CN215439567U - Anti-falling device for shear type lifting platform for aircraft maintenance - Google Patents
Anti-falling device for shear type lifting platform for aircraft maintenance Download PDFInfo
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- CN215439567U CN215439567U CN202120351678.XU CN202120351678U CN215439567U CN 215439567 U CN215439567 U CN 215439567U CN 202120351678 U CN202120351678 U CN 202120351678U CN 215439567 U CN215439567 U CN 215439567U
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Abstract
The utility model discloses a falling prevention device for a scissor type lifting platform for aircraft maintenance, which consists of a rack welding assembly, a ratchet welding assembly, a guide rod assembly, a lifting guide wheel assembly, an operating mechanism, a stay wire assembly and a spring, wherein the rack welding assembly is arranged on the rack welding assembly; the rack welding assembly is formed by welding a sleeve, two rack plates, two connecting plates a and a hinge sleeve; the lifting guide wheel assembly consists of a guide wheel, a bearing, a lifting frame, a shaft a, a retainer ring and a nut, the operating mechanism consists of a base, a handle, a friction plate, a shaft b, an adjusting nut, a disc and two butterfly springs, and the stay wire assembly consists of a steel wire, a joint pin, a joint and a protective sleeve. The device adopts a spring to return, is driven by a pull wire, adopts a rotating shaft and a rack, and a ratchet is connected with the scissor type lifting platform; the separation function of the rack and the ratchet is realized by overturning the lifting guide wheel assembly, and the operation is convenient.
Description
Technical Field
The utility model relates to the field of airplanes, in particular to a falling prevention device for a shear type lifting platform for airplane maintenance.
Background
The requirement on the safety level is high because the carrying capacity of the shear type lifting platform for the airplane is large; because the power system is a hydraulic system in most occasions, the anti-falling device is needed for preventing various accidental falls.
SUMMERY OF THE UTILITY MODEL
The utility model provides a falling-proof device for a scissor type lifting platform for airplane maintenance, which overcomes the defects of the prior art and adopts a spring to return, a pull wire is used for driving, a rotating shaft and a rack are adopted, a ratchet is connected with the scissor type lifting platform, the mechanism is flexible in steering, the rigidity is good, the ratchet is reliably meshed, and the falling-proof function is realized through the meshing of the rack and the ratchet; the separation function of the rack and the ratchet is realized by overturning the lifting guide wheel assembly, and the operation is convenient.
In order to solve the technical problems, the utility model provides the following technical scheme:
the utility model provides a falling prevention device for a shear type lifting platform for aircraft maintenance, which consists of a rack welding assembly, a ratchet welding assembly, a guide rod assembly, a lifting guide wheel assembly, an operating mechanism, a stay wire assembly and a spring, wherein the rack welding assembly is arranged on the rack welding assembly; the rack welding assembly is formed by welding a sleeve, two rack plates, two connecting plates a and a hinge sleeve; the ratchet welding assembly is formed by welding two ratchet plates and a connecting plate b; the guide rod component is formed by welding a guide rod and a hinge; the lifting guide wheel assembly consists of a guide wheel, a bearing, a lifting frame, a shaft a, a check ring and a nut, the operating mechanism consists of a base, a handle, a friction plate, a shaft b, an adjusting nut, a disc and two butterfly springs, and the stay wire assembly consists of a steel wire, a joint pin, a joint and a protective sleeve.
As a preferred technical scheme of the utility model, a sleeve of the rack welding assembly is arranged on a pin shaft of a base of the lifting platform and can rotate, and a guide rod of the guide rod assembly is inserted into the sleeve of the ratchet welding assembly and can slide; two ratchet plates of the ratchet welding assembly and a hinge of the guide assembly are arranged on a shaft of the scissor type bracket of the lifting platform and can rotate; the guide wheel and the bearing are fixed in the lifting frame by a shaft, and the lifting guide wheel assembly is clamped in the kidney-shaped grooves of the two ratchet plates in the ratchet welding assembly by a shaft a, a check ring and a nut to move; the disc and the friction plate are arranged in the base, and the shaft is fixed on the disc through the central holes of the base and the friction plate; the two butterfly springs and the handle are sleeved on the shaft b and pressed on the plane of the base shell through the adjusting nuts, and the retaining force of the operating mechanism is changed by adjusting the tightness of the adjusting nuts; one end of the steel wire is connected with the joint, the other end of the steel wire is welded with the joint pin and penetrates through the protective sleeve, the lifting frame of the lifting guide wheel assembly is hinged with the joint of the stay wire assembly, the joint pin of the stay wire assembly is hinged with the disc of the operating mechanism, two ends of the protective sleeve of the stay wire assembly are respectively connected with the connecting plate b of the ratchet welding assembly and the lifting frame of the lifting guide wheel assembly, and the spring is sleeved on the steel wire of the stay wire assembly and compressed between the connecting plate b and the joint.
Compared with the prior art, the utility model has the following beneficial effects:
the device adopts a spring to return, is driven by a pull wire, adopts a rotating shaft and a rack, and a ratchet is connected with the scissor type lifting platform; the separation function of the rack and the ratchet is realized by overturning the lifting guide wheel assembly, and the operation is convenient.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a block diagram of a rack weld assembly of the present invention;
FIG. 3 is a block diagram of the ratchet weld assembly of the present invention;
FIG. 3.1 is a cross-sectional view of the ratchet weld assembly A-A of FIG. 3;
FIG. 4 is a view of the guide bar assembly of the present invention;
FIG. 5 is a structural view of a lift guide wheel assembly of the present invention;
FIG. 6 is a structural view of the operating mechanism of the present invention;
FIG. 7 is a block diagram of the pull wire assembly of the present invention;
in the figure: 1. welding the assembly by the rack; 10. a sleeve; 11. a rack plate; 12. a connecting plate a; 13. a hinge sleeve; 2. a ratchet weld assembly; 21. a ratchet plate; 22. a connecting plate b; 3. a guide bar assembly; 31. a guide bar; 32. a hinge; 4. a lifting guide wheel assembly; 41. a guide wheel; 42. a bearing; 43. a hoisting frame; 44. A shaft a; 45. a retainer ring; 46. a nut; 5. an operating mechanism; 51. a base; 52. a handle; 53. a friction plate; 54. a shaft b; 55. adjusting the nut; 56. a disc; 57. a butterfly spring; 6. a pull wire assembly; 61. A steel wire; 62. a knuckle pin; 63. a joint; 64. a protective sleeve; 7. a spring.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation. Wherein like reference numerals refer to like parts throughout.
In addition, if a detailed description of the known art is not necessary to show the features of the present invention, it is omitted. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
Example 1
Referring to fig. 1-7, the utility model provides a falling prevention device for a scissor type lifting platform for aircraft maintenance, which comprises a rack welding component 1, a ratchet welding component 2, a guide rod component 3, a lifting guide wheel component 4, an operating mechanism 5, a wire pulling component 6 and a spring 7; the rack welding assembly 1 is formed by welding a sleeve 10, two rack plates 11, two connecting plates a12 and a hinge sleeve 13; the ratchet welding assembly 2 is formed by welding two ratchet plates 21 and a connecting plate b 22; the guide rod component 3 is formed by welding a guide rod 31 and a hinge 32; the lifting guide wheel assembly 4 consists of a guide wheel 41, a bearing 42, a lifting frame 43, a shaft a44, a retainer ring 45 and a nut 46, the operating mechanism 5 consists of a base 51, a handle 52, a friction plate 53, a shaft b54, an adjusting nut 55, a disc 56 and two butterfly springs 57, and the wire pulling assembly 6 consists of a steel wire 61, an articulated pin 62, a joint 63 and a protective sleeve 64.
The sleeve 10 of the rack welding assembly 1 is arranged on a base pin shaft of the lifting platform and can rotate, and the guide rod 31 of the guide rod assembly 3 is inserted into the sleeve 10 of the ratchet welding assembly 2 and can slide; the two ratchet plates 21 of the ratchet welding assembly 2 and the hinge 32 of the guide rod assembly 3 are arranged on one shaft of the scissor type bracket of the lifting platform and can rotate; the guide wheel 41 and the bearing 42 are fixed in the lifting frame 43 by a shaft a44, and then the lifting guide wheel assembly 4 is clamped in the kidney-shaped grooves of the two ratchet plates 21 in the ratchet welding assembly 2 by a shaft a44, a retainer ring 45 and a nut 46 for movement; the disc 56 and the friction plate 53 are arranged in the base 51, and the shaft b54 is fixed on the disc 56 through the central holes of the base 51 and the friction plate 53; the two butterfly springs 57 and the handle 52 are sleeved on the shaft b54 and pressed on the plane of the shell of the base 51 through the adjusting nut 55, and the holding force of the operating mechanism 5 is changed by adjusting the tightness of the adjusting nut 55; the steel wire 61 is connected with the joint 63 at one end, welded with the joint pin 62 at the other end and penetrated in the protective sleeve 64, the lifting frame 43 of the lifting guide wheel assembly 4 is hinged with the joint 63 of the wire pulling assembly 6, the joint pin 62 of the wire pulling assembly 6 is hinged with the disc 56 of the operating mechanism 5, the two ends of the protective sleeve 64 of the wire pulling assembly 6 are respectively connected with the connecting plate b22 of the ratchet welding assembly 2 and the lifting frame 43 of the lifting guide wheel assembly 4, and the spring 7 is sleeved on the steel wire 61 of the wire pulling assembly 6 and compressed between the connecting plate b22 and the joint 63.
Further, the working principle is as follows:
the rack welding assembly 1 and the guide rod assembly 3 of the device can slide on the same axis, and simultaneously, the rack welding assembly 1 and the ratchet welding assembly 2 can be buckled and fall-preventing function can be achieved by respectively rotating two connecting shafts of a lifting platform, the ratchet welding assembly 2 and the guide rod assembly 3 rotate around one connecting shaft of the lifting platform, the rack welding assembly 1 and the ratchet welding assembly 2 are buckled, the lifting guide wheel assembly 4 is turned over and moved in the ratchet welding assembly 2 by rotating the tensioning operation mechanism 5 or loosening the pull wire assembly 6, the lifting guide wheel assembly 4 can be turned over in the ratchet welding assembly 2 to separate the rack welding assembly 1 from the ratchet welding assembly 2, and the spring 7 plays a role in returning.
The device adopts the spring 7 to return, the pull wire is used for driving, the rotating shaft and the rack are adopted, the ratchet is connected with the scissor type lifting platform, the mechanism is flexible in steering, the rigidity is good, the ratchet is reliably meshed, and the anti-falling function is realized through the meshing of the rack and the ratchet; the separation function of the rack and the ratchet is realized by overturning the lifting guide wheel assembly 4, and the operation is convenient.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. The anti-falling device for the scissor type lifting platform for aircraft maintenance is characterized by comprising a rack welding assembly (1), a ratchet welding assembly (2), a guide rod assembly (3), a lifting guide wheel assembly (4), an operating mechanism (5), a stay wire assembly (6) and a spring (7); the rack welding assembly (1) is formed by welding a sleeve (10), two rack plates (11), two connecting plates a (12) and a hinge sleeve (13); the ratchet welding assembly (2) is formed by welding two ratchet plates (21) and a connecting plate b (22); the guide rod component (3) is formed by welding a guide rod (31) and a hinge (32); the lifting guide wheel assembly (4) is composed of a guide wheel (41), a bearing (42), a lifting frame (43), a shaft a (44), a check ring (45) and a nut (46), an operating mechanism (5) is composed of a base (51), a handle (52), a friction plate (53), a shaft b (54), an adjusting nut (55), a disc (56) and two butterfly springs (57), and a stay wire assembly (6) is composed of a steel wire (61), a joint pin (62), a joint (63) and a protective sleeve (64).
2. A fall arrest device for a scissor lift platform for aircraft maintenance according to claim 1, characterized in that the sleeve (10) of the rack welding assembly (1) is mounted on the lift platform base pin and can rotate, the guide bar (31) of the guide bar assembly (3) is inserted into the sleeve (10) of the ratchet welding assembly (2) and can slide; two ratchet plates (21) of the ratchet welding assembly (2) and a hinge (32) of the guide rod assembly (3) are arranged on one shaft of the scissor type bracket of the lifting platform and can rotate; the guide wheel (41) and the bearing (42) are fixed in the lifting frame (43) through a shaft a (44), and the lifting guide wheel assembly (4) is clamped in the kidney-shaped grooves of the two ratchet plates (21) in the ratchet welding assembly (2) to move through the shaft a (44), a check ring (45) and a nut (46); the disc (56) and the friction plate (53) are arranged in the base (51), and the shaft b (54) is fixed on the disc (56) through the central holes of the base (51) and the friction plate (53); two butterfly springs (57) and a handle (52) are sleeved on a shaft b (54) and pressed on the plane of the shell of the base (51) through an adjusting nut (55), and the holding force of the operating mechanism (5) is changed by adjusting the tightness of the adjusting nut (55); one end of the steel wire (61) is connected with the joint (63), the other end of the steel wire is welded with the joint pin (62) and penetrates through the protective sleeve (64), the lifting frame (43) of the lifting guide wheel assembly (4) is hinged with the joint (63) of the stay wire assembly (6), the joint pin (62) of the stay wire assembly (6) is hinged with the disc (56) of the operating mechanism (5), two ends of the protective sleeve (64) of the stay wire assembly (6) are respectively connected with the connecting plate b (22) of the ratchet welding assembly (2) and the lifting frame (43) of the lifting guide wheel assembly (4), and the spring (7) is sleeved on the steel wire (61) of the stay wire assembly (6) and compressed between the connecting plate b (22) and the joint (63).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120351678.XU CN215439567U (en) | 2021-02-08 | 2021-02-08 | Anti-falling device for shear type lifting platform for aircraft maintenance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120351678.XU CN215439567U (en) | 2021-02-08 | 2021-02-08 | Anti-falling device for shear type lifting platform for aircraft maintenance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215439567U true CN215439567U (en) | 2022-01-07 |
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ID=79701788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120351678.XU Active CN215439567U (en) | 2021-02-08 | 2021-02-08 | Anti-falling device for shear type lifting platform for aircraft maintenance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215439567U (en) |
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2021
- 2021-02-08 CN CN202120351678.XU patent/CN215439567U/en active Active
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