CN111299444A - Mixing drum forming correction device - Google Patents
Mixing drum forming correction device Download PDFInfo
- Publication number
- CN111299444A CN111299444A CN201911022439.3A CN201911022439A CN111299444A CN 111299444 A CN111299444 A CN 111299444A CN 201911022439 A CN201911022439 A CN 201911022439A CN 111299444 A CN111299444 A CN 111299444A
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- Prior art keywords
- mixing drum
- oil
- pressing
- oil cylinder
- correction device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D51/00—Making hollow objects
- B21D51/16—Making hollow objects characterised by the use of the objects
- B21D51/18—Making hollow objects characterised by the use of the objects vessels, e.g. tubs, vats, tanks, sinks, or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/003—Positioning devices
Abstract
A mixing drum forming correction device comprises a pressing platform, wherein n pressing devices used for being matched with a squirrel cage tool to press a front cone of a mixing drum downwards are uniformly distributed on the pressing platform along the same circle circumferential direction, n is an even number, and the distance from the top end of each pressing device to the circle center is smaller than the semi-diameter of the lower bottom circle of the front cone of the mixing drum; each pressing device comprises a supporting seat and a link mechanism, the link mechanism comprises an oil cylinder and a connecting rod hinged to the top end of a piston rod of the oil cylinder through a piston rod hinged shaft, an oil cylinder seat is hinged to an oil cylinder fixing seat through the oil cylinder hinged shaft, a through hole is formed in the connecting rod, and the through hole is hinged to a fixing seat vertically arranged at the upper end of the supporting seat through a middle hinged shaft of the connecting rod; the hydraulic system is used for driving each connecting rod mechanism; the novel forming correction device effectively improves the forming correction efficiency of the mixing drum; the risk of rebounding after the mixing drum is corrected is reduced, the product quality of the mixing drum is improved, and the process flow of mixing drum manufacturing is optimized.
Description
Technical Field
The invention relates to the field of machining, in particular to a novel forming correction device for a mixing drum of a concrete mixer truck.
Background
At present, most of forming correction means of a mixing drum are as follows; firstly, the squirrel cage tool is continuously knocked by the hammer, so that the squirrel cage tool is attached to a front cone of the mixing drum; the method is time-consuming and labor-consuming, and has great damage to the squirrel cage tool; the other way is that after the squirrel cage tool is hoisted to the front cone of the mixing drum, as many as several tons of steel billets or iron blocks are hoisted to the upper part of the squirrel cage tool to fall to the top of the squirrel cage tool, so that the squirrel cage tool is forced to be attached to the front cone of the mixing drum under the impact force of the steel billets; the method is dangerous, and has great damage to the travelling crane and the tool; the other way is that by means of an independent compaction trolley, after the squirrel cage tool falls to the front cone of the mixing drum, the trolley is pushed to the position where the squirrel cage tool falls to the position where the front cone of the mixing drum is not attached, and a manual hydraulic cylinder on the trolley is operated to complete the attachment compaction of the squirrel cage tool and the front cone of the mixing drum; according to the method, the trolley is required to be pushed for many times to find the non-joint position of the falling installation of the squirrel cage tool and the front cone of the mixing drum, and the manual hydraulic cylinder on the trolley is operated for many times, so that the operation process is relatively complicated, the operation time is relatively long, and the front cone of the mixing drum has the risk of rebounding after correction.
Disclosure of Invention
In order to solve the technical defects, the invention provides the mixing drum forming correction device, which effectively improves the working efficiency, and the front cone of the mixing drum is adapted to deformation after being corrected, so that the risk of resilience of the mixing drum is reduced, and the damage to a travelling crane and a squirrel cage tool is reduced.
A mixing drum forming correction device comprises a pressing platform, wherein n pressing devices used for being matched with a squirrel cage tool to press a front cone of a mixing drum downwards are uniformly distributed on the pressing platform along the same circle circumferential direction, n is an even number, and the distance from the top end of each pressing device to the circle center is smaller than the semi-diameter of the lower bottom circle of the front cone of the mixing drum;
each pressing device comprises a supporting seat and a link mechanism, the link mechanism comprises an oil cylinder and a connecting rod hinged to the top end of a piston rod of the oil cylinder through a piston rod hinged shaft, an oil cylinder seat is hinged to an oil cylinder fixing seat through the oil cylinder hinged shaft, a through hole is formed in the connecting rod, and the through hole is hinged to a fixing seat vertically arranged at the upper end of the supporting seat through a middle hinged shaft of the connecting rod;
the hydraulic system comprises an oil tank, an oil pump arranged at the oil outlet end of the oil tank, a motor and a valve group for controlling the direction of hydraulic oil, wherein the outlet end of the oil pump is connected with two oil inlet and return ports of the oil cylinder of each link mechanism through oil pipes; the right electricity obtaining end and the left electricity obtaining end of each electro-hydraulic reversing valve are respectively connected with a voltage source through a control switch.
And each pressing device is provided with a fan-shaped falling area.
Four pressing devices are uniformly distributed on the pressing platform along the same circle and the circumferential direction.
The pressing platform is of a cross structure formed by welding a long beam and two short beams, the long beam and the two short beams are rectangular square tubes or H-shaped steel, and the upper surfaces of the cross structures are flush; the supporting seats of the four pressing devices are fixedly arranged on the upper plane of the pressing platform.
A pressing block is fixed on the lower end face of the top end of each connecting rod; the contact surface of the lower end of the pressing block and the upper surface of the large-end flange of the squirrel cage tool is provided with a buffering wear-resistant layer.
The pressing block is of a regular prism structure, and the area of the lower surface of the pressing block is not smaller than 40 cm.
The buffering wear-resistant layer is made of rubber.
The oil inlet end of the oil pump is provided with an oil suction filter, the oil suction filter is arranged in the oil tank, the oil tank is further provided with a liquid level meter, a thermometer and an air filter, and two oil inlet oil pipes of the oil cylinder are respectively provided with a pressure gauge.
An oil tank, an oil pump and a motor in the hydraulic system are arranged close to the center of the pressing platform; each control switch is correspondingly arranged at the control switch arrangement end of the supporting seat.
The squirrel cage tool is formed by welding a plurality of mutually parallel triangular angle steels or channel steels, positioning rings, rib plates, a large end flange and a small end flange, and a cavity is formed inside the squirrel cage tool, and the taper of the cavity is the same as that of a front cone of the mixing drum; the inner diameter of a large-end flange of the squirrel cage tool is 4mm smaller than the maximum diameter of a front cone of the mixing drum; the height of the cavity of the squirrel cage tool is 10mm higher than the front cone of the mixing drum.
The invention has the beneficial effects that: compared with the prior art, the invention has the advantages that:
(1) the manufacturing efficiency of the mixing drum is greatly improved;
(2) the front cone of the mixing drum is adapted to deformation after being corrected by the pressure maintaining after correction, so that the risk of resilience of the mixing drum is reduced;
(3) the damage to the squirrel cage tool and the hoisting travelling crane can be effectively reduced.
Drawings
FIG. 1 is a schematic diagram of a mixing drum after being mounted to a press-fitting platform in a front conical manner;
FIG. 2 is a schematic diagram of a process of dropping the mixing drum squirrel cage tool to a front cone of the mixing drum;
FIG. 3 is a schematic diagram of the mixing drum squirrel cage tool after falling onto a front cone of the mixing drum and being compressed;
FIG. 4 is a schematic view of the construction of the compacting apparatus;
FIG. 5 is a schematic diagram of a hydraulic system;
FIG. 6 is a schematic view of a front cone mounting area of a mixing drum;
in the figure: 1. the device comprises a hydraulic system, a valve group, a control switch, a pressing device, a squirrel cage tool 6, a mixing drum front cone, a cylinder 7, a cylinder 8, a connecting rod mechanism 9, a pressing platform 10, a pressing block 11 and a large-end flange of the squirrel cage tool; 12. the device comprises an oil tank, 13, a thermometer, 14, an air filter, 15, an oil absorption filter, 16, an oil pump, 17, a one-way valve, 18, an electromagnetic overflow valve, 19, an electro-hydraulic directional valve, 20, a right power-obtaining end, 21, a left power-obtaining end, 22, a pressure gauge, 23 and an electromagnetic overflow valve power-obtaining end; 24. control switch arrangement end, 25, mouse cage frock big end flange binding face, 26, hydro-cylinder fixing base, 27, hydro-cylinder articulated shaft, 28, piston rod articulated shaft, 29, articulated shaft in the middle of the connecting rod, 30, fixing base, 31, connecting rod, 32, supporting seat, 33, fan-shaped falling installation district, 34, starting switch, 35, pump station arrangement district, 36, motor, 37, valves installing zone.
Detailed Description
The technical solution in the embodiments of the present invention will now be clearly and completely described with reference to the accompanying drawings, which are simplified schematic drawings and only schematically illustrate the basic structure of the present invention.
In fig. 1, the device comprises a pressing platform 9, an even number of pressing devices 4 for pressing a front cone 6 of a mixing drum downwards in cooperation with a squirrel cage tool 5 are uniformly distributed on the pressing platform 9 along the same circle circumferential direction, the distance from the top end of each pressing device 4 to the circle center is smaller than the diameter of a circle on the lower bottom of the front cone 6 of the mixing drum, and the pressing platform 9 is arranged on the pressing platform 9; a hydraulic system 1 for driving each link mechanism 8;
furthermore, four pressing devices 4 are uniformly distributed on the pressing platform 9 along the same circular circumferential direction, the pressing platform 9 is of a cross structure formed by welding a long beam and two short beams, the long beam and the two short beams are rectangular square tubes or H-shaped steel, and the upper surfaces of the cross structure are level to provide enough strength and stability for the whole device; the supporting seats 32 of the four pressing devices 4 are fixedly arranged on the upper plane of the pressing platform 9.
In fig. 2 and 3, the mouse cage tool 5 is formed by welding a plurality of mutually parallel triangular angle steels or channel steels, positioning rings, rib plates, a large end flange 11 and a small end flange, and a cavity is arranged inside the mouse cage tool 5, and the taper of the cavity is the same as that of the front cone 6 of the mixing drum; the inner diameter of a large-end flange 11 of the squirrel cage tool is 4mm smaller than the maximum diameter of a front cone 6 of the mixing drum; the height of the cavity of the squirrel cage tool 5 is 10mm higher than that of the front cone 6 of the mixing drum.
In fig. 4, each pressing device 4 comprises an oil cylinder 7, a link mechanism 8, a pressing block 10 and a supporting seat 32; the cylinder seat of the oil cylinder 7 is connected with the oil cylinder fixing seat 26 through an oil cylinder hinge shaft 27 to form a hinge point 1, the head of a piston rod of the oil cylinder 7 is connected with a connecting rod 31 through a piston rod hinge shaft 28 to form a hinge point 2, the connecting rod 31 is connected with a fixing seat 30 through a connecting rod middle hinge shaft 29 to form a hinge point 3, and the hinge point 1, the hinge point 2, the hinge point 3 and the connecting rod 31 form a connecting rod mechanism 8; the supporting seat 32 is fixed on the pressing platform 9; a pressing block 10 is fixed on the lower end face of the top end of each connecting rod 31, the pressing block 10 is of a regular prism structure, the area of the lower surface of the pressing block 10 is larger than 40cm, a buffering wear-resistant layer is arranged on the contact surface of the lower end of the pressing block 10 and the upper surface of the big end flange 11 of the mouse cage tool, and the buffering wear-resistant layer is made of rubber so as to avoid damage to the big end flange 11 of the mouse cage tool and damage to the connecting rod mechanism 8.
In fig. 5, a hydraulic system 1 includes an oil tank 12, a liquid level meter, a thermometer 13, an air filter 14, an oil pump 16 installed at an oil outlet end of the oil tank 12, a motor 36, and a valve group 2 for controlling the direction of hydraulic oil; the outlet end of the oil pump 16 is connected with two oil inlets of the oil cylinders 7 of each link mechanism 8 through oil pipes, the valve group 2 comprises a check valve 17 arranged on the oil pipe at the outlet end of the oil pump 16, an electro-hydraulic directional valve 19 arranged at the oil inlet end of each oil cylinder 7 and an electromagnetic overflow valve 18, a return pipeline is led out from the oil pipe at the rear end of the check valve 17, the electromagnetic overflow valve 18 is arranged on the return pipeline, and the electromagnetic overflow valve 18 is used for adjusting the working pressure of the oil cylinders 7 on the hydraulic system 1; the right power-obtaining end 20 and the left power-obtaining end 21 of each electro-hydraulic directional valve 19 are respectively connected with a voltage source through a control switch 3; an oil suction filter 15 is arranged at the oil inlet end of the oil pump 16, and the oil suction filter 15 is arranged inside the oil tank 12;
the hydraulic system 1 is started, the starting switch 34 is operated to enable the electricity obtaining end 23 of the electromagnetic overflow valve to obtain electricity, the electricity obtaining end 20 on the right side of the opposite electro-hydraulic directional valve is enabled to obtain electricity by controlling each control switch 3, the piston rod of the corresponding oil cylinder 7 is driven to extend out, the top end of the connecting rod 31 is pushed to press downwards, the pressing block 10 is driven to move downwards, the large-end flange 11 of the mouse cage tool is pushed to be attached and pressed with the upper plane of the supporting seat 32 downwards, and the control switches 3 are arranged at the control switch arrangement end 24.
In fig. 6, the total height of a pump station formed by the oil tank 12, the oil pump 16 and the motor 36 in the hydraulic system 1 is not more than 600mm, and the pump station is arranged close to the center of the pressing platform 9 and can be arranged at a pump station arrangement area 35; the starting switch 34 of the electromagnetic overflow valve 18 is arranged on the outer side wall of the end part of the supporting seat 32, the valve group 2 is arranged in a space between the upper plane of the pressing platform 9 and the upper plane of the supporting seat 32, namely a valve group mounting area 37, and the valve group 2 and an oil pipe of the oil cylinder 7 are arranged in an inner cavity of the supporting seat 32; the upper planes of the four pressing devices 4, namely the large-end flange binding faces 25 of the squirrel cage tooling, are brushed with a fan-shaped falling region 33 in which a front cone 6 of a mixing drum falls and is aligned with the center of the pressing platform 9, and the width of the fan-shaped falling region 33 is 25 mm; when the front cone 6 of the mixing drum falls and is installed, the large end of the front cone is enabled to fall into the fan-shaped falling area 33, so that the front cone of the mixing drum is ensured to be aligned with the center of the pressing platform 9 to fall and be installed quickly.
The use process comprises the following steps: firstly, hoisting a front cone 6 of a mixing drum to a pressing device 4 (4 groups of the pressing devices 4 are fixedly arranged on a pressing platform 9), and enabling the front cone 6 of the mixing drum to fall in a fan-shaped falling area 33 of the pressing device 4 coated with paint, so as to realize quick falling; after the front cone 6 of the mixing drum falls on the pressing device 4, hoisting the squirrel cage tool 5 to the front cone 6 of the mixing drum; then starting the hydraulic system 1, and observing the pressure of a pressure gauge 22, wherein the electricity obtaining end 23 of the electromagnetic overflow valve and the electricity obtaining end of the electro-hydraulic reversing valve are not electrified; according to the falling state of the squirrel cage tool 5 on the front cone 6 of the mixing drum, the starting switch 34 is operated to electrify the electricity-obtaining end 23 of the electromagnetic overflow valve, the control switch of the symmetrical electricity-obtaining end 20 is operated to be opened, the electricity-obtaining end 20 of the electro-hydraulic reversing valve on the corresponding pressing device 4 is electrified, high-pressure oil enters a rodless cavity of the oil cylinder 7, a piston rod of the oil cylinder 7 is driven to extend out, the connecting rod mechanism 8 is driven to move, the connecting rod 31 rotates around a middle hinge shaft 29 of the connecting rod, a pressing block 10 fixed on the connecting rod 31 is driven to move downwards, the pressing block 10 presses the upper plane of a large-end flange 11 of the squirrel cage tool 5, the squirrel cage tool 5 moves downwards along the outer wall of the front cone 6 of the mixing drum, the lower plane of the large-end flange 11 of the squirrel cage tool is forced to be coincident with the plane of the maximum diameter of the large-end flange of the mixing drum 6 and simultaneously coincident with, the control switch corresponding to the right power-on end 20 is operated again to be closed, so that the right power-on end 20 of the corresponding electro-hydraulic reversing valve is not powered, namely the electro-hydraulic reversing valve is positioned at the middle position, high-pressure oil does not enter a rodless cavity of the oil cylinder 7 at the moment, a piston rod of the oil cylinder 7 does not extend out, certain pressure is kept, and the pressing block 10 continues to act on the upper plane of the large-end flange 11 of the squirrel cage tool; when the pressing blocks 10 on the four pressing devices 4 finish the operation, maintaining the pressure for 2-5 min; so that the non-circular place of the front cone of the mixing drum is corrected by the extrusion motion, and the corrected front cone 6 of the mixing drum is adapted to the deformation after certain stress is released; when the front cone 6 of the mixing drum finishes the correction operation and maintains the pressure for a period of time, sequentially and symmetrically operating the control switches at the left power acquisition end 21 to open, enabling the left power acquisition end 21 of the electro-hydraulic reversing valve on the corresponding pressing device 4 to acquire power, enabling high-pressure oil to enter a rod cavity of the oil cylinder 7, thereby driving a piston rod of the oil cylinder 7 to retract and driving the link mechanism 8 to move, namely enabling the link 31 to reversely rotate around a middle hinge shaft 29 of the link, driving a pressing block 10 fixed on the link 31 to move upwards and to be separated from being in contact with a large-end flange 11 of a squirrel cage tool until the pressing block 10 passes through a hoisting control area of the front cone 6 of the mixing drum on the pressing device 4; the control switch corresponding to the left power obtaining end 21 is operated again to be closed, so that the left power obtaining end 21 of the electro-hydraulic reversing valve is not powered, namely the electro-hydraulic reversing valve is positioned at the middle position again, and high-pressure oil does not enter a rod cavity of the oil cylinder 7 any more at the moment, so that the retraction action of a piston rod of the oil cylinder 7 is stopped; thereby completing the correction operation of the front cone 6 of the mixing drum; meanwhile, the mixing drum 6 and the squirrel cage tool 5 are hoisted to leave the device, and the front cone or the rear cone of the next mixing drum is waited to enter the device for correction operation.
Claims (10)
1. A mixing drum forming correction device is characterized in that: the device comprises a pressing platform (9), wherein n pressing devices (4) used for being matched with a squirrel cage tool (5) to downwards press a front cone (6) of a mixing drum are uniformly distributed on the pressing platform (9) along the same circle circumferential direction, n is an even number, and the distance from the top end of each pressing device (4) to the circle center is smaller than the semi-diameter of the lower bottom circle of the front cone (6) of the mixing drum;
each pressing device (4) comprises a supporting seat (32) and a link mechanism (8), the link mechanism (8) comprises an oil cylinder (7) and a connecting rod (31) hinged to the top end of a piston rod of the oil cylinder (7) through a piston rod hinge shaft (28), a cylinder seat of the oil cylinder (7) is hinged to an oil cylinder fixing seat (26) through an oil cylinder hinge shaft (27), a through hole is formed in the connecting rod (31), and the through hole is hinged to a fixing seat (30) vertically arranged at the upper end of the supporting seat (32) through a connecting rod middle hinge shaft (29);
the hydraulic system (1) is used for driving each link mechanism (8), the hydraulic system (1) comprises an oil tank (12), an oil pump (16) installed at an oil outlet end of the oil tank (12), a motor (36) and a valve group (2) used for controlling the direction of hydraulic oil, an outlet end of the oil pump (16) is connected with two oil inlet and return ports of an oil cylinder (7) of each link mechanism (8) through an oil pipe, the valve group (2) comprises a one-way valve (17) installed on the oil pipe at the outlet end of the oil pump (16), an electro-hydraulic reversing valve (19) arranged at the oil inlet and return ports of each oil cylinder (7) and an electromagnetic overflow valve (18), a return pipeline is led out from the oil pipe at the rear end of the one-way valve (17), the electromagnetic overflow valve (18) is installed on the return pipeline, and an electric end (23) of the; the right electricity obtaining end (20) and the left electricity obtaining end (21) of each electro-hydraulic reversing valve (19) are respectively connected with a voltage source through a control switch (3).
2. The mixing drum forming correction device according to claim 1, wherein: each pressing device (4) is provided with a fan-shaped falling area (33).
3. The mixing drum forming correction device according to claim 1, wherein: four pressing devices (4) are uniformly distributed on the pressing platform (9) along the same circle in the circumferential direction.
4. A mixing drum forming correction device according to claim 3, characterized in that: the pressing platform (9) is of a cross structure formed by welding a long beam and two short beams, the long beam and the two short beams are rectangular square tubes or H-shaped steel, and the upper surfaces of the cross structures are flush; the supporting seats (32) of the four pressing devices (4) are fixedly arranged on the upper plane of the pressing platform (9).
5. The mixing drum forming correction device according to claim 1, wherein: a pressing block (10) is fixed on the lower end face of the top end of each connecting rod (31); the contact surface of the lower end of the pressing block (10) and the upper surface of the big end flange (11) of the squirrel cage tool is provided with a buffering wear-resistant layer.
6. The mixing drum forming correction device according to claim 5, wherein: the pressing block (10) is of a regular prism structure, and the area of the lower surface of the pressing block (10) is not less than 40 cm.
7. The mixing drum forming correction device according to claim 5, wherein: the buffering wear-resistant layer is made of rubber.
8. The mixing drum forming correction device according to claim 1, wherein: an oil suction filter (15) is arranged at the oil inlet end of the oil pump (16), the oil suction filter (15) is arranged in the oil tank (12), a liquid level meter, a thermometer (13) and an air filter (14) are further arranged on the oil tank (12), and a pressure gauge (22) is respectively arranged on two oil inlet oil pipes of the oil cylinder (7).
9. The mixing drum forming correction device according to claim 1, wherein: an oil tank (12), an oil pump (16) and a motor (36) in the hydraulic system (1) are arranged close to the center of the pressing platform (9); each control switch (3) is correspondingly arranged at the control switch arrangement end (24) of the support seat (32).
10. The mixing drum forming correction device according to claim 1, wherein: the squirrel-cage tool (5) is formed by welding a plurality of mutually parallel triangular angle steels or channel steels, positioning rings, rib plates, a large end flange (11) and a small end flange, and the inside of the squirrel-cage tool (5) is provided with a cavity, and the taper of the cavity is the same as that of a front cone (6) of the mixing drum; the inner diameter of a large-end flange (11) of the squirrel cage tool is 4mm smaller than the maximum diameter of a front cone (6) of the mixing drum; the height of the cavity of the squirrel cage tool (5) is 10mm higher than that of the front cone (6) of the mixing drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911022439.3A CN111299444A (en) | 2019-10-25 | 2019-10-25 | Mixing drum forming correction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911022439.3A CN111299444A (en) | 2019-10-25 | 2019-10-25 | Mixing drum forming correction device |
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| Publication Number | Publication Date |
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| CN111299444A true CN111299444A (en) | 2020-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911022439.3A Pending CN111299444A (en) | 2019-10-25 | 2019-10-25 | Mixing drum forming correction device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112247474A (en) * | 2020-09-29 | 2021-01-22 | 中国航发动力股份有限公司 | Thin-wall annular assembly sizing device |
-
2019
- 2019-10-25 CN CN201911022439.3A patent/CN111299444A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112247474A (en) * | 2020-09-29 | 2021-01-22 | 中国航发动力股份有限公司 | Thin-wall annular assembly sizing device |
| CN112247474B (en) * | 2020-09-29 | 2021-09-17 | 中国航发动力股份有限公司 | Thin-wall annular assembly sizing device |
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