Device and method for quick assembly and disassembly of a complete machine based on pulsating lines

Abstract

The application provides a device and method for quick mounting and dismounting of a complete engine based on a pulsating line, wherein the device comprises a transfer vehicle chassis, a transfer device, a pull rod and a transfer ring; the method comprises the following steps: step one, entering a work station; step two, docking, gradually lowering the engine to make the engine contact with the transfer device; connecting the pull rod with the engine and gradually locking, when the tension sensor on the pull rod shows that the tension reaches a set value, removing the connection point between the engine and the C-shaped ring on the engine; step three, completing the docking and auxiliary fixing. The application selects a suitable interface position, sets a tension sensor at the connection point between the equipment and the engine, determines the installation and dismounting time by monitoring the tension change, ensures one-time quick completion of the installation and dismounting of the equipment, realizes quick circulation of the complete engine, and greatly avoids the use of a wrench in the connection method between the engine hoist and the complete engine transport vehicle, reduces the labor intensity of workers and saves the assembly time.

Description

Technical Field

[0001] The present invention relates to the technical field of engine transfer, and in particular to a device and method for quick disassembly and assembly of a whole engine based on a pulse line. Background Art

[0002] As a high-tech industry in China, aircraft engines have strict requirements in every link. As the last checkpoint before delivery, the aircraft engine test run link has particularly strict process flow and process requirements. After the aircraft engine is assembled into a complete machine, different process steps need to be completed at different workstations. Due to the fixed nature of the engine installation points, the engine must be installed from the engine transport vehicle to the engine pre-assembly vehicle, so that the engine installation points are exposed, and then the engine is installed from the pre-assembly vehicle to the engine stand mounting frame. Since the fixation of aircraft engines at each workstation has strict installation requirements, the transfer and fixation between different workstations is a task that accounts for a high proportion of the workload in the production process.

[0003] Before external assembly of the engine, it needs to be transported using an engine hoist and a complete engine transport vehicle. Currently, when installing and disassembling between the engine hoist and the complete engine transport vehicle, a large number of threaded connectors need to be installed and disassembled, and multiple adjustments are often required. The installation and disassembly speed is slow, which is not suitable for the quick installation and disassembly method of tooling and is inefficient. Summary of the Invention

[0004] In response to the problems existing in the prior art, the present invention proposes a device and method for quick disassembly and assembly of a complete machine based on a pulsating line. A suitable interface position is selected, and a matching interface tooling is designed. A tension sensor is set at the connection point between the equipment and the engine. The installation and disassembly timing is determined by monitoring the tension change, ensuring that the installation and disassembly of the equipment can be completed quickly in one go, thereby realizing the rapid circulation of the complete engine. The connection method between the complete engine hoist and the complete engine transport vehicle avoids the use of wrenches to a large extent, reduces the labor intensity of workers, and saves assembly time.

[0005] In view of this, on the one hand, the present invention provides a device for quick disassembly and assembly of a complete machine based on a pulsating line, comprising a conversion vehicle chassis, an adapter, a pull rod and an adapter ring; the adapter, the pull rod and the adapter ring are all arranged on the upper end surface of the conversion vehicle chassis, and the adapter is arranged between the pull rod and the adapter ring, the pull rod is arranged on one end of the conversion vehicle chassis, and a tension sensor is provided on the pull rod; the adapter ring is arranged at the other end of the conversion vehicle chassis.

[0006] Preferably, it further comprises a fine-tuning trolley, which comprises a rotating frame connected to rotate with two degrees of freedom, lateral and longitudinal. The adapter and the pull rod are arranged on the fine-tuning trolley.

[0007] Furthermore, the adapter device is also connected to a fine-tuning device, which is arranged on the fine-tuning trolley.

[0008] Preferably, the transfer device includes a longitudinal support frame, a transverse tie rod support, an arc-shaped bracket, a swing support seat, a rear tie rod and an oblique support; one end of the longitudinal support frame is connected to the chassis of the conversion vehicle, and the other end is connected to the middle position of the transverse tie rod support; one end of the transverse tie rod support is connected to the bottom end of the arc-shaped bracket, and the top end of the arc-shaped bracket is connected to the swing support seat; the other end of the transverse tie rod support is connected to one end of the rear tie rod, and the other end of the rear tie rod is connected to the chassis of the conversion vehicle; the oblique support is supported between the longitudinal support frame and the chassis of the conversion vehicle.

[0009] Preferably, both ends of the pull rod are connected to the engine and the chassis of the conversion vehicle respectively; and the tension sensor is electrically connected to the human-machine interface.

[0010] Preferably, the two ends of the adapter ring are respectively connected to the engine and the chassis of the conversion vehicle; and the upper end of the adapter ring is provided with an arc-shaped support.

[0011] On the other hand, a method for quick disassembly and assembly of a whole machine based on a pulse line, using the above-mentioned device for quick disassembly and assembly of a whole machine based on a pulse line, comprises the following steps:

[0012] Step 1: Enter the workstation

[0013] The whole machine quick disassembly and assembly device enters the position below the engine to be transported and aligns with the engine;

[0014] Step 2: Connect

[0015] The engine is gradually lowered to make the engine contact with the adapter; the pull rod is connected to the engine and gradually tightened; when the tension sensor on the pull rod shows that the tension reaches the set value, the connection point between the engine and the C-ring on the engine is removed;

[0016] Step 3: Complete docking and assist in fixing

[0017] After the engine is separated from the C-ring, the engine is completely fixed to the device for quick disassembly and assembly of the whole machine, and an adapter ring is used to assist in fixing the front end of the engine to complete the process of quick disassembly and assembly of the whole machine.

[0018] Preferably, in step one, the quick-disassembly and quick-assembly device of the whole machine is aligned with the engine so that the front end of the engine is aligned with the adapter ring, and the engine is aligned with the swing support seat; during the alignment process, when there is an error in the alignment, fine-tuning is performed through the fine-tuning device until the engine is completely aligned with the swing support seat.

[0019] Preferably, in step 2, the contact between the engine and the adapter is that the lower surface of the engine contacts the arc-shaped bracket of the adapter, and the swing support seat of the adapter is connected to the ear support of the engine.

[0020] Preferably, in step three, the use of an adapter ring to assist in fixing the front end of the engine is to fix the arc-shaped support on the adapter ring to the bottom of the flange of the front end of the engine.

[0021] The beneficial effects of the present invention are:

[0022] 1. In the present invention, a tension sensor is set on the tooling of the engine interface, and the timing of disassembly and assembly of the connection point is determined by observing the change of the tension value, so as to ensure that the installation and disassembly process is stress-free and successful in one time. The operation process is simple, and only the pin shaft needs to be installed and removed, which saves assembly time.

[0023] 2. The connection method between the complete engine hoist and the complete engine transport vehicle of the present invention replaces the method of using the complete engine hoist to transport the engine, greatly reducing the use of wrenches and lowering the labor intensity of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a front view of the overall structure of the present invention;

[0026] Figure 3 This is a structural diagram of the fine-tuning trolley of the present invention;

[0027] Figure 4 Schematic diagram of the switching device of the present invention;

[0028] In the figure: 1. Transfer vehicle chassis; 2. Adapter; 21. Longitudinal support frame; 22. Transverse pull rod support; 23. Arc bracket; 24. Swing support seat; 25. Rear pull rod; 26. Oblique support; 3. Pull rod; 4. Adapter ring; 41. Arc support; 5. Fine-tuning trolley; 6. Fine-tuning device; 7. Engine; 71. Flange. DETAILED DESCRIPTION

[0029] The technical solution of the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] On the one hand, see Figures 1 to 3As shown, the present invention is a device for quick disassembly and assembly of a whole machine based on a pulsating line, comprising a conversion vehicle chassis 1, an adapter 2, a pull rod 3 and an adapter ring 4; the adapter 2, the pull rod 3 and the adapter ring 4 are all arranged on the upper end surface of the conversion vehicle chassis 1, and the adapter 2 is arranged between the pull rod 3 and the adapter ring 4, the pull rod 3 is arranged on one end of the conversion vehicle chassis 1, and a tension sensor is provided on the pull rod 3; the adapter ring 4 is arranged at the other end of the conversion vehicle chassis 1.

[0031] In this embodiment, the chassis 1 of the transfer vehicle is an AGV (Automated Guided Vehicle) body, which supports the quick-disassembly and quick-assembly device of the whole machine. The adapter 2 is installed on the chassis 1 of the transfer vehicle for direct docking with the engine 7 to be transferred. The engine 7 to be transferred is fixed to the transfer station by a C-ring clamp. Preferably, an automatic navigation system is also provided on the chassis 1 of the transfer vehicle for positioning and controlling the chassis 1 of the transfer vehicle to travel to the loading and unloading position of the engine 7; and a lifting cylinder is provided on the chassis of the transfer vehicle chassis 1, and the number of the lifting cylinders is four.

[0032] For further information, see Figure 3 As shown, it also includes a fine-tuning trolley 5, which includes a rotating frame connected to rotate with two degrees of freedom in the horizontal and vertical directions; the adapter device 2 and the pull rod 3 are arranged on the fine-tuning trolley 5.

[0033] In this embodiment, the fine-tuning trolley 5 is used to perform manual fine-tuning in the horizontal and longitudinal directions after the transfer vehicle chassis 1 is accurately positioned; the adapter 2 is installed on the transfer vehicle chassis 1 through the fine-tuning trolley 5, the lower end of the fine-tuning trolley 5 is fixed on the frame of the transfer vehicle chassis 1, and the upper end of the fine-tuning trolley 5 is connected to the adapter 2; the fine-tuning trolley 5 is an important load-bearing structure, which is welded with structural steel and the surface is galvanized after welding.

[0034] See also Figure 4 As shown, the transfer device 2 includes a longitudinal support frame 21, a transverse tie rod support 22, an arc-shaped bracket 23, a swing support seat 24, a rear tie rod 25 and an oblique support 26; one end of the longitudinal support frame 21 is connected to the conversion vehicle chassis 1, and the other end is connected to the middle position of the transverse tie rod support 22; one end of the transverse tie rod support 22 is connected to the bottom end of the arc-shaped bracket 23, and the top end of the arc-shaped bracket 23 is connected to the swing support seat 24; the other end of the transverse tie rod support 22 is connected to one end of the rear tie rod 25, and the other end of the rear tie rod 25 is connected to the conversion vehicle chassis 1; the oblique support 26 is supported between the longitudinal support frame 21 and the conversion vehicle chassis 1.

[0035] In this embodiment, the longitudinal support frame 21 is arranged longitudinally, and the bottom end of the longitudinal support frame 21 is connected to the transfer vehicle chassis 1 through the fine-tuning trolley 5; the top of the longitudinal support frame 21 is connected to the middle part of the transverse tie rod support 22, and the number of transverse tie rod supports 22 is two, which are horizontally arranged on both sides of the top of the longitudinal support frame 21, and the same end of the two transverse tie rod supports 22 is connected to the arc bottom of the arc bracket 23. The arc bracket 23 is an arc-shaped structure, which plays a supporting role. The top two end points of the arc bracket 23 are each connected to a swing support seat 24, and the two swing support seats 24 are respectively connected to the interfaces on both sides of the body of the engine 7; the other end of the two transverse tie rod supports 22 is respectively connected to a rear pull rod 25, and the other end of the rear pull rod 25 is connected to the transfer vehicle chassis 1 through the fine-tuning trolley 5; the number of oblique supports 26 is two, one end of the oblique support 26 is connected to the side wall of the longitudinal support frame 21, and the other end is connected to the transfer vehicle chassis 1 through the fine-tuning trolley 5.

[0036] See also Figure 1 and 2 As shown, the two ends of the pull rod 3 are respectively connected to the engine 7 and the chassis 1 of the conversion vehicle; the tension sensor is electrically connected to the human-machine interface.

[0037] In this embodiment, there are two pull rods 3. One end of the pull rod 3 is mounted on the chassis 1 of the transfer vehicle and on the same side as the adapter 2 via a fine-tuning trolley 5. The other end of the pull rod 3 is connected to both sides of the bottom end of the engine 7. A tension sensor is provided on the pull rod 3. The tension sensor is electrically connected to a human-machine interface (HMI) located on the chassis 1 of the transfer vehicle. The HMI displays the value on the HMI to monitor whether the center of gravity of the engine 7 has been completely transferred to the adapter 2, thereby achieving precise monitoring of the center of gravity of the engine 7 and meeting the needs of quick installation or removal. Preferably, the tension sensor has a load capacity of 2t and an accuracy of 0.2%; the sensor outputs a millivolt signal and is powered by a DC 12V supply.

[0038] See also Figure 1 and Figure 2 As shown, the two ends of the adapter ring 4 are respectively connected to the engine 7 and the chassis 1 of the conversion vehicle; the upper end of the adapter ring 4 is provided with an arc-shaped support 41.

[0039] In this embodiment, the bottom end of the connecting ring is arranged at the front end of the conversion vehicle chassis 1, and the top end of the connecting ring is connected to the engine 7 through an arc-shaped support 41 to assist in fixing the front of the engine 7.

[0040] See also Figure 1 As shown, the adapter 2 is further connected to a fine-tuning device 6 , which is provided on the fine-tuning trolley 5 .

[0041] In this embodiment, the fine-tuning device 6 is arranged on the fine-tuning trolley 5 and is connected to the adapter 2; the fine-tuning device 6 includes a rotating roller, which rotates to drive the adapter 2 to move forward and backward along the chassis 1 of the transfer vehicle, so that the adapter 2 is completely aligned with the ear support on the engine 7.

[0042] On the other hand, see Figures 1-4 As shown, a method for quick disassembly and assembly of a whole machine based on a pulse line of the present invention adopts the above-mentioned device for quick disassembly and assembly of a whole machine based on a pulse line, comprising the following steps:

[0043] Step 1: Enter the workstation and align

[0044] The quick-disassembly and quick-assembly device of the whole machine enters the position below the engine 7 to be transported and aligns with the engine 7;

[0045] Step 2: Connect

[0046] The engine 7 is gradually lowered so that the engine 7 contacts the adapter 2; the pull rod 3 is connected to the engine 7 and gradually tightened; when the tension sensor on the pull rod 3 shows that the tension reaches the set value, the connection point between the engine 7 and the C-ring is removed;

[0047] Step 3: Complete docking and assist in fixing

[0048] After the engine 7 is separated from the C-ring, the engine 7 is completely fixed to the quick-disassembly and quick-assembly device of the whole machine, and the adapter ring 4 is used to assist in fixing the front end of the engine 7 to complete the quick-disassembly and quick-assembly process of the whole machine.

[0049] As a preferred embodiment, in the above step 1, the quick-disassembly and quick-assembly device of the whole machine is aligned with the engine 7 so that the front end of the engine 7 is aligned with the adapter ring 4, and the engine 7 is aligned with the swing support seat 24.

[0050] In this embodiment, the transfer vehicle chassis 1 uses an automatic navigation system to automatically locate and control the complete machine quick-disassembly and quick-installation device along a predetermined route to the workstation below the engine 7 to be transferred, so that the C-ring on the engine 7 to be transferred is between the adapter 2 and the adapter ring 4, the adapter ring 4 is aligned with the front flange 71 of the engine 7, and the ear support of the engine 7 to be transferred is aligned with the swing support seat 24 of the adapter 2. In order to be compatible with two types of four engines 7, the distance between the upper surface of the transfer vehicle chassis 1 and the ground is 600mm, and a sufficient safety distance needs to be left between the engine 7 support port and the upper surface of the chassis so that the complete machine quick-disassembly and quick-installation device can be moved to the position directly below the engine 7 regardless of whether the C-ring opening is facing up or down.

[0051] Furthermore, during the alignment process, when there is an error in the alignment, fine adjustment is performed through the fine adjustment device 6 until the engine 7 and the swing support seat 24 are completely aligned.

[0052] In this embodiment, the rotating roller on the fine-tuning device 6 is rotated to slightly move the adapter 2 forward and backward along the transfer vehicle chassis 1, so that the swing support base 24 of the adapter 2 is completely aligned with the ear support of the engine 7. Preferably, the fine-tuning trolley 5 is manually adjusted in both the horizontal and vertical directions simultaneously.

[0053] As a preferred embodiment, in the above step 2, the contact between the engine 7 and the adapter 2 is that the lower surface of the engine 7 contacts the arc-shaped bracket 23 of the adapter 2, and the swing support seat 24 of the adapter 2 is connected to the engine 7.

[0054] In this embodiment, the engine 7 to be transported is clamped by the C-ring and gradually lowered until the lower surface of the engine 7 contacts the arc-shaped bracket 23 of the adapter 2, and the swing support seat 24 is connected to the ear support of the engine 7; as the engine 7 descends, the center of gravity of the engine 7 is slowly transferred to the adapter 2.

[0055] Furthermore, the swing support base 24 is connected to the engine 7 as an ear support connection between the swing support base 24 and the engine 7 .

[0056] As a preferred embodiment, in the above step 2, the two pull rods 3 are locked to the lower surface of the engine 7 .

[0057] In this embodiment, when the engine 7 gradually falls onto the adapter 2, the pull rod 3 is subjected to tension, and the value of the tension sensor on the pull rod 3 is displayed in the human-machine interface. When the tension reaches a certain value, it means that the weight of the engine 7 is completely transferred to the adapter 2, and the pin between the multi-free multi-platform C-ring and the engine 7 is pulled out.

[0058] As a preferred embodiment, in the above step three, the adapter ring 4 is used to assist in fixing the front end of the engine 7 by fixing the arc-shaped support 41 on the adapter ring 4 to the bottom of the flange 71 at the front end of the engine 7.

[0059] In this embodiment, to ensure easy removal of the connecting pins between the engine 7 and the C-shaped ring of the multi-DOF assembly platform, the curved support 41 of the adapter ring 4 is aligned with the bottom of the flange 71 at the front end of the engine 7, fully fitting against the flange 71 to provide support. If this is not necessary, the adapter ring 4 can be folded inward and secured in place using a locking device.

[0060] Preferably, after the engine 7 is detached from the multi-freedom multi-platform, it is completely secured to the complete machine quick-release and quick-install device. The operator issues instructions to automatically navigate or remotely control the engine 7 to the upper hanging line. Note that the oil cylinder must be placed in the lowest position during transportation. Once the engine 7 reaches the upper hanging line, if necessary, the lifting function of the vehicle is used to lift the entire engine 7 100 mm to facilitate its transfer from the complete machine quick-release and quick-install device to the pulse line. This process still requires determining the gravity detection value.

[0061] Preferably, through actual experience, the multi-freedom multi-assembly platform may be uneven or in various conditions, making it difficult to dock the upper body with the engine 7. The chassis 1 of the vehicle used for the quick-disassembly and quick-assembly device of the whole machine can also supplement the two degrees of freedom of axial rotation and pitch through the four lifting cylinders on the chassis to ensure stable and rapid docking under working conditions.

[0062] In the specific process of the above-mentioned method for quick disassembly and assembly of a complete machine on a pulsating line, the alignment of the quick disassembly and assembly device of the complete machine and the engine 7 is a difficult and critical point. Only when they are completely aligned can the engine 7 be transferred from the platform to the quick disassembly and assembly device of the complete machine. The adjustment accuracy of the assembly platform and the alignment adjustment of the quick disassembly and assembly device of the complete machine are also critical. The working principle of the present invention is as follows:

[0063] (1) Alignment refers to the alignment of the ear support of the engine 7 and the swing support base 24 of the adapter 2;

[0064] (2) The weight transfer monitoring of the engine 7 is calculated by the value displayed by the tension rod 3 and the tension sensor on the tension rod 3;

[0065] (3) The alignment principle of the fine-tuning device 6 is the screw principle.

Claims

1. A device for quick disassembly and assembly of a whole machine based on a pulse line, characterized in that: It includes a transfer vehicle chassis, a transfer device, a pull rod and an adapter ring; the transfer device, the pull rod and the adapter ring are all arranged on the upper end surface of the transfer vehicle chassis, and the transfer device is arranged between the pull rod and the adapter ring. The pull rod is arranged on one end of the transfer vehicle chassis, and a tension sensor is provided on the pull rod; the adapter ring is arranged on the other end of the transfer vehicle chassis, and the upper end of the adapter ring is provided with an arc-shaped support; The transfer device includes a longitudinal support frame, a transverse tie rod support, an arc-shaped bracket, a swing support seat, a rear tie rod and an oblique support; one end of the longitudinal support frame is connected to the chassis of the conversion vehicle, and the other end is connected to the middle position of the transverse tie rod support; one end of the transverse tie rod support is connected to the bottom end of the arc-shaped bracket, and the top end of the arc-shaped bracket is connected to the swing support seat; the other end of the transverse tie rod support is connected to one end of the rear tie rod, and the other end of the rear tie rod is connected to the chassis of the conversion vehicle; the oblique support is supported between the longitudinal support frame and the chassis of the conversion vehicle.

2. The device for quick assembly and disassembly of a whole machine based on a pulse line according to claim 1, characterized in that: It also includes a fine-tuning trolley, which includes a rotating frame connected to rotate with two degrees of freedom, namely, horizontal and vertical. The adapter and the pull rod are arranged on the fine-tuning trolley.

3. The whole machine quick disassembly and assembly device based on the pulse line according to claim 2 is characterized in that: The adapter device is also connected to a fine-tuning device, which is arranged on the fine-tuning trolley.

4. The device for quick assembly and disassembly of a whole machine based on a pulse line according to claim 1, characterized in that: The two ends of the pull rod are respectively connected to the engine and the chassis of the conversion vehicle; the tension sensor is electrically connected to the human-machine interface.

5. The device for quick assembly and disassembly of a whole machine based on a pulse line according to claim 1, characterized in that: The two ends of the adapter ring are respectively connected to the engine and the chassis of the conversion vehicle.

6. A method for quick disassembly and assembly of a whole machine based on a pulse line, using the device for quick disassembly and assembly of a whole machine based on a pulse line according to claim 1, characterized in that: The steps include: Step 1: Enter the workstation and align The whole machine quick disassembly and assembly device enters the position below the engine to be transported and aligns with the engine; Step 2: Connect The engine is gradually lowered to make the engine contact with the adapter; the pull rod is connected to the engine and gradually tightened; when the tension sensor on the pull rod shows that the tension reaches the set value, the connection point between the engine and the C-ring on the engine is removed; Step 3: Complete docking and assist in fixing After the engine is separated from the C-ring, the engine is completely fixed to the device for quick disassembly and assembly of the whole machine, and an adapter ring is used to assist in fixing the front end of the engine to complete the process of quick disassembly and assembly of the whole machine.

7. The method for quick disassembly and assembly of a whole machine based on a pulse line according to claim 6, characterized in that: In step one, the quick-disassembly and quick-assembly device of the whole machine is aligned with the engine so that the front end of the engine is aligned with the adapter ring, and the engine is aligned with the swing support seat; when there is an error in the alignment, fine-tuning is performed through the fine-tuning device until the engine is completely aligned with the swing support seat.

8. The method for quick disassembly and assembly of a whole machine based on a pulse line according to claim 6, characterized in that: In the step 2, the contact between the engine and the adapter is that the lower surface of the engine contacts the arc-shaped bracket of the adapter, and the swing support seat of the adapter is connected to the ear support of the engine.

9. The method for quick disassembly and assembly of a whole machine based on a pulse line according to claim 6, characterized in that: In step three, the use of an adapter ring to assist in fixing the front end of the engine is to fix the arc-shaped support on the adapter ring to the bottom of the flange of the front end of the engine.

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