Steel pipe lifting appliance with clamping jaw mechanism

Abstract

The utility model discloses a steel pipe lifting appliance with a clamping jaw mechanism, which comprises a movable bottom plate, movable wheels are arranged at the bottom of the movable bottom plate, a supporting upright post is fixedly mounted in the middle of the top of the movable bottom plate, a lifting rod is rotatably connected to the top of the supporting upright post, a lifting push rod is arranged in the middle of the supporting upright post, and a clamping jaw is arranged on the lifting push rod. The top of the lifting push rod is rotationally connected with the bottom of a lifting rod, a connecting chain is arranged at the other end of the lifting rod, a mounting frame is fixedly mounted at the bottom of the connecting chain, fixing blocks are fixedly mounted at the two ends of the mounting frame, pull rods are slidably connected to the middles of the fixing blocks in a penetrating mode, and clamping jaws are rotationally connected to the two ends of the fixing blocks. A lifting block located between the two clamping jaws is fixedly installed at the bottom of the pull rod. The connecting sliding rod is pulled to move along the sliding groove, so that the clamping jaw clamps the steel pipe, the situation that the center of gravity of round steel shifts and slides down in the lifting process is effectively prevented, and lifting safety and reliability are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a hoist technical field, concretely is a steel pipe hoist with claw mechanism. BACKGROUND

[0002] The steel pipe of the construction site is a kind of building material commonly seen in construction site or other engineering projects.It is usually made of round tubular structure of steel, with high strength and durability, suitable for various support, structure and conveying application, steel pipe hoist of construction site is a kind of equipment specially designed for steel pipe hoisting operation in construction site and other sites.The main purpose of this hoist is to safely and efficiently handle and unload steel pipes of various specifications and lengths to meet the needs of structural support and pipe installation in construction engineering.

[0003] The round steel hoist of prior art is generally adopted one four-bar linkage mechanism, and round steel is clamped and hoisted by the claw with arc, but general round steel material is relatively long, and its balance is difficult to grasp, and it is easy to shake in hoisting process, and if the center of gravity of round steel deviates or the lifting hook is improperly used, it is particularly easy to slide, causing equipment and personal safety accidents.

[0004] Therefore, we propose a steel pipe hoist with claw mechanism. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a steel pipe hoist with claw mechanism to solve the problems in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical scheme: a steel pipe hoist with claw mechanism, including mobile base plate, the bottom of mobile base plate is provided with movable wheel, the top of mobile base plate is fixedly installed with support stand in the middle, the top of support stand is rotatably connected with lifting rod, the middle of support stand is provided with lifting push rod, the top of lifting push rod is rotatably connected with the bottom of lifting rod, the other end of lifting rod is provided with connecting chain, the bottom of connecting chain is fixedly installed with mounting bracket, the both ends of mounting bracket are fixedly installed with fixed block, the middle of fixed block is slidably connected with pull rod, the both ends of fixed block are rotatably connected with claw, the bottom of pull rod is fixedly installed with lifting block between two claws, the outside of pull rod is equipped with lower spring, the both ends of lifting block are fixedly installed with connecting slide bar, the middle of claw is provided with sliding slot, and the inside of connecting slide bar and sliding slot is slidably connected.

[0007] Optionally, opposite surfaces of the bottom of the two clamping jaws are integrally connected with a fixed chuck, a middle part of the bottom of the lifting block is integrally connected with another fixed chuck, and the fixed chuck away from the mounting frame is penetrated and threadedly connected with an adjusting screw rod, and the three adjusting screw rods are towards the center point formed by the three fixed chucks.

[0008] Optionally, the top of the pressing spring is abuttingly arranged with the bottom of the fixed block, and the bottom of the pressing spring is abuttingly arranged with the top of the lifting block.

[0009] Optionally, one side of the moving base plate is fixedly installed with telescopic rods located at the front and back of the supporting column, the bottom of the end of the telescopic rod is fixedly installed with a moving wheel, and the other side of the moving base plate is fixedly installed with a push handle at the top.

[0010] Optionally, the bottom of the lifting push rod is rotationally connected with one side of the supporting column, and the rotationally connected part of the lifting push rod and the lifting rod is close to the rotationally connected part of the lifting rod and the supporting column.

[0011] Optionally, the middle part of the top of the mounting frame is fixedly installed with the bottom of the connecting chain, and the mounting frame is a square flat pipe, and the two fixed blocks are symmetrically arranged at the two ends of the mounting frame.

[0012] Optionally, the sliding groove is obliquely arranged in the middle part of the clamping jaw, and the top of the sliding groove is close to the center line of the fixed block.

[0013] Compared with the prior art, the steel pipe lifting appliance with the clamping jaw mechanism has the beneficial effects that:

[0014] The steel pipe lifting appliance with the clamping jaw mechanism, by arranging the fixed block, when lifting the steel pipe, the two clamping jaws are pulled to open the clamping jaws, the clamping jaws at the two ends of the mounting frame are clamped at the two ends of the steel pipe, under the action of the pressing spring, the lifting block is pulled down by the pull rod, and then the connecting sliding rod is moved along the sliding groove, so that the clamping jaws clamp the steel pipe, effectively prevent the steel pipe from slipping due to the deviation of the gravity center in the lifting process, and improve the safety and reliability of the lifting.

[0015] The steel pipe lifting appliance with the clamping jaw mechanism, by arranging the lifting push rod, the lifting rod is rotated around the top of the supporting column by the lifting push rod, and then the other end of the lifting rod lifts the mounting frame and the clamping jaw, and the length of the three adjusting screw rods on the fixed chuck can be adjusted according to the diameter of the steel pipe, so as to adapt to the lifting requirements of steel pipes with different diameters. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a whole structure schematic view of the steel pipe lifting appliance with the clamping jaw mechanism.

[0017] Fig. 2 It is a structure schematic view of the mounting frame of the steel pipe lifting appliance with the clamping jaw mechanism.

[0018] Fig. 3 Figure 1 is a structure diagram of the clamping jaw of the steel pipe lifting appliance with the clamping jaw mechanism.

[0019] In the figure: 1, moving base plate; 2, telescopic rod; 3, moving wheel; 4, push handle; 5, supporting stand column; 6, lifting push rod; 7, lifting rod; 8, connecting chain; 9, mounting rack; 10, fixed block; 11, pull rod; 12, clamping jaw; 13, lifting block; 14, sliding groove; 15, connecting sliding rod; 16, fixed clamp; 17, adjusting screw rod; 18, downward spring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] Please refer to Figs. 1 to 3 The utility model provides a kind of steel pipe lifting appliance with clamping jaw mechanism, including moving base plate 1, the bottom of moving base plate 1 is provided with moving wheel 3, the middle part of the top of moving base plate 1 is fixedly installed with supporting stand column 5, the top of supporting stand column 5 is rotatably connected with lifting rod 7, the middle part of supporting stand column 5 is provided with lifting push rod 6, the top of lifting push rod 6 is rotatably connected with the bottom of lifting rod 7, the other end of lifting rod 7 is provided with connecting chain 8, the bottom of connecting chain 8 is fixedly installed with mounting rack 9, the both ends of mounting rack 9 are fixedly installed with fixed block 10, the middle part of fixed block 10 is slidably connected with pull rod 11, the both ends of fixed block 10 are rotatably connected with clamping jaw 12, the bottom of pull rod 11 is fixedly installed with lifting block 13 between two clamping jaws 12, pull rod 11 is externally equipped with downward spring 18, the both ends of lifting block 13 are fixedly installed with connecting sliding rod 15, the middle part of clamping jaw 12 is provided with sliding groove 14, connecting sliding rod 15 is slidably connected with the inside of sliding groove 14, by being provided with fixed block 10, when hoisting steel pipe, two clamping jaws 12 are pulled, so that clamping jaw 12 opens, clamping jaw 12 is clamped in the both ends of mounting rack 9 in the both ends of steel pipe, under the action of downward spring 18, so that pull rod 11 pulls lifting block 13 to descend, in turn, connecting sliding rod 15 is moved along sliding groove 14, so that clamping jaw 12 clamps steel pipe, effectively prevent the sliding of round steel gravity center deviation in the process of lifting, improve hoisting safety reliability.

[0022] The opposite surface of the bottom of the two clamping jaws 12 is integrally connected with a fixed chuck 16, the middle part of the bottom of the lifting block 13 is integrally connected with another fixed chuck 16, the side of the fixed chuck 16 away from the mounting frame 9 is penetrated and threadedly connected with an adjusting screw rod 17, the three adjusting screw rods 17 are towards the center point formed by the three fixed chucks 16, the top of the downward pressing spring 18 is in abutting contact with the bottom of the fixed block 10, the bottom of the downward pressing spring 18 is in abutting contact with the top of the lifting block 13, one side of the moving base plate 1 is fixedly installed with telescopic rods 2 located at the front and rear sides of the supporting column 5, the bottom of the end of the telescopic rod 2 is fixedly installed with a moving wheel 3, the top of the other side of the moving base plate 1 is fixedly installed with a push handle 4, the bottom of the hoisting push rod 6 is rotationally connected with one side of the bottom of the supporting column 5, the rotationally connected place of the hoisting push rod 6 and the lifting rod 7 is close to the rotationally connected place of the lifting rod 7 and the supporting column 5, the middle part of the top of the mounting frame 9 is fixedly installed with the bottom of the connecting chain 8, the mounting frame 9 is a square flat tube, the two fixed blocks 10 are symmetrically arranged at the two ends of the mounting frame 9, the sliding groove 14 is obliquely opened in the middle part of the clamping jaw 12, the top of the sliding groove 14 is close to the center line of the fixed block 10, by arranging the hoisting push rod 6, the lifting rod 7 is pushed by the hoisting push rod 6 to rotate around the top of the supporting column, and then the other end of the lifting rod 7 hoists the mounting frame 9 and the clamping jaw 12, and the length of the three adjusting screw rods 17 on the fixed chuck 16 can be adjusted according to the diameter of the steel pipe, so that the hoisting requirement of the steel pipe with different diameters is met.

[0023] Working principle:

[0024] When the steel pipe is hoisted, the two clamping jaws 12 are pulled to make the clamping jaws 12 open, the clamping jaws 12 at the two ends of the mounting frame 9 are clamped at the two ends of the steel pipe, under the action of the downward pressing spring 18, the lifting block 13 is pulled down by the pull rod 11, and then the connecting sliding rod 15 is moved along the sliding groove 14, so that the clamping jaw 12 clamps the steel pipe, effectively prevents the round steel from slipping due to the deviation of the gravity center in the hoisting process, improves the hoisting safety and reliability, the lifting rod 7 is pushed by the hoisting push rod 6 to rotate around the top of the supporting column, and then the other end of the lifting rod 7 hoists the mounting frame 9 and the clamping jaw 12, and the length of the three adjusting screw rods 17 on the fixed chuck 16 can be adjusted according to the diameter of the steel pipe, so that the hoisting requirement of the steel pipe with different diameters is met.

[0025] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A steel pipe sling having a gripper mechanism, comprising a moving base plate (1), characterized in that, The bottom of the mobile base plate (1) is provided with a mobile wheel (3), the middle of the top of the mobile base plate (1) is fixedly installed with a supporting column (5), the top of the supporting column (5) is rotatably connected with a lifting rod (7), the middle of the supporting column (5) is provided with a lifting push rod (6), the top of the lifting push rod (6) is rotatably connected with the bottom of the lifting rod (7), the other end of the lifting rod (7) is provided with a connecting chain (8), the bottom of the connecting chain (8) is fixedly installed with a mounting rack (9), the two ends of the mounting rack (9) are fixedly installed with a fixed block (10), the middle of the fixed block (10) is slidably connected with a pull rod (11), the two ends of the fixed block (10) are rotatably connected with a clamping jaw (12), the bottom of the pull rod (11) is fixedly installed with a lifting block (13) between the two clamping jaws (12), the outside of the pull rod (11) is sleeved with a pressing spring (18), the two ends of the lifting block (13) are fixedly installed with a connecting sliding rod (15), the middle of the clamping jaw (12) is provided with a sliding groove (14), and the connecting sliding rod (15) is slidably connected with the inside of the sliding groove (14).

2. A steel pipe sling having a gripper mechanism according to claim 1, characterized in that, The opposite surfaces of the bottoms of the two clamping jaws (12) are integrally connected with a fixed chuck (16), the middle of the bottom of the lifting block (13) is integrally connected with another fixed chuck (16), and the side, away from the mounting rack (9), of the fixed chuck (16) penetrates and is threadedly connected with an adjusting screw rod (17). The three adjusting screw rods (17) are formed towards the center point formed by the three fixed chucks (16).

3. A pipe sling with a gripper mechanism according to claim 1, characterized in that, The top of the pressing spring (18) is in abutting arrangement with the bottom of the fixed block (10), and the bottom of the pressing spring (18) is in abutting arrangement with the top of the lifting block (13).

4. A pipe sling having a gripper mechanism according to claim 1, wherein One side of the mobile base plate (1) is fixedly installed with telescopic rods (2) located on the front and back sides of the supporting column (5), the bottom of the end of the telescopic rod (2) is fixedly installed with a mobile wheel (3), and the top of the other side of the mobile base plate (1) is fixedly installed with a push handle (4).

5. A pipe sling having a gripper mechanism according to claim 1, wherein The bottom of the lifting push rod (6) is rotatably connected with one side of the bottom of the supporting column (5), and the rotatable connection position of the lifting push rod (6) and the lifting rod (7) is close to the rotatable connection position of the lifting rod (7) and the supporting column (5).

6. A pipe sling having a gripper mechanism according to claim 1, wherein The middle of the top of the mounting rack (9) is fixedly installed with the bottom of the connecting chain (8), and the mounting rack (9) is a square flat tube, and the two fixed blocks (10) are symmetrically arranged at the two ends of the mounting rack (9).

7. A pipe sling having a gripper mechanism according to claim 1, wherein The sliding groove (14) is inclinedly arranged in the middle of the clamping jaw (12), and the top of the sliding groove (14) is close to the center line of the fixed block (10).

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