CN220350851U

CN220350851U - Movable chain tensioning device and material lifting frame thereof

Info

Publication number: CN220350851U
Application number: CN202322018135.8U
Authority: CN
Inventors: 王靖; 陈永霞
Original assignee: Nanjing Forestry University
Current assignee: Nanjing Forestry University
Priority date: 2023-07-31
Filing date: 2023-07-31
Publication date: 2024-01-16
Anticipated expiration: 2033-07-31

Abstract

The utility model discloses a movable chain tensioning device and a material lifting frame thereof, which comprise a chain tensioning device and a linkage mechanism, wherein the chain tensioning device comprises a movable block, a rotating shaft is arranged at the upper end in the movable block in a penetrating way, the rotating shaft can rotate in the movable block, one end of the rotating shaft is fixedly connected with two connecting handles, a tensioning wheel is rotationally connected between the connecting handles, a chain clamping groove for fixing a chain is formed in the outer diameter surface of the tensioning wheel, a pressure handle is fixedly connected with the other end of the rotating shaft, an acute included angle is formed between the pressure handle and the tensioning wheel, and the pressure handle is connected with the lower end of the movable block through a tension spring; the utility model discloses can provide a movable overspeed device tensioner, guarantee sufficient tensioning force with the chain all the time, avoid rocking that the chain overlength produced, improve the stability that promotes the frame and promote the material.

Description

Movable chain tensioning device and material lifting frame thereof

Technical Field

The utility model relates to the technical field of material lifting devices, in particular to a movable chain tensioning device and a material lifting frame thereof.

Background

The building engineering refers to engineering entities formed by building various house buildings and auxiliary facilities thereof and installing and moving lines, pipelines and equipment matched with the building buildings. The house building is a project which has a top cover, a beam column, a wall, a foundation and can form an internal space and meet the requirements of people on production, living, study and public activities.

In carrying out the bottom building construction process, need transport the conveying to building material to make things convenient for the staff to use, traditional when transporting the panel in the building material and use most through the manual work transport, so consume a large amount of physical power, still a part is through promoting panel at floor top installation loop wheel machine, so inconvenient fine fixing, the loop wheel machine can make the material panel that lifts up rock very unsafe in the promotion in-process simultaneously, cause the potential safety hazard easily, in actual handling, often because the overlength lifting rope can't play the effect of a restriction to the hanging frame, thereby hanging the relatively big that the frame can rock.

Disclosure of Invention

The utility model aims to solve the problems that in practice, a hanging frame is often too long to limit the hanging frame due to the fact that the hanging rope cannot achieve the limiting effect on the hanging frame, so that shaking and the like are caused, and provides a movable chain tensioning device and a material lifting frame thereof.

The utility model realizes the above purpose through the following technical scheme: the utility model provides a portable chain tensioning device, includes chain tensioning device and link gear, chain tensioning device includes the movable block, the inside upper end of movable block runs through and is provided with the pivot, the pivot can be in the movable block internal rotation, two connecting handles of pivot one end fixedly connected with, rotate between the connecting handles and be connected with the take-up pulley, set up the chain draw-in groove that is used for fixed chain on the take-up pulley outer diameter face, pivot other end fixedly connected with pressure handle, pressure handle with take-up pulley between present the contained angle of acute angle, pressure handle with pass through tension spring connection between the movable block lower extreme;

the linkage mechanism comprises an upper matching block fixedly connected with the moving block, a lower matching block is movably arranged in the upper matching block, and the lower matching block can drive the upper matching block to move up and down so as to realize up-and-down follow-up of the chain tensioning device.

Further, the upper matching block is a guide rod fixed at the lower end of the moving block, and the lower end part of the guide rod is a circular boss;

the lower matching block is a guide sleeve arranged on the periphery of the guide rod, a guide groove is formed in the guide sleeve, the inner diameter of the guide groove is larger than the outer diameter of the circular boss, the guide rod penetrates through the upper end of the guide sleeve, a through hole is formed in the upper end of the guide sleeve, and the inner diameter of the through hole is larger than the outer diameter of the guide rod and smaller than the outer diameter of the circular boss.

Furthermore, damping springs used for buffering are arranged in the guide sleeve and located at the upper end and the lower end of the round boss.

Further, the upper matching block is a connecting rod fixed at the lower end of the moving block, and the lower end of the connecting rod is fixedly connected with a U-shaped plate for linkage;

the lower matching block comprises a baffle, and one end of the baffle is positioned in the opening of the U-shaped plate.

The utility model provides a material hoisting frame, includes foretell portable chain overspeed device tensioner and hoisting frame, the hoisting frame includes the upper end frame, upper end frame four corners lower surface is all fixed and is equipped with the landing leg, and upper surface four corners all is equipped with the sprocket that is used for the driven, and two of same side all be equipped with synchronous servo motor between the sprocket, with synchronous servo motor homonymy two be equipped with the counter weight board that is used for promoting the counter weight between the landing leg, the counter weight board both ends pass through the slider with landing leg sliding connection, a plurality of balancing weights of below fixedly connected with in the middle of the counter weight board, the counter weight board can slide from top to bottom between the landing leg.

Further, a lifting frame for placing materials is arranged in the middle of the lifting frame, chains are fixedly connected to four ends above the lifting frame, the other ends of the chains penetrate through the upper end frame, and after surrounding the corresponding chain wheel for one circle, the chains are fixedly connected with the weight plates below.

The beneficial effects are that: the utility model relates to a lifting frame, which has the advantages of reasonable design, simple and stable integral structure and strong practicability, improves the stability in the lifting process by carrying out four-point lifting on the lifting frame, ensures the tension of the chain by always keeping one end of the chain in a tightening state through the counterweight plates, and can also play a role in preventing falling when a motor is damaged, and a movable tensioning device can ensure that the chain above the lifting frame can shake is shorter, reduces the shaking amplitude of the lifting frame and further ensures the lifting stability.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of a lifting frame according to the present utility model;

FIG. 3 is a schematic view of a chain tensioner of the present utility model;

FIG. 4 is a schematic diagram of a linkage mechanism according to an embodiment of the present utility model;

fig. 5 is a schematic structural diagram of a linkage mechanism according to an embodiment of the present utility model.

In the figure: the device comprises a 1-moving block, a 2-rotating shaft, a 3-connecting handle, a 4-tensioning wheel, a 5-chain clamping groove, a 6-pressure handle, a 7-tension spring, an 8-linkage mechanism, a 9-chain tensioning device, a 10-lifting frame, an 11-lifting frame and a 12-chain;

81-guide rods, 82-round bosses, 83-guide sleeves, 84-through holes, 85-guide grooves, 86-damping springs, 87-connecting rods, 88-U-shaped plates and 89-baffle plates;

101-upper end frame, 102-landing leg, 103-sprocket, 104-synchronous servo motor, 105-counter weight plate, 106-counter weight.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Embodiment one:

the utility model provides a portable chain tensioning device that combines shown in fig. 3 and fig. 4, including movable block 1, the inside upper end of movable block 1 runs through and is provided with pivot 2, pivot 2 and movable block 1 pass through ball bearing and rotate to be connected, pivot 2 can rotate in movable block 1, 2 one end fixedly connected with of pivot is connected with two connecting handles 3, rotate between connecting handle 3 and be connected with take-up pulley 4, set up the chain draw-in groove 5 that is used for fixed chain position on the outer diameter face of take-up pulley 4, 2 other end fixedly connected with pressure handle 6 of pivot, present the contained angle that is an acute angle between pressure handle 6 and the take-up pulley 4, be connected through tension spring 7 between pressure handle 6 and the movable block 1 lower extreme, tension spring 7 can produce a decurrent pulling force to pressure handle 6 like this, thereby make take-up pulley 4 produce a lateral pressure to the chain, make the chain remain straight state throughout.

The lower end of the moving block 1 shown in combination with fig. 4 is provided with a linkage mechanism 8, the linkage mechanism 8 can drive the moving block 1 to move up and down, the linkage mechanism 8 comprises a guide rod 81 fixed at the lower end of the moving block 1, the lower end part of the guide rod 81 is provided with a circular boss 82, the periphery of the guide rod 81 is provided with a guide sleeve 83 matched with the guide rod 81, a guide groove 84 is formed in the guide sleeve 83, the inner diameter of the guide groove 84 is larger than the outer diameter of the circular boss 82, the guide rod 81 penetrates through the upper end of the guide sleeve 83, the upper end of the guide sleeve 83 is provided with a through hole 85, and the inner diameter of the through hole 85 is larger than the outer diameter of the guide rod 81 and smaller than the outer diameter of the circular boss 82, so that the guide rod 81 has a certain movable space in the guide sleeve 83, the phenomenon of blocking caused by deviation is reduced in the moving process, and the device size processing requirement is reduced.

The guide sleeve 83 is internally provided with the damping springs 86 which are used for buffering and are positioned at the upper end and the lower end of the circular boss 82, so that shock generated suddenly in the process from static to dynamic can be absorbed by the damping springs 86 in the moving process, and the service life of the device is prolonged.

The material lifting frame comprises the chain tensioning device 9 and the lifting frame 10, wherein the lifting frame 10 comprises an upper end frame 101, supporting legs 102 are fixedly arranged on the lower surfaces of four corners of the upper end frame 101, chains 103 used for driving are fixedly arranged on the four corners of the upper surface of the upper end frame 101, synchronous servo motors 104 are arranged between the two chain wheels 103 on the same side, one synchronous servo motor 104 controls the two chain wheels 103 to rotate in the same direction through a transmission shaft, weight plates 105 used for lifting weights are arranged between the two supporting legs 102 on the same side as the synchronous servo motor 104, two ends of each weight plate 105 are in sliding connection with the supporting legs 102 through sliding blocks, a plurality of weight blocks 106 are fixedly connected to the lower part of the middle of each weight plate 105, the weight plates 105 can slide up and down between the supporting legs 102, a lifting frame 11 used for placing materials is arranged in the middle of the lifting frame 10, chains 12 are fixedly connected to the upper ends of the lifting frame 11, the other ends of the chains 12 penetrate through the upper end frame 101, and after one circle of the corresponding chain 103, the other ends of the chains 12 are fixedly connected with the weight plates 105 below the corresponding weight plates, and therefore under the control of the synchronous servo motors 104, the weight plates 105 can be lifted up and the weight plates 105 can be kept in a tight state through the lifting frame 12.

The chain tensioning device 10 is located on each supporting leg 102, the chain 12 is slidably connected with the supporting legs 102 through the sliding blocks, the chain 12 is located in the chain clamping groove 5, the guide sleeve 83 in the linkage mechanism 8 is fixedly connected with the lifting frame 11, and therefore the chain tensioning device 10 can be guaranteed to move along with the movement of the lifting frame 11, the distance between the point, where the chain tensioning device 10 applies tensioning force to the chain 12, and the lifting frame 11 is always kept the same, and accordingly shaking caused by overlong chain 12 and insufficient tensioning force is reduced.

Embodiment two: the movable chain tensioner and the material lifting frame thereof in the second embodiment are improvements based on the above embodiments, and the technical contents disclosed in the above embodiments are not repeated, and the disclosure in the above embodiments also belongs to the disclosure in the second embodiment.

The lower extreme that combines movable block 1 that fig. 5 shows is equipped with link gear 8, and link gear 8 can drive movable block 1 and reciprocate, and link gear 8 includes the connecting rod 87 with movable block 1 lower extreme fixed connection, and connecting rod 87 lower extreme fixedly connected with is used for the U template 88 of linkage, is equipped with baffle 89 in the U template 88, baffle 89 one end and lifting frame 11 fixed connection, and the other end is located the opening of U template 88, and lifting frame 11 can also drive chain overspeed device tensioner 9 when rising and descending like this to the size requirement is lower, the removal of chain 12 of being convenient for.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. A mobile chain tensioner characterized in that: the chain tensioning device comprises a moving block, wherein the upper end of the inside of the moving block is provided with a rotating shaft in a penetrating manner, the rotating shaft can rotate in the moving block, one end of the rotating shaft is fixedly connected with two connecting handles, a tensioning wheel is rotationally connected between the connecting handles, a chain clamping groove for fixing a chain is formed in the outer diameter surface of the tensioning wheel, the other end of the rotating shaft is fixedly connected with a pressure handle, an included angle which is in an acute angle is formed between the pressure handle and the tensioning wheel, and the pressure handle is connected with the lower end of the moving block through a tension spring;

2. The movable chain tensioner as set forth in claim 1, wherein said upper mating block is a guide bar fixed to a lower end of said movable block, said guide bar having a circular boss at a lower end thereof;

3. The movable chain tensioner as set forth in claim 2, wherein damping springs for buffering are provided inside the guide sleeve at both the upper and lower ends of the circular boss.

4. The movable chain tensioner as set forth in claim 1, wherein said upper mating block is a connecting rod fixed to a lower end of said movable block, said connecting rod being fixedly connected to a U-shaped plate for linkage at a lower end thereof;

5. A material lifting frame is characterized by comprising the movable chain tensioning device according to any one of claims 1-4, wherein the lifting frame comprises an upper end frame, supporting legs are fixedly arranged on the lower surfaces of four corners of the upper end frame, chain wheels for transmission are arranged on the four corners of the upper surface, a synchronous servo motor is arranged between the two chain wheels on the same side, a weight plate for lifting a weight is arranged between the two supporting legs on the same side as the synchronous servo motor, two ends of the weight plate are in sliding connection with the supporting legs through sliding blocks, a plurality of balancing weights are fixedly connected to the lower part in the middle of the weight plate, and the weight plate can slide up and down between the supporting legs.

6. The material lifting frame according to claim 5, wherein a lifting frame for placing materials is arranged in the middle of the lifting frame, chains are fixedly connected to four ends above the lifting frame, the other ends of the chains penetrate through the upper end frame, and after surrounding the corresponding chain wheel for one circle, the chains are fixedly connected with the weight plates below.