CN103671980B - A kind of valve rod upwards quick-acting mechanism - Google Patents
A kind of valve rod upwards quick-acting mechanism Download PDFInfo
- Publication number
- CN103671980B CN103671980B CN201310747653.1A CN201310747653A CN103671980B CN 103671980 B CN103671980 B CN 103671980B CN 201310747653 A CN201310747653 A CN 201310747653A CN 103671980 B CN103671980 B CN 103671980B
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- Prior art keywords
- valve rod
- spring
- sliding nut
- axis
- valve
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/02—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/48—Attaching valve members to screw-spindles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
- F16K31/508—Mechanical actuating means with screw-spindle or internally threaded actuating means the actuating element being rotatable, non-rising, and driving a non-rotatable axially-sliding element
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanically-Actuated Valves (AREA)
- Preventing Unauthorised Actuation Of Valves (AREA)
Abstract
A kind of valve rod upwards quick-acting mechanism, is characterized in that: flap is positioned on the lower end of valve rod, and the valve rod that flap is housed penetrates from the bottom of spring casing and arrives spring box body; Bottom in spring casing has circular groove, and for fixing spring use, spring is inserted in valve rod and is positioned in the circular groove of bottom in spring casing; Sliding nut is screwed into valve rod, is pressed on spring, feather key plate inserts in the longitudinal groove of nut side through the side rectangular hole of spring casing, and sliding nut can not be rotated, can only move, feather key plate is screwed on the sidewall of spring casing.The invention has the beneficial effects as follows: namely this mechanism can make valve rod fast upward motion in an automatic fashion, valve rod can be moved upward rapidly in the mode of mechanism hand behaviour again; This invention valve rod quick-acting mechanism bearing capacity is large, reliable in action; Be applicable to namely need automatically to control, have mechanism hand to grasp the instant protection valve of mechanism again, be applicable to the application places that the security requirement of centering pressure and high voltage protective valve is high; Utilize this mechanism can design corresponding quick-closing valve and quick-opening valve.
Description
technical field:
The present invention relates to mechanical equipment technical field, refer in particular to a kind of valve rod upwards quick-acting mechanism.
background technique:
At present, for known fast valve, quick-acting valve, be generally utilize the pneumatic servo cylinder of single effect to directly act on the fast opening and closing that valve rod realizes valve, or utilize beidirectional pneumatic servo cylinder indirectly-acting in valve rod, valve to be opened and closed rapidly.At present, with the valve of this kind of stem movement mechanism formation, all can realize speed pass or automatic speed automatically and open function, but not there is mechanism hand behaviour function; Once robot control system(RCS) lost efficacy, valve quick-acting function cannot realize, and the Security of application system cannot be guaranteed; Therefore, the valve formed with this kind of stem movement mechanism, the place high for security requirement is not very good; Again because the mechanical structure of this kind of stem movement mechanism limit, want by carrying out transformation way to its structure, very difficult realization can have automatic quick-action and mechanism hand behaviour quick-acting function simultaneously.
summary of the invention:
The object of this invention is to provide a kind of valve rod upwards quick-acting mechanism, overcome existing fast valve, quick-acting valve, the deficiency possessing robotic manipulation quick-acting function while possessing automatic quick-acting function cannot be realized.
The object of the invention is to realize as follows: a kind of valve rod upwards quick-acting mechanism, mainly comprise handwheel, valve rod, sliding nut, axis, handle, feather key plate, spring, spring case lid, spring casing, flap, bearing, end cap, it is characterized in that: flap is positioned on the lower end of valve rod, the valve rod that flap is housed penetrates from the bottom of spring casing and arrives spring box body; Bottom in spring casing has circular groove, and for fixing spring use, spring is inserted in valve rod and is positioned in the circular groove of bottom in spring casing; Sliding nut is screwed into valve rod, is pressed on spring, feather key plate inserts in the longitudinal groove of nut side through the side rectangular hole of spring casing, and sliding nut can not be rotated, can only move, feather key plate is screwed on the sidewall of spring casing; Axis is arranged in the horizontal axle sleeve of spring casing, and the two ends of axis are bumped into bearing, and then end cap is set up at the two ends of axle, is positioned on by handle on one end of axis; Sliding nut has in the horizontal direction near axis side and carves type groove, axis corresponding with it and sliding nut contact segment are for carving profile shaft structure, rotate axis by handle, axis can be screwed in type of the carving groove of sliding nut, make sliding nut not carry out axial motion; Be enclosed within valve rod by spring case lid, sealed by spring casing with it, spring case lid is connected with spring casing screw; Handwheel is positioned on the upper end of valve rod, fixes with nut.
The lower end surface of described sliding nut has the circular groove of fixing spring, and upper-end surface is drilled with two apertures for nut is installed use on valve rod; The side of sliding nut cylndrical surface has a longitudinal groove, can not be rotated can block with feather key plate; The opposite side of cylndrical surface has wedge groove in the horizontal direction, and a limit of wedge groove is circular arc, and another limit is straight line, and carving profile shaft can screw in groove along arc-shaped edges, is blocked by sliding nut.
The contact shaft part of described axis and sliding nut wedge groove is one section and carves profile shaft structure, i.e. non-completely circular structure, a limit in its cross section is circular arc, another two limits are straight line, by the rotation of axle, the arc-shaped edges of axle can screw in type of the carving groove of sliding nut along the arc-shaped edges of sliding nut, and one of them straight line leans against sliding nut and carves on the straight line of type groove; The two ends of axis are that square axle structure or circular shaft add bond structure, and one end is wherein used for the handle of installation manipulator behaviour, and the other end is for installing the driving bindiny mechanism of manipulation automatically.
Described spring casing has valve gap function concurrently, the lower end structure of its casing, in the quick-opening valve overall structure realized with this valve rod quick-acting mechanism, for limiting the space of valve rod upwards action; Bottom in spring casing has the circular groove for fixing spring, and ledge structure is arranged at top, moves downward space for limit slippage nut.
Described flap pressure ring is socketed in the lower end of valve rod, and pressure ring, with being threaded, to block with back-up ring and prevents it from loosening by pressure ring and flap; Pressure ring and valve rod are Spielpassung, and valve rod and flap can relatively rotate.
The invention has the beneficial effects as follows: namely this mechanism can make valve rod fast upward motion in an automatic fashion, valve rod can be moved upward rapidly in the mode of mechanism hand behaviour again; This invention valve rod quick-acting mechanism bearing capacity is large, reliable in action; Be applicable to namely need automatically to control, have mechanism hand to grasp the instant protection valve of mechanism again, be applicable to the application places that the security requirement of centering pressure and high voltage protective valve is high; Utilize this mechanism can design corresponding quick-closing valve and quick-opening valve.
accompanying drawing illustrates:
Fig. 1 is structural representation of the present invention and the enforcement illustration realizing quick-opening valve.
Fig. 2 is the side view of Fig. 1.
Fig. 3 is the enforcement illustration realizing quick-closing valve.
Fig. 4 is sliding nut structural representation plan view.
Fig. 5 is sliding nut structural representation plan view.
Fig. 6 is sliding nut structural representation left view.
Fig. 7 is sliding nut structural representation right elevation.
Fig. 8 is clamping shaft structure schematic diagram.
Fig. 9 is that clamping shaft structure A is to schematic cross-section.
Figure 10 is feather key plate structure schematic diagram plan view.
Figure 11 is feather key plate structure schematic diagram left view.
Figure 12 is sliding nut and the first example structure schematic diagram of axis matching relationship.
Figure 13 is sliding nut and axis matching relationship the second example structure schematic diagram.
1-handwheel in figure; 3-valve rod; 4-sliding nut; 5-axis; 6-handle; 7-feather key plate; 8-spring; 9-spring case lid; 10-spring casing; 11-flap; 12-pressure ring; 13-back-up ring; 14-valve seat; 15-valve body; 18-bearing; 19 end caps.
embodiment:
With reference to accompanying drawing, a kind of valve rod upwards quick-acting mechanism, the lower end surface of described sliding nut 4 has the circular groove of fixing spring, and upper-end surface is drilled with two apertures for nut is installed use on valve rod 3; The side of sliding nut 4 cylndrical surface has a longitudinal groove, can not be rotated can block with feather key plate 7; The opposite side of cylndrical surface has wedge groove in the horizontal direction, and a limit of wedge groove is circular arc, and another limit is straight line, and carving profile shaft can screw in groove along arc-shaped edges, is blocked by sliding nut 4.
Described axis 5 is one section with the contact shaft part of sliding nut 4 wedge groove and carves profile shaft structure, i.e. non-completely circular structure, a limit in its cross section is circular arc, another two limits are straight line, by the rotation of axle, the arc-shaped edges of axle can screw in type of the carving groove of sliding nut 4 along the arc-shaped edges of sliding nut 4, and one of them straight line leans against sliding nut 4 and carves on the straight line of type groove; The two ends of axis 5 are that square axle structure or circular shaft add bond structure, and one end is wherein used for the handle 6 of installation manipulator behaviour, and the other end is for installing the driving bindiny mechanism of manipulation automatically.
Described spring casing 10 has valve gap function concurrently, the lower end structure of its casing, in the quick-opening valve overall structure realized with this valve rod quick-acting mechanism, for limiting the space of valve rod 3 upwards action; Bottom in spring casing 10 has the circular groove for fixing spring, and ledge structure is arranged at top, moves downward space for limit slippage nut 4.
Embodiment one: composition graphs 1,2,4,5,6,7,8,9,10,11,12 and 13 illustrates present embodiment.Present embodiment comprises handwheel 1, valve rod 3, sliding nut 4, axis 5, handle 6, feather key plate 7, spring 8, spring case lid 9, spring casing 10, flap 11, pressure ring 12, back-up ring 13, bearing 18, end cap 19, and the upper sealing surface of the flap lower sealing surface on valve rod and the valve seat on valve cooperatively interacts and constitutes a quick open valve.
With pressure ring 12, flap 11 is socketed in the lower end of valve rod, pressure ring 12 is connected with rib-loop with flap 11, and back-up ring 13 is embedded in the inner card cage ring of flap, and prevent pressure ring 12 from loosening, pressure ring 12 and valve rod 3 are Spielpassung, and valve rod can rotate relative to flap; The valve rod 3 that flap 11 is housed penetrates from the bottom of spring casing 10 and arrives spring box body 10; Bottom in spring casing 10 has circular groove, and for fixing spring use, spring 8 is inserted in valve rod and is positioned in the circular groove of bottom in spring casing 10; Sliding nut 4 is screwed into valve rod 3, be pressed on spring 8, feather key plate 7 inserts in the longitudinal groove of nut 4 side through the side rectangular hole of spring casing 10, and sliding nut 4 can not be rotated, can only move, feather key plate 7 is screwed on the sidewall of spring casing 10; Axis 5 is arranged in the horizontal axle sleeve of spring casing 10, and the two ends of axis 5 are bumped into bearing 18, and then end cap 19 is set up at the two ends of axle 5, is positioned on by handle 6 on one end of axis 5; Sliding nut 4 has in the horizontal direction near axis 5 side and carves type groove, axis 5 corresponding with it and sliding nut 4 contact segment are for carving profile shaft structure, rotate axis 5 by handle, axis 5 can be screwed in type of the carving groove of sliding nut 4, make sliding nut 4 not carry out axial motion; Be enclosed within by spring case lid 9 on valve rod 3, sealed by spring casing 10 with it, spring case lid 9 is connected with screw with spring casing 10; Handwheel 1 is positioned on the upper end of valve rod 3, fixes with nut.
Fig. 4,5,6 and 7 is the plan view of sliding nut, plan view, left view and right elevation, the top of type of the carving groove of the nut in figure is arc structure, lower end is linear structure, and carving profile shaft section and can screwing in type of the carving groove of nut by turning clockwise of corresponding axis 5, blocks nut 4; See Figure 13, also nut 4 can be carved Blanking cavity design be top is straight line, and bottom is circular arc, now by be rotated counterclockwise can screw in nut type of carving groove in.
Fig. 8,9 is the structural representation of axis 5, is that circular arc carves profile shaft structure with the shaft part of nut 4 contact segment.
Figure 10 is the structural representation plan view of feather key plate.
Figure 11 is the structural representation left view of feather key plate.
The top that Figure 12 describes nut 4 wedge groove is circular arc, the following this structure for straight line, with the screw-in matching relationship carving type axis.
The top that Figure 13 describes nut 4 wedge groove is straight line, the following this structure for circular arc, with the screw-in matching relationship carving type axis.
Fig. 1 is while description valve rod quick-acting mechanism, and also illustrate a kind of quick open valve embodiment formed with such valve rod quick-acting mechanism, its working principle is as follows:
When valve rod 3 moves upward with flap 11, when the upper end of flap is withstood by the lower edge of spring casing 10, valve is in full open position, now rotate handwheel 1 towards a direction, continue to open valve, because now valve is in full open position, valve rod 3 only can rotate, valve rod 3 and flap 11 all can not up move again, sliding nut 4 have to start to move downward, and is rotated further handwheel 1, until sliding nut 4 is withstood by the step of upper end in spring casing 10, handwheel 1 cannot rotate again, and spring 8 is compacted; Now rotating axis 5 by handle 6 makes it screw in the wedge groove of sliding nut 4, is pinned by sliding nut 4; Now rotate backward handwheel 1, valve rod 3 is down moved together with flap 11, until valve is closed completely, handwheel 1 cannot be rotated again; When the urgent valve opening of needs, or rotate backward axis 5 by handle 6, or rotate backward axis 5 at the other end of axis 5 by automechanism, make axis 5 and sliding nut 4 interrogate speed and throw off, sliding nut 4 and valve rod 3 are interrogated speed and are moved upward under the effect of spring 8, until valve is opened completely.
Embodiment two: composition graphs 3 illustrates present embodiment.The lower sealing surface of the valve seat 14 on the flap 11 on valve rod 3 on sealing surface and valve cooperatively interacts and constitutes a quick-closing valve door.The working principle of present embodiment and mode of execution one is slightly different, when valve rod 3 being moved upward towards a direction rotation handwheel 1 together with flap 11, valve rod 3 stop by the lower sealing surface of valve seat, instead of stop by the lower edge of spring casing 10, now be rotated further valve rod 3, sliding nut 4 moves downward, until blocked by the step of casing 10; When rotating backward handwheel 1, valve is opened, until handwheel 1 is blocked cannot rotate again by spring case lid 9, and state valve being in be fully opened, instead of because contacting the sealing surface of valve, making valve be in closed condition completely, and handwheel 1 cannot be rotated again.
Claims (5)
1. a valve rod upwards quick-acting mechanism, mainly comprise handwheel (1), valve rod (3), sliding nut (4), axis (5), handle (6), feather key plate (7), spring (8), spring case lid (9), spring casing (10), flap (11), bearing (18), end cap (19), it is characterized in that: flap (11) is positioned on the lower end of valve rod (3), the valve rod (3) that flap (11) are housed penetrates from the bottom of spring casing (10) and arrives spring box body (10); Bottom in spring casing (10) has circular groove, and for fixing spring use, spring (8) is inserted in valve rod and is positioned in the circular groove of bottom in spring casing (10); Sliding nut (4) is screwed into valve rod (3), be pressed on spring (8), feather key plate (7) inserts in the longitudinal groove of sliding nut (4) side through the side rectangular hole of spring casing (10), sliding nut (4) can not be rotated, can only move, feather key plate (7) is screwed on the sidewall of spring casing (10); Axis (5) is arranged in the horizontal axle sleeve of spring casing (10), and the two ends of axis (5) are bumped into bearing (18), and then end cap (19) is set up at the two ends of axis (5), are positioned on one end of axis (5) by handle (6); Sliding nut (4) has in the horizontal direction near axis (5) side and carves type groove, axis (5) corresponding with it and sliding nut (4) contact segment are for carving profile shaft structure, axis (5) is rotated by handle (6), axis (5) can be screwed in type of the carving groove of sliding nut (4), make sliding nut (4) not carry out axial motion; Be enclosed within by spring case lid (9) on valve rod (3), sealed by spring casing (10) with it, spring case lid (9) is connected with screw with spring casing (10); Handwheel (1) is positioned on the upper end of valve rod (3), fixes with nut.
2. a kind of valve rod according to claim 1 upwards quick-acting mechanism, is characterized in that: the lower end surface of described sliding nut (4) has the circular groove of fixing spring, and upper-end surface is drilled with two apertures for nut is installed use on valve rod (3); The side of sliding nut (4) cylndrical surface has a longitudinal groove, being blocked with feather key plate (7) and can not rotate; The opposite side of cylndrical surface has wedge groove in the horizontal direction, a limit of wedge groove is circular arc, another limit is straight line, is carve the axis of profile shaft structure (5) to screw in groove along arc-shaped edges, is blocked by sliding nut (4) with sliding nut (4) contact segment.
3. a kind of valve rod according to claim 1 upwards quick-acting mechanism, it is characterized in that: described axis (5) is one section with the contact shaft part of sliding nut (4) wedge groove and carves profile shaft structure, i.e. non-completely circular structure, a limit in its cross section is circular arc, another two limits are straight line, by the rotation of axis, to be one section of arc-shaped edges carving the axis of profile shaft structure can screw in type of the carving groove of sliding nut (4) along the arc-shaped edges of sliding nut (4) the contact shaft part carving type groove with sliding nut (4), one of them straight line leans against sliding nut (4) and carves on the straight line of type groove, the two ends of axis (5) are that square axle structure or circular shaft add bond structure, and one end is wherein used for the handle (6) of installation manipulator behaviour, and the other end is for installing the driving bindiny mechanism of manipulation automatically.
4. a kind of valve rod according to claim 1 upwards quick-acting mechanism, it is characterized in that: described spring casing (10) has valve gap function concurrently, the lower end structure of its casing, in the quick-opening valve overall structure realized with this valve rod quick-acting mechanism, for limiting the space of valve rod (3) upwards action; Bottom in spring casing (10) has the circular groove for fixing spring, and ledge structure is arranged at top, moves downward space for limit slippage nut (4).
5. a kind of valve rod according to claim 1 upwards quick-acting mechanism, it is characterized in that: described flap (11) pressure ring (12) is socketed in the lower end of valve rod, pressure ring (12), with being threaded, to block with back-up ring (13) and prevents it from loosening by pressure ring (12) and flap; Pressure ring (12) and valve rod (3) are Spielpassung, and valve rod (3) and flap (11) can relatively rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310747653.1A CN103671980B (en) | 2013-12-31 | 2013-12-31 | A kind of valve rod upwards quick-acting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310747653.1A CN103671980B (en) | 2013-12-31 | 2013-12-31 | A kind of valve rod upwards quick-acting mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103671980A CN103671980A (en) | 2014-03-26 |
| CN103671980B true CN103671980B (en) | 2015-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310747653.1A Active CN103671980B (en) | 2013-12-31 | 2013-12-31 | A kind of valve rod upwards quick-acting mechanism |
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| CN (1) | CN103671980B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2222904Y (en) * | 1995-03-13 | 1996-03-20 | 邹锡安 | Valve for liquid level meter for boiler |
| CN2835718Y (en) * | 2005-08-07 | 2006-11-08 | 董汉翔 | Quick cut-off valve |
| CN2929383Y (en) * | 2006-06-23 | 2007-08-01 | 中外合资宁波埃美柯铜阀门有限公司 | Rail type cock valve |
| CN201363478Y (en) * | 2009-01-19 | 2009-12-16 | 浙江欧斯特泵阀有限公司 | Valve operating mechanism |
| CN203627838U (en) * | 2013-12-31 | 2014-06-04 | 中国船舶重工集团公司第七�三研究所 | Upward quick acting mechanism for valve rod of valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001173832A (en) * | 1999-12-15 | 2001-06-29 | Yokota Seisakusho:Kk | Constant flow valve system with liquid level control mechanism |
-
2013
- 2013-12-31 CN CN201310747653.1A patent/CN103671980B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2222904Y (en) * | 1995-03-13 | 1996-03-20 | 邹锡安 | Valve for liquid level meter for boiler |
| CN2835718Y (en) * | 2005-08-07 | 2006-11-08 | 董汉翔 | Quick cut-off valve |
| CN2929383Y (en) * | 2006-06-23 | 2007-08-01 | 中外合资宁波埃美柯铜阀门有限公司 | Rail type cock valve |
| CN201363478Y (en) * | 2009-01-19 | 2009-12-16 | 浙江欧斯特泵阀有限公司 | Valve operating mechanism |
| CN203627838U (en) * | 2013-12-31 | 2014-06-04 | 中国船舶重工集团公司第七�三研究所 | Upward quick acting mechanism for valve rod of valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103671980A (en) | 2014-03-26 |
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Effective date of registration: 20151221 Address after: 150090 No. 35, Honghu Road, Yingbin Road, Harbin hi tech Development Zone, Heilongjiang, China Patentee after: Harbin broad power technology development Co., Ltd. Address before: 150000 Honghu Road, Daoli District, Heilongjiang, No. 35, Harbin Patentee before: No.703 Inst. China Ship Heavy Industry Group Co. |