CN216540738U

CN216540738U - Pneumatic rotary lifting appliance

Info

Publication number: CN216540738U
Application number: CN202122381729.6U
Authority: CN
Inventors: 王耀龙; 赵怀彬; 谢世祥; 蔺海峰; 胡雅帅
Original assignee: Shijiazhuang Boou Metal Product Co ltd
Current assignee: Shijiazhuang Boou Metal Product Co ltd
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2022-05-17
Anticipated expiration: 2031-09-29

Abstract

A pneumatic rotary hanger is assembled with a primary hanger arranged on a conveying chain through a hinged connecting piece and comprises an upper fixed rod, a lower suspension rod, a connecting sleeve assembly, a pneumatic blade and a hanger body; the upper end of the upper fixed rod is assembled with the hinged connecting piece, and the lower end of the upper fixed rod is sleeved in the connecting sleeve component; the upper end of the lower suspension rod is sleeved in the connecting sleeve assembly, the lower suspension rod can rotate around the axis of the lower suspension rod, the lower end of the lower suspension rod is provided with the hanger body, and the middle part of the lower suspension rod is fixedly provided with the wind distribution blade. According to the utility model, the rotary lifting appliance is driven by wind power to drive the shell to rotate continuously, so that the uniform drying process of the shell is realized, and the purpose of improving the quality of precision investment casting products is achieved.

Description

Pneumatic rotary lifting appliance

Technical Field

The utility model relates to a lifting appliance, in particular to a pneumatic rotary lifting appliance for improving the uniform drying degree of a shell in the precision casting process of an investment mold.

Background

The investment precision casting is an advanced near-net-shape forming process, and its process is characterized by that firstly, a wax mould identical to the final product is made, then the wax mould is repeatedly coated with mortar sand made of refractory material, after a certain thickness and strength are formed, the wax mould is removed by using steam to form a shell body whose inner cavity is product cavity, after the shell body is roasted, molten steel is poured into its inner cavity, and after the shell body is cooled, the product with desired shape can be obtained.

In the process of the precision casting process, the shell manufacturing procedure is an important link influencing the product quality, and the quality of the shell is determined by the quality of the shell which is a bearing body for converting the wax mould and the casting. The key factor of good and bad shell quality is the drying uniformity, cracks are not easy to generate if the drying process is uniform, otherwise, the shrinkage speed difference of different parts of the shell can be caused due to non-uniform drying, and various casting defects such as cracks, cracked shells, breakout and the like can be generated finally. The traditional shell drying method has two types, firstly, the mould is hung on a special frame through a hook and dried by a fixed fan, but because the fan is a fixed position, the drying speed difference of the windward side and the leeward side of the shell is large. Secondly, the shell is suspended under a lifting appliance which is arranged on a conveying chain, the lifting appliance is fixed or driven to rotate by a friction wheel and a rack, and a fixed fan is also adopted for blowing, but when a lifting appliance rotating mode is adopted, the lifting appliance can be driven to rotate by the friction wheel and the rack only in the moving process of the conveying chain, and when the shell manufacturing process is subjected to slurry dipping and sand sticking, the conveying chain is in a stop running state, the shell stops rotating, the ratio of the advancing time and the stopping time of the conveying chain is 1:2, namely most of the time in the shell drying process is in a non-rotating state, so that the uniform drying of the shell is difficult to realize, and in addition, the problems of high equipment cost, high noise and poor equipment stability exist due to the complex structure of the lifting appliance rotating mode.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pneumatic rotary lifting appliance, which aims to utilize the wind power condition necessary for a silica sol shell making workshop and drive a shell to continuously rotate by driving the rotary lifting appliance through wind power so as to realize the uniform drying process of the shell and achieve the purpose of improving the quality of precision investment casting products.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a pneumatic rotary hanger is assembled with a primary hanger arranged on a conveying chain through a hinged connecting piece and comprises an upper fixed rod, a lower suspension rod, a connecting sleeve assembly, a pneumatic blade and a hanger body; the upper end of the upper fixed rod is assembled with the hinged connecting piece, and the lower end of the upper fixed rod is sleeved in the connecting sleeve component; the upper end of the lower suspension rod is sleeved in the connecting sleeve assembly, the lower suspension rod can rotate around the axis of the lower suspension rod, the lower end of the lower suspension rod is provided with the hanger body, and the middle part of the lower suspension rod is fixedly provided with the wind distribution blade.

The connecting sleeve assembly comprises a connecting sleeve base, a connecting sleeve cover body and two groups of pressure bearings; the connecting sleeve base and the connecting sleeve cover body are connected into a whole through bolts, a group of pressure bearings are installed between the connecting sleeve cover body and the upper fixed rod, and a group of pressure bearings are installed between the connecting sleeve base and the lower suspension rod.

According to the pneumatic rotary lifting appliance, the number of the pneumatic blades is not less than three.

According to the pneumatic rotary lifting appliance, the lifting appliance body is of an arch structure, the connecting block is arranged at the center of the lifting appliance body and assembled with the lower suspension rod through the connecting block, and the inner sides of the two ends of the arch structure are provided with the material supporting blocks matched with the shell workpiece.

According to the pneumatic rotary lifting appliance, the material supporting block is of an angle steel structure and is welded on the inner sides of the two ends of the arched lifting appliance in an upward opening posture.

The utility model relates to a pneumatic rotary lifting appliance, wherein a pneumatic blade drives a lifting appliance body and a shell workpiece to rotate through a lower suspension rod; pressure bearings are respectively arranged between a connecting sleeve cover body of the connecting sleeve assembly and the upper fixed rod and between the connecting sleeve base and the lower suspension rod, so that the lower suspension rod drives the shell workpiece to flexibly rotate, and the uniformity of the drying process of the shell workpiece under different wind power conditions is ensured; the utility model utilizes the wind power condition necessary for the shell making workshop of the silica sol shell, does not need additional power, is more energy-saving and environment-friendly and reduces the production cost. In a word, the rotary lifting appliance is driven by wind power to drive the shell to rotate continuously, so that the uniform drying process of the shell is realized, and the purpose of improving the quality of precision investment casting products is achieved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic view of the cross-sectional structure A-A of FIG. 1;

fig. 4 is a schematic view of the working state of the present invention.

The list of labels in the figure is:

1. an upper fixing rod; 2. a connecting sleeve cover body; 3. a connecting sleeve base; 4. a pressure bearing; 5. a lower suspension rod; 6. a wind blade; 7. 7-1 parts of a lifting appliance body, 7-2 parts of a connecting block and a material supporting block; 8. a shell workpiece; 9. a hinged connection; 10. a primary sling; 11. and a conveying chain.

Detailed Description

The utility model is further described with reference to the following figures and specific embodiments.

Referring to fig. 1, 2 and 4, the pneumatic rotary hanger of the utility model is assembled with a primary hanger 10 arranged on a conveying chain 1 through a hinged connecting piece 9, and comprises an upper fixed rod 1, a lower suspension rod 5, a connecting sleeve assembly, a pneumatic blade 6 and a hanger body 7; the upper end of the upper fixed rod 1 is assembled with the hinged connecting piece 9, and the lower end of the upper fixed rod is sleeved in the connecting sleeve component; the upper end of the lower suspension rod 5 is sleeved in the connecting sleeve assembly, the lower suspension rod 5 can rotate around the axis of the lower suspension rod 5, the lower end of the lower suspension rod 5 is provided with the hanger body 7, the middle part of the lower suspension rod 5 is fixedly provided with the pneumatic blades 6, and the number of the pneumatic blades 6 is preferably three.

Referring to fig. 1, the connecting sleeve assembly of the pneumatic rotary hanger of the utility model comprises a connecting sleeve base 3, a connecting sleeve cover 2 and two groups of pressure bearings 4; the connecting sleeve base 3 and the connecting sleeve cover body 2 are connected into a whole through bolts, a group of pressure bearings 4 are installed between the connecting sleeve cover body 2 and the upper fixing rod 1, and a group of pressure bearings 4 are installed between the connecting sleeve base 3 and the lower suspension rod 5.

Referring to fig. 1 and 3, the pneumatic rotary hanger of the utility model has a hanger body 7 of an arch structure, wherein a connecting block 7-1 is arranged at the center of the hanger body, the hanger body is assembled with a lower suspension rod 5 through the connecting block 7-1, and supporting blocks 7-2 matched with a shell workpiece 8 are arranged on the inner sides of two ends of the arch structure; the material supporting block 7-2 is of an angle steel structure and is welded on the inner sides of two ends of the arched lifting appliance 7 in an upward opening posture.

Referring to fig. 4, the pneumatic rotary lifting appliance can utilize the wind power condition necessary for a silica sol shell-making workshop, the pneumatic blades 6 drive the lifting appliance body 7 and the shell workpiece 8 to rotate through the lower suspension rod 5, and the lower suspension rod 5 drives the shell workpiece 8 to flexibly rotate due to the fact that the pressure bearings 4 are arranged between the connecting sleeve cover body 2 and the upper fixed rod 1 of the connecting sleeve assembly and between the connecting sleeve base 3 and the lower suspension rod 5, and in addition, the three groups of pneumatic blades 6 which are uniformly arranged can form the wind pressure difference on two sides of the pneumatic blades 6 in any direction, so that the uniformity of the drying process of the shell workpiece 8 under different wind power conditions is ensured.

Claims

1. The utility model provides a pnematic rotatory hoist, characterized by: the pneumatic lifting appliance is assembled with a primary lifting appliance (10) arranged on a conveying chain (11) through a hinged connecting piece (9), and comprises an upper fixed rod (1), a lower suspension rod (5), a connecting sleeve assembly, a pneumatic blade (6) and a lifting appliance body (7); the upper end of the upper fixed rod (1) is assembled with the hinged connecting piece (9), and the lower end of the upper fixed rod is sleeved in the connecting sleeve component; the upper end of the lower suspension rod (5) is sleeved in the connecting sleeve assembly, the lower suspension rod (5) can rotate around the axis of the lower suspension rod, a hanger body (7) is assembled at the lower end of the lower suspension rod (5), and a wind distribution blade (6) is fixedly arranged at the middle part of the lower suspension rod (5).

2. The pneumatic rotary lifting appliance according to claim 1, wherein: the connecting sleeve assembly comprises a connecting sleeve base (3), a connecting sleeve cover body (2) and two groups of pressure bearings (4); the connecting sleeve base (3) and the connecting sleeve cover body (2) are connected into a whole through bolts, a group of pressure bearings (4) are installed between the connecting sleeve cover body (2) and the upper fixing rod (1), and a group of pressure bearings (4) are installed between the connecting sleeve base (3) and the lower suspension rod (5).

3. The pneumatic rotary spreader of claim 1, wherein: the number of the wind blades (6) is not less than three.

4. The pneumatic rotary spreader of claim 1, wherein: the lifting appliance body (7) is of an arch structure, a connecting block (7-1) is arranged at the center of the lifting appliance body and is assembled with the lower suspension rod (5) through the connecting block (7-1), and material supporting blocks (7-2) matched with a shell workpiece (8) are arranged on the inner sides of two ends of the arch structure.

5. The pneumatic rotary spreader of claim 4, wherein: the material supporting block (7-2) is of an angle steel structure and is welded on the inner sides of the two ends of the lifting appliance body (7) in an upward opening posture.