Large-weight bridge multi-span synchronous jacking device

Abstract

The utility model relates to the technical field of bridge jacking, in particular to a heavy-weight bridge multi-span synchronous jacking device which comprises a hydraulic cylinder, a plunger is installed at the upper end of the hydraulic cylinder, a middle sleeve is installed on the end side of the middle of the hydraulic cylinder, a middle hole is formed in the end wall of the middle sleeve in a penetrating mode, and the plunger is arranged in the middle hole. A middle rod is installed on the inner side of the middle hole, a base is arranged at the bottom of the hydraulic cylinder, a base hole is formed in the end wall of the base in a penetrating mode, a lower base and an upper base are installed on the inner side of the base hole, a base opening is formed in the lower base, a clamping column is installed on the inner side of the base opening, and connecting holes are formed in the end wall of the clamping column and the end wall of the lower base in a penetrating mode. And an upper screw rod is mounted at the upper end of the upper seat. The middle rod rotates and moves in the axis direction of the middle hole, the position of the middle rod is changed, the middle rod penetrates into a supporting face supported by the bottom of the hydraulic cylinder, such as the ground, the hydraulic cylinder is reinforced, and when the hydraulic cylinder is used, supporting is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge jacking, in particular to a multi-span synchronous jacking device for a heavy-weight bridge. Background Art

[0002] When a bridge is being built, the bridge parts will be processed, such as drilling. During the processing, the bridge will be lifted up. This jacking device is a hydraulic jack used to lift the bridge.

[0003] When lifting a bridge, multiple jacks are used to lift the bridge. The top of the jack pushes the end wall of the bridge, and the bottom of the jack is supported on the ground or other supporting surfaces. During the support, the bottom support of the jack cylinder is prone to insufficient stability. However, there is no positioning structure at the bottom of the cylinder of a general jack, which makes it impossible for the cylinder to be firmly positioned and used stably. Utility Model Content

[0004] The utility model aims to provide a multi-span synchronous jacking device for a heavy-weight bridge.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A multi-span synchronous jacking device for a heavy-weight bridge comprises a hydraulic cylinder, a plunger is installed at the upper end of the hydraulic cylinder, a middle sleeve is installed at the middle end side of the hydraulic cylinder, a middle hole is passed through the end wall of the middle sleeve, a middle rod is installed on the inner side of the middle hole, a base is arranged at the bottom of the hydraulic cylinder, a seat hole is passed through the end wall of the base, a lower seat and an upper seat are installed on the inner side of the seat hole, a seat opening is opened inside the lower seat, a clamping column is installed on the inner side of the seat opening, connecting holes are passed through the clamping column and the end wall of the lower seat, an upper screw is installed on the upper end of the upper seat, and a lower screw is installed on the lower end of the lower seat.

[0007] Preferably, the hydraulic cylinder and the middle sleeve are fixedly connected, and the middle sleeve is threadedly connected to the middle rod through the middle hole.

[0008] Preferably, the middle hole and the middle rod are distributed in a ring shape about the center of the middle sleeve.

[0009] Preferably, the hydraulic cylinder and the base are fixedly connected.

[0010] Preferably, the base is threadedly connected to the lower seat through the seat hole, and the lower seat is clamped to the clamping column through the seat opening.

[0011] Preferably, the upper seat and the upper screw rod are fixedly connected to each other, and the lower seat and the lower screw rod are fixedly connected to each other.

[0012] The utility model has at least the following beneficial effects:

[0013] 1. By rotating the middle rod, the middle rod moves along the axis of the middle hole, changing the position of the middle rod, so that the middle rod penetrates the supporting surface of the bottom support of the hydraulic cylinder, such as the ground, to reinforce the hydraulic cylinder and make the support more stable when the hydraulic cylinder is in use;

[0014] 2. Connect the lower seat through the seat hole thread. The seat mouth of the lower seat is used to clamp the clamping column. The clamping column and the lower seat are assembled and stored when the clamping column is idle. When in use, remove the clamping column from the lower seat, and then use the two ends of the steel wire to tie them to the connecting holes of the clamping column and the lower seat respectively to connect the clamping column and the lower seat. At this time, screw the upper seat into the ground or supporting surface supported by the cylinder body through the upper screw, and use the upper seat and steel wire to pull and straighten the lower seat to firmly position and limit the hydraulic cylinder so that it can be stably positioned for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 A schematic diagram of the present utility model;

[0017] Figure 2 for Figure 1 Schematic diagram of the base from top view;

[0018] Figure 3 for Figure 1 A top view of the middle set;

[0019] Figure 4 for Figure 1 Schematic diagram of the lower and upper seats.

[0020] In the figure: 1. Hydraulic cylinder; 2. Plunger; 3. Middle sleeve; 4. Middle hole; 5. Middle rod; 6. Base; 7. Seat hole; 8. Lower seat; 9. Seat mouth; 10. Clamping column; 11. Connecting hole; 12. Upper seat; 13. Lower screw; 14. Upper screw. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] See also Figure 1-4 The utility model provides a technical solution for a multi-span synchronous lifting device for a heavy-duty bridge:

[0023] Example 1:

[0024] like Figure 1-4 As shown, a multi-span synchronous jacking device for a heavy-weight bridge comprises a hydraulic cylinder 1, a plunger 2 is installed at the upper end of the hydraulic cylinder 1, a middle sleeve 3 is installed at the middle end side of the hydraulic cylinder 1, a middle hole 4 is passed through the end wall of the middle sleeve 3, a middle rod 5 is installed on the inner side of the middle hole 4, a base 6 is arranged at the bottom of the hydraulic cylinder 1, a seat hole 7 is passed through the end wall of the base 6, a lower seat 8 and an upper seat 12 are installed on the inner side of the seat hole 7, a seat opening 9 is opened inside the lower seat 8, a clamping column 10 is installed on the inner side of the seat opening 9, a connecting hole 11 is passed through the end wall of the clamping column 10 and the lower seat 8, an upper screw 14 is installed at the upper end of the upper seat 12, and a lower screw 13 is installed at the lower end of the lower seat 8.

[0025] Example 2:

[0026] Based on the first embodiment, Figure 1 and Figure 2 As shown, the hydraulic cylinder 1 and the middle sleeve 3 are fixedly connected, and the middle sleeve 3 is threadedly connected to the middle rod 5 through the middle hole 4. The middle hole 4 and the middle rod 5 are distributed in a ring shape about the center of the middle sleeve 3. The hydraulic cylinder 1 and the base 6 are fixedly connected. When the middle rod 5 rotates, the middle rod 5 moves along the axis of the middle hole 4, changing the position of the middle rod 5 so that the middle rod 5 penetrates the supporting surface of the bottom support of the hydraulic cylinder 1, such as the ground, to reinforce the hydraulic cylinder 1 and make the support more stable when the hydraulic cylinder 1 is in use.

[0027] Based on the first embodiment, Figure 3 and Figure 4 As shown, the base 6 is threadedly connected to the lower seat 8 through the seat hole 7, and the lower seat 8 is clamped with the clamping column 10 through the seat mouth 9. The upper seat 12 and the upper screw 14 are fixedly connected to the lower seat 8 and the lower screw 13 respectively. The lower seat 8 is threadedly connected through the seat hole 7. The seat mouth 9 of the lower seat 8 is used to clamp the clamping column 10, assemble the clamping column 10 and the lower seat 8, and store the clamping column 10 when idle. When in use, the clamping column 10 is removed from the lower seat 8, and then the two ends of the steel wire are respectively tied to the connecting holes 11 of the clamping column 10 and the lower seat 8 to connect the clamping column 10 and the lower seat 8. At this time, the upper seat 12 is screwed into the ground or supporting surface supported by the cylinder body through the upper screw 14, and the upper seat 12 and the steel wire are used to pull and straighten the lower seat 8 to firmly position and limit the hydraulic cylinder 1 so that it can be stably positioned for use.

[0028] Working principle: By rotating the middle rod 5, the middle rod 5 is displaced along the axial direction of the middle hole 4, changing the position of the middle rod 5, so that the middle rod 5 penetrates the supporting surface of the bottom support of the hydraulic cylinder 1, such as the ground, to reinforce the hydraulic cylinder 1, so that the support is more stable when the hydraulic cylinder 1 is in use, and the lower seat 8 is threadedly connected through the seat hole 7. The seat mouth 9 of the lower seat 8 is used to clamp the card column 10, assemble the card column 10 and the lower seat 8, and store the card column 10 when idle. When in use, remove the card column 10 from the lower seat 8, and then use the two ends of the steel wire to tie them to the connecting holes 11 of the card column 10 and the lower seat 8 respectively to connect the card column 10 and the lower seat 8. At this time, screw the upper seat 12 into the ground or supporting surface supported by the cylinder body through the upper screw 14, and use the upper seat 12 and the steel wire to pull and straighten the lower seat 8 to firmly position and limit the hydraulic cylinder 1, so that it can be stably positioned for use.

[0029] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed for the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-span synchronous lifting device for a heavy-weight bridge, comprising a hydraulic cylinder (1), characterized in that: The upper end of the hydraulic cylinder (1) is provided with a plunger (2), the middle end side of the hydraulic cylinder (1) is provided with a middle sleeve (3), the end wall of the middle sleeve (3) is provided with a middle hole (4), the inner side of the middle hole (4) is provided with a middle rod (5), the bottom of the hydraulic cylinder (1) is provided with a base (6), the end wall of the base (6) is provided with a seat hole (7), the inner side of the seat hole (7) is provided with a lower seat (8) and an upper seat (12), the interior of the lower seat (8) is provided with a seat opening (9), the inner side of the seat opening (9) is provided with a clamping column (10), the end wall of the clamping column (10) and the lower seat (8) are provided with a connecting hole (11), the upper end of the upper seat (12) is provided with an upper screw rod (14), and the lower end of the lower seat (8) is provided with a lower screw rod (13).

2. A multi-span synchronous jacking device for heavy-duty bridges according to claim 1, characterized in that: The hydraulic cylinder (1) and the middle sleeve (3) are fixedly connected, and the middle sleeve (3) is threadedly connected to the middle rod (5) through the middle hole (4).

3. The multi-span synchronous lifting device for a heavy-duty bridge according to claim 1 is characterized in that: The middle hole (4) and the middle rod (5) are both distributed in a ring shape about the center of the middle sleeve (3).

4. The multi-span synchronous lifting device for a heavy-duty bridge according to claim 1 is characterized in that: The hydraulic cylinder (1) and the base (6) are fixedly connected.

5. The multi-span synchronous lifting device for a heavy-duty bridge according to claim 1 is characterized in that: The base (6) is threadedly connected to the lower seat (8) through the seat hole (7), and the lower seat (8) is clamped to the clamping column (10) through the seat opening (9).

6. The multi-span synchronous lifting device for a heavy-duty bridge according to claim 1 is characterized in that: The upper seat (12) and the upper screw rod (14) are fixedly connected to each other, and the lower seat (8) and the lower screw rod (13) are fixedly connected to each other.

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