CN113369043B - Hydraulic chuck device for spraying polyurethane thermal insulation pipe - Google Patents
Hydraulic chuck device for spraying polyurethane thermal insulation pipe Download PDFInfo
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- CN113369043B CN113369043B CN202110570460.8A CN202110570460A CN113369043B CN 113369043 B CN113369043 B CN 113369043B CN 202110570460 A CN202110570460 A CN 202110570460A CN 113369043 B CN113369043 B CN 113369043B
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- oil cylinder
- strain gauge
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/0207—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the work being an elongated body, e.g. wire or pipe
- B05B13/0214—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the work being an elongated body, e.g. wire or pipe the liquid or other fluent material being applied to the whole periphery of the cross section of the elongated body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
Abstract
The invention relates to a hydraulic chuck device for spraying a polyurethane thermal insulation pipe, which comprises: the device comprises a first oil cylinder, a second oil cylinder, a piston, a horizontal pulling block, a vertical pulling block, an external supporting jaw, a strain gauge, an internal clamping jaw, a sealing stop block, a first disc body, a second disc body, a third disc body, a fourth disc body, a first oil valve, a second oil valve and a central control module. The theoretical oil inlet amount of the first oil cylinder is calculated through the central control module, and the oil filling speed is determined by the theoretical oil inlet amount of the first oil cylinder; when the central control module starts the first oil valve to fill oil to the first oil cylinder, the strain gauge detects the pressure borne by the strain gauge in real time, the flow detector records the oil filling amount of the first oil cylinder in real time, and the central control module adjusts the oil filling speed of the first oil cylinder according to the pressure borne by the strain gauge and the oil filling amount of the first oil cylinder. According to the invention, the oil filling speed of the oil cylinder is intelligently adjusted, so that the damage of a pipeline to be sprayed due to the overlarge supporting force of the external support clamping jaw caused by the overlarge oil filling speed is prevented.
Description
Technical Field
The invention relates to the technical field of workpiece fixing, in particular to a hydraulic chuck device for spraying a polyurethane thermal insulation pipe.
Background
The chuck is a device for clamping a workpiece during machine tool machining, the chuck of the existing disc part machining machine tool adopts a three-jaw or four-jaw mechanism, the jaws are of a cuboid structure, the hydraulic chuck adopts a hydraulic device to drive the jaws to do clamping work in a centripetal motion mode, when the tubular workpiece to be sprayed is fixed, the jaws support the inner circle surface of the workpiece, and one end face of the workpiece is tightly leaned on a chassis.
Disclosure of Invention
Therefore, the invention provides a hydraulic chuck device for spraying a polyurethane thermal insulation pipe, which is used for solving the problems that in the prior art, the outer supporting force is not easy to control when a workpiece is externally supported due to abrasion caused by long-term use of the surface of a chuck, and the inner circle surface of the workpiece is damaged.
In order to achieve the above object, the present invention provides a hydraulic chuck device for spraying a polyurethane thermal insulation pipe, comprising: a first oil cylinder, a second oil cylinder, a piston, a horizontal pull block, a vertical pull block, an external support jaw, a strain gauge, a seal stop block, a first disc body, a second disc body, a third disc body, a fourth disc body, a first oil valve, a second oil valve and a central control module,
the piston is arranged between the first oil cylinder and the second oil cylinder and can move according to the change of the oil quantity in the first oil cylinder and the second oil cylinder;
the horizontal pulling block is connected with the piston, the piston can drive the horizontal pulling block to synchronously move when moving, the tail end of the horizontal pulling block is provided with an inclined plane, and a sliding block is arranged on the inclined plane;
the vertical pulling block is provided with an inclined plane with the same slope as that of the inclined plane of the horizontal pulling block, the inclined plane of the vertical pulling block is in contact with the inclined plane of the horizontal pulling block, a sliding groove is formed in the inclined plane, and the sliding block is placed in the sliding groove;
the inner clamping jaw is arranged on the vertical pulling block and is positioned at one side close to the center of the chuck;
the outer supporting clamping jaw is arranged on the vertical pulling block and is positioned on one side far away from the center of the chuck;
the strain gauge is arranged on the vertical pull block and positioned between the inner clamping jaw and the outer supporting jaw, and the stress borne by the strain gauge in an initial state is zero;
the sealing stop block is arranged on one side of the second oil cylinder and used for preventing oil in the second oil cylinder from leaking;
the first oil valve is connected with the first oil cylinder, the opening degree of the first oil valve can be adjusted, the opening degree is adjusted to adjust the oil filling speed of the first oil cylinder, the first oil valve is provided with a flow detector, and the flow detector can record the oil filling amount of the first oil valve;
the second oil valve is connected with the second oil cylinder;
the central control module is connected with the first oil valve, the second oil valve and the strain gauge respectively;
the inner clamping jaw and the outer supporting jaw can be adjusted in position according to a pipeline to be clamped;
before clamping a pipeline to be sprayed by adopting the chuck device, detecting the inner diameter of the pipeline to be sprayed and the outer diameter of an outer support jaw when the second oil cylinder is filled with liquid, comparing the inner diameter of the pipeline to be sprayed and the outer diameter of the outer support jaw, judging whether the position of the outer support jaw can meet the support requirement of the pipeline to be sprayed, adjusting the position of the outer support jaw when the support requirement is not met, sleeving the pipeline to be sprayed on the outer support jaw when the requirement is met, calculating the theoretical oil inlet amount of a first oil cylinder by a central control module according to the inner diameter of the pipeline to be sprayed and the outer diameter of the outer support jaw when the second oil cylinder is filled with liquid, starting a first oil valve by the central control module to refuel the first oil cylinder, wherein the refueling speed is determined by the theoretical oil inlet amount of the first oil cylinder;
when the central control module starts the first oil valve to fill oil to the first oil cylinder, the strain gauge detects the pressure borne by the strain gauge in real time, the flow detector records the oil filling amount of the first oil cylinder in real time, and the central control module adjusts the oil filling speed of the first oil cylinder according to the pressure borne by the strain gauge and the oil filling amount of the first oil cylinder.
Further, before the chuck device is used for clamping a pipeline to be sprayed, the inner diameter R1 of the pipeline to be sprayed is detected and a detection result is transmitted to the central control module, the outer diameter R2 of the outer support jaw when the second oil cylinder is full of liquid is detected and the detection result is transmitted to the central control module, the central control module calculates the difference value delta R between the inner diameter R1 of the pipeline to be sprayed and the outer diameter R2 of the outer support jaw, the delta R is R1-R2, a diameter difference value delta Rz is arranged in the standard value of the central control module, and the central control module compares the difference value delta R with the diameter difference standard value delta Rz:
when the delta R is less than or equal to the delta Rz, the central control module judges that the position of the external support clamping jaw meets the support requirement of the pipeline to be sprayed;
and when the delta R is larger than the delta Rz, the central control module judges that the position of the external support clamping jaw does not meet the support requirement of the pipeline to be sprayed, and integrally adjusts the positions of the internal clamping jaw, the external support clamping jaw and the strain gauge.
Further, when the central control module judges that the position of the outer supporting jaw does not meet the supporting requirement of the pipeline to be sprayed, the central control module calculates the moving distance L of the integral inner clamping jaw, the outer supporting jaw and the strain gauge away from the center of the chuck, wherein the L is equal to delta R-delta Rz + lb, lb is a moving distance compensation parameter, and the central control module recalculates the difference delta R after the movement is finished.
Further, when the central control module judges that the position of the external support clamping jaw meets the support requirement of the pipeline to be sprayed, the central control module calculates theoretical oil inlet quantity A of the first oil cylinder according to the difference value delta R, wherein A is delta R multiplied by a, and a is a theoretical oil inlet quantity compensation parameter of the difference value delta R to the first oil cylinder.
Further, when the hydraulic chuck is adopted to support and fix a pipeline to be sprayed, the pipeline to be sprayed is sleeved on the outer support jaw, the central control module starts the first oil valve to oil the first oil cylinder, the strain gauge detects the self pressure F in real time in the oil filling process and transmits the detection result to the central control module;
when the central control module starts the first oil valve to fill oil to the first oil cylinder, the initial oil filling speed is B, the flow detector records the oil filling amount D of the first oil cylinder in real time and transmits the recorded data to the central control module in real time;
and the central control module analyzes the strain gauge pressure F and the oil injection quantity D of the first oil cylinder in real time, and adjusts the opening of the first oil valve according to the analysis result so as to adjust the oil injection speed of the first oil valve.
Further, when the strain gauge pressure F is not 0 or the oil injection amount D of the first oil cylinder is larger than or equal to k1A, the central control module adjusts the oil injection speed to be B1, wherein k1 is a first coefficient of the oil injection amount of the first oil cylinder.
Further, when the oiling speed is adjusted because the strain gauge pressure F is not 0, the central control module calculates the oiling quantity ratio P of the oiling quantity D of the first oil cylinder to the theoretical oiling quantity A of the first oil cylinder, wherein P is D/A;
the central control module calculates an oil injection speed B1 according to the oil injection quantity ratio P, wherein B1 is Pxp 1 XB, and P1 is a first adjusting parameter of the oil injection quantity ratio to the oil injection speed.
Further, when the oil injection speed is adjusted because the oil injection amount D of the first oil cylinder is larger than or equal to k1A, the central control module calculates the oil injection speed B1, B1 is q1 multiplied by B, wherein q1 is an oil injection amount-to-oil injection speed adjusting parameter;
when the oiling speed is adjusted to be B1 as the oiling amount D of the first oil cylinder is larger than or equal to k1A, the strain gauge detects the self pressure F in real time and transmits the detection result to the central control module until the strain gauge pressure F is not 0.
When the oil injection speed is adjusted to be B1 and the pressure F of the strain gauge is not 0 because the oil injection amount D of the first oil cylinder is not less than k1A, the central control module calculates the difference R between the oil injection amount D of the first oil cylinder and the oil injection amount of k1A, R is D-k1A, the central control module adjusts the oil injection speed according to the difference R between the oil injection amounts, the adjusted speed is B2, B2 is R x R x B35 1, and R is an oil injection speed adjusting parameter of the difference between the oil injection amounts D and k 1A.
Further, when the oiling speed is adjusted because the pressure F of the strain gauge is not 0, the strain gauge detects the pressure Fz on the strain gauge in real time and transmits the detection result to the central control module in real time, the central control module is provided with a complete supporting pressure parameter Fb, the central control module compares the pressure Fz of the strain gauge with the complete supporting pressure parameter Fb,
when Fz is larger than or equal to Fb, the central control module judges that the supporting force of the external support clamping jaw on the pipeline to be sprayed reaches the standard, and the central control module controls the first oil valve to stop injecting oil into the first oil cylinder continuously;
when Fz is less than Fb, the central control module judges that the supporting force of the external support clamping jaw on the pipeline to be sprayed does not reach the standard, and the central control module controls the first oil valve to continuously inject oil into the first oil cylinder.
Further, a theoretical oil inlet first parameter A1 of the first oil cylinder and a theoretical oil inlet second parameter A2 of the first oil cylinder are arranged in the central control module, wherein A1 is less than A2, and the central control module compares the theoretical oil inlet quantity A of the first oil cylinder with the theoretical oil inlet first parameter A1 of the first oil cylinder and the theoretical oil inlet second parameter A2 of the first oil cylinder:
when A is not more than A1, the central control module sets B1 as an initial oiling speed B;
when A is more than A1 and less than or equal to A2, the center control module sets B2 as an initial oiling speed B;
when A is larger than A2, the central control module sets B3 as an initial oiling speed B;
wherein b1 is a first preset initial oil injection speed, b2 is a second preset initial oil injection speed, b3 is a third preset initial oil injection speed, and b1 is more than b2 and more than b 3.
Compared with the prior art, the central control module has the advantages that the theoretical oil inlet amount of the first oil cylinder is calculated according to the inner diameter of a pipeline to be sprayed and the outer diameter of the outer support jaw when the second oil cylinder is filled with liquid, the central control module starts the first oil valve to fill oil into the first oil cylinder, and the oil filling speed is determined by the theoretical oil inlet amount of the first oil cylinder; when the central control module starts the first oil valve to fill oil to the first oil cylinder, the strain gauge detects the pressure borne by the strain gauge in real time, the flow detector records the oil filling amount of the first oil cylinder in real time, and the central control module adjusts the oil filling speed of the first oil cylinder according to the pressure borne by the strain gauge and the oil filling amount of the first oil cylinder. According to the invention, the oil filling speed of the oil cylinder is intelligently adjusted, so that the damage of a pipeline to be sprayed due to the overlarge supporting force of the external support clamping jaw caused by the overlarge oil filling speed is prevented.
Further, when adopting chuck device treats before the spraying pipeline clamp is got, detect treat spraying pipeline internal diameter with prop the jack catch external diameter outward and contrast the two when being full of liquid in the second hydro-cylinder, judge whether prop the jack catch position outward and can satisfy and treat spraying pipeline support requirement, when unsatisfying the support requirement, adjust prop the jack catch position outward, can support through judging the jack catch position outward and treat spraying pipeline, adjust the jack catch position outward, guarantee hydraulic chuck during operation can treat spraying pipeline and carry out effectual support, detect before supporting, prevent the later stage because of the holding power is not enough to adjust, save the spraying time.
Particularly, when the central control module judges that the position of the external support jaw does not meet the support requirement of the pipeline to be sprayed, the position of the external support jaw is adjusted, and meanwhile, a moving distance compensation parameter is set during adjustment, so that the moving distance of the external support jaw fully meets the support requirement.
Further, when the central control module judges that the position of the external support jaw meets the support requirement of the pipeline to be sprayed, the central control module calculates the theoretical oil inlet amount A of the first oil cylinder according to the difference value delta R, determines the theoretical oil inlet amount of the first oil cylinder according to the inner diameter of the pipeline to be sprayed and the outer diameter of the external support jaw, calculates the theoretical oil filling amount of the first oil cylinder before the pipeline to be sprayed is supported, determines the range of the gross oil filling amount in advance, is convenient for adjusting the oil filling amount and shortens the time for reaching the support requirement.
Furthermore, the central control module adjusts the opening of the first oil valve according to the pressure of the strain gauge and the oil injection amount of the first oil cylinder, so that the theoretical oil injection amount A is not reasonable, the oil injection speed of the first oil cylinder is too high, the external support clamping jaw supporting force is too large, the pipeline to be sprayed is damaged, the pipeline to be sprayed is protected, and the safety factor when the pipeline is fixed is enhanced.
Particularly, when the pressure F of the strain gauge is not 0 or the oil injection amount D of the first oil cylinder is not less than k1A, the central control module adjusts the oil injection speed to be B1, when the pressure F of the strain gauge is not 0, the fact that the outer support jaw starts to contact with a pipeline to be sprayed and the outer support jaw starts to bear force is indicated, at the moment, if the oil injection amount D of the first oil cylinder still does not reach k1A, the theoretical oil injection amount A of the first oil cylinder is considered to be unreasonable to set, the oil injection speed is reduced, the oil injection speed is prevented from being too high, and the pipeline to be sprayed is damaged due to the fact that the supporting force of the outer support jaw is too large; when the oil injection amount D of the first oil cylinder is larger than or equal to k1A, the theoretical oil injection amount A of the first oil cylinder to be reached is considered, the oil injection speed is reduced, and the damage to the pipeline to be sprayed due to the fact that the oil injection speed is too high and the supporting force of the external support claw is too large is prevented.
Particularly, when the oiling speed is adjusted because the pressure F of the strain gauge is not 0, the central control module calculates the oiling quantity ratio P of the oiling quantity D of the first oil cylinder and the theoretical oil inlet quantity A of the first oil cylinder, when the oiling quantity ratio P is smaller, the actually required oiling quantity is smaller, the difference value between the actually required oiling quantity and the theoretical oil inlet quantity A is larger, the larger the difference value is, the smaller the adjusted oiling speed is, the oiling speed is adjusted according to the oiling quantity ratio, and the phenomenon that the oiling speed is too high and the outer support claw support force is too large to cause damage to a pipeline to be sprayed is further prevented.
Particularly, when the oil injection speed is adjusted because the oil injection quantity D of the first oil cylinder is larger than or equal to k1A, the central control module calculates the oil injection speed B1, when the difference R is larger, the larger the actually required oil injection quantity is, the larger the difference between the actually required oil injection quantity and the theoretical oil injection quantity A is, the oil injection speed is adjusted according to the difference R, the higher the oil injection speed is on the premise of ensuring safety, the less time is required for supporting a pipeline to be sprayed, the time for achieving the supporting requirement is shortened, and the process progress is accelerated.
Further, when the oiling speed is adjusted because the strain gauge pressure F is not 0, the strain gauge detects the pressure Fz received by the strain gauge in real time and transmits the detection result to the central control module in real time, the central control module is provided with a complete support pressure parameter Fb, the central control module compares the strain gauge pressure Fz with the complete support pressure parameter Fb, and the situation that the oiling speed is too high and the outer support jaw supporting force is too large to cause damage to a pipeline to be sprayed is prevented by setting the complete support pressure parameter Fb.
Furthermore, a theoretical oil inlet first parameter A1 of the first oil cylinder and a theoretical oil inlet second parameter A2 of the first oil cylinder are arranged in the central control module, wherein A1 is less than A2, the central control module compares the theoretical oil inlet quantity A of the first oil cylinder with the theoretical oil inlet first parameter A1 of the first oil cylinder and the theoretical oil inlet second parameter A2 of the first oil cylinder to determine an initial oil injection speed, the initial oil injection speed is determined according to the theoretical oil inlet quantity A of the first oil cylinder, and the phenomenon that a pipeline to be sprayed is damaged due to the fact that the supporting force of the outer supporting claw is too large is further prevented.
Drawings
FIG. 1 is a schematic structural diagram of a hydraulic chuck device for spraying a polyurethane thermal insulation pipe.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described below with reference to examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Fig. 1 is a schematic structural view of a hydraulic chuck device for spraying a polyurethane thermal insulation pipe according to the present invention. The invention discloses a hydraulic chuck device for spraying a polyurethane thermal insulation pipe, which comprises: a first oil cylinder 1, a second oil cylinder 2, a piston 3, a horizontal pulling block 4, a vertical pulling block 5, an external supporting jaw 6, a strain gauge 7, an internal clamping jaw 8, a blocking block 9, a first disk body 12, a second disk body 13, a third disk body 14, a fourth disk body 15, a first oil valve 10, a second oil valve 11 and a central control module (not shown in the figure), wherein,
the piston 3 is arranged between the first oil cylinder 1 and the second oil cylinder 2, and the piston 3 can move according to the change of the oil quantity in the first oil cylinder 1 and the second oil cylinder 2;
the horizontal pulling block 4 is connected with the piston 3, the piston 3 can drive the horizontal pulling block 4 to move synchronously when moving, the tail end of the horizontal pulling block 4 is provided with an inclined plane, and a sliding block 401 is arranged on the inclined plane;
the vertical pulling block 5 is provided with an inclined surface with the same slope as that of the inclined surface of the horizontal pulling block 4, the inclined surface of the vertical pulling block 5 is in contact with the inclined surface of the horizontal pulling block 4, a sliding groove 501 is formed in the inclined surface, and the sliding block 401 is placed in the sliding groove 501;
the inner clamping jaw 8 is arranged on the vertical pulling block 5 and is positioned at one side close to the center of the chuck;
the outer supporting jaw 6 is arranged on the vertical pulling block 5 and is positioned on one side far away from the center of the chuck;
the strain gauge 7 is arranged on the vertical pull block 5 and is positioned between the inner clamping jaw 8 and the outer supporting jaw 6, and the stress borne by the strain gauge 7 in an initial state is zero;
the sealing block 9 is arranged on one side of the second oil cylinder 2 and used for preventing oil in the second oil cylinder 2 from leaking;
the first oil valve 10 is connected with the first oil cylinder 1, the opening degree of the first oil valve 10 can be adjusted, the opening degree is adjusted to adjust the oil filling speed of the first oil cylinder 1, the first oil valve 10 is provided with a flow detector 1001, and the flow detector 1001 can record the oil filling amount of the first oil valve 10;
the second oil valve 11 is connected with the second oil cylinder 2;
the central control module is respectively connected with the first oil valve 10, the second oil valve 11 and the strain gauge 7;
the inner clamping jaw 8 and the outer supporting jaw 6 can be adjusted in position according to a pipeline to be clamped;
before the chuck device is used for clamping a pipeline to be sprayed, the inner diameter R1 of the pipeline to be sprayed is detected and a detection result is transmitted to the central control module, the outer diameter R2 of the outer support jaw 6 is detected when the second oil cylinder 2 is filled with liquid, the detection result is transmitted to the central control module, the central control module calculates the difference value delta R between the inner diameter R1 of the pipeline to be sprayed and the outer diameter R2 of the outer support jaw 6, the delta R is R1-R2, a diameter difference value delta Rz is arranged in the standard value of the central control module, and the central control module compares the difference value delta R with the diameter difference standard value delta Rz:
when the delta R is less than or equal to the delta Rz, the central control module judges that the position of the external support clamping jaw 6 meets the support requirement of the pipeline to be sprayed;
when delta R is larger than delta Rz, the central control module judges that the position of the outer supporting clamping jaw 6 does not meet the supporting requirement of the pipeline to be sprayed, and integrally adjusts the positions of the inner clamping jaw 8, the outer supporting clamping jaw 6 and the strain gauge 7.
In this example Δ Rz is 40 mm.
Whether can support through judging outer 6 positions of jack catch and treat the spraying pipeline, adjust outer 6 positions of jack catch that prop, guarantee hydraulic chuck during operation can treat the spraying pipeline and carry out effectual support, detect before supporting, prevent that the later stage from adjusting because of the holding power is not enough, save the spraying time.
And when the central control module judges that the position of the outer support jaw 6 does not meet the support requirement of the pipeline to be sprayed, the central control module calculates the moving distance L of the integral inner clamping jaw 8, the outer support jaw 6 and the strain gauge 7 away from the center of the chuck, wherein the L is delta R-delta Rz + lb, lb is a moving distance compensation parameter, and the central control module recalculates the difference delta R after the movement is finished.
In this example, lb is 10 mm.
When the central control module judges that the position of the external support clamping jaw 6 does not meet the support requirement of the pipeline to be sprayed, the position of the external support clamping jaw 6 is adjusted, and meanwhile, a moving distance compensation parameter is set during adjustment, so that the moving distance of the external support clamping jaw 6 fully meets the support requirement.
And when the central control module judges that the position of the external support claw 6 meets the support requirement of the pipeline to be sprayed, the central control module calculates the theoretical oil inlet amount A of the first oil cylinder 1 according to the difference value delta R, wherein A is delta R multiplied by a, and a is a theoretical oil inlet amount compensation parameter of the difference value delta R to the first oil cylinder 1.
The theoretical oil inlet amount of the first oil cylinder 1 is determined according to the inner diameter of the pipeline to be sprayed and the outer diameter of the external support jaw 6, the theoretical oil adding amount of the first oil cylinder 1 is calculated before the pipeline to be sprayed is supported, the range of the gross oil adding amount is determined in advance, the oil adding amount is convenient to adjust, and the time for reaching the support requirement is shortened.
When the hydraulic chuck is adopted to support and fix a pipeline to be sprayed, the pipeline to be sprayed is sleeved on the outer support clamping jaw 6, the central control module starts the first oil valve 10 to oil the first oil cylinder 1, the strain gauge 7 detects the self pressure F in real time in the oil filling process and transmits the detection result to the central control module;
when the central control module starts the first oil valve 10 to fill the first oil cylinder 1, the initial oil filling speed is B, the flow detector 1001 records the oil filling amount D of the first oil cylinder 1 in real time and transmits the recorded data to the central control module in real time;
the central control module analyzes the pressure F of the strain gauge 7 and the oil injection quantity D of the first oil cylinder 1 in real time, and adjusts the opening of the first oil valve 10 according to the analysis result so as to adjust the oil injection speed of the first oil valve 10.
The aperture of the first oil valve 10 is adjusted according to the pressure of the strain gauge 7 and the oil injection amount of the first oil cylinder 1, the theoretical oil injection amount A is prevented from being unreasonable, the oil injection speed of the first oil cylinder 1 is too high, the supporting force of the outer supporting clamping jaw 6 is caused to be too large, the pipeline to be sprayed is damaged, the pipeline to be sprayed is protected, and the safety factor when the pipeline is fixed is enhanced.
When the pressure F of the strain gauge 7 is not 0 or the oil injection amount D of the first oil cylinder 1 is larger than or equal to k1A, the central control module adjusts the oil injection speed to be B1, wherein k1 is the first coefficient of the oil injection amount of the first oil cylinder 1.
In the present embodiment, k1 is 0.8.
When the pressure F of the strain gage 7 is not 0, the outer supporting jaw 6 begins to contact with a pipeline to be sprayed and the outer supporting jaw 6 begins to bear force, at the moment, if the oil injection amount D of the first oil cylinder 1 does not reach k1A, the theoretical oil inlet amount A of the first oil cylinder 1 is considered to be unreasonable, the oil injection speed is reduced, and the phenomenon that the pipeline to be sprayed is damaged due to overhigh oil injection speed and overlarge supporting force of the outer supporting jaw 6 is avoided; when the oil injection amount D of the first oil cylinder 1 is larger than or equal to k1A, the theoretical oil injection amount A about to reach the first oil cylinder 1 is considered, the oil injection speed is reduced, and the damage to the pipeline to be sprayed due to the fact that the oil injection speed is too high and the supporting force of the outer supporting claw 6 is too large is prevented.
When the oiling speed is adjusted because the pressure F of the strain gauge 7 is not 0, the central control module calculates the oiling quantity ratio P of the oiling quantity D of the first oil cylinder 1 to the theoretical oiling quantity A of the first oil cylinder 1, wherein P is D/A;
the central control module calculates an oil injection speed B1 according to the oil injection quantity ratio P, wherein B1 is Pxp 1 XB, and P1 is a first adjusting parameter of the oil injection quantity ratio to the oil injection speed.
When the oiling amount ratio P is smaller, the smaller the oiling amount which is actually required is, the larger the difference value between the actually required oiling amount and the theoretical oiling amount A is, the smaller the difference value is, the oiling speed is adjusted according to the oiling amount ratio, the condition that the oiling speed is too high is further prevented, and the damage to the pipeline to be sprayed due to the too large supporting force of the external supporting clamping jaw 6 is further prevented.
When the oil injection speed is adjusted because the oil injection quantity D of the first oil cylinder 1 is larger than or equal to k1A, the central control module calculates the oil injection speed B1, B1 is q1 multiplied by B, wherein q1 is an oil injection quantity-to-oil injection speed adjusting parameter;
in the present embodiment, q1 is 0.7.
When the oiling speed is adjusted to be B1 as the oiling amount D of the first oil cylinder 1 is larger than or equal to k1A, the strain gauge 7 detects the self pressure F in real time and transmits the detection result to the central control module until the pressure F of the strain gauge 7 is not 0.
When the oil filling speed is adjusted to be B1 and the pressure F of the strain gauge 7 is not 0 because the oil filling quantity D of the first oil cylinder 1 is not less than k1A, the central control module calculates the difference R between the oil filling quantity D of the first oil cylinder 1 and the oil filling quantity of k1A, wherein R is D-k1A, the central control module adjusts the oil filling speed according to the difference R between the oil filling quantities, the adjusted speed is B2, B2 is R x R x B1, and R is the oil filling quantity difference between the oil filling quantity D and the oil filling quantity of k1A to adjust the oil filling speed.
When the difference value R is larger, the fact that the actually required oil injection amount is larger, the difference value between the actually required oil injection amount and the theoretical oil inlet amount A is larger, the oil injection speed is adjusted according to the difference value R, the oil injection speed is higher on the premise of ensuring safety, the time required for supporting the pipeline to be sprayed is shorter, the time for reaching the supporting requirement is shortened, and the process progress is accelerated.
When the oiling speed is adjusted because the pressure F of the strain gauge 7 is not 0, the strain gauge 7 detects the pressure Fz borne by the strain gauge 7 in real time and transmits the detection result to the central control module in real time, the central control module is provided with a complete supporting pressure parameter Fb, the central control module compares the pressure Fz of the strain gauge 7 with the complete supporting pressure parameter Fb,
when Fz is greater than or equal to Fb, the central control module judges that the supporting force of the outer supporting claw 6 on the pipeline to be sprayed reaches the standard, and the central control module controls the first oil valve 10 to stop injecting oil into the first oil cylinder 1;
when Fz is less than Fb, the central control module judges that the supporting force of the external support claw 6 on the pipeline to be sprayed does not reach the standard, and the central control module controls the first oil valve 10 to continuously inject oil into the first oil cylinder 1.
Through setting up complete supporting pressure parameter Fb, prevent that oiling speed is too much, prop 6 the power of propping excessively and lead to treating that the spraying pipeline is impaired outward.
The control module is internally provided with a theoretical oil inlet first parameter A1 of the first oil cylinder 1 and a theoretical oil inlet second parameter A2 of the first oil cylinder 1, wherein A1 is less than A2, and the control module compares the theoretical oil inlet quantity A of the first oil cylinder 1 with the theoretical oil inlet first parameter A1 of the first oil cylinder 1 and the theoretical oil inlet second parameter A2 of the first oil cylinder 1:
when A is not more than A1, the central control module sets B1 as an initial oiling speed B;
when A is more than A1 and less than or equal to A2, the center control module sets B2 as an initial oiling speed B;
when A is larger than A2, the central control module sets B3 as an initial oiling speed B;
wherein b1 is a first preset initial oil injection speed, b2 is a second preset initial oil injection speed, b3 is a third preset initial oil injection speed, and b1 is more than b2 and more than b 3.
The initial oil injection speed is determined according to the theoretical oil inlet quantity A of the first oil cylinder 1, and further, the damage to a pipeline to be sprayed due to the fact that the oil injection speed is too high and the supporting force of the outer supporting claw 6 is too large is prevented.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (6)
1. The utility model provides a polyurethane insulating tube hydraulic chuck device for spraying which characterized in that includes:
a first oil cylinder;
a second cylinder;
the piston is arranged between the first oil cylinder and the second oil cylinder and can move according to the change of the oil quantity in the first oil cylinder and the second oil cylinder;
the piston can drive the horizontal pulling block to synchronously move when moving, the tail end of the horizontal pulling block is provided with an inclined plane, and a sliding block is arranged on the inclined plane;
the vertical pulling block is provided with an inclined plane with the same slope as that of the inclined plane of the horizontal pulling block, the inclined plane of the vertical pulling block is in contact with the inclined plane of the horizontal pulling block, a sliding groove is formed in the inclined plane, and the sliding block is placed in the sliding groove;
the inner clamping jaw is arranged on the vertical pulling block and is positioned at one side close to the center of the chuck;
the outer supporting clamping jaw is arranged on the vertical pulling block and is positioned on one side far away from the center of the chuck;
the strain gauge is arranged on the vertical pull block and positioned between the inner clamping jaw and the outer supporting jaw, and the stress borne by the strain gauge in an initial state is zero;
the sealing stop block is arranged on one side of the second oil cylinder and used for preventing oil in the second oil cylinder from leaking;
the first oil valve is connected with the first oil cylinder, the opening degree of the first oil valve can be adjusted, the opening degree is adjusted to adjust the oil filling speed of the first oil cylinder, the first oil valve is provided with a flow detector, and the flow detector can record the oil filling amount of the first oil valve;
the second oil valve is connected with the second oil cylinder;
the central control module is connected with the first oil valve, the second oil valve and the strain gauge respectively;
the inner clamping jaw and the outer supporting jaw can be adjusted in position according to a pipeline to be clamped;
before clamping a pipeline to be sprayed by adopting the chuck device, detecting the inner diameter of the pipeline to be sprayed and the outer diameter of an outer support jaw when the second oil cylinder is filled with liquid, comparing the inner diameter of the pipeline to be sprayed and the outer diameter of the outer support jaw, judging whether the position of the outer support jaw can meet the support requirement of the pipeline to be sprayed, adjusting the position of the outer support jaw when the support requirement is not met, sleeving the pipeline to be sprayed on the outer support jaw when the requirement is met, calculating the theoretical oil inlet amount of a first oil cylinder by a central control module according to the inner diameter of the pipeline to be sprayed and the outer diameter of the outer support jaw when the second oil cylinder is filled with liquid, starting a first oil valve by the central control module to refuel the first oil cylinder, wherein the refueling speed is determined by the theoretical oil inlet amount of the first oil cylinder;
when the central control module starts the first oil valve to oil the first oil cylinder, the strain gauge detects the pressure borne by the strain gauge in real time, the flow detector records the oil filling amount of the first oil cylinder in real time, and the central control module adjusts the oil filling speed of the first oil cylinder according to the pressure borne by the strain gauge and the oil filling amount of the first oil cylinder;
before the chuck device is used for clamping a pipeline to be sprayed, detecting the inner diameter R1 of the pipeline to be sprayed and transmitting a detection result to the central control module, detecting the outer diameter R2 of the outer support jaw when the second oil cylinder is filled with liquid and transmitting the detection result to the central control module, wherein the central control module calculates the difference value delta R between the inner diameter R1 of the pipeline to be sprayed and the outer diameter R2 of the outer support jaw, the delta R = R1-R2, a diameter difference standard value delta Rz is arranged in the central control module, and the central control module compares the difference value delta R with the diameter difference standard value delta Rz;
when the delta R is less than or equal to the delta Rz, the central control module judges that the position of the external support clamping jaw meets the support requirement of the pipeline to be sprayed;
when the delta R is larger than the delta Rz, the central control module judges that the position of the external support clamping jaw does not meet the support requirement of the pipeline to be sprayed, and integrally adjusts the positions of the internal clamping jaw, the external support clamping jaw and the strain gauge;
when the central control module judges that the position of the outer support jaw does not meet the support requirement of the pipeline to be sprayed, the central control module calculates the moving distance L of the integral inner clamping jaw, the outer support jaw and the strain gauge away from the center of the chuck, wherein L = delta R-delta Rz + lb, lb is a moving distance compensation parameter, and the central control module recalculates the difference delta R after the movement is finished;
when the central control module judges that the position of the external support clamping jaw meets the support requirement of the pipeline to be sprayed, the central control module calculates theoretical oil inlet quantity A of the first oil cylinder according to the difference value delta R, wherein A = delta R multiplied by a, and a is a theoretical oil inlet quantity compensation parameter of the difference value delta R to the first oil cylinder;
when the hydraulic chuck is adopted to support and fix a pipeline to be sprayed, the pipeline to be sprayed is sleeved on the outer support clamping jaw, the central control module starts the first oil valve to oil the first oil cylinder, the strain gauge detects the self pressure F in real time in the oil filling process and transmits the detection result to the central control module;
when the central control module starts the first oil valve to fill oil to the first oil cylinder, the initial oil filling speed is B, the flow detector records the oil filling amount D of the first oil cylinder in real time and transmits the recorded data to the central control module in real time;
the central control module analyzes the strain gauge pressure F and the oil injection quantity D of the first oil cylinder in real time, and adjusts the opening of the first oil valve according to the analysis result so as to adjust the oil injection speed of the first oil valve;
the central control module calculates theoretical oil inlet quantity of the first oil cylinder according to the inner diameter of a pipeline to be sprayed and the outer diameter of the outer support clamping jaw when the second oil cylinder is filled with liquid, the central control module starts the first oil valve to oil the first oil cylinder, and the oil filling speed is determined by the theoretical oil inlet quantity of the first oil cylinder; the central control module starts the first oil valve is right when the first oil cylinder is refueled, the strain gauge detects the pressure borne by the strain gauge in real time, the flow detector records the oil filling amount of the first oil cylinder in real time, the central control module adjusts the oil filling speed of the first oil cylinder according to the pressure borne by the strain gauge and the oil filling amount of the first oil cylinder, the oil filling speed is prevented from being too high through the oil filling speed of the intelligent adjusting oil cylinder, and the outer support clamping jaw supporting force is too large to cause the damage of a pipeline to be sprayed.
2. The hydraulic chuck device for spraying the polyurethane thermal insulation pipe as claimed in claim 1, wherein the central control module adjusts the oil injection speed to be B1 when the strain gauge pressure F is not 0 or the oil injection amount D of the first oil cylinder is not less than k1A, wherein k1 is the first coefficient of oil injection of the first oil cylinder.
3. The hydraulic chuck device for spraying the polyurethane thermal insulation pipe according to claim 2, wherein when the oiling speed is adjusted because the strain gauge pressure F is not 0, the central control module calculates the oiling amount ratio P of the oiling amount D of the first cylinder to the theoretical oiling amount a of the first cylinder, P = D ÷ a;
the central control module calculates the oil injection speed B1 according to the oil injection quantity ratio P, B1= P × P1 × B, wherein P1 is a first adjusting parameter of the oil injection quantity ratio to the oil injection speed.
4. The hydraulic chuck device for spraying the polyurethane thermal insulation pipe as claimed in claim 3, wherein when the oil injection speed is adjusted because the oil injection amount D of the first oil cylinder is more than or equal to k1A, the central control module calculates the oil injection speed B1, B1= q1 xB, wherein q1 is an oil injection amount-to-oil injection speed adjusting parameter;
when the oiling speed is adjusted to be B1 as the oiling amount D of the first oil cylinder is larger than or equal to k1A, the strain gauge detects the self pressure F in real time and transmits the detection result to the central control module until the strain gauge pressure F is not 0;
when the oil injection speed is adjusted to be B1 and the pressure F of the strain gauge is not 0 because the oil injection quantity D of the first oil cylinder is not less than k1A, the central control module calculates the difference R between the oil injection quantity D of the first oil cylinder and the oil injection quantity of k1A, R = D-k1A, the central control module adjusts the oil injection speed according to the difference R between the oil injection quantities, the adjusted speed is B2, B2= R × R × B1, and R is the oil injection quantity difference between the oil injection quantity D and k1A and is an oil injection speed adjusting parameter.
5. The hydraulic chuck device for spraying the polyurethane thermal insulation pipe according to claim 4, wherein when the oil injection speed is adjusted because the strain gauge pressure F is not 0, the strain gauge detects the pressure Fz applied by the strain gauge in real time and transmits the detection result to the central control module in real time, the central control module is provided with a full support pressure parameter Fb, the central control module compares the strain gauge pressure Fz with the full support pressure parameter Fb,
when Fz is larger than or equal to Fb, the central control module judges that the supporting force of the external support clamping jaw on the pipeline to be sprayed reaches the standard, and the central control module controls the first oil valve to stop injecting oil into the first oil cylinder continuously;
when Fz is less than Fb, the central control module judges that the supporting force of the external support clamping jaw on the pipeline to be sprayed does not reach the standard, and the central control module controls the first oil valve to continuously inject oil into the first oil cylinder.
6. The hydraulic chuck device for spraying the polyurethane thermal insulation pipe as claimed in claim 5, wherein the central control module is internally provided with a theoretical oil inlet first parameter A1 of the first oil cylinder and a theoretical oil inlet second parameter A2 of the first oil cylinder, A1 is less than A2, and the central control module compares the theoretical oil inlet A of the first oil cylinder with the theoretical oil inlet first parameter A1 of the first oil cylinder and the theoretical oil inlet second parameter A2 of the first oil cylinder:
when A is not more than A1, the central control module sets B1 as an initial oiling speed B;
when A is more than A1 and less than or equal to A2, the center control module sets B2 as an initial oiling speed B;
when A is larger than A2, the central control module sets B3 as an initial oiling speed B;
wherein b1 is a first preset initial oil injection speed, b2 is a second preset initial oil injection speed, b3 is a third preset initial oil injection speed, and b1 is more than b2 and more than b 3.
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| CN202110570460.8A CN113369043B (en) | 2021-05-25 | 2021-05-25 | Hydraulic chuck device for spraying polyurethane thermal insulation pipe |
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