Air compressor convenient to maintain

By designing the access door and sliding connection mounting plate on the air compressor housing, and combining the fixed components of the threaded rod and star handle, the convenient disassembly and maintenance of the air compressor is achieved, solving the problem of time-consuming and labor-intensive maintenance of the existing air compressor, and improving maintenance efficiency and equipment stability.

CN222686829UActive Publication Date: 2025-03-28HANGZHOU CAIFU PRECISION MACHINERY CO LTD
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Patent Information

Application Number
CN202421563252.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-03
Publication Date
2025-03-28
Estimated Expiration
2034-07-03

AI Technical Summary

Technical Problem

The existing air compressor has a complex structure and is not easy to disassemble, which makes maintenance and maintenance work time-consuming and labor-intensive, reducing the efficiency of maintenance and maintenance.

Method used

An air compressor is designed for easy maintenance. By hinging the access door on the side wall of the shell, and slidingly connecting the mounting plate to the inner bottom wall of the shell, an air compressor is installed on the mounting plate, and a U-shaped groove and installation groove are provided at the bottom. Combined with the fixing components of the threaded rod and star handle, the mounting plate and air compressor can be easily removed and pulled out, and the U-shaped support legs can be turned and opened to enhance stability.

Benefits of technology

Through this design, the maintenance efficiency of the air compressor is significantly improved, the maintenance process is simplified, the operation difficulty of staff is reduced, and the stability of the equipment is enhanced.

✦ Generated by Eureka AI based on patent content.

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Abstract

The air compressor convenient to maintain comprises a shell, an opening is formed in one side of the shell, an access door used for closing the opening of the shell is hinged to the side wall of the shell, a mounting plate is slidably connected to the inner bottom wall of the shell, an air compressor is mounted on the upper surface of the mounting plate, a U-shaped groove is formed in the bottom of the mounting plate, and a mounting groove is formed in the inner wall of the U-shaped groove; the inner wall of the mounting groove is rotatably connected with a first rotating shaft, the first rotating shaft is fixedly sleeved with a U-shaped supporting leg matched with the U-shaped groove, the shell is provided with a fixing assembly used for fixing the mounting plate in the shell, and when the air compressor needs to be maintained, a worker relieves the fixing effect of the fixing assembly on the mounting plate and opens the access door; the mounting plate and the air compressor body are pulled out of the shell, and then the U-shaped supporting legs are rotated to be opened, so that the U-shaped supporting legs are perpendicular to the mounting plate and are supported on the ground, the stability of the mounting plate and the air compressor is enhanced, maintenance of the air compressor is facilitated, and the maintenance efficiency of the air compressor is improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of air compressors, in particular to an air compressor which is easy to maintain. Background Art

[0002] An air compressor, or simply an air compressor, is a device used to compress gas. It generates high-pressure airflow by compressing air, thereby providing power to various pneumatic tools, equipment, and systems. Air compressors are widely used in many fields such as industry, construction, medical treatment, and transportation. Air compressors are driven by electric motors or internal combustion engines, and through pistons, screws, or other forms of compression elements, the air sucked in is compressed into a smaller space to increase its pressure. The high-pressure air is then stored in a gas tank for subsequent use.

[0003] During the long-term operation of the air compressor, it is necessary to regularly maintain and service the air compressor to ensure its stable and efficient operation. The air compressor in the prior art is arranged in a shell and has a complex structure. The internal components are not easy to disassemble, which makes the maintenance and service work time-consuming and labor-intensive, and reduces the efficiency of the maintenance and service of the air compressor. Utility Model Content

[0004] In order to solve the above problems, the utility model provides an air compressor which is easy to maintain.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions: an air compressor that is easy to maintain, including a shell, one side of the shell is open, the shell side wall is hinged with an inspection door for closing the shell opening, the inner bottom wall of the shell is slidably connected with a mounting plate, the upper surface of the mounting plate is mounted with an air compressor, the bottom of the mounting plate is provided with a U-shaped groove, the inner wall of the U-shaped groove is provided with a mounting groove, the inner wall of the mounting groove is rotatably connected with a first rotating shaft, the first rotating shaft is fixedly sleeved with a U-shaped support leg that cooperates with the U-shaped groove, and a fixing component for fixing the mounting plate in the shell is installed on the shell.

[0006] By adopting the above technical solution, when the air compressor needs to be maintained, the staff releases the fixing effect of the fixing assembly on the mounting plate and opens the inspection door, thereby pulling the mounting plate and the air compressor body out of the shell, and then rotates and opens the U-shaped support legs so that the U-shaped support legs are perpendicular to the mounting plate and supported on the ground, thereby enhancing the stability of the mounting plate and the air compressor, thereby facilitating the maintenance of the air compressor and improving the efficiency of the maintenance of the air compressor.

[0007] Furthermore, a threaded groove is formed on the side wall of the mounting plate, and the fixing assembly includes a threaded rod that passes through the side wall of the shell and is threadedly connected, and a star-shaped handle fixed to one end of the threaded rod away from the mounting plate, and the threaded rod is threadedly connected to the threaded groove.

[0008] By adopting the above technical solution, the threaded rod is threadedly connected to the threaded groove, so that the mounting plate is fixed in the shell, which enhances the stability of the mounting plate in the shell. When the mounting plate needs to be pulled out, the staff twists the threaded rod through the star-shaped handle to make the threaded rod break away from the contact with the threaded groove, thereby pulling out the mounting plate to perform maintenance and repair on the air compressor.

[0009] Furthermore, a first torsion spring sleeved on the first rotating shaft is arranged in the installation groove, one end of the first torsion spring is fixed to the inner wall of the installation groove, and the other end of the first torsion spring is fixed to the side wall of the U-shaped support leg, and a limit component is installed on the U-shaped support leg to prevent the U-shaped support leg from closing automatically.

[0010] By adopting the above technical solution, when the U-shaped supporting legs need to be opened after the mounting plate is pulled out, the staff rotates and opens the U-shaped supporting legs and then opens the limiting assembly, so that the limiting assembly limits the U-shaped supporting legs, so that the U-shaped supporting legs remain perpendicular to the mounting plate; when the U-shaped supporting legs need to be folded up, the limiting assembly is closed and the U-shaped supporting legs are automatically closed under the torsion of the first torsion spring, so as to facilitate the rapid storage of the mounting plate.

[0011] Furthermore, a receiving groove is provided on the side wall of the U-shaped supporting leg, a fixing groove is provided on the inner wall of the receiving groove, and the limiting assembly includes a second rotating shaft rotatably connected to the inner wall of the fixing groove, a sleeve fixedly mounted on the second rotating shaft, a support rod slidably connected to the inner wall of the sleeve, and a spring arranged in the sleeve, one end of the spring is fixed to the inner bottom wall of the sleeve, and the other end of the spring is fixed to the end of the support rod, and a supporting groove matching the support rod is provided on the inner top wall of the U-shaped groove.

[0012] By adopting the above technical solution, when it is necessary to open the U-shaped support leg to support the mounting plate, the staff opens the U-shaped support leg and then rotates the sleeve to open it. The support rod pops out under the elastic force of the spring and abuts against the support groove, so that the U-shaped support leg remains vertical to the mounting plate; when the maintenance of the air compressor is completed, the staff presses the support rod into the sleeve and then rotates the sleeve into the accommodating groove, so that the U-shaped support leg automatically closes under the torsion of the first torsion spring.

[0013] Furthermore, a second torsion spring sleeved on the second rotating shaft is arranged in the fixing groove, one end of the second torsion spring is fixed to the inner wall of the fixing groove, and the other end of the second torsion spring is fixed to the side wall of the sleeve.

[0014] By adopting the above technical solution, after the U-shaped support leg is rotated to open, the sleeve automatically opens under the torsion force of the second torsion spring, making it convenient for the staff to open the limiting assembly to limit the U-shaped support leg.

[0015] Furthermore, a limiting groove is provided on the inner wall of the shell, and a limiting block which is slidably connected to the limiting groove is fixed on the side wall of the mounting plate.

[0016] By adopting the above technical solution, the limit block is slidably connected in the limit groove, which limits the movement of the mounting plate, avoids the situation where the mounting plate is completely separated from the shell, and improves the safety of air compressor maintenance.

[0017] Furthermore, an arc groove is provided at the bottom of the mounting plate, a ball rollingly connected to the arc groove is embedded in the inner bottom wall of the shell, and the gap distance between the bottom of the mounting plate and the inner bottom wall of the shell is 0.2-0.4mm.

[0018] By adopting the above technical solution, the ball and the arc groove are rollingly connected, which reduces the friction between the mounting plate and the shell, thereby reducing the sliding resistance of the mounting plate and the shell, making it easier for workers to move the mounting plate and the air compressor.

[0019] Furthermore, a flared groove is provided at the intersection between the upper surface of the mounting plate and the side wall of the mounting plate, and a cross bar is fixed to the inner wall of the flared groove.

[0020] By adopting the above technical solution, the setting of the cross bar provides a fulcrum for pulling the installation plate, making it convenient for the staff to pull the installation plate by holding the cross bar.

[0021] Furthermore, a rubber pad is fixed to the bottom of the U-shaped supporting leg.

[0022] By adopting the above technical solution, the rubber pad is made of rubber material, and its surface has a large friction coefficient, which increases the friction force at the bottom of the U-shaped support leg and enhances the stability of the U-shaped support leg supporting the mounting plate.

[0023] In summary, the utility model has the following beneficial effects:

[0024] 1. In this application, when the air compressor needs to be maintained, the staff releases the fixing effect of the fixing assembly on the mounting plate and opens the inspection door, thereby pulling the mounting plate and the air compressor body out of the shell, and then rotates and opens the U-shaped support legs, so that the U-shaped support legs are perpendicular to the mounting plate and supported on the ground, thereby enhancing the stability of the mounting plate and the air compressor, thereby facilitating the maintenance of the air compressor and improving the efficiency of the maintenance of the air compressor;

[0025] 2. In the present application, the threaded rod is threadedly connected to the threaded groove, thereby fixing the mounting plate in the housing, which enhances the stability of the mounting plate in the housing. When the mounting plate needs to be pulled out, the staff twists the threaded rod through the star-shaped handle to make the threaded rod disengage from the threaded groove, thereby pulling out the mounting plate to perform maintenance and repair on the air compressor;

[0026] 3. In the present application, when the U-shaped supporting legs need to be opened after the mounting plate is pulled out, the staff rotates and opens the U-shaped supporting legs and then opens the limiting assembly, so that the limiting assembly limits the U-shaped supporting legs, so that the U-shaped supporting legs remain perpendicular to the mounting plate; when the U-shaped supporting legs need to be folded up, after closing the limiting assembly, the U-shaped supporting legs automatically close under the torsion of the first torsion spring, so as to facilitate the quick storage of the mounting plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0028] Figure 2 It is a schematic cross-sectional structure diagram of an embodiment of the utility model;

[0029] Figure 3 It is a schematic diagram of the cross-sectional structure of an embodiment of the utility model for highlighting the limit assembly;

[0030] Figure 4 It is a schematic diagram of the cross-sectional structure of the embodiment of the utility model for highlighting the first torsion spring;

[0031] Figure 5 yes Figure 4 The enlarged schematic diagram of point A in the middle;

[0032] Figure 6 It is a schematic diagram of the cross-sectional structure of the embodiment of the utility model for highlighting the limit block.

[0033] In the figure: 1. shell; 101. moving wheel; 102. limiting groove; 2. inspection door; 3. mounting plate; 31. U-shaped groove; 32. mounting groove; 33. threaded groove; 34. supporting groove; 35. arc groove; 36. flaring groove; 4. air compressor; 5. first rotating shaft; 6. U-shaped supporting leg; 61. receiving groove; 62. fixing groove; 7. fixing assembly; 71. threaded rod; 72. star-shaped handle; 8. first torsion spring; 9. limiting assembly; 91. second rotating shaft; 92. sleeve; 93. supporting rod; 94. spring; 10. second torsion spring; 11. limiting block; 12. ball; 13. cross bar; 14. rubber pad. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0035] like Figure 1-6As shown, an embodiment of the present application discloses an air compressor that is easy to maintain, including a housing 1, an inspection door 2, a mounting plate 3, an air compressor 4, a first rotating shaft 5, a U-shaped supporting leg 6 and a fixing assembly 7.

[0036] The shell 1 is a rectangular box structure, a moving wheel 101 is provided at the bottom of the shell 1, and one side of the shell 1 is open. The inspection door 2 is a rectangular plate-like structure, the inspection door 2 is hinged on the side wall of the shell 1, and the inspection door 2 is used to close the opening of the shell 1. The mounting plate 3 is a rectangular plate-like structure, the mounting plate 3 is slidingly connected to the inner bottom wall of the shell 1, a U-shaped groove 31 is provided at the bottom of the mounting plate 3, a mounting groove 32 is provided on the inner wall of the U-shaped groove 31, and a threaded groove 33 is provided on the side wall of the mounting plate 3. The air compressor 4 is an air compressor 4 commonly used in the prior art and suitable for the present embodiment, and the air compressor 4 is mounted on the upper surface of the mounting plate 3. The first rotating shaft 5 is a horizontally arranged round rod-like structure, and the first rotating shaft 5 is rotatably connected to the inner wall of the mounting groove 32. The U-shaped support leg 6 is a structure with a U-shaped cross section, and the U-shaped support leg 6 is fixedly sleeved on the first rotating shaft 5 and cooperates with the U-shaped groove 31.

[0037] The fixing assembly 7 is mounted on the housing 1 and is used to fix the mounting plate 3 in the housing 1. The fixing assembly 7 includes a threaded rod 71 and a star-shaped handle 72. The threaded rod 71 is a horizontally arranged rod-shaped structure. The threaded rod 71 is penetrated and arranged on the side wall of the housing 1 and is threadedly connected. The threaded rod 71 is threadedly connected to the thread groove 33. The star-shaped handle 72 is fixed to one end of the threaded rod 71 away from the mounting plate 3, and the axis of the star-shaped handle 72 coincides with the axis of the threaded rod 71.

[0038] The threaded rod 71 is threadably connected to the threaded groove 33, thereby fixing the mounting plate 3 in the housing 1, thereby enhancing the stability of the mounting plate 3 in the housing 1. When the air compressor 4 needs to be maintained, the staff twists the threaded rod 71 through the star-shaped handle 72 to disengage the threaded rod 71 from the contact with the threaded groove 33, thereby releasing the fixing effect of the fixing assembly 7 on the mounting plate 3 and opening the inspection door 2, thereby pulling the mounting plate 3 and the air compressor 4 body out of the housing 1, and then rotating and opening the U-shaped support leg 6 so that the U-shaped support leg 6 is perpendicular to the mounting plate 3 and supported on the ground, thereby enhancing the stability of the mounting plate 3 and the air compressor 4, thereby facilitating the maintenance of the air compressor 4 and improving the efficiency of the maintenance of the air compressor 4.

[0039] In order to facilitate the quick storage of the mounting plate 3, a first torsion spring 8 sleeved on the first rotating shaft 5 is arranged in the mounting groove 32, one end of the first torsion spring 8 is fixed to the inner wall of the mounting groove 32, and the other end of the first torsion spring 8 is fixed to the side wall of the U-shaped support leg 6. The side wall of the U-shaped support leg 6 is provided with a receiving groove 61, and the inner wall of the receiving groove 61 is provided with a fixing groove 62. A limit assembly 9 is installed on the U-shaped support leg 6 to prevent the U-shaped support leg 6 from closing automatically. The limit assembly 9 includes a second rotating shaft 91, a sleeve 92, a support rod 93 and a spring 94. The second rotating shaft 91 is a horizontally arranged round rod-shaped structure, and the second rotating shaft 91 is rotatably connected to the inner wall of the fixing groove 62. The sleeve 92 is a cylindrical structure with one end open, and the sleeve 92 is fixedly sleeved on the second rotating shaft 91. The support rod 93 is a rectangular rod-shaped structure, and the support rod 93 is slidably connected to the inner wall of the sleeve 92. The top wall of the U-shaped groove 31 is provided with a support groove 34 that cooperates with the support rod 93. The spring 94 is arranged in the sleeve 92, one end of the spring 94 is fixed to the inner bottom wall of the sleeve 92, and the other end of the spring 94 is fixed to the end of the support rod 93. When the U-shaped support leg 6 needs to be opened after the mounting plate 3 is pulled out, the staff rotates to open the U-shaped support leg 6 and then rotates to open the sleeve 92, and the support rod 93 pops out and abuts against the support groove 34 under the elastic force of the spring 94, thereby limiting the U-shaped support leg 6 and keeping the U-shaped support leg 6 perpendicular to the mounting plate 3; when the U-shaped support leg 6 needs to be folded after the maintenance of the air compressor 4 is completed, the staff presses the support rod 93 into the sleeve 92, and then rotates the sleeve 92 into the receiving groove 61, and the U-shaped support leg 6 is automatically closed under the torsion of the first torsion spring 8, thereby facilitating the rapid storage of the mounting plate 3.

[0040] In order to facilitate opening the limit assembly 9 to limit the U-shaped support leg 6, a second torsion spring 10 sleeved on the second rotating shaft 91 is provided in the fixed groove 62, one end of the second torsion spring 10 is fixed to the inner wall of the fixed groove 62, and the other end of the second torsion spring 10 is fixed to the side wall of the sleeve 92. After the U-shaped support leg 6 is rotated to open, the sleeve 92 automatically opens under the torsion force of the second torsion spring 10, so as to facilitate the staff to open the limit assembly 9 to limit the U-shaped support leg 6.

[0041] In order to prevent the mounting plate 3 from being completely separated from the shell 1, a limiting groove 102 is provided on the inner wall of the shell 1, and a limiting block 11 is fixed to the side wall of the mounting plate 3 which is slidably connected to the limiting groove 102. The limiting block 11 is slidably connected in the limiting groove 102, which limits the moving position of the mounting plate 3, thereby preventing the mounting plate 3 from being completely separated from the shell 1 and improving the safety of maintenance of the air compressor 4.

[0042] In order to make it easier for the staff to move the mounting plate 3 and the air compressor 4, an arc groove 35 is opened at the bottom of the mounting plate 3, and a ball 12 rollingly connected to the arc groove 35 is embedded in the inner bottom wall of the shell 1, and the gap distance between the bottom of the mounting plate 3 and the inner bottom wall of the shell 1 is 0.2-0.4mm. The ball 12 is rollingly connected to the arc groove 35, which reduces the friction between the mounting plate 3 and the shell 1, thereby reducing the sliding resistance of the mounting plate 3 and the shell 1, thereby making it easier for the staff to move the mounting plate 3 and the air compressor 4.

[0043] In order to facilitate pulling the mounting plate 3, a flared groove 36 is provided at the intersection between the upper surface of the mounting plate 3 and the side wall of the mounting plate 3, and a cross bar 13 is fixed to the inner wall of the flared groove 36. The setting of the cross bar 13 provides a fulcrum for pulling the mounting plate 3, thereby facilitating the staff to pull the mounting plate 3 by holding the cross bar 13.

[0044] In order to enhance the stability of the U-shaped support leg 6 supporting the mounting plate 3, a rubber pad 14 is fixed to the bottom of the U-shaped support leg 6. The rubber pad 14 is made of rubber material and has a large friction coefficient on its surface, which increases the friction force at the bottom of the U-shaped support leg 6, thereby enhancing the stability of the U-shaped support leg 6 supporting the mounting plate 3.

[0045] The operating principle of an air compressor that is easy to maintain in the present embodiment is as follows: the threaded rod 71 is threadedly connected to the threaded groove 33, thereby fixing the mounting plate 3 in the shell 1, thereby enhancing the stability of the mounting plate 3 in the shell 1. When the air compressor 4 needs to be maintained, the staff twists the threaded rod 71 through the star-shaped handle 72 to disengage the threaded rod 71 from the contact with the threaded groove 33, thereby releasing the fixing effect of the fixing component 7 on the mounting plate 3 and opening the inspection door 2, thereby pulling the mounting plate 3 and the air compressor 4 body out of the shell 1, and then rotating and opening the U-shaped support leg 6 to make the U-shaped support leg 6 perpendicular to the mounting plate 3 and support it on the ground, thereby enhancing the stability of the mounting plate 3 and the air compressor 4, thereby facilitating the maintenance of the air compressor 4 and improving the efficiency of the maintenance of the air compressor 4.

[0046] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. An air compressor that is easy to maintain, comprising a housing (1), characterized in that: One side of the shell (1) is open, and a maintenance door (2) for closing the opening of the shell (1) is hingedly connected to the side wall of the shell (1); a mounting plate (3) is slidably connected to the inner bottom wall of the shell (1); an air compressor (4) is mounted on the upper surface of the mounting plate (3); a U-shaped groove (31) is provided at the bottom of the mounting plate (3); a mounting groove (32) is provided on the inner wall of the U-shaped groove (31); a first rotating shaft (5) is rotatably connected to the inner wall of the mounting groove (32); a U-shaped supporting leg (6) matching the U-shaped groove (31) is fixedly sleeved on the first rotating shaft (5); and a fixing component (7) for fixing the mounting plate (3) in the shell (1) is mounted on the shell (1).

2. The air compressor that is easy to maintain according to claim 1 is characterized in that: The side wall of the mounting plate (3) is provided with a threaded groove (33), and the fixing assembly (7) comprises a threaded rod (71) which is arranged through the side wall of the housing (1) and is threadedly connected, and a star-shaped handle (72) which is fixed to an end of the threaded rod (71) away from the mounting plate (3), and the threaded rod (71) is threadedly connected to the threaded groove (33).

3. The air compressor that is easy to maintain according to claim 2 is characterized in that: A first torsion spring (8) sleeved on the first rotating shaft (5) is arranged in the installation groove (32), one end of the first torsion spring (8) is fixed to the inner wall of the installation groove (32), and the other end of the first torsion spring (8) is fixed to the side wall of the U-shaped supporting leg (6), and a limiting component (9) for preventing the U-shaped supporting leg (6) from automatically closing is installed on the U-shaped supporting leg (6).

4. The air compressor that is easy to maintain according to claim 3 is characterized by: The side wall of the U-shaped support leg (6) is provided with a receiving groove (61), the inner wall of the receiving groove (61) is provided with a fixing groove (62), the limiting assembly (9) comprises a second rotating shaft (91) rotatably connected to the inner wall of the fixing groove (62), a sleeve (92) fixedly sleeved on the second rotating shaft (91), a supporting rod (93) slidably connected to the inner wall of the sleeve (92), and a spring (94) arranged in the sleeve (92), one end of the spring (94) is fixed to the inner bottom wall of the sleeve (92), and the other end of the spring (94) is fixed to the end of the supporting rod (93), and the inner top wall of the U-shaped groove (31) is provided with a supporting groove (34) matched with the supporting rod (93).

5. The air compressor that is easy to maintain according to claim 4 is characterized in that: A second torsion spring (10) sleeved on the second rotating shaft (91) is arranged in the fixing groove (62), one end of the second torsion spring (10) is fixed to the inner wall of the fixing groove (62), and the other end of the second torsion spring (10) is fixed to the side wall of the sleeve (92).

6. The air compressor that is easy to maintain according to claim 5 is characterized by: The inner wall of the housing (1) is provided with a limiting groove (102), and the side wall of the mounting plate (3) is fixed with a limiting block (11) which is slidably connected to the limiting groove (102).

7. The air compressor that is easy to maintain according to claim 6 is characterized by: The bottom of the mounting plate (3) is provided with an arc groove (35), the inner bottom wall of the shell (1) is embedded with a ball (12) rollingly connected to the arc groove (35), and the gap distance between the bottom of the mounting plate (3) and the inner bottom wall of the shell (1) is 0.2-0.4 mm.

8. The air compressor that is easy to maintain according to claim 7 is characterized by: An expansion groove (36) is provided at the intersection between the upper surface of the mounting plate (3) and the side wall of the mounting plate (3), and a cross bar (13) is fixed to the inner wall of the expansion groove (36).

9. The air compressor that is easy to maintain according to claim 8 is characterized by: A rubber pad (14) is fixed to the bottom of the U-shaped supporting leg (6).