Shaft pin type air door locking device

Abstract

The utility model relates to the field of air door locking devices, and discloses a shaft pin type air door locking device which comprises a supporting plate, two fixing plates are fixedly connected to the supporting plate, two sliding sleeves are connected to the supporting plate in a sliding mode, the two fixing plates are connected with the two sliding sleeves in a one-to-one correspondence mode through reset pieces, and self-locking assemblies are arranged on the fixing plates. Limiting holes are formed in the side walls of the ends, away from the fixing plates, of the sliding sleeves, and when one sliding sleeve moves away from or close to one fixing plate, the self-locking assembly on one fixing plate can be driven to be connected with or disconnected from the limiting hole in the other sliding sleeve. The ends, away from the corresponding fixing plates, of the sliding sleeves are fixedly connected with one ends of connecting ropes, and the other ends of the connecting ropes are used for being connected with air doors. In the working process, the sliding sleeve is only subjected to the restoring force of the reset piece, the blocking phenomenon is avoided, and the user experience feeling is improved.

Description

Technical Field

[0001] The utility model relates to the field of air door locking devices, in particular to a pin-type air door locking device. Background Technique

[0002] In coal mine operations, opening air doors simultaneously will disrupt the normal ventilation system, leading to problems such as air flow short-circuiting, air flow disorder, no air in local areas or gas accumulation, and further causing major mine accidents. For the safety of the mine, it is necessary to solve the problem of adjacent air doors being opened simultaneously.

[0003] The patent with the publication number CN103696796A discloses a mechanical automatic locking device for coal mine air doors. The self-locking pin in the shape of a circular sector is arranged between two solid weights. The solid weights are lifted by the traction of the connecting rope connected through the air door connecting rod. During the lifting process of the solid weights, the self-locking pin turns above the solid weight connected to the connecting rod of the other air door and locks it, preventing the other air door from being opened. When the air door is closed, the solid weights freely fall, and the self-locking pin cancels the locking effect on the solid weights of the other air door, and the other air door can be opened. When the two air doors are in the closed state, the upper ends of the two solid weights connected by the connecting rope are on the same horizontal plane. Since the self-locking pin is in the shape of a circular sector, its specific shape results in the weight of the upper end being greater than that of the lower end. In the natural state, the self-locking pin cannot achieve balance and will deflect to one side, resulting in a jamming phenomenon due to uneven force during the rising process of the solid weight on that side, thereby reducing the user experience.

[0004] In view of this, in the process of preventing adjacent two air doors from being opened simultaneously, how to achieve uniform force on the reset structure, avoid jamming, and improve the user experience has become a technical problem that needs to be urgently solved by those skilled in the art. Content of the Utility Model

[0005] The utility model aims to provide a pin-type air door locking device to overcome the above deficiencies.

[0006] In order to achieve the above object, the technical solution of the utility model is as follows:

[0007] A shaft pin type air door locking device, comprising: a support plate, on which two fixed plates are fixedly connected and two sliding sleeves are slidably connected. The two fixed plates are respectively connected to the two sliding sleeves in one-to-one correspondence through a reset member. A self-locking assembly is arranged on the fixed plate. A limiting hole is arranged on the side wall of one end of the sliding sleeve away from the fixed plate. When one of the sliding sleeves moves away from or close to one of the fixed plates, it can drive the self-locking assembly on one of the fixed plates to be connected to or disconnected from the limiting hole on the other sliding sleeve. One end of a connecting rope is fixedly connected to each end of the sliding sleeve away from the corresponding fixed plate, and the other end of the connecting rope is used to connect to the air door.

[0008] Further, a fixed sleeve is fixedly connected to the fixed plate, and the fixed sleeve is used for the sliding of the self-locking assembly.

[0009] Further, an opening is arranged at one end of the sliding sleeve close to the fixed plate. One end of the reset member passes through the opening and is connected to the sliding sleeve, and the other end of the reset member is connected to the side wall of the fixed sleeve.

[0010] Further, the self-locking assembly includes a reset block, a limiting spring and a locking pin. The middle and one end of the locking pin are respectively fixedly connected to the reset block and one end of the limiting spring. The other end of the limiting spring is fixedly connected to the fixed plate. The other end of the locking pin passes through the fixed sleeve. When one of the sliding sleeves moves away from or close to one of the fixed plates, it can drive the locking pin on one of the fixed plates to be connected to or disconnected from the limiting hole on the other sliding sleeve. The reset block on one of the fixed plates is slidably connected to one of the sliding sleeves.

[0011] Further, both ends of the sliding sleeve contract along the direction close to the axis, and a partition plate is fixedly arranged on the side wall of the sliding sleeve close to the fixed plate. The partition plate is slidably connected to the reset block.

[0012] Further, a limiting assembly is fixedly connected to the support plate. The limiting assembly and the fixed plate are arranged opposite to each other and are used for the sliding of the sliding sleeve.

[0013] Further, the limiting assembly includes two limiting plates and two limiting rods. The two limiting plates are arranged in parallel and are arranged opposite to the fixed plate. The limiting plates are used for the sliding of the sliding sleeve. Two limiting rods are horizontally fixedly connected between the two limiting plates, and the upper end of the support plate is fixedly connected to the limiting plates.

[0014] Further, a "T"-shaped sliding block is arranged on the side wall of the sliding sleeve, and the sliding block is slidably connected between the adjacent limiting rods.

[0015] Further, a lifting ring is fixedly connected to the outer side of one end of the sliding sleeve away from the fixed plate for fixedly connecting with one end of the connecting rope.

[0016] Further, the support plate is provided with a fixing hole.

[0017] Compared with the prior art, the utility model has at least the following advantages: during use, when the connecting rope pulls one of the sliding sleeves to slide, it can drive the self-locking component on the corresponding fixed plate to connect or disconnect the limiting hole of the other sliding sleeve, thereby avoiding the phenomenon that both doors are opened at the same time. During the sliding process of one of the sliding sleeves, it is only subjected to the restoring force of the resetting member, without any clamping structure, which can effectively avoid the jamming situation when the air door is opened and effectively improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the pin-type air door locking device of the present invention;

[0020] Figure 2 It is a schematic diagram of the overall structure of the pin-type air door locking device of the present invention;

[0021] Figure 3 It is a partial structural cross-sectional view of the pin-type air door locking device of the present invention;

[0022] Reference numerals: 1, support plate; 2, resetting member; 3, connecting rope; 4, lifting ring; 5, sliding sleeve; 6, limiting component; 61, limiting plate; 62, limiting rod; 7, limiting hole; 8, self-locking component; 81, reset block; 82, limiting spring; 83, locking pin; 9, fixed sleeve; 10, fixed plate; 11, partition board; 12, fixing hole; 13, sliding block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Referring to Figures 1-3 , the present invention provides a shaft pin type air door locking device, including a support plate 1, a reset member 2, a connecting rope 3, a hanging ring 4, a sliding sleeve 5, a limiting component 6, a limiting hole 7, a self-locking component 8, a fixed sleeve 9, a fixing plate 10, a partition plate 11, a fixing hole 12, and a sliding block 13.

[0026] Specifically, two fixing plates 10 are fixedly connected to the support plate 1 and two sliding sleeves 5 are slidably connected. The two fixing plates 10 are respectively connected to the two sliding sleeves 5 in one-to-one correspondence through the reset member 2. A self-locking component 8 is arranged on the fixing plate 10. A limiting hole 7 is arranged on the side wall of one end of the sliding sleeve 5 away from the fixing plate 10. When one of the sliding sleeves 5 moves away from or close to one of the fixing plates 10, it can drive the self-locking component 8 on one of the fixing plates 10 to be connected to or disconnected from the limiting hole 7 on the other sliding sleeve 5. One end of a connecting rope 3 is fixedly connected to each end of the sliding sleeve 5 away from its corresponding fixing plate 10, and the other end of the connecting rope 3 is used to connect to an air door (not shown in the figure).

[0027] A fixed sleeve 9 is fixedly connected to the fixing plate 10, and the fixed sleeve 9 is used for the sliding of the self-locking component 8.

[0028] One end of the sliding sleeve 5 close to the fixing plate 10 is provided with an opening, and one end of the reset member 2 passes through the opening and is connected to the sliding sleeve 5. Preferably, a closing plate is arranged at one end of the sliding sleeve 5 away from its corresponding fixing plate 10, and one end of the reset member 2 is fixedly connected to the closing plate. The other end of the reset member 2 is connected to the side wall of the fixed sleeve 9. The reset member 2 is a reset spring of 50 pounds - 100 pounds. When the sliding sleeve 5 moves, it can drive the reset member 2 to stretch or contract, and the sliding sleeve 5 plays a certain protective role for the reset member 2.

[0029] The self-locking assembly 8 includes a reset block 81, a limiting spring 82 and a locking pin 83. The middle and one end of the locking pin 83 are fixedly connected to one end of the reset block 81 and the limiting spring 82 respectively. The other end of the limiting spring 82 is fixedly connected to the fixed plate 10. The limiting spring 82 is preferably a tension spring. The other end of the locking pin 83 passes through the fixed sleeve 9. When one of the sliding sleeves 5 moves away from or towards one of the fixed plates 10, it can drive the locking pin 83 on one of the fixed plates 10 to be connected or disconnected from the limiting hole 7 on the other sliding sleeve 5. The reset block 81 on one of the fixed plates 10 is in sliding connection with the conical surface of one of the sliding sleeves 5. When one sliding sleeve 5 moves away from one of the fixed plates 10, the sliding sleeve 5 releases the restriction on the reset block 81. Through the pulling of the locking pin 83 by the limiting spring 82, the locking pin 83 is connected to the limiting hole 7 on the other sliding sleeve 5, further restricting the sliding of the other sliding sleeve 5.

[0030] Both ends of the sliding sleeve 5 contract along the direction close to the axis, and a partition plate 11 is fixedly arranged on the side wall of the sliding sleeve 5 close to the fixed plate 10. The partition plate 11 is in sliding connection with the reset block 81.

[0031] A limiting assembly 6 is fixedly connected to the support plate 1. The limiting assembly 6 and the fixed plate 10 are arranged opposite to each other for the sliding of the sliding sleeve 5.

[0032] The limiting assembly 6 includes two limiting plates 61 and two limiting rods 62. The two limiting plates 61 are arranged in parallel and are arranged opposite to the fixed plate 10. The limiting plates 61 are for the sliding of the sliding sleeve 5. Two limiting rods 62 are horizontally fixedly connected between the two limiting plates 61. The upper end of the support plate 1 is fixedly connected to the limiting plate 61.

[0033] A "T"-shaped sliding block 13 is arranged on the side wall of the sliding sleeve 5. The sliding block 13 is in sliding connection between the adjacent limiting rods 62. The "T"-shaped sliding block 13 ensures that the sliding sleeve 5 slides between the two limiting rods 62 and also prevents one end of the sliding sleeve 5 from falling down when it moves away from the fixed plate 10.

[0034] A hanging ring 4 is fixedly connected to the outer side of the end of the sliding sleeve 5 away from the fixed plate 10 for fixedly connecting with one end of the connecting rope 3.

[0035] The support plate 1 is provided with a fixing hole 12 to facilitate the fixing of the support plate 1.

[0036] Working principle of the utility model: The suspension rings 4 fixedly connected to the outer sides of the two sliding sleeves 5 away from one end of the fixed plate 10 are respectively connected to the air dampers on both sides through connecting ropes 3. When the air damper on one side is opened, the sliding sleeve 5 connected to the air damper on this side slides out from the limiting plate 61 on one side, driving the corresponding reset member 2 to be stretched. The sliding sleeve 5 that slides out releases the restriction on the reset block 81, so that the limiting spring 82 pulls the locking pin 83 to be connected to the limiting hole 7 on the other sliding sleeve. At this time, the locking pin 83 restricts the sliding of the other sliding sleeve 5, and the air damper on the other side cannot be opened either. When the air damper on one side is closed, the sliding sleeve 5 slides into the limiting plate 61 on one side through the contraction of the reset member 2 and returns to the initial position. At the same time, one end of the sliding sleeve 5 slides relative to the reset block 81, and the sliding sleeve 5 drives the reset block 81 to move away from the limiting hole 7, further causing the locking pin 83 to disengage from the limiting hole 7, thereby releasing the sliding restriction on the other sliding sleeve 5. By repeating the above actions, when the air damper on the other side can be opened, the opening of the air damper on one side can be restricted.

[0037] The air damper structure in the utility model refers to the air damper structure in the patent CN103696796A, which belongs to the prior art and will not be elaborated here.

[0038] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0039] The embodiments described above are only used to describe the preferred mode of the present utility model, rather than to limit the scope of the present utility model. Without departing from the design spirit of the present utility model, various deformations and improvements made by those of ordinary skill in the art to the technical solution of the present utility model shall fall within the protection scope determined by the claims of the present utility model.

Claims

1. A pin-type damper locking device, comprising a support plate (1), characterized in that: The support plate (1) is fixedly connected to two fixed plates (10) and slidably connected to two sliding sleeves (5); the two fixed plates (10) are respectively connected in a one-to-one correspondence via a reset member (2) and the two sliding sleeves (5); a self-locking component (8) is provided on the fixed plate (10); a limiting hole (7) is provided on the side wall of one end of the sliding sleeve (5) away from the fixed plate (10); when one of the sliding sleeves (5) moves away from or towards one of the fixed plates (10), it can drive the self-locking component (8) on one of the fixed plates (10) to connect or disconnect with the limiting hole (7) on the other of the sliding sleeves (5); one end of the sliding sleeve (5) away from the corresponding fixed plate (10) is fixedly connected to one end of a connecting rope (3); the other end of the connecting rope (3) is used to be connected to the damper.

2. The pin-type damper locking device according to claim 1, characterized in that: A fixed sleeve (9) is fixedly connected to the fixed plate (10), and the fixed sleeve (9) is used for the sliding of the self-locking component (8).

3. The pin-type damper locking device according to claim 2, characterized in that: The sliding sleeve (5) is provided with an opening at one end close to the fixed plate (10); one end of the reset member (2) passes through the opening and is connected to the sliding sleeve (5); the other end of the reset member (2) is connected to the side wall of the fixed sleeve (9).

4. The pin-type damper locking device according to claim 2, characterized in that: The self-locking component (8) comprises a reset block (81), a limit spring (82) and a lock pin (83); the middle part and one end of the lock pin (83) are respectively fixedly connected to the reset block (81) and one end of the limit spring (82); the other end of the limit spring (82) is fixedly connected to the fixed plate (10); the other end of the lock pin (83) passes through the fixed sleeve (9); when one of the sliding sleeves (5) moves away from or toward one of the fixed plates (10), it can drive the lock pin (83) on one of the fixed plates (10) to connect or disconnect with the limit hole (7) on another of the sliding sleeves (5); the reset block (81) on one of the fixed plates (10) and one of the sliding sleeves (5) are slidably connected.

5. The pin-type damper locking device according to claim 4, characterized in that: Both ends of the sliding sleeve (5) are contracted in a direction close to the axis, and a baffle plate (11) is fixedly provided on the side wall of the sliding sleeve (5) close to the fixed plate (10), and the baffle plate (11) is slidably connected to the reset block (81).

6. The pin-type damper locking device according to claim 1, characterized in that: The support plate (1) is fixedly connected to a limiting assembly (6), and the limiting assembly (6) and the fixed plate (10) are arranged relative to each other and are used for the sliding sleeve (5) to slide.

7. The pin-type damper locking device according to claim 6, characterized in that: The limiting assembly (6) comprises two limiting plates (61) and two limiting rods (62). The two limiting plates (61) are arranged in parallel and are arranged opposite to the fixed plate (10). The limiting plates (61) are used for the sliding sleeve (5) to slide. The two limiting rods (62) are horizontally fixedly connected between the two limiting plates (61). The upper end of the support plate (1) is fixedly connected to the limiting plates (61).

8. The pin-type damper locking device according to claim 7, characterized in that: A "T"-shaped sliding block (13) is provided on the side wall of the sliding sleeve (5), and the sliding block (13) is slidably connected between adjacent limiting rods (62).

9. The pin-type damper locking device according to claim 8, characterized in that: The sliding sleeve (5) is fixedly connected to a lifting ring (4) at the outer side of one end away from the fixing plate (10) and is used for being fixedly connected to one end of the connecting rope (3).

10. The pin-type damper locking device according to claim 9, characterized in that: The support plate (1) is provided with a fixing hole (12).

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