Connecting device of electric cylinder and undercarriage

Abstract

The invention discloses a connecting device of an electric cylinder and an undercarriage, and relates to the technical field of electric cylinder disassembly, the connecting device of the electric cylinder and the undercarriage comprises a connecting piece, a rotating seat and a moving piece, the connecting piece is arranged at the bottom of the undercarriage, the rotating seat is arranged at the bottom of the connecting piece and is rotatably connected with the connecting piece, and the moving piece is arranged on the rotating seat. The moving part is rotationally connected with the rotating seat, the moving part is further connected with an electric cylinder, when the rotating seat rotates to a first position, the moving part is connected with the rotating seat so as to enable the electric cylinder to be connected with the undercarriage, and when the rotating seat rotates to a second position, the moving part is connected with the electric cylinder so as to enable the electric cylinder to be connected with the undercarriage. According to the undercarriage, the moving part is separated from the rotating seat, so that the electric cylinder is separated from the undercarriage, pin shaft connection is replaced by connection of the rotating seat and the moving part, the difficulty in the mounting and dismounting process is reduced, the labor intensity of operators is also reduced, and the maintenance and replacement efficiency of the undercarriage is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric cylinder disassembly, and in particular to a connecting device between an electric cylinder and a landing gear. Background Art

[0002] The electric cylinder is an electric drive device that converts the rotational motion of the motor into the linear reciprocating motion of the push rod. It has a wide range of applications and important technical characteristics. It uses a motor, a gear set and a connecting rod as a driving component. The power generated by the motor drives the lead screw to rotate so that the telescopic rod can extend and retract in a linear direction. The electric cylinder is usually connected to the landing gear, and the pitch angle of the landing gear is controlled by controlling the extension and retraction stroke of the electric cylinder.

[0003] In the prior art, the electric cylinder is generally connected to the landing gear by a pin shaft. However, the pin shaft connection has high matching accuracy, and the installation and disassembly process is complicated and difficult, which increases the labor intensity of the operator and reduces the maintenance and replacement efficiency of the landing gear. Summary of the invention

[0004] An embodiment of the present invention provides a connecting device for an electric cylinder and a landing gear, so as to solve the technical problems in the related art that the pin shaft connection adopted by the existing electric cylinder and the landing gear has high matching precision, the installation and disassembly process is complicated and difficult, the labor intensity of the operator is increased, and the maintenance and replacement efficiency of the landing gear is reduced.

[0005] An embodiment of the present invention provides a connection device between an electric cylinder and a landing gear, comprising:

[0006] A connecting piece, the connecting piece is arranged at the bottom of the landing gear;

[0007] A rotating seat, which is disposed at the bottom of the connecting member and is rotatably connected thereto;

[0008] A moving member, the moving member is rotatably connected to the rotating seat, and the moving member is also connected to the electric cylinder;

[0009] When the rotating seat rotates to a first position, the moving member is connected to the rotating seat so that the electric cylinder is connected to the landing gear; when the rotating seat rotates to a second position, the moving member is separated from the rotating seat so that the electric cylinder is separated from the landing gear.

[0010] In some embodiments, the rotating seat includes:

[0011] Two collars, the two collars are arranged outside the connecting member along the circumferential direction and are rotatably connected thereto;

[0012] The rotating gear sleeve is arranged at the bottom of the connecting member and connected with the two sleeve rings. The rotating gear sleeve and the two sleeve rings rotate along the circumferential direction of the connecting member.

[0013] In some embodiments, a plurality of first bolt holes are provided on the side surface of the rotating gear sleeve along the circumferential direction, and each of the first bolt holes matches with a second bolt hole provided on the collar.

[0014] In some embodiments, a through hole is provided in the middle of the rotating gear sleeve, and two tooth grooves are correspondingly provided on both sides of the through hole for detachable connection with the moving part.

[0015] In some embodiments, the moving member is a tooth column, the tooth column is embedded in the through hole, and two groups of straight teeth are correspondingly provided on both sides of the tooth column, and the two groups of straight teeth are matched with the two tooth grooves respectively.

[0016] In some embodiments, a plurality of third bolt holes are provided above the connecting member along a circumferential direction, and the plurality of third bolt holes are used for connecting with the landing gear.

[0017] In some embodiments, the connecting device between the electric cylinder and the landing gear further includes:

[0018] A limiting component is arranged on one side of the rotating gear sleeve and is used to cooperate with a cross-shaped groove arranged at the bottom of the connecting member to limit the rotation of the rotating gear sleeve.

[0019] In some embodiments, the limiting component includes:

[0020] A limit pin, the limit pin passes through the rotating gear sleeve and is connected to the cross-shaped groove;

[0021] A handle, the handle is connected to the bottom of the limit pin and extends to the outside of the rotating gear sleeve;

[0022] A bracket, one end of which is connected to the outside of the rotating gear sleeve, and the other end of which is connected to the middle of the handle. The handle moves up and down around the bracket and drives the limit pin to move up and down.

[0023] In some embodiments, the bracket includes two connection blocks that are spaced apart from each other, and the other ends of the two connection blocks are respectively connected to two sides of the handle.

[0024] In some embodiments, the limit pin is a cylindrical structure that is larger at the top and smaller at the bottom, and the top end of the limit pin matches the cross-shaped groove.

[0025] The beneficial effects brought about by the technical solution provided by the present invention include:

[0026] An embodiment of the present invention provides a connecting device between an electric cylinder and a landing gear, comprising: a connecting member, a rotating seat and a moving member, wherein the connecting member is arranged at the bottom of the landing gear, the rotating seat is arranged at the bottom of the connecting member and is rotatably connected thereto, the moving member is rotatably connected to the rotating seat, and the moving member is also connected to the electric cylinder, when the rotating seat is rotated to a first position, the moving member is connected to the rotating seat to connect the electric cylinder to the landing gear, and when the rotating seat is rotated to a second position, the moving member is separated from the rotating seat to separate the electric cylinder from the landing gear, and by connecting the rotating seat to the moving member instead of a pin shaft connection, the difficulty of the installation and disassembly process is reduced, the labor intensity of the operator is also reduced, and the maintenance and replacement efficiency of the landing gear is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 A schematic diagram of the structure of a connection device between an electric cylinder and a landing gear provided in an embodiment of the present invention;

[0029] Figure 2 A cross-sectional view of a connection device between an electric cylinder and a landing gear provided by an embodiment of the present invention;

[0030] Figure 3 A schematic diagram of the structure of a rotating gear sleeve provided in an embodiment of the present invention;

[0031] Figure 4 A schematic diagram of the structure of a tooth column provided in an embodiment of the present invention;

[0032] Figure 5 A schematic diagram of the connection state between the rotating seat and the moving member provided in an embodiment of the present invention;

[0033] Figure 6 A schematic diagram of a disassembled state of a rotating seat and a moving part provided in an embodiment of the present invention;

[0034] Figure 7 A schematic diagram of the structure of a connecting piece provided in an embodiment of the present invention;

[0035] Figure 8 A schematic diagram of the structure of a collar provided in an embodiment of the present invention;

[0036] Fig. 9 A schematic diagram of the structure of a limit pin provided in an embodiment of the present invention;

[0037] Fig.10 A schematic diagram of the structure of a bracket provided in an embodiment of the present invention;

[0038] Reference numerals:

[0039] 1. Connecting piece; 11. Third bolt hole; 12. Cross-shaped groove;

[0040] 2. Rotating seat; 21. Ring; 211. Second bolt hole; 22. Rotating gear sleeve; 221. First bolt hole; 222. Through hole; 2221. Tooth groove; 223. Limiting hole;

[0041] 3. Moving part; 31. Tooth column; 311. Straight teeth;

[0042] 4. Landing gear;

[0043] 5. Electric cylinder;

[0044] 6. Limiting assembly; 61. Limiting pin; 62. Handle; 63. Bracket; 631. Connecting block. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] An embodiment of the present invention provides a connecting device between an electric cylinder and a landing gear, which can solve the technical problems in the related art that the pin shaft connection between the existing electric cylinder and the landing gear has high matching accuracy, the installation and disassembly process is complicated and difficult, the labor intensity of the operator is increased, and the maintenance and replacement efficiency of the landing gear is reduced.

[0047] Figure 1 A connecting device between an electric cylinder and a landing gear provided in an embodiment of the present invention comprises: a connecting member 1, a rotating seat 2 and a moving member 3.

[0048] The connecting member 1 is arranged at the bottom of the landing gear 4, the rotating seat 2 is arranged at the bottom of the connecting member 1 and is rotatably connected thereto, the moving member 3 is rotatably connected to the rotating seat 2, and the moving member 3 is also connected to the electric cylinder 5. When the rotating seat 2 rotates to a first position, the moving member 3 is connected to the rotating seat 2 so that the electric cylinder 5 is connected to the landing gear 4. When the rotating seat 2 rotates to a second position, the moving member 3 is separated from the rotating seat 2 so that the electric cylinder 5 is separated from the landing gear 4.

[0049] The connecting device of the electric cylinder and the landing gear provided in the embodiment of the present invention is provided with a connecting member, a rotating seat and a moving member, the connecting member is arranged at the bottom of the landing gear, the rotating seat is arranged at the bottom of the connecting member and is rotatably connected thereto, the moving member is rotatably connected to the rotating seat, and the moving member is also connected to the electric cylinder, when the rotating seat is rotated to a first position, the moving member is connected to the rotating seat so that the electric cylinder is connected to the landing gear, when the rotating seat is rotated to a second position, the moving member is separated from the rotating seat so that the electric cylinder is separated from the landing gear, and the connection or disassembly of the rotating seat with the moving member can be achieved by rotating the rotating seat, and the connection or disassembly of the electric cylinder with the landing gear is further achieved without using a pin shaft for connection, thereby reducing the difficulty of the installation and disassembly process of the electric cylinder and the landing gear, reducing the labor intensity of the operator, and improving the maintenance and replacement efficiency of the landing gear.

[0050] As an optional embodiment, in one embodiment of the invention, see Figure 2 and Figure 5 As shown, the rotating seat 2 includes: two rings 21 and a rotating gear sleeve 22, the two rings 21 are arranged on the outside of the connecting member 1 along the circumferential direction and are rotatably connected thereto, the rotating gear sleeve 22 is arranged at the bottom of the connecting member 1 and is connected to the two rings 21, the rotating gear sleeve 22 and the two rings 21 rotate along the circumferential direction of the connecting member 1, the upper part of the two rings 21 is sleeved on the outside of the connecting member 1 and can rotate along the circumferential direction of the connecting member 1, and the lower part of the two rings 21 is connected to the rotating gear sleeve 22, which is used to fix the rotating gear sleeve 22 to the bottom of the connecting member 1. When the rings 21 rotate along the circumferential direction of the connecting member 1, the rotating gear sleeve 22 is further driven to rotate along the circumferential direction of the connecting member 1.

[0051] As an optional embodiment, in one embodiment of the invention, see Figure 3 and Figure 8 As shown, the side surface of the rotating gear sleeve 22 is provided with a plurality of first bolt holes 221 along the circumferential direction, and each of the first bolt holes 221 matches with the second bolt hole 211 provided on the collar 21. The side surface of the rotating gear sleeve 22 is provided with four first bolt holes 221 along the circumferential direction, and each of the collars 21 is provided with two second bolt holes 211 along the circumferential direction. Then, the two collars 21 are provided with a total of four second bolt holes 211 matching with the first bolt holes 221. A bolt is used to pass through one first bolt hole 221 and one second bolt hole 211 to fix the rotating gear sleeve 22 under the collar 21, thereby realizing the rotational connection between the rotating gear sleeve 22 and the bottom of the connecting member 1.

[0052] As an optional embodiment, in one embodiment of the invention, see Figure 3 As shown, a through hole 222 is provided in the middle of the rotating gear sleeve 22, and two tooth grooves 2221 are correspondingly provided on both sides of the through hole 222 for detachable connection with the moving member 3. The moving member 3 passes through the through hole 222, and the detachable connection between the moving member 3 and the two tooth grooves 2221 is achieved by rotating the rotating gear sleeve 22. The electric cylinder 5 is disassembled by disassembling the moving member 3, so that the installation and disassembly of the electric cylinder 5 and the landing gear 4 are simple, and the labor intensity is reduced.

[0053] As an optional embodiment, in one embodiment of the invention, see Figure 4 As shown, the moving member 3 is a tooth column 31, which is embedded in the through hole 222, and two groups of straight teeth 311 are correspondingly provided on both sides of the tooth column 31, and the two groups of straight teeth 311 are matched with the two tooth grooves 2221 respectively. When the rotating gear sleeve 22 rotates to the first position, see Figure 5 As shown, when the two groups of straight teeth 311 are located in the two tooth grooves 2221 and mesh with them, the tooth column 31 is connected to the middle of the rotating gear sleeve 22, further connecting the electric cylinder 5 to the landing gear; when the rotating gear sleeve 22 rotates to the second position, see Figure 6 As shown, when the two groups of straight teeth 311 are away from the two tooth grooves 2221, the tooth column 31 is disengaged and separated from the middle part of the rotating gear sleeve 22, and the electric cylinder 5 is further separated from the landing gear 4. This connection method replaces the pin connection, reduces the difficulty of the installation and disassembly process, and improves the maintenance and replacement efficiency of the landing gear 4.

[0054] As an optional embodiment, in one embodiment of the invention, see Figure 7 As shown, a plurality of third bolt holes 11 are provided above the connecting member 1 along the circumferential direction, and the plurality of third bolt holes 11 are used to connect with the landing gear 4. Bolts are passed through the third bolt holes 11 to connect the connecting member 1 with the bottom of the landing gear 4. The connecting member 1 is also used to be rotatably connected with the two collars 21 to further fix the rotating gear sleeve 22, the gear column 31 and the electric cylinder 5 to the bottom of the landing gear 4.

[0055] As an optional embodiment, in one embodiment of the invention, see Figure 2 and Figure 7 As shown, the connecting device between the electric cylinder and the landing gear also includes: a limiting component 6, which is arranged on one side of the rotating gear sleeve 22 and is used to cooperate with the cross-shaped groove 12 arranged at the bottom of the connecting member 1 to limit the rotation of the rotating gear sleeve 22, wherein a limiting hole 223 is provided on one side of the rotating gear sleeve 22, see Figure 3As shown, the limiting component 6 passes through the limiting hole 223 and is connected to the cross-shaped groove 12. When the limiting component 6 is located in the cross-shaped groove 12, the limiting component 6 prevents the rotating gear sleeve 22 from rotating. Only when the limiting component 6 is away from the cross-shaped groove 12 can the rotating gear sleeve 22 rotate. In addition, every two cross-shaped grooves 12 are spaced 90 degrees apart. Therefore, after the rotating gear sleeve 22 rotates 90 degrees, the limiting component 6 can be connected to the cross-shaped groove 12 to limit the rotation of the rotating gear sleeve 22.

[0056] As an optional embodiment, in one embodiment of the invention, see Figure 2 As shown, the limit assembly 6 includes: a limit pin 61, a handle 62 and a bracket 63. The limit pin 61 passes through the rotating gear sleeve 22 and is connected to the cross-shaped groove 12. The handle 62 is connected to the bottom of the limit pin 61 and extends to the outside of the rotating gear sleeve 22. One end of the bracket 63 is connected to the outside of the rotating gear sleeve 22, and the other end of the bracket 63 is connected to the middle of the handle 62. The handle 62 moves up and down around the bracket 63 and drives the limit pin 61 to move up and down. The bracket 63 is the fulcrum of the handle 62. The handle 62 is also fixedly connected to the outside of the rotating gear sleeve 22 through the bracket 63. When When the handle 62 is lifted upward, the handle 62 uses the lever principle to drive the limit pin 61 to move downward in the opposite direction, so that the limit pin 61 is away from the cross-shaped groove 12. Rotating the handle 62 can rotate the rotating gear sleeve 22 and the ring 21 to rotate along the circumferential direction of the connecting member 1; when the handle 62 is pressed downward, the handle 62 uses the lever principle to drive the limit pin 61 to move upward in the opposite direction, so that the limit pin 61 is located in the cross-shaped groove 12, and the handle 62 is locked and cannot rotate, so the rotating gear sleeve 22 and the ring 21 cannot rotate along the circumferential direction of the connecting member 1.

[0057] As an optional embodiment, in one embodiment of the invention, see Figure 1 and Fig.10 As shown, the bracket 63 includes two connection blocks 631 arranged at intervals, and the other ends of the two connection blocks 631 are respectively connected to the two sides of the handle 62, and the handle 62 is located between the two connection blocks 631. The pin shaft passes through the other ends of the two connection blocks 631 and the handle 62, and the other ends of the two connection blocks 631 are connected to the middle part of the handle 62, so that the bracket 63 forms a fulcrum in the middle part of the handle 62. The up and down movement of the handle 62 can drive the limit pin 61 to move in the opposite direction, thereby realizing the rotation restriction of the rotating gear sleeve 22.

[0058] As an optional embodiment, in one embodiment of the invention, see Figure 7and Fig. 9 As shown, the limit pin 61 is a cylindrical structure that is larger at the top and smaller at the bottom. The top end of the limit pin 61 matches the cross-shaped groove 12. The top end of the limit pin 61 is used to connect with the cross-shaped groove 12. The top circumferential size of the limit pin 61 is larger and matches the size of the cross-shaped groove 12, so that the top end of the limit pin 61 can be completely fixed in the cross-shaped groove 12, and the bottom end of the limit pin 61 is connected to the handle 62 through a pin shaft.

[0059] The working principle of the connection device between the electric cylinder and the landing gear in the embodiment of the present invention is as follows:

[0060] When the electric cylinder 5 and the landing gear 4 need to be disassembled, the handle 62 is lifted upward, and the handle 62 drives the limit pin 61 to move downward in the opposite direction away from the cross groove 12, so that the rotating gear sleeve 22 is unlocked, and the handle 62 is turned to rotate the rotating gear sleeve 22 and the collar 21 so that they rotate along the circumferential direction of the connecting member 1 until the tooth column 31 is away from the two tooth grooves 2221, and the tooth column 31 is disengaged and separated from the middle part of the rotating gear sleeve 22, so that the electric cylinder 5 is separated from the landing gear 4; when the electric cylinder 5 is connected to the landing gear 4, the handle 62 is lifted upward, and the handle 62 drives the limit pin 61 to move downward in the opposite direction. When the handle 62 is moved away from the cross groove 12, the gear sleeve 22 is unlocked, and the gear sleeve 22 and the collar 21 can be rotated to rotate along the circumferential direction of the connecting member 1 until the tooth column 31 is engaged with the two tooth grooves 2221, and the tooth column 31 is connected to the middle part of the gear sleeve 22, and the electric cylinder 5 is connected to the landing gear 4. Then, the handle 62 is pressed downward, and the handle 62 drives the limit pin 61 to move upward in the opposite direction, and the limit pin 61 is located in the cross groove 12. The handle 62 is locked and cannot be rotated, and the gear sleeve 22 and the collar 21 cannot rotate along the circumferential direction of the connecting member 1 either.

[0061] In the description of the present invention, it should be noted that the terms "upper", "lower", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0062] It should be noted that, in the present invention, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0063] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but should conform to the widest scope consistent with the principles and novel features of the present invention.

Claims

1. A connecting device between an electric cylinder and a landing gear, characterized in that: include: A connecting member (1), wherein the connecting member (1) is arranged at the bottom of the landing gear (4); A rotating seat (2), the rotating seat (2) being arranged at the bottom of the connecting member (1) and being rotatably connected thereto; A moving member (3), the moving member (3) being rotatably connected to the rotating seat (2), and the moving member (3) being also connected to the electric cylinder (5); When the rotating seat (2) rotates to a first position, the moving member (3) is connected to the rotating seat (2) so that the electric cylinder (5) is connected to the landing gear (4); when the rotating seat (2) rotates to a second position, the moving member (3) is separated from the rotating seat (2) so that the electric cylinder (5) is separated from the landing gear (4).

2. The connecting device between the electric cylinder and the landing gear according to claim 1, characterized in that: The rotating seat (2) comprises: Two collars (21), the two collars (21) being arranged outside the connecting member (1) along the circumferential direction and being rotatably connected thereto; A rotating gear sleeve (22), the rotating gear sleeve (22) is arranged at the bottom of the connecting member (1) and is connected to the two sleeve rings (21), and the rotating gear sleeve (22) and the two sleeve rings (21) rotate along the circumferential direction of the connecting member (1).

3. The connecting device of the electric cylinder and the landing gear according to claim 2, characterized in that: A plurality of first bolt holes (221) are provided on the side surface of the rotating gear sleeve (22) along the circumferential direction, and each of the first bolt holes (221) matches a second bolt hole (211) provided on the collar (21).

4. The connecting device of the electric cylinder and the landing gear according to claim 3, characterized in that: A through hole (222) is provided in the middle of the rotating gear sleeve (22), and two tooth grooves (2221) are correspondingly provided on both sides of the through hole (222) for detachably connecting with the moving member (3).

5. The connecting device of the electric cylinder and the landing gear according to claim 4, characterized in that: The moving part (3) is a tooth column (31), the tooth column (31) is embedded in the through hole (222), and two groups of straight teeth (311) are correspondingly provided on both sides of the tooth column (31), and the two groups of straight teeth (311) are matched with the two tooth grooves (2221) respectively.

6. The connecting device of the electric cylinder and the landing gear according to claim 5, characterized in that: A plurality of third bolt holes (11) are provided above the connecting member (1) along a circumferential direction, and the plurality of third bolt holes (11) are used for connecting with the landing gear (4).

7. The connecting device between the electric cylinder and the landing gear according to claim 6, characterized in that: Also includes: A limit assembly (6), wherein the limit assembly (6) is arranged on one side of the rotating gear sleeve (22) and is used to cooperate with a cross-shaped groove (12) arranged at the bottom of the connecting member (1) to limit the rotation of the rotating gear sleeve (22).

8. The connecting device between the electric cylinder and the landing gear according to claim 7, characterized in that: The limiting component (6) comprises: A limit pin (61), wherein the limit pin (61) passes through the rotating gear sleeve (22) and is connected to the cross-shaped groove (12); A handle (62), the handle (62) being connected to the bottom of the limiting pin (61) and extending to the outside of the rotating gear sleeve (22); A bracket (63), one end of the bracket (63) is connected to the outside of the rotating gear sleeve (22), and the other end of the bracket (63) is connected to the middle of the handle (62). The handle (62) moves up and down around the bracket (63) and drives the limit pin (61) to move up and down.

9. The connecting device of the electric cylinder and the landing gear according to claim 8, characterized in that: The bracket (63) comprises two connection blocks (631) arranged at an interval, and the other ends of the two connection blocks (631) are respectively connected to two sides of the handle (62).

10. The connecting device of the electric cylinder and the landing gear according to claim 8, characterized in that: The limiting pin (61) is a cylindrical structure that is larger at the top and smaller at the bottom, and the top end of the limiting pin (61) matches the cross-shaped groove (12).

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