Limiting structure of shock pad of air compressor

Abstract

The utility model relates to the technical field of air compressors, in particular to a limit structure of a shock pad of an air compressor, which comprises a limit fixing stud and an upper limit plate arranged above a mounting support, the limit fixing stud penetrates through a mounting hole on the mounting support to be screwed into the shock pad, and the limit fixing stud is matched with the upper limit plate. The amplitude of the shock pad is limited. According to the utility model, the upper limiting plate is arranged above the mounting bracket, and a certain distance is formed between the upper limiting plate and the mounting bracket, so that the amplitude of the shock pad in the axial upward direction is limited; the amplitude of the shock pad in the radial direction and / or the axial downward direction is limited through the matching of the limiting fixing stud and the upper limiting plate in the radial direction and / or the axial downward direction; axial and radial amplitudes of the shock pad are limited, so that the amplitude of the shock pad cannot exceed a normal elastic deformation range of the shock pad, and the shock pad is prevented from losing efficacy due to violent bumping of a vehicle.

Description

Technical Field

[0001] The utility model relates to the technical field of air compressors, in particular to a limiting structure of a shock-absorbing pad of an air compressor. Background Art

[0002] Air compressors rely on the reciprocating motion of a piston to compress and discharge gas. The inertial force generated by this reciprocating motion, as well as the force exerted by the pulsating gas flow on the pipes, can cause vibration in the compressor. Currently, shock-absorbing pads are commonly installed at the compressor's mounting location to reduce the impact of this vibration on the mounting foundation (such as vehicle crossbeams, brackets, and baseplates).

[0003] Figure 1 A cross-sectional structural diagram of an air compressor shock absorber pad under the prior art is shown. In the vertical direction, the lower end of the shock absorber pad is connected to the mounting base, and the upper end is connected to the air compressor through a mounting bracket. When the air compressor vibrates, the direction of the vibration is uncertain, but it can be generally decomposed into radial and axial directions. The shock absorber pad can effectively reduce the vibration of the air compressor in the radial and axial directions. However, when the vehicle equipped with the air compressor is violently bumped, such as when passing through bad road conditions or other similar situations, the air compressor will vibrate violently. The air compressor drives the shock absorber pad to vibrate violently through the mounting bracket, causing the amplitude of the shock absorber pad to exceed the normal elastic deformation range of the shock absorber pad. Over time, the shock absorber pad will deform abnormally, such as the deformation cannot be restored, the rubber will tear, the metal inlay and the rubber will separate, etc., which will cause the shock absorber pad to fail. Utility Model Content

[0004] In order to solve the above technical problems, the present invention provides a new type of limiting structure for an air compressor shock-absorbing pad, including a limiting fixing stud and an upper limit plate arranged above the mounting bracket. The limiting fixing stud passes through the mounting hole on the mounting bracket and is screwed into the shock-absorbing pad. The limiting fixing stud and the upper limit plate cooperate to limit the amplitude of the shock-absorbing pad.

[0005] Furthermore, the limiting fixing stud includes a connected axial shoulder portion and a screw portion provided with an external thread, the shock-absorbing pad includes a shock-absorbing pad body and a metal inlay with an internal threaded hole located in the upper section of the shock-absorbing pad body, the screw portion passes through the mounting hole and is screwed into the internal threaded hole, and the lower end surface of the axial shoulder portion abuts against the upper end surface of the mounting bracket.

[0006] Furthermore, a shoulder hole is provided on the upper limit plate, the shoulder portion passes through the shoulder hole, and there is a certain distance between the outer wall of the shoulder portion and the inner wall of the shoulder hole.

[0007] Furthermore, the limiting fixing stud also includes a nut portion connected to the shaft shoulder portion, the nut portion is located above the upper positioning plate, and the nut portion cannot extend into the shaft shoulder hole.

[0008] Furthermore, it also includes a lower limit plate, which is a part of the installation base or is provided separately; the shock-absorbing pad is connected to the installation base through the lower limit plate.

[0009] Furthermore, it also includes a connecting plate, the upper limit plate and the lower limit plate are connected by the connecting plate, the upper limit plate, the connecting plate and the lower limit plate form a side U-shaped structure, and the opening direction of the side U-shaped structure is toward the air compressor.

[0010] Furthermore, it also includes a limiting pad, a card groove is provided on the outer peripheral surface of the limiting pad, and the side wall of the shoulder hole is inserted into the card groove; a limiting hole is provided on the limiting pad, and the shoulder part passes through the limiting hole, and there is a certain distance between the outer wall of the shoulder part and the inner wall of the limiting hole.

[0011] Furthermore, there is a certain distance between the lower end surface of the nut portion and the upper end surface of the limiting pad, and there is a certain distance between the upper end surface of the mounting bracket and the lower end surface of the limiting pad.

[0012] Furthermore, the upper end surface of the limiting pad and the lower end surface of the limiting pad are both uneven structures.

[0013] Furthermore, the edges of the limiting pad extend beyond the nut portion.

[0014] The utility model sets an upper limit plate above the mounting bracket with a certain distance between the upper limit plate and the mounting bracket, so that the upper limit plate can limit the mounting bracket in the axial upward direction, thereby limiting the amplitude of the shock-absorbing pad in the axial upward direction; the amplitude of the shock-absorbing pad in the radial direction and / or axial downward direction is limited by the cooperation of the limiting fixing stud and the upper limit plate in the radial direction and / or axial downward direction; by limiting the amplitude of the shock-absorbing pad in the axial and radial directions, the amplitude of the shock-absorbing pad will not exceed the normal elastic deformation range of the shock-absorbing pad, thereby avoiding failure of the shock-absorbing pad due to severe bumps of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the specific implementation methods of the present invention, the following is a brief introduction to the drawings required for use in the specific implementation methods. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a cross-sectional schematic diagram of an air compressor shock pad under the prior art;

[0017] Figure 2 This is a schematic diagram of Example 1 of the utility model applied to an air compressor;

[0018] Figure 3 This is a schematic cross-sectional view of Example 1 of the present utility model;

[0019] Figure 4 Schematic diagram of the limiting pad of Example 1 of the present utility model.

[0020] The reference numerals in the figure are as follows: 1-air compressor; 2-mounting bracket; 21-mounting hole; 3-upper limit plate; 4-limit fixing stud; 41-nut portion; 42-shaft shoulder portion; 43-screw portion; 5-lower limit plate; 6-shock absorber pad; 61-shock absorber pad body; 62-inner threaded hole; 63-lower cavity; 7-connecting plate; 8-limit pad; 81-slot; 82-limiting hole; 83-protrusion; 84-recessed portion; 9-support block; 91-first inner threaded hole; 92-elastic body; 10-reinforcement rib. DETAILED DESCRIPTION

[0021] The following is a clear and complete description of the contents of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by ordinary technicians in this field without making any creative work are all within the scope of protection of the present invention. Example 1

[0022] like Figure 2 and Figure 3 As shown, this embodiment discloses a limiting structure of an air compressor shock-absorbing pad, including: a limiting fixing stud 4 and an upper positioning plate 3 arranged above the mounting bracket 2, the limiting fixing stud 4 passes through the mounting hole 21 on the mounting bracket 2 and is screwed into the shock-absorbing pad 6, and the limiting fixing stud 4 and the upper positioning plate 3 cooperate to limit the amplitude of the shock-absorbing pad 6.

[0023] In this embodiment, the limiting fixing stud 4 is screwed into the shock-absorbing pad 6 through the mounting hole 21 on the mounting bracket 2, so that the upper end of the shock-absorbing pad 6 is fixed on the mounting bracket 2, so that when the air compressor 1 vibrates, the shock-absorbing pad 6 and the limiting fixing stud 4 are driven to vibrate simultaneously through the mounting bracket 2.

[0024] The structure of the upper limit plate 3 is varied, and it can be a single plate, a frame or a bottom plate of a three-dimensional structure. Preferably, it is a single plate structure connected to the installation base. The upper limit plate 3 and the installation base can be connected in a way that the upper limit plate 3 and the installation base are directly connected by bolts, or the connection method described in detail in the following content can be used, which will not be listed here for the time being; the upper limit plate 3 is arranged above the mounting bracket 2, which means that there is a certain distance between the upper limit plate 3 and the mounting bracket 2. When the air compressor 1 vibrates, the mounting bracket 2 drives the limiting fixing stud 4 and the shock-absorbing pad 6 to vibrate at the same time. When the upper end face of the mounting bracket 2 abuts against the lower end face of the upper limit plate 3, the vibration of the mounting bracket 2 is limited, and the upper limit plate 3 realizes the mounting bracket 2. The limit is placed in the axial upward direction, thereby reducing the amplitude of the mounting bracket 2 and the shock-absorbing pad 6 in the axial upward direction, thereby limiting the amplitude of the shock-absorbing pad 6 in the axial upward direction; at the same time, in this embodiment, the limiting fixing stud 4 and the upper limit plate 3 are coordinated, so that when the mounting bracket 2 drives the limiting fixing stud 4 and the shock-absorbing pad 6 to vibrate, the upper limit plate 3 limits the limiting fixing stud 4 in the radial direction and / or the axial downward direction, thereby limiting the amplitude of the shock-absorbing pad 6 in the radial direction and / or the axial downward direction; in this embodiment, by limiting the axial and radial amplitude of the shock-absorbing pad 6, the amplitude of the shock-absorbing pad 6 does not exceed the normal elastic deformation range of the shock-absorbing pad 6, thereby avoiding failure of the shock-absorbing pad 6 due to severe shaking of the vehicle.

[0025] Furthermore, how the position-limiting fixing stud 4 passes through the mounting hole 21 on the mounting bracket 2 and is screwed into the shock-absorbing pad 6 is preferably achieved by adopting the following technical solution.

[0026] For details, see Figure 2 and Figure 3 The limiting fixing stud 4 includes a connected axial shoulder portion 42 and a screw portion 43 with an external thread. The shock-absorbing pad 6 includes a shock-absorbing pad body 61 and a metal inlay with an internal threaded hole 62 located in the upper section of the shock-absorbing pad body 61. The screw portion 43 passes through the mounting hole 21 and is screwed into the internal threaded hole 62. The lower end surface of the axial shoulder portion 42 abuts against the upper end surface of the mounting bracket 2. In other words, after the limiting fixing stud 4 is tightened, the shock-absorbing pad body 61 is tightly fixed to the mounting bracket 2 through the axial shoulder portion 42.

[0027] In this embodiment, the mounting hole 21 can be a threaded hole or a plain hole. For secure fixation, it is best if the screw portion 43 of the position-limiting fixing stud 4 just passes through the mounting hole 21 .

[0028] Furthermore, how to limit the amplitude of the shock-absorbing pad 6 in the radial direction by cooperating with the limiting fixing stud 4 and the upper limit plate 3 is preferably achieved by adopting the following technical solution.

[0029] For details, see Figure 2 and Figure 3 A shoulder hole is provided on the upper limit plate 3, and the shoulder portion 42 passes through the shoulder hole. There is a certain distance between the outer wall of the shoulder portion 42 and the inner wall of the shoulder hole.

[0030] When the air compressor 1 vibrates, the mounting bracket 2 drives the limiting fixing stud 4 and the shock-absorbing pad 6 to vibrate at the same time. When the outer wall of the shoulder portion 42 of the limiting fixing stud 4 abuts the inner wall of the shoulder hole, the vibration of the limiting fixing stud 4 is limited, and the upper limit plate 3 limits the radial direction of the limiting fixing stud 4, reducing the radial amplitude of the mounting bracket 2 and the shock-absorbing pad 6, thereby limiting the radial amplitude of the shock-absorbing pad 6.

[0031] Furthermore, how to limit the amplitude of the shock-absorbing pad 6 in the axial downward direction by cooperating with the limiting fixing stud 4 and the upper limit plate 3 is preferably achieved by adopting the following technical solution.

[0032] For details, see Figure 2 and Figure 3 The limiting fixing stud 4 also includes a nut portion 41 connected to the shaft shoulder portion 42. The nut portion 41 is located above the upper limit plate 3, and the nut portion 41 cannot extend into the shaft shoulder hole.

[0033] When the air compressor 1 vibrates, the mounting bracket 2 drives the limiting fixing stud 4 and the shock-absorbing pad 6 to vibrate simultaneously. When the nut portion 41 of the limiting fixing stud 4 abuts the upper limit plate 3 located below it, the nut portion 41 cannot extend into the shoulder hole and is therefore always restricted above the upper limit plate 3. The upper limit plate 3 limits the limiting fixing stud 4 in the axial downward direction, thereby reducing the amplitude of the mounting bracket 2 and the shock-absorbing pad 6 in the axial downward direction, thereby limiting the amplitude of the shock-absorbing pad 6 in the axial downward direction. It should be understood that there are multiple ways to prevent the nut portion 41 from extending into the shoulder hole. Preferably, the nut portion 41 and the shoulder hole are set to be coaxial, and the outer diameter of the nut portion 41 is larger than the inner diameter of the shoulder hole. The limiting fixing stud 4 in this embodiment includes a nut portion 41, a shoulder portion 42 and a screw portion 43 provided with a thread. The diameter of the shoulder portion 42 is larger than the diameter of the screw portion 43. The limiting fixing stud 4 can be made of a hexagonal cylindrical head shoulder screw, or can be customized using non-standard methods.

[0034] Furthermore, how to connect the shock-absorbing pad 6 to the installation base is preferably achieved by adopting the following technical solution.

[0035] For details, see Figure 2 and Figure 3 , also includes a lower limit plate 5, which is a part of the installation base or is set separately; the shock-absorbing pad 6 is connected to the installation base through the lower limit plate 5.

[0036] There are three options for connecting the shock-absorbing pad 6 to the mounting base via the lower limit plate 5, as follows: In the first option, the lower limit plate 5 is part of the mounting base, that is, the lower limit plate 5 is part of the vehicle's crossbeam and base. In this case, the connection between the shock-absorbing pad 6 and the lower limit plate 5 realizes the connection between the shock-absorbing pad 6 and the mounting base. In the second option, the lower limit plate 5 is set separately, and the shock-absorbing pad 6, the lower limit plate 5, and the mounting base are connected together in sequence from top to bottom by bolts. In the third option, the lower limit plate is set separately, and the shock-absorbing pad 6 is connected to the lower limit plate 5, and the lower limit plate 5 is connected to the mounting base to realize the connection between the shock-absorbing pad 6 and the mounting base.

[0037] In the third solution in which the shock-absorbing pad 6 is connected to the mounting base through the lower limit plate 5, the lower limit plate 5 is connected to the mounting base. Specifically, the lower limit plate 5 is connected to the mounting base through the support block 9. The support block 9 passes through the lower limit plate 5 to reach the lower cavity 63 of the shock-absorbing pad 6. The support block 9 and the lower limit plate 5 are connected by welding. A first internal threaded hole 91 is provided on the support block 9. The support block 9 is connected to the mounting base by the cooperation of the bolt and the first internal threaded hole 91 of the support block 9; preferably, the top of the support block 9 is wrapped with an elastomer 92. When the air compressor 1 vibrates, the mounting bracket 2 drives the limit fixing screw The column 4 and the shock-absorbing pad 6 vibrate simultaneously, and when the top end of the lower cavity 63 vibrates toward the direction of the elastomer 92, when the top end of the lower cavity 63 abuts against the elastomer 92 with a certain height, the vibration of the shock-absorbing pad 6 is limited by the elastomer 92, thereby limiting the amplitude of the shock-absorbing pad 6 in the axial downward direction; in this embodiment, the cooperation between the limiting fixing stud 4 and the upper limiting plate 3 can limit the amplitude of the shock-absorbing pad 6 in the axial downward direction, and the elastomer 92 can also limit the amplitude of the shock-absorbing pad 6 in the axial downward direction, thereby realizing a double limitation on the axial downward amplitude of the shock-absorbing pad 6, and further increasing the stability and service life of this limiting structure.

[0038] Furthermore, how the upper limit plate 3 is connected to the installation base is preferably achieved by adopting the following technical solution.

[0039] For details, see Figure 2 and Figure 3 , and also includes a connecting plate 7, the upper limit plate 3 and the lower limit plate 5 are connected by the connecting plate 7, the upper limit plate 3, the connecting plate 7 and the lower limit plate 5 form a side U-shaped structure, and the opening direction of the side U-shaped structure is toward the air compressor 1.

[0040] The upper limit plate 3, connecting plate 7, and lower limit plate 5 form a side U-shaped structure, so that the upper limit plate 3, connecting plate 7, and lower limit plate 5 semi-enclose the shock-absorbing pad 6. This can reduce the accumulation of dust, grease, etc. on the surface of the shock-absorbing pad, delay the expansion, aging, and deterioration of the shock-absorbing pad body 61, and thus extend the aging life of the shock-absorbing pad 6. At this time, the upper limit plate 3 is connected to the installation base through the lower limit plate 5, which facilitates installation and removal.

[0041] Reinforcing ribs 10 are further provided between the upper limiting plate 3 and the connecting plate 7 and between the lower limiting plate 5 and the connecting plate 7 to enhance the strength of the side U-shaped structure in this embodiment.

[0042] Furthermore, how to reduce the impact force between the upper limit plate 3 and the limiting fixing stud 4 during the limiting process is preferably achieved by adopting the following technical solution.

[0043] For details, see Figure 3 and Figure 4 , and also includes a limiting pad 8, a card groove 81 is provided on the outer peripheral surface of the limiting pad 8, and the side wall of the shoulder hole is inserted into the card groove 81; a limiting hole 82 is provided on the limiting pad 8, and the shoulder portion 42 passes through the limiting hole 82, and there is a certain distance between the outer wall of the shoulder portion 42 and the inner wall of the limiting hole 82.

[0044] The limiting pad 8 in this embodiment is made of an elastic material, preferably rubber. When the air compressor 1 vibrates, the mounting bracket 2 drives the limiting fixing stud 4 and the shock-absorbing pad 6 to vibrate simultaneously. When the shoulder portion 42 of the limiting fixing stud 4 moves toward the shoulder hole of the upper limit plate 3 and abuts the side wall of the limiting hole 82 of the limiting pad 8, the limiting pad 8 at the side wall of the limiting hole 82 deforms, absorbing the vibration of the shoulder portion 42, thereby reducing the impact force between the upper limit plate 3 and the limiting fixing stud 4.

[0045] For details, see Figure 3 and Figure 4 There is a certain distance between the lower end surface of the nut portion 41 and the upper end surface of the limiting pad 8; there is a certain distance between the upper end surface of the mounting bracket 2 and the lower end surface of the limiting pad 8.

[0046] When the air compressor 1 vibrates, the mounting bracket 2 drives the limit fixing stud 4 and the shock absorbing pad 6 to vibrate at the same time. When the nut portion 41 of the limit fixing stud 4 moves toward the upper end surface of the upper limit plate 3 and the nut portion 41 abuts against the upper end surface of the limit pad 8, the limit pad 8 is deformed, absorbing the vibration of the nut portion 41, thereby reducing the impact force between the upper limit plate 3 and the limit fixing stud 4.

[0047] When the air compressor 1 vibrates, the mounting bracket 2 drives the limit fixing stud 4 and the shock-absorbing pad 6 to vibrate at the same time. When the mounting bracket 2 moves toward the lower end surface of the upper limit plate 3 and the mounting bracket 2 abuts against the lower end surface of the limit pad 8, the limit pad 8 deforms, absorbing the vibration of the mounting bracket 2, thereby reducing the impact force between the upper limit plate 3 and the mounting bracket 2.

[0048] For details, see Figure 3 and Figure 4The upper end surface of the limiting pad 8 and the lower end surface of the limiting pad 8 are both uneven structures, and the uneven structure includes a plurality of raised portions 83 and a plurality of recessed portions 84, and the raised portions 83 and the recessed portions 84 are arranged at intervals. When the upper end surface of the limiting pad 8 and / or the lower end surface of the limiting pad 8 are subjected to vibration, the buffering effect of the limiting pad 8 on the 'impact force between the upper limit plate 3 and the limiting fixing stud 4' and / or the 'impact force between the upper limit plate 3 and the mounting bracket 2' is further improved, thereby increasing the stability of the air compressor 1 on bumpy road conditions, so that it will not vibrate violently when the vehicle is violently bumpy.

[0049] For details, see Figure 3 and Figure 4 The edges of the limiting pad 8 extend beyond the nut portion 41. When the air compressor 1 vibrates, the direction of the vibration is uncertain. The edges of the limiting pad 8 extend beyond the nut portion 41, so that no matter what the vibration direction of the air compressor 1 is, the limiting pad 8 can always buffer the nut portion 41, thereby avoiding rigid impact between the nut portion 41 and the upper limit plate 3.

[0050] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A limiting structure for an air compressor shock pad, characterized in that: It comprises a limiting fixing stud (4) and an upper limit plate (3) arranged above the mounting bracket (2); the limiting fixing stud (4) passes through the mounting hole (21) on the mounting bracket (2) and is screwed into the shock-absorbing pad (6); the limiting fixing stud (4) and the upper limit plate (3) cooperate to limit the amplitude of the shock-absorbing pad (6).

2. The limiting structure of the air compressor shock pad according to claim 1, characterized in that: The limiting fixing stud (4) includes a connected axial shoulder portion (42) and a screw portion (43) provided with an external thread. The shock-absorbing pad (6) includes a shock-absorbing pad body (61) and a metal inlay with an internal threaded hole (62) located in the upper section of the shock-absorbing pad body (61). The screw portion (43) passes through the mounting hole (21) and is screwed into the internal threaded hole (62). The lower end surface of the axial shoulder portion (42) abuts against the upper end surface of the mounting bracket (2).

3. The limiting structure of the air compressor shock pad according to claim 2, characterized in that: A shoulder hole is provided on the upper limit plate (3), the shoulder portion (42) passes through the shoulder hole, and there is a certain distance between the outer wall of the shoulder portion (42) and the inner wall of the shoulder hole.

4. The limiting structure of the air compressor shock-absorbing pad according to claim 3, characterized in that: The limiting fixing stud (4) further comprises a nut portion (41) connected to the shaft shoulder portion (42), wherein the nut portion (41) is located above the upper limit plate (3), and the nut portion (41) cannot extend into the shaft shoulder hole.

5. The limiting structure of the air compressor shock-absorbing pad according to any one of claims 1 to 4, characterized in that: It also includes a lower limit plate (5), which is a part of the installation base or is provided separately; the shock-absorbing pad (6) is connected to the installation base via the lower limit plate (5).

6. The limiting structure of the air compressor shock-absorbing pad according to claim 5, characterized in that: It also includes a connecting plate (7), the upper limit plate (3) and the lower limit plate (5) are connected via the connecting plate (7), the upper limit plate (3), the connecting plate (7) and the lower limit plate (5) form a side U-shaped structure, and the opening direction of the side U-shaped structure faces the air compressor (1).

7. The limiting structure of the air compressor shock-absorbing pad according to claim 4, characterized in that: It also includes a limiting pad (8), wherein a slot (81) is provided on the outer peripheral surface of the limiting pad (8), and the side wall of the shaft shoulder hole is inserted into the slot (81); a limiting hole (82) is provided on the limiting pad (8), and the shaft shoulder portion (42) passes through the limiting hole (82), and there is a certain distance between the outer wall of the shaft shoulder portion (42) and the inner wall of the limiting hole (82).

8. The limiting structure of the air compressor shock-absorbing pad according to claim 7, characterized in that: There is a certain distance between the lower end surface of the nut portion (41) and the upper end surface of the limiting pad (8), and there is a certain distance between the upper end surface of the mounting bracket (2) and the lower end surface of the limiting pad (8).

9. The limiting structure of the air compressor shock-absorbing pad according to claim 7, characterized in that: The upper end surface of the limiting pad (8) and the lower end surface of the limiting pad (8) both have an uneven structure.

10. The limiting structure of the air compressor shock-absorbing pad according to claim 7, characterized in that: The edges of the limiting pad (8) extend beyond the nut portion (41).

Images