Connecting device for air compressor and distributing machine hose

Abstract

The utility model provides a connecting device for an air compressor and a distributing machine hose, which belongs to the field of connecting devices and comprises the air compressor, the distributing machine hose arranged outside the air compressor and a connecting piece arranged on the outer wall of the air compressor, and a connecting component is arranged on the outer wall of the connecting piece. According to the device, a stirring wheel and a sealing gasket are arranged, a connecting piece pushes a third connecting pipe and the sealing gasket to move through a second connecting pipe and a second extension pipe and slides into a first extension pipe till the outer wall of the sealing gasket abuts against the inner wall of the first extension pipe, and at the moment, the stirring wheel is rotated, so that the stirring wheel moves under the action of threads; and the shifting wheel moves to the outer wall of the first extension pipe, at the moment, part of the shifting wheel still has the outer wall of the second extension pipe, at the moment, connection between the first connecting pipe and the second connecting pipe is completed, and the problems that an existing connecting device is complex in structure, operation cost is increased, and shutdown maintenance time is prolonged are solved.

Description

Technical Field

[0001] The utility model relates to the field of connecting devices, in particular to a connecting device for an air compressor and a hose of a material placing machine. Background Art

[0002] In order to ensure the connection effect between the air compressor and the concrete placing machine hose, a connecting device is usually used to connect the air compressor and the concrete placing machine hose. The existing connecting devices mainly include connectors, connectors, fixtures, valves and pressure gauges.

[0003] The connection device between the air compressor and the concrete placing boom hose has many advantages. These advantages are not only reflected in the efficiency of equipment operation, but also include system safety and adaptability to different working environments; the design of the connection device ensures the efficient transmission of compressed air from the air compressor to the concrete placing boom, reduces energy loss, and improves overall work efficiency; high-quality connection devices can provide a stable supply of compressed gas, which is essential to maintain the continuous operation of equipment such as concrete placing booms.

[0004] However, the connection device between the air compressor and the hose of the fabricating machine may still have some shortcomings in practical applications: for example, in order to ensure the sealing effect of the connection device, the connection device is usually designed to be more complicated. Although the sealing effect of the connection is guaranteed, it increases the time required for maintenance and inspection, and leads to increased operating costs and prolonged downtime. How to improve these problems has become an urgent problem to be solved by technicians in this field. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a connecting device for an air compressor and a fabric placing machine hose, aiming to improve the problem that the existing connecting device has a relatively complex structure, resulting in increased operating costs and prolonged downtime for maintenance.

[0006] The utility model is achieved in this way:

[0007] The utility model provides a connecting device for an air compressor and a material placing machine hose, comprising an air compressor, a material placing machine hose arranged outside the air compressor and a connecting piece arranged on the outer wall of the air compressor, wherein the outer wall of the connecting piece is provided with a connecting component, and the outer wall of the connecting component is installed with an auxiliary component.

[0008] The auxiliary component is composed of an adjusting unit and a traction unit. The adjusting unit is located on the outer wall of the connecting component, and the traction unit is located on the outer wall of the adjusting unit.

[0009] The connecting assembly includes a connecting tube 1, a connecting tube 2, an extension tube 1, an extension tube 2, a toggle wheel, a connecting tube 3 and a sealing gasket. The connecting tube 1 is fixedly connected to the outer wall of the connecting piece, the connecting tube 2 is fixedly connected to the outer wall of the air compressor, the extension tube 1 is fixedly connected to the outer wall of the connecting tube 1, the extension tube 2 is fixedly connected to the outer wall of the connecting tube 2, the toggle wheel is arranged on the outer wall of the extension tube 1, the connecting tube 3 is fixedly connected to the outer wall of the extension tube 2, and the sealing gasket is fixedly connected to the outer wall of the connecting tube 3.

[0010] Preferably, the inner wall of the extension tube one is fixedly connected with a sliding rod, the outer walls of the extension tube one and the extension tube two are both provided with threads, and the inner wall of the toggle wheel is adapted to the threads provided on the outer walls of the extension tube one and the extension tube two.

[0011] By adopting the above technical solution, the toggle wheel can be moved by rotating, so that the toggle wheel moves under the action of the thread, thereby completing the connection between the extension tube 1 and the extension tube 2.

[0012] Preferably, the connecting tube three and the sealing gasket are both slidably connected to the extension tube one, and the outer wall of the connecting tube three and the outer wall of the sealing gasket are both provided with sliding rails, and the sliding rod located on the inner wall of the extension tube one is slidably connected to the sliding rails located on the outer wall of the connecting tube three and the outer wall of the sealing gasket.

[0013] By adopting the above technical solution, connecting tube three and sealing gasket can slide into the interior of extension tube one. The existence of the sliding rod can limit the installation angle of connecting tube two to prevent the thread on the outer wall of extension tube one from being unable to adapt to the thread on the outer wall of extension tube two.

[0014] Preferably, the adjustment unit includes an outer shell, an outer frame, a movable plate and a slide plate, the outer shell is arranged at the bottom of the connecting tube one, the outer frame is installed on the outer wall of the outer shell, the movable plate is slidably connected to the outer wall of the connecting tube one, and the slide plate is fixedly connected to the outer wall of the movable plate.

[0015] By adopting the above technical solution, the movable plate can be moved on the outer wall of the connecting pipe 1, so that the position of the movable plate can be adjusted.

[0016] Preferably, a square plate is fixedly connected to the outer wall of the shell, the shell is distributed at the bottom of connecting tube one and the top of connecting tube one, the shell located at the bottom of connecting tube one is rotatably connected to the shell located at the top of connecting tube one, the outer frame is slidably connected to the square plate, the movable plate is distributed on the left and right sides of the shell, and the end of the slide plate away from the movable plate penetrates the outer wall of the shell, extends to the interior of the shell, and is slidably connected to the inner wall of the shell.

[0017] By adopting the above technical solution, it can be determined by rotation whether the corresponding shells are closed, and the closing of the shells can be restricted by the outer frame. When the movable plate moves, it can drive the slide plate to slide inside the shell.

[0018] Preferably, the traction unit includes a threaded rod, a sleeve, a gear, a rack, a rotating wheel and a limiting ring, the threaded rod is fixedly connected to the outer wall of the movable plate located on the left side of the outer shell, the sleeve is installed on the outer wall of the movable plate located on the right side of the outer shell, the gear is fixedly connected to the outer wall of the sleeve, the rack is meshed with the outer wall of the gear, the rotating wheel is installed on the outer wall of the gear, and the limiting ring is fixedly connected to the outer wall of the connecting pipe.

[0019] By adopting the above technical solution, when the sleeve and the threaded rod move, the movable plates on both sides can be driven to move, and when the gear rotates, the sleeve can be driven to rotate.

[0020] Preferably, the end of the threaded rod away from the movable plate passes through the outer wall of the sleeve, extends to the inside of the sleeve, and fits with the inner wall of the sleeve. A groove is provided on the outer wall of the gear, and the tooth groove inside the rack passes through the rack.

[0021] By adopting the above technical solution, when the sleeve rotates, the threaded rod will move under the action of the thread, and the rack can be disassembled and assembled by sliding.

[0022] Preferably, a clamping block is fixedly connected to the outer wall of the rotating wheel, the clamping block located on the outer wall of the rotating wheel is clamped with the clamping groove, the limiting ring is distributed on the outer wall of the connecting tube one and the outer wall of the connecting tube two, and the outer wall of the limiting ring abuts against the outer wall of the movable plate.

[0023] By adopting the above technical solution, the rotating wheel can drive the gear to rotate through the slot and the block, and when the movable plate moves, pressure can be applied to the connecting pipe 1 and the connecting pipe 2 through the limiting ring.

[0024] The beneficial effects of the utility model are:

[0025] 1. By setting a toggle wheel and a sealing gasket, the connecting piece pushes the connecting tube three and the sealing gasket to move through the connecting tube two and the extension tube two, and slides into the interior of the extension tube one until the outer wall of the sealing gasket abuts against the inner wall of the extension tube one. At this time, the toggle wheel is rotated to make the toggle wheel move under the action of the thread and move to the outer wall of the extension tube one. At this time, the toggle wheel still has part of the outer wall of the extension tube two. At this time, the connection between the connecting tube one and the connecting tube two is completed, which solves the problem that the existing connecting device structure is relatively complex, resulting in increased operating costs and extended downtime and maintenance time.

[0026] 2. After setting the movable plate and the sleeve and completing the installation of the auxiliary components, rotate the wheel, and the gear will drive the rack to operate, and the sleeve located on the outer wall of the movable plate will rotate. At this time, the threaded rod adapted to the inner wall of the sleeve will drive the movable plate to move under the action of the sleeve, and the movable plates on both sides will apply pressure to the two limit rings respectively, thereby strengthening the sealing strength between connecting pipe 1 and connecting pipe 2. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 This is a schematic diagram of the overall structure of a connecting device for an air compressor and a hose of a material placing machine provided in an embodiment of the utility model;

[0029] Figure 2 It is a schematic diagram of a connecting device structure of a connecting piece of an air compressor and a hose of a material placing machine provided by an embodiment of the utility model;

[0030] Figure 3 It is a partially separated schematic diagram of the auxiliary assembly structure of a connection device for an air compressor and a hose of a material placing machine provided by an embodiment of the utility model;

[0031] Figure 4 It is a schematic diagram of the rotary structure of a connecting device for an air compressor and a hose of a material placing machine provided in an embodiment of the utility model;

[0032] Figure 5 It is a partial schematic diagram of the internal structure of an auxiliary assembly of a connection device for an air compressor and a hose of a material placing machine provided by an embodiment of the utility model;

[0033] Figure 6 It is a schematic diagram of the separation structure of a connecting assembly of a connecting device for an air compressor and a hose of a material placing machine provided in an embodiment of the utility model.

[0034] In the figure: 1. air compressor; 2. fabric machine hose; 3. connector; 4. connecting assembly; 401. connecting pipe 1; 402. connecting pipe 2; 403. extension pipe 1; 404. extension pipe 2; 405. toggle wheel; 406. connecting pipe 3; 407. sealing gasket; 5. auxiliary assembly; 501. housing; 502. outer frame; 503. moving plate; 504. slide plate; 505. threaded rod; 506. sleeve; 507. gear; 508. rack; 509. rotating wheel; 510. limiting ring. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] Reference Figure 1 , Figure 2 , Figure 5 and Figure 6 A connecting device for an air compressor and a concrete placing machine hose comprises an air compressor 1, a concrete placing machine hose 2 arranged outside the air compressor 1 and a connecting piece 3 arranged on the outer wall of the air compressor 1, wherein the outer wall of the connecting piece 3 is provided with a connecting component 4.

[0037] Further, the connecting assembly 4 includes a connecting pipe 1 401, a connecting pipe 2 402, an extension pipe 1 403, an extension pipe 2 404, a toggle wheel 405, a connecting pipe 3 406 and a sealing gasket 407, the connecting pipe 1 401 is fixedly connected to the outer wall of the connecting member 3, the connecting pipe 2 402 is fixedly connected to the outer wall of the air compressor 1, the extension pipe 1 403 is fixedly connected to the outer wall of the connecting pipe 1 401, the inner wall of the extension pipe 1 403 is fixedly connected with a slide bar, the extension pipe 2 404 is fixedly connected to the outer wall of the connecting pipe 2 402, the outer walls of the extension pipe 1 403 and the outer walls of the extension pipe 2 404 are both provided with threads, the toggle wheel 405 is arranged on the outer wall of the extension pipe 1 403, the inner wall of the toggle wheel 405 is adapted to the threads provided on the outer wall of the extension pipe 1 403 and the threads provided on the outer wall of the extension pipe 2 404, and the toggle wheel 405 can be moved by rotating , so that the toggle wheel 405 moves under the action of the thread, thereby completing the connection between the extension tube 1 403 and the extension tube 2 404, the connecting tube 3 406 is fixedly connected to the outer wall of the extension tube 2 404, the sealing gasket 407 is fixedly connected to the outer wall of the connecting tube 3 406, the connecting tube 3 406 and the sealing gasket 407 are both slidably connected to the extension tube 1 403, the outer walls of the connecting tube 3 406 and the outer walls of the sealing gasket 407 are both provided with sliding rails, the sliding rod located on the inner wall of the extension tube 1 403 is slidably connected with the sliding rail located on the outer wall of the connecting tube 3 406 and the sliding rail of the outer wall of the sealing gasket 407, the connecting tube 3 406 and the sealing gasket 407 can slide into the interior of the extension tube 1 403, the existence of the sliding rod can limit the installation angle of the connecting tube 2 402, to prevent the thread of the outer wall of the extension tube 1 403 from being unable to adapt to the thread of the outer wall of the extension tube 2 404.

[0038] By providing the toggle wheel 405 and the sealing gasket 407, the connector 3 pushes the connecting tube 3 406 and the sealing gasket 407 to move through the connecting tube 2 402 and the extension tube 2 404, and slides into the interior of the extension tube 1 403 until the outer wall of the sealing gasket 407 abuts against the inner wall of the extension tube 1 403. At this time, the toggle wheel 405 is rotated to move under the action of the thread and move to the outer wall of the extension tube 1 403. At this time, the toggle wheel 405 still has a part of the outer wall of the extension tube 2 404, and the connecting tube 1 401 and the connecting tube 2 404 are connected. 02 solves the problem that the existing connecting device structure is relatively complex, which leads to increased operating costs and extended downtime for maintenance; by arranging a sliding rod inside the extension tube 1 403 and opening a sliding rail on the outer wall of the connecting tube 3 406 and the sealing gasket 407, the extension tube 2 404 can be restricted during the installation process to avoid the rotation of the extension tube 2 404 during the installation process, resulting in the thread of the outer wall of the extension tube 1 403 being unable to communicate with the thread of the outer wall of the extension tube 2 404, making it impossible for the toggle wheel 405 to move to the outer wall of the extension tube 1 403 through the thread.

[0039] Reference Figure 1-5 , further; the outer wall of the connecting component 4 is installed with an auxiliary component 5, the auxiliary component 5 consists of an adjustment unit and a traction unit, the adjustment unit is located on the outer wall of the connecting component 4, and the traction unit is located on the outer wall of the adjustment unit.

[0040] The adjustment unit includes a shell 501, an outer frame 502, a movable plate 503 and a slide plate 504. The shell 501 is arranged at the bottom of the connecting pipe 401. The outer wall of the shell 501 is fixedly connected with a square plate. The shells 501 are distributed at the bottom of the connecting pipe 401 and the top of the connecting pipe 401. The shell 501 located at the bottom of the connecting pipe 401 is rotatably connected with the shell 501 located at the top of the connecting pipe 401. Whether the corresponding shells 501 are closed can be determined by rotation. The outer frame 502 is installed on the outer wall of the shell 501. The outer frame 502 is slidably connected with the square plate. The outer frame 502 can be used to adjust the shell The closure of 501 is restricted, the moving plate 503 is slidably connected to the outer wall of the connecting tube 401, the moving plate 503 can move on the outer wall of the connecting tube 401, so as to adjust the position of the moving plate 503, the moving plate 503 is distributed on the left and right sides of the shell 501, the slide plate 504 is fixedly connected to the outer wall of the moving plate 503, the end of the slide plate 504 away from the moving plate 503 passes through the outer wall of the shell 501, and extends to the inside of the shell 501, and is slidably connected to the inner wall of the shell 501, when the moving plate 503 moves, it can drive the slide plate 504 to slide inside the shell 501.

[0041] The traction unit includes a threaded rod 505, a sleeve 506, a gear 507, a rack 508, a rotating wheel 509 and a limiting ring 510. The threaded rod 505 is fixedly connected to the outer wall of the movable plate 503 located on the left side of the shell 501, and the sleeve 506 is installed on the outer wall of the movable plate 503 located on the right side of the shell 501. When the sleeve 506 and the threaded rod 505 move, the movable plates 503 on both sides can be driven to move. The end of the threaded rod 505 away from the movable plate 503 passes through the outer wall of the sleeve 506, extends to the inside of the sleeve 506, and adapts to the inner wall of the sleeve 506. When the sleeve 506 rotates, the threaded rod 505 will move under the action of the thread. The gear 507 is fixedly connected to the outer wall of the sleeve 506. When the gear 507 rotates, the sleeve 506 can be driven to rotate. A slot is provided on the outer wall of the wheel 507, and the rack 508 is meshed with the outer wall of the gear 507. The tooth groove inside the rack 508 passes through the rack 508, and the rack 508 can be disassembled and assembled by sliding. The rotating wheel 509 is installed on the outer wall of the gear 507. The outer wall of the rotating wheel 509 is fixedly connected with a block. The block located on the outer wall of the rotating wheel 509 is engaged with the slot. The rotating wheel 509 can drive the gear 507 to rotate through the slot and the block. The limiting ring 510 is fixedly connected to the outer wall of the connecting tube 401. The limiting ring 510 is distributed on the outer wall of the connecting tube 401 and the outer wall of the connecting tube 2 402. The outer wall of the limiting ring 510 abuts against the outer wall of the movable plate 503. When the movable plate 503 moves, pressure can be applied to the connecting tube 401 and the connecting tube 2 402 through the limiting ring 510.

[0042] After the installation of the auxiliary component 5 is completed by setting the movable plate 503 and the sleeve 506, the rotating wheel 509 is rotated, and the gear 507 will drive the rack 508 to operate, and the sleeve 506 located on the outer wall of the movable plate 503 will rotate. At this time, the threaded rod 505 adapted to the inner wall of the sleeve 506 will drive the movable plate 503 to move under the action of the sleeve 506, and make the movable plates 503 on both sides apply pressure to the two limit rings 510 respectively, so as to strengthen the sealing strength between the connecting pipe 1 401 and the connecting pipe 2 402; at the same time, since the tooth groove inside the rack 508 passes through the rack 508 body, the rack 508 can be installed by sliding. After the work is completed, the rack 508 can be removed by sliding and stored, and the operation is simple and convenient.

[0043] The working principle of the connecting device of an air compressor and a hose of a material placing machine is as follows: the connecting member 3 is moved by sliding, so that the connecting member 3 pushes the connecting tube 3 406 and the sealing gasket 407 to move through the connecting tube 2 402 and the extension tube 2 404, and slides into the interior of the extension tube 1 403, and is slidably connected with the sliding rod installed inside the extension tube 1 403, and then the outer shell 501 is moved, so that the outer shell 501 moves to the outer wall of the connecting tube 1 401 and the outer wall of the connecting tube 2 402, and the rotating wheel 509 is rotated, so that the rotating wheel 509 drives the gear 507 to rotate through the block and the slot, and at this time the gear 507 drives the rack 508 to operate, and the fixed The sleeve 506 fixed on the outer wall of the gear 507 will rotate with the gear 507, and the threaded rod 505 adapted to the inner wall of the sleeve 506 will drive the movable plate 503 on one side to move under the action of the thread, until the movable plates 503 on both sides are in contact with the outer wall of the limiting ring 510 and continue to apply pressure to the limiting ring 510. After applying appropriate pressure, the toggle wheel 405 is rotated so that the toggle wheel 405 moves to the outer wall of the extension tube 1 403 through the extension tube 2 404 under the action of the thread, thereby completing the connection between the connector 3 and the air compressor 1, and repeating this operation to complete the connection between the connector 3 and the fabricating machine hose 2.

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be modified and varied in various ways. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A connecting device for an air compressor and a material placing machine hose, comprising an air compressor (1), a material placing machine hose (2) arranged outside the air compressor (1), and a connecting piece (3) arranged on the outer wall of the air compressor (1), characterized in that: The outer wall of the connecting piece (3) is provided with a connecting component (4), and the outer wall of the connecting component (4) is installed with an auxiliary component (5); The auxiliary component (5) is composed of an adjustment unit and a traction unit, the adjustment unit is located on the outer wall of the connecting component (4), and the traction unit is located on the outer wall of the adjustment unit; The connection assembly (4) comprises a connection tube 1 (401), a connection tube 2 (402), an extension tube 1 (403), an extension tube 2 (404), a toggle wheel (405), a connection tube 3 (406) and a sealing gasket (407); the connection tube 1 (401) is fixedly connected to the outer wall of the connection member (3); the connection tube 2 (402) is fixedly connected to the outer wall of the air compressor (1); the extension tube 1 (403) is fixedly connected to the outer wall of the connection tube 1 (401); the extension tube 2 (404) is fixedly connected to the outer wall of the connection tube 2 (402); the toggle wheel (405) is arranged on the outer wall of the extension tube 1 (403); the connection tube 3 (406) is fixedly connected to the outer wall of the extension tube 2 (404); and the sealing gasket (407) is fixedly connected to the outer wall of the connection tube 3 (406).

2. The connecting device of an air compressor and a hose of a material placing machine according to claim 1, characterized in that: The inner wall of the extension tube 1 (403) is fixedly connected to a sliding rod, the outer wall of the extension tube 1 (403) and the outer wall of the extension tube 2 (404) are both provided with threads, and the inner wall of the toggle wheel (405) is adapted to the threads provided on the outer wall of the extension tube 1 (403) and the threads provided on the outer wall of the extension tube 2 (404).

3. The connecting device of an air compressor and a hose of a material placing machine according to claim 2, characterized in that: The connecting tube three (406) and the sealing gasket (407) are both slidably connected to the extension tube one (403); the outer wall of the connecting tube three (406) and the outer wall of the sealing gasket (407) are both provided with sliding rails; the sliding rod located on the inner wall of the extension tube one (403) is slidably connected to the sliding rail located on the outer wall of the connecting tube three (406) and the sliding rail located on the outer wall of the sealing gasket (407).

4. The connecting device of an air compressor and a hose of a material placing machine according to claim 3, characterized in that: The adjustment unit comprises an outer shell (501), an outer frame (502), a movable plate (503) and a slide plate (504); the outer shell (501) is arranged at the bottom of the connecting tube (401); the outer frame (502) is installed on the outer wall of the outer shell (501); the movable plate (503) is slidably connected to the outer wall of the connecting tube (401); and the slide plate (504) is fixedly connected to the outer wall of the movable plate (503).

5. The connecting device of an air compressor and a hose of a material placing machine according to claim 4, characterized in that: The outer wall of the shell (501) is fixedly connected with a square plate. The shell (501) is distributed at the bottom of the connecting tube (401) and the top of the connecting tube (401). The shell (501) located at the bottom of the connecting tube (401) is rotatably connected to the shell (501) located at the top of the connecting tube (401). The outer frame (502) is slidably connected to the square plate. The movable plate (503) is distributed at the left and right sides of the shell (501). One end of the slide plate (504) away from the movable plate (503) penetrates the outer wall of the shell (501), extends to the inside of the shell (501), and is slidably connected to the inner wall of the shell (501).

6. The connecting device of an air compressor and a hose of a material placing machine according to claim 5, characterized in that: The traction unit comprises a threaded rod (505), a sleeve (506), a gear (507), a rack (508), a rotating wheel (509) and a limiting ring (510); the threaded rod (505) is fixedly connected to the outer wall of a movable plate (503) located on the left side of the housing (501); the sleeve (506) is installed on the outer wall of the movable plate (503) located on the right side of the housing (501); the gear (507) is fixedly connected to the outer wall of the sleeve (506); the rack (508) is meshed with the outer wall of the gear (507); the rotating wheel (509) is installed on the outer wall of the gear (507); and the limiting ring (510) is fixedly connected to the outer wall of the connecting pipe (401).

7. The connecting device of an air compressor and a hose of a material placing machine according to claim 6, characterized in that: One end of the threaded rod (505) away from the movable plate (503) penetrates the outer wall of the sleeve (506), extends to the inside of the sleeve (506), and is adapted to the inner wall of the sleeve (506); a slot is provided on the outer wall of the gear (507), and a tooth groove inside the rack (508) penetrates the rack (508).

8. The connecting device of an air compressor and a hose of a material placing machine according to claim 7, characterized in that: A clamping block is fixedly connected to the outer wall of the rotating wheel (509), the clamping block located on the outer wall of the rotating wheel (509) is clamped with the clamping groove, the limiting ring (510) is distributed on the outer wall of the connecting pipe 1 (401) and the outer wall of the connecting pipe 2 (402), and the outer wall of the limiting ring (510) is in contact with the outer wall of the movable plate (503).

Images