Hoisting device for bridge construction

Abstract

The utility model discloses a hoisting device for bridge construction, and particularly relates to the technical field of bridge construction, the hoisting device comprises a frame, two hydraulic cylinders and a connecting arm, two ends of the two hydraulic cylinders are movably connected with the connecting arm and the frame through hinged supports, one end of the connecting arm is movably connected with the frame through a hinged support, and the other end of the connecting arm is movably connected with the frame through a hinged support. A first lock chain is clamped to the bottom end of the connecting arm, a mounting frame is clamped to the bottom end of the first lock chain, and an extrusion assembly is arranged on the mounting frame. The stepping motor works to drive the two clamping plates to move oppositely, the steel box girder is extruded and fixed through the two clamping plates, the steel box girder is bound through the second lock chain, and piston rods on the two hydraulic cylinders extend to drive the connecting arms to deflect, so that the mounting frame is driven to move upwards, and then the steel box girder is driven to move upwards. The steel box girder hoisting device is easy to operate, effectively improves the construction efficiency and meanwhile is wide in application range.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge construction technical field more specifically, the utility model relates to a hoisting device for bridge construction. BACKGROUND

[0002] Bridge construction refers to the process of converting bridge from design drawings into actual engineering through a series of professional technical means, which covers multiple links such as foundation excavation, pier pouring, beam erection and bridge pavement. The hoisting equipment for bridge construction refers to the professional mechanical equipment used for lifting, installing and transporting various bridge components and materials during bridge construction.

[0003] According to the search, the Chinese patent with the publication number CN218201777U discloses a steel box girder hoisting device for bridge construction. By cooperating the first clamping plate, the second clamping plate, the fastening bolt, the steel plate, the stop plate and the side groove, the distance between the first clamping plate and the second clamping plate can be adjusted according to the size of the steel box girder to be hoisted, thereby the steel box girders of different sizes can be clamped and hoisted, and the use range and practicality of the hoisting device during use are improved.

[0004] During use of the hoisting device, the steel plate is fixed by the fastening bolt, and the steel box girder body can be limited by the first clamping plate and the second clamping plate. However, the position between the first clamping plate and the second clamping plate needs to be adjusted manually, which not only consumes manpower and time, but also affects the construction efficiency. Moreover, it is inconvenient to limit the steel box girders of different sizes, and the applicable range is small. UTILITY MODEL CONTENTS

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a hoisting device for bridge construction, which aims to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a hoisting device for bridge construction, comprising a vehicle frame, two hydraulic cylinders and a connecting arm, both ends of the two hydraulic cylinders are movably connected with the connecting arm and the vehicle frame through hinge bases, one end of the connecting arm is movably connected with the vehicle frame through a hinge base, the bottom end of the connecting arm is clamped with a first chain, the bottom end of the first chain is clamped with a mounting bracket, an extrusion assembly is arranged on the mounting bracket, the extrusion assembly comprises a stepping motor, a reversible screw rod, two U-shaped sliding racks, two sliding rods and two clamping plates, the stepping motor is fixedly installed on the inside of the mounting bracket, the output shaft end of the stepping motor is fixedly connected with the reversible screw rod, one end of the reversible screw rod is movably connected with the mounting bracket through a bearing, both the two sliding rods are fixedly connected with the mounting bracket, and both the one end of the two sliding rods and the one end of the reversible screw rod penetrate through the two U-shaped sliding racks, and the bottom end of the two U-shaped sliding racks is fixedly connected with the two clamping plates respectively.

[0007] Further, the inside of the mounting frame is fixedly connected with a U-shaped plate, and the U-shaped plate is movably connected with the positive and negative lead screws through bearings.

[0008] It can be seen that the above technical solution prevents the U-shaped sliding frame from pressing the stepper motor.

[0009] Further, the second lock chain is clamped on one of the clamping plates, and the second lock chain serves to limit the steel box girder twice.

[0010] Further, the top end of the frame is fixedly connected with a connecting frame on one side edge, and the connecting frame and bolts are used to facilitate the installation of the frame.

[0011] Further, the inside of the frame is fixedly connected with two side frames, and a buffer assembly is arranged between the two side frames, the buffer assembly comprising a gasket, a horizontal plate, two side plates, two limiting rods and two threaded sleeves.

[0012] Further, the bottom end of the gasket is fixedly connected with the horizontal plate, one side of each of the two side plates is fixedly connected with the horizontal plate, and the two side plates and the two threaded sleeves are movably sleeved on the two limiting rods, and one end of each of the two limiting rods is fixedly connected with the two side frames.

[0013] It can be seen that the above technical solution facilitates the support and buffering of the steel box girder.

[0014] Further, an insertion block is movably sleeved on each of the two limiting rods, and one side of each of the two insertion blocks is in contact with the two side frames.

[0015] It can be seen that the above technical solution improves the stability between the threaded sleeve and the side frame.

[0016] The technical effects and advantages of the present application are as follows:

[0017] 1. The stepper motor drives the positive and negative lead screws to rotate, thereby driving the two clamping plates to move towards each other, the two clamping plates are used to press and fix the steel box girder, the second lock chain is used to bind the steel box girder, the stability of the steel box girder is further improved, the piston rod of the two hydraulic cylinders is elongated to drive the connecting arm to deflect, thereby driving the mounting frame to move upwards, and the steel box girder is lifted, the operation is simple, the construction efficiency is effectively improved, and the application range is wide.

[0018] 2. The utility model discloses a horizontal moving cross plate and make the gasket be located the bottom of mounting bracket, when steel box girder falls, the gasket and cross plate can support the steel box girder and buffer, rotate two threaded sleeves in proper order and make them away from two limit rods, horizontal moving cross plate and make two side plates away from two limit rods respectively, dismantle and replace gasket, simple structure, convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0019] The structure, proportion, size etc. shown in the specification are only used to cooperate with the content disclosed in the specification, for understanding and reading by those skilled in the art, and are not used to limit the limiting conditions of the implementation of the utility model, so they do not have the substantial meaning of technology, any modification of structure, change of proportion relationship or adjustment of size, without affecting the effect and purpose that the utility model can produce, should still fall within the range covered by the disclosed technology content of the utility model.

[0020] Figure 1 It is the overall structure schematic view of the utility model;

[0021] Figure 2 It is the overall structure bottom view of the utility model;

[0022] Figure 3 It is the frame and side frame assembly structure schematic view of the utility model;

[0023] Figure 4 It is the buffer assembly structure schematic view of the utility model;

[0024] Figure 5 It is the extrusion assembly structure schematic view of the utility model.

[0025] In the drawing: 1, frame; 2, hydraulic cylinder; 3, connecting arm; 4, first padlock; 5, mounting bracket; 6, extrusion assembly; 7, side frame; 8, buffer assembly; 9, connecting frame; 601, stepping motor; 602, positive and negative screw rod; 603, U-shaped sliding frame; 604, sliding rod; 605, clamping plate; 606, U-shaped plate; 607, second padlock; 801, gasket; 802, cross plate; 803, side plate; 804, limit rod; 805, threaded sleeve; 806, plug-in block. DETAILED DESCRIPTION

[0026] The embodiments of the utility model are described below by specific examples, and those skilled in the art can easily understand other advantages and effects of the utility model from the disclosed content of the specification. Obviously, the described examples are part of the embodiments of the utility model, not all. Based on the examples in the utility model, all other examples obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0027] With reference to the description accompanying drawings Figures 1-5 The bridge construction hoisting device of the embodiment comprises a vehicle frame 1, two hydraulic cylinders 2 and a connecting arm 3, both ends of the two hydraulic cylinders 2 are movably connected with the connecting arm 3 and the vehicle frame 1 through hinge seats, one end of the connecting arm 3 is movably connected with the vehicle frame 1 through a hinge seat, the bottom end of the connecting arm 3 is clamped with a first chain 4, the bottom end of the first chain 4 is clamped with a mounting rack 5, the mounting rack 5 is provided with an extrusion assembly 6, the extrusion assembly 6 comprises a stepping motor 601, a reversible screw rod 602, two U-shaped sliding racks 603, two sliding rods 604 and two clamping plates 605, the stepping motor 601 is fixedly installed on the inner side of the mounting rack 5, and the output shaft end of the stepping motor 601 is fixedly connected with the reversible screw rod 602, one end of the reversible screw rod 602 is movably connected with the mounting rack 5 through a bearing, the two sliding rods 604 are fixedly connected with the mounting rack 5, and one end of the reversible screw rod 602 and the two sliding rods 604 are both penetrated through the two U-shaped sliding racks 603, and the bottom end of the two U-shaped sliding racks 603 are fixedly connected with the two clamping plates 605 respectively.

[0028] Further, the inner side of the mounting rack 5 is fixedly connected with a U-shaped plate 606, and the U-shaped plate 606 is movably connected with the reversible screw rod 602 through a bearing, and the second chain 607 is clamped on one of the clamping plates 605, wherein the second chain 607 plays a role of secondary limiting for the steel box girder, and the top end of the vehicle frame 1 is fixedly connected with a connecting frame 9 on the side edge position, wherein the connecting frame 9 and the bolts are used to facilitate the installation of the vehicle frame 1.

[0029] Further, the inner side of the mounting rack 5 is fixedly connected with a U-shaped plate 606, and the U-shaped plate 606 is movably connected with the reversible screw rod 602 through a bearing, and the second chain 607 is clamped on one of the clamping plates 605, wherein the second chain 607 plays a role of secondary limiting for the steel box girder, and the top end of the vehicle frame 1 is fixedly connected with a connecting frame 9 on the side edge position, wherein the connecting frame 9 and the bolts are used to facilitate the installation of the vehicle frame 1.

[0030] The horizontal movement of the horizontal plate 802 and the positioning of the gasket 801 at the bottom of the mounting frame 5 can prevent the horizontal plate 802 from being deflected when the horizontal plate 802 moves horizontally, and the gasket 801 and the horizontal plate 802 can support and buffer the steel box girder when the steel box girder falls, the two threaded sleeves 805 are sequentially rotated and moved away from the two limiting rods 804, the horizontal plate 802 is moved horizontally and the two side plates 803 are moved away from the two limiting rods 804, and the gasket 801 is disassembled and replaced, so that the structure is simple and convenient to use, and the gasket 801 is installed, and the block 806 can improve the stability between the threaded sleeve 805 and the side frame 7, and it is worth noting that a thread is formed at the outer side edge position of the limiting rod 804.

[0031] The use method of the embodiment is:

[0032] In use, the connecting frame 9 is installed on the vehicle body through bolts, the staff starts the stepping motor 601, the stepping motor 601 works to drive the forward and reverse screw rod 602 to rotate, the two U-shaped sliding frames 603 are in threaded connection with the forward and reverse screw rod 602, the two sliding rods 604 limit the rotation of the two U-shaped sliding frames 603, so that the forward and reverse screw rod 602 can drive the two U-shaped sliding frames 603 to move towards each other, thereby driving the two clamping plates 605 to move towards each other, the steel box girder is fixed by extrusion through the two clamping plates 605, the second lock chain 607 is clamped on the clamping plate 605, and the steel box girder is bound through the second lock chain 607, thereby further improving the stability of the steel box girder, the two hydraulic cylinders 2 are started, the piston rods on the two hydraulic cylinders 2 are elongated to drive the connecting arms 3 to deflect, thereby driving the mounting frame 5 to move upwards, and further driving the steel box girder to move upwards, thereby hoisting the steel box girder, which is simple to operate and effectively improves the construction efficiency, and has a wide range of applications.

[0033] The contents not described in detail in the specification all belong to the prior art known to those skilled in the art, and the model parameters of various appliances are not specifically limited, and conventional equipment can be used, in the technical solution, the appliance control elements not mentioned belong to the prior art, and therefore are not shown in the drawings, and will not be described here.

[0034] The above is only a preferred embodiment of the present application, and does not limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A hoisting device for bridge construction, comprising a frame (1), two hydraulic cylinders (2) and a connecting arm (3), wherein both ends of the two hydraulic cylinders (2) are movably connected to the connecting arm (3) and the frame (1) via hinges, and one end of the connecting arm (3) is movably connected to the frame (1) via a hinge, characterized in that: The bottom end of the connecting arm (3) is clamped with a first chain (4), the bottom end of the first chain (4) is clamped with a mounting rack (5), the mounting rack (5) is provided with an extrusion assembly (6), the extrusion assembly (6) comprises a stepping motor (601), a positive and negative screw rod (602), two U-shaped sliding racks (603), two slide rods (604) and two clamping plates (605), the stepping motor (601) is fixedly installed on the inner side of the mounting rack (5), and the output shaft end of the stepping motor (601) is fixedly connected with the positive and negative screw rod (602), one end of the positive and negative screw rod (602) is movably connected with the mounting rack (5) through a bearing, the two slide rods (604) are fixedly connected with the mounting rack (5), and one end of the two slide rods (604) and the positive and negative screw rod (602) penetrates the two U-shaped sliding racks (603), and the bottom end of the two U-shaped sliding racks (603) is fixedly connected with the two clamping plates (605) respectively.

2. The hoisting device for bridge construction according to claim 1, characterized in that: The inner side of the mounting rack (5) is fixedly connected with a U-shaped plate (606), and the U-shaped plate (606) is movably connected with the positive and negative screw rod (602) through a bearing.

3. The hoisting device for bridge construction according to claim 1, characterized in that: One of the clamping plates (605) is clamped with a second chain (607), wherein the second chain (607) serves to limit the steel box girder twice.

4. The hoisting device for bridge construction according to claim 1, characterized in that: The top end of the frame (1) is fixedly connected with a connecting frame (9) on one side edge position, wherein the connecting frame (9) and the bolt are used to facilitate the installation of the frame (1).

5. The hoisting device for bridge construction according to claim 1, characterized in that: The inner side of the frame (1) is fixedly connected with two side frames (7), and the two side frames (7) are provided with a buffer assembly (8), the buffer assembly (8) comprises a gasket (801), a horizontal plate (802), two side plates (803), two limiting rods (804) and two threaded sleeves (805).

6. The hoisting device for bridge construction according to claim 5, characterized in that: The bottom end of the gasket (801) is fixedly connected with the horizontal plate (802), the opposite sides of the two side plates (803) are fixedly connected with the horizontal plate (802), and the two side plates (803) and the two threaded sleeves (805) are movably sleeved on the two limiting rods (804), respectively, one end of the two limiting rods (804) is fixedly connected with the two side frames (7), respectively.

7. The hoisting device for bridge construction according to claim 5, characterized in that: The two limiting rods (804) are movably sleeved with an insertion block (806), and one side of the two insertion blocks (806) is in contact with the two side frames (7), respectively.

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