CN217776799U

CN217776799U - Special clamp for hydraulic plunger pump of airplane

Info

Publication number: CN217776799U
Application number: CN202222049786.9U
Authority: CN
Inventors: 齐冬梅; 杨广双; 宋政璞; 韩学剑; 王海俊; 苑林
Original assignee: Dalian Changfeng Industrial Corp
Current assignee: Dalian Changfeng Industrial Corp
Priority date: 2022-08-04
Filing date: 2022-08-04
Publication date: 2022-11-11
Anticipated expiration: 2032-08-04

Abstract

The utility model provides an aircraft hydraulic pressure plunger pump special fixture belongs to aviation equipment technical field. The clamp comprises a support frame, a rotating shaft nut, a rotating shaft, a shaft sleeve, a split pin, a spring, a positioning pin, a rotating shaft handle and a clamp body. The circumference of the rotating shaft in the utility model is evenly provided with a plurality of rotating shaft grooves, so that the clamp has a plurality of fixed positions, the multi-position aircraft maintenance operation can be carried out, and the repair and assembly requirements of the hydraulic plunger pump of the aircraft are met; anchor clamps's simple structure, convenient operation, the security is high.

Description

Special clamp for hydraulic plunger pump of airplane

Technical Field

The utility model belongs to the technical field of the aviation is equipped, a aircraft hydraulic pressure plunger pump special fixture is related to.

Background

The hydraulic plunger pump of the airplane is a pressure supply source of a first system and a second system of the airplane, and is an important part which must be repaired, assembled and tested in the process of airplane overhaul. The plunger pump shell is irregular in shape and complex in structure, so that the gravity center and the end face capable of being clamped of the plunger pump must be found, and firm clamping is guaranteed without damaging the shell. Because the pump needs to be replaced by more than 40 parts, the performance detection test 20 has more items, and the workload of a single machine is larger; meanwhile, the pump has a large self weight of 18.5kg. Due to the maintenance requirements of the factory, the annual repair amount of the airplane is about 30 frames, and the test requirement is high. The operation is inconvenient without a special clamp, and potential safety hazards also exist. Therefore, a special clamp for the hydraulic plunger pump of the airplane is urgently needed to meet the requirements of repairing and assembling the plunger pump, and meanwhile, the clamp is required to be capable of driving the pump to rotate to meet the requirements of assembling parts at different positions; the fixture also needs to ensure the strength of the fixture, and damage to the pump caused by deformation of the fixture is prevented.

In view of this, the utility model provides an aircraft hydraulic pressure plunger pump special fixture for aircraft hydraulic pressure plunger pump is repaired, the assembly demand, and this anchor clamps simple structure, convenient operation, the security is high.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem that exists among the prior art, the utility model provides an aircraft hydraulic pressure plunger pump special fixture for aircraft hydraulic pressure plunger pump is repaired, the assembly demand.

The technical scheme of the utility model is that:

the utility model provides an aircraft hydraulic pressure plunger pump special fixture, includes fixing nut 1, fixing bolt 2, support frame 3, pivot nut 4, pivot 5, axle sleeve 6, split pin 7, spring 8, locating pin 9, pivot handle 10 and the anchor clamps body 11.

The support frame 3 consists of a base and a hollow cylinder; the base is fixed on the working table surface through a fixing nut 1 and a fixing bolt 2, and the stability of the clamp is guaranteed; the center of the hollow cylinder is a supporting hole, and the center of the supporting hole is the rotation center of the rotating shaft 5.

The rotating shaft 5 is an integrated structure formed by sequentially connecting a connecting shaft, a turntable and a cuboid structure. A connecting shaft is arranged in a supporting hole of the supporting frame 3; in order to prevent the support hole from being abraded due to long-term rotation of the rotating shaft, the support hole is protected by a shaft sleeve 6 made of wear-resistant materials; the axle sleeve 6 is installed on the connecting axle of pivot 5, and 6 excircles of axle sleeve are interference fit with the supported hole, and 6 holes of axle sleeve are clearance fit with the connecting axle excircle of pivot 5, and pivot 5 can free rotation and the clearance is not big. The circumference terminal surface of 5 turntables of pivot is evenly opened along the circumferencial direction has 8 square pivot grooves for realize the pivot location with pivot handle 10 cooperation. The cuboid structure of the rotating shaft 5 is closely connected with the clamp body 11 through a fixing screw, so that the rotating shaft drives the clamp body to rotate.

A handle fixing groove is formed in the top of the hollow cylinder of the support frame 3, handle fixing holes are formed in two sides of the handle fixing groove, a spring groove is formed in the bottom of the handle fixing groove, and the spring 8 is installed in the spring groove. The rotating shaft handle 10 is arranged in the handle fixing groove and is connected with the handle fixing hole through the positioning pin 9; the rotating shaft handle 10 is rotated to enable the bulge at the end part of the rotating shaft handle 10 to be clamped into the square rotating shaft groove of the rotating shaft 5, so that the rotating shaft is positioned. When the rotating shaft handle 10 is pressed downwards, the cylinder at the lower end of the rotating shaft handle 10 is inserted into the spring 8, the bulge at the end part of the rotating shaft handle 10 is lifted to be separated from the rotating shaft groove, the rotating shaft 5 is rotated, and the position of the rotating shaft 5 is adjusted, so that the clamp body is driven to rotate; when the rotating shaft handle 10 is lifted, the bulge on the rotating shaft handle 10 is inserted into the rotating shaft groove, and the rotating shaft positioning is realized.

In order to prevent the rotating shaft from moving, a rotating shaft nut 4 is arranged at the connecting shaft end of the rotating shaft 5; in order to ensure that the rotating shaft 5 and the rotating shaft nut 4 are integrated, after the rotating shaft nut 4 is screwed tightly, a through hole is drilled from one end to the other end of the rotating shaft nut 4, and a cotter pin 7 is arranged in the through hole.

The clamp body 11 comprises a clamping ring 12, a connecting block 13, a fixing pin 14, a protective felt 15, a fixing screw 16, a clamp rotating rod 17, a rotating rod sleeve 18 and a handle 19. Wherein, the clamping ring 12 is composed of two semicircular structures, and the inner profile of the clamping ring 12 is in accordance with the outer profile of the position of the plunger pump which can be clamped by force; in order to prevent the surface of the plunger pump shell from being damaged by clamping, a protective felt 15 is stuck to the inner surface of the clamping ring. The clamping ring 12 and the rotating shaft 5 are firmly connected through a fixing screw 16. One ends of two semicircular structures of the clamping ring 12 are connected together through a connecting block 13 and a fixing pin 14, and the opening and closing of the clamp body can be realized; and a semicircular structure at the other end is connected with a clamp rotating rod 17 through a fixing pin, the clamp rotating rod 17 penetrates through the other semicircular structure to be connected with a rotating rod sleeve 18 through threads, a handle 19 is pressed into a through hole at the end part of the rotating rod sleeve 18, and the handle 19 is rotated so as to clamp the two semicircular structures of the clamping ring 12 and further clamp the hydraulic plunger pump.

The utility model has the advantages that:

1) The special plunger pump clamp is designed, so that the requirements of repairing and assembling the hydraulic plunger pump of the airplane are met. The clamp is simple in structure, convenient to operate and high in safety.

2) In order to prevent the support hole from being worn due to long-time rotation of the rotating shaft, the support hole is protected by the shaft sleeve made of special wear-resistant materials, and the excircle of the shaft sleeve and the support hole are in an interference state and are firmly combined; the inner hole of the shaft sleeve is in clearance fit with the excircle of the rotating shaft, and the rotating shaft can rotate freely and has small clearance.

3) The utility model relates to a special pivot, evenly open on the pivot circumference has 8 pivot grooves, consequently presss from both sides and has 8 fixed positions, can carry out multiposition aircraft maintenance operation.

Drawings

Fig. 1 is the overall structure diagram of the present invention.

Fig. 2 is a schematic structural view of the clamp body.

FIG. 3 is a schematic structural view of the supporting frame; wherein (a) is a front view and (b) is a side view.

FIG. 4 is a schematic structural view of the spindle; wherein (a) is a front view, (b) is a side view, and (c) is an A-direction view.

Fig. 5 is a schematic structural view of the handle of the spindle.

In the figure: 1, fixing a nut; 2, fixing the bolt; 3, supporting a frame; 4, a rotating shaft nut; 5, rotating a shaft; 6, shaft sleeve; 7 a cotter pin; 8, a spring; 9, positioning pins; 10 a rotating shaft handle; 11 a clamp body; 12 a clamping ring; 13, connecting blocks; 14 fixing pins; 15 protecting the felt; 16 a set screw; 17 a clamp rotating rod; 18 a swivel sleeve; 19 a handle.

Detailed Description

The following embodiments of the present invention will be further explained with reference to the accompanying drawings, but the present invention is not limited thereto.

As shown in fig. 1, the special clamp for the aircraft hydraulic plunger pump comprises a fixing nut 1, a fixing bolt 2, a support frame 3, a rotating shaft nut 4, a rotating shaft 5, a shaft sleeve 6, a split pin 7, a spring 8, a positioning pin 9, a rotating shaft handle 10 and a clamp body 11.

As shown in fig. 3, the supporting frame 3 is the center of the fixture and is composed of a base and a hollow cylinder; the base of the support frame 3 is fixed on the working table surface through a fixing nut 1 and a fixing bolt 2; the center of the hollow cylinder of the support frame 3 is a support hole, and the center of the support hole is the rotation center of the rotating shaft 5.

As shown in fig. 4, the rotating shaft 5 is an integrated structure formed by sequentially connecting a connecting shaft, a rotating disc and a rectangular structure. A connecting shaft is arranged in a supporting hole of the supporting frame 3; in order to prevent the support hole from being abraded due to long-term rotation of the rotating shaft, the support hole is protected by a shaft sleeve 6 made of wear-resistant materials; the axle sleeve 6 is installed on the connecting axle of pivot 5, and 6 excircles of axle sleeve are interference fit with the supported hole, and 6 holes of axle sleeve are clearance fit with the connecting axle excircle of pivot 5, and pivot 5 can free rotation and the clearance is not big. The circumference end face of 5 carousels of pivot is evenly opened along the circumferencial direction has 8 square pivot grooves for cooperate the realization pivot location with pivot handle 10. The cuboid structure of the rotating shaft 5 is closely connected with the clamp body 11 through a fixing screw, so that the rotating shaft drives the clamp body to rotate.

Open at the hollow cylinder top of support frame 3 has the handle fixed slot, and open handle fixed slot both sides has the handle fixed orifices, and open handle fixed slot bottom has the spring groove, and spring 8 installs at the spring inslot, and the groove is riveted all around, realizes the spring location. The rotating shaft handle 10 is arranged in the handle fixing groove and is connected with the handle fixing hole through the positioning pin 9; the rotating shaft handle 10 is rotated to enable the bulge at the end part of the rotating shaft handle 10 to be clamped into the square rotating shaft groove of the rotating shaft 5, so that the rotating shaft is positioned. When the rotating shaft handle 10 is pressed downwards, the cylinder at the lower end of the rotating shaft handle 10 is inserted into the spring 8, the bulge at the end part of the rotating shaft handle 10 is lifted to be separated from the rotating shaft groove, the rotating shaft 5 is rotated, and the position of the rotating shaft 5 is adjusted, so that the clamp body is driven to rotate; when the rotating shaft handle 10 is lifted, the bulge on the rotating shaft handle 10 is inserted into the rotating shaft groove, and the rotating shaft positioning is realized.

In order to prevent the rotating shaft from moving, a connecting shaft end of the rotating shaft 5 is provided with a rotating shaft nut 4; in order to ensure that the rotating shaft 5 and the rotating shaft nut 4 are integrated, after the rotating shaft nut 4 is screwed tightly, a through hole is drilled from one end to the other end of the rotating shaft nut 4, and a cotter pin 7 is arranged in the through hole.

As shown in fig. 2, the clamp body 11 includes a clamping ring 12, a connecting block 13, a fixing pin 14, a protective felt 15, a fixing screw 16, a clamp rotating rod 17, a rotating rod sleeve 18, and a handle 19. Wherein, the clamping ring 12 is composed of two semicircular structures, and the inner profile of the clamping ring 12 is in accordance with the outer profile of the position of the plunger pump which can be clamped by force; in order to prevent the surface of the plunger pump shell from being damaged by clamping, a protective felt 15 is stuck to the inner surface of the clamping ring. The clamping ring 12 is firmly connected with the rotating shaft 5 through a fixing screw 16. One ends of two semicircular structures of the clamping ring 12 are connected together through a connecting block 13 and a fixing pin 14, and the opening and closing of the clamp body can be realized; and a semicircular structure at the other end is connected with a clamp rotating rod 17 through a fixing pin, the clamp rotating rod 17 penetrates through the other semicircular structure to be connected with a rotating rod sleeve 18 through threads, a handle 19 is pressed into a through hole at the end part of the rotating rod sleeve 18, and the handle 19 is rotated so as to clamp the two semicircular structures of the clamping ring 12 and further clamp the hydraulic plunger pump.

When the clamp is used, whether the support frame of the clamp is fixed firmly or not is checked, and whether the rotating shaft handle is in a stable state or not is checked; then, according to the requirement of the working position, after the clamp body is rotated to the required position, the handle of the rotating shaft is locked, and the clamp body is ensured to be firmly fixed; opening the clamp body, installing the plunger pump into the clamp body, aligning the matching surface of the clamp, and rotating a handle of the clamp body to ensure that the plunger pump is firmly assembled; and finally entering a working state.

Claims

1. The special clamp for the hydraulic plunger pump of the airplane is characterized by comprising a support frame (3), a rotating shaft (5), a shaft sleeve (6), a spring (8), a positioning pin (9), a rotating shaft handle (10) and a clamp body (11);

the support frame (3) is composed of a base and a hollow cylinder; the base is fixed on the working table surface, so that the stability of the clamp is ensured; the center of the hollow cylinder is a supporting hole, and the center of the supporting hole is the rotating center of the rotating shaft (5);

the rotating shaft (5) is an integrated structure formed by sequentially connecting a connecting shaft, a rotating disc and a cuboid structure; a connecting shaft is arranged in a supporting hole of the supporting frame (3); a shaft sleeve (6) is arranged on a connecting shaft of the rotating shaft (5) and used for protecting the supporting hole; the excircle of the shaft sleeve (6) is in interference fit with the supporting hole, and the inner hole of the shaft sleeve (6) is in clearance fit with the excircle of the connecting shaft of the rotating shaft (5); a plurality of square rotating shaft grooves are uniformly formed in the circumferential end face of the rotating disc of the rotating shaft (5) along the circumferential direction and are used for being matched with a rotating shaft handle to realize rotating shaft positioning; the cuboid structure of the rotating shaft (5) is tightly connected with the clamp body (11), so that the rotating shaft drives the clamp body to rotate;

a handle fixing groove is formed in the top of the hollow cylinder of the support frame (3), handle fixing holes are formed in two sides of the handle fixing groove, a spring groove is formed in the bottom of the handle fixing groove, and a spring (8) is installed in the spring groove; the rotating shaft handle (10) is arranged in the handle fixing groove and is connected with the handle fixing hole through the positioning pin (9); the rotating shaft handle (10) is rotated to enable the bulge at the end part of the rotating shaft handle (10) to be clamped into the square rotating shaft groove of the rotating shaft (5), so that the rotating shaft positioning is realized.

2. The aircraft hydraulic plunger pump special clamp as claimed in claim 1, wherein the clamp body (11) comprises a clamping ring (12), a connecting block (13), a fixing pin (14), a protective felt (15), a fixing screw (16), a clamp rotating rod (17), a rotating rod sleeve (18) and a handle (19); wherein, the clamping ring (12) is composed of two semicircular structures, and the inner profile of the clamping ring (12) is in accordance with the outer profile of the position of the plunger pump which can be clamped by force; in order to prevent the surface of the plunger pump shell from being damaged by clamping, a protective felt (15) is stuck on the inner surface of the clamping ring; the clamping ring (12) and the rotating shaft (5) are fastened and connected through a fixing screw (16); one ends of two semicircular structures of the clamping ring (12) are connected together through a connecting block (13) and a fixing pin (14), and the opening and closing of the clamp body can be realized; a semicircle annular structure of the other end passes through the fixed pin and connects anchor clamps bull stick (17), and anchor clamps bull stick (17) pass through another semicircle annular structure and through threaded connection with bull stick sleeve (18), and handle (19) are connected with bull stick sleeve (18), thereby rotate handle (19) and press from both sides two semicircle annular structures of clamp ring (12) tightly, and then press from both sides tight hydraulic plunger pump.

3. The special clamp for the aircraft hydraulic plunger pump according to claim 1 or 2, wherein in order to prevent the rotating shaft from moving, a rotating shaft nut (4) is installed at the connecting shaft end of the rotating shaft (5); in order to ensure that the rotating shaft (5) and the rotating shaft nut (4) are integrated, after the rotating shaft nut (4) is screwed tightly, a through hole is drilled from one end to the other end of the rotating shaft nut (4), and a cotter pin (7) is arranged in the through hole.

4. The special clamp for the aircraft hydraulic plunger pump according to claim 1 or 2, wherein the number of the rotating shaft grooves is 8.

5. The aircraft hydraulic plunger pump special fixture as claimed in claim 3, wherein the number of the rotating shaft grooves is 8.