CN211998544U - Hoisting device for civil aviation auxiliary power device - Google Patents

Abstract

The utility model discloses a hoisting device for a civil aviation auxiliary power device, which relates to the technical field of maintenance of civil aviation auxiliary power devices; the fixed-column cantilever crane comprises an upright column, an I-shaped steel cantilever and a hoisting block, wherein the upper end of the upright column is provided with a vertical fixed shaft parallel to the upright column, and the I-shaped steel cantilever can freely rotate around the vertical fixed shaft; the hoisting block is connected to the bottom of the I-shaped steel cantilever in a sliding manner, and can slide along the I-shaped steel cantilever automatically under the action of tension; the connecting and hanging mechanism comprises an integrally forged lifting lug and a foldable fixing pin, and the support lug part of the integrally forged lifting lug is fixed at the position of a fixed hanging point in the middle of the auxiliary power device through the foldable fixing pin; through implementing this technical scheme, can effectively guarantee safety, steady and not beat when lifting by crane APU, effectively improve the efficiency of lifting by crane in the APU maintenance process, reduce APU and lift by crane operation intensity of labour, simple structure just has fine practicality in the practice process.

Description

Hoisting device for civil aviation auxiliary power device

Technical Field

The utility model relates to a civil aviation auxiliary power device maintains technical field, specifically says, relates to a hoisting accessory that is used for maintenance workshop's civil aviation auxiliary power device.

Background

An Auxiliary Power Unit (APU for short) of civil aircraft is a small centrifugal turbine engine installed at the tail of the aircraft and is mainly used for independently providing Power supply and compressed air for the aircraft. Because civil aviation auxiliary power device structural arrangement is compact, and precision finishing and APU weight are great, need a lot of whole lifts by crane in the workshop maintenance process, and along with the rapid development of national civil aviation industry, the APU send the maintenance volume to increase gradually, consequently design a swift and safe hoisting accessory who is used for aircraft auxiliary power device in the maintenance workshop very necessary.

The hoisting method adopted in the maintenance workshop at present is to use a gantry crane as a hoisting tool, as shown in fig. 6, use a cross beam type double-hoisting cable hanger 7 inherent on an APU product as a connecting tool, and connect a hook at the tail end of a cable 82 on a driving mechanism 81 of the gantry crane 8 to the cross beam type double-hoisting cable hanger 7 for hoisting; the hoisting method specifically comprises the steps that an operator connects the cross beam type double-hoisting steel cable hanger with the front hoisting point and the rear hoisting point of the APU, eight bolts 9 need to be symmetrically screwed and the same screwing force is guaranteed in the process, then a hook at the tail end of the gantry crane steel cable is connected with the cross beam type double-hoisting steel cable hanger, the relative positions of the gantry crane steel cable and the hoisting steel cable in the cross beam type double-hoisting steel cable hanger are manually adjusted by the operator, the gantry crane steel cable and the cross beam type double-hoisting steel cable hanger are approximately on the same vertical line with the gravity center of the APU, and.

However, in the practical process of the inventor of the present application, it is found that the above-mentioned hoisting manner has at least the following technical problems: the lifting mode needs at least two operators to complete the lifting, so that the operation is inconvenient; the position of the center of gravity needs to be adjusted repeatedly, so that the operation efficiency is low; what is more critical is that the operator adjusts the center of gravity position visually and results in a large error, can not guarantee that portal crane cable wire, hoist cable wire and APU focus are on a vertical line, cause the APU to take place the beat because of self action of gravity after lifting easily to have very big potential safety hazard to operator, APU, increased lifting equipment load simultaneously, reduce its life. Therefore, in order to solve the above technical problems, it is necessary for those skilled in the art to study and design another hoisting scheme to solve the problem that the existing complex hoisting operation method is very likely to cause operator fatigue and increase the possibility of human factor errors, which is of great significance.

SUMMERY OF THE UTILITY MODEL

For solving the above-mentioned current APU lifts by crane the technical problem that the mode is complicated and there is great potential safety hazard, the utility model aims to provide a hoisting accessory for civil aviation auxiliary power device, its aim at hoisting accessory can lift by crane the APU and adjust APU focus position well before liftoff automatically, so that lift by crane in-process APU focus and jack-up cable wire plumb line coincidence, reduce the operation intensity of labour who relies on the operator to adjust repeatedly, and safety when guaranteeing to lift by crane, steady and not beat, effectively improve the lifting efficiency among the APU maintenance process, and then guarantee that APU hoists safely and steadily and targetedly, simple structure and have fine practicality in the practice process.

The utility model adopts the technical scheme as follows:

a lifting device for a civil aviation auxiliary power device comprises a fixed column type cantilever crane and a connecting mechanism, wherein the fixed column type cantilever crane comprises an upright post, an I-shaped steel cantilever and a hoisting block, the upper end of the upright post is provided with a vertical fixed shaft parallel to the upright post, and the I-shaped steel cantilever is sleeved on the vertical fixed shaft and extends along the direction vertical to the vertical fixed shaft so as to enable the I-shaped steel cantilever to rotate around the vertical fixed shaft in the horizontal direction; the hoisting block is connected to the bottom of the I-shaped steel cantilever in a sliding manner, and a hoisting steel cable for connecting an auxiliary power device is arranged at the bottom of the hoisting block, so that the hoisting block can slide along the I-shaped steel cantilever automatically under the action of tension; the hanging mechanism comprises an integrally forged lifting lug and a foldable fixing pin, wherein the integrally forged lifting lug comprises a lifting ring part connected with a lifting steel cable and a supporting lug part connected with a fixed hanging point in the middle of the auxiliary power device, so that the supporting lug part is fixed at the fixed hanging point in the middle of the auxiliary power device through the foldable fixing pin.

According to the technical scheme, on one hand, a crossbeam type double-hoisting steel cable lifting appliance recommended by APU manufacturers is abandoned, but an integrally forged lifting lug and a foldable fixing pin structure are redesigned, the integrally forged lifting lug and a fixed hanging point in the middle of an auxiliary power unit (hereinafter referred to as APU) are relatively fixed through a simple and easily-operated foldable fixing pin, the freedom degree of the whole lifting system is reduced, the operation method for connecting the lifting appliance and the APU is simplified, the defect that the traditional lifting appliance with a complex structure indirectly transmits acting force is avoided, stable lifting is realized, the connecting structure is safer and more reliable, and the method is simple and easy to implement. On the other hand, the technical scheme abandons the use of a gantry crane as hoisting equipment, and selects a fixed column type cantilever crane, wherein an I-shaped steel cantilever is not provided with a driving device, and the transverse relative position in the hoisting process of the APU is automatically adjusted by freely rotating around a vertical fixed shaft on an upright column; the hoisting block is free of a driving device when linearly moving on the cantilever I-steel in the horizontal direction, the longitudinal relative position in the hoisting process of the APU is automatically adjusted by sliding along the I-steel cantilever under the action of tension, so that the center of gravity of the APU is coincident with the vertical line of the hoisting cable, and further the center of gravity of the APU is ensured to be determined without deflection in the hoisting process, stable hoisting of the APU is realized, the structural scheme does not need double cooperation, the relative position of the hoisting cable in the normal hoisting tool is visually checked to ensure the hoisting effect, the labor cost is saved, the labor intensity of hoisting operation of the APU is reduced, the hoisting efficiency in the maintenance process is effectively improved, and the APU is ensured to be safely and stably hoisted in place.

Optionally, the suspension ring portion and the lug portion of the integrally forged lifting lug are integrally connected, a hook is arranged at the end portion of the lifting steel cable, a suspension hole matched with the hook is arranged in the suspension ring portion, a pin shaft hole for a foldable fixing pin to pass through is formed in the lug portion, and an axial line of the suspension hole is parallel to an axial line of the pin shaft hole. The lifting steel cable is convenient to adaptively adjust the relative position relationship between the fixed hanging point in the middle of the APU and the gravity center of the APU.

Optionally, a connection transition portion is arranged between the hanging ring portion and the lug portion, the connection transition portion is of a rectangular frustum structure, one end of the connection transition portion, which is small in size, is integrally connected with the hanging ring portion, and one end of the connection transition portion, which is large in size, is integrally connected with the lug portion.

Optionally, the end of the lug part is provided with a deep groove to form a double-fork structure, and two side walls at the middle position of the deep groove are provided with pin shaft holes to form a connecting through hole for the foldable fixing pin to pass through.

Optionally, the width of the deep groove is matched with the thickness of a fixed hanging point in the middle of the auxiliary power device, and the diameter of the foldable fixing pin is matched with the aperture of a fixed hanging point hanging hole in the middle of the auxiliary power device. So that utilize collapsible fixed pin to be connected the back with APU middle part fixed hanging point and integrative forging formula lug, integrative forging formula lug can keep relatively stable fixed with APU middle part fixed hanging point, and the installation is swift convenient to guarantee that APU lifts by crane the in-process and can not the slippage.

Optionally, the foldable fixing pin comprises a fixing pin body, a stop block arranged at one end of the fixing pin body and a folding block arranged at the other end of the fixing pin body, wherein the diameter of the stop block is larger than that of the fixing pin body. Preferably, the stopper is connected to the end of the fixing pin body by welding or screwing to achieve stable connection and prevent falling off.

Optionally, the fixed pin body with the one end that the folding piece is connected has the connection heavy groove, so that the folding piece inserts and connects in the heavy groove and connect through the articulated shaft and realize rotating folding under the action of gravity. Specifically, one end of the folding block connected with the fixing pin body is cut into a connecting part matched with the connecting sinking groove structure, and the folding block is embedded into the connecting sinking groove and is in a straight state with the fixing pin body to form an I-shaped structure.

Optionally, the diameter of the folding block is gradually reduced from the end connected with the fixing pin body to the free end of the folding block, so that the insertion end of the circular truncated cone structure is formed. The foldable fixing pin is guided into the pin shaft hole of the lug support part and the hanging hole of the middle fixing hanging point of the auxiliary power device to realize connection and installation.

Optionally, the terminal surface that fixed pin body and folding piece are connected one end is formed with first end face, be formed with on the folding piece with first end face matched with second end face, the inclined plane setting is personally submitted to first end for the restriction folding piece can only be followed fixed pin body one side and folded.

Optionally, a third stop surface is formed on the end surface of one end of the folding block inserted into the connecting sinking groove, a fourth stop surface matched with the third stop surface is formed at the bottom of the connecting sinking groove of the fixing pin body, the third stop surface is arranged in an inclined plane, and the inclination direction of the third stop surface is opposite to that of the second stop surface; the structural design can effectively limit the folding direction of the folding block, and can also ensure that the folding block and the fixing pin body form stable conjunction connection when the fixing pin body is in a straight quasi I-shaped structure.

As described above, the present invention has at least the following advantages over the prior art:

1. the utility model discloses hoisting accessory can realize that civil aviation auxiliary power device (APU) frequently lifts by crane in workshop maintenance operation in-process, realize that APU and hoist are reliably convenient to be connected, collapsible fixed pin through simple easy operation makes integrative forging formula lug and auxiliary power device middle part fixed hanging point position relatively fixed, whole hoisting system's degree of freedom has been reduced, the shortcoming of the indirect transmission effort of traditional complex construction hoist has been avoided, in order to realize steadily lifting by crane, and make connection structure safe and reliable more.

2. The utility model discloses hoisting accessory lifts by crane the operation and begins the back, APU before liftoff, I-steel cantilever and the hoist block in the hoist and mount can slide the adjustment position by oneself under the pulling force effect, I-steel cantilever rotates the horizontal relative position who adjusts the APU in-process certainly around the stand promptly, the hoist block slides on the I-steel cantilever and adjusts the vertical relative position that APU lifted by crane the in-process by oneself, thereby realize APU focus and the coincidence of hoist cable line plumb line, guarantee that APU focus position confirms and do not take place to deflect at the operation in-process that lifts by crane, realize steadily lifting by crane.

3. The utility model discloses hoisting accessory need not double cooperation, visual inspection and adjusts the relative position of jack-up cable wire in the hoist well and guarantee to lift by crane the effect, the cost of using manpower sparingly to reduce APU and lift by crane operation intensity of labour, effectively improve the efficiency of lifting by crane in the APU maintenance process, in order to guarantee that APU safe and reliable hoist and mount target in place, simple structure just has fine practicality in the practice process.

4. The utility model discloses hoisting method simple accurate, by hoisting accessory automatically regulated and APU centrobaric relative position, avoided relying on the operator to adjust repeatedly and lift by crane the position, reduced operator's operation intensity of labour to avoided the process beat of lifting by crane that the human factor mistake appears, guaranteed that APU lifts by crane steadily, safety, high-efficient, reduce work load.

To sum up, the utility model cancels the continuous use of the crossbeam type double-hoisting cable sling recommended by APU manufacturers for hoisting, redesigns the structure of the integrated forging type lifting lug and the foldable fixed pin, utilizes the foldable fixed pin to conveniently fix the integrated forging type lifting lug at the middle fixed hanging point position of the Auxiliary Power Unit (APU), the middle fixed hanging point position is close to the gravity center position of the APU, and the cable adjustment angle of the hoisting block is small enough, thus effectively solving the technical problem of stability and instability in the hoisting process of the APU; because the I-shaped steel cantilever can freely rotate around the vertical dead axle, the hoisting block can automatically slide along the I-shaped steel cantilever under the action of tension, so an additional driving device is not needed, the hoisting steel cable is rolled under the action of a driving device configured on the hoisting block, so that the center of gravity of the APU can be automatically aligned before the APU is lifted off the ground, the center of gravity of the APU is coincided with the vertical line of the hoisting steel cable in the lifting process, which essentially breaks through the traditional thinking mode of carrying out complex structure improvement on the hoisting tool, and adopts a simple and easy-to-realize structure improvement and hoisting method, can effectively solve the technical problems of complex lifting mode and larger potential safety hazard of the conventional APU, not only can save labor cost, but also can ensure safe and stable lifting without deflection when the APU is lifted, effectively improve the lifting efficiency in the maintenance process of the APU, thereby ensuring that the APU is safely and stably hoisted in place, and having good practicability and popularization and use values.

Drawings

The invention will be described by way of example only and with reference to the accompanying drawings, in which

FIG. 1 is a schematic view of the working state of a lifting device for an auxiliary power device for civil aviation according to an exemplary embodiment of the present invention;

fig. 2 is a schematic view of an integrally forged lug according to an exemplary embodiment of the present invention;

fig. 3 is a schematic view of another view of the integrally forged lug of fig. 2 according to an exemplary embodiment of the present invention;

fig. 4 is a schematic view of a foldable retainer pin in an exemplary embodiment of the invention;

fig. 5 is a schematic view of another perspective of the foldable retainer pin of fig. 4 according to an exemplary embodiment of the present invention;

fig. 6 is a schematic structural diagram of a lifting tool in the background art of the present invention.

Description of reference numerals: 1-upright column; 11-vertical dead axle; 2-an i-steel cantilever; 3-hoisting a hoist; 31-hoisting ropes; 32-hanging hooks; 4-integrally forging the lifting lug; 41-a hanging ring part; 42-hanging holes; 43-ear; 44-pin shaft holes; 45-a connection transition; 46-deep groove; 5-a foldable fixing pin; 51-a fixation pin body; 52-a stop block; 53-folding block; 54-connecting the sink; 55-a hinge axis; 56-first stop surface; 57-a second stop surface; 58-a third stop surface; 59-a fourth stop surface; 6-an auxiliary power unit; 7-cross beam type double-hoisting steel cable sling; 8, gantry crane; 81-a sling; 9-bolt.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

Any feature disclosed in this specification (including any accompanying claims, abstract) may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

The embodiment is basically as shown in figure 1: the embodiment provides a hoisting device for a civil aviation auxiliary power device, which comprises a fixed column type cantilever crane and a coupling mechanism, wherein the fixed column type cantilever crane comprises an upright post 1, an I-shaped steel cantilever 2 and a hoisting hoist 3, the upright post 1 is firmly installed on the ground, a vertical fixed shaft 11 parallel to the upright post 1 is installed at the upper end of the upright post 1 through a fixed support, the I-shaped steel cantilever 2 is sleeved at the lower part of the vertical fixed shaft 11 and extends rightwards along the vertical fixed shaft 11 perpendicular to the upright fixed shaft, so that the I-shaped steel cantilever 2 can freely rotate around the vertical fixed shaft 11 in the horizontal direction, and in order to ensure the installation stability of the I-shaped steel cantilever 2, a pull rope connected with the end part of the right end part of the I-shaped steel cantilever 2 is installed at the upper part of the vertical fixed shaft 11, so that the pull rope, the vertical fixed shaft 11 and the. Further, the hoisting block 3 is slidably connected to the bottom of the i-steel cantilever 2, so that the hoisting block 3 can slide along the i-steel cantilever 2 under the action of tension, a hoisting steel cable 31 for connecting the auxiliary power device 6 is arranged at the bottom of the hoisting block 3, a hook 32 is arranged at the end of the hoisting steel cable 31, the hook 32 is connected with a linking mechanism arranged at a fixed hanging point position in the middle of the auxiliary power device 6, a fixed column type cantilever crane is used as hoisting equipment, and the hoisting is realized by matching with the linking mechanism.

The hanging mechanism provided by the embodiment comprises an integrally forged lifting lug 4 and a foldable fixing pin 5, as shown in fig. 2 and fig. 3, the integrally forged lifting lug 4 provided by the embodiment comprises a lifting ring part 41 connected with a lifting steel cable 31 and a support lug part 43 connected with a fixed hanging point at the middle part of the auxiliary power device 6, and the support lug part 43 is connected with the fixed hanging point at the middle part of the auxiliary power device 6 through the foldable fixing pin 5; specifically, a hanging ring portion 41 and a lug portion 43 of the integrally forged lifting lug 4 are machined into a whole by a forging piece, and the integrally forged lifting lug has good structural strength, a suspension hole 42 matched with the hook 32 is arranged in the middle of the hanging ring portion 41 and used for connecting the hook 32 of the lifting steel cable 31, a pin shaft hole 44 for allowing the foldable fixing pin 5 to pass through is formed in the lug portion 43, the axial line of the suspension hole 42 is parallel to the axial line of the pin shaft hole 44, and the relative position relationship between the middle fixing hanging point and the center of gravity of the APU can be adaptively adjusted conveniently by the lifting steel cable 31.

Specifically, a connecting transition part 45 is arranged between the hanging ring part 41 and the lug part 43, the connecting transition part 45 is of a rectangular frustum structure, the smaller upper end of the connecting transition part 45 is integrally connected with the hanging ring part 41, and the larger lower end of the connecting transition part is integrally connected with the lug part 43, so that the integrally forged lifting lug 4 has better structural strength, lighter weight and effectively improved tensile strength; preferably, the end of the lug part 43 is provided with a deep groove 46 to form a double-fork structure, two side walls of the middle position of the deep groove 46 are both provided with pin shaft holes 44 to form a connecting through hole for the foldable fixing pin 5 to pass through, the width of the deep groove 46 is adapted to the thickness of the middle fixing hanging point of the auxiliary power device 6, the diameter of the foldable fixing pin 5 is adapted to the diameter of the middle fixing hanging point hanging hole of the auxiliary power device 6, and simultaneously, the diameter of the pin shaft hole 44 of the APU formed on the lug part 43 is adapted to the diameter of the middle fixing hanging point hanging hole, so that after the middle fixing hanging point is connected with the integrally forged lifting lug by the foldable fixing pin 5, the integrally forged lifting lug and the APU middle fixing hanging point can be kept relatively stably fixed, the installation is fast and convenient, and the slipping is avoided in the lifting process; therefore, the hook 32 of the hoisting block 3 of the fixed column type cantilever crane is hung on the integrally forged lifting lug, the hoisting operation is carried out by driving devices such as a hoisting block motor, the center of gravity of the APU is finally superposed with the perpendicular line of the hoisting steel cable 31 by self-position adjustment of the I-steel cantilever 2 and the hoisting block 3 under the action of tension, and the APU is prevented from deflection in the hoisting process.

As shown in fig. 4 and 5, the foldable fixing pin 5 provided in the present embodiment includes a fixing pin body 51, a stopper 52 provided at one end of the fixing pin body 51, and a folding block 53 provided at the other end of the fixing pin body 51, the stopper 52 having a diameter larger than that of the fixing pin body 51; as a preference of this embodiment, the stop block 52 can be connected to the end of the fixing pin body 51 by welding or screwing to achieve stable connection and prevent falling off; the folding block 53 can be specifically folded by rotating the folding block 53 along one side perpendicular to the axial direction of the fixing pin body 51 in a manner of fixing the folding block 53 by using a hinge shaft 55, and is not particularly limited thereto, and certainly can be folded in a manner of turning over by using an elastic structure in the prior art, and the folding block is aimed at facilitating the insertion of the foldable fixing pin 5 into the fixing hanging point hanging hole in the middle of the APU and the pin shaft hole 44 of the integrally forged lifting lug, facilitating quick connection and installation, and preventing the APU from slipping during the lifting process of the APU.

As a preferable aspect of the present embodiment, the present embodiment has a connection sinking groove 54 at one end of the fixing pin body 51 connected with the folding block 53, so that the folding block 53 is inserted into the connection sinking groove 54 and connected by a hinge shaft 55, so that the folding block 53 can be rotatably folded around the hinge shaft 55; specifically, the one end that folding piece 53 is connected with fixed pin body 51 is cut into with the connecting portion of connecting heavy groove 54 structure looks adaptation, from this the connecting portion of folding piece 53 insert connect can form straight state with fixed pin body 51 cooperation after sinking the groove 54 and imitate "I" shape structure, and because the gravity of folding piece 53 tip is greater than its gravity of cutting the link, after collapsible fixed pin 5 is connected and is installed, folding piece 53 realizes rotating folding because of the action of gravity free flagging, collapsible fixed pin 5 after the folding is the structure of imitating "L", such collapsible fixed pin 5 convenient to use is swift, and make the lug can not the slippage in the lifting process.

Furthermore, a first stop surface 56 is formed on the end surface of the connecting end of the fixing pin body 51 and the folding block 53, a second stop surface 57 matched with the first stop surface 56 is formed on the folding block 53, and the first stop surface 56 is arranged in an inclined plane and used for limiting the folding block 53 to be folded only along one side of the fixing pin body 51; the end face of one end of the folding block 53 inserted into the connecting sinking groove 54 is provided with a third stop surface 58, the bottom of the connecting sinking groove 54 of the fixing pin body 51 is provided with a fourth stop surface 59 matched with the third stop surface 58, the third stop surface 58 is arranged in an inclined plane, and the inclination direction of the third stop surface 58 is opposite to that of the second stop surface 57, the structural design can not only effectively limit the folding direction of the folding block 53, but also can ensure that the folding block 53 and the fixing pin body 51 form stable conjunction connection when forming a straight quasi-I-shaped structure; the diameter of the folding block 53 is gradually reduced from the end close to the connection with the fixing pin body 51 to the free end thereof, so that an insertion end with a circular truncated cone structure is formed, and connection and installation are realized by the pin shaft hole 44 of the foldable fixing pin 5 leading into the lug part 43 and the hanging hole of the middle fixing hanging point of the auxiliary power device 6.

From the above, the lifting device in this embodiment abandons the use of the crossbeam type double-lifting steel cable 31 lifting tool recommended by APU manufacturers, but makes the positions of the integrally forged lifting lug 4 and the middle fixed hanging point of the auxiliary power unit 6 (hereinafter referred to as APU) relatively fixed through the foldable fixing pin 5 which is simple and easy to operate, reduces the degree of freedom of the whole lifting system, simplifies the operation method for connecting the lifting tool and the APU, avoids the defect that the traditional lifting tool with a complex structure indirectly transmits acting force, realizes stable lifting, and makes the connection structure safer, more reliable, simple and easy to implement; meanwhile, the hoisting device of the embodiment abandons the use of a gantry crane as hoisting equipment, and selects a fixed column type cantilever crane, wherein the I-steel cantilever 2 is not provided with a driving device, and the transverse relative position of the APU in the hoisting process is automatically adjusted by freely rotating around a vertical fixed shaft 11 on the upright column 1; the hoisting block 3 does not have a driving device when linearly moving on the cantilever I-steel in the horizontal direction, the longitudinal relative position in the hoisting process of the APU is automatically adjusted by sliding along the I-steel cantilever 2 under the action of tension, so that the center of gravity of the APU is coincided with the perpendicular line of the hoisting steel cable 31, the determination of the center of gravity position of the APU is ensured without deflection in the hoisting process, stable hoisting of the APU is realized, the hoisting device does not need double cooperation, the relative position of the hoisting steel cable 31 in the hoisting block is visually checked and aligned to ensure the hoisting effect, the labor cost is saved, the labor intensity of hoisting operation is reduced, the hoisting efficiency in the maintenance process of the APU is effectively improved, the APU is ensured to be safely and stably hoisted in place, the structural design is simple, the fixed mounting is convenient, the hoisting device is suitable.

On the other hand, fig. 1 shows the utility model discloses an exemplary operating condition schematic diagram that is used for civil aviation auxiliary power device's hoisting accessory, according to the utility model discloses, this embodiment still provides a civil aviation auxiliary power device's method of hoisting accessory, uses the hoisting accessory that fig. 1 shows, and this method of hoisting accessory includes following step:

s1, manufacturing a foldable fixing pin 5 and an integrally forged lifting lug 4 according to the hole diameter of a hanging hole of a fixed hanging point at the middle part of the auxiliary power device 6;

s2, aligning the lug supporting part 43 of the integrally forged lifting lug with the middle fixed hanging point position of the auxiliary power device 6, so that the pin shaft hole 44 of the lug supporting part 43 is aligned with the hanging hole of the middle fixed hanging point of the auxiliary power device 6;

s3, inserting the foldable fixed pin 5 into the pin shaft hole 44 of the lug part 43 of the integrally forged lifting lug 4 and the hanging hole of the middle fixed hanging point of the auxiliary power device 6; so that the integrally forged lifting lug 4 and the middle fixed hanging point of the auxiliary power device 6 are relatively fixed;

s4, the folding block 53 at the end of the folding fixing pin 5 is freely folded due to gravity, so that the folding fixing pin 5 is in a quasi-L-shaped structure;

s5, the hook 32 arranged on the hoisting cable 31 at the bottom of the hoisting block 3 is hooked on the hanging ring part 41 of the integrally forged lifting lug 4;

s6, the hoisting steel cable 31 is rolled by a driving device arranged in the hoisting block 3, the I-shaped steel cantilever 2 and the hoisting block 3 automatically slide to adjust the position under the action of tension, so that the gravity center of the auxiliary power device 6 and the suspended hoisting steel cable 31 are hoisted on the same vertical line, and the auxiliary power device 6 can stably ascend and descend without deflection.

In the hoisting method of the embodiment, in step S2, the deviation between the vertical line where the middle fixed hanging point of the auxiliary power device 6 is located and the vertical line where the center of gravity of the auxiliary power device 6 is located is less than 10mm, so that the auxiliary power device 6 does not deflect to a large extent in the hoisting process; preferably, the hoisting speed configured for the driving device in the hoist 3 in step S6 is 0.8m/min to 8m/min, so that the angle of adjustment of the hoisting cable 31 of the hoist 3 is small enough to hoist, and as can be known from many times of practice of the utility model, the hoisting speed is configured to 0.8m/min to hoist slowly, so as to ensure that the APU can hoist stably after the positions of the i-steel cantilever 2 and the hoist 3 are adjusted by sliding under the action of the pulling force.

In conclusion, the hoisting method can realize reliable and convenient connection of the Auxiliary Power Unit (APU) and the lifting appliance when the APU is frequently connected in the workshop-level maintenance operation process, is simple and easy to implement, automatically adjusts the relative position of the hoisting device and the center of gravity of the APU, avoids the dependence on repeated adjustment of the hoisting position by an operator, reduces the operation labor intensity of the operator, avoids deflection of the hoisting process caused by human factor errors, ensures stable, safe and efficient hoisting of the APU, reduces the workload, has good popularization and use values, and is suitable for popularization and use of the Auxiliary Power Unit (APU) in the workshop-level maintenance operation process.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, the protection scope of the present invention is defined by the claims, and all structural changes equivalent to the description and drawings of the present invention should be covered by the protection scope of the present invention.

Claims (10)

1. The utility model provides a hoisting accessory for civil aviation auxiliary power device which characterized in that: the fixed-column cantilever crane comprises an upright column, an I-shaped steel cantilever and a hoisting block, wherein a vertical fixed shaft parallel to the upright column is arranged at the upper end of the upright column, and the I-shaped steel cantilever is sleeved on the vertical fixed shaft and extends along the direction perpendicular to the vertical fixed shaft, so that the I-shaped steel cantilever can rotate around the vertical fixed shaft in the horizontal direction; the hoisting block is connected to the bottom of the I-shaped steel cantilever in a sliding manner, and a hoisting steel cable for connecting an auxiliary power device is arranged at the bottom of the hoisting block, so that the hoisting block can slide along the I-shaped steel cantilever automatically under the action of tension; the hanging mechanism comprises an integrally forged lifting lug and a foldable fixing pin, wherein the integrally forged lifting lug comprises a lifting ring part connected with a lifting steel cable and a supporting lug part connected with a fixed hanging point in the middle of the auxiliary power device, so that the supporting lug part is fixed at the fixed hanging point in the middle of the auxiliary power device through the foldable fixing pin.

2. The hoisting device for the auxiliary power unit for civil aviation according to claim 1, characterized in that: the hoisting ring part and the lug part of the integrally forged lifting lug are integrally connected, a hook is arranged at the end part of the hoisting steel cable, a suspension hole matched with the hook is arranged in the middle of the hoisting ring part, a pin shaft hole for a foldable fixing pin to pass is formed in the lug part, and the axial line of the suspension hole is parallel to the axial line of the pin shaft hole.

3. The hoisting device for the auxiliary power unit for civil aviation according to claim 2, characterized in that: the hanging ring part and the lug part are provided with connecting transition parts, and the connecting transition parts are of rectangular frustum structures.

4. The hoisting device for the auxiliary power unit for civil aviation according to claim 2, characterized in that: the end part of the lug supporting part is provided with a deep groove to form a double-block fork-shaped structure, and pin shaft holes are formed in two side walls at the middle position of the deep groove to form a connecting through hole for the foldable fixing pin to pass through.

5. The hoisting device for the auxiliary power unit for civil aviation according to claim 4, characterized in that: the width of the deep groove is matched with the thickness of a fixed hanging point in the middle of the auxiliary power device, and the diameter of the foldable fixing pin is matched with the aperture of a fixed hanging point hanging hole in the middle of the auxiliary power device.

6. The hoisting device for the auxiliary power unit for civil aviation according to claim 1, characterized in that: the foldable fixing pin comprises a fixing pin body, a stop block arranged at one end of the fixing pin body and a folding block arranged at the other end of the fixing pin body, wherein the diameter of the stop block is larger than that of the fixing pin body.

7. The hoisting device for the auxiliary power unit for civil aviation according to claim 6, characterized in that: the fixed pin body with the one end that the folding piece is connected has and connects heavy groove, so that the folding piece inserts connect heavy inslot and connect through the articulated shaft and realize rotating folding under the action of gravity.

8. The hoisting device for the auxiliary power unit for civil aviation according to claim 7, characterized in that: the diameter of the folding block from one end connected with the fixing pin body to the free end of the folding block is gradually reduced, so that the insertion end of the circular truncated cone structure is formed.

9. The hoisting device for the auxiliary power unit for civil aviation according to claim 7, characterized in that: the terminal surface that fixed pin body and folding piece are connected one end is formed with first end face, be formed with on the folding piece with first end face matched with second end face, the inclined plane setting is personally submitted to first end.

10. The hoisting device for the auxiliary power unit for civil aviation according to claim 9, characterized in that: the terminal surface of folding piece insert connection heavy inslot one end is formed with the third and ends the position face, the heavy inslot bottom of connection of fixed pin body is formed with and ends position face matched with fourth with the third and end the position face, the inclined plane setting is personally submitted to the third, and the third end the position face the incline direction with the second end the position face the slope aspect of opposite.

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