A hoisting device capable of attitude following

Abstract

The application belongs to the field of aero-engine experimental devices, and particularly relates to a hoisting device capable of attitude follow-up, which is installed at the top of a pitching support, the pitching support is erected between two support supports, and the hoisting device comprises a bottom mounting seat fixed at the top of the pitching support, a rotary support with an inner ring and an outer ring capable of relative rotation, a lower end of the inner ring being fixedly connected with the bottom mounting seat, and an upper end of the outer ring being connected with the bottom of a hoisting support, a rotary drive system installed at the bottom of the hoisting support, a gear being installed on an output shaft of the rotary drive system, the gear being meshed with the inner ring through the inner teeth, and the H-steel guide rail being arranged on the hoisting support, and an electric hoist being installed on the H-steel. The application adopts the scheme of arranging the hoisting support and two special hoists above the pitching support, and solves the problems of low safety, poor hoisting stability and inconvenient installation.

Description

Technical Field

[0001] This application belongs to the field of aero-engine test equipment, and specifically relates to a hoisting device capable of attitude follow-up. Background Technology

[0002] When conducting attitude tests on a turboprop power source, the turboprop power source with the propeller needs to be hoisted to the corresponding height and cantilevered onto a test platform via the mounting bracket flange. Currently, outdoor hoisting is generally carried out using gantry cranes, jib cranes, or mobile truck cranes.

[0003] Because the lifting height of this test piece is relatively high, the above-mentioned lifting methods are all unsafe for lifting the turboprop power source. Therefore, it is necessary to design a lifting scheme that can meet the requirements of attitude test follow-up.

[0004] Currently, the commonly used outdoor lifting methods, such as gantry cranes, jib cranes, or mobile truck cranes, have the following technical disadvantages:

[0005] a) Due to the high cantilever installation height of the turboprop power source, the safety and stability of using a boom crane or truck crane are poor, and the installation and docking are also inconvenient.

[0006] b) Due to the high hoisting height, using a gantry crane lacks both flexibility and aesthetics;

[0007] c) Due to the limited number of power source attitude tests, the use of truck cranes requires highly skilled operators who possess special driving licenses and equipment operation qualifications, resulting in a relatively high overall cost. Summary of the Invention

[0008] To address the aforementioned problems, a hoisting device capable of attitude following is provided, installed on top of a pitch support, which is erected between two support frames. The hoisting device includes:

[0009] The bottom mounting base is fixed to the top of the pitch bracket;

[0010] A slewing bearing has an inner ring and an outer ring that rotate relative to each other. The upper end of the inner ring is connected to the bottom of a lifting bracket, and the lower end of the outer ring is fixedly connected to a bottom mounting base.

[0011] A rotary drive system is mounted on a bottom mounting base. The output shaft of the rotary drive system is equipped with a gear, which meshes with the inner ring.

[0012] The hoisting support is equipped with H-beam guide rails, and an electric crane is mounted on the H-beams.

[0013] Preferably, the upper surface of the bottom mounting base is provided with multiple radial pin holes, and the hoisting bracket is equipped with a mechanical positioning and locking device at the corresponding position of the pin holes. The mechanical positioning and locking device drives the pin shaft to extend and retract, so that the pin shaft is inserted into or disengaged from the pin hole, thereby limiting and locking the hoisting device.

[0014] Specifically, the outer ring of the slewing bearing is connected to the upper end face of the bottom mounting base by bolts through multiple light holes. The bottom connecting ring plate of the hoisting bracket is connected to the inner ring of the slewing bearing by bolts. A mechanical positioning and locking device is installed at the bottom of the hoisting bracket. When the hoisting device rotates 90° clockwise and counterclockwise, it corresponds exactly to the hole of the bracket.

[0015] Preferably, the slewing bearing adopts an internal toothed single-row four-point contact ball design.

[0016] Preferably, the number of pin holes includes two, and the two pin holes are 90 degrees apart on the circumference.

[0017] Preferably, the mechanical positioning and locking device includes a geared motor and a gear mounted on the output shaft of the geared motor, and the geared motor is mounted on the bottom mounting base via a support.

[0018] Preferably, the top of the hoisting bracket is a rectangular frame, the H-steel guide rail is installed in the middle of the rectangular frame, the lower end of the rectangular frame is connected to a trapezoidal platform frame, and the lower end of the trapezoidal platform frame is connected to a connecting ring plate. The connecting ring plate is circular and has multiple mounting holes, which are connected to the slewing bearing by bolt assemblies.

[0019] Preferably, a rain shelter is installed at the upper end of the rectangular frame.

[0020] Preferably, the rotation direction of the rotary drive system includes both forward and reverse rotation.

[0021] Preferably, the pin hole is configured such that: multiple brackets are mounted on the upper surface of the bottom mounting base, and the pin hole is located on the top of each bracket.

[0022] The advantages of this application include:

[0023] a) The present invention adopts a scheme of setting up a hoisting bracket and two special cranes above the pitching bracket, which solves the problems of low safety, poor hoisting stability and inconvenient installation;

[0024] b) The hoisting support adopts a rotatable hollow frame structure, which solves the problem of the support and other components affecting the propeller flow field; it can hoist both the power source and other auxiliary equipment, thus overcoming the disadvantage of poor flexibility;

[0025] c) With this hoisting solution, hoisting personnel can operate the hoisting power source after receiving operational training, thus solving the problem of high labor and other costs. Attached Figure Description

[0026] Figure 1 This is a front view of the connection between the hoisting device, the pitch support, and the support frame according to a preferred embodiment of this application;

[0027] Figure 2 This is a partial schematic diagram of the connection side of the hoisting device, pitch support and support frame according to a preferred embodiment of this application;

[0028] Figure 3 This is a schematic diagram of the hoisting device structure according to a preferred embodiment of this application;

[0029] Figure 4 yes Figure 3 A view in direction A;

[0030] Figure 5 This is an enlarged view of the slewing bearing according to a preferred embodiment of this application;

[0031] Figure 6 This is a schematic diagram of the hoisting device following the pitch attitude test according to a preferred embodiment of this application;

[0032] Figure 7 This is a perspective view of the slewing bearing according to a preferred embodiment of this application;

[0033] Figure 8 This is a perspective view of a hoisting device according to a preferred embodiment of this application. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, not all, of the embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0035] like Figure 1 , Figure 2 , Figure 6 As shown, the hoisting device is used for hoisting components of the turboprop power source, including the propeller and mounting frame, onto the upper and lower platforms. The hoisting support 1 adopts a hollow steel structure to minimize the impact on the propeller flow field while meeting structural strength requirements.

[0036] The hoisting device is installed on top of the pitch support, which is erected between two support frames, such as... Figures 3-5 The hoisting device includes:

[0037] The bottom mounting base 5 is a plate-type welded structure and is fixed to the top of the pitch support.

[0038] Slewing bearing 4, such as Figure 7 As shown, there are inner and outer rings that rotate relative to each other. The upper end of the inner ring is connected to the bottom of the hanging bracket 1; the lower end of the outer ring is fixedly connected to the bottom mounting base 5.

[0039] The rotary drive system 2 is mounted on the bottom mounting base 5. A gear is installed on the output shaft of the rotary drive system 2, and the gear meshes with the inner ring. This drives the entire lifting bracket to rotate unidirectionally, with a rotation angle range of 0° to 90°. Simultaneously, mechanical positioning and locking devices 6 are installed at the 0° and 90° positions at the bottom of the lifting bracket. An electric pin-cylinder mechanism is used to mechanically limit and lock the rotary lifting device. During attitude testing, the lifting device rotates to a 90° position parallel to the pitch support and is mechanically locked. The electric crane 3 is then moved to the middle of the lifting bracket to fix the crane and hook. The working principle of the mechanical positioning and locking device 6 is as follows: the upper surface of the bottom mounting base 5 has multiple radial pin holes. The lifting bracket 1 has mechanical positioning and locking devices 6 installed at the corresponding positions of the pin holes. The mechanical positioning and locking device 6 drives the pin shaft to extend or retract, inserting or disengaging the pin shaft into or out of the pin hole, thus mechanically limiting and locking the lifting device.

[0040] The hoisting support 1 has an H-steel guide rail at the upper middle position to support the electric crane 3.

[0041] In some alternative embodiments, the slewing bearing 4 adopts an internal tooth type single row four-point contact ball form. The internal tooth structure makes it easier to carry out outdoor protection design of the slewing drive, including the gear ring and gears.

[0042] In some alternative embodiments, the number of pin holes includes two, and the two pin holes are 90 degrees apart on their circumference.

[0043] In some alternative embodiments, the rotary drive system 2 includes a geared motor and a gear mounted on the output shaft of the geared motor.

[0044] In some alternative embodiments, the top of the hoisting bracket 1 is a rectangular frame, such as... Figure 8 As shown, the H-steel guide rail is installed in the middle of the rectangular frame. The lower end of the rectangular frame is connected to the trapezoidal platform frame. The lower end of the trapezoidal platform frame is connected to a connecting ring plate. The connecting ring plate is circular and has multiple mounting holes. The mounting holes are connected to the slewing bearing 4 by bolt assemblies.

[0045] In some alternative embodiments, a rain shelter is installed at the upper end of the rectangular frame, and the hoisting support is a truss hollow welded structure. A thin steel plate protective structure is designed on the top of the hoisting support to form the rain shelter for daily rain protection.

[0046] In some alternative implementations, the rotation direction of the rotary drive system 2 includes both forward and reverse rotation.

[0047] The specific structure of the pin hole is as follows: multiple brackets 7 are installed on the upper surface of the bottom mounting base 5, and the top of the bracket 7 has the pin hole.

[0048] The advantages of this application include:

[0049] a) The present invention adopts a scheme of setting up a hoisting bracket 1 and two special cranes above the pitching bracket, which solves the problems of low safety, poor hoisting stability and inconvenient installation;

[0050] b) The hoisting bracket 1 adopts a rotatable hollow frame structure, which solves the problem of the bracket and other components affecting the propeller flow field; it can hoist both the power source and other auxiliary equipment, thus overcoming the disadvantage of poor flexibility.

[0051] c) With this hoisting solution, hoisting personnel can operate the hoisting power source after receiving operational training, thus solving the problem of high labor and other costs.

[0052] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A hoisting device capable of attitude following, installed on top of a pitch support, the pitch support being erected between two support frames, characterized in that, The hoisting device includes: Bottom mounting base (5), which is fixed to the top of the pitch bracket; The slewing bearing (4) has an inner ring and an outer ring that rotate relative to each other. The upper end of the inner ring is connected to the bottom of the hoisting bracket (1), and the lower end of the outer ring is fixedly connected to the bottom mounting base (5). A rotary drive system (2) is mounted on a bottom mounting base (5). The output shaft of the rotary drive system (2) is equipped with a gear, which meshes with the inner ring. The hoisting bracket (1) is equipped with an H-steel guide rail and an electric crane (3) is installed on the H-steel. The bottom mounting base (5) has multiple radial pin holes on its upper surface. The hoisting bracket (1) is equipped with a mechanical positioning and locking device (6) at the corresponding position of the pin hole. The mechanical positioning and locking device (6) drives the pin shaft to extend and retract, so that the pin shaft is inserted into or removed from the pin hole, thereby limiting and locking the hoisting device. Meanwhile, mechanical positioning and locking devices (6) are installed at the bottom of the lifting support at 0° and 90°. During the attitude test, the lifting device is rotated to the position of 90° with the pitch support and mechanically limited and locked; and the electric crane (3) is moved to the middle of the lifting support to fix the crane and hook.

2. The hoisting device capable of attitude following as described in claim 1, characterized in that, The slewing bearing (4) adopts the form of internal toothed single-row four-point contact ball.

3. The hoisting device capable of attitude following as described in claim 1, characterized in that, The number of pin holes includes two, and the two pin holes are 90° apart on the circumference.

4. The hoisting device capable of attitude following as described in claim 1, characterized in that, The mechanical positioning and locking device (6) includes a geared motor and a gear mounted on the output shaft of the geared motor. The geared motor is mounted on the bottom mounting base (5) via a support.

5. The hoisting device capable of attitude following as described in claim 1, characterized in that, The top of the hoisting bracket (1) is a rectangular frame. The H-steel guide rail is installed in the middle of the rectangular frame. The lower end of the rectangular frame is connected to a trapezoidal platform frame. The lower end of the trapezoidal platform frame is connected to a connecting ring plate. The connecting ring plate is circular and has multiple mounting holes. The mounting holes are connected to the slewing bearing (4) by bolt assemblies.

6. The hoisting device capable of attitude following as described in claim 5, characterized in that, A rain shelter is installed at the top of the rectangular frame.

7. The hoisting device capable of attitude following as described in claim 1, characterized in that, The rotation direction of the rotary drive system (2) includes forward and reverse rotation.

8. The hoisting device capable of attitude following as described in claim 1, characterized in that, The specific structure of the pin hole is as follows: multiple brackets (7) are installed on the upper surface of the bottom mounting base (5), and the top of the bracket (7) has the pin hole.

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