Pin shaft fixing device of door leaf framework structure

Abstract

The utility model provides a pin shaft fixing device of a door leaf framework structure, and relates to the field of pin shaft fixing. The pin shaft fixing device of the door leaf framework structure comprises a pin shaft body and a pin hole, a connecting rod is detachably connected to the interior of the pin hole, a block body is fixedly connected to one end of the connecting rod, a two-way lead screw is rotatably connected to the interior of the block body, and two sliding blocks are symmetrically connected to the outer wall of the two-way lead screw in a threaded mode; one ends of the two inclined rods are rotationally connected with one sides of the two sliding blocks correspondingly, a plurality of protruding blocks are slidably connected into the connecting rod, one end of each protruding block extends to the outer portion of the connecting rod and makes contact with the inner wall of the pin hole, and the end, away from the pin hole, of each protruding block is fixedly connected with the outer wall of the corresponding inclined rod. The sliding block drives the inclined rod to rotate, the inclined rod extrudes the spring, meanwhile, under the elastic force of the spring, the protruding block can make contact with the inner wall of the pin hole, and locking of the pin shaft body is achieved.

Description

Technical Field

[0001] The utility model relates to a pin fixing device, in particular to a pin fixing device of a door leaf skeleton structure, belonging to the technical field of pin fixing. Background Art

[0002] The door frame is a support used to support the structure, foundation or outline of something. The pin is a standardized fastener that can be used for static fixed connection or relative movement with the connected parts. It is mainly used at the hinge of two parts to form a hinge connection. In the door frame structure, the pin is usually used for dynamic connection, and the pin is usually locked with a cotter pin to fix it.

[0003] The existing patent application number: CN202121742517.X discloses a pin fixing device for a tower crane, including a pin, a fixing block is slidably connected to the outer front end of the pin, and the fixing blocks are rotatably connected to the fixing plates on both sides of the fixing block, the fixing plate located at the left end is fixedly connected to the fixing rod on the rear side of the right end of the fixing plate, and the fixing plate located at the right end is spirally connected to the screw, the lower end of the fixing plate is fixedly connected to the anti-sliding block, and the inner side of the fixing plate is slidably connected to the supporting block. This patent places the fixing block and the fixing plate on the groove on the pin by setting the fixing plate, the fixing block, the screw and the fixing rod, and manually rotates the fixing plate to insert the fixing rod into the fixing plate at the right end, so that the two fixing plates form a circle. At this time, the fixing rod and the fixing plate at the right end are fixed together by the screws, and the contact area between the pin and the equipment is increased by the setting of the fixing plate to improve the stability, thereby preventing the pin from being displaced on the tower crane.

[0004] The pin in this patent is locked by a cotter pin. When the structure at the pin connection needs to be disassembled, the cotter pin needs to be manually straightened before the pin can be removed. At the same time, when the pin needs to be locked, the cotter pin also needs to be manually bent, which is time-consuming and laborious. Therefore, we propose a pin fixing device for the door leaf skeleton structure. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] The purpose of the utility model is to provide a pin fixing device for a door leaf skeleton structure in order to solve the above-mentioned problem, so as to solve the problem of laborious pin removal in the prior art.

[0007] (II) Technical solution

[0008] The utility model is implemented through the following technical scheme: a pin fixing device for a door leaf skeleton structure, comprising a pin body and a pin hole, the interior of the pin hole is detachably connected to a connecting rod, one end of the connecting rod is fixedly connected to a block, the interior of the block is rotatably connected to a bidirectional screw rod, the outer wall of the bidirectional screw rod is symmetrically threadedly connected to two sliders, a fixing component is arranged inside the connecting rod, and the fixing component comprises two oblique rods, one end of the two oblique rods is respectively rotatably connected to one side of the two sliders, a plurality of protrusions are slidably connected to the interior of the connecting rod, one end of each of the protrusions extends to the outside of the connecting rod and is in contact with the inner wall of the pin hole. The end of each protrusion away from the pin hole is fixedly connected to the outer wall of the corresponding inclined rod. By pulling the cross rod, the cross rod drives the rack to slide, the rack drives the gear to rotate, the gear drives the two-way screw to rotate, the two-way screw drives the slider to slide, the slider drives the inclined rod to rotate, and the inclined rod drives the protrusion to move, so that the protrusion can contact the inner wall of the pin hole, thereby locking the pin shaft body. Conversely, by pulling the cross rod in the opposite direction, the rack drives the gear to rotate in the opposite direction, the two-way screw drives the slider to approach each other, the slider drives the inclined rod to approach each other, and the inclined rod squeezes the spring, so that the protrusion can be separated from the inner wall of the pin hole, that is, the protrusion is retracted into the interior of the connecting rod, thereby realizing the disassembly of the pin shaft connecting piece.

[0009] Preferably, a plurality of springs are fixedly connected between the two oblique rods, and one end of the two oblique rods away from the two sliders extends to the outside of the pin hole. Through the elastic force of the springs, the oblique rods can approach or separate from each other, so that the protrusion contacts the inner wall of the pin hole, thereby locking or disassembling the pin shaft body.

[0010] Preferably, a cross bar is slidably connected inside the block, and a rack is fixedly connected to one side of the cross bar.

[0011] Preferably, a gear is fixedly connected to the outer wall of the bidirectional screw rod, and the rack is meshingly connected to the gear. By pulling the cross bar, the cross bar drives the rack to slide left and right, the rack drives the gear to rotate, and the gear drives the bidirectional screw rod to rotate, thereby realizing a detachable connection between the connecting rod and the pin hole.

[0012] Preferably, two slots are provided on one side of the pin shaft body, and two blocks are fixedly connected to one side of the block body, and both blocks extend into the corresponding slots. The connection between the block body and the pin shaft body is achieved by inserting the connecting rod into the pin hole and then engaging the block with the slot.

[0013] Preferably, two slide rails are fixedly connected inside the block, and two connecting blocks are symmetrically fixedly connected to the outer wall of the rack, and the rack is limited by sliding the connecting blocks on the slide rails.

[0014] Preferably, one end of the cross bar away from the rack extends to the outside of the block, and the two connecting blocks are slidably connected to the corresponding slide rails.

[0015] The utility model provides a pin fixing device for a door leaf frame structure, which has the following beneficial effects:

[0016] 1. The slider is driven to slide by the bidirectional screw, and the slider drives the inclined rod to rotate. The inclined rod squeezes the spring. At the same time, under the elastic force of the spring, the protrusion can contact the inner wall of the pin hole to lock the pin shaft body. Conversely, by rotating the bidirectional screw in the opposite direction, the slider drives the inclined rod to rotate, so that the protrusion can be separated from the inside of the pin hole until the protrusion is retracted into the inside of the connecting rod.

[0017] 2. By pulling the cross bar, the cross bar drives the rack to slide, the rack drives the gear to rotate, the gear drives the two-way screw to rotate, the two-way screw drives the slider to slide, the slider drives the inclined rod to rotate, and the inclined rod drives the protrusion to move, so that the protrusion can contact the inner wall of the pin hole to achieve locking of the pin shaft body. When locking is not required, the cross bar is pulled in the opposite direction, the rack drives the gear to rotate in the opposite direction, the two-way screw drives the slider to approach each other, the slider drives the inclined rod to approach each other, and the inclined rod squeezes the spring so that the protrusion can be separated from the inner wall of the pin hole, that is, the protrusion is retracted into the inside of the connecting rod to achieve disassembly of the pin shaft, the cross bar drives the rack to slide left and right, the rack drives the gear to rotate, and the gear drives the two-way screw to rotate. Under the rotation of the two-way screw, the detachable connection between the connecting rod and the pin hole is achieved.

[0018] 3. The connecting block slides on the slide rail, and the internal sliding connection of the connecting rod is provided with a plurality of protrusions, one end of each protrusion extends to the outside of the connecting rod and contacts the inner wall of the pin hole, and the end of each protrusion away from the pin hole is fixedly connected to the outer wall of the corresponding inclined rod, and a plurality of springs are fixedly connected between the two inclined rods. The slider is driven to slide by the bidirectional screw rod, and the slider drives the inclined rod to rotate, and the inclined rod squeezes the spring. At the same time, under the elastic force of the spring, the protrusion can contact the inner wall of the pin hole, thereby locking the pin shaft body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0021] Figure 3 For this utility model Figure 2 The enlarged schematic diagram of point A in the middle;

[0022] Figure 4 For this utility model Figure 2 A magnified schematic diagram of point B in the middle.

[0023]

Main component symbol description

[0024] 1. Pin shaft body; 2. Pin hole; 3. Connecting rod; 4. Block; 5. Bidirectional screw rod; 6. Sliding block; 7. Fixing assembly; 71. Oblique rod; 72. Bump; 73. Spring; 8. Block; 9. Slot; 10. Gear; 11. Cross bar; 12. Rack; 13. Slide rail; 14. Connecting block. DETAILED DESCRIPTION

[0025] See also Figure 1-Figure 4 The embodiment of the utility model provides a pin fixing device for a door leaf skeleton structure, including a pin body 1 and a pin hole 2, the pin hole 2 is detachably connected with a connecting rod 3, one end of the connecting rod 3 is fixedly connected with a block 4, the block 4 is rotatably connected with a bidirectional screw rod 5, the outer wall of the bidirectional screw rod 5 is symmetrically threaded with two sliders 6, a fixing assembly 7 is arranged inside the connecting rod 3, the fixing assembly 7 includes two oblique rods 71, one end of the two oblique rods 71 ​​is rotatably connected with one side of the two sliders 6, a plurality of protrusions 72 are slidably connected inside the connecting rod 3, one end of each protrusion 72 extends to the outside of the connecting rod 3 and contacts with the inner wall of the pin hole 2, and the end of each protrusion 72 away from the pin hole 2 is fixedly connected with the outer wall of the corresponding oblique rod 71, a plurality of springs 73 are fixedly connected between the two oblique rods 71, and the two-way screw rod 5 is driven by the two-way screw rod 5. The movable slider 6 slides, and the slider 6 drives the inclined rod 71 to rotate. The inclined rod 71 squeezes the spring 73. At the same time, under the elastic force of the spring 73, the protrusion 72 can contact the inner wall of the pin hole 2 to achieve the locking of the pin shaft body 1; the two inclined rods 71 ​​extend to the outside of the pin hole 2 at one end away from the two sliders 6, and the inside of the block 4 is slidably connected with a cross bar 11, and one side of the cross bar 11 is fixedly connected with a rack 12. The outer wall of the two-way screw rod 5 is fixedly connected with a gear 10, and the rack 12 is meshed with the gear 10. By pulling the cross bar 11, the cross bar 11 drives the rack 12 to slide left and right, and the rack 12 drives the gear 10 to rotate, and the gear 10 drives the two-way screw rod 5 to rotate, thereby realizing the detachable connection between the connecting rod 3 and the pin hole 2; the end of the cross bar 11 away from the rack 12 extends to the outside of the block 4, and the two connecting blocks 14 are slidably connected with the corresponding slide rails 13.

[0026] Furthermore, two slots 9 are provided on one side of the pin shaft body 1, and two blocks 8 are fixedly connected to one side of the block body 4. The two blocks 8 extend to the inside of the corresponding slots 9, and the block body 4 is connected to the pin shaft body 1 by engaging with the blocks 8 and the slots 9; two slide rails 13 are fixedly connected to the inside of the block body 4, and two connecting blocks 14 are symmetrically fixedly connected to the outer wall of the rack 12.

[0027] Working principle: the staff first inserts the connecting rod 3 into the pin hole 2, and then engages the block 8 with the slot 9 to realize the connection between the block 4 and the pin shaft body 1, pulls the cross bar 11, the cross bar 11 drives the rack 12 to slide, the rack 12 drives the gear 10 to rotate, the gear 10 drives the two-way screw rod 5 to rotate, the two-way screw rod 5 drives the slider 6 to slide, the slider 6 drives the inclined rod 71 to rotate, the inclined rod 71 drives the protrusion 72 to move, so that the protrusion 72 can contact the inner wall of the pin hole 2 to achieve the locking of the pin shaft body 1. When locking is not needed, the cross bar 11 is pulled in the opposite direction, the rack 12 drives the gear 10 to rotate in the opposite direction, the two-way screw rod 5 drives the slider 6 to approach each other, the slider 6 drives the inclined rod 71 to approach each other, and the inclined rod 71 squeezes the spring 73, so that the protrusion 72 can be separated from the inner wall of the pin hole 2, that is, the protrusion 72 is retracted into the inside of the connecting rod 3 to achieve the disassembly of the pin shaft.

[0028] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A pin fixing device for a door frame structure, comprising a pin body (1) and a pin hole (2), characterized in that: The pin hole (2) is detachably connected to a connecting rod (3), one end of which is fixedly connected to a block (4), the block (4) is rotatably connected to a bidirectional screw rod (5), the outer wall of which is symmetrically threaded with two sliders (6), a fixing assembly (7) is provided inside the connecting rod (3), the fixing assembly (7) comprises two inclined rods (71), one end of each of which is rotatably connected to one side of the two sliders (6), a plurality of protrusions (72) are slidably connected inside the connecting rod (3), one end of each of which extends to the outside of the connecting rod (3) and contacts the inner wall of the pin hole (2), and the end of each of which is away from the pin hole (2) is fixedly connected to the outer wall of the corresponding inclined rod (71).

2. The pin fixing device for a door leaf frame structure according to claim 1, characterized in that: A plurality of springs (73) are fixedly connected between the two oblique rods (71), and one end of the two oblique rods (71) away from the two sliders (6) both extend to the outside of the pin hole (2).

3. The pin fixing device for a door leaf frame structure according to claim 1, characterized in that: A cross bar (11) is slidably connected inside the block (4), and a rack (12) is fixedly connected to one side of the cross bar (11).

4. The pin fixing device for a door leaf frame structure according to claim 3, characterized in that: The outer wall of the bidirectional screw rod (5) is fixedly connected with a gear (10), and the rack (12) is meshingly connected with the gear (10).

5. The pin fixing device for a door leaf frame structure according to claim 1, characterized in that: Two slots (9) are provided on one side of the pin shaft body (1), and two blocks (8) are fixedly connected to one side of the block body (4), and both blocks (8) extend into the interior of the corresponding slots (9).

6. The pin fixing device for a door leaf frame structure according to claim 3, characterized in that: Two slide rails (13) are fixedly connected inside the block (4), and two connecting blocks (14) are symmetrically fixedly connected to the outer wall of the rack (12).

7. The pin fixing device for a door leaf frame structure according to claim 6, characterized in that: One end of the cross bar (11) away from the rack (12) extends to the outside of the block (4), and the two connecting blocks (14) are slidably connected to the corresponding slide rails (13).

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