CN216861483U

CN216861483U - RAT overall assembling trolley

Info

Publication number: CN216861483U
Application number: CN202123436810.6U
Authority: CN
Inventors: 周明智; 赵小俊; 柯兵; 谢再茂; 张敬
Original assignee: AVIC Jincheng Nanjing Engineering Institute of Aircraft Systems
Current assignee: AVIC Jincheng Nanjing Engineering Institute of Aircraft Systems
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-07-01
Anticipated expiration: 2031-12-30

Abstract

The utility model discloses an RAT overall assembly trolley. The device comprises a vehicle body (1), a horizontal adjusting wheel (2), a strut I (3), a strut II (4), a strut III (5), a bolt (6), a bush (7), a washer (8) and a nut (9); the supporting columns I, II and III are arranged on the vehicle body (1) in a triangular distribution mode, and the mounting positions of the vehicle body (1) and the supporting columns I (3), II (4) and III (5) are provided with a lining (7) structure; the relative positions of the strut I (3), the strut II (4) and the strut III (5) are matched with the hanging point position of the assembled RAT frame (10), and the strut is used for supporting and fixing the RAT frame (10); the number of the horizontal adjusting wheels (2) is 4, and the horizontal adjusting wheels are fixed at four corners of the vehicle body (1). The utility model can assist assembly test workers to complete the overall integrated assembly of the RAT and the work of transporting the RAT to a wind tunnel and the like, thereby achieving the purposes of reducing the workload of the assembly test workers and improving the working efficiency.

Description

RAT overall assembling trolley

Technical Field

The utility model relates to the technical field of aviation product assembly processes, in particular to an RAT overall assembly trolley.

Background

The RAT is an aircraft emergency energy device and mainly comprises a turbine, an actuator, a gear box, a supporting arm, a frame, a hydraulic pump and other parts, and the product has a complex structure, a large structural size and heavy weight. When the RAT is generally assembled, parts such as a turbine, an actuator, a gear box and a hydraulic pump and accessories such as cables, oil pipes and position switches need to be integrally assembled, so that the assembly difficulty is high. And moreover, the product is required to be transferred to a wind tunnel for performance test after being assembled. The current assembly test method is: when the RAT frame is placed on an assembly desktop for assembly, the RAT needs to be repeatedly lifted and covered in the integrated assembly process, and a large amount of physical force is consumed. After assembly, a plurality of assembling workers manually lift the RAT into the wind tunnel to carry out a wind tunnel test, and the whole assembly test is time-consuming and labor-consuming and has low efficiency.

SUMMERY OF THE UTILITY MODEL

The purpose of the utility model is: a RAT ensemble fitting cart is provided. The utility model can assist assembly test workers to complete the overall integrated assembly of the RAT and the work of transporting the RAT to a wind tunnel and the like, thereby achieving the purposes of reducing the workload of the assembly test workers and improving the working efficiency.

The technical scheme of the utility model is as follows: a RAT overall assembly trolley comprises a trolley body, horizontal adjusting wheels, a strut I, a strut II, a strut III, a bolt, a bush, a washer and a nut; wherein, the pillars I, II and III are arranged on the vehicle body in a triangular distribution, and the mounting positions of the vehicle body, the pillars I, II and III are designed with bushing structures; the relative positions of the strut I, the strut II and the strut III are matched with the hanging point position of the assembled RAT frame, and the strut is used for supporting and fixing the RAT frame; the total number of the horizontal adjusting wheels is 4, and the horizontal adjusting wheels are fixed at four corners of the vehicle body.

In the RAT general assembly trolley, the center of gravity of the RAT frame supported and fixed by the three struts, i.e., the strut i, the strut ii and the strut iii, is located at the center of the vehicle body.

Among the aforesaid RAT totality assembly dolly, the bush of respectively supporting of three pillar of pillar I, pillar II, pillar III, the bush has flange structure, and the flange mounting has a helicitic texture at the automobile body upper surface, and the design of pillar lower extreme has a helicitic texture, and the pillar inserts the bush from the automobile body top, and a packing ring is placed to the automobile body lower surface, and the nut is twisted the screw thread of pillar lower extreme to fix each pillar on the automobile body.

In the RAT overall assembly trolley, three hanging points of the RAT frame are respectively fixed with the strut I, the strut II and the strut III through bolts.

In the RAT overall assembly trolley, the trolley body is of a symmetrical structure, the length L2 of the trolley body is in the range of 850-1000 mm, the width L1 of the trolley body is in the range of 700-850 mm, and the height H of the trolley body is in the range of 280-350 mm.

In the RAT overall assembly trolley, the trolley body is a rectangular plate with the thickness of 18 mm-22 mm, two long sides of the trolley body are symmetrically provided with concave edges, and one short side of the trolley body is also provided with a concave edge; wherein, the concave edge on the long edge is respectively cut off a part of the long edge and a part of the short edge, so that the length L3 of the residual short edge is in the range of 450 mm-500 mm, the length L4 of the residual long edge is in the range of 150 mm-230 mm, and the radius R1 of the concave edge is in the range of 120 mm-180 mm.

The utility model has the advantages that:

1. the utility model has multiple functions: besides the function of assisting the overall integrated assembly of the RAT, the device also has the function of transferring the RAT;

2. the utility model has good accessibility and is convenient to assemble: the utility model adopts a three-pillar structure to support the RAT, so that the RAT can be exposed in all directions in front of assembly workers, all parts can reach, and the overall assembly of the RAT can be facilitated;

3. the utility model adopts a 4-leg and 3-fulcrum design structure, has low gravity center and stable overall structure, and is not easy to cause rollover accidents;

4. the utility model has simple structure and lower manufacturing cost;

5. the vehicle body part adopts the concave edge design, so that an assembler can more easily access the RAT, and the assembly operation is facilitated.

Drawings

Fig. 1 is a configuration of the present invention.

Fig. 2 is a front view of the present invention.

FIG. 3 is a top view of FIG. 2

Figure 4 is a schematic representation of the assembly implementation of the present invention.

The device comprises a vehicle body 1, a horizontal adjusting wheel 2, a support I3, a support II 4, a support III 5, a bolt 6, a bush 7, a gasket 8, a nut 9, an RAT frame 10 and a concave edge 11.

Detailed Description

The utility model is further illustrated by the following figures and examples, which are not to be construed as limiting the utility model.

Example 1. An RAT overall assembly trolley is shown in figures 1-4 and comprises a trolley body 1, a horizontal adjusting wheel 2, a support I3, a support II 4, a support III 5, a bolt 6, a bush 7, a washer 8, a nut 9 and the like. Wherein the installation positions of the vehicle body 1 and the pillars I3, II 4 and III 5 are designed with a bush 7 structure, which can effectively prevent the abrasion between the pillars and the vehicle body 1. The positions of the support I3, the support II 4 and the support III 5 on the vehicle body are determined by the hanging point positions of the assembled RAT frame, the support is fixed on the vehicle body through a bush 7, a washer 8 and a nut 9, and the support is used for supporting and fixing the RAT frame. The number of the horizontal adjusting wheels 2 is 4, and the horizontal adjusting wheels are fixed at four corners of the vehicle body 1. The RAT general assembly trolley has the fixing seat function during RAT general assembly and the function of moving the RAT.

As shown in figure 4, the three pillars I3, II 4 and III 5 are all made of steel materials and have strong strength and rigidity. The three struts are positioned in the middle of the vehicle body 1, and when the RAT is installed on the trolley, the gravity center of the RAT is ensured to be positioned in the center of the vehicle body. When the assembled RAT is positioned at the center of the vehicle body, the rollover accident is not easy to occur during the assembling and transporting processes.

As shown in figures 2 and 3, three columns, column I3, column II 4 and column III 5 are respectively provided with a bush 7. The bush 7 is made of steel material and has a flange structure, the flange is installed on the upper surface of the vehicle body 1, the lower end of the pillar is designed with a thread structure, the pillar is inserted into the bush from the upper side of the vehicle body 1, the lower surface of the vehicle body 1 is provided with a washer 8, and a nut 9 is screwed into the thread of the lower end of the pillar to fix each pillar on the vehicle body 1.

Three hangers of the RAT frame are respectively fixed with the support I3, the support II 4 and the support III 5 through bolts 6. When the frame is installed, the frame is firstly arranged at the position corresponding to the support, and the bolt 6 at the position of the support III 5 is preferentially inserted. After the bolt is inserted, the posture of the frame is manually adjusted, so that the mounting holes in the frame are aligned with the bolt holes in the support I3 and the support II 4, and then the bolts 6 are respectively inserted, so that the RAT frame is mounted on the assembling trolley.

As shown in figures 2 and 3, the trolley is of a symmetrical structure, the length L2 of the trolley is within the range of 850 mm-1000 mm, the width L1 of the trolley is within the range of 700 mm-850 mm, and the height H of the trolley is within the range of 280 mm-350 mm.

As shown in figures 2 and 3, the vehicle body 1 is a plate with the thickness of 18 mm-220 mm, and in order to reduce the total weight, the vehicle body 1 is made of aluminum alloy. The structure of the vehicle body 1 is designed with concave edges, wherein L3 is in the range of 450 mm-500 mm, L4 is in the range of 150 mm-230 mm, and R1 and R2 are in the range of 120 mm-180 mm. By adopting the concave edge design, the accessibility of assembly can be effectively improved, and the assembly personnel can operate conveniently.

The 4 horizontal adjusting wheels 2 have lifting and locking functions and can be all universal wheels. Alternatively, the two horizontal adjusting wheels on the sides of the support I3 and the support II 4 can be designed as directional wheels, and the two horizontal adjusting wheels on the other side can be designed as universal wheels.

When the RAT is assembled, 4 horizontal adjusting wheels 2 are adjusted to be in an extension and locking mode, and the vehicle body is leveled and fixed. At the moment, the assembly trolley plays a role of a fixing seat during overall assembly, the trolley has good stability, is not easy to shake and facilitates RAT assembly.

After the RAT overall assembly is completed, 4 horizontal adjusting wheels 2 are adjusted into a roller mode, and the RAT is transported to a test site by pushing a trolley.

Claims

1. A RAT overall assembly trolley is characterized by comprising a trolley body (1), a horizontal adjusting wheel (2), a strut I (3), a strut II (4), a strut III (5), a bolt (6), a bush (7), a washer (8) and a nut (9); the supporting columns I, II and III are arranged on the vehicle body (1) in a triangular distribution mode, and the mounting positions of the vehicle body (1) and the supporting columns I (3), II (4) and III (5) are provided with a lining (7) structure; the relative positions of the strut I (3), the strut II (4) and the strut III (5) are matched with the hanging point position of the assembled RAT frame (10), and the strut is used for supporting and fixing the RAT frame (10); the number of the horizontal adjusting wheels (2) is 4, and the horizontal adjusting wheels are fixed at four corners of the vehicle body (1).

2. RAT total assembly trolley according to claim 1, characterized in that the centre of gravity of the RAT frame (10) supported by three struts, i (3), ii (4) and iii (5), is located in the centre of the car body (1).

3. A RAT general assembly trolley according to claim 1, characterized in that three supports I (3), II (4) and III (5) are respectively provided with a bush (7), the bush (7) has a flange structure, the flange is arranged on the upper surface of the trolley body (1), the lower end of the support is designed with a thread structure, the support is inserted into the bush from the upper part of the trolley body (1), a gasket (8) is arranged on the lower surface of the trolley body (1), and a nut (9) is screwed into the thread at the lower end of the support to fix the supports on the trolley body (1).

4. An RAT overall assembly trolley according to claim 1, characterized in that three suspension points of the RAT frame are fixed with a strut I (3), a strut II (4) and a strut III (5) respectively through bolts (6).

5. The RAT overall assembly trolley of claim 1 wherein the trolley body is of a symmetrical configuration having a length L2 in the range of 850mm to 1000mm, a width L1 in the range of 700mm to 850mm, and a height H in the range of 280mm to 350 mm.

6. The RAT general assembly trolley according to claim 1, wherein the trolley body (1) is a rectangular plate with the thickness of 18 mm-22 mm, two long sides of the trolley body (1) are symmetrically provided with concave edges (11), and one short side of the trolley body (1) is also provided with a concave edge (11); wherein, the concave edge (11) on the long edge cuts off part of the long edge and part of the short edge respectively, so that the length L3 of the remaining short edge is in the range of 450 mm-500 mm, the length L4 of the remaining long edge is in the range of 150 mm-230 mm, and the radius R1 of the concave edge (11) is in the range of 120 mm-180 mm.