Hoisting protection device based on prefabricated small box girder

Abstract

The utility model relates to the technical field of prefabricated small box girders, and discloses a hoisting protection device based on a prefabricated small box girder, which comprises a mounting shell and a fixed shell arranged on one side of the mounting shell, and further comprises supporting seats fixed on two sides of the top of the mounting shell, the surface of the fixing shell is fixedly connected with a protection plate, and the surface of the mounting shell is fixedly connected with a fixing base. The steel wire rope and the box girder can be buffered under the cooperation of the protection plate, so that the situation that the steel wire rope is broken is reduced, and the protection plate is convenient to replace under the cooperation of the worm, the worm wheel and the connecting mechanism when needing to be replaced. Meanwhile, under the action of the adjusting mechanism, the connecting rod and the positioning block, the device can be conveniently fixed to the surface of the steel wire rope, so that the device is not prone to being separated from the steel wire rope, and the problems that when an existing device is used, the protection effect is poor, and safety is poor are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to prefabricated small box girder technical field, concretely is a hoisting protection device based on prefabricated small box girder. BACKGROUND

[0002] The prefabricated box girder is a prefabricated concrete girder made in a factory or on site, and its cross section is usually rectangular or box-shaped, hence the name. The hoisting device of the prefabricated small box girder is a key equipment to ensure efficient and safe bridge construction. The hoisting device of the prefabricated small box girder is usually composed of multiple components, including but not limited to a travelling crane, a rack, a fixed plate, a steel wire rope, a positioning and clamping mechanism, etc. Among them, the positioning and clamping mechanism is the core component of the hoisting device, which is responsible for precise positioning and stable clamping of the prefabricated small box girder during hoisting.

[0003] However, the existing part of the hoisting machine mostly uses steel wire rope to contact with the box girder during use, and the material of the box girder is concrete. After the steel wire rope is connected with the box girder, wood or other structures are used to block the side edges and corners of the box girder, thereby reducing the risk of breaking of the steel wire rope. However, the existing structure has poor protection effect on the steel wire rope during use, and after hoisting is completed, the wood or other structures fall off without being squeezed between the box girder and the steel wire rope, thereby reducing the safety during hoisting. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a hoisting protection device based on prefabricated small box girder to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a hoisting protection device based on prefabricated small box girder, comprising a mounting shell and a fixed shell arranged on one side thereof, further comprising:

[0006] Supporting seats fixed on both sides of the top of the mounting shell, a connecting mechanism is installed in the interior of the supporting seat, a protective plate is fixedly connected to the surface of the fixed shell, a fixed seat is fixedly connected to the surface of the mounting shell, and a worm is rotatably connected to the inner cavity of the fixed seat;

[0007] Worm gears engaged with two places on the surface of the worm, positioning blocks are slidably connected to both sides of the inner cavity of the mounting shell, a connecting rod is fixedly connected to one side of the positioning block, and an adjusting mechanism is installed on one side of the mounting shell.

[0008] Preferably, the connecting mechanism comprises a rotating rod rotating in the inner cavity of the supporting seat and a clamping block fixed to one end of the rotating rod, and a clamping groove is formed in one side of the fixed shell.

[0009] Preferably, the adjusting mechanism comprises a movable frame fixed to one side of the connecting rod and a connecting plate fixed to the surface of the movable frame, and a compression spring is fixedly connected to one side of the connecting plate.

[0010] Preferably, the inner cavity of the movable frame is fixedly connected with a limiting frame, and the surface of the limiting frame is in sliding connection with the inner wall of the mounting shell.

[0011] Preferably, a plurality of fixing grooves are formed in one side of the positioning block.

[0012] Preferably, a positioning groove is formed in one side of the protective plate, and the inner cavity of the positioning groove is of an arc-shaped structure.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] The protective plate can buffer the steel wire rope and the box girder, so that the breakage of the steel wire rope is reduced, the service life of the steel wire rope is effectively prolonged, the device can be fixed on the surface of the steel wire rope through the adjustment mechanism, the connecting rod and the positioning block, the device cannot be easily separated from the steel wire rope, the safety during hoisting is improved, and the problem that the existing device has poor protection effect and poor safety during use is solved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a three-dimensional structure schematic view in the utility model;

[0016] Figure 2 is another three-dimensional structure schematic view in the utility model from another perspective;

[0017] Figure 3 is a local three-dimensional expansion structure schematic view in the utility model;

[0018] Figure 4 is a local three-dimensional cross-sectional structure schematic view in the utility model.

[0019] In the drawing: 1, mounting shell; 2, fixed shell; 3, support seat; 4, connecting mechanism; 41, rotating rod; 42, clamping block; 43, clamping groove; 5, protective plate; 6, worm wheel; 7, fixed seat; 8, worm; 9, positioning block; 10, connecting rod; 11, adjustment mechanism; 111, movable frame; 112, connecting plate; 113, compression spring; 12, fixing groove; 13, positioning groove; 14, limiting frame. DETAILED DESCRIPTION

[0020] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0021] Please refer to Figures 1-4As shown, a kind of hoisting protection device based on prefabricated small box girder, including installation shell 1, one side of installation shell 1 is provided with fixed shell 2, both sides of the top of installation shell 1 are fixedly connected with support seat 3, connection mechanism 4 is installed in the inside of support seat 3, connection mechanism 4 is used to connect installation shell 1 with fixed shell 2, so that installation shell 1 is more convenient when being connected with fixed shell 2, the surface of fixed shell 2 is fixedly connected with protection plate 5, protection plate 5 is designed with rubber material, under the action, the steel wire rope can be passed through the inside of installation shell 1, when box girder is hoisted, the steel wire rope and box girder can be blocked under the action of protection plate 5, so as to buffer the steel wire rope, reduce the damage degree when box girder wears the steel wire rope, effectively improve the service life of steel wire rope, so that box girder is more safe when hoisting, one side of protection plate 5 is provided with positioning groove 13, the inner cavity of positioning groove 13 is designed in arc structure, under the action of shape, the steel wire rope can be limited, so that the steel wire rope can be clamped in the inside of positioning groove 13, avoid the steel wire rope from the inside of positioning groove 13 to move out and no longer contact with protection plate 5, effectively improve the protection effect of steel wire rope, the surface of installation shell 1 is fixedly connected with fixed seat 7, the inner cavity of fixed seat 7 is rotatably connected with worm 8, the surface of worm 8 is engaged with worm gear 6 at two places, worm gear 6 is used in cooperation with connection mechanism 4, under the action, when it is necessary to adjust connection mechanism 4, worm 8 is rotated to make worm gear 6 rotate, so as to adjust connection mechanism 4, make protection plate 5 more convenient when needing to be replaced after long-term use, improve the applicability of the device, both sides of the inner cavity of installation shell 1 are slidably connected with positioning block 9, one side of positioning block 9 is fixedly connected with connecting rod 10, the other end of connecting rod 10 penetrates to the outside of installation shell 1 and is slidably connected with the inner wall of its penetration place, one side of installation shell 1 is provided with adjusting mechanism 11, under the action of adjusting mechanism 11, the position of positioning block 9 can be adjusted by the cooperation of connecting rod 10, so that positioning block 9 can clamp the steel wire rope, so as to fix the device at any part of the steel wire rope, so that the position of the device can be adjusted on the surface of the steel wire rope according to the size of box girder, effectively improve the applicability of the device, one side of positioning block 9 is provided with fixing groove 12, the number of fixing groove 12 is several, under the action, the friction between fixing groove 12 and steel wire rope can be increased, so as to improve the connection effect between positioning block 9 and steel wire rope, improve the stability of the device when in use.

[0022] The connecting mechanism 4 comprises a rotating rod 41 rotating in the inner cavity of the supporting seat 3, one end of the rotating rod 41 is fixedly connected with a clamping block 42, one side of the fixed shell 2 is provided with a clamping groove 43, the surface of the clamping block 42 is in sliding connection with the inner wall of the clamping groove 43, one end of the rotating rod 41 is fixedly connected with the surface of the worm wheel 6, under the action, the worm wheel 6 can drive the rotating rod 41 to rotate when the worm 8 rotates, so that the clamping block 42 can be interlaced with the clamping groove 43 after entering the inside of the clamping groove 43, so that the clamping block 42 cannot easily move out of the clamping groove 43, under the action, the protective plate 5 is convenient to disassemble and assemble, so that the protective plate 5 is more convenient to replace when needed.

[0023] The adjusting mechanism 11 comprises a movable frame 111 fixed to one side of the connecting rod 10, the surface of the movable frame 111 is fixedly connected with a connecting plate 112, one side of the connecting plate 112 is fixedly connected with a compression spring 113, under the action, when the connecting rod 10 needs to be moved, the movable frame 111 drives the connecting rod 10 to move by pressing the connecting plate 112, so that the connecting rod 10 can drive the positioning block 9 to separate from the steel wire rope, effectively facilitating the adjustment of the position of the device, and after adjustment, the positioning block 9 can move under the cooperation of the compression spring 113, so as to facilitate the contact with the steel wire rope, so that the device is more convenient to move, the inner cavity of the movable frame 111 is fixedly connected with a limiting frame 14, the surface of the limiting frame 14 is in sliding connection with the inner wall of the mounting shell 1, under the action, the movable frame 111 can be limited by the limiting frame 14, so that the movable frame 111 can be more stable when moving, avoiding affecting the accuracy of the position of the movable frame 111.

[0024] Working principle: first, the steel wire rope is inserted into the inside of the mounting shell 1, then the connecting plate 112 is pressed to drive the positioning block 9 to be in contact with the steel wire rope through the cooperation of the movable frame 111, then the device is moved to the appropriate position, then the connecting plate 112 is released, and the positioning block 9 can be in contact with the steel wire rope under the action of the compression spring 113, so that the device can be fixed on the surface of the steel wire rope, then hoisting, not only can effectively protect the steel wire rope, but also can improve the safety of the box girder during hoisting, and when the protective plate 5 needs to be replaced after long-term use, the worker rotates the worm 8 to drive the worm wheel 6 to rotate the rotating rod 41, and when the rotating rod 41 rotates, the clamping block 42 rotates, when the clamping block 42 rotates to the position corresponding to one side of the inner cavity of the clamping groove 43, the clamping block 42 is taken out from the inside of the clamping groove 43, the connection between the mounting shell 1 and the fixed shell 2 is released, then the protective plate 5 can be replaced.

[0025] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and implementations, it is to be understood that the terminology used is for the purpose of descriptive clarity and that it is intended to be limited only by the words recited in the appended claims. The scope of the present application shall be limited only by the claims.

[0026] While the embodiments of the present application have been shown and described with respect to particular embodiments thereof, it will be understood by those skilled in the art that various changes in form and details can be made therein without departing from the spirit and scope of the application. Therefore, the scope of the application should not be limited by the embodiments, but should be defined only in accordance with the following claims and their equivalents.

Claims

1. A hoisting protection device based on a prefabricated small box girder, comprising a mounting shell (1) and a fixing shell (2) arranged on one side thereof, characterized in that, Also include: The support seat (3) is fixed on both sides of the top of the installation shell (1), the inside of the support seat (3) is provided with a connecting mechanism (4), the surface of the fixed shell (2) is fixedly connected with a protective plate (5), the surface of the installation shell (1) is fixedly connected with a fixed seat (7), the inner cavity of the fixed seat (7) is rotatably connected with a worm (8); The worm gear (6) is engaged with the surface of the worm (8), the inside of the installation shell (1) is slidably connected with a positioning block (9) on both sides, one side of the positioning block (9) is fixedly connected with a connecting rod (10), one side of the installation shell (1) is provided with an adjusting mechanism (11).

2. A hoisting protection device based on a prefabricated small box girder according to claim 1, characterized in that: The connecting mechanism (4) comprises a rotating rod (41) rotatably arranged in the inner cavity of the support seat (3) and a clamping block (42) fixed to one end of the rotating rod (41), and the fixed shell (2) is provided with a clamping groove (43) on one side.

3. The hoisting protection device based on prefabricated small box girder according to claim 1, characterized in that: The adjusting mechanism (11) comprises a movable frame (111) fixed to one side of the connecting rod (10) and a connecting plate (112) fixed to the surface of the movable frame (111), and one side of the connecting plate (112) is fixedly connected with a compression spring (113).

4. A hoisting protection device based on a prefabricated small box girder according to claim 3, characterized in that: The inner cavity of the movable frame (111) is fixedly connected with a limiting frame (14), and the surface of the limiting frame (14) is slidably connected with the inner wall of the installation shell (1).

5. The precast small box girder based hoisting protection device according to claim 1, characterized in that: One side of the positioning block (9) is provided with a fixing groove (12), and the number of the fixing groove (12) is several.

6. A hoisting protection device based on prefabricated small box girder according to claim 1, characterized in that: One side of the protective plate (5) is provided with a positioning groove (13), and the inner cavity of the positioning groove (13) is designed in an arc shape.

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