Auxiliary device for pushing, sliding and falling steel box girder

Abstract

The utility model relates to the technical field of bridge construction, discloses an auxiliary device for pushing, sliding and falling a steel box girder, and solves the problem that the pushing precision is influenced by impact force generated when the steel box girder is hoisted to pushing and sliding equipment. When the steel box girder is hoisted through the cushion block, the damping spring, the hydraulic cylinder and the hydraulic rod, the steel box girder is aligned to the upper portion of the cushion block and then gradually moves downwards, after the steel box girder makes contact with the cushion block, the damping spring absorbs most of energy firstly, and therefore impact force directly transmitted to the joist is reduced, and when the impact force exceeds the natural shock absorption capacity of the damping spring, the joist is lifted. The hydraulic cylinder and the hydraulic rod start to play a role, extra energy is absorbed by controlling the pressure of the hydraulic system, it is guaranteed that the steel box girder falls more softly, displacement caused by impact force is avoided, and precise abutting joint of pushing is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a steel box beam jacking and sliding beam-dropping auxiliary device. Background Art

[0002] The steel box girder jacking sliding beam drop auxiliary device is a mechanical device specially designed for the installation of steel box girders in bridge construction. It is designed to simplify and accurately control the positioning and installation of steel box girders during jacking construction.

[0003] The utility model with Chinese patent announcement number CN219772738U discloses a steel box girder push-sliding device, including a vertical jacking device, a horizontal longitudinal jacking device, a horizontal transverse deviation correction device, a sliding device, and a core bearing box of the equipment; the vertical jacking device includes a device bottom plate, a device top plate, and a vertical hydraulic jacking device, the vertical hydraulic jacking device is fixed on the device bottom plate, and the device top plate is fixed on the top of the vertical hydraulic jacking device; the sliding device includes a slotted slide plate, a longitudinal slide groove, and a transverse slide groove, and the slotted slide plate is provided with a longitudinal slide groove and a transverse slide groove; the longitudinal slide groove and the transverse slide groove are embedded with balls; the core bearing box of the equipment is arranged on the slotted slide plate; the horizontal longitudinal jacking device includes a longitudinal hydraulic jacking device and a jacking shaft, and one end of the jacking shaft is connected to the core bearing box; the horizontal transverse deviation correction device includes a baffle and a transverse deviation correction hydraulic jack. The utility model makes full use of balls to reduce the friction of the slide groove, the power required for jacking is small, it is safe and reliable, and the transverse position of the steel box girder can be accurately adjusted.

[0004] The above patented steel box girder jacking and sliding equipment solves the problem that during the jacking process, the steel box girder is prone to lateral deviation and needs further adjustment of its lateral position. However, when the steel box girder is hoisted onto the sliding equipment, a certain impact force will be generated, causing the steel box girder to deviate from the predetermined position when placed, increasing the difficulty of subsequent adjustments, affecting the precise docking of the jacking, and even requiring re-hoisting, delaying progress. Utility Model Content

[0005] The utility model aims to provide a steel box girder jacking sliding beam dropping auxiliary device, by adopting the device to work, thus solving the problem that the impact force generated when the existing steel box girder is hoisted to the jacking sliding equipment will affect the jacking accuracy.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a steel box girder jacking sliding beam-dropping auxiliary device, comprising a temporary platform, and a slide rail arranged on the upper surface of the temporary platform, the upper surface of the slide rail is slidably connected with a joist, and the upper surface of the joist is provided with a shock-absorbing component for reducing impact force;

[0007] The shock-absorbing assembly includes a mounting block threadedly connected to the inside of the supporting beam, a shock-absorbing spring arranged on the upper surface of the mounting block, and a cushion block arranged on the upper end of the shock-absorbing spring. A hydraulic cylinder is arranged at the bottom of the cushion block, a hydraulic rod is arranged at the bottom end of the hydraulic cylinder, a piston block is sleeved at the bottom end of the hydraulic rod, a movable groove is opened inside the mounting block, the piston block is movably connected to the inside of the movable groove, and the upper surface of the cushion block contacts the bottom of the steel box beam.

[0008] Furthermore, a protective block is arranged on the upper surface of the cushion block, and the protective block is a component made of nitrile rubber.

[0009] Furthermore, an O-ring is provided on the inner wall of the movable groove, and the outer surface of the hydraulic rod contacts the center of the O-ring.

[0010] Furthermore, a groove and a threaded hole are provided on the upper surface of the support beam, and one side of the mounting block is threadedly connected to the threaded hole through a bolt.

[0011] Furthermore, a shock-absorbing pad is arranged between the groove and the mounting block.

[0012] Furthermore, two groups of cushion blocks are provided, and connecting rods are provided between the two groups of cushion blocks, and a spring telescopic rod and a shock-absorbing spring are provided at the bottom of one group of cushion blocks.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] The utility model proposes a steel box girder jacking and sliding beam-dropping auxiliary device. In the prior art, the impact force generated when the steel box girder is hoisted to the jacking and sliding equipment will affect the jacking accuracy. However, the utility model uses a cushion block, a shock-absorbing spring, a hydraulic cylinder and a hydraulic rod. When the steel box girder is hoisted, it is first aligned above the cushion block and then gradually moved down. When the steel box girder contacts the cushion block, the shock-absorbing spring first absorbs most of the energy, thereby reducing the impact force directly transmitted to the supporting beam. When the impact force exceeds the natural shock-absorbing capacity of the shock-absorbing spring, the hydraulic cylinder and the hydraulic rod begin to play a role, and absorb additional energy by controlling the pressure of the hydraulic system, thereby ensuring that the steel box girder falls more gently, avoiding displacement caused by the impact force, and realizing precise docking of the jacking. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the connection between the shock absorbing assembly and the joist of the utility model;

[0017] Figure 3 It is a schematic diagram of the structure of part of the shock absorbing assembly of the utility model;

[0018] Figure 4It is a cross-sectional view of a part of the shock absorbing assembly of the utility model.

[0019] In the figure: 1. temporary platform; 2. slide rail; 3. support beam; 31. groove; 32. threaded hole; 4. shock-absorbing assembly; 41. mounting block; 411. moving groove; 42. shock-absorbing spring; 43. cushion block; 431. connecting rod; 432. spring telescopic rod; 44. hydraulic cylinder; 45. hydraulic rod; 46. piston block; 5. protection block; 6. O-ring; 7. shock-absorbing pad. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0021] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings.

[0022] Combination Figure 1 A steel box girder jacking and sliding beam-dropping auxiliary device comprises a temporary platform 1 and a slide rail 2 arranged on the upper surface of the temporary platform 1, the upper surface of the slide rail 2 is slidably connected with a support beam 3, and the upper surface of the support beam 3 is provided with a shock-absorbing component 4 for reducing impact force.

[0023] The utility model is further described below in conjunction with embodiments. Example 1

[0024] See also Figure 1-Figure 4 The shock absorbing assembly 4 includes a mounting block 41 threadedly connected to the inside of the joist 3, a shock absorbing spring 42 arranged on the upper surface of the mounting block 41, and a cushion block 43 arranged on the upper end of the shock absorbing spring 42. A hydraulic cylinder 44 is arranged at the bottom of the cushion block 43, a hydraulic rod 45 is arranged at the bottom end of the hydraulic cylinder 44, and a piston block 46 is sleeved at the bottom end of the hydraulic rod 45. A movable groove 411 is opened inside the mounting block 41, and the piston block 46 is movably connected to the inside of the movable groove 411. The upper surface of the cushion block 43 contacts the bottom of the steel box beam. When hoisting the steel box girder, first align it above the pad 43, and then gradually move it down. When the steel box girder contacts the pad 43, the shock-absorbing spring 42 first absorbs most of the energy, thereby reducing the impact force directly transmitted to the support beam 3. When the impact force exceeds the natural shock-absorbing capacity of the shock-absorbing spring 42, the hydraulic cylinder 44 and the hydraulic rod 45 begin to play a role, and by controlling the pressure of the hydraulic system, the additional energy is absorbed to ensure that the steel box girder falls more gently, avoid displacement caused by impact force, and achieve precise docking of the top push.

[0025] A protective block 5 is provided on the upper surface of the cushion block 43. The protective block 5 is a component made of nitrile rubber. The nitrile rubber has good wear resistance and elasticity, can effectively prevent scratches or damage caused by direct contact between metals, and prolong the service life of the equipment.

[0026] An O-ring 6 is disposed on the inner wall of the moving groove 411 , and the outer surface of the hydraulic rod 45 contacts the center of the O-ring 6 to form a seal to prevent leakage of hydraulic oil.

[0027] A groove 31 and a threaded hole 32 are formed on the upper surface of the support beam 3, and one side of the mounting block 41 is threadedly connected to the threaded hole 32 by a bolt, so that the shock absorbing assembly 4 is easy to disassemble as a whole for maintenance and replacement.

[0028] A shock-absorbing pad 7 is provided between the groove 31 and the mounting block 41 to ensure that the mounting block 41 is stably installed in the groove 31 and further absorb vibration.

[0029] Two groups of pads 43 are provided, and connecting rods 431 are provided between the two groups of pads 43. A spring telescopic rod 432 is provided at the bottom of one group of pads 43, and a shock-absorbing spring 42 is also provided, so as to achieve a more uniform load distribution. At the same time, the spring telescopic rod 432 can be extended and retracted accordingly, thereby reducing costs.

[0030] Specifically, when hoisting the steel box girder, first align it above the pad 43, and then gradually move it down. When the steel box girder contacts the pad 43, the shock-absorbing spring 42 first absorbs most of the energy, thereby reducing the impact force directly transmitted to the support beam 3. When the impact force exceeds the natural shock-absorbing capacity of the shock-absorbing spring 42, the hydraulic cylinder 44 and the hydraulic rod 45 begin to play a role, and by controlling the pressure of the hydraulic system, the additional energy is absorbed to ensure that the steel box girder falls more gently, avoid displacement caused by impact force, and achieve precise docking of the top push. Since the upper surface of the pad 43 is provided with a protective block 5, the protective block 5 is a component made of nitrile rubber, and thus can effectively prevent scratches or damage caused by direct contact between metals, thereby extending the service life of the equipment, and the pad 43 is provided with two groups, and a connection is provided between the two groups of pads 43. Rod 431, a spring telescopic rod 432 is provided at the bottom of one group of pads 43, and a shock-absorbing spring 42 is also provided, thereby achieving a more uniform load distribution, and the spring telescopic rod 432 can be extended and retracted accordingly, thereby reducing the cost. Because the inner wall of the movable groove 411 is provided with an O-ring 6, the outer surface of the hydraulic rod 45 contacts the center of the O-ring 6, thereby forming a seal to prevent hydraulic oil leakage. In addition, since the upper surface of the support beam 3 is provided with a groove 31 and a threaded hole 32, one side of the mounting block 41 is threadedly connected to the threaded hole 32 by a bolt, so that the shock-absorbing assembly 4 is easy to disassemble as a whole, maintain and replace, and a shock-absorbing pad 7 is provided between the groove 31 and the mounting block 41 to ensure that the mounting block 41 is stably installed in the groove 31 and further absorb vibration.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel box girder push-up sliding beam-dropping auxiliary device, comprising a temporary platform (1), and a slide rail (2) arranged on the upper surface of the temporary platform (1), characterized in that: The upper surface of the slide rail (2) is slidably connected to a support beam (3), and the upper surface of the support beam (3) is provided with a shock absorbing component (4) for reducing impact force; The shock absorbing assembly (4) comprises a mounting block (41) threadedly connected to the inside of the supporting beam (3), a shock absorbing spring (42) arranged on the upper surface of the mounting block (41), and a cushion block (43) arranged on the upper end of the shock absorbing spring (42); a hydraulic cylinder (44) is arranged at the bottom of the cushion block (43); a hydraulic rod (45) is arranged at the bottom end of the hydraulic cylinder (44); a piston block (46) is sleeved at the bottom end of the hydraulic rod (45); a movable groove (411) is opened inside the mounting block (41); the piston block (46) is movably connected to the inside of the movable groove (411); and the upper surface of the cushion block (43) contacts the bottom of the steel box beam.

2. The steel box girder pushing and sliding beam dropping auxiliary device according to claim 1 is characterized in that: A protective block (5) is provided on the upper surface of the cushion block (43), and the protective block (5) is a component made of nitrile rubber.

3. The steel box girder pushing and sliding beam dropping auxiliary device according to claim 1 is characterized in that: An O-type sealing ring (6) is provided on the inner wall of the movable groove (411), and the outer surface of the hydraulic rod (45) is in contact with the center of the O-type sealing ring (6).

4. The steel box beam pushing and sliding beam dropping auxiliary device according to claim 1 is characterized in that: A groove (31) and a threaded hole (32) are provided on the upper surface of the support beam (3), and one side of the mounting block (41) is threadedly connected to the threaded hole (32) via a bolt.

5. The steel box girder pushing and sliding beam dropping auxiliary device according to claim 4 is characterized in that: A shock-absorbing pad (7) is provided between the groove (31) and the mounting block (41).

6. The steel box girder pushing and sliding beam dropping auxiliary device according to claim 1 is characterized in that: The cushion blocks (43) are provided in two groups, and a connecting rod (431) is provided between the two groups of cushion blocks (43). A spring telescopic rod (432) is provided at the bottom of one group of cushion blocks (43), and a shock absorbing spring (42) is also provided.

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