Cement pipe hoisting clamp

Abstract

The utility model relates to the technical field of engineering hoisting, in particular to a cement pipe hoisting clamp which comprises a connecting plate, the upper end face of the connecting plate is fixedly connected with an inverted telescopic rod, the outer wall of an output shaft of the telescopic rod is slidably connected with a mounting cylinder, and the outer wall of the connecting plate is rotatably connected with two supporting rods distributed left and right; a mounting cylinder moves downwards through gravity, the mounting cylinder is matched with two first connecting rods to drive two supporting rods to be opened outwards, so that two abutting plates abut against the inner wall of a vertically-placed cement pipe, a telescopic rod drives a connecting plate to move upwards, the two supporting rods continue to be supported outwards through the connecting plate, and the two abutting plates abut against the inner wall of the cement pipe tightly; and then the cement pipe which is vertically placed is hoisted. The two supporting rods are matched with the two second connecting rods to drive the two clamping plates to get close to each other, the two clamping plates abut against the outer wall of the horizontally-placed cement pipe, then the telescopic rods drive the connecting plates to move upwards, and then the horizontally-placed cement pipe is hoisted.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering hoisting, in particular to a hoisting clamp for a cement pipe. Background Art

[0002] Cement pipes, as an indispensable part of modern civil engineering, are widely used in urban construction, water conservancy projects, agricultural irrigation and other fields. They are pipes made of cement, sand, stone and other materials, mainly used for drainage, water supply, ventilation and other purposes.

[0003] The existing cement pipe lifting clamp can only lift cement pipes in one placement state. When the cement pipe is placed vertically, it is lifted by the internal support clamp. When the cement pipe is placed horizontally, it is lifted by the external clamp. When lifting cement pipes in different placement states, the lifting clamp needs to be replaced. The replacement process is cumbersome and time-consuming, which seriously affects the lifting efficiency of the cement pipe. Utility Model Content

[0004] The utility model aims to provide a cement pipe hoisting clamp, which has the characteristics of being able to hoist cement pipes in different placement states so as to improve the hoisting efficiency of the cement pipes.

[0005] To achieve the above-mentioned object, the utility model provides the following technical solution: a lifting clamp for a cement pipe, comprising a connecting plate, the upper end surface of the connecting plate is fixedly connected to an inverted telescopic rod, the outer wall of the output shaft of the telescopic rod is slidably connected to a mounting cylinder, the outer wall of the connecting plate is rotatably connected to two left and right distributed support rods, a first connecting rod is rotatably connected between the mounting cylinder and the two support rods via a hinge seat, one end of the support rod is rotatably connected to a second connecting rod, the two second connecting rods are rotatably connected to each other, and the other ends of the two second connecting rods are fixedly connected to a clamping plate;

[0006] The outer wall of the installation cylinder is provided with a locking mechanism.

[0007] In order to clamp and fix the installation tube, as a preferred lifting fixture for cement pipes of the present invention, the clamping mechanism includes a conical block fixed at the upper end of the outer wall of the installation tube, and the outer wall of the installation tube is movably connected to a movable block located below the conical block, and the lower end surface of the conical block is provided with a groove matching the movable block;

[0008] The lower end of the outer wall of the telescopic rod is fixedly connected with a mounting plate, and the lower end surface of the mounting plate is rotatably connected to two claws distributed on the left and right and matching with the tapered block and the movable block through a hinge seat.

[0009] In order to make the abutment plate change its angle according to the rotation of the support rod, as a preferred cement pipe lifting clamp of the utility model, an abutment plate is provided on one side of the support rod, the other end of the support rod is fixedly connected to a sphere, and one side wall of the abutment plate is fixedly connected to a limiting groove matching the sphere.

[0010] In order to drive the two clamping claws to approach each other, as a preferred cement pipe lifting clamp of the present invention, a counterweight block is fixedly connected to one side wall of the clamping claw.

[0011] In order to increase the contact area between the clamping plate and the outer wall of the cement pipe, as a preferred cement pipe lifting clamp of the present invention, the clamping plate is configured as an arc-shaped structure.

[0012] In order to facilitate the connection between the lifting fixture and the lifting machinery, as a preferred lifting fixture for a cement pipe of the present invention, the upper end surface of the telescopic rod is fixedly connected with a lifting ear.

[0013] In order to make the abutment plate hover at any position, as a preferred cement pipe lifting fixture of the present invention, the sphere is tightly connected to the inside of the limiting groove.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] The lifting fixture moves to the inside of the vertically placed cement pipe. At this time, the clamping plate abuts against the ground, and then the telescopic rod contracts, so that the locking mechanism releases the locking state of the installation cylinder. Then the installation cylinder moves downward due to gravity, and the installation cylinder cooperates with the two first connecting rods to drive the two support rods to open outward, so that the two abutment plates abut against the inner wall of the vertically placed cement pipe. Then the lifting mechanism cooperates with the telescopic rod to drive the connecting plate to move upward. At this time, the abutment points between the abutment plates and the inner wall of the cement pipe are kept stationary by friction, and the connecting plate continues to support the two support rods outward, so that the two abutment plates tightly abut against the inner wall of the cement pipe, thereby lifting the vertically placed cement pipe.

[0016] When lifting the horizontally placed cement pipe, the lifting clamp is moved above the horizontally placed cement pipe so that the two clamping plates are located on both sides of the horizontally placed cement pipe. The telescopic rod is then retracted to release the clamping mechanism from the clamping state of the installation cylinder. The installation cylinder then moves downward due to gravity, and the installation cylinder cooperates with the two first connecting rods to drive the two support rods to open outward. The two support rods cooperate with the two second connecting rods to drive the two clamping plates close to each other, so that the two clamping plates abut against the outer wall of the horizontally placed cement pipe. The lifting machinery then cooperates with the telescopic rod to drive the connecting plate to move upward, and the gravity of the cement pipe applies a downward pulling force to the two clamping plates. The two clamping plates cooperate with the two second connecting rods and the two support rods to firmly clamp the horizontally placed cement pipe, thereby lifting the horizontally placed cement pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the cross-sectional structure of the utility model in a front-view loosened state;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model in a front-view clamping state;

[0019] Figure 3 For this utility model Figure 1 The enlarged structural diagram of part a in the middle;

[0020] Figure 4 This is a schematic diagram of the three-dimensional structure of the installation cylinder of the utility model;

[0021] In the figure: 1. Connecting plate; 2. Telescopic rod; 3. Mounting tube; 4. Support rod; 5. First connecting rod; 6. Second connecting rod; 7. Clamping plate; 8. Conical block; 9. Movable block; 10. Groove; 11. Mounting plate; 12. Abutment plate; 13. Sphere; 14. Limiting groove; 15. Counterweight; 16. Lifting ear; 17. Claw. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is 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 a limitation on the present invention. In addition, in the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0023] See also Figures 1 to 4 A cement pipe lifting fixture includes a connecting plate 1, the upper end surface of the connecting plate 1 is fixedly connected to an inverted telescopic rod 2, the outer wall of the output shaft of the telescopic rod 2 is slidably connected to a mounting cylinder 3, the outer wall of the connecting plate 1 is rotatably connected to two left and right distributed support rods 4, the mounting cylinder 3 and the two support rods 4 are rotatably connected to a first connecting rod 5 through a hinge seat, one end of the support rod 4 is rotatably connected to a second connecting rod 6, the two second connecting rods 6 are rotatably connected to each other, and the other ends of the two second connecting rods 6 are fixedly connected to a clamping plate 7;

[0024] The outer wall of the mounting tube 3 is provided with a snap-fit ​​mechanism.

[0025] When the lifting device is lifted, the lifting clamp is connected to the lifting machine through the lifting ear 16, and the lifting clamp is moved to the inside of the vertically placed cement pipe by the lifting machine. At this time, the clamping plate 7 abuts against the ground, and then the lifting machine squeezes the telescopic rod 2 to release the clamping mechanism from the clamping state of the installation cylinder 3. Then the installation cylinder 3 moves downward by gravity, and the installation cylinder 3 cooperates with the two first connecting rods 5 to drive the two support rods 4 to open outward, so that the two abutment plates 12 abut against the inner wall of the vertically placed cement pipe. Then the lifting machine cooperates with the telescopic rod 2 to drive the connecting plate 1 to move upward. At this time, the abutment point between the abutment plate 12 and the inner wall of the cement pipe is kept stationary by friction, and the connecting plate 1 continues to support the two support rods 4 outward, so that the two abutment plates 12 tightly abut against the inner wall of the cement pipe, thereby lifting the vertically placed cement pipe.

[0026] When hoisting the horizontally placed cement pipe, the hoisting clamp is moved to the top of the horizontally placed cement pipe by the hoisting machinery, so that the two clamping plates 7 are located on both sides of the horizontally placed cement pipe, and then the hoisting machinery squeezes the telescopic rod 2 to release the clamping mechanism from the clamping state of the installation cylinder 3, and then the installation cylinder 3 moves downward by gravity, and the installation cylinder 3 cooperates with the two first connecting rods 5 to drive the two support rods 4 to open outward, and the two support rods 4 cooperate with the two second connecting rods 6 to drive the two clamping plates 7 to approach each other, so that the two clamping plates 7 abut against the outer wall of the horizontally placed cement pipe, and then the hoisting machinery cooperates with the telescopic rod 2 to drive the connecting plate 1 to move upward, and the gravity of the cement pipe applies a downward pulling force to the two clamping plates 7, and the two clamping plates 7 cooperate with the two second connecting rods 6 and the two support rods 4 to firmly clamp the horizontally placed cement pipe, thereby hoisting the horizontally placed cement pipe;

[0027] After moving the cement pipe to the designated position, the lifting machinery squeezes the telescopic rod 2 again, so that the locking mechanism locks and fixes the installation tube 3 again. Then the lifting machinery stretches the telescopic rod 2, and the telescopic rod 2 cooperates with the locking mechanism to drive the installation tube 3 to move upward, so that the two support rods 4 are close to each other. At the same time, the two support rods 4 cooperate with the two second connecting rods 6 to drive the two clamping plates 7 to open, and then separate the lifting fixture from the cement pipe, thereby completing the lifting of the cement pipe.

[0028] As a technical optimization solution of the present invention, the engaging mechanism includes a conical block 8 fixed to the upper end of the outer wall of the mounting cylinder 3, and the outer wall of the mounting cylinder 3 is movably connected to a movable block 9 located below the conical block 8. The lower end surface of the conical block 8 is provided with a groove 10 that matches the movable block 9;

[0029] The lower end of the outer wall of the telescopic rod 2 is fixedly connected to a mounting plate 11 , and the lower end surface of the mounting plate 11 is rotatably connected to two claws 17 distributed left and right and matching the tapered block 8 and the movable block 9 through a hinge seat.

[0030] In this embodiment, when the mounting tube 3 is engaged and fixed, the lifting machine squeezes the telescopic rod 2, and the telescopic rod 2 cooperates with the mounting plate 11 to drive the two claws 17 to move downward. The two claws 17 move away from each other through the tapered block 8, so that the lower ends of the two claws 17 move to the bottom of the tapered block 8, and then the two claws 17 move closer to each other, so that the lower ends of the two claws 17 are engaged with the lower end surface of the tapered block 8, thereby engaging and fixing the mounting tube 3 to the mounting plate 11.

[0031] When the engaged and fixed state of the mounting cylinder 3 is released, the mounting plate 11 drives the two claws 17 to continue to move downward. Since the outer wall of the movable block 9 is set to a tapered structure, the two claws 17 move away from each other through the movable block 9, so that the lower ends of the two claws 17 move to the bottom of the movable block 9, and then the two claws 17 approach each other, so that the lower ends of the two claws 17 are stuck in the lower end surface of the movable block 9, and then the telescopic rod 2 extends, and the telescopic rod 2 cooperates with the mounting plate 11 to drive the two claws 17 to move upward, and the two claws 17 drive the movable block 9 to move upward, so that the movable block 9 enters the groove 10, and then the movable block 9 is flush with the outer wall of the tapered block 8, and then the two claws 17 continue to move upward, so that the two claws 17 move away from each other through the movable block 9, and then the two claws 17 move to the top of the tapered block 8, thereby releasing the engaged and fixed state of the mounting cylinder 3.

[0032] As a technical optimization solution of the present invention, an abutment plate 12 is provided on one side of the support rod 4, a sphere 13 is fixedly connected to the other end of the support rod 4, and a limiting groove 14 matching the sphere 13 is fixedly connected to one side wall of the abutment plate 12.

[0033] In this embodiment, the sphere 13 and the limiting groove 14 can enable the abutment plate 12 to change its angle according to the rotation of the support rod 4 .

[0034] As a technical optimization solution of the present invention, a counterweight 15 is fixedly connected to one side wall of the claw 17 .

[0035] In this embodiment, the counterweight 15 can drive the two claws 17 to move closer to each other.

[0036] As a technical optimization solution of the present invention, the clamping plate 7 is configured as an arc-shaped structure.

[0037] In this embodiment, the clamping plate 7 is configured as an arc-shaped structure, which can increase the contact area between the clamping plate 7 and the outer wall of the cement pipe.

[0038] As a technical optimization solution of the present invention, a lifting lug 16 is fixedly connected to the upper end surface of the telescopic rod 2 .

[0039] In this embodiment, the lifting lug 16 facilitates the connection between the lifting fixture and the lifting machinery.

[0040] As a technical optimization solution of the present invention, the sphere 13 is tightly connected to the interior of the limiting groove 14 .

[0041] In this embodiment, the sphere 13 is tightly connected to the interior of the limiting groove 14 , so that the abutting plate 12 can be suspended at any position.

[0042] Working principle: When lifting a vertically placed cement pipe, first connect the lifting clamp to the lifting machinery through the lifting ear 16, and move the lifting clamp to the inside of the vertically placed cement pipe through the lifting machinery. At this time, the clamping plate 7 is in contact with the ground, and then the lifting machinery squeezes the telescopic rod 2, and the telescopic rod 2 cooperates with the mounting plate 11 to drive the two claws 17 to move downward. Since the outer wall of the movable block 9 is set to a conical structure, the two claws 17 are separated from each other through the movable block 9, so that the lower ends of the two claws 17 move to the bottom of the movable block 9, and then the two claws 17 approach each other, so that the lower ends of the two claws 17 are stuck in the lower end surface of the movable block 9, and then the telescopic rod 2 is extended, and the telescopic rod 2 cooperates with the mounting plate 11 to drive the two claws 17 to move upward, and the two claws 17 drive the movable block 9 to move upward, so that the movable block 9 moves forward. After the two clamping claws 17 are pushed away from each other by the movable block 9, the two clamping claws 17 are moved to the top of the tapered block 8, thereby releasing the clamping and fixing state of the installation cylinder 3. The installation cylinder 3 is then moved downward by gravity, and the installation cylinder 3 cooperates with the two first connecting rods 5 to drive the two support rods 4 to open outward, so that the two abutment plates 12 abut against the inner wall of the vertically placed cement pipe. Then, the lifting machinery cooperates with the telescopic rod 2 to drive the connecting plate 1 to move upward. At this time, the abutment point between the abutment plate 12 and the inner wall of the cement pipe is kept stationary by the friction force, and the connecting plate 1 continues to support the two support rods 4 outward, so that the two abutment plates 12 are tightly abutted against the inner wall of the cement pipe, thereby lifting the vertically placed cement pipe.

[0043] When hoisting the horizontally placed cement pipe, the hoisting clamp is moved to the top of the horizontally placed cement pipe by the hoisting machinery, so that the two clamping plates 7 are located on both sides of the horizontally placed cement pipe, and then the above steps are repeated to release the clamping and fixing state of the installation cylinder 3, and then the installation cylinder 3 moves downward by gravity, and the installation cylinder 3 cooperates with the two first connecting rods 5 to drive the two support rods 4 to open outward, and the two support rods 4 cooperate with the two second connecting rods 6 to drive the two clamping plates 7 to approach each other, so that the two clamping plates 7 abut against the outer wall of the horizontally placed cement pipe, and then the hoisting machinery cooperates with the telescopic rod 2 to drive the connecting plate 1 to move upward, and the gravity of the cement pipe applies a downward pulling force to the two clamping plates 7, and the two clamping plates 7 cooperate with the two second connecting rods 6 and the two support rods 4 to firmly clamp the horizontally placed cement pipe, thereby hoisting the horizontally placed cement pipe;

[0044] After moving the cement pipe to the specified position, the lifting machinery squeezes the telescopic rod 2 again, and the telescopic rod 2 cooperates with the mounting plate 11 to drive the two claws 17 to move downward, and the two claws 17 move away from each other through the conical block 8, so that the lower ends of the two claws 17 move to the bottom of the conical block 8, and then the two claws 17 approach each other, so that the lower ends of the two claws 17 are stuck on the lower end surface of the conical block 8, and then the mounting tube 3 is clamped and fixed to the mounting plate 11, and then the lifting machinery squeezes and stretches the telescopic rod 2, and the telescopic rod 2 cooperates with the clamping mechanism to drive the mounting tube 3 to move upward, so that the two support rods 4 are close to each other. At the same time, the two support rods 4 cooperate with the two second connecting rods 6 to drive the two clamping plates 7 to open, and then separate the lifting fixture from the cement pipe, thereby completing the lifting of the cement pipe.

[0045] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cement pipe lifting fixture, comprising a connecting plate (1), characterized in that: The upper end surface of the connecting plate (1) is fixedly connected to an inverted telescopic rod (2); the outer wall of the output shaft of the telescopic rod (2) is slidably connected to a mounting cylinder (3); the outer wall of the connecting plate (1) is rotatably connected to two left and right distributed support rods (4); a first connecting rod (5) is rotatably connected between the mounting cylinder (3) and the two support rods (4) via a hinge seat; one end of the support rod (4) is rotatably connected to a second connecting rod (6); the two second connecting rods (6) are rotatably connected to each other, and the other ends of the two second connecting rods (6) are fixedly connected to a clamping plate (7); The outer wall of the installation cylinder (3) is provided with a snap-fit ​​mechanism.

2. The cement pipe lifting fixture according to claim 1, characterized in that: The engaging mechanism comprises a conical block (8) fixed to the upper end of the outer wall of the mounting cylinder (3); the outer wall of the mounting cylinder (3) is movably connected to a movable block (9) located below the conical block (8); and a groove (10) matching the movable block (9) is formed on the lower end surface of the conical block (8); The lower end of the outer wall of the telescopic rod (2) is fixedly connected to a mounting plate (11), and the lower end surface of the mounting plate (11) is rotatably connected to two claws (17) distributed left and right and matching the conical block (8) and the movable block (9) through a hinge seat.

3. The cement pipe lifting fixture according to claim 1, characterized in that: An abutment plate (12) is provided on one side of the support rod (4), a sphere (13) is fixedly connected to the other end of the support rod (4), and a limiting groove (14) matching the sphere (13) is fixedly connected to one side wall of the abutment plate (12).

4. The cement pipe hoisting fixture according to claim 2, characterized in that: A counterweight (15) is fixedly connected to one side wall of the claw (17).

5. The cement pipe hoisting fixture according to claim 1, characterized in that: The clamping plate (7) is configured as an arc-shaped structure.

6. The cement pipe hoisting fixture according to claim 1, characterized in that: The upper end surface of the telescopic rod (2) is fixedly connected with a lifting lug (16).

7. The cement pipe hoisting fixture according to claim 3, characterized in that: The sphere (13) is tightly connected to the interior of the limiting groove (14).

Images