Mounting tool for sleeving sealing shaft into cylinder in buffer strut

Abstract

According to the installation tool for sleeving the sealing shaft into the cylinder in the buffer supporting column, a supporting top block used for being attached to the top face of the buffer supporting column is arranged at one end of a base, a clamping block used for containing the buffer supporting column is arranged in the middle of the base, and a connector base is arranged at the other end of the supporting base; a supporting ring used for supporting a screw is arranged at one end of the connector base, and T-shaped grooves used for containing screw connectors are symmetrically formed in the two sides of the interior of the connector base. The screw rod passes through the support ring and the roller bearing, is matched with the screw rod joint and extends out of the screw rod joint; the fastening nut is arranged on the screw rod outside the support ring; a hinge type supporting sleeve used for being attached to the outer circle of the piston rod is installed on the screw connector through a tightening screw, and the hinge type supporting sleeve is directly matched with the outer circle of the piston rod by avoiding all non-rotation characteristics through a precise hinge structure. And the screw joint converts the rotating force of the screw into the linear thrust of the screw joint through thread screwing and a precise T-shaped groove structure, so that the efficient mounting of the sealing shaft sleeve into the cylinder is finally realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of buffer mounting tool, in particular to a sealing sleeve into cylinder mounting tool in buffer strut. BACKGROUND

[0002] The buffer strut is the core component of various types of aircraft landing gear. In order to meet the performance requirements of aircraft landing gear retraction, buffering and taxiing, most buffer struts are structured with hydraulic cylinders as the core and various joint features are displayed according to the interface requirements. Therefore, the key parts in the buffer strut, such as the piston rod and the outer cylinder, have both high-precision rotary features to achieve sealing effect and external joint features to cooperate with other interfaces, which easily leads to interference from external joint features in the key process of buffer strut assembly, i.e. the sealing sleeve into cylinder process, thereby causing limited operation space for workers, difficult assembly work and low work efficiency.

[0003] The existing installation process is that when the sealing sleeve into cylinder operation is performed, the rubber hammer is used to knock the edge of the sealing sleeve obliquely around the circumference of the sealing sleeve to push the sealing sleeve into the cylinder slowly by using the instantaneous impact force when the edge of the sealing sleeve is knocked. If the rubber hammer cannot avoid the interference features, a soft metal rod (aluminum rod, copper rod, etc.) is used as an auxiliary tool to knock the sealing sleeve into the outer cylinder in a way similar to hole drilling. This method is not only inefficient, but also has the risk of damaging the parts. SUMMARY

[0004] The technical problem solved by the present application is to provide a sealing sleeve into cylinder mounting tool in buffer strut to solve the problems in the background.

[0005] The technical problem solved by the present application is solved by the following technical solution: A sealing sleeve into cylinder mounting tool in buffer strut, comprising a support top block, a base, a clamping block, a fastening nut, a roller bearing, a screw rod, a hinge type support sleeve, a tightening screw, a screw rod joint, a joint base and a buffer strut comprising an outer cylinder, a sealing sleeve and a piston rod, wherein one end of the base is provided with a support top block for abutting with the top surface of the buffer strut, the middle part of the base is provided with a clamping block for placing the outer circle of the buffer strut, and the other end of the support base is provided with a joint base; one end of the joint base is provided with a support ring for supporting the screw rod, and the inside of the joint base is provided with a T-shaped groove on both sides for placing the screw rod joint, so as to ensure that the screw rod joint can only move in a straight line under the drive of the screw rod; the screw rod is installed in cooperation with the screw rod joint after passing through the support ring and the roller bearing and extends out of the screw rod joint, and the fastening nut is installed on the screw rod outside the support ring for fastening the screw rod; the hinge type support sleeve for abutting with the outer circle of the piston rod is installed on the screw rod joint by the tightening screw.

[0006] In the present application, the clamping block is a V-shaped block.

[0007] In the present application, the V-shaped block is provided with a pressing plate for clamping the buffer strut.

[0008] In the present application, the hinge type support sleeve comprises an upper hinge sleeve, a shaft pin, a tightening screw, a bolt, a nut and a lower hinge sleeve, wherein two upper lugs are arranged on one side of the upper hinge sleeve at an interval, and the interval distance is the length of one upper lug; a bolt hole for inserting the bolt is arranged on the other side of the upper hinge sleeve; three lower lugs are arranged on one side of the lower hinge sleeve at an interval, and the interval distance is the length of one lower lug; a bolt hole for inserting the bolt is arranged on the other side of the lower hinge sleeve; the lengths of the upper lugs and the lower lugs are equal; the shaft pin is inserted into the integrated upper lugs and lower lugs, and ensures that the upper hinge sleeve and the lower hinge sleeve can keep high-precision opening and closing movement after the shaft pin is inserted; and the nut is fastened on the bolt to fix the upper hinge sleeve and the lower hinge sleeve into one body.

[0009] In the present application, plastic protective sheets are respectively pasted in the upper hinge sleeve and the lower hinge sleeve.

[0010] In the present application, the upper hinge sleeve and the lower hinge sleeve are semicircular structures, and form an inner hole for fitting with the outer circle of the piston rod.

[0011] In the present application, a boss for embedding the hinge type support sleeve is arranged on the upper part of the screw joint, a through hole for the screw to pass through is arranged in the middle of the screw joint, and grooves for embedding the screw joint in the T-shaped slot are arranged on both sides of the screw joint.

[0012] In the present application, a strip-shaped slot for embedding the boss is arranged at the bottom of the lower hinge sleeve of the hinge type support sleeve, different specifications of the hinge type support sleeve can be customized according to the size of the buffer strut to be installed, and the boss is used for quick replacement.

[0013] In the present application, a hinge base is arranged on the lower hinge sleeve, a waist-shaped hole for installing the tightening screw is arranged on the hinge base, the axial position of the hinge type support sleeve and the screw joint can be adjusted within a certain range to cope with the buffer struts with similar structure sizes.

[0014] In the present application, the hinge type structure of the hinge type support sleeve is used to avoid all non-rotary features and directly cooperate with the outer circle of the piston rod, and the T-shaped slot structure is used to convert the rotary force of the screw into the linear thrust of the hinge type support sleeve, so as to realize the efficient installation of the sealing sleeve into the cylinder.

[0015] Beneficial effects: In the present application, the hinge type support sleeve avoids all non-rotary features and directly cooperates with the outer circle of the piston rod through the precise hinge structure, and the screw joint converts the rotary force of the screw into the linear thrust of the screw joint through the thread screwing and the precise T-shaped slot structure, so as to realize the efficient installation of the sealing sleeve into the cylinder, which is more time-saving and labor-saving, and significantly improves the work efficiency. Attached Figure Description

[0016] Figure 1 This is an exploded view of a preferred embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram of a preferred embodiment of the present invention.

[0018] Figure 3 This is a schematic diagram of the buffer support structure in a preferred embodiment of the present invention.

[0019] Figure 4 This is an exploded view of the hinged support sleeve in a preferred embodiment of the present invention.

[0020] Figure 5 This is a schematic diagram of the screw connector and connector base mating state in a preferred embodiment of the present invention.

[0021] Figure 6 for Figure 5 Sectional view along the AA direction.

[0022] Figures 7-9 This is a schematic diagram illustrating the steps of using the sealing bushing insertion tool in a preferred embodiment of the present invention. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below with reference to specific illustrations.

[0024] See Figures 1-6 A tooling for installing a sealing bushing in a buffer support includes a support top block 1, a base 2, a V-block 3, a fastening nut 4, a roller bearing 5, a screw 6, a hinged support sleeve 7, a tightening screw 8, a screw connector 9, a connector base 10, and a buffer support 11 including an outer cylinder 111, a sealing bushing 112, and a piston rod 113. One end of the base 2 is provided with a support top block 1 for contacting the top surface of the buffer support 11, the middle of the base 2 is provided with a V-block 3 for placing the outer circumference of the buffer support 11, and the other end of the support base 2 is provided with a connector. The base 10 has a support ring at one end for supporting the screw 6. T-slots for placing the screw connector 9 are symmetrically arranged on both sides inside the base 10 to ensure that the screw connector 9 can only move in a straight line under the drive of the screw 6. The screw 6 is installed and extends out of the screw connector 9 after passing through the support ring and the roller bearing 5. The fastening nut 4 is installed on the screw 6 located outside the support ring to fasten the screw 6. A hinged support sleeve 7 for fitting with the outer circle of the piston rod 113 is installed on the screw connector 9 by tightening screws 8.

[0025] In this embodiment, the V-shaped block 3 is provided with a pressure plate for clamping the buffer support column 11.

[0026] In this embodiment, the hinge support sleeve 7 includes an upper hinge sleeve 71 (the shaded area of ​​the grid represents an attached plastic protective sheet), a shaft pin 72, a tightening screw 8, a bolt 73, a nut 74, and a lower hinge sleeve 75 (the shaded area of ​​the grid represents an attached plastic protective sheet). The upper hinge sleeve 71 has two upper lugs 76 spaced apart on one side, with a spacing equal to the length of one upper lug 76. The other side of the upper hinge sleeve 71 has bolt holes for inserting the bolts 73. The lower hinge sleeve 75 has... There are three lower ear pieces 76, with a spacing equal to the length of one lower ear piece 76. The other side of the lower hinge sleeve 75 is provided with a bolt hole for the insertion of a bolt 73. The upper ear piece 76 and the lower ear piece 76 are of equal length. The pin 72 is inserted into the upper ear piece 76 and the lower ear piece 76 that are engaged together, ensuring that the upper hinge sleeve 71 and the lower hinge sleeve 75 can maintain high-precision opening and closing movement after the pin 72 is inserted. The nut 74 is fastened to the bolt 73 to fix the upper hinge sleeve 71 and the lower hinge sleeve 75 together.

[0027] In this embodiment, the upper hinge sleeve 71 and the lower hinge sleeve 75 are semi-circular structures, which together form an inner hole for fitting with the outer circle of the piston rod 113.

[0028] In this embodiment, the upper part of the screw connector 9 is provided with a boss for engaging with the hinged support sleeve 7, the middle part of the screw connector 9 is provided with a through hole for the screw 6 to pass through, and the two sides of the screw connector 9 are provided with grooves for nesting the screw connector 9 in the T-slot.

[0029] In this embodiment, a hinge base is provided on the lower hinge sleeve 75, and an oblong hole is provided on the hinge base for installing the tightening screw 8. The axial position of the hinge support sleeve 7 and the screw joint 9 can be adjusted within a certain range to accommodate the buffer support column 11 with similar structural dimensions.

[0030] In this embodiment, the bottom of the lower hinge sleeve 75 of the hinge support sleeve 7 is provided with a strip groove that fits into the boss. Different specifications of hinge support sleeve 7 can be customized according to the different sizes of the buffer support column 11 to be installed, and quick replacement can be achieved by using the boss.

[0031] In this embodiment, the working principle of the sealing bushing insertion tool is as follows: like Figure 5 , 6 As shown, the ear structure of the hinge support sleeve 7 ensures the opening and closing accuracy of the upper hinge sleeve 71 and the lower hinge sleeve 75, while ensuring that the end face of the hinge support sleeve 7 can stably fit the end face of the sealing bushing 112 during operation, and the plastic protective sheet glued to the inner side of the upper hinge sleeve 71 and the lower hinge sleeve 75 can effectively prevent scratches on the machine body. The screw connector 9 and the base 10 are precisely fitted with a T-slot to ensure that the screw connector 9 can only move in a straight line under the drive of the screw 6. The hinge support sleeve 7 and the screw connector 9, as well as the screw connector 9 and the connector base 10, are precisely fitted with slots to further ensure the consistency between the movement direction of the hinge support sleeve 7 and the axis of the sealing sleeve 112 when the sealing sleeve 112 is installed in the cylinder. This tooling utilizes the hinge structure of the hinge support sleeve 7 to bypass all non-rotational features and directly mate with the outer circle of the piston rod 113. Then, it uses the T-groove structure to convert the rotational force of the screw 6 into the linear thrust of the hinge support sleeve 7, thereby achieving efficient insertion and installation of the sealing bushing 112.

[0032] In this embodiment, the method of using the sealing bushing insertion tool is as follows: Figures 7-9 As shown: Assembly before entering the cylinder: install the nut 114, sealing bushing 112 and other sleeve parts 115 on the piston rod 113 in sequence, and then insert the piston rod 113 into the outer cylinder 111 to achieve the state of being ready to enter the cylinder. At this time, the sealing bushing 112 and the nut are in a free sliding state on the piston rod 113, and the assembly space of the hinge support sleeve 7 is reserved between the two. Open the hinge support sleeve 7 and the V-shaped block 3 on the base 2, and install the buffer support column 11 on the tooling. The top surface of the buffer support column 11 is in contact with the support top block 1, and the middle outer circle of the buffer support column 11 is placed on the V-shaped block 3. The key point is that the lower hinge sleeve 75 of the hinge support sleeve 7 is in contact with the outer circle of the piston rod 113. Then close the hinge sleeve 71 and tighten it with the tightening screw 8, and fasten the pressure plate on the V-shaped block 3. After the buffer support 11 is fixed, start to rotate the screw 6 with a socket wrench to drive the hinge support sleeve 7 to push the sealing bushing 112 into the outer cylinder 111. When the sealing bushing 112 is in place, you can feel a clear reverse force when rotating the screw 6. Finally, loosen the pressure plate on the V-block 3 and insert the nut to complete the installation of the sleeve.

[0033] Precautions: Since the plastic protective sheets are glued to the inside of both the upper hinge sleeve 71 and the lower hinge sleeve 75, the overall structure has a certain degree of flexibility. Therefore, the inner hole formed by the upper hinge sleeve 71 and the lower hinge sleeve 75 does not need to be strictly and precisely matched with the outer circle of the piston rod 113. A small gap or a certain degree of forced assembly is acceptable. Since the main feed of the sealing bushing 112 comes from the driving force provided by the rotation of the screw 6, the main stress point is the support top block 1. The role of the V-block 3 is more to prevent the driving force from being decomposed obliquely due to the error of the buffer support 11 parts, which would cause the parts to move. Appropriate tightening is sufficient, and there is no need to deliberately tighten it. While manually rotating screw 6, workers can also assess whether there is jamming or deadlock based on the force feedback from screw 6, thus avoiding forced assembly. After the installation of a buffer support 11 is completed, the screw 6 is reset without the need for driving force or high position requirements. It can be reset with the help of a hand drill or pneumatic tools.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A mounting tool for sealing the bushing into the cylinder of a buffer strut, comprising a support top block, a base, a clamping block, a fastening nut, a roller bearing, a screw, a hinge support sleeve, a tightening screw, a screw joint, a joint base, and a buffer strut comprising an outer cylinder, a sealing bushing, and a piston rod, characterized in that The base is provided with a support top block at one end for abutting with the top surface of the buffer strut, a clamping block in the middle for placing the outer circle of the buffer strut, and a joint base at the other end; the joint base is provided with a support ring at one end for supporting the screw rod, and T-shaped grooves are symmetrically arranged inside the joint base for placing the screw rod joint, so as to ensure that the screw rod joint can only move in a straight line under the driving of the screw rod; the screw rod is installed in cooperation with the screw rod joint after passing through the support ring and the roller bearing and extends out of the screw rod joint, and the fastening nut is installed on the screw rod outside the support ring; the hinge type support sleeve for abutting with the outer circle of the piston rod is installed on the screw rod joint by means of the tightening screw.

2. The sealing sleeve installation tool for a cushioning strut according to claim 1, wherein The clamping block is a V-shaped block.

3. The sealing sleeve installation tool for a cushioning strut according to claim 2, wherein The V-shaped block is provided with a pressing plate for clamping the buffer strut.

4. The tooling apparatus of claim 1, wherein: The hinge type support sleeve comprises an upper hinge sleeve, an axle pin, a tightening screw, a bolt, a nut and a lower hinge sleeve, wherein two upper lugs are arranged at intervals on one side of the upper hinge sleeve, and the interval distance is the length of one upper lug, and a bolt hole for inserting the bolt is arranged on the other side of the upper hinge sleeve; three lower lugs are arranged at intervals on one side of the lower hinge sleeve, and the interval distance is the length of one lower lug, and a bolt hole for inserting the bolt is arranged on the other side of the lower hinge sleeve, the lengths of the upper lugs and the lower lugs are equal, the axle pin is inserted into the integrated upper lugs and lower lugs, and the nut is fastened on the bolt to fix the upper hinge sleeve and the lower hinge sleeve into one body.

5. The sealing sleeve installation tool for a cushioning strut according to claim 4, wherein Plastic protective sheets are respectively pasted in the upper hinge sleeve and the lower hinge sleeve.

6. The sealing sleeve installation tool for a cushioning strut according to claim 4, wherein The upper hinge sleeve and the lower hinge sleeve are semicircular structures and form an inner hole for abutting with the outer circle of the piston rod.

7. The sealing sleeve installation tool for a cushioning strut according to claim 4, wherein A hinge base is arranged on the lower hinge sleeve, and a waist-shaped hole for installing the tightening screw is arranged on the hinge base.

8. The tool of claim 1 wherein: A boss for embedding the hinge type support sleeve is arranged on the upper part of the screw rod joint, a through hole for the screw rod to pass through is arranged in the middle of the screw rod joint, and grooves for embedding the screw rod joint in the T-shaped groove are arranged on both sides of the screw rod joint.

9. The tool of claim 8, wherein: A strip-shaped groove for embedding the boss is arranged at the bottom of the hinge type support sleeve.

10. The tooling apparatus of any one of claims 1 to 9, wherein the tooling apparatus is configured to install the seal sleeve into the tube of the cushion strut. The hinge type structure of the hinge type support sleeve is used to avoid all non-rotating features and directly cooperate with the outer circle of the piston rod, and the T-shaped groove structure is used to convert the rotating force of the screw rod into the linear thrust of the hinge type support sleeve, so as to realize the efficient installation of the sealing bush into the cylinder.

Images