, it includes a cross beam 1 and a base 8. Connecting plates are bolted to the left and right sides of the lower surface of the cross beam 1, and oil cylinder pins 7 are installed through one side of the two connecting plates. Guide columns 3 are bolted to the upper surfaces of the two bases 8; Jacking oil cylinders 5 are bolted to the upper surfaces of the two bases 8. The cross beam 1 has a certain rigidity to ensure that the cross beam 1 can carry the beam slab to rise and fall under the drive of the jacking oil cylinders 5. The two jacking oil cylinders 5 at the tops of the two bases 8 move synchronously, and the jacking oil cylinders 5 provide power for the telescopic action of the guide sleeves 2 and the guide columns 3. The tops of the guide columns 3 are sleeved with guide sleeves 2. Heightening piers 4 are bolted to the lower surface of the cross beam 1;

[0033] It further includes: the heightening pier 4 below the cross beam 1 has a baffle. A connecting pin 6 is connected through the inside of the guide sleeve 2. Limit holes are equidistantly opened on both sides of the guide column 3. The connecting pin 6 is inserted and connected with the limit holes. The guide column 3 and the guide sleeve 2 are slidably connected, and there is a certain gap between the guide sleeve 2 and the guide column 3, which can ensure that the guide sleeve 2 and the guide column 3 can perform relatively smooth telescopic operations; The tops of the jacking oil cylinders 5 are fixedly connected to the bottoms of the connecting plates. The tops of the four guide sleeves 2 are fixedly connected to the bottoms of the two connecting plates;

[0034] The beam vehicle carries the inverted lifting support mechanism to the position of the precast cushion pier in the beam storage area. The on-site operator operates the lifting oil cylinder 5 to lift to a certain height. The lower bottom surface of the guide column 3 contacts the ground, and the cross beam 1 drives the heightening pier 4 to leave the upper surface of the beam transport vehicle, preparing for the next inverted lifting. Then the on-site operator operates the lifting oil cylinder 5 to lift further. The beam slab leaves the bridge sleeper support on the precast cushion pier in the beam storage area as the lifting oil cylinder 5 rises. Then the staff in the beam storage area immediately removes the bridge sleeper support on the precast cushion pier in the beam storage area, preparing for the beam slab to fall onto the turntable of the beam transport vehicle. After that, the lifting oil cylinder 5 contracts, and the beam slab slowly descends with the oil cylinder. The cross beam 1 under the beam slab falls onto the turntable of the beam transport vehicle. The lifting oil cylinder 5 contracts further, causing the cross beam 1 to slowly fall back onto the upper surface of the beam transport vehicle. The lower bottom surface of the guide column 3 leaves the contact with the ground. Then the whole inverted lifting support mechanism falls onto the beam transport vehicle. The beam slab has completed the transportation and inversion work in the beam storage area. The beam transport vehicle leaves the beam storage area and the tail of the Kaixiang bridge erecting machine to assist the bridge erecting machine to complete the bridge erecting operation.

[0035] Embodiment 2: Different from Embodiment 1, in this embodiment, the movable plate 10 is used to drive the suction cup 14 to contact the ground, thereby increasing the support area of the entire inverted lifting support mechanism and improving the stability during the beam slab inversion process. Specifically, refer to Figures 3 - 6 As shown, on the upper surfaces of the two bases 8, fixing plates 9 are symmetrically installed about the center point of the lifting oil cylinder 5. The side surface of the fixing plate 9 is connected with a movable plate 10. The side surface of the end of the movable plate 10 away from the fixing plate 9 is hinged with a telescopic column 13, and the bottom of the telescopic column 13 is fixedly connected with a suction cup 14. On both sides of the upper end of the lifting oil cylinder 5, driving racks 17 are fixedly connected. A driven gear 11 is sleeved and fixed on the shaft end of the movable plate 10. The movable plate 10 is hinged on the side surface of the fixing plate 9. The driving rack 17 is arranged in an "L" shape, and the driving rack 17 is meshed with the driven gear 11;

[0036] When the lifting oil cylinder 5 rises, it will drive the driving rack 17 to move upward, and the driving rack 17 will drive the meshed driven gear 11 to rotate. At the same time, the two movable plates 10 rotate outward and drive the suction cup 14 to contact the ground, thereby increasing the support area of the entire inverted lifting support mechanism and improving the stability during the beam slab inversion process. Then when the lifting oil cylinder 5 descends, the two movable plates 10 rotate inward to reset and drive the suction cup 14 to separate from the ground.

[0037] Embodiment 3: Different from Embodiment 2, in this embodiment, the suction cup 14 is used to adsorb on the ground, which can further improve the stability of the entire inverted lifting support mechanism. Specifically, refer to Figures 3 - 6As shown, a piston plate 15 is arranged inside the suction cup 14, and the piston plate 15 is connected to the driven gear 11 by a traction rope 12. A return spring 16 is installed between the top of the piston plate 15 and the inner wall of the suction cup 14. The outer side of the piston plate 15 is in sealed sliding connection with the inner wall of the suction cup 14. One end of the traction rope 12 is fixed to the top of the piston plate 15, and the other end of the traction rope 12 is wound around the shaft end of the driven gear 11;

[0038] As the jacking oil cylinder 5 further lifts, the driving rack 17 continues to drive the driven gear 11 to rotate. At the same time, the driven gear 11 winds up the traction rope 12 and pulls the piston plate 15 to move upward in the suction cup 14, causing the suction cup 14 to generate negative pressure and adsorb on the ground, further improving the stability of the entire inverted jacking support mechanism. When the driving rack 17 drives the driven gear 11 to rotate in the reverse direction, the driven gear 11 relaxes the traction rope 12, causing the piston plate 15 to reset under the elastic force of the return spring 16 and the suction cup 14 to no longer adsorb on the ground.

[0039] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0040] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An inverted jacking support mechanism, comprising a crossbeam (1) and a base (8), wherein the left and right sides of the lower surface of the crossbeam (1) are bolted to connecting plates, and a cylinder pin (7) is installed through one side of the two connecting plates, and the upper surfaces of the two bases (8) are bolted to guide pillars (3); The upper surfaces of the two bases (8) are both bolted with a lifting cylinder (5), the top of the guide column (3) is sleeved with a guide sleeve (2), and the lower surface of the crossbeam (1) is bolted with a heightening pier (4); It is characterized in that Also includes: The heightened pier (4) below the crossbeam (1) has a baffle, a connecting pin (6) is connected through the interior of the guide sleeve (2), and limiting holes are provided at equal intervals on both sides of the guide column (3); The top of the lifting cylinder (5) is fixedly connected to the bottom of the connecting plate, and the tops of the four guide sleeves (2) are fixedly connected to the bottoms of the two connecting plates.

2. The inverted lifting bracket mechanism according to claim 1, characterized in that: The connecting pin (6) and the limiting hole are plug-in connected, the guide column (3) and the guide sleeve (2) are slidably connected, and there is a certain gap between the guide sleeve (2) and the guide column (3), which can ensure that the guide sleeve (2) and the guide column (3) can perform relatively smooth telescopic operation.

3. The inverted lifting bracket mechanism according to claim 1, characterized in that: The cross beam (1) has a certain rigidity, ensuring that the cross beam (1) can support the beam plate to rise and fall under the drive of the lifting cylinder (5). The two lifting cylinders (5) on the top of the two bases (8) move synchronously, and the lifting cylinders (5) provide power for the extension and retraction of the guide sleeve (2) and the guide column (3).

4. The inverted lifting bracket mechanism according to claim 1, characterized in that: A fixed plate (9) is symmetrically mounted on the upper surfaces of the two bases (8) about the center point of the lifting cylinder (5), and a movable plate (10) is connected to the side of the fixed plate (9), a telescopic column (13) is hingedly connected to the side of the movable plate (10) away from the fixed plate (9), and a suction cup (14) is fixedly connected to the bottom of the telescopic column (13), both sides of the upper end of the lifting cylinder (5) are fixedly connected to a driving rack (17), and a driven gear (11) is sleeved and fixedly mounted on the shaft end of the movable plate (10).

5. The inverted lifting bracket mechanism according to claim 4, characterized in that: The movable plate (10) is hinged on the side of the fixed plate (9), the driving rack (17) is arranged in an "L" shape, and the driving rack (17) and the driven gear (11) are meshingly connected.

6. The inverted lifting bracket mechanism according to claim 4, characterized in that: A piston plate (15) is arranged inside the suction cup (14), and the piston plate (15) is connected to the driven gear (11) via a traction rope (12), and a return spring (16) is installed between the top of the piston plate (15) and the inner wall of the suction cup (14).

7. The inverted lifting bracket mechanism according to claim 6, characterized in that: The outer side of the piston plate (15) and the inner wall of the suction cup (14) are sealed and slidably connected, one end of the traction rope (12) is fixed to the top of the piston plate (15), and the other end of the traction rope (12) is wound around the shaft end of the driven gear (11).

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