Civil air defense ventilation pipe connecting device

Abstract

The civil air defense ventilation pipe connecting device comprises ventilation pipes, a sealing rubber mat and a fixing clamp, the ends of the ventilation pipes are provided with flanges, the sealing rubber mat is installed between the two sections of ventilation pipes, the fixing clamp is clamped at the joint of the ventilation pipes, and the ventilation pipes are connected through the fixing clamp; the fixing clamp comprises two clamping plates, two first connecting rods, a second connecting rod assembly and a third connecting rod assembly, the lower portions of the first connecting rods are hinged to one sides of the clamping plates, and the middles of the first connecting rods are connected through the second connecting rod assembly. Ventilation pipes are quickly clamped through the fixing clamps, bolts do not need to be used for fixing, the installation efficiency of the ventilation pipes is improved, the length of the second connecting rod assembly can be adjusted, the installation requirements of the ventilation pipes of different sizes can be met, meanwhile, the clamping force can be controlled by adjusting the length of the second connecting rod assembly, and the installation efficiency is improved. Therefore, the fixing clamp can firmly clamp the ventilation pipe.

Description

Technical Field

[0001] The present application relates to the technical field of ventilation facilities for civil air defense projects, and in particular to a civil air defense ventilation pipe connection device. Background Art

[0002] my country's civil air defense projects are mainly located in the basements of buildings, using underground structures to form air-raid shelters in wartime to ensure the sheltering of personnel and supplies, civil air defense command, etc. Civil air defense projects are located underground, and air cannot circulate naturally. In addition, the basement is usually used as an underground garage, and the air quality is poor. Therefore, people usually set up ventilation facilities in civil air defense projects, and use fans to draw fresh air from the outside and send it underground. At the same time, exhaust devices are used to make the air in the civil air defense projects circulate. The air is mainly transported through ventilation pipes. Commonly used ventilation pipes are mainly made of galvanized steel plates. After multiple sections of ventilation pipes are spliced ​​together, pipelines are formed to deliver fresh air to various places. At present, ventilation pipes are mainly connected by road bolts. During installation and subsequent cleaning and maintenance, it takes a long time to disassemble and assemble. For this reason, people have designed some devices, such as the Chinese patent with application number 201921762888.7, which discloses a ventilation system that is easy to install, including an air supply duct and a connecting assembly arranged on the air supply duct, the air supply duct includes multiple different air supply ducts, and the connecting assembly includes a positioning pin, a locking hook and a sealing gasket. The ventilation pipes are connected to each other through positioning pins, locking hooks and other devices. However, the locking hooks, locking grooves and other structures of the device need to be arranged on the flanges on both sides of the ventilation pipe, which makes the structure of the ventilation pipe complicated, and the positioning accuracy of the locking hooks and locking grooves is high, otherwise they cannot be accurately connected, which further increases the difficulty of manufacturing the ventilation pipe. In order to facilitate production and subsequent installation and maintenance, a civil air defense ventilation pipe connection device is needed, which can quickly clamp the ventilation pipes to each other through fixing clamps, without the need for bolts, thereby improving the efficiency of ventilation pipe installation. Utility Model Content

[0003] In order to solve the above problems, the present application proposes a civil air defense ventilation pipe connection device, which quickly clamps the ventilation pipes to each other through fixing clamps without the need for bolts, thereby improving the efficiency of ventilation pipe installation.

[0004] This application is implemented through the following technical solutions:

[0005] The present application proposes a civil air defense ventilation pipe connection device, including: a ventilation pipe, a sealing pad, and a fixing clamp. The end of the ventilation pipe is provided with a flange, the sealing pad is installed between two sections of the ventilation pipe, the fixing clamp is clamped at the connection of the ventilation pipe, and the ventilation pipes are connected to each other through the fixing clamp; the fixing clamp includes a splint, a first connecting rod, a second connecting rod assembly, and a third connecting rod assembly. There are two of the splint and the first connecting rod. The lower part of the first connecting rod is hinged to one side of the splint, the middle parts of the first connecting rods are connected to each other through the second connecting rod assembly, and the upper parts of the first connecting rods are connected through the third connecting rod assembly. The splint is clamped on the flange.

[0006] Furthermore, the second connecting rod assembly includes a first clamping block and a second clamping block, and the first clamping block is connected to the clamping groove on the second clamping block via a clamping tooth.

[0007] Furthermore, the second clamping block is provided with a screw rod, the first clamping block is provided with a waist hole, the upper end of the screw rod passes through the waist hole, and the screw rod is provided with a locking nut, and the first clamping block and the second clamping block are connected to each other through the screw rod and the locking nut.

[0008] Furthermore, the third connecting rod assembly includes a first rod and a second rod, the first rod is provided with a stepped shaft at both ends, the second rod is provided with a stepped hole, and the first rod is connected to the second rod at both ends through the stepped shaft and the stepped hole.

[0009] Furthermore, the first rod end and the second rod end are both provided with an inclined portion and a flat portion.

[0010] Furthermore, a semicircular protrusion is provided on the plane portion of the end portion of the first rod, and a groove is provided on the plane portion of the end portion of the second rod.

[0011] Furthermore, the first rod is provided with a through hole.

[0012] The beneficial effects of the present application are as follows: the ventilation pipes can be quickly clamped together by the fixing clamp without the need for bolts, thereby improving the efficiency of ventilation pipe installation; the length of the second connecting rod assembly can be adjusted to meet the installation requirements of ventilation pipes of different sizes; and the clamping force can be controlled by adjusting the length of the second connecting rod assembly, so that the fixing clamp can firmly clamp the ventilation pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a structural schematic diagram of the utility model in an open state of the fixing clip;

[0015] Figure 3 This is a structural schematic diagram of the utility model in a clamping state of the fixing clamp;

[0016] Figure 4 It is a structural schematic diagram of the third connecting rod assembly of the utility model;

[0017] In the figure: 1-ventilation pipe, 2-sealing pad, 3-plywood, 4-first connecting rod, 5-second connecting rod assembly, 6-third connecting rod assembly, 7-flange, 8-first clamping block, 9-second clamping block, 10-grip, 11-slot, 12-screw, 13-locking nut, 14-first rod, 15-second rod, 16-inclined portion, 17-plane portion, 18-semicircular protrusion, 19-through hole. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. Obviously, the described embodiments are only a part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0019] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0020] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0021] like Figures 1 to 4As shown, an embodiment of the utility model provides a civil air defense ventilation pipe connection device, including: a ventilation pipe 1, a sealing pad 2, and a fixing clamp. The end of the ventilation pipe 1 is provided with a flange 7, the sealing pad 2 is installed between two sections of the ventilation pipe 1, and the fixing clamp is clamped at the connection of the ventilation pipe 1. The ventilation pipes 1 are connected to each other through the fixing clamp; the fixing clamp includes a splint 3, a first connecting rod 4, a second connecting rod assembly 5, and a third connecting rod assembly 6. There are two splints 3 and two first connecting rods 4. The lower part of the first connecting rod 4 is hinged to one side of the splint 3, the middle parts of the first connecting rods 4 are connected to each other through the second connecting rod assembly 5, and the upper parts of the first connecting rods 4 are connected through the third connecting rod assembly 6. The splint 3 is clamped on the flange 7.

[0022] In order to make the sealing gasket 2 fit more closely to the ventilation pipe 1, a backing glue can be set on the sealing gasket 2 when the sealing gasket 2 is made, and the sealing gasket 2 can be glued to the ventilation pipe 1 during installation, so that the sealing gasket 2 is accurately installed at the joint between the ventilation pipes 1. After the ventilation pipes 1 are butt-jointed, the worker clamps the fixing clamp on the flange 7 of the ventilation pipe 1, and then uses a screwdriver or other tool to pass through the through hole 19 to pry the first rod 14. After the first rod 14 rotates, the inclined portion 16 is misaligned, so that the second rod 15 is pushed to move to both sides through the inclined portion 16, so that the length of the third connecting rod assembly 6 becomes longer, thereby pushing the upper part of the first connecting rod 4 to expand outward, and the lower part of the first connecting rod 4 to retract inward. The lower part of the first connecting rod 4 is connected to the clamp plate 3, and the lower part of the first connecting rod 4 applies a thrust to the clamp plate 3, so that the clamp plate 3 clamps the flange 7, so that the two sections of the ventilation pipe 1 are firmly fixed together, and the ventilation pipes 1 are quickly clamped to each other by the fixing clamp, without the need to use bolts to fix, thereby improving the efficiency of the installation of the ventilation pipe 1.

[0023] In a preferred embodiment, the second connecting rod assembly 5 includes a first clamping block 8 and a second clamping block 9. The first clamping block 8 is connected to the clamping groove 11 on the second clamping block 9 via a clamping tooth 10. By clamping the clamping tooth 10 on different clamping grooves 11, the overall length of the second connecting rod assembly 5 can be adjusted, so that the length of the second connecting rod assembly 5 is adjustable to meet the installation requirements of ventilation pipes 1 of different sizes. At the same time, the clamping force can be controlled by adjusting the length of the second connecting rod assembly 5, so that the fixing clamp can firmly clamp the ventilation pipe 1.

[0024] In a preferred embodiment, Figure 2 As shown, a screw rod 12 is provided on the second clamping block 9, a waist hole is opened on the first clamping block 8, the upper end of the screw rod 12 passes through the waist hole, and a locking nut 13 is provided on the screw rod 12. The first clamping block 8 and the second clamping block 9 are connected to each other through the screw rod 12 and the locking nut 13. The first clamping block 8 and the second clamping block 9 are locked by the screw rod 12 and the locking nut 13, and the first clamping block 8 and the second clamping block 9 are prevented from sliding in the length direction by the groove 11 and the tooth 10, so as to prevent the second connecting rod assembly 5 from loosening when clamping the ventilation pipe 1.

[0025] Preferably, the third connecting rod assembly 6 includes a first rod member 14 and a second rod member 15, both ends of the first rod member 14 are provided with a stepped shaft, and the second rod member 15 is provided with a stepped hole. The two ends of the first rod member 14 are connected to the second rod member 15 through the stepped shaft and the stepped hole, so that after the first rod member 14 and the second rod member 15 are connected to each other, they can rotate relative to each other and slide a certain distance on the axis.

[0026] Preferably, if Figure 3 , Figure 4 As shown, the ends of the first rod 14 and the second rod 15 are both provided with an inclined portion 16 and a flat portion 17. When the third connecting rod assembly 6 is in a retracted state, the inclined portion 16 on the first rod 14 and the inclined portion 16 of the second rod 15 fit together. After the first rod 14 is bent to rotate, the inclined portions 16 are misaligned and thrust is generated mutually, pushing the second rod 15 to move axially, thereby extending the third connecting rod assembly 6 and obtaining thrust through the upper part of the first connecting rod 4 so that the clamping plate 3 obtains thrust to clamp the ventilation pipe 1.

[0027] Specifically, Figure 4 As shown, a semicircular protrusion 18 is provided on the flat portion 17 at the end of the first rod 14, and a groove is provided on the flat portion 17 at the end of the second rod 15. When the third connecting rod assembly 6 is in an extended state, the semicircular protrusion 18 is stuck in the groove, thereby generating a certain damping to prevent the first rod 14 from rotating, so that the third connecting rod assembly 6 remains in an extended state.

[0028] In a preferred embodiment, a through hole 19 is provided on the first rod 14, so that the first rod 14 can be easily moved and rotated by inserting a tool such as a screwdriver.

[0029] The connection device does not require bolts when fixing, which can increase the speed of disassembly and assembly of the ventilation pipe 1, making it convenient for workers to install the ventilation pipe, and also convenient for workers to operate when cleaning the pipe or maintaining the facilities in the tank at a later time, thereby improving work efficiency.

[0030] Of course, the present application may have many other implementations. Based on the present implementation, other implementations obtained by ordinary technicians in this field without any creative work are all within the scope of protection of the present application.

Claims

1. A civil air defense ventilation pipe connection device, characterized in that: include: A ventilation pipe (1), a sealing pad (2), and a fixing clamp, wherein the end of the ventilation pipe (1) is provided with a flange (7), the sealing pad (2) is installed between two sections of the ventilation pipe (1), the fixing clamp is clamped at the connection of the ventilation pipe (1), and the ventilation pipes (1) are connected to each other through the fixing clamp; the fixing clamp comprises a clamping plate (3), a first connecting rod (4), a second connecting rod assembly (5), and a third connecting rod assembly (6), the clamping plate (3) and the first connecting rod (4) are both provided with two, the lower part of the first connecting rod (4) is hinged to one side of the clamping plate (3), the middle parts of the first connecting rod (4) are connected to each other through the second connecting rod assembly (5), and the upper parts of the first connecting rod (4) are connected through the third connecting rod assembly (6), and the clamping plate (3) is clamped on the flange (7).

2. A civil air defense ventilation pipe connection device according to claim 1, characterized in that: The second connecting rod assembly (5) comprises a first clamping block (8) and a second clamping block (9); the first clamping block (8) is connected to a clamping groove (11) on the second clamping block (9) via a clamping tooth (10).

3. A civil air defense ventilation pipe connection device according to claim 2, characterized in that: The second clamping block (9) is provided with a screw rod (12), the first clamping block (8) is provided with a waist hole, the upper end of the screw rod (12) passes through the waist hole, and the screw rod (12) is provided with a locking nut (13), and the first clamping block (8) and the second clamping block (9) are connected to each other through the screw rod (12) and the locking nut (13).

4. The civil air defense ventilation pipe connection device according to claim 1, characterized in that: The third connecting rod assembly (6) comprises a first rod member (14) and a second rod member (15); the first rod member (14) is provided with a stepped shaft at both ends, the second rod member (15) is provided with a stepped hole, and the first rod member (14) is connected to the second rod member (15) at both ends via the stepped shaft and the stepped hole.

5. The civil air defense ventilation pipe connection device according to claim 4, characterized in that: The end of the first rod (14) and the end of the second rod (15) are both provided with an inclined portion (16) and a flat portion (17).

6. A civil air defense ventilation pipe connection device according to claim 5, characterized in that: A semicircular protrusion (18) is provided on the plane portion (17) at the end of the first rod (14), and a groove is provided on the plane portion (17) at the end of the second rod (15).

7. The civil air defense ventilation pipe connection device according to claim 4, characterized in that: The first rod (14) is provided with a through hole (19).

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