CN215786240U

CN215786240U - Assembling device for fixed-gap swash plate assembly

Info

Publication number: CN215786240U
Application number: CN202121410929.3U
Authority: CN
Inventors: 蔡金典; 王栋选; 田延举; 陈经跃
Original assignee: Xian Flight Automatic Control Research Institute of AVIC
Current assignee: Xian Flight Automatic Control Research Institute of AVIC
Priority date: 2021-06-23
Filing date: 2021-06-23
Publication date: 2022-02-11
Anticipated expiration: 2031-06-23

Abstract

The utility model discloses an assembling device of a fixed-gap swash plate assembly, which comprises a supporting seat; the surface of the supporting seat is provided with an assembling groove matched with the external shape of the swash plate assembly, the side surface of the assembling groove is provided with a dismounting groove, and when the swash plate assembly is arranged in the assembling groove, the surface of a swash plate in the swash plate assembly is parallel to the horizontal plane; a mandril groove is formed in the lower part of the assembling groove and used for placing a lower mandril; the top of the lower ejector rod is used for connecting a shaft sleeve in the swash plate assembly, and the upper ejector rod is detachably arranged on the upper part of the shaft sleeve; the assembling device also comprises a punching and riveting device for punching and riveting. The utility model can realize the quick locking of the swash plate assembly, avoid the assembly of unqualified assemblies on products such as a hydraulic pump, a motor and the like, improve the one-time assembly and adjustment qualification rate, stabilize the product quality and greatly improve the product performance and reliability.

Description

Assembling device for fixed-gap swash plate assembly

Technical Field

The utility model relates to an assembly technology, in particular to an assembly device of a fixed-gap swash plate assembly.

Background

The high-speed hydraulic motor is a core product of rotary driving devices such as airplane cabin doors, slats and the like, and the return mode of a plunger comprises a fixed-gap return mode, a central spring return mode and other structural forms. The return plate of the fixed-gap return structure is connected to the swash plate through bolts, a certain working gap is required to be formed between the upper surface of the piston shoe and the working surface of the swash plate, the return plate is dragged by the central spring return structure through spring force, and the central spring return structure and the return plate can enable the piston shoe in the oil suction stroke to be pulled out under the action of the return plate to finish oil suction.

Before the swash plate assembly is assembled to the motor, the assembly needs to be reliably locked and riveted, otherwise, under the working condition of high-speed vibration, once the assembly is loosened or falls off, a main shaft is sheared off, and each friction pair is abnormally abraded, so that the reliability and the service life of the hydraulic motor and even the whole driving device are seriously influenced.

Disclosure of Invention

The utility model aims to provide an assembling device of a fixed-gap swash plate assembly, which is used for locking the swash plate assembly and ensuring the working stability of the swash plate assembly.

In order to realize the task, the utility model adopts the following technical scheme:

an assembling device of a fixed-gap swash plate assembly comprises a supporting seat;

the surface of the supporting seat is provided with an assembling groove matched with the external shape of the swash plate assembly, the side surface of the assembling groove is provided with a dismounting groove, and when the swash plate assembly is arranged in the assembling groove, the surface of a swash plate in the swash plate assembly is parallel to the horizontal plane;

a mandril groove is formed in the lower part of the assembling groove and used for placing a lower mandril; the top of the lower ejector rod is used for connecting a shaft sleeve in the swash plate assembly, and the upper ejector rod is detachably arranged on the upper part of the shaft sleeve;

the assembling device also comprises a punching and riveting device for punching and riveting.

Furthermore, a fixing hole is formed in the assembling groove and used for fastening the swash plate assembly when the swash plate assembly is positioned in the assembling groove; the fixing hole is positioned at the joint of the assembling groove and the disassembling and assembling groove.

Furthermore, pin holes are distributed in the circumferential direction of the lower end of the shaft sleeve, a return disc in the swash plate assembly is fixed on the shaft sleeve through a locking nut, and the locking nut is also distributed with the pin holes;

the upper ejector rod and the lower ejector rod are respectively detachably connected with the locking nut and the shaft sleeve through the positioning pin.

Furthermore, a torque wrench is arranged on the upper ejector rod and used for fastening the locking nut after the upper ejector rod and the lower ejector rod are connected with the locking nut and the shaft sleeve;

the cross section of the lower part of the lower ejector rod is a non-circular surface.

Furthermore, the upper part of the upper ejector rod is of an outer hexagonal structure, the lower part of the upper ejector rod is provided with a joint matched with the locking nut in size, and pin holes are distributed on the circumference of the joint; the upper end of the lower ejector rod is provided with a joint matched with the diameter of the lower end of the shaft sleeve, pin holes are distributed on the circumference of the joint, and the cross section of the lower end of the lower ejector rod is square or hexagonal.

Furthermore, the punching and riveting device comprises a punch rod, wherein an outward protruding punch head is processed at the end part of the punch rod and is used for punching into an inner hole of the shaft sleeve, so that the shaft sleeve is expanded outwards to lock the locking nut.

Furthermore, the swash plate assembly comprises a swash plate, an adjusting gasket, a shaft sleeve, a return disc and a locking nut, wherein the shaft sleeve is assembled in a stepped hole on the swash plate, the upper end of the shaft sleeve penetrates out of the surface of the swash plate, and the adjusting gasket is arranged between the lower end of the shaft sleeve and the lower part of the stepped hole;

the return disc is sleeved on a convex shoulder outside the shaft sleeve, and the locking nut is assembled on the shaft sleeve and used for fixing the return disc.

Compared with the prior art, the utility model has the following technical characteristics:

the utility model can realize the quick locking of the swash plate assembly, avoid the assembly of unqualified assemblies on products such as a hydraulic pump, a motor and the like, improve the one-time assembly and adjustment qualification rate, stabilize the product quality and greatly improve the product performance and reliability.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of a swash plate assembly;

FIG. 3 is a schematic view of the present invention during punch riveting;

the reference numbers in the figures illustrate: the device comprises a swash plate 1, an adjusting gasket 2, a shaft sleeve 3, a return stroke disc 4, a locking nut 5, a supporting seat 6, a lower ejector rod 7, a positioning pin 8, a positioning pin 9, an upper ejector rod 10, a punching and riveting device 11, an assembly groove 12, an assembly groove 13, an ejector rod groove 14 and a fixing hole 15.

Detailed Description

Referring to fig. 1 to 3, the present invention provides an assembling device of a fixed-gap swash plate assembly, comprising a supporting seat 6; an assembling groove 12 matched with the external shape of the swash plate assembly is formed in the surface of the supporting seat 6, an assembling groove 13 is formed in the side face of the assembling groove 12, and when the swash plate assembly is placed in the assembling groove 12, the surface of a swash plate 1 in the swash plate assembly is parallel to the horizontal plane; a mandril groove 14 is arranged at the lower part of the assembly groove 12 and used for placing the lower mandril 7; the top of the lower ejector rod 7 is used for connecting a shaft sleeve 3 in the swash plate assembly, and an upper ejector rod 10 is detachably arranged on the upper part of the shaft sleeve 3; the assembly device further comprises a punch riveting device 11 for punch riveting.

The bottom surface and the upper surface of a supporting seat 6 are planes, a dismounting groove 13 is communicated with the side surface of an assembling groove 12, and the assembling groove 12 is an inclined groove, so that the surface of a swash plate 1 is parallel to the horizontal plane after the swash plate assembly is assembled; the dismounting groove 13 is used for providing space for dismounting the swash plate assembly, and is convenient for fixing or dismounting the swash plate assembly; the lower ejector rod 7 at the lower part plays a role in fixing when the locking nut 5 is preliminarily fastened, so that the swash plate assembly is prevented from rotating; the upper ejector rod 10 on the upper part is used for being matched with a screwing device to fasten the locking nut 5 according to the torque requirement; after the locking nut 5 is preliminarily fastened, the upper ejector rod 10 is replaced by the punching and riveting device 11, and the punching, riveting and locking of the locking nut 5 are carried out.

The swash plate component comprises a swash plate 1, an adjusting pad 2, a shaft sleeve 3, a return disc 4 and a locking nut 5, wherein the shaft sleeve 3 is assembled in a stepped hole on the swash plate 1, the upper end of the shaft sleeve 3 penetrates out of the surface of the swash plate 1, and the adjusting pad 2 is arranged between the lower end of the shaft sleeve 3 and the lower part of the stepped hole; the return disc 4 is sleeved on a convex shoulder outside the shaft sleeve 3, and the locking nut 5 is assembled on the shaft sleeve 3 and used for fixing the return disc 4.

In the example provided in fig. 1, a fixing hole 15 is opened in the fitting groove 12 for fastening the swash plate assembly when it is located in the fitting groove 12; the fixing hole 15 is positioned at the joint of the assembling groove 12 and the disassembling and assembling groove 13; referring to fig. 1, the bottom edge of the swash plate 1 is provided with a fixing lug, and when the swash plate assembly is mounted in the mounting groove 12, a hole of the fixing lug is opposite to the fixing hole 15 to fasten the swash plate assembly.

In one embodiment of the utility model, pin holes are distributed in the circumferential direction of the lower end of the shaft sleeve 3, the return plate 4 in the swash plate assembly is fixed on the shaft sleeve 3 through a locking nut 5, and the locking nut 5 is also distributed with the pin holes; the upper ejector rod 10 and the lower ejector rod 7 are respectively detachably connected with the locking nut 5 and the shaft sleeve 3 through

positioning pins

9 and 8; the positioning and connection of the upper ejector rod 10, the lower ejector rod 7 and the swash plate component are realized through the

positioning pins

9 and 8; after the positioning connection, the following preliminary fixing can be performed.

Specifically, the upper ejector rod 10 is provided with a torque wrench for fastening the locking nut 5 after the upper ejector rod 10 and the lower ejector rod 7 are connected with the locking nut 5 and the shaft sleeve 3; the cross section of the lower part of the lower ejector rod 7 is a non-circular surface. This process is a preliminary fixing in which the lower carrier rod 7 is used to define that the entire assembly does not rotate when torque is applied to the upper carrier rod 10; and the upper ejector rod 10 drives the locking nut 5 to rotate and screw through the positioning pin 9, so that the installation position of the return stroke disc 4 is fixed.

Optionally, the upper part of the upper ejector rod 10 is of an outer hexagonal structure and is used for being matched with a torque wrench; the lower part is a joint matched with the locking nut 5 in size, referring to fig. 1, the joint is in a frustum structure with a large upper part and a small lower part, and pin holes are distributed on the circumference of the joint; the upper end of the lower ejector rod 7 is provided with a joint matched with the diameter of the lower end of the shaft sleeve 3, pin holes are distributed on the circumference of the joint, the cross section of the lower end of the lower ejector rod 7 is square or hexagonal, and correspondingly, the cross section of the ejector rod groove 14 is also square or hexagonal, so that the lower ejector rod 7 is inserted into the lower ejector rod groove to limit the position in the circumferential direction.

Referring to fig. 3, in an alternative embodiment of the present invention, the rivet punching device 11 includes a punch rod, and an end of the punch rod is provided with a convex punch head, and the punch head is used for punching into an inner hole of the shaft sleeve 3 to expand the shaft sleeve 3 to lock the lock nut 5; the punching and riveting process is a secondary fastening process, and after the punch is punched, the material of the shaft sleeve 3 can be expanded outwards to damage threads, so that the purpose of locking is achieved.

During assembly, the adjusting pad 2 is firstly placed on the step surface of the shaft sleeve 3, then the shaft sleeve 3 penetrates through the central hole of the inclined surface of the swash plate 1 from the bottom of the inclined plate 1, then the return disc 4 is placed on the step surface of the shaft sleeve 3, and the locking nut 5 is connected with the shaft sleeve 3 through threads to fix the shaft sleeve. The slipper is arranged between the return disc 4 and the swash plate 1 and is tightly attached to the return disc 4, so that the clearance value between the return disc 4 and the swash plate 1 can be adjusted by repairing and adjusting the thickness of the cushion disc 2, and the clearance between the slipper and the swash plate 1 is ensured to meet the design requirement. After which final assembly and lock riveting of the whole assembly is started.

The lower ejector rod 7 is placed in the supporting seat 6, then the swash plate assembly is placed in the supporting seat 6, the swash plate 1 is made to be arranged and fixed, then the upper ejector rod 10 and the

positioning pins

9 and 8 of the lower ejector rod 7 are tightly clamped in pin holes which are uniformly distributed in the circumferential direction of the locking nut 5 and the shaft sleeve 3, and the return plate 4 is locked on the shaft sleeve 3 under the combined action; the installation moment of the return disc 4 can not be achieved only through the locking nut 5, so that after the return disc is fixed through the positioning pin 9, the upper ejector rod 10 is rotated through a moment wrench, a larger moment is provided, and the return disc 4 is fixed.

After locking, the upper ejector rod 10 and the positioning pin 9 on the upper ejector rod are removed, the upper ejector rod 10 is replaced by a punch for punching and riveting, so that the material of the shaft sleeve 3 expands outwards to damage threads, and the purpose of locking is achieved.

The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equally replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application, and are intended to be included within the scope of the present application.

Claims

1. The assembling device of the fixed-gap swash plate component is characterized by comprising a supporting seat (6);

an assembling groove (12) matched with the external shape of the swash plate assembly is formed in the surface of the supporting seat (6), a disassembling groove (13) is formed in the side face of the assembling groove (12), and when the swash plate assembly is placed in the assembling groove (12), the surface of a swash plate (1) in the swash plate assembly is parallel to the horizontal plane;

a mandril groove (14) is formed in the lower part of the assembling groove (12) and used for placing a lower mandril (7); the top of the lower ejector rod (7) is used for connecting a shaft sleeve (3) in the swash plate assembly, and an upper ejector rod (10) is detachably mounted on the upper part of the shaft sleeve (3);

the assembly device also comprises a punching and riveting device (11) for punching and riveting.

2. The fitting device of the constant gap swash plate assembly according to claim 1, wherein the fitting groove (12) is opened with a fixing hole (15) for fastening the swash plate assembly when it is located in the fitting groove (12); the fixing hole (15) is positioned at the joint of the assembling groove (12) and the disassembling and assembling groove (13).

3. The assembling device of the constant-gap swash plate assembly according to claim 1, wherein pin holes are distributed in the circumferential direction of the lower end of the shaft sleeve (3), the return plate (4) in the swash plate assembly is fixed on the shaft sleeve (3) through a locking nut (5), and the pin holes are also distributed on the locking nut (5);

the upper ejector rod (10) and the lower ejector rod (7) are detachably connected with the locking nut (5) and the shaft sleeve (3) through positioning pins (9, 8) respectively.

4. The assembling device of the constant-gap swash plate assembly according to claim 1, wherein a torque wrench is arranged on the upper ejector rod (10) and is used for fastening the locking nut (5) after the upper ejector rod (10) and the lower ejector rod (7) are connected with the locking nut (5) and the shaft sleeve (3);

the cross section of the lower part of the lower ejector rod (7) is a non-circular surface.

5. The assembling device of the constant-gap swash plate assembly according to claim 3, characterized in that the upper part of the upper ejector rod (10) is of an outer hexagonal structure, the lower part of the upper ejector rod is a joint matched with the size of the locking nut (5), and pin holes are distributed on the circumference of the joint; the upper end of the lower ejector rod (7) is provided with a joint matched with the diameter of the lower end of the shaft sleeve (3), pin holes are distributed on the circumference of the joint, and the cross section of the lower end of the lower ejector rod (7) is square or hexagonal.

6. The assembling device of the constant-gap swash plate assembly according to claim 3, characterized in that the riveting device (11) comprises a punch rod, and a convex punch head is processed at the end part of the punch rod and is used for punching into the inner hole of the shaft sleeve (3) so as to expand the shaft sleeve (3) to lock the locking nut (5).

7. The assembling device of the constant-gap swash plate assembly according to claim 1, wherein the swash plate assembly comprises a swash plate (1), an adjusting pad (2), a shaft sleeve (3), a return disc (4) and a locking nut (5), wherein the shaft sleeve (3) is assembled in a stepped hole on the swash plate (1), the upper end of the shaft sleeve (3) penetrates through the surface of the swash plate (1), and the adjusting pad (2) is arranged between the lower end of the shaft sleeve (3) and the lower part of the stepped hole;

the return disc (4) is sleeved on a convex shoulder outside the shaft sleeve (3), and the locking nut (5) is assembled on the shaft sleeve (3) and used for fixing the return disc (4).