Three-way hydraulic jack

Abstract

The utility model discloses a three-way hydraulic jack, which belongs to the technical field of bridge construction equipment and comprises a base, a pushing oil cylinder, a first sliding table, a jacking oil cylinder, a deviation rectifying oil cylinder, a second sliding table and a replacement buttress. The pushing oil cylinder is fixedly installed on the base, and the axis of the pushing oil cylinder is arranged along the X axis. The first sliding table is slidably connected with the base in the Y-axis direction, the jacking oil cylinder is fixedly installed on the first sliding table, and the axis of the jacking oil cylinder is arranged along the Z-axis. The deviation rectifying oil cylinder is fixedly installed on the base, the axis of the deviation rectifying oil cylinder is arranged along the Y axis, and the deviation rectifying oil cylinder is connected with the first sliding table. The second sliding table is in sliding connection with the base in the X-axis direction and located between the pushing oil cylinder and the jacking oil cylinder. The replacement buttress is fixedly installed on the second sliding table and connected with the telescopic end of the pushing oil cylinder. Compared with the prior art, the utility model has the advantages of simpler structural design, lower cost and higher stability, and can be applied in a scene without an additional support structure.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction equipment, in particular to a three-way hydraulic jack. Background Art

[0002] The three-way hydraulic jack is a common device for bridge construction, which is used to push a steel beam forward along a predetermined path and can adjust the steel beam in three directions of the X-axis, Y-axis, and Z-axis. The existing three-way hydraulic jack generally includes a base, a first oil cylinder, a second oil cylinder, and a third oil cylinder. The first oil cylinder is arranged along the X-axis, the second oil cylinder is arranged along the Z-axis, and the third oil cylinder is arranged along the Y-axis. The second oil cylinder is used to lift the steel beam to adjust the vertical position of the steel beam. The first oil cylinder and the third oil cylinder are respectively used to drive the second oil cylinder to move along the X-axis and Y-axis directions to adjust the horizontal position of the steel beam.

[0003] For example, a jack with a three-way displacement adjustment function proposed in the prior art CN 213326499 U, a three-way jack proposed in the prior art CN 214527861U, and a super-thin three-way adjustment jack proposed in CN 209442564U, etc., all belong to this type of structure.

[0004] In the above structure, since the second oil cylinder needs to take into account two directions of the X-axis and the Y-axis when moving horizontally, two sliding tables are required to cooperate, and the positions of the two sliding tables overlap. Therefore, the structural design is relatively complex, the cost is high, and the moving stability is poor. In addition, the existing three-way hydraulic jack pushes the steel beam through the second oil cylinder, and the second oil cylinder needs to perform lifting actions. When the second oil cylinder descends, an additional support structure (such as a bridge pier) must be used to support the steel beam, and the application range is limited to a certain extent. Summary of the Utility Model

[0005] The utility model provides a three-way hydraulic jack, which is provided with a replacement pier on the base. The replacement pier is driven by a pushing oil cylinder to move back and forth along the X-axis direction, and cooperates with the lifting movement of the lifting oil cylinder to realize the function of pushing the steel beam forward. Under the action of the deviation correction oil cylinder, the lifting oil cylinder moves along the Y-axis direction to realize the function of correcting the deviation of the steel beam in the Y-axis direction, avoiding the defects caused by the need to take into account two directions of the X-axis and the Y-axis when the oil cylinder arranged along the Z-axis moves horizontally. The structural design is simpler, the cost is lower, and it is more stable. In addition, through the cooperation of the replacement pier and the lifting oil cylinder, it can be applied in scenarios without additional support structures.

[0006] To achieve the above object, the technical solution adopted by the utility model is:

[0007] A three-way hydraulic jack, comprising a base, a pushing oil cylinder, a first sliding table, a lifting oil cylinder, a deviation rectifying oil cylinder, a second sliding table and a replacement pier; the pushing oil cylinder is fixedly installed on the base, and its axis is arranged along the X axis, the first sliding table is slidably connected with the base along the Y axis direction, the lifting oil cylinder is fixedly installed on the first sliding table, and its axis is arranged along the Z axis, the deviation rectifying oil cylinder is fixedly installed on the base, and its axis is arranged along the Y axis, the deviation rectifying oil cylinder is connected with the first sliding table; the second sliding table is slidably connected with the base along the X axis direction and is located between the pushing oil cylinder and the lifting oil cylinder, the replacement pier is fixedly installed on the second sliding table and is connected with the telescopic end of the pushing oil cylinder.

[0008] Further, the replacement pier includes two supporting feet and a pushing frame, the two supporting feet are symmetrically arranged on the second sliding table, the pushing frame is horizontally installed on the tops of the two supporting feet, the telescopic end of the pushing oil cylinder is located between the two supporting feet and is fixedly connected with the two supporting feet through a connecting plate.

[0009] Further, a lifting frame is arranged at the top of the lifting oil cylinder, and the top surface size of the lifting frame is the same as that of the pushing frame.

[0010] Further, the pushing frame is detachably connected with the two supporting feet through a plurality of first connecting pieces, and the lifting frame is detachably connected with the lifting oil cylinder through a plurality of second connecting pieces.

[0011] Further, both the first connecting piece and the second connecting piece are bolts.

[0012] Further, the number of the deviation rectifying oil cylinders is two, and the two deviation rectifying oil cylinders are symmetrically arranged on the opposite sides of the lifting oil cylinder.

[0013] Further, a first sliding groove is arranged on the base, the first sliding table is slidably connected with the first sliding groove, a second sliding groove is arranged on the base, and the second sliding table is slidably connected with the second sliding groove.

[0014] Further, the pushing capacity of the pushing oil cylinder is 400 - 800 kN, the stroke is 800 - 1200 mm, the lifting capacity of the lifting oil cylinder is 3000 - 3500 kN, the stroke is 200 - 300 mm, and the deviation rectifying capacity of the deviation rectifying oil cylinder is 800 - 1200 kN, the stroke is 80 - 120 mm.

[0015] Due to the adoption of the above technical solutions, the utility model has the following beneficial effects:

[0016] 1. The utility model is provided with a replacement pier on the base. The replacement pier is driven by a jacking oil cylinder to move back and forth along the X-axis direction, and in cooperation with the lifting movement of the lifting oil cylinder, the function of pushing the steel beam forward is realized. Under the action of the deviation correction oil cylinder, the lifting oil cylinder moves along the Y-axis direction, realizing the function of correcting the deviation of the steel beam in the Y-axis direction. Since the lifting oil cylinder only needs to move along the Y-axis direction in the horizontal direction, and the two sliding tables moving along the X-axis direction and the Y-axis direction are also independent of each other. Compared with the prior art that adjusts the oil cylinder in the Z-axis direction in two directions of the X-axis and the Y-axis, the structural design of the utility model is simpler, the cost is lower, and it is also more stable.

[0017] 2. The utility model cooperates with the replacement pier and the lifting oil cylinder, and can be applied in the scenario without an additional support structure. When the replacement pier needs to be reset, the lifting oil cylinder rises, and the steel beam is supported by the lifting oil cylinder. When the replacement pier needs to push the steel beam forward, the lifting oil cylinder descends, and the steel beam is supported by the replacement pier.

[0018] 3. The replacement pier and the lifting oil cylinder of the utility model are respectively provided with a jacking frame and a lifting frame, and the jacking frame and the lifting frame with appropriate sizes can be installed or replaced according to the actual situation to meet the construction requirements of different scenarios, having good practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional structural schematic diagram of a three-way hydraulic jack proposed by an embodiment of the utility model;

[0020] Figures 2 - 6 is a schematic diagram of a three-way hydraulic jack proposed by an embodiment of the utility model working for one stroke;

[0021] Among them, the labels in the drawings are: 1 - base, 2 - jacking oil cylinder, 3 - first sliding table, 4 - first chute, 5 - lifting oil cylinder, 6 - lifting frame, 7 - deviation correction oil cylinder, 8 - support foot, 9 - jacking frame, 10 - second sliding table, 11 - second chute, 12 - steel beam. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the utility model.

[0023] Embodiment

[0024] Such as Figure 1As shown in the figure, a three-way hydraulic jack includes a base 1, a pushing oil cylinder 2, a first sliding table 3, a jacking oil cylinder 5, a deviation rectifying oil cylinder 7, a second sliding table 10, and a replacement pier.

[0025] The pushing oil cylinder 2 is fixedly installed on the base 1, and its axis is arranged along the X-axis. The first sliding table 3 is slidably connected to the base 1 in the Y-axis direction. Specifically, a first sliding groove 4 is provided on the base 1, and the first sliding table 3 is slidably connected to the first sliding groove 4. The jacking oil cylinder 5 is fixedly installed on the first sliding table 3, and its axis is arranged along the Z-axis.

[0026] The deviation rectifying oil cylinder 7 is fixedly installed on the base 1, and its axis is arranged along the Y-axis. The deviation rectifying oil cylinder 7 is connected to the first sliding table 3. In this embodiment, the number of deviation rectifying oil cylinders 7 is two, and the two deviation rectifying oil cylinders 7 are symmetrically arranged on the opposite sides of the jacking oil cylinder 5.

[0027] The second sliding table 10 is slidably connected to the base 1 in the X-axis direction and is located between the pushing oil cylinder 2 and the jacking oil cylinder 5. The replacement pier is fixedly installed on the second sliding table 10 and is connected to the telescopic end of the pushing oil cylinder 2. Specifically, a second sliding groove 11 is provided on the base 1, and the second sliding table 10 is slidably connected to the second sliding groove 11.

[0028] Among them, the replacement pier includes two support feet 8 and a pushing frame 9. The two support feet 8 are symmetrically arranged on the second sliding table 10. The pushing frame 9 is horizontally installed on the tops of the two support feet 8. The telescopic end of the pushing oil cylinder 2 is located between the two support feet 8 and is fixedly connected to the two support feet 8 through a connecting plate, so as to accommodate part of the length of the pushing oil cylinder 2 in the replacement pier and reduce the space occupation.

[0029] A jacking frame 6 is provided at the top of the jacking oil cylinder 5, and the top surface size of the jacking frame 6 is the same as that of the pushing frame 9. The pushing frame 9 is detachably connected to the two support feet 8 through a plurality of first connecting members, and the jacking frame 6 is detachably connected to the jacking oil cylinder 5 through a plurality of second connecting members. In this embodiment, both the first connecting members and the second connecting members are bolts, which is convenient for disassembly and assembly.

[0030] The replacement pier and the jacking oil cylinder 5 of the present utility model are respectively provided with a pushing frame 9 and a jacking frame 6, and the pushing frame 9 and the jacking frame 6 with appropriate sizes can be installed or replaced according to actual situations to meet the construction requirements of different scenarios, and have good practicability.

[0031] Preferably, the pushing capacity of the pushing oil cylinder 2 is 400 - 800 kN, the stroke is 800 - 1200 mm, the jacking capacity of the jacking oil cylinder 5 is 3000 - 3500 kN, the stroke is 200 - 300 mm, and the rectifying capacity of the rectifying oil cylinder 7 is 800 - 1200 kN, the stroke is 80 - 120 mm. In this embodiment, the pushing capacity of the pushing oil cylinder 2 is 600 kN, the stroke is 1000 mm, the jacking capacity of the jacking oil cylinder 5 is 3200 kN, the stroke is 250 mm, and the rectifying capacity of the rectifying oil cylinder 7 is 1000 kN, the stroke is 100 mm.

[0032] As Figures 2 - 6 shown, the working process of the present utility model is as follows: 1. The equipment is installed in place, and the self-weight of the component is supported by the replacement pier; 2. The pushing oil cylinder 2 extends, and the component is pushed forward by one stroke; 3. The jacking oil cylinder 5 extends to lift the component, and the self-weight of the component is transferred to the jacking oil cylinder 5; 4. The pushing oil cylinder 2 retracts, and the replacement pier is pulled back to the starting position; 5. The jacking oil cylinder 5 retracts, and the self-weight of the component is transferred to the replacement pier, and one stroke is completed.

[0033] The present utility model is provided with a replacement pier on the base 1. The pushing oil cylinder 2 drives the replacement pier to move back and forth along the X-axis direction, and cooperates with the lifting movement of the jacking oil cylinder 5 to realize the function of pushing the steel beam 12 forward. Under the action of the rectifying oil cylinder 7, the jacking oil cylinder 5 moves along the Y-axis direction to realize the function of rectifying the steel beam 12 in the Y-axis direction.

[0034] Since the jacking oil cylinder 5 only needs to move along the Y-axis direction in the horizontal direction, and the two sliding tables moving along the X-axis direction and the Y-axis direction are also independent of each other. Compared with the prior art that adjusts the oil cylinder in the Z-axis direction in two directions of the X-axis and the Y-axis, the structural design of the present utility model is simpler, the cost is lower, and it is also more stable.

[0035] In addition, the present utility model cooperates with the replacement pier and the jacking oil cylinder 5, and can be applied in the scenario without an additional support structure. When the replacement pier needs to be reset, the jacking oil cylinder 5 rises, and the steel beam 12 is supported by the jacking oil cylinder 5. When the replacement pier needs to push the steel beam 12 forward, the jacking oil cylinder 5 descends, and the steel beam 12 is supported by the replacement pier.

[0036] The above description is a detailed description of the preferred feasible embodiment of the present utility model, but the embodiment is not used to limit the scope of the patent application of the present utility model. Any equivalent changes or modifications completed under the technical spirit disclosed by the present utility model shall fall within the scope of the patent covered by the present utility model.

Claims

1. A three-way hydraulic jack, comprising a base, a pushing oil cylinder, a first sliding table, a jacking oil cylinder and a deviation rectifying oil cylinder. The pushing oil cylinder is fixedly installed on the base, and its axis is arranged along the X-axis. The first sliding table is slidably connected to the base along the Y-axis direction. The jacking oil cylinder is fixedly installed on the first sliding table, and its axis is arranged along the Z-axis. The deviation rectifying oil cylinder is fixedly installed on the base, and its axis is arranged along the Y-axis. The deviation rectifying oil cylinder is connected to the first sliding table, and is characterized in that: It further includes a second sliding table and a replacement pier. The second sliding table is slidably connected to the base along the X-axis direction and is located between the jacking oil cylinder and the pushing oil cylinder. The replacement pier is fixedly installed on the second sliding table and is connected to the telescopic end of the pushing oil cylinder.

2. The three-way hydraulic jack according to claim 1, wherein The replacement pier includes two support feet and a pushing frame. The two support feet are symmetrically arranged on the second sliding table. The pushing frame is horizontally installed on the tops of the two support feet. The telescopic end of the pushing oil cylinder is located between the two support feet and is fixedly connected to the two support feet through a connecting plate.

3. The three-way hydraulic jack according to claim 2, characterized in that, A jacking frame is arranged on the top of the jacking oil cylinder, and the top surface size of the jacking frame is the same as that of the pushing frame.

4. The three-way hydraulic jack according to claim 3, wherein The pushing frame is detachably connected to the two support feet through a plurality of first connecting pieces, and the jacking frame is detachably connected to the jacking oil cylinder through a plurality of second connecting pieces.

5. The three-way hydraulic jack according to claim 4, characterized in that, Both the first connecting pieces and the second connecting pieces are bolts.

6. The three-way hydraulic jack according to claim 1, characterized in that, The number of the rectifying oil cylinders is two, and the two rectifying oil cylinders are symmetrically arranged on the opposite sides of the jacking oil cylinder.

7. A three-way hydraulic jack according to claim 1, characterized in that, A first sliding groove is arranged on the base, and the first sliding table is slidably connected to the first sliding groove. A second sliding groove is arranged on the base, and the second sliding table is slidably connected to the second sliding groove.

8. A three-way hydraulic jack according to claim 1, characterized in that, The pushing capacity of the pushing oil cylinder is 400 - 800 kN, and the stroke is 800 - 1200 mm. The jacking capacity of the jacking oil cylinder is 3000 - 3500 kN, and the stroke is 200 - 300 mm. The rectifying capacity of the rectifying oil cylinder is 800 - 1200 kN, and the stroke is 80 - 120 mm.

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