A special tool for disassembling and assembling the fixing bolts on the back of the machine body

Abstract

A special tool for disassembling and assembling the fixing bolts on the back of a machine body, comprising a bow-shaped sleeve, a flexible shaft transmission assembly, a force-limiting wrench connection seat, a bevel gear transmission mechanism, an elbow sleeve and a fixing bolt sleeve; the flexible shaft transmission assembly is sleeved in the bow-shaped sleeve, the force-limiting wrench connection seat is assembled at one end of the flexible shaft transmission assembly, and the other end of the flexible shaft transmission assembly is assembled with the driving gear of the bevel gear transmission mechanism; the bevel gear transmission mechanism is fixedly connected with the fixing bolt sleeve through a driven gear shaft; the elbow sleeve is sleeved outside the bevel gear transmission mechanism, one end of which is fitted with the bow-shaped sleeve, and the other end is fitted with the driven gear shaft of the bevel gear transmission mechanism. The utility model has the characteristics of simple structure and convenient operation, thereby solving the problem that the fixing bolts on the back of the machine body cannot be disassembled and assembled with limited torque due to special position and narrow space, and improving work efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of hand tools, in particular to a special tool for disassembling and assembling fixing bolts on the back side of a machine body. Background Art

[0002] As attached Figure 1 , Figure 2 As shown, a canard actuator 1 on an aircraft has a fixing bolt 3 located on the back of the canard actuator 1. When the aircraft is under maintenance, a force-limiting wrench is required to limit the torque of the fixing bolt 3 to complete the disassembly and assembly operation. However, since the internal components of the aircraft frame 2 at the canard actuator are arranged compactly and the working space is narrow, the force-limiting wrench cannot enter the aircraft frame 2 for normal operation. Therefore, the disassembly and assembly of the fixing bolt 3 on the aircraft canard actuator component becomes a very difficult problem, which seriously affects the work efficiency of the aircraft maintenance. Utility Model Content

[0003] The utility model provides a special tool for disassembling and assembling fixing bolts on the back of a machine body. A soft shaft transmission component is arranged in a bow-shaped sleeve so as to transmit the torque applied to a force limiting wrench on the front of the machine body to the assembly position of the fixing bolts on the back of the machine body, thereby solving the problem of difficulty in disassembling and assembling the fixing bolts in the narrow space on the back of the machine body.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A special tool for disassembling and assembling fixing bolts on the back of a machine body, comprising a bow-shaped sleeve, a flexible shaft transmission assembly, a force-limiting wrench connection seat, a bevel gear transmission mechanism, an elbow sleeve and a fixing bolt sleeve; the flexible shaft transmission assembly is sleeved in the bow-shaped sleeve, the force-limiting wrench connection seat is assembled on one end of the flexible shaft transmission assembly, and the other end of the flexible shaft transmission assembly is assembled with the driving gear of the bevel gear transmission mechanism; the bevel gear transmission mechanism is fixedly connected with the fixing bolt sleeve through a driven gear shaft; the elbow sleeve is sleeved on the outside of the bevel gear transmission mechanism, one end of which is fitted with the bow-shaped sleeve, and the other end is fitted with the driven gear shaft of the bevel gear transmission mechanism.

[0006] The above-mentioned special tool for disassembling and assembling the fixing bolts on the back of the machine body, the flexible shaft transmission assembly includes a first flexible shaft and a second flexible shaft, the first flexible shaft and the second flexible shaft are assembled through a hinge connection structure, a first ring is set on the inner end of the first flexible shaft, and a second ring is set on the inner end of the second flexible shaft, the first ring and the second ring cooperate to form a hinge connection structure.

[0007] The above-mentioned special tool for disassembling and assembling the fixing bolts on the back of the machine body has an annular groove on the inner wall of one end of the elbow sleeve, and an annular flange is provided at the matching position between the bow sleeve and the elbow sleeve. The annular flange is clamped in the annular groove, and the two are assembled in a clearance fit manner to form a relatively rotatable connection structure.

[0008] The above-mentioned special tool for disassembling and assembling the fixing bolts on the back of the machine body, the fixing bolt sleeve is provided with a polygonal inner hole matching the outer wall of the fixing bolt to be disassembled and assembled.

[0009] The above-mentioned special tool for disassembling and assembling the fixing bolts on the back of the machine body, the force-limiting wrench connecting seat is provided with a square inner hole matching the force-limiting wrench.

[0010] The above-mentioned special tool for disassembling and assembling the fixing bolts on the back of the machine body, the bow-shaped sleeve is made of flexible material.

[0011] The above-mentioned special tool for disassembling and assembling the fixing bolts on the back of the machine body is provided with a wear-resistant pad between the bow-shaped sleeve and the force-limiting wrench connecting seat.

[0012] The utility model provides a special tool for disassembling and assembling the fixing bolts on the back of the fuselage. The tool passes through the gap of the fuselage through the matching structure of the bow sleeve and the flexible shaft transmission assembly, so that the torque applied to the force limiting wrench on the front of the fuselage can be transmitted to the fixing bolts on the back of the fuselage. In the specific embodiment of the utility model, the combination of the flexible bow sleeve and the flexible shaft transmission assembly cleverly avoids other parts in the aircraft frame, and realizes the disassembly and assembly of the fixing bolts on the back of the aircraft canard actuator. The angle of the elbow sleeve and the fixing bolt sleeve can be adjusted through the rotatable connection structure of the elbow sleeve and the bow sleeve, in conjunction with the transmission of the bevel gear, which is more convenient for the matching of the fixing bolt sleeve and the fixing bolt to be disassembled. In short, the utility model has the characteristics of simple structure and convenient operation, thereby solving the problem that the fixing bolts on the back of the fuselage cannot be disassembled and assembled by limiting the torque due to the special position and narrow space, and improving the work efficiency of aircraft maintenance operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the assembly structure of the aircraft canard actuator involved in the specific embodiment of the utility model;

[0014] Figure 2 yes Figure 1 K-direction view;

[0015] Figure 3 This is a schematic diagram of the cooperation between the utility model and the force-limiting wrench;

[0016] Figure 4 It is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 5 yes Figure 4 The enlarged view of the structure at position Ⅰ in the middle;

[0018] Figure 6 yes Figure 4 A magnified view of the structure at center Ⅱ;

[0019] Figure 7 It is a schematic diagram of a specific embodiment of the utility model in a working state.

[0020] Explanation of the symbols in the figure:

[0021] 1 is a canard actuator; 2 is an aircraft frame; 3 is a fixing bolt; 4 is a force-limiting wrench; 5 is a special tool, 5-1 is a bow sleeve, 5-2 is a first flexible shaft, 5-3 is a second flexible shaft, 5-4 is an elbow sleeve, 5-5 is a bevel gear transmission mechanism, 5-6 is a fixing bolt sleeve, 5-7 is a force-limiting wrench connecting seat, 5-8 is a hinge connection structure, 5-8-1 is a first ring, 5-8-2 is a second ring, and 5-9 is a wear-resistant pad. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] See also Figure 1 , Figure 2 The canard actuator 1 on a certain type of aircraft has a fixing bolt 3 located on the back of the canard actuator 1. When the aircraft is being repaired, a force-limiting wrench is required to limit the torque of the fixing bolt 3 to complete the disassembly and assembly operation. However, since the internal components of the aircraft frame 2 where the canard actuator 1 is located are arranged compactly and the working space is narrow, the force-limiting wrench cannot enter the aircraft frame 2 for normal operation. Therefore, the disassembly and assembly of the fixing bolt 3 on the aircraft canard actuator component becomes a very difficult problem.

[0024] See also Figure 3 , Figure 4 , Figure 6The utility model provides a special tool for disassembling and assembling the fixing bolts on the back of the machine body, the special tool 5 comprises an arched sleeve 5-1, a flexible shaft transmission assembly, a force-limiting wrench connection seat 5-7, a bevel gear transmission mechanism 5-5, an elbow sleeve 5-4 and a fixing bolt sleeve 5-6; the arched sleeve 5-1 is made of a flexible material such as plastic or metal wire weaving; the flexible shaft transmission assembly is sleeved in the arched sleeve 5-1, a force-limiting wrench connection seat 5-7 is assembled at one end of the flexible shaft transmission assembly, and a wear-resistant pad 5-9 is provided between the arched sleeve 5-1 and the force-limiting wrench connection seat 5-7. The other end of the flexible shaft transmission assembly is assembled with the driving gear of the bevel gear transmission mechanism 5-5; the force limiting wrench connecting seat 5-7 is provided with a square inner hole matching the force limiting wrench 4; the bevel gear transmission mechanism 5-5 is fixedly connected with the fixing bolt sleeve 5-6 through the driven gear shaft; the fixing bolt sleeve 5-6 is provided with a polygonal inner hole matching the outer wall of the fixing bolt 3 to be disassembled; the elbow sleeve 5-4 is sleeved on the outside of the bevel gear transmission mechanism 5-5, one end of which is matched with the bow sleeve 5-1, and the other end is matched with the driven gear shaft of the bevel gear transmission mechanism 5-5.

[0025] See also Figure 4 , Figure 5 The utility model discloses a special tool for disassembling and assembling the fixing bolts on the back of a machine body, and its flexible shaft transmission assembly includes a first flexible shaft 5-2 and a second flexible shaft 5-3. The first flexible shaft 5-2 and the second flexible shaft 5-3 are assembled through a hinge connection structure 5-8. A first ring 5-8-1 is arranged on the inner end of the first flexible shaft 5-2, and a second ring 5-8-2 is arranged on the inner end of the second flexible shaft 5-3. The first ring 5-8-1 and the second ring 5-8-2 cooperate to form a hinge connection structure 5-8.

[0026] See also Figure 4 , Figure 6 The special tool for disassembling and assembling the fixing bolts on the back of the machine body described in the utility model has an annular groove on the inner wall of one end of the elbow sleeve 5-4, and an annular flange is provided at the matching position between the bow sleeve 5-1 and the elbow sleeve 5-4. The annular flange is clamped in the annular groove, and the two are assembled in a clearance fit manner to form a relatively rotatable connection structure.

[0027] See also Figures 1 to 7In the specific embodiment of the utility model, when the above-mentioned special tool 5 is used to disassemble and assemble the fixing bolts 3 on the aircraft canard actuator 1 component, the bending angle of the flexible material bow sleeve 5-1 and the flexible shaft transmission assembly can be adjusted according to the structural dimensions of the aircraft canard actuator 1 and the aircraft frame 2, and the angle of the elbow sleeve 5-4 can be adjusted through the rotatable connection structure between the elbow sleeve 5-4 and the bow sleeve 5-1, in cooperation with the action of the bevel gear transmission mechanism 5-5, so as to make it correspond to the direction and position of the fixing bolt 3 to be disassembled and assembled, and then the elbow sleeve 5-4 is cleverly avoided through the cooperation structure of the bow sleeve 5-1 and the flexible shaft transmission assembly to avoid other parts in the aircraft frame 2, and the elbow sleeve 5-4 is sleeved on the fixing bolt 3 with disassembly and assembly, at this time, the force is applied by the force limiting wrench 4 on the front side of the fuselage, and the torque is transmitted to the fixing bolt 3 on the back side of the fuselage under the cooperation of the flexible shaft transmission assembly and the bevel gear transmission mechanism 5-5, thereby realizing the disassembly and assembly of the fixing bolt 3 on the back side of the aircraft canard actuator 1.

Claims

1. A special tool for disassembling and assembling the fixing bolts on the back of a machine body, characterized in that: The special tool (5) comprises a bow-shaped sleeve (5-1), a flexible shaft transmission assembly, a force-limiting wrench connection seat (5-7), a bevel gear transmission mechanism (5-5), an elbow sleeve (5-4) and a fixing bolt sleeve (5-6); the flexible shaft transmission assembly is sleeved in the bow-shaped sleeve (5-1), the force-limiting wrench connection seat (5-7) is assembled on one end of the flexible shaft transmission assembly, and the other end of the flexible shaft transmission assembly is assembled with the driving gear of the bevel gear transmission mechanism (5-5); the bevel gear transmission mechanism (5-5) is fixedly connected with the fixing bolt sleeve (5-6) via a driven gear shaft; the elbow sleeve (5-4) is sleeved outside the bevel gear transmission mechanism (5-5), one end of which is assembled with the bow-shaped sleeve (5-1), and the other end of which is assembled with the driven gear shaft of the bevel gear transmission mechanism (5-5).

2. The special tool for disassembling and assembling the fixing bolts on the back of the machine body according to claim 1, characterized in that: The flexible shaft transmission assembly comprises a first flexible shaft (5-2) and a second flexible shaft (5-3); the first flexible shaft (5-2) and the second flexible shaft (5-3) are assembled via a hinge connection structure (5-8); a first sleeve ring (5-8-1) is arranged at the inner end of the first flexible shaft (5-2); a second sleeve ring (5-8-2) is arranged at the inner end of the second flexible shaft (5-3); the first sleeve ring (5-8-1) and the second sleeve ring (5-8-2) cooperate to form a hinge connection structure (5-8).

3. The special tool for disassembling and assembling the fixing bolts on the back of the machine body according to claim 2, characterized in that: An annular groove is provided on the inner wall of one end of the elbow sleeve (5-4), and an annular flange is provided at the matching position between the bow sleeve (5-1) and the elbow sleeve (5-4). The annular flange is clamped in the annular groove, and the two are assembled in a clearance fit manner to form a relatively rotatable connection structure.

4. The special tool for disassembling and assembling the fixing bolts on the back of the machine body according to claim 3, characterized in that: The fixing bolt sleeve (5-6) is provided with a polygonal inner hole matching the outer wall of the fixing bolt (3) to be disassembled.

5. The special tool for disassembling and assembling the fixing bolts on the back of the machine body according to claim 4, characterized in that: The force-limiting wrench connecting seat (5-7) is provided with a square inner hole matching the force-limiting wrench (4).

6. The special tool for disassembling and assembling the fixing bolts on the back of the machine body according to claim 4, characterized in that: The arched sleeve (5-1) is made of a flexible material.

7. The special tool for disassembling and assembling the fixing bolts on the back of the machine body according to claim 5 or 6, characterized in that: A wear-resistant pad (5-9) is provided between the bow-shaped sleeve (5-1) and the force-limiting wrench connecting seat (5-7).

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