KR101684656B1 - Testing device for ball screw of landing gear for military aircraft - Google Patents

Testing device for ball screw of landing gear for military aircraft Download PDF

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Publication number
KR101684656B1
KR101684656B1 KR1020150163124A KR20150163124A KR101684656B1 KR 101684656 B1 KR101684656 B1 KR 101684656B1 KR 1020150163124 A KR1020150163124 A KR 1020150163124A KR 20150163124 A KR20150163124 A KR 20150163124A KR 101684656 B1 KR101684656 B1 KR 101684656B1
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South Korea
Prior art keywords
ball screw
screw
nut
slider
base
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KR1020150163124A
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Korean (ko)
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이한규
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(주)한국항공기술
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    • B64F5/0045—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C25/00—Alighting gear
    • B64C25/02—Undercarriages
    • B64C25/08—Undercarriages non-fixed, e.g. jettisonable
    • B64C25/10—Undercarriages non-fixed, e.g. jettisonable retractable, foldable, or the like
    • B64C25/18—Operating mechanisms
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts
    • G01M13/02—Gearings; Transmission mechanisms
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts
    • G01M13/02—Gearings; Transmission mechanisms
    • G01M13/025—Test-benches with rotational drive means and loading means; Load or drive simulation

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transmission Devices (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

The present invention relates to a device for testing a ball screw of landing gear for a military aircraft. More specifically, the device for testing a ball screw of landing gear for a military aircraft comprises: a base having a pair of screw supports to rotatably support a ball screw; a motor to drive the ball screw mounted on the screw supports of the base; and a nut clamp to guide a rectilinear motion of a nut of the ball screw while the nut is clamped to prevent the nut from rotating with a screw shaft when driving the ball screw mounted on the screw supports of the base. Whether a ball screw which has undergone an overhaul operates and a gap of the ball screw can be quickly and accurately tested at a work site where the overhaul is carried out to easily perform the overhaul of the ball screw used in landing gear of a military aircraft which was relied upon a foreign manufacturer in Korea. Therefore, maintenance can be performed in Korea to prevent a huge outflow of foreign currency. A period for providing a repair circulation item which took at least six months when repaired in a foreign country is drastically shortened to less than 45 days to reduce the number of spare parts for maintaining wartime operational readiness to greatly reduce national defense expenditure.

Description

Technical Field [0001] The present invention relates to a ball screw inspection apparatus for a military landing gear,

The present invention relates to an apparatus for inspecting a ball screw of a landing gear for military use, and more particularly, to a ball screw inspecting apparatus for a military landing gear, which comprises a base having a pair of screw supports for rotatably supporting a ball screw, And a nut clamp for guiding the linear movement of the nut in a state where the nut of the ball screw is not rotated together with the screw shaft when the ball screw mounted on the screw support of the base is clamped, It is possible to inspect the operation and clearance of the ball screw that has undergone the disassembly maintenance quickly and accurately at the worksite where the disassembly and maintenance are performed, and it is easy to overhaul the ball screw used in the military landing gear It is possible to prevent the huge foreign currency leakage by realizing localization of maintenance. In addition, it is possible to dramatically shorten the delivery period of repair cycle items, which took more than 6 months for overseas repairs, to within 45 days, thereby reducing the amount of spare parts for maintenance of wartime operation, The present invention relates to a ball screw inspecting apparatus.

In general, military aircraft are used for military purposes. They include fighters who perform missions such as air combat and ground attack, bombers that take on the mission of ground bombing, attackers who carry out ground attack missions, , A reconnaissance aircraft that takes charge of reconnaissance missions, and so on.

These military aircraft are military weapons that have to be operated for decades, and the airframe itself is quite expensive, but the price of the parts is also unbearable. Especially, many parts depend on imports from overseas and the price is beyond the imagination , And the overhaul of the parts is made only by the manufacturer, so that the maintenance cost is also increased.

As shown in FIG. 1, a ball screw 40, which converts rotational motion of the screw shaft 41 into rectilinear motion of the nut 42, is mounted on a landing gear that operates when raising or lowering a wheel of a military aircraft The ball screw 40 should be overhauled according to the maintenance manual provided by the manufacturer at regular intervals due to wear of the bearing ball inside the nut 41 when used for a long period of time.

However, the maintenance manual provided by the manufacturer only specifies the condition of the ball screw requiring maintenance and the dimensions for the inspection after maintenance, and since there is no description of the specific maintenance and inspection method at all, The overhaul cost should be from several hundreds of millions to several hundreds of billions of won annually, which will cause a huge amount of foreign currency to flow out. It will take six months or more before the overhauled parts are received from the overseas production companies. The service period of repair circulation items is remarkably long, which causes an increase in the number of spare parts for maintenance of wartime operational control, which in turn increases the defense cost burden.

In order to solve the problem caused by the unreasonable production company overhaul, the manufacturer has studied the method of introducing the equipment used for the inspection at the time of production, but the manufacturer does not provide any information about it, and even if the equipment costs billions It is difficult to judge whether the current number of military aircraft possessed by the ROKAF, that is, whether it is suitable for small-scale maintenance and inspection, will be introduced.

Therefore, we do not provide information on the equipment for inspecting the ball screw of the landing gear of the military that has undergone the disassembly and maintenance, but meet the criteria required in the maintenance manual provided by the manufacturer in response to the manufacturer who monopolizes the overhole amount generated thereby. The development of a ballscrew inspection apparatus for a landing gear for military use which can realize the localization of the maintenance is required.

Korean Patent Publication No. 10-0938121

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a ball screw for a ball screw, comprising: a base having a pair of screw supports for rotatably supporting a ball screw; And a nut clamp for guiding the linear motion of the nut in a state where the nut of the ball screw is not rotated together with the screw shaft when the ball screw mounted on the screw support of the base is clamped so as not to rotate together with the screw shaft, The operation and clearance of the screw can be quickly and accurately inspected at the worksite where decomposition maintenance is performed, so that it is possible to easily perform the overhaul of the ball screw used in the military landing gear, Not only to make it possible to prevent enormous foreign currency outflows, To dramatically reduce the time period provided for repair items that were circulating spent more than six months for repairs within 45 days to reduce the quantity of spare parts for wartime readiness and to maintain the aspect that allows you to significantly reduce the defense budget.

According to an aspect of the present invention, there is provided a ball screw for a ball screw, comprising: a base on which a screw support for rotatably supporting a screw shaft of a ball screw is fixedly installed, a base on which a guide rail is fixedly installed in a longitudinal direction, A ball screw driving motor fixedly mounted on the screw support and coupled to one end of the screw shaft of the screw support through a coupling, and a plurality An upper and a lower body which are mounted on the upper surface of the slider and which are vertically split and formed around the nut insertion hole, one end is hinged by a hinge pin and the other end is engaged by a clamping bolt, And a bolt fixed nut clamp made up of a slider coupling plate formed on the lower side And that is characterized.

In addition, the present invention is characterized in that, instead of the bolt-fixed nut clamp, a hydraulic fixed nut clamp includes a flat plate-like slider coupling plate,

Figure 112015113355693-pat00001
A hydraulic cylinder in which a pressure plate is coupled to an end portion of a piston rod which is vertically installed at a central portion of an upper surface of the frame and penetrates a central portion of an upper surface of the frame, And a pair of nut supporting blocks which are vertically divided and formed around the nut seating groove.

According to the present invention, the upper and lower bodies are mounted on the upper surface of the slider and are divided up and down around the screw insertion hole, the slider coupling plate is formed on the lower portion of the lower body, And a clamping nut secured to an upper end of a screw rod protruding to an upper portion of the upper body through insertion grooves formed on both side surfaces of the upper body.

According to another aspect of the present invention, there is provided a sliding type portable terminal, comprising: a guide groove formed on one side surface of the base in a longitudinal direction; a sliding case installed to be movable left and right along the guide groove, A slide plate inserted into the guide groove, one end of which is coupled to the slide plate and the other end of which is inserted through the sliding case, and a screw rod projecting through the sliding case and protruding from the other end of the screw rod A pushing gauge mounted in the sliding case; a pressing handle coupled to a side surface of the slider with a bracket interposed therebetween; and a gauge holder on an upper portion of the base, And further comprising a dial gauge mounted in an interposed state .

According to the apparatus for inspecting a ball screw of a landing gear for military use according to the present invention configured as described above, it is possible to quickly and accurately inspect whether or not the ball screw that has undergone the disassembly and maintenance operation is clear at a worksite where decomposition and maintenance are performed Overhaul of ballscrews used in military gears for military use, which depend on overseas production companies, can be easily carried out in Korea, so it is possible to prevent the huge foreign currency leakage by realizing localization of maintenance. It is possible to drastically reduce the defense budget by reducing the number of spare parts for maintaining the wartime operational posture by drastically shortening the period of providing the repair circulation items that have been used within 45 days.

1 is a perspective view showing a ball screw used in a conventional landing gear for military use.
2 is an exploded perspective view showing an apparatus for inspecting a ball screw of a landing gear for military use according to the present invention.
3 (B) is an explanatory view showing a bolt-fixed nut clamp used in the ball screw inspection apparatus according to the present invention;
4 is an explanatory view showing a full travel inspection process of a ball screw by the ball screw inspection apparatus of the present invention.
5 (B) is an explanatory view showing a hydraulic clamp nut clamp used in the ball screw inspection apparatus according to the present invention.
6 (a) and 6 (b) are explanatory views showing a movable screw support used in a ball screw inspection apparatus according to the present invention;
7 is an explanatory view showing a full travel inspection process of a single-shaft ball screw by the ball screw inspection apparatus of the present invention.
8 (A) and 8 (B) are explanatory diagrams showing a mechanism for a clearance inspection used in a ball screw inspection apparatus according to the present invention;
FIG. 9 is an explanatory view showing a ball screw inspection process by the ball screw inspection apparatus of the present invention. FIG.

Hereinafter, the present invention will be described in detail with reference to FIG. 2 to FIG. 9. FIG.

2, a ball screw inspecting apparatus for a military landing gear according to the present invention includes a base 2, a ball screw driving motor 5, a plurality of sliders 6, a bolt-fixed nut clamp 7, .

Screw supports 3a and 3b for rotatably supporting a screw shaft 41 of the ball screw 40 are fixedly installed on both sides of the upper surface of the base 2, The guide rail 4 is fixed in the longitudinal direction.

The ball screw driving motor 5 drives the ball screw 40 mounted on the screw supports 3a and 3b of the base 2 and is fixed to one side of the upper surface of the base 2 And is coupled to the one end of the screw shaft 41 of the ball screw 40 mounted on the screw supports 3a and 3b with the coupling 5a interposed therebetween.

The slider 6 is for guiding the linear movement of the nut 42 of the ball screw 40 mounted on the screw supports 3a and 3b of the base 2, It is preferable to add a set screw 6a which is fastened to pass through the upper surface of the slider 6 in order to fix the slider 6 so as not to move as necessary .

The bolt fixing nut clamp 7 is mounted on the upper surface of the slider 6 and when the ball screw 40 mounted on the screw supports 3a and 3b of the base 2 is driven, The nut 42 is clamped so as not to rotate together with the screw shaft 41.

As shown in FIG. 3 (A), the bolt-fixed nut clamp 7 is divided vertically around the nut insertion hole 9, one end is hinged by the hinge pin 10, Upper and lower bodies 8a and 8b coupled by a clamping bolt 11 and a slider coupling plate 12 formed under the lower body 7b.

3, the bolt fixing nut clamp 7 having the above-described structure is inserted into the nut insertion hole 9 formed between the upper body 8a and the lower body 8b by a ball screw (not shown) 40 can be easily clamped by fastening the clamping bolts 11 after inserting the nuts 42 of the bolts 40.

It is also possible to use a hydraulic fixed nut clamp 13 instead of the bolt fixed nut clamp 7 depending on the type of the ball screw 40 used in the landing gear for military use.

As shown in FIG. 5 (a), the hydraulic fixed nut clamp 13 is formed on the upper part of the slider coupling plate 14 in the form of a flat plate,

Figure 112015113355693-pat00002
And a pressure plate 17 is coupled to an end of the piston rod 16a passing through the center of the upper surface of the frame 15 at the center of the upper surface of the frame 15. [ A pair of nut supporting blocks 18a and 18b are vertically installed on both sides of the frame 15 so that the nut supporting blocks 18a and 18b are vertically divided .

As shown in FIG. 5 (B), the hydraulic fixed nut clamp 13 having such a structure is provided with the nut supporting blocks 18a and 18b inserted into the both sides of the nut 42 of the ball screw 40 The ball screws 40 are passed through the frame 15 and the nut supporting blocks 18a and 18b sandwiched between both sides of the nut 42 are set on the lower side of the pressure plate 17, 16 so that the pressing plate 17 coupled to the piston rod 16a presses the nut supporting blocks 18a and 18b fitted to the both sides of the nut 42 so as to be easily clamped.

Since the hydraulic clamp nut 13 can freely adjust the pressure applied to the hydraulic cylinder 16, particularly when the ball screw 40 which needs to be inspected for operation in a loaded state is inspected So that it can be usefully used.

The ball screw inspecting apparatus according to the present invention may also be provided with a movable screw support 20 for mounting a single shaft ball screw on the base 2.

The ball screw inspecting apparatus according to the present invention is characterized in that the screw supports 3a and 3b are fixed to both sides of the upper surface of the base 2 so that the ball screw having a length shorter than the interval between the screw supports 3a and 3b is mounted However, if the movable screw support 20 is used, it is possible to easily mount the single screw ball screw having a length shorter than the interval between the screw supports 3a and 3b.

The movable screw support 20 is mounted on the upper surface of the slider 6. The movable screw support 20 supports the upper and lower bodies 30 and 32 which are vertically divided and formed around the screw insertion hole 23, A slider coupling plate 24 formed at a lower portion of the lower body 22 and a pair of screw rods 25 hinged to be vertically rotatable on both sides of the lower body 22, And a clamping nut 26 fastened to an upper end of a screw rod 25 protruding to the upper portion of the upper body 21 through an insertion groove 21a formed on both side surfaces of the upper body 21. [

6 (b), the movable screw support 20 constructed as described above is inserted into the screw insertion hole 23 formed between the upper body 21 and the lower body 22, The clamping nut 26 can be easily clamped after the screw shaft 41 is inserted.

Since the shape of the screw insertion hole 23 formed between the upper body 21 and the lower body 22 is formed to be a square shape in the movable screw support 20, the screw shaft 41 of the ball screw 40 It is possible to allow rotation of the screw shaft 41 when the clamping nut 26 fastened to the screw rod 25 is loosely tightened so that no load is applied to the screw shaft 41, The screw shaft 41 can be prevented from rotating when the clamping nut 26 is strongly tightened.

The apparatus for inspecting a ball screw according to the present invention may further include a clearance inspection mechanism for inspecting a clearance between the screw shaft 41 and the nut 42 of the ball screw 40 after completion of the disassembly and maintenance.

As shown in Fig. 8 (A), the clearance inspection instrument includes a guide groove 2a, a sliding case 27, a case fixing member 28, a push-pull gauge 29, a pressing handle 30, And a dial gauge (31).

The guide groove 2a is formed in a longitudinal direction on one side of the base 2 to guide the push-pull gauge 29 received in the sliding case 27 to the left and right.

The sliding case 27 is installed to be movable left and right along the guide groove 2a and has a rectangular housing shape in which a front portion and a side portion are opened.

The case fixing part 28 is for fixing the sliding case 27 so as not to move and includes a slide plate 28a to be inserted into the guide groove 2a and one end to be engaged with the slide plate 28b And the other end is fixed to a nut 28c for fastening to the other end of the screw rod 28b protruding through the sliding case 27, .

The push-pull gauge 29 is mounted inside the sliding case 27 to accurately measure the force applied to the nut 42 of the ball screw 40 by the pressing handle 30 .

The pressing handle 30 is coupled to the side surface of the slider 6 with the bracket 30a interposed therebetween so as to apply a constant force to the nut 42 of the ballscrew 40, do.

The dial gauge 31 is mounted on the upper portion of the base 2 with a gauge holder 31a interposed therebetween. The dial gauge 31 is attached to the nut 42 of the ball screw 40 using the pressing handle 30 A clearance between the screw shaft 41 and the nut 42 of the ball screw 40 is measured when a constant force is applied. The gauge holder 31a uses a known gauge holder in the form of a magnet or a clamp do.

8 (b), the ball screw 40 having been subjected to the disassembly and maintenance is mounted on the upper portion of the base 2, and then the push-pull gauge 29 Is moved to the slider 6 to which the nut 42 of the ball screw 40 is clamped along the guide groove 2a formed on the side surface of the base 2 and then the case fastener 28 And the dial gauge 31 mounted on the gauge holder 31a is brought into contact with one end of the nut 42 of the ball screw 40 and then the pressing gauge 31 mounted on the side surface of the slider 6 The clearance generated between the screw shaft 41 of the ball screw 40 and the nut 42 can be easily inspected by applying a constant force to the nut 42 of the ball screw 40 using the handle 30 .

A ball screw inspection process using the ball screw inspection apparatus of the landing gear for military use according to the present invention will be described as follows.

The full travel inspection of the long and short shaft ballscrews that have undergone the repair and maintenance can be performed by using the ball screw inspecting apparatus of the landing gear for military use according to the present invention. The clearance inspection is performed to check whether the nut 42 is smoothly moved in accordance with the rotation of the shaft 41. When the screw shaft 41 of the ball screw 40 is fixed, The clearance between the screw shaft 41 and the nut 42 is checked.

4, the ball screw 40 is mounted on the screw supports 3a and 3b provided on both sides of the upper surface of the base 2, , One end of the screw shaft 41 is connected to the ball screw driving motor 5 via the coupling 5a and then the bolt fixed nut clamp 7 mounted on the upper surface of the slider 6 is used The setting of the long ball screw 40 is completed by clamping the nut 42 of the ball screw 40. [

When the screw shaft 41 of the ball screw 40 is rotated by driving the ball screw driving motor 5 in the state where the setting of the long axis ball screw 40 is completed, The nut 42 of the ball screw 40 clamped in the bolt fixed nut clamp 7 is linearly moved along the guide rail 4 without rotating together with the screw shaft 41. At this time, The nut 42 of the ball screw 40 is smoothly moved without generating noise.

7, a ball screw 40 (see FIG. 7) is provided between the screw support 3a provided on one side of the upper surface of the base 2 and the movable screw support 20, One end of the screw shaft 41 is connected to the ball screw driving motor 5 via the coupling 5a and then the hydraulic fixed nut clamp mounted on the upper surface of the slider 6 The setting of the uniaxial ball screw 40 is completed by clamping the nut 42 of the ball screw 40 by using the screw 13.

The movable screw support 20 supporting the other end of the single-shaft ball screw 40 includes a clamping nut 25 fastened to the screw rod 25 so as not to apply a load to the screw shaft 41 of the ball screw 40, So that the screw shaft 41 can be smoothly rotated by the ball screw driving motor 5 by loosely tightening the screw shaft 26.

When the screw shaft 41 of the ball screw 40 is rotated by driving the ball screw driving motor 5 in the state where the setting of the single screw ball screw 40 is completed, The nut 42 of the ball screw 40 clamped in the fixed hydraulic nut clamp 13 is linearly moved along the guide rail 4 without rotating together with the screw shaft 41. At this time, The nut 42 of the ball screw 40 is smoothly moved without generating noise.

Since the single-shaft ball screw 40 is mainly used in an environment where the wind pressure is high, it is necessary to inspect Full Travel in a loaded state. In this case, the hydraulic cylinder 16 The full travel of the uniaxial ball screw 40 is inspected while the load applied to the nut 42 of the uniaxial ball screw 40 is increased.

9, a pair of movable screw supports 20 located on both sides of the upper surface of the base 2 are provided with screw shafts (not shown) of the ball screw 40 And the nut 42 of the ball screw 40 is clamped in the hydraulic clamp nut 13 located between the pair of movable screw supports 20 and then the push pull gauge 29 is clamped. The slide case 27 accommodating the slide case 27 is moved to the slider 6 where the nut 42 of the ball screw 40 is clamped along the guide groove 2a formed on the side surface of the base 2, The slide case 27 is fixed by using the case fastener 28 and the dial 28 mounted on the gauge holder 31a is brought into contact with the pushing handle 30 mounted on the side surface of the slider 6. Then, By bringing the gauge 31 into contact with one end of the nut 42 of the ball screw 40, .

At this time, the slider 6 on which the movable screw support 20 is mounted is firmly fixed using a set screw 6a fastened to the upper surface of the slider 6 so as not to move left and right.

The movable screw support 20 for clamping the screw shaft 41 of the ball screw 40 strongly tightens the clamping nut 26 fastened to the screw rod 25 so that the pressing handle 30 is used When the nut 42 of the ball screw 40 is applied with a force, the screw shaft 41 is fixed so as not to rotate or move left and right.

When the setting is completed, the nut 42 of the ball screw 40 is displayed on the push-pull gauge 29 using the pressing handle 30 mounted on the side of the slider 6 according to the maintenance manual The amount of movement of the nut 42 of the ball screw 40 is measured by the dial gauge 31 so that the clearance generated between the screw shaft 41 of the ball screw 40 and the nut 42 .

According to the ball screw inspecting apparatus 1 of the landing gear for military use according to the present invention constructed as described above, the operation and clearance of the ball screw 40, which has completed the disassembly and maintenance, So that it is possible to easily carry out the overhaul of the ball screw 40 used in the landing gear of the military which has relied on the overseas production company, so that the localization of the maintenance can be realized, In addition, the service period of repair cycle items, which took more than 6 months for overseas repairs, will be drastically shortened to within 45 days, thus reducing the amount of spare parts for maintenance of wartime operational control, thereby greatly reducing defense costs.

1: Ball Screw Inspection Apparatus 2: Base
2a: Guide groove 3a, 3b: Screw support
4: Guide rail 5: Motor for driving ball screw
5a: Coupling 6: Slider
6a: Set screw 7: Bolt fixed nut clamp
8a, 8b: upper and lower body 9: nut insertion hole
10: Hinge pin 11: Clamping bolt
12: Slider coupling plate 13: Hydraulic fixed nut clamp
14: Slider coupling plate 15: Frame
16: Hydraulic cylinder 16a: Piston rod
17: pressure plate 18a, 18b: nut retaining block
19: nut seat groove 20: movable screw support
21, 22: upper and lower body 21a: insertion groove
23: screw insertion hole 24: slider coupling plate
25: Screw rod 26: Clamping nut
27: sliding case 28: case fastener
28a: slide plate 28b:
28c: Fixing nut 29: Push-pull gauge
30: pressing handle 30a: bracket
31: dial gauge 31a: gauge holder

Claims (4)

A screw support rod for rotatably supporting a screw shaft of the ball screw is fixedly installed on both sides of the upper surface, a base on which a guide rail is fixedly installed in the longitudinal direction,
A ball screw driving motor fixed to one side of the upper surface of the base and coupled to one end of the screw shaft of the ball screw mounted on the screw support via a coupling,
A plurality of sliders provided on the guide rails of the base so as to be movable laterally,
An upper and a lower body which are mounted on the upper surface of the slider and which are vertically divided and formed around the nut insertion hole, one end of which is hinged by a hinge pin and the other end is engaged by a clamping bolt, And a bolt fixed nut clamp made up of a slider coupling plate formed on the bottom surface of the ball screw. The method according to claim 1,
And a hydraulic fixed nut clamp instead of the bolt fixed nut clamp,
The hydraulic fixed nut clamp may include:
A slider coupling plate having a flat plate shape mounted on an upper surface of the slider,
The slider coupling plate is fixed to the upper portion of the slider,
Figure 112016099641336-pat00003
Shaped frame,
A hydraulic cylinder installed perpendicularly to a central portion of an upper surface of the frame and having a pressure plate coupled to an end portion of a piston rod passing through a central portion of an upper surface of the frame,
And a pair of nut supporting blocks which are respectively inserted into both sides of the frame and which are vertically divided and formed around the nut mounting groove. 3. The method of claim 2,
A slider coupling plate formed at a lower portion of the lower body, and upper and lower bodies each of which is rotatably supported by the upper and lower bodies in the upper and lower portions of the lower body, respectively, And a clamping nut fixed to an upper end of a screw rod projecting to an upper portion of the upper body through an insertion groove formed on both side surfaces of the upper body, Screw inspection device. 4. The method according to any one of claims 1 to 3,
A guide groove formed on one side surface of the base in the longitudinal direction,
A sliding case installed to be movable laterally along the guide groove, the sliding case having a front portion and a side portion opened;
A screw rod which is inserted into the guide groove, one end of which is coupled to the slide plate and the other end of which protrudes through the sliding case, And a fastening nut fastened to the other end of the threaded rod,
A push-pull gauge mounted inside the sliding case,
A pressing handle coupled to a side surface of the slider with a bracket interposed therebetween,
Further comprising a dial gauge mounted on an upper portion of the base with a gauge holder interposed therebetween.
KR1020150163124A 2015-11-20 2015-11-20 Testing device for ball screw of landing gear for military aircraft KR101684656B1 (en)

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CN116104920A (en) * 2023-02-07 2023-05-12 江苏品德机电科技有限公司 Ball screw with simple disassembly and assembly and disassembly method thereof
CN117288461A (en) * 2023-09-20 2023-12-26 南京工艺装备制造有限公司 Measuring device for friction moment of planetary roller screw pair

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KR20030009884A (en) * 2001-07-24 2003-02-05 한국항공우주산업 주식회사 Landing gear door open and close device of aircraft
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CN106840730A (en) * 2017-03-22 2017-06-13 天津大学 A kind of test platform for studying single shaft resetting error mechanism
CN106979756A (en) * 2017-04-24 2017-07-25 华南理工大学 A kind of ball-screw gap and the measurement apparatus and method of rigidity
CN109425485A (en) * 2017-08-25 2019-03-05 南京雄豹精密机械有限公司 A kind of rolling ball screw assembly, multifunction test platform and its test method
CN109443751A (en) * 2018-12-17 2019-03-08 沈阳理工大学 A kind of multi-functional running in machine being applicable in Multiple Type ball screw assembly,
CN109443751B (en) * 2018-12-17 2024-02-23 沈阳理工大学 Be suitable for multi-functional running-in device of multiple model ball screw pair
CN109443762A (en) * 2018-12-24 2019-03-08 哈工大机器人（山东）智能装备研究院 A kind of ball screw assembly, malfunction monitoring and Lifetime Forecasting Test device
CN110027723A (en) * 2019-03-26 2019-07-19 沈阳飞研航空设备有限公司 Undercarriage flexible intelligent installation system elevating mechanism
CN110346153A (en) * 2019-06-27 2019-10-18 宁波培源股份有限公司 A kind of piston rod rotary torsion fatigue tester
CN110346153B (en) * 2019-06-27 2023-11-17 宁波培源股份有限公司 Piston rod rotating torsion fatigue testing machine
CN110587322A (en) * 2019-09-25 2019-12-20 长春荣德光学有限公司 Linear guide rail with coding function
CN110907172B (en) * 2019-11-19 2021-09-28 南京理工大学 Device and method for measuring walking precision of rolling linear guide rail pair
CN110907172A (en) * 2019-11-19 2020-03-24 南京理工大学 Device and method for measuring walking precision of rolling linear guide rail pair
CN112781869A (en) * 2020-12-29 2021-05-11 于同仁 Automobile engine flywheel gear detection equipment
KR102329882B1 (en) 2021-07-20 2021-11-22 (주)케이엠이엔지 Load load inspection system for ball screw test
CN114030638A (en) * 2021-12-17 2022-02-11 江西洪都航空工业集团有限责任公司 Multi-degree-of-freedom tool for auxiliary mounting equipment of main undercarriage of airplane
CN114030638B (en) * 2021-12-17 2023-08-25 江西洪都航空工业集团有限责任公司 Multi-degree-of-freedom tool for auxiliary installation equipment of main landing gear of airplane
KR102507486B1 (en) 2022-08-16 2023-03-08 (주)한국항공기술 Apparatus for removing the shaft pin from the ball screw of the aircraft landing gear
KR102462257B1 (en) 2022-09-07 2022-11-03 (주)한국항공기술 Tool for disassembling or assembling bumper stopper assembly of the aircraft landing gear
CN116104920A (en) * 2023-02-07 2023-05-12 江苏品德机电科技有限公司 Ball screw with simple disassembly and assembly and disassembly method thereof
CN116104920B (en) * 2023-02-07 2024-04-09 江苏品德机电科技有限公司 Ball screw with simple disassembly and assembly and disassembly method thereof
CN117288461A (en) * 2023-09-20 2023-12-26 南京工艺装备制造有限公司 Measuring device for friction moment of planetary roller screw pair
CN117288461B (en) * 2023-09-20 2024-03-22 南京工艺装备制造股份有限公司 Measuring device for friction moment of planetary roller screw pair

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