CN107906067B

CN107906067B - Control system for full-automatic pneumatic turntable

Info

Publication number: CN107906067B
Application number: CN201711130948.9A
Authority: CN
Inventors: 祁陵; 吴军; 章高升
Original assignee: Anhui Rui Rail Equipment Co Ltd
Current assignee: Anhui Rui Rail Equipment Co Ltd
Priority date: 2017-11-15
Filing date: 2017-11-15
Publication date: 2020-03-24
Anticipated expiration: 2037-11-15
Also published as: CN107906067A

Abstract

The invention discloses a control system for a full-automatic pneumatic turntable, and belongs to the technical field of rail turning of railway wheel sets or bogies. Including first cylinder, second cylinder, third cylinder, fourth cylinder, fifth cylinder, first switching-over valve, one-way throttle valve, first shunt, second shunt and second switching-over valve: the first cylinder, the second cylinder, the one-way throttle valve, the first flow divider, the second reversing valve and the air pump sequentially form a group of pneumatic loops; the third cylinder, the fourth cylinder, the one-way throttle valve, the first flow divider, the second reversing valve and the air pump sequentially form another group of pneumatic circuits; and the fifth cylinder, the first reversing valve and the air pump sequentially form a lifting pneumatic loop. The air valve is controlled by the collision block in the rotating process of the turntable to achieve lifting, rotating and positioning of the turntable, and automatic rotation and reversing of the wheel pair are achieved.

Description

Control system for full-automatic pneumatic turntable

Technical Field

The invention belongs to the technical field of the direction change of a railway wheel pair or a bogie, and particularly relates to a control system for a full-automatic pneumatic turntable.

Background

At present, when railway wheel set production and maintenance enterprises need to change the direction of a railway wheel set or a bogie through a production and maintenance line, the used rotary table comprises an electric rotary table and a pneumatic rotary table (also called a rotary pick). The price of the electric turntable is high, and the maintenance cost is also high; the pneumatic turntable directly jacks up the wheel pair from the middle part of the axle to perform manual or automatic reversing. The wheel set with the gear box and the brake disc and the wheel set of the passenger car urban rail and motor train section vehicles are not suitable for maintenance, the control is complex, and the maintenance is inconvenient. The full-automatic pneumatic turntable integrates the advantages of the electric turntable and the pneumatic turntable on the basis of overcoming the defects of the electric turntable and the pneumatic turntable, and has low cost and convenient maintenance. New choices are added for railway vehicle wheel set production and maintenance enterprises.

Disclosure of Invention

The invention aims to provide a control system for a full-automatic pneumatic rotary table, which realizes the automation of the rotation of the rotary table, simplifies the structure and increases the precision of the device by pressing a reversing valve control rod by two groups of collision blocks on the rotary table body in the rotation process of the rotary table.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to a control system for a full-automatic pneumatic turntable, which comprises a first cylinder, a second cylinder, a third cylinder, a fourth cylinder, a fifth cylinder, a first reversing valve, a one-way throttle valve, a first flow divider, a second flow divider and a second reversing valve: the first cylinder, the second cylinder, the one-way throttle valve, the first flow divider, the second reversing valve and the air pump sequentially form a group of pneumatic loops; the third cylinder, the fourth cylinder, the one-way throttle valve, the first flow divider, the second reversing valve and the air pump sequentially form another group of pneumatic circuits; and the fifth cylinder, the first reversing valve and the air pump sequentially form a lifting pneumatic loop.

Furthermore, the second reversing valve is a two-position four-way valve, two ports of the second reversing valve are respectively connected with ports of a first flow divider and a second flow divider through pipelines, the first flow divider and the second flow divider are respectively provided with four gas distribution ports, the gas distribution ports distributed by the first flow divider are respectively in sealed connection with a retraction gas inlet port of the first cylinder, a retraction gas inlet port of the second cylinder, a feeding gas inlet port of the third cylinder and a feeding gas inlet port of the fourth cylinder through pipelines, and the gas distribution ports of the second flow divider are respectively in sealed connection with a feeding gas inlet port of the first cylinder, a feeding gas inlet port of the second cylinder, a retraction gas inlet port of the third cylinder and a retraction gas inlet port of the fourth cylinder through pipelines; and one-way throttle valves are arranged on pipelines connected between the air inlet ports of the first cylinder, the second cylinder, the third cylinder and the fourth cylinder and the first splitter and the second splitter.

Furthermore, a first reversing valve is arranged between the air pump and the fifth air cylinder.

Furthermore, the first reversing valve is provided with a controller, and the second reversing valve is provided with a reversing valve control rod.

Further, the control system of the pneumatic turntable further comprises a first turntable collision block and a second turntable collision block: the first turntable collision block impacts a reversing valve control rod, piston rods in the first cylinder and the second cylinder retract simultaneously, and piston rods in the third cylinder and the fourth cylinder extend out simultaneously; the action loop is that the air in the air pump sequentially passes through a second reversing valve and a first shunt to a retraction air inlet port of a first air cylinder, a retraction air inlet port of a second air cylinder, a feeding air inlet port of a third air cylinder and a feeding air inlet port of a fourth air cylinder; the second turntable collision block impacts a reversing valve control rod, piston rods in the first cylinder and the second cylinder extend out simultaneously, and piston rods in the third cylinder and the fourth cylinder retract simultaneously; the action loop is that the air in the air pump sequentially passes through a second reversing valve, a first shunt to the second reversing valve, a feeding air inlet port of a first cylinder of the first shunt, a feeding air inlet port of a second cylinder, a retraction air inlet port of a third cylinder and a retraction air inlet port of a fourth cylinder.

The invention has the following beneficial effects:

the air distributor is simple in structure and convenient to control and maintain, the one-way regulating valve is arranged between the air inlet feeding end of each air cylinder and the air distributor, the controller is prevented from retracting and deflating when the second reversing valve is regulated, the two opposite air cylinders are adopted for controlling during limiting control, and the control accuracy of the device is improved.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a pneumatic control diagram of the present invention;

FIG. 2 is a schematic structural view of the steering mechanism of the present invention;

FIG. 3 is a schematic view of the installation distribution of the cylinder of the present invention;

fig. 4 is a schematic structural diagram of the turntable of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1-a first cylinder, 2-a second cylinder, 3-a third cylinder, 4-a fourth cylinder, 5-a fifth cylinder, 6-a first reversing valve, 7-a controller, 8-a one-way throttle valve, 9-a first diverter, 10-a second diverter, 11-a reversing valve control rod, 12-a second reversing valve, 13-an air pump, 14-a rotary drum, 15-a first rotary drum collision block, 16-a stepped drum, 17-a base plate, 18-a U-shaped groove, 19-a second rotary drum collision block and 20-a rotary drum body.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.

Referring to fig. 1-4, the present invention is a control system for a full-automatic pneumatic rotary table, including a first cylinder 1, a second cylinder 2, a third cylinder 3, a fourth cylinder 4, a fifth cylinder 5, a first directional valve 6, a one-way throttle valve 8, a first flow divider 9, a second flow divider 10, and a second directional valve 12:

the pneumatic control system comprises a first air cylinder 1, a second air cylinder 2, a one-way throttle valve 8, a first flow divider 9, a second flow divider 10, a second reversing valve 12 and an air pump 13 which sequentially form a group of pneumatic loops;

the third cylinder 3, the fourth cylinder 4, the one-way throttle valve 8, the first flow divider 9, the second flow divider 10, the second reversing valve 12 and the air pump 13 sequentially form another group of pneumatic loops;

the fifth cylinder 5, the first reversing valve 6 and the air pump 13 sequentially form a lifting pneumatic circuit.

The second reversing valve 12 is a two-position four-way valve, two ports of the second reversing valve 12 are respectively connected with ports of a first flow divider 9 and a second flow divider 10 through pipelines, the first flow divider 9 and the second flow divider 10 are respectively provided with four gas distribution ports, the gas distribution ports divided by the first flow divider 9 are respectively connected with a retraction gas inlet port of the first cylinder 1, a retraction gas inlet port of the second cylinder 2, a feeding gas inlet port of the third cylinder 3 and a feeding gas inlet port of the fourth cylinder 4 through pipelines in a sealing manner, and the gas distribution ports of the second flow divider 10 are respectively connected with a feeding gas inlet port of the first cylinder 1, a feeding gas inlet port of the second cylinder 2, a retraction gas inlet port of the third cylinder 3 and a retraction gas inlet port of the fourth cylinder 4 through pipelines in a sealing manner;

and one-way throttle valves 8 are respectively arranged on pipelines connected between the air inlet ports of the first cylinder 1, the second cylinder 2, the third cylinder 3 and the fourth cylinder 4 and between the first splitter 9 and the second splitter 10.

Wherein, a first reversing valve 6 is arranged between the air pump 13 and the fifth air cylinder 5.

Wherein, the first reversing valve 6 is provided with a controller 7, and the second reversing valve 12 is provided with a reversing valve control rod 11.

The first turntable collision block 15 collides with the reversing valve control rod 11, piston rods in the first cylinder 1 and the second cylinder 2 retract simultaneously, and piston rods in the third cylinder 3 and the fourth cylinder 4 extend simultaneously;

the action loop is that the gas in the air pump 13 sequentially passes through a second reversing valve 12, a first flow divider 9 to a retraction air inlet port of the first cylinder 1, a retraction air inlet port of the second cylinder 2, a feeding air inlet port of the third cylinder 3 and a feeding air inlet port of the fourth cylinder 4;

the second turntable collision block 19 collides with the reversing valve control rod 11, piston rods in the first cylinder 1 and the second cylinder 2 extend out simultaneously, and piston rods in the third cylinder 3 and the fourth cylinder 4 retract simultaneously;

the action loop is that the gas in the air pump 13 sequentially passes through a second reversing valve 12, a first flow divider 9 to the second reversing valve 12, a feeding air inlet port of a first cylinder 1 of the first flow divider, a feeding air inlet port of a second cylinder 2, a retraction air inlet port of a third cylinder 3 and a retraction air inlet port of a fourth cylinder 4.

A rotating drum 14 is matched in the ladder way 16, and a pair of U-shaped grooves 18 are symmetrically and rotatably arranged on the peripheral side of the rotating drum 14; a base plate 17 is arranged on the stepped cylinder 16, four through holes are formed in the stepped cylinder 16, two adjacent through holes are perpendicular to each other, the first cylinder 1, the second cylinder 2, the third cylinder 3 and the fourth cylinder 4 are all installed on the stepped cylinder 16 through flanges, piston rods on the first cylinder 1, the second cylinder 2, the third cylinder 3 and the fourth cylinder 4 penetrate through the U-shaped groove 18 when in a completely extended state, a second reversing valve 12 is installed on the base plate 17, a reversing valve control rod 11 is arranged on the second reversing valve 12, and the reversing valve control rod 11 controls the airflow direction of the second reversing valve 12;

one end of the rotating drum 14 is matched with a rotating disc body 20, a pair of first rotating disc collision blocks 15 and a pair of second rotating disc collision blocks 19 are arranged, the two first rotating disc collision blocks 15 are symmetrically arranged on the same surface of the rotating disc body 20, the two second rotating disc collision blocks 19 are symmetrically arranged on one surface of the rotating disc body 20, the first rotating disc collision blocks 15 or the second rotating disc collision blocks 19 press the reversing valve control rod 11 after a piston rod of the fifth air cylinder 5 is completely extended, wherein the distance between the first rotating disc collision blocks 15 and the axis of the rotating disc is greater than the distance between the second rotating disc collision blocks 19 and the axis;

firstly, the piston rod of each cylinder is matched with the groove end of a U-shaped groove 18 during debugging and is rotationally connected with the piston rod of a fifth cylinder 5 at the bottom end of the rotary drum 14;

and lifting, wherein the air pump 13 supplies air to the fifth air cylinder 5, the fifth air cylinder 5 is controlled to work through the adjustment of the first reversing valve 7, and the lifting of the rotary drum 14 is controlled:

when the fifth cylinder 5 is completely lifted, the first turntable collision block 15 or the second turntable collision block 19 drives the reversing control rod 11, the limiting loop starts to work, the first cylinder 1 and the second cylinder 2 form one group, the third cylinder 3 and the fourth cylinder 4 form the other group, and in any state, one group of cylinders is matched with the U-shaped groove 18;

if the first cylinder 1 and the second cylinder 2 are in a matched state with the U-shaped groove 18 in the initial state, the first group of rotating disc collision blocks 15 are arranged above the reversing control rod 11, the piston rods of the first cylinder 1 and the second cylinder 2 are in an extending state, the third cylinder 3 and the fourth cylinder 4 are in a contracting state, when the air pump 13 continuously delivers air, the controller 7 controls the first reversing valve 6 to enable the feeding air inlet port of the fifth cylinder 5 to be communicated with the air pump 13, so that the fifth cylinder 5 ascends, when the piston rod of the fifth cylinder 5 travels to the maximum stroke, the piston rods of the first cylinder 1 and the second cylinder 2 are positioned at the flat end of the U-shaped groove 18, the piston rod of the first cylinder 1 and the piston rod of the second cylinder 2 force the rotating cylinder 14 to rotate through the U-shaped groove in the ascending process of the stroke rotating cylinder 14, and the first cylinder 1 and the second cylinder 2 enter and exit to another groove of the U-shaped groove 18 in the descending process of the piston rod of the fifth cylinder, after the fifth cylinder 5 retracts, the first cylinder 1 and the second cylinder 2 force the rotating drum 14 to turn again in the same principle as the above principle;

the rotating cylinder 14 is reset up and down, the first cylinder 1 and the second cylinder 2 are maintained as the same, and the fifth cylinder 5 is fed and retracted again;

the rotary drum 14 continuously rotates, when the rotary drum 14 finishes 90-degree rotation, the piston rods of the fifth cylinder 5 are completely retracted, the second group of rotary table collision blocks 19 trigger the control plate 16 to enable the piston rods of the first cylinder 1 and the second cylinder 2 to retract, the piston rods of the third cylinder 3 and the fourth cylinder 4 extend to be matched with the U-shaped groove 18, and the air inlet of the air pump 13 is communicated with the first flow divider 9, so that air flows respectively enter from the retraction air inlet port of the first cylinder 1, the retraction air inlet port of the second cylinder 2, the feeding air inlet port of the third cylinder 3 and the feeding air inlet port of the fourth cylinder 4, and the rotary drum 14 rotates according to the first rotation direction through the lifting of the fifth cylinder 5;

the pneumatic control of the process is changed into hydraulic control, and the process is also tried.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A control system for a full-automatic pneumatic turntable comprises a first cylinder (1), a second cylinder (2), a third cylinder (3), a fourth cylinder (4), a fifth cylinder (5), a first reversing valve (6), a one-way throttle valve (8), a first flow divider (9), a second flow divider (10) and a second reversing valve (12), wherein the second reversing valve (12) is a two-position four-way valve, and the one-way throttle valve (8) is mounted on a pipeline connected between the air inlet ports of the first cylinder (1), the second cylinder (2), the third cylinder (3) and the fourth cylinder (4) and a pipeline connected between the first flow divider (9) and the second flow divider (10);

a first reversing valve (6) is arranged between the air pump (13) and the fifth air cylinder (5); the first reversing valve (6) is provided with a controller (7), and the second reversing valve (12) is provided with a reversing valve control rod (11);

it is characterized in that the preparation method is characterized in that,

the first cylinder (1), the second cylinder (2), the one-way throttle valve (8), the first flow divider (9), the second flow divider (10), the second reversing valve (12) and the air pump (13) sequentially form a group of pneumatic circuits;

the third cylinder (3), the fourth cylinder (4), the one-way throttle valve (8), the first flow divider (9), the second flow divider (10), the second reversing valve (12) and the air pump (13) sequentially form another group of pneumatic circuits;

the fifth cylinder (5), the first reversing valve (6) and the air pump (13) sequentially form a lifting pneumatic loop;

two ports of the second reversing valve (12) are respectively connected with ports of a first flow divider (9) and a second flow divider (10) through pipelines, the first flow divider (9) and the second flow divider (10) are respectively provided with four gas distribution ports, the gas distribution port of the first flow divider (9) is respectively connected with a retraction gas inlet port of the first cylinder (1), a retraction gas inlet port of the second cylinder (2), a feeding gas inlet port of the third cylinder (3) and a feeding gas inlet port of the fourth cylinder (4) through pipelines in a sealing manner, and the gas distribution port of the second flow divider (10) is respectively connected with a feeding gas inlet port of the first cylinder (1), a feeding gas inlet port of the second cylinder (2), a retraction gas inlet port of the third cylinder (3) and a retraction gas inlet port of the fourth cylinder (4) through pipelines in a sealing manner;

still include first carousel striking (15) and second carousel striking (19):

the first turntable collision block (15) collides with the reversing valve control rod (11), piston rods in the first cylinder (1) and the second cylinder (2) retract simultaneously, and piston rods in the third cylinder (3) and the fourth cylinder (4) extend simultaneously;

the action loop is that gas in an air pump (13) sequentially passes through a second reversing valve (12) and a first flow divider (9) to a retraction air inlet port of a first air cylinder (1), a retraction air inlet port of a second air cylinder (2), a feeding air inlet port of a third air cylinder (3) and a feeding air inlet port of a fourth air cylinder (4);

the second turntable collision block (19) collides with the reversing valve control rod (11), piston rods in the first cylinder (1) and the second cylinder (2) extend out simultaneously, and piston rods in the third cylinder (3) and the fourth cylinder (4) retract simultaneously;

the action loop is that gas in an air pump (13) sequentially passes through a second reversing valve (12), a first flow divider (9) to the second reversing valve (12), a feeding air inlet port of a first air cylinder (1) of the first flow divider, a feeding air inlet port of a second air cylinder (2), a retracting air inlet port of a third air cylinder (3) and a retracting air inlet port of a fourth air cylinder (4).