Ventilation opening protection device for underground engineering construction

Abstract

The utility model discloses an underground engineering construction ventilation opening protection device which comprises a ventilation pipeline, a well lid is arranged at an air outlet of the ventilation pipeline, the top end of the ventilation pipeline is connected with the top end of the well lid through a second supporting arm, and two first supporting arms are rotationally arranged in the ventilation pipeline. One ends of the two first supporting arms are rotationally arranged on the well lid, the other ends of the two first supporting arms are connected through a connecting rod, and a driving mechanism is arranged on the connecting rod. The connecting rod is pushed through the driving mechanism to enable the first supporting arm to rotate in the ventilation pipeline, the first supporting arm jacks up the well lid and is matched with the second supporting arm to open the well lid, and therefore the ventilation pipeline can be closed conveniently, labor cost is reduced, and working efficiency is improved. Meanwhile, the situation that wild animals enter the ventilation pipeline at night to damage the ventilation pipeline or the wild animals die in the ventilation pipeline to pollute the ventilation pipeline is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of construction vents, and in particular to a protective device for underground engineering construction vents. Background Art

[0002] Underground engineering refers to underground civil engineering projects built deep below the ground for the development and utilization of underground space resources. It includes underground houses and underground structures, subways, highway tunnels, underwater tunnels, underground common trenches and underpasses, etc. During underground construction, people and machines consume a lot of oxygen when working in closed spaces, which may cause the oxygen concentration in the air to decrease. Closed spaces usually lack natural ventilation, so fresh air cannot enter to replenish oxygen, which can easily lead to hypoxia. Therefore, multiple ventilation holes are often set up to solve the hypoxia problem. However, in underground projects in the wild, the ventilation holes set up can easily cause wild animals to mistakenly enter at night, causing damage to ventilation equipment or harm to national protected animals. At the same time, the death of wild animals in the ventilation ducts will cause ventilation duct pollution, making the air carry pathogens. Utility Model Content

[0003] The utility model aims to provide a ventilation opening protection device for underground engineering construction to solve the above-mentioned deficiencies in the prior art.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a ventilation opening protection device for underground engineering construction, comprising: a ventilation duct, the air outlet of the ventilation duct is provided with a manhole cover, the top of the ventilation duct and the top of the manhole cover are connected by a second support arm, two first support arms are rotatably arranged in the ventilation duct, one end of the two first support arms are rotatably arranged on the manhole cover, and the other ends of the two first support arms are connected by a connecting rod, and a driving mechanism is arranged on the connecting rod.

[0005] Furthermore, one end of the second support arm is rotatably disposed on the top of the ventilation duct, and the other end of the second support arm is rotatably disposed on the top of the manhole cover.

[0006] Furthermore, the driving mechanism includes a second motor, the output shaft of the second motor is fixedly connected to a screw rod, the screw rod is rotatably connected to a threaded sleeve, and one end of the threaded sleeve is movably sleeved on the connecting rod.

[0007] Furthermore, a mounting angle code is installed in the ventilation duct, a mounting seat is rotatably provided on the mounting angle code, and the second motor is fixedly installed on the mounting seat.

[0008] Furthermore, a first ventilation opening is provided on the ventilation duct, and a second ventilation opening is provided on the manhole cover.

[0009] Furthermore, a filter screen is arranged in the ventilation duct.

[0010] Furthermore, a first motor is fixedly installed in the ventilation duct, and a fan blade is fixedly connected to an output shaft of the first motor.

[0011] In the above technical solution, the utility model provides a ventilation hole protection device for underground engineering construction with the following beneficial effects:

[0012] In the utility model, a driving mechanism is used to push the connecting rod to enable the first support arm to rotate in the ventilation duct, and the first support arm lifts the manhole cover, and cooperates with the second support arm to realize the opening of the manhole cover, thereby facilitating the closing of the ventilation duct and reducing labor costs, while preventing wild animals from entering the ventilation duct at night to cause damage to the ventilation duct or wild animals from dying in the ventilation duct and causing pollution to the ventilation duct.

[0013] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0014] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0016] Figure 1 A schematic diagram of the structure provided for an embodiment of the utility model;

[0017] Figure 2 A schematic diagram of the internal structure of the device provided in the embodiment of the utility model;

[0018] Figure 3 A schematic diagram of the structure of a manhole cover opening and closing mechanism provided in an embodiment of the utility model.

[0019] Description of reference numerals:

[0020] 1. Ventilation duct; 11. Installation angle code; 12. First vent; 2. First motor; 3. Fan blades; 4. Filter; 5. Manhole cover; 51. Second vent; 6. Second motor; 71. Screw rod; 72. Screw sleeve; 8. First support arm; 88. Mounting seat; 9. Second support arm; 10. Connecting rod. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0022] Please refer to 1-3, a ventilation opening protection device for underground engineering construction includes: a ventilation duct 1, an air outlet of the ventilation duct 1 is provided with a manhole cover 5, the top of the ventilation duct 1 and the top of the manhole cover 5 are connected by a second support arm 9, two first support arms 8 are rotatably arranged in the ventilation duct 1, one end of the two first support arms 8 are rotatably arranged on the manhole cover 5, and the other ends of the two first support arms 8 are connected by a connecting rod 10, and a driving mechanism is arranged on the connecting rod 10.

[0023] Specifically, in the utility model, the connecting rod 10 is pushed by the driving mechanism to make the first support arm 8 rotate in the ventilation duct 1, and the first support arm 8 lifts the manhole cover 5, and cooperates with the second support arm 9 to realize the opening of the manhole cover 5, thereby facilitating the closing of the ventilation duct 1 and reducing labor costs. At the same time, it is prevented that wild animals enter the ventilation duct 1 at night to damage the ventilation duct 1 or wild animals die in the ventilation duct 1 and cause pollution to the ventilation duct 1.

[0024] In another embodiment of the present invention, reference Figures 1 to 3A ventilation opening protection device for underground engineering construction includes: a ventilation duct 1, a filter screen 4 is arranged in the ventilation duct 1, the filter screen 4 is fixedly installed in the ventilation duct 1, the circulating air is filtered by the filter screen 4 to reduce air pollution, a first motor 2 is fixedly installed in the ventilation duct 1, a bracket for installing the first motor 2 is arranged in the ventilation duct 1, the first motor 2 is fixedly installed on the bracket, a fan blade 3 is fixedly connected to the output shaft of the first motor 2, the fan blade 3 is driven to rotate by the first motor 2, so that the air circulation speed is accelerated, a manhole cover 5 is arranged at the air outlet of the ventilation duct 1, the top of the ventilation duct 1 and the top of the manhole cover 5 are connected by a second support arm 9, and one end of the second support arm 9 is rotatably arranged on At the top of the ventilation duct 1, the other end of the second support arm 9 is rotatably set on the top of the manhole cover 5. Two first support arms 8 are rotatably set in the ventilation duct 1. One end of the two first support arms 8 are rotatably set on the manhole cover 5. The other ends of the two first support arms 8 are connected by a connecting rod 10. The connecting rod 10 and the first support arm 8 are detachably connected, which is convenient for sleeve 72 to be sleeved on the connecting rod 10. A driving mechanism is set on the connecting rod 10, and the driving mechanism includes a second motor 6. The output shaft of the second motor 6 is fixedly connected with a screw rod 71. The screw rod 71 is rotatably connected with a screw sleeve 72. One end of the screw sleeve 72 is movably sleeved on the connecting rod 10. An installation angle code 11 is installed in the ventilation duct 1. A mounting seat 88 is rotatably provided on the angle code 11, and the second motor 6 is fixedly installed on the mounting seat 88. The spiral situation between the screw rod 71 and the screw sleeve 72 is realized by controlling the on and off of the second motor 6. The second motor 6 drives the screw rod 71 to rotate, so that the screw sleeve 72 slides relative to the screw rod 71, thereby pushing out or pulling back the connecting rod 10. When the screw sleeve 72 pushes the connecting rod 10 outward, the two first support arms 8 rotate in the ventilation duct 1, and the other end of the first support arm 8 lifts the manhole cover 5, and cooperates with the second support arm 9 to lift the manhole cover 5 to realize the opening of the manhole cover 5. When the manhole cover 5 needs to be closed at night, it is only necessary to start the second motor 6 to drive the screw rod 71 to rotate to realize the screw sleeve 72 on the screw rod 71. The manhole cover 5 is provided with a first vent 12, and a second vent 51 is provided on the manhole cover 5. By providing the first vent 12 on the ventilation duct 1 and the second vent 51 on the manhole cover 5, the ventilation duct 1 can also work normally at night, ensuring that the staff will not feel uncomfortable when entering the underground project to work the next day. When a large number of projects are carried out during the day, the manhole cover 5 is opened, ventilation is carried out through the vent of the ventilation duct 1, and dust generated during the underground project is discharged, providing a suitable environment for the workers.

[0025] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A ventilation opening protection device for underground engineering construction, comprising: A ventilation duct (1), characterized in that: a manhole cover (5) is provided at the air outlet of the ventilation duct (1), the top end of the ventilation duct (1) is connected to the top end of the manhole cover (5) via a second support arm (9), two first support arms (8) are rotatably provided in the ventilation duct (1), one end of each of the two first support arms (8) is rotatably provided on the manhole cover (5), and the other ends of the two first support arms (8) are connected via a connecting rod (10), and a driving mechanism is provided on the connecting rod (10).

2. The underground engineering construction vent protection device according to claim 1, characterized in that: One end of the second support arm (9) is rotatably disposed on the top end of the ventilation duct (1), and the other end of the second support arm (9) is rotatably disposed on the top end of the manhole cover (5).

3. The underground engineering construction vent protection device according to claim 2, characterized in that: The driving mechanism comprises a second motor (6), the output shaft of the second motor (6) is fixedly connected to a screw rod (71), the screw rod (71) is rotatably connected to a threaded sleeve (72), and one end of the threaded sleeve (72) is movably sleeved on a connecting rod (10).

4. The underground engineering construction vent protection device according to claim 3 is characterized in that: A mounting angle bracket (11) is installed in the ventilation duct (1), a mounting seat (88) is rotatably provided on the mounting angle bracket (11), and the second motor (6) is fixedly mounted on the mounting seat (88).

5. The underground engineering construction vent protection device according to claim 4, characterized in that: The ventilation duct (1) is provided with a first ventilation opening (12), and the manhole cover (5) is provided with a second ventilation opening (51).

6. The underground engineering construction vent protection device according to claim 1, characterized in that: A filter screen (4) is arranged in the ventilation duct (1).

7. The underground engineering construction vent protection device according to claim 1, characterized in that: A first motor (2) is fixedly installed in the ventilation duct (1), and a fan blade (3) is fixedly connected to an output shaft of the first motor (2).

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