CN213356692U

CN213356692U - Ratchet switching mechanism of unpowered concrete pipe automatic lifting appliance

Info

Publication number: CN213356692U
Application number: CN202021130683.XU
Authority: CN
Inventors: 孙祥; 俞善荣; 杭志金
Original assignee: JIANGSU JIANGQIAO MACHINERY MANUFACTURING CO LTD
Current assignee: JIANGSU JIANGQIAO MACHINERY MANUFACTURING CO LTD
Priority date: 2020-06-18
Filing date: 2020-06-18
Publication date: 2021-06-04
Anticipated expiration: 2030-06-18

Abstract

The utility model relates to a ratchet switching mechanism of an unpowered concrete pipe automatic lifting appliance in the field of cement machinery manufacturing, which comprises an upper lifting beam and a lower lifting beam, wherein a grabbing plate is arranged between the upper lifting beam and the lower lifting beam in a matching way; the ratchet wheel switching mechanism is matched with the upright post between the upper lifting beam and the lower lifting beam; the utility model changes the position of the lifting point by rotating the ratchet wheel, the lifting point is automatically changed once when the lifting appliance is placed next time, and the self weight of the lifting appliance is utilized through the ratchet wheel switching mechanism to clamp and loosen the concrete pipe or the article through the meshing of the gear and the rack; the working efficiency is improved.

Description

Ratchet switching mechanism of unpowered concrete pipe automatic lifting appliance

Technical Field

The utility model relates to a ratchet switching mechanism of automatic hoist of unpowered concrete pipe in the cement machine manufacturing field.

Background

At present, a hook-type lifting appliance is adopted for generally applied concrete lifting, and two manual ends are clamped and lifted; the clamping mode easily damages the concrete interface position, the lifting can be carried out only by manual assistance, and the lifting tool can be moved away only by manual assistance after the concrete product is put down after the lifting, so that the labor efficiency is reduced, and the labor cost is increased; meanwhile, in the other method, in the hoisting operation of the cement pipe, two circular holes are usually pre-buried in the outer wall of the large cement pipe for hoisting, a pair of inserted cylindrical lifting lugs is inserted into the hoisting holes during hoisting, rope sleeves at two ends of a steel wire rope are respectively hung on the lifting lugs, and a pipe joint is hoisted by hanging a lifting hook in the middle of the steel wire rope. The lifting appliance in the prior art is simple in structure principle, but has the risk that the lifting lug slips from the inside of the lifting hole, so that great potential safety hazards exist. Secondly, the cement pipe needs frequent overturning operation in the processes of production, storage, transportation and installation, and the pipe joint is easy to interfere with the steel wire rope when overturning, so that certain difficulty is brought to the operation. In addition, when the gravity center of the pipe joint changes in the operation process, the lifting appliance is unstable and is very easy to suddenly tip over, so that accidents are easily caused in the construction process, and the device and the technology are not safe and reliable enough.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a ratchet switching mechanism of an unpowered concrete pipe automatic lifting appliance, which switches the lifting point position by rotating the ratchet wheel, the lifting point automatically switches once when the lifting appliance is placed next time, and the self weight of the lifting appliance is utilized to clamp and loosen the concrete pipe or the article through the meshing of the gear and the rack by the ratchet switching mechanism; the working efficiency is improved.

The purpose of the utility model is realized like this: a ratchet switching mechanism of an unpowered concrete pipe automatic lifting appliance comprises an upper lifting beam and a lower lifting beam, wherein a grabbing plate is arranged between the upper lifting beam and the lower lifting beam in a matched mode, a ratchet switching mechanism is arranged at the intersection of the grabbing plates and between the upper lifting beam and the lower lifting beam, a stroke adjusting bolt is arranged at the lower lifting beam in a matched mode, and a ratchet stop pin is further arranged at the ratchet switching mechanism in a matched mode; the ratchet conversion mechanism is matched with the upright post between the upper lifting beam and the lower lifting beam.

When the lifting appliance works and is actually produced and used, the lifting appliance is put down, when the lifting appliance contacts a concrete pipe or an article, the lower lifting beam stops descending, and the upper lifting beam and the ratchet switching mechanism continue descending; when a gear in the ratchet wheel switching mechanism is meshed with a rack fixed on the lower lifting beam, the gear rotates to drive the ratchet wheel to rotate, and when the position of the stroke adjusting bolt is reached, the ratchet wheel just rotates to a set angle, and at the moment, the state of the ratchet wheel does not act with a ratchet wheel stop pin due to the upward movement of the upper lifting beam; the upper lifting beam is lifted upwards, the ratchet wheel cannot rotate due to the rotation of the gear under the action of the one-way bearing and the one-way bearing, the upper lifting beam continues to be lifted upwards and acts with the lifting rotating pin shaft, finally the grabbing plate embraces the concrete pipe or the object, the upper lifting beam continues to move upwards, the gravity of the concrete pipe or the object is converted into the grabbing force of the grabbing plate on the concrete pipe or the object, the concrete pipe or the object is lifted, and the concrete pipe or the object is moved to a designated position.

The utility model has the advantages that the utility model provides a ratchet switching mechanism of an unpowered concrete pipe automatic lifting appliance, the lifting point is automatically switched once when the lifting appliance is placed once by rotating the ratchet switching lifting point position, and the self weight of the lifting appliance is utilized through the ratchet switching mechanism to clamp and loosen the concrete pipe or the article through the meshing of the gear and the rack; the working efficiency is improved.

As a further improvement of the utility model, the ratchet switching mechanism is ensured to normally and stably rotate; the ratchet switching mechanism comprises a ratchet rotating shaft, bearing seat assemblies arranged on two sides of the ratchet rotating shaft and bearing assemblies respectively matched with the bearing seat assemblies on the two sides; the inner sides of the bearing seat components on the two sides are respectively provided with a spacer bush component; the inner side of any spacer assembly is provided with a ratchet wheel in a matching way, a bearing is arranged between the ratchet wheel and the other spacer assembly, the bearing is sleeved with a gear, and the gear is also provided with a rack in a matching way.

As a further improvement of the utility model, the ratchet switching mechanism is ensured to rotate reliably and work stably; the bearing seat assembly comprises a one-way bearing seat A and a one-way bearing seat B, the bearing assembly comprises a one-way bearing A and a one-way bearing B, and the spacer bush assembly comprises a one-way bearing spacer bush A and a one-way bearing spacer bush B.

As a further improvement of the utility model, the actions of automatic switching of the lifting point can be smoothly connected for ensuring that the lifting appliance is put down once, and the work is reliable; the ratchet comprises a disc and a plurality of groups of limiting blocks distributed on the disc, and the limiting blocks are matched with ratchet stop pins.

As a further improvement of the utility model, the automatic switching of the lifting point is reliable; the ratchet wheel stop pins 11 are respectively arranged on two sides of the upright column and are matched with the limiting block components.

As a further improvement of the utility model, the ratchet switching mechanism 3 is ensured to work reliably and stably; the one-way bearing seat A is arranged on the one-way bearing A and is simultaneously arranged on the upper lifting beam; the unidirectional bearing seat B is arranged on the unidirectional bearing B and is simultaneously arranged on the upper lifting beam; the rack is arranged on the lower lifting beam.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a side view of the present invention.

Fig. 3 is an enlarged sectional view taken at a in fig. 2.

The ratchet wheel type lifting device comprises an upper lifting beam 1, a lower lifting beam 2, a ratchet wheel conversion mechanism 3, a grabbing plate 4, a stroke adjusting bolt 5, a ratchet wheel stop pin 6, a one-way bearing seat A301, a one-way bearing A302, a one-way bearing spacer A303, a ratchet wheel rotating shaft 304, a bearing 305, a gear 306, a rack 307, a ratchet wheel 308, a one-way bearing spacer B309, a one-way bearing seat B310 and a one-way bearing B311.

Detailed Description

As shown in fig. 1 to 3, the object of the present invention is achieved by: a ratchet conversion mechanism 3 of an unpowered concrete pipe automatic lifting appliance comprises an upper lifting beam 1 and a lower lifting beam 2, wherein a grabbing plate 4 is arranged between the upper lifting beam 1 and the lower lifting beam 2 in a matched mode, a ratchet conversion mechanism 3 is arranged at the intersection of the grabbing plate 4 and between the upper lifting beam 1 and the lower lifting beam 2, a stroke adjusting bolt 5 is arranged at the lower lifting beam 2 in a matched mode, and a ratchet stop pin 6 is further arranged on the ratchet conversion mechanism 3 in a matched mode; the ratchet wheel conversion mechanism 3 is matched with the upright post between the upper lifting beam 1 and the lower lifting beam 2; the ratchet switching mechanism 3 comprises a ratchet rotating shaft 304, bearing seat assemblies arranged on two sides of the ratchet rotating shaft 304 and bearing assemblies respectively matched with the bearing seat assemblies on the two sides; the inner sides of the bearing seat components on the two sides are respectively provided with a spacer bush component; a ratchet 308 is arranged on the inner side of any spacer assembly in a matching manner, a bearing 305 is arranged between the ratchet 308 and the other spacer assembly, a gear 306 is sleeved on the bearing 305, and the gear 306 is also provided with a rack 307 in a matching manner; the bearing seat assembly comprises a one-way bearing seat A301 and a one-way bearing seat B310, the bearing assembly comprises a one-way bearing A302 and a one-way bearing B311, and the spacer assembly comprises a one-way bearing spacer A303 and a one-way bearing spacer B309; the ratchet 308 comprises a disc and a plurality of groups of limiting blocks distributed on the disc, and the limiting blocks are matched with the ratchet stop pin 6; the ratchet wheel stop pins 6 are respectively arranged at two sides of the upright column and are matched with the limiting block components; the one-way bearing seat A301 is arranged on the one-way bearing A302 and is simultaneously arranged on the upper lifting beam 1; the one-way bearing seat B310 is arranged on the one-way bearing B311 and is simultaneously arranged on the upper lifting beam 1; the rack 307 is mounted on the lower lifting beam 2.

When the lifting appliance works and is actually produced and used, the lifting appliance is put down, when the lifting appliance contacts a concrete pipe or an article, the lower lifting beam 2 stops descending, and the upper lifting beam 1 and the ratchet switching mechanism 3 continue descending; when the gear 306 in the ratchet switching mechanism 3 is meshed with the rack 307 fixed on the lower lifting beam 2, the gear 306 rotates to drive the ratchet 308 to rotate, and when the position of the stroke adjusting bolt 5 is reached, the ratchet 308 just rotates to a set angle, and at the moment, the state of the ratchet 308 does not act on the ratchet stop pin 6 because the upper lifting beam 1 moves upwards; the upper lifting beam 1 is lifted upwards, the ratchet 308 cannot rotate due to the rotation of the gear 306 under the action of the one-way bearing 305 and the one-way bearing 305, the upper lifting beam 1 continues to be lifted upwards, finally the grabbing plate 4 grabs the concrete pipe or the object, the upper lifting beam 1 continues to move upwards, the gravity of the concrete pipe or the object is converted into the grabbing force of the grabbing plate 4 on the concrete pipe or the object, the concrete pipe or the object is hoisted, and the concrete pipe or the object is moved to a designated position.

The present invention is not limited to the above embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some replacements and transformations for some technical features without creative labor according to the disclosed technical contents, and these replacements and transformations are all within the protection scope of the present invention.

Claims

1. A ratchet switching mechanism of an unpowered concrete pipe automatic lifting appliance comprises an upper lifting beam (1) and a lower lifting beam (2), and is characterized in that a grabbing plate (4) is arranged between the upper lifting beam (1) and the lower lifting beam (2) in a matched mode, a ratchet switching mechanism (3) is arranged at the intersection of the grabbing plate (4) and between the upper lifting beam (1) and the lower lifting beam (2), a stroke adjusting bolt (5) is arranged at the lower lifting beam (2) in a matched mode, and a ratchet blocking pin (6) is further arranged in the ratchet switching mechanism (3) in a matched mode; the ratchet wheel conversion mechanism (3) is matched with the upright post between the upper lifting beam (1) and the lower lifting beam (2).

2. The ratchet switching mechanism of the unpowered concrete pipe automatic lifting appliance according to claim 1, wherein: the ratchet switching mechanism (3) comprises a ratchet rotating shaft (304), bearing seat assemblies arranged on two sides of the ratchet rotating shaft (304) and bearing assemblies respectively matched with the bearing seat assemblies on the two sides; the inner sides of the bearing seat components on the two sides are respectively provided with a spacer bush component; a ratchet wheel (308) is arranged on the inner side of any spacer assembly in a matched mode, a bearing (305) is arranged between the ratchet wheel (308) and the other spacer assembly, a gear (306) is sleeved on the bearing (305), and a rack (307) is further arranged on the gear (306) in a matched mode.

3. The ratchet switching mechanism of the unpowered concrete pipe automatic lifting appliance according to claim 2, wherein: the bearing seat assembly comprises a one-way bearing seat A (301) and a one-way bearing seat B (310), the bearing assembly comprises a one-way bearing A (302) and a one-way bearing B (311), and the spacer assembly comprises a one-way bearing spacer A (303) and a one-way bearing spacer B (309).

4. The ratchet switching mechanism of the unpowered concrete pipe automatic lifting appliance according to claim 1, wherein: the ratchet wheel (308) comprises a disc and a plurality of groups of limiting blocks distributed on the disc, wherein the limiting blocks are matched with the ratchet wheel stop pin (6) to be arranged.

5. The ratchet switching mechanism of the unpowered concrete pipe automatic lifting appliance according to claim 1, wherein: the ratchet wheel stop pins (6) are respectively arranged on two sides of the upright column and are matched with the limiting block components.

6. The ratchet switching mechanism of the unpowered concrete pipe automatic lifting appliance according to claim 3, wherein: the one-way bearing seat A (301) is arranged on the one-way bearing A (302) and is simultaneously arranged on the upper lifting beam (1); the one-way bearing seat B (310) is arranged on the one-way bearing B (311) and is simultaneously arranged on the upper lifting beam (1); the rack (307) is arranged on the lower lifting beam (2).