CN219860089U

CN219860089U - Pneumatic lifting appliance

Info

Publication number: CN219860089U
Application number: CN202320878320.1U
Authority: CN
Inventors: 常叶
Original assignee: Nanjing Liankong Intelligent Additive Research Institute Co ltd
Current assignee: Nanjing Liankong Intelligent Additive Research Institute Co ltd
Priority date: 2023-04-19
Filing date: 2023-04-19
Publication date: 2023-10-20
Anticipated expiration: 2033-04-19

Abstract

The utility model discloses a pneumatic lifting appliance, which relates to the technical field of lifting appliances and comprises at least two lifting units and auxiliary beams for connecting the lifting units, wherein each lifting unit comprises a main beam and a limiting bracket, pull rods are arranged on each limiting bracket, a locking mechanism and an anti-falling mechanism are arranged on the main beam, and hooks are arranged at the ends, away from each other, of the two pull rods. According to the utility model, the safety of lifting the workpiece is improved by arranging the anti-falling mechanism, and the further arranged travel switch can also enable the pneumatic lifting appliance to automatically confirm grabbing, so that the pneumatic lifting appliance is convenient to use.

Description

Pneumatic lifting appliance

Technical Field

The utility model relates to the technical field of lifting appliances, in particular to a pneumatic lifting appliance.

Background

At present, most types of lifting appliances are manual in structure, a hook and a workpiece are required to be locked manually, an operator needs to evaluate whether the lifting appliance is in place or not when the lifting appliance is used for grabbing the workpiece, and when the lifting appliance is used for grabbing the workpiece, the operation is complex; the structure is heavy, and no anti-falling mechanism is arranged, so that the potential safety hazard is large.

When the lifting appliance grabs the workpieces, accurate positioning cannot be realized on a plurality of workpieces, no anti-falling mechanism exists, and once the appearance of the workpieces is changed, the lifting appliance also needs to be replaced with a positioning device or even redesigned.

The plate lifting appliance disclosed in publication number CN104044995a comprises a main beam, a cross beam, a lifting hook and other parts, wherein the plate lifting appliance is not provided with an anti-falling mechanism, can not automatically confirm grabbing, and has poor adaptability to different workpieces.

Disclosure of Invention

The utility model provides a pneumatic lifting appliance which at least solves part of the problems in the prior art.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a pneumatic hoist, includes two at least hoist and mount units and is used for connecting hoist and mount unit's auxiliary beam, hoist and mount unit includes girder and symmetry setting two sets of limit position supports on the girder, equal slidable mounting has the pull rod on every set of limit position support, is provided with the locking mechanism that is used for driving two pull rods to be close to each other or keep away from each other on the girder, and two pull rods one end that keep away from each other all is provided with the couple, is provided with the anti-falling mechanism that can prevent that the pull rod kept away from each other on the girder.

Preferably, the locking mechanism comprises a locking cylinder arranged in the middle of the main beam, the output end of the locking cylinder is provided with a hinge seat, two sides of the hinge seat are symmetrically hinged with connecting rods, and one ends of the two connecting rods, which are far away from the hinge seat, are respectively hinged on the two pull rods.

Preferably, the anti-falling mechanism comprises a limiting plate hinged on the main beam and a fixed plate arranged on the hinged seat, wherein a limiting cylinder is arranged on the limiting plate, the output end of the limiting cylinder is hinged on the fixed plate, a first limiting tooth is arranged on the fixed plate, and a second limiting tooth capable of being buckled with the first limiting tooth is arranged on the limiting plate.

Preferably, workpiece limiting mechanisms are arranged at two ends of the main beam, each workpiece limiting mechanism comprises a limiting seat arranged on the main beam and a travel switch arranged on the limiting seat, a stop screw is arranged on the limiting seat in a threaded manner, and the position of the limiting seat on the main beam can be adjusted.

Preferably, the limiting seat is provided with a first limiting rod and a second limiting rod which are matched with the workpiece in shape.

Preferably, the limit bracket is provided with at least two rollers, and the pull rod passes through the space between the two rollers.

Preferably, the main beam and the auxiliary beam can be fixedly connected through an adjusting and locking mechanism, the adjusting and locking mechanism comprises a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate clamp the main beam and the auxiliary beam from two sides respectively, the first clamping plate and the second clamping plate are in bolt connection, and limit bolts which can tightly prop the main beam and the auxiliary beam are arranged on the first clamping plate in a threaded manner.

Preferably, the auxiliary beam is provided with an armrest, and the main beam is provided with a chain.

Compared with the prior art, the utility model has the beneficial effects that:

1. the main beam, the auxiliary beam and the pull rod are arranged, and the pull rod can move along the limiting support on the main beam under the drive of the locking mechanism, so that the hook can hook and lock a workpiece, and the grabbing of the workpiece is completed;

2. through setting up anti-falling mechanism, spacing cylinder can drive spacing tooth two and spacing tooth one lock to restrict the relative movement between girder and the articulated seat, guarantee that pneumatic hoist can not lead to the work piece to fall because of locking cylinder inefficacy, increase the security;

3. the relative positions of the two main beams and the positions of the two workpiece limiting mechanisms on the same main beam can be adjusted by arranging the adjusting and locking mechanism and the workpiece limiting mechanism with the changeable positions, so that the workpieces are lifted correspondingly;

4. through setting up travel switch, when pneumatic hoist descends to a certain height, automatic start locking cylinder grabs the piece, need not the manual work and confirms to snatch, convenient to use.

Drawings

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

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic view of the structure of the hoisting unit of the present utility model;

FIG. 4 is a partial enlarged view at B in FIG. 3;

FIG. 5 is a partial schematic view of a workpiece stop mechanism of the present utility model;

fig. 6 is a schematic structural view of a workpiece limiting mechanism according to the present utility model.

In the figure: 1. the main beam, 2, the auxiliary beam, 3, the regulation locking mechanism, 31, the first splint, 32, the second splint, 33, the limit bolt, 4, the limit bracket, 5, the gyro wheel, 6, the pull rod, 7, the connecting rod, 8, locking cylinder, 9, articulated seat, 10, limiting plate, 11, limiting cylinder, 12, fixed plate, 13, spacing tooth one, 14, spacing tooth two, 15, couple, 16, the limit seat, 17, first gag lever post, 18, stop screw, 19, mechanical valve, 20, the second gag lever post, 21, handrail, 22, chain.

Detailed Description

The following description of the embodiments of the present utility model will be made more fully hereinafter with reference to the accompanying drawings, in which embodiments of the utility model are shown, in which some, but not all embodiments of the utility model are shown. 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.

As shown in fig. 1 to 6, the pneumatic lifting appliance provided by the embodiment of the utility model comprises two parallel lifting units and two parallel auxiliary beams 2, wherein each lifting unit comprises a main beam 1, four limiting brackets 4 and two pull rods 6, the four limiting brackets 4 can be divided into two groups, and the two groups of limiting brackets 4 are symmetrically fixed on the main beam 1. Each auxiliary beam 2 is connected with two main beams 1, and the auxiliary beams 2 and the main beams 1 are fixedly connected through an adjusting and locking mechanism 3.

Specifically, the adjusting and locking mechanism 3 includes two clamping plates, namely a first clamping plate 31 and a second clamping plate 32, the first clamping plate 31 and the second clamping plate 32 are respectively located on one side of the main beam 1 and the auxiliary beam 2, which are far away from each other, the first clamping plate 31 and the second clamping plate 32 are in bolt connection and limit the main beam 1 and the auxiliary beam 2 between the two clamping plates, a limit bolt 33 is arranged on one clamping plate in a threaded manner, the end of the limit bolt 33 can be abutted against the main beam 1 or the auxiliary beam 2 through twisting the limit bolt 33, so that the main beam 1 and the auxiliary beam 2 are firmly fixed between the two clamping plates, and the relative positions of the main beam 1 and the auxiliary beam 2 can be adjusted through loosening the limit bolt 33.

Two rollers 5 are rotatably arranged on each limiting support 4, two pull rods 6 are movably inserted between the two rollers 5 of each limiting support 4 of the two groups of limiting supports 4, and the rollers 5 can limit the pull rods 6 in the upper and lower directions, but do not affect the horizontal movement of the pull rods 6.

The two pull rods 6 are fixedly provided with hooks 15 at the ends far away from each other. Two chains 22 are arranged on each main girder 1, and the other ends of the chains 22 can be mounted on hoisting equipment such as a gantry crane or a crane. When the two pull rods 6 are pulled close to each other by using the locking mechanism, the hooks 15 at the end parts of the pull rods 6 can hook the edge of the workpiece and can clamp the workpiece, so that the workpiece is prevented from falling.

The above functions can be realized by any locking mechanism that can bring the two tie rods 6 close to or far from each other, for example, a cylinder is directly provided on one of the tie rods 6, and the output end of the cylinder is connected to the other tie rod 6, so that the two tie rods 6 can be driven to move relatively when the cylinder stretches.

In the embodiment of the utility model, the locking mechanism comprises a locking cylinder 8 fixedly arranged in the middle of the main beam 1, two groups of limiting brackets 4 are symmetrically arranged at two sides of the locking cylinder 8, a hinging seat 9 is fixedly arranged at the output end of the locking cylinder 8, two sides of the hinging seat 9 are respectively hinged with a connecting rod 7, the other end of the connecting rod 7 is respectively hinged with a pull rod 6, and the two pull rods 6 and the two connecting rods 7 are also symmetrical relative to the locking cylinder 8, so that when the locking cylinder 8 is started, the two pull rods 6 can be driven to move on the limiting brackets 4 through the connecting rods 7, and the distance between the two hooks 15 is changed.

Considering that emergency situations, such as power failure or gas interruption of the line of the locking cylinder 8, can occur, the locking cylinder 8 is disabled, the hinging seat 9 is dropped, the pull rod 6 is loosened, and the workpiece falls. The utility model also provides an anti-falling mechanism, in particular to the anti-falling mechanism which comprises a limiting plate 10 hinged on the main beam 1 and a fixed plate 12 fixed on the hinged seat 9, wherein the fixed plate 12 is provided with a limiting tooth I13. The limiting plate 10 is fixedly provided with the limiting cylinder 11, and the output end of the limiting cylinder 11 is hinged to the fixed plate 12, so that when the limiting cylinder 11 works, the included angle between the limiting plate 10 and the fixed plate 12 can be changed. The limiting plate 10 is provided with a limiting tooth two 14. When the limiting cylinder 11 draws the included angle between the limiting plate 10 and the fixed plate 12 to be small, the limiting teeth II 14 can be buckled on the limiting teeth I13. Therefore, when the locking cylinder 8 fails, the limiting teeth II 14 are buckled on the limiting teeth I13, so that the relative positions of the limiting plate 10 and the fixing plate 12 are fixed, the hinging seat 9 is prevented from falling down, and the hook 15 is prevented from being separated from a workpiece.

Two ends of the main beam 1 are respectively provided with a workpiece limiting mechanism, the workpiece limiting mechanism specifically comprises a limiting seat 16 and a travel switch, one end of the limiting seat 16 is fixed on the main beam 1 through bolts, and the position of the limiting seat 16 on the main beam 1 can be changed through elastic bolts. The travel switch is installed in one side of the limit seat 16, and the travel switch used in this embodiment is a mechanical valve 19, when the contact of the mechanical valve 19 abuts against a workpiece, a signal can be sent out, and the locking cylinder 8 is started after receiving the signal to lock and hang the workpiece.

The stop screw 18 is further arranged on the limit seat 16 in a threaded manner, the stop screw 18 plays a physical limit role, and when the bottom of the stop screw 18 abuts against a workpiece, the pneumatic lifting appliance can not descend any more.

For convenient positioning, the first limiting rod 17 and the second limiting rod 20 are further arranged on two sides of the limiting seat 16, a workpiece can be hoisted according to specific requirements, and the first limiting rod 17 and the second limiting rod 20 which correspond to the positions in shape are installed, so that the pneumatic lifting appliance can be positioned conveniently, and the hook 15 can be hung at the corresponding position of the workpiece.

When an operator operates the pneumatic lifting appliance to grab a workpiece:

the operator prepares to grasp the workpiece by controlling the armrest 21 to move the pneumatic spreader directly over the workpiece.

The operator manually controls the position of the armrest 21, the pneumatic lifting appliance descends, and when the workpiece limiting mechanism touches the workpiece, namely, when the first limiting rod 17 and the second limiting rod 20 touch the workpiece, the pneumatic lifting appliance can change the position in a small range, and the accurate positioning of the relative position relationship between the pneumatic lifting appliance and the workpiece is completed.

The pneumatic lifting appliance continues to descend to a certain height, the mechanical valve 19 touches the surface of the workpiece, a signal is transmitted, the locking cylinder 8 is started, the pull rod 6 is driven to tighten, the hook 15 hooks the edge of the workpiece, and the grabbing piece is completed. At this time, the limiting cylinder 11 can be started to lock the fixing plate 12, so that the hinge seat 9 is prevented from falling down.

The operator manually controls the arm rest 21 to move the workpiece to the next part placement area.

If the appearance of the workpiece is changed, the spacing bolts 33 of the locking mechanism 3 can be adjusted to change the distance between the hooks 15 on the two main beams 1. Adjusting the bolt on the workpiece limiting mechanism, moving the limiting seat 16, can change the lateral position of the workpiece limiting mechanism.

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. The utility model provides a pneumatic hoist, its characterized in that, including two at least hoist and mount units and be used for connecting hoist and mount unit assist roof beam (2), hoist and mount unit includes girder (1) and symmetry setting two sets of spacing support (4) on girder (1), every group equal slidable mounting has pull rod (6) on spacing support (4), be provided with on girder (1) and be used for driving two pull rods (6) to be close to each other or the locking mechanism that keeps away from each other, two the one end that pull rod (6) kept away from each other all is provided with couple (15), be provided with the anti-falling mechanism that can prevent pull rod (6) kept away from each other on girder (1).

2. A pneumatic lifting appliance as claimed in claim 1, characterized in that the locking mechanism comprises a locking cylinder (8) arranged in the middle of the main beam (1), the output end of the locking cylinder (8) is provided with a hinging seat (9), two sides of the hinging seat (9) are symmetrically hinged with connecting rods (7), and one ends of the two connecting rods (7) far away from the hinging seat (9) are respectively hinged on the two pull rods (6).

3. A pneumatic lifting appliance as claimed in claim 2, characterized in that the anti-falling mechanism comprises a limiting plate (10) hinged on the main beam (1) and a fixed plate (12) arranged on the hinged seat (9), a limiting cylinder (11) is arranged on the limiting plate (10), the output end of the limiting cylinder (11) is hinged on the fixed plate (12), a first limiting tooth (13) is arranged on the fixed plate (12), and a second limiting tooth (14) capable of being buckled with the first limiting tooth (13) is arranged on the limiting plate (10).

4. A pneumatic lifting appliance according to claim 1, wherein workpiece limiting mechanisms are arranged at two ends of the main beam (1), each workpiece limiting mechanism comprises a limiting seat (16) arranged on the main beam (1) and a travel switch arranged on the limiting seat (16), a stop screw (18) is arranged on the limiting seat (16) in a threaded manner, and the position of the limiting seat (16) on the main beam (1) can be adjusted.

5. A pneumatic lifting appliance according to claim 4, characterized in that the limit seat (16) is provided with a first limit lever (17) and a second limit lever (20) which are in form fit with the workpiece.

6. A pneumatic lifting appliance according to claim 1, characterized in that the limit bracket (4) is provided with at least two rollers (5), and the pull rod (6) passes between the two rollers (5).

7. A pneumatic lifting appliance according to claim 1, wherein the main beam (1) and the auxiliary beam (2) are fixedly connected through an adjusting and locking mechanism (3), the adjusting and locking mechanism (3) comprises a first clamping plate (31) and a second clamping plate (32), the first clamping plate (31) and the second clamping plate (32) clamp the main beam (1) and the auxiliary beam (2) from two sides respectively, the first clamping plate (31) and the second clamping plate (32) are in bolt connection, and a limit bolt (33) capable of propping the main beam (1) and the auxiliary beam (2) is arranged on the first clamping plate (31) in a threaded manner.

8. A pneumatic lifting appliance according to claim 1, characterized in that the auxiliary beam (2) is provided with handrails (21) and the main beam (1) is provided with a chain (22).