Beam falling jack

Abstract

The utility model relates to the technical field of constructional engineering, in particular to a beam falling jack. The beam falling jack comprises a main body which comprises a top cap capable of moving in the gravity direction; the limiting assembly is arranged on the top cap and comprises at least one pair of limiting pieces, the pair of limiting pieces are arranged on the two opposite sides of the top cap respectively, the sides, away from the top cap, of the limiting pieces are provided with bending parts bent towards the limiting pieces on the opposite sides, a limiting cavity is formed between the bending parts and the top cap, and the cushion block flanges are arranged in the limiting cavity; and a fixing piece for fixing the flange of the cushion block is arranged on the limiting piece. The limiting pieces are arranged on the two opposite sides of the top cap, the limiting cavity is formed between the bending part and the top cap, the cushion block flange is arranged in the limiting cavity, the bending part and the top cap are matched to limit the cushion block, the fixing pieces on the limiting pieces can fix the cushion block flange in the limiting cavity, and therefore the problem that the top cap cannot be firmly connected with the cushion block is solved; the strength of the beam falling support is improved, and the safety performance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering, in particular to a beam dropping jack. Background Art

[0002] At present, there are more and more bridge demolition projects in China. At present, the blasting method has limitations in domestic bridge demolition, and it is necessary to explore factors such as different bridge types and surrounding environments. The non-blasting method can take into account the characteristics of bridge demolition itself and is safe and reliable.

[0003] When non-explosive demolition methods are used for bridges with serious defects, multiple steel structure pads are usually stacked into two brackets to support the beam. In order to facilitate the lowering of the beam, a jack is installed at the bottom of the bracket on one side. In this way, the pads on the top of the two brackets can be alternately removed by the lifting and lowering of the jack to achieve the lowering of the beam.

[0004] However, the top cap of the existing jack cannot be firmly connected to the pad, so that the beam drop bracket assembled therefrom has low strength, is prone to tipping and tilting, and has low safety. Utility Model Content

[0005] Therefore, the technical problem to be solved by the utility model is that the top cap part of the existing jack cannot be firmly connected to the pad, so that the strength of the assembled beam support is low, it is easy to tip over and tilt, and the safety is low, thereby providing a beam dropping jack.

[0006] In order to solve the above problems, the utility model provides a beam-dropping jack, comprising:

[0007] A main body, the main body comprising a top cap movable along a gravity direction;

[0008] A limiting assembly is arranged on the top cap, and the limiting assembly includes at least one pair of limiting members, and the pair of limiting members are respectively arranged on two opposite sides of the top cap, and the side of the limiting member away from the top cap has a bent portion bent toward the limiting member on the opposite side, and a limiting cavity is constructed between the bent portion and the top cap, and a pad flange is arranged in the limiting cavity, and a fixing member for fixing the pad flange is arranged on the limiting member.

[0009] Furthermore, the top cap is also provided with an adjustment component, which is located on the side where the limit piece is located. The adjustment component includes a guide rod, which is perpendicular to the direction of gravity. One end of the guide rod is connected to the side of the top cap. A sliding member is provided on the side of the limit piece away from the bending portion. The limit piece is arranged on the guide rod through the sliding member so that the limit piece and the guide rod can be slidably matched. The limit piece is suitable for relative movement along the guide direction of the guide rod, approaching or moving away from the top cap.

[0010] Furthermore, the fixing member has an external thread, passes through the bending portion and is threadedly connected to the bending portion, and one end of the fixing member is suitable for abutting against the flange of the cushion block.

[0011] Furthermore, an elastic gasket is provided at the end of the fixing member abutting against the flange of the cushion block.

[0012] Furthermore, one end of the guide rod is provided with an external thread, the side surface of the top cap has a threaded hole, and the guide rod is threadedly matched with the side surface of the top cap.

[0013] Furthermore, the top cap is also provided with an adjustment component, which includes a guide rod, which is perpendicular to the direction of gravity and passes through the top cap. A sliding member is provided on the side of the limiter away from the bending portion. The limiter is arranged on the guide rod through the sliding member so that the limiter and the guide rod can be slidably matched. The limiter is suitable for relative movement along the guide direction of the guide rod, approaching or moving away from the top cap.

[0014] Furthermore, the main body also includes a push rod, one end of which is fixedly connected to the top cap, and an indication structure is provided on the outer peripheral surface of the push rod.

[0015] Furthermore, a limiting portion is provided at the end of the guide rod away from the top cap.

[0016] Furthermore, a gasket is provided on the end surface where the top cap cooperates with the cushion block.

[0017] Furthermore, a counterweight structure is sleeved on the outer peripheral surface of the main body.

[0018] The utility model has the following advantages:

[0019] The utility model discloses a beam-dropping jack, in which limiting pieces are arranged on two opposite sides of a top cap, a limiting cavity is constructed between a bent portion and the top cap, a pad flange is arranged in the limiting cavity, the bent portion cooperates with the top cap to limit the pad, and a fixing piece on the limiting piece can fix the pad flange in the limiting cavity, thereby solving the problem in the prior art that the top cap cannot be firmly connected to the pad, improving the strength of the beam-dropping bracket, and improving the safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 Schematic diagram of the beam-dropping jack in the embodiment of the utility model Figure 1 ;

[0022] Figure 2 Schematic diagram of the beam-dropping jack in the embodiment of the utility model Figure 2 ;

[0023] Figure 3 Schematic diagram of the top rod in the embodiment of the utility model Figure 1 ;

[0024] Figure 4 Schematic diagram of the top rod in the embodiment of the utility model Figure 2 ;

[0025] Description of reference numerals:

[0026] 1. Main body; 2. Top cap; 3. Limiting part; 4. Bending part; 5. Fixing part; 6. Guide rod; 7. Sliding part; 8. Elastic gasket; 9. Top rod; 10. Indicating structure; 11. Limiting part; 12. Gasket; 13. Counterweight structure. DETAILED DESCRIPTION

[0027] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0031] like Figures 1 to 3 As shown, this embodiment discloses a beam-dropping jack, comprising: a main body 1 and a limiting assembly. The main body 1 comprises a top cap 2 movable along the direction of gravity. The limiting assembly is arranged on the top cap 2, and the limiting assembly comprises at least one pair of limiting members 3, and the pair of limiting members 3 are respectively arranged on two opposite sides of the top cap 2, and the side of the limiting member 3 away from the top cap 2 has a bending portion 4 bent toward the limiting member 3 on the opposite side, and a limiting cavity is constructed between the bending portion 4 and the top cap 2, and the pad flange is arranged in the limiting cavity, and a fixing member 5 for fixing the pad flange is arranged on the limiting member 3.

[0032] Specifically, the pad is a cut I-beam, and a plurality of I-beams are stacked and fixed to form a beam support. In this embodiment, the pad at the bottom of the beam support is placed on the top cap 2. Figure 2 In the embodiment, a pair of limiting members 3 are respectively located on the left and right sides of the top cap 2, and the upper side of the limiting member 3 has a bending portion 4 bent toward the other limiting member 3. In the present embodiment, the bending angle of the bending portion 4 is 90°. In other optional embodiments, the bending angle of the bending portion 4 may be 89° or 91° or other different angles. The gap between the bending portion 4 and the top cap 2 is configured as a limiting cavity, and the pad flange may be located in the limiting cavity. The bending portion 4 and the top cap 2 cooperate with each other to limit the pad to prevent the pad from falling out. A fixing member 5 is provided on the limiting member 3, and the fixing member 5 fixes the pad flange, thereby fixing the pad on the top cap 2.

[0033] In other optional embodiments, Figure 2 A plurality of pairs of stoppers 3 may be provided on the left and right sides of the top cap 2 , and at least one pair of stoppers 3 may also be provided on the front and rear sides of the top cap 2 .

[0034] Furthermore, the top cap 2 is also provided with an adjustment component, which is located on the side where the limit member 3 is located. The adjustment component includes a guide rod 6, which is perpendicular to the direction of gravity. One end of the guide rod 6 is connected to the side of the top cap 2. A sliding member 7 is provided on the side of the limit member 3 away from the bending portion 4. The limit member 3 is arranged on the guide rod 6 through the sliding member 7 so that the limit member 3 and the guide rod 6 can slide together. The limit member 3 is suitable for relative movement along the guide direction of the guide rod 6, approaching or moving away from the top cap 2.

[0035] Specifically, Figures 1 to 3As shown, one end of the guide rod 6 is fixedly connected to the side of the top cap 2, and the limiter 3 is sleeved on the guide rod 6 through a sliding member 7 arranged on the lower side. The sliding member 7 is a cylindrical structure, and the lower side of the limiter 3 is fixedly connected to the outer surface of the sliding member 7. The limiter 3 can move relatively along the guide direction of the guide rod 6 through the sliding member 7, approaching or moving away from the top cap 2, so that the distance between the limiter 3 and the top cap 2 can be adjusted, and then the pads of different sizes can be adapted, which improves practicality. In this embodiment, the sliding member 7 has a limiting structure (not shown), which can limit the sliding member 7 so that the limiter 3 is fixed at a certain position of the guide rod 6. The limiting structure can be a bolt or a buckle.

[0036] Furthermore, in the present embodiment, one end of the guide rod 6 is provided with an external thread, the side surface of the top cap 2 is provided with a threaded hole, and the guide rod 6 is threadedly matched with the side surface of the top cap 2 .

[0037] In other optional embodiments, Figure 4 As shown, the top cap 2 is also provided with an adjustment assembly, which includes a guide rod 6, which is perpendicular to the direction of gravity and passes through the top cap 2. A sliding member 7 is provided on the side of the stopper 3 away from the bending portion 4. The stopper 3 is arranged on the guide rod 6 through the sliding member 7 so that the stopper 3 and the guide rod 6 are slidably matched. The stopper 3 is suitable for relative movement along the guide direction of the guide rod 6, approaching or moving away from the top cap 2. The guide rod 6 passes through the top cap 2 so that the two ends of the guide rod 6 are respectively slidably connected with a pair of stoppers 3.

[0038] Furthermore, the fixing member 5 has an external thread, passes through the bending portion 4 and is threadedly connected to the bending portion 4, and one end of the fixing member 5 is suitable for abutting against the flange of the cushion block.

[0039] Specifically, Figure 2 and Figure 3 As shown, in this embodiment, the fixing member 5 is a bolt, and a threaded hole is opened on the bending part 4. The fixing member 5 can be inserted into the threaded hole and one end of the fixing member 5 is extended into the limiting cavity. The fixing member 5 is threadedly matched with the bending part 4. The fixing member 5 is rotated so that the end of the fixing member 5 extending into the limiting cavity abuts against the flange of the cushion block, thereby fixing the cushion block.

[0040] Further, such as Figure 1 and Figure 3 As shown, an elastic gasket 8 is provided at the end of the fixing member 5 abutting against the flange of the cushion block. Preferably, in this embodiment, the elastic gasket 8 is a rubber gasket. In other optional embodiments, the elastic gasket 8 is a silicone gasket, etc. The elastic gasket 8 can protect the cushion block from being damaged by excessive concentrated stress, and at the same time, it can also prevent the fixing member 5 from slipping in the locked state, causing deformation or even damage of the fixing member 5, and can extend the service life of the fixing member 5.

[0041] Further, such as Figure 1As shown, the main body 1 also includes a push rod 9, one end of which is fixedly connected to the top cap 2, and an indication structure 10 is provided on the outer peripheral surface of the push rod 9. The push rod 9 can be raised and lowered along the direction of gravity, and the top cap 2 is fixedly connected to the push rod 9, and when the push rod 9 is raised or lowered, the top cap 2 will be driven to be raised or lowered. In this embodiment, the indication structure 10 is a scale ruler, and the staff can conveniently read the lifting height by observing the scale ruler, thereby realizing accurate lifting.

[0042] Further, such as Figure 1 As shown, a limiting portion 11 is provided at the end of the guide rod 6 away from the top cap 2 , and the limiting portion 11 can prevent the sliding member 7 from falling off the guide rod 6 when sliding along the guide rod 6 .

[0043] Furthermore, the end surface where the top cap 2 and the cushion block cooperate is provided with a gasket 12. Preferably, in this embodiment, the gasket 12 is a rubber gasket, and the provision of the gasket 12 can not only protect the top cap 2, but also lock the cushion block through the fixing member 5 after the gasket 12 is compressed and deformed by pressure, so that the connection between the top cap 2 and the cushion block is more firm, thereby improving the construction safety.

[0044] Furthermore, a counterweight structure 13 is sleeved on the outer circumference of the main body 1. In this embodiment, the main body 1 is a barrel-shaped structure, the counterweight structure 13 matches the main body 1, and the counterweight structure 13 is sleeved on the outer circumference of the counterweight structure 13, thereby increasing the weight of the main body 1. A base is provided at the lower end of the main body 1, and the lower end surface of the counterweight structure 13 is in contact with the upper end surface of the base. The setting of the counterweight structure 13 makes the main body 1 more stable and firm, and the ability of the main body 1 to resist lateral stress is greatly enhanced, and it will not be skewed or even tipped over due to lateral stress, thereby improving the safety of the beam drop construction.

[0045] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A beam-dropping jack, characterized in that: include: A main body (1), the main body (1) comprising a top cap (2) movable along the direction of gravity; A limiting assembly is arranged on the top cap (2), and the limiting assembly includes at least one pair of limiting members (3), wherein the pair of limiting members (3) are respectively arranged on two opposite sides of the top cap (2), and the side of the limiting member (3) away from the top cap (2) has a bent portion (4) bent toward the limiting member (3) on the opposite side, and a limiting cavity is constructed between the bent portion (4) and the top cap (2), and a pad flange is arranged in the limiting cavity, and a fixing member (5) for fixing the pad flange is arranged on the limiting member (3).

2. The beam-dropping jack according to claim 1, characterized in that: The top cap (2) is also provided with an adjustment component, which is located on the side where the limiter (3) is located. The adjustment component includes a guide rod (6), which is perpendicular to the direction of gravity. One end of the guide rod (6) is connected to the side of the top cap (2). A sliding member (7) is provided on the side of the limiter (3) away from the bending portion (4). The limiter (3) is arranged on the guide rod (6) through the sliding member (7) so that the limiter (3) and the guide rod (6) can be slidably matched. The limiter (3) is suitable for relative movement along the guide direction of the guide rod (6) to approach or move away from the top cap (2).

3. The beam-dropping jack according to claim 1, characterized in that: The fixing member (5) has an external thread, the fixing member (5) passes through the bending portion (4) and is threadedly connected to the bending portion (4), and one end of the fixing member (5) is suitable for abutting against the flange of the cushion block.

4. The beam-dropping jack according to claim 3, characterized in that: An elastic gasket (8) is provided at the end of the fixing member (5) abutting against the flange of the cushion block.

5. The beam-dropping jack according to claim 2, characterized in that: One end of the guide rod (6) is provided with an external thread, the side surface of the top cap (2) has a threaded hole, and the guide rod (6) is threadedly matched with the side surface of the top cap (2).

6. The beam-dropping jack according to claim 1, characterized in that: The top cap (2) is also provided with an adjustment component, which includes a guide rod (6), the guide rod (6) is perpendicular to the direction of gravity, the guide rod (6) passes through the top cap (2), a sliding member (7) is provided on the side of the limit member (3) away from the bending portion (4), the limit member (3) is arranged on the guide rod (6) through the sliding member (7) so that the limit member (3) and the guide rod (6) are slidably matched, and the limit member (3) is suitable for relative movement along the guide direction of the guide rod (6), approaching or moving away from the top cap (2).

7. The beam-dropping jack according to claim 1, characterized in that: The main body (1) further comprises a push rod (9), one end of which is fixedly connected to the top cap (2), and an indication structure (10) is provided on the outer peripheral surface of the push rod (9).

8. The beam-dropping jack according to claim 5 or 6, characterized in that: A limiting portion (11) is provided at the end of the guide rod (6) away from the top cap (2).

9. The beam dropping jack according to any one of claims 1 to 7, characterized in that: The end surface of the top cap (2) that cooperates with the cushion block is provided with a gasket (12).

10. The beam-dropping jack according to claim 1, characterized in that: The outer peripheral surface of the main body (1) is sleeved with a counterweight structure (13).

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