Anti-falling fixing pin mechanism

Abstract

The utility model discloses an anti-drop fixing pin mechanism, which relates to the technical field of fixing pins and comprises a mounting part, a limit connecting rod is hinged to the top of the mounting part through a pin shaft, a mounting frame is arranged at the top of one end, far away from the mounting part, of the limit connecting rod, and a bolt is arranged between the mounting frame and the limit connecting rod. The bottom of the bolt is in threaded connection with a nut, one side of the nut is provided with an anti-falling assembly, the anti-falling assembly comprises a fixed sliding sleeve, the top of the fixed sliding sleeve is fixedly connected with the bottom of a limiting connecting rod, and a plurality of limiting grooves are formed in the peripheral side of the nut. According to the scheme, by arranging the anti-falling assembly, when the nut is screwed to a proper position, a worker loosens the pull rod and relieves limiting of the limiting rod, a reset spring drives the limiting rod to move through a limiting plate, the limiting rod and a limiting groove in the peripheral side of the nut are mutually clamped, and the nut can be limited and stabilized to a certain degree; and slippage caused by long-time use of the nut is avoided, and the service life of the limiter is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of fixing pins, and more particularly to an anti-falling fixing pin mechanism. Background Art

[0002] During the opening and closing process of the protective doors of some equipment, due to the need for the opening and closing degree of the protective doors and to prevent the protective doors from being suddenly closed when subjected to forces such as wind loads and impact loads, it is often necessary to use a limiter to limit the opening degree of the doors.

[0003] The utility model of Chinese patent application number: CN201921277626.1 discloses a side door limiter, comprising a first limit arm, a second limit arm, a limit arm bracket and a limit arm handle, wherein the first end of the first limit arm is installed with a first hinge shaft, the second end of the first limit arm is hinged to the first end of the second limit arm through the limit arm hinge shaft, and the second end of the second limit arm is installed with a second hinge shaft; the second end of the first limit arm is fixedly installed with the limit arm bracket; the limit arm handle is hinged to the limit arm bracket through a fourth hinge shaft. The frame is mounted on the fourth hinge shaft, and a torsion spring is installed on the fourth hinge shaft to return the limit arm, and the fourth hinge shaft is perpendicular to the first hinge shaft; the limit arm handle is provided with a limit plate that can extend into the space between the first limit arm and the second limit arm. The utility model can allow the side door to stay in the set position, thereby preventing the side door from closing suddenly and causing harm to the people in the cabin, greatly improving the safety performance. However, in actual use, the limiter fixing pin bolt is easy to loosen and fall off due to frequent opening and closing of the door, which affects the service life of the limiter. Utility Model Content

[0004] The utility model aims to provide an anti-falling fixing pin mechanism, which can realize the function of preventing the fixing pin bolt of the limiter from being loosened and falling off.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions: an anti-falling fixing pin mechanism, comprising: a mounting member, a limit connecting rod hingedly connected to the top of the mounting member through a pin shaft, a mounting bracket provided on the top of the limit connecting rod away from the mounting member, a bolt provided between the mounting bracket and the limit connecting rod, a nut threadedly connected to the bottom of the bolt, and an anti-falling component provided on one side of the nut;

[0006] The anti-falling component includes a fixed sleeve, the top of the fixed sleeve is fixedly connected to the bottom of the limiting connecting rod, a plurality of limiting grooves are provided on the outer peripheral side of the nut, and the plurality of limiting grooves are distributed in an equiangular circular array along the axis of the nut, and the limiting rod and the limiting grooves are clamped with each other.

[0007] Furthermore, a return spring is fixedly connected to the outer surface of the limit rod, and two ends of the return spring are fixedly connected to one side of the limit plate and one side of the fixed sleeve respectively.

[0008] Furthermore, one end of the limiting rod away from the limiting groove is fixedly connected to a pull rod, and an outer surface of the pull rod is provided with anti-slip textures.

[0009] Furthermore, a sliding groove is provided at the bottom of the mounting frame, a sliding ring is slidably connected in the sliding groove, the bolt is rotatably connected to the sliding ring, and an adjustment component is provided on the top of the sliding ring.

[0010] Furthermore, the adjustment assembly includes a connecting block, the bottom of which is fixedly connected to the top of the sliding ring, a circular hole is provided on the top of the connecting block, and the circular hole is rotatably connected to the bolt, one side of the connecting block is fixedly connected to a threaded sleeve, and one side of the threaded sleeve is threadedly connected to a threaded rod.

[0011] Furthermore, one end of the threaded rod away from the threaded sleeve is fixedly connected to a connecting rod, and the other end of the connecting rod is fixedly connected to a clamping block. A plurality of clamping slots are provided on one side of the mounting member, and the clamping blocks and the clamping slots are clamped to each other.

[0012] Compared with the existing technology, the beneficial effects of this solution are as follows:

[0013] 1. This solution sets up an anti-falling component. When the nut is screwed to the appropriate position, the staff loosens the pull rod and releases the limit on the limit rod. The reset spring drives the limit rod to move through the limit plate, so that the limit rod and the limit groove on the outer side of the nut are engaged with each other, which can limit and stabilize the nut to a certain extent, avoid the nut from slipping due to long-term use, and improve the service life of the limiter.

[0014] 2. This solution sets an adjustment component. The threaded rod drives the connecting rod to move under the action of the threaded sleeve. The connecting rod drives the card block and makes the card block gradually enter the card slot. By controlling the depth of the card block entering the card slot, the resistance encountered when the card block moves can be adjusted, thereby adjusting the limiting force on the external equipment and keeping the door fixed in a certain open position, avoiding factors such as wind blowing that cause the door to close, thereby improving the flexibility of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of a three-dimensional structure for embodying the present utility model;

[0016] Figure 2 It is a schematic diagram of a three-dimensional split structure for embodying the present utility model;

[0017] Figure 3 For the purpose of embodying the present utility model Figure 2 A schematic diagram of the enlarged structure of part A;

[0018] Figure 4 It is a schematic diagram of the three-dimensional structure of the adjustment component of the utility model.

[0019] In the picture:

[0020] 1. Mounting part; 2. Limit connecting rod; 3. Anti-falling assembly; 301. Return spring; 302. Limiting groove; 303. Limiting rod; 304. Limiting plate; 305. Fixed sliding sleeve; 4. Bolt; 5. Nut; 6. Sliding groove; 7. Mounting frame; 8. Sliding ring; 9. Adjustment assembly; 901. Connecting block; 902. Clamping slot; 903. Threaded sleeve; 904. Threaded rod; 905. Connecting rod; 906. Clamping block. DETAILED DESCRIPTION

[0021] The utility model will be further described in detail below with reference to the accompanying drawings and through specific embodiments. The following embodiments are merely illustrative and do not limit the scope of protection of the utility model.

[0022] Example 1

[0023] An anti-falling fixing pin mechanism, such as Figures 1-4 As shown, it includes a mounting part 1, the top of the mounting part 1 is hinged to a limit link 2 through a pin shaft, a mounting bracket 7 is provided on the top of the limit link 2 away from the mounting part 1, a bolt 4 is provided between the mounting bracket 7 and the limit link 2, a nut 5 is threadedly connected to the bottom of the bolt 4, and an anti-fall-off component 3 is provided on one side of the nut 5;

[0024] The anti-falling component 3 includes a fixed sleeve 305, the top of the fixed sleeve 305 is fixedly connected to the bottom of the limiting link 2, a plurality of limiting grooves 302 are provided on the outer peripheral side of the nut 5, and the plurality of limiting grooves 302 are distributed in an equiangular circular array along the axis of the nut 5, the limiting rod 303 and the limiting groove 302 are mutually engaged, and a reset spring 301 is fixedly connected to the outer surface of the limiting rod 303, and the two ends of the reset spring 301 are respectively fixedly connected to one side of the limiting plate 304 and one side of the fixed sleeve 305, and the end of the limiting rod 303 away from the limiting groove 302 is fixedly connected to a pull rod, and the outer surface of the pull rod is provided with anti-slip textures.

[0025] In actual application, by setting the anti-falling component 3, when the nut 5 is screwed to the appropriate position, the staff loosens the pull rod and releases the limit on the limit rod 303, and the reset spring 301 drives the limit rod 303 to move through the limit plate 304, so that the limit rod 303 and the limit groove 302 on the outer peripheral side of the nut 5 are mutually engaged, which can limit and stabilize the nut 5 to a certain extent, avoid the nut 5 from slipping due to long-term use, and improve the service life of the limiter.

[0026] Example 2

[0027] An anti-drop fixing pin mechanism, which is different from embodiments 1 and 3 in that Figure 1 、 Figure 2 and Figure 4 As shown, a sliding groove 6 is provided at the bottom of the mounting frame 7, and a sliding ring 8 is slidably connected in the sliding groove 6. The bolt 4 is rotatably connected to the sliding ring 8. An adjustment component 9 is provided on the top of the sliding ring 8. The adjustment component 9 includes a connecting block 901. The bottom of the connecting block 901 is fixedly connected to the top of the sliding ring 8. A circular hole is clamped on the top of the connecting block 901, and the circular hole is rotatably connected to the bolt 4. A threaded sleeve 903 is fixedly connected to one side of the connecting block 901, and a threaded rod 904 is threadedly connected to one side of the threaded sleeve 903. The end of the threaded rod 904 away from the threaded sleeve 903 is fixedly connected to a connecting rod 905, and the other end of the connecting rod 905 is fixedly connected to a clamping block 906. A plurality of clamping grooves 902 are provided on one side of the mounting member 1, and the clamping block 906 and the clamping groove 902 are clamped with each other.

[0028] In actual application, by setting the adjustment component 9, the threaded rod 904 drives the connecting rod 905 to move under the action of the threaded sleeve 903, and the connecting rod 905 drives the block 906 and makes the block 906 gradually enter the slot 902. By controlling the depth of the block 906 entering the slot 902, the resistance encountered by the block 906 when moving can be adjusted, thereby adjusting the limiting force on the external device, and the door can be kept fixed in a certain open position to avoid factors such as wind blowing that cause the door to close, thereby improving the flexibility of the device.

[0029] Working principle: When in use, the staff will fix the mounting piece 1 and the mounting bracket 7 to the external equipment respectively, and then the staff will adjust the circular hole of the connecting block 901, the sliding ring 8 and the mounting hole on one side of the limit link 2 to the same axis. The staff will pass the bolt 4 through the circular hole, the sliding ring 8 and the mounting hole on one side of the limit link 2. After that, the staff will thread the nut 5 to the bolt 4. When the nut 5 is screwed to the appropriate position, the staff will loosen the pull rod to release the limit on the limit rod 303. At this time, the reset spring 301 drives the limit plate 304 to move, and the limit The positioning plate 304 drives the limit rod 303 to move, and makes the limit rod 303 and the limit groove 302 on the outer peripheral side of the nut 5 engage with each other. At the same time, when the external equipment is pulled open, the staff can adjust the limit force as needed. The staff rotates the threaded rod 904, and the threaded rod 904 moves under the action of the threaded sleeve 903, so that the threaded rod 904 drives the connecting rod 905 to move, and the connecting rod 905 drives the clamping block 906 to move, so that the clamping block 906 gradually enters the clamping groove 902, which can control the movement resistance of the clamping block 906 and adjust the limit force on the external equipment.

[0030] This specific embodiment is merely an explanation of the present invention and does not limit the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. An anti-falling fixing pin mechanism, characterized in that: include: A mounting member (1), wherein the top of the mounting member (1) is hingedly connected to a limit connecting rod (2) via a pin shaft, a mounting bracket (7) is provided on the top of one end of the limit connecting rod (2) away from the mounting member (1), a bolt (4) is provided between the mounting bracket (7) and the limit connecting rod (2), a nut (5) is threadedly connected to the bottom of the bolt (4), and an anti-fall-off component (3) is provided on one side of the nut (5); The anti-fall-off assembly (3) comprises a fixed sleeve (305), the top of the fixed sleeve (305) is fixedly connected to the bottom of the limiting connecting rod (2), the fixed sleeve (305) is slidably connected to the limiting rod (303), a plurality of limiting grooves (302) are provided on the outer peripheral side of the nut (5), and the plurality of limiting grooves (302) are distributed in an equiangular circular array along the axis of the nut (5), and the limiting rod (303) and the limiting groove (302) are mutually engaged.

2. The anti-fall-off fixing pin mechanism according to claim 1, characterized in that: A return spring (301) is fixedly connected to the outer surface of the limit rod (303), and two ends of the return spring (301) are respectively fixedly connected to one side of the limit plate (304) and one side of the fixed sleeve (305).

3. The anti-fall-off fixing pin mechanism according to claim 2, characterized in that: One end of the limiting rod (303) away from the limiting groove (302) is fixedly connected to a pull rod, and the outer surface of the pull rod is provided with anti-slip lines.

4. The anti-fall-off fixing pin mechanism according to claim 3, characterized in that: A sliding groove (6) is provided at the bottom of the mounting frame (7), a sliding ring (8) is slidably connected in the sliding groove (6), the bolt (4) is rotatably connected to the sliding ring (8), and an adjustment component (9) is provided on the top of the sliding ring (8).

5. The anti-fall-off fixing pin mechanism according to claim 4, characterized in that: The adjustment assembly (9) includes a connecting block (901), the bottom of the connecting block (901) is fixedly connected to the top of the sliding ring (8), the top of the connecting block (901) is provided with a circular hole, and the circular hole is rotatably connected to the bolt (4), one side of the connecting block (901) is fixedly connected to a threaded sleeve (903), and one side of the threaded sleeve (903) is threadedly connected to a threaded rod (904).

6. The anti-fall-off fixing pin mechanism according to claim 5, characterized in that: One end of the threaded rod (904) away from the threaded sleeve (903) is fixedly connected to a connecting rod (905), and the other end of the connecting rod (905) is fixedly connected to a clamping block (906). A plurality of clamping slots (902) are provided on one side of the mounting member (1), and the clamping block (906) and the clamping slots (902) are clamped to each other.

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