Linear driving dustproof device and push rod

Abstract

The utility model provides a linear driving dustproof device and a push rod, and relates to the technical field of push rod dust prevention, the linear driving dustproof device comprises at least two groups of sealing modules, a corrugated pipe and a positive pressure module, the sealing modules are respectively arranged at two ends of the corrugated pipe, and a first sealing ring is arranged between each sealing module and the corrugated pipe; the corrugated pipe is provided with a first installation groove for installation of the first sealing ring, the sealing module is provided with a boss used for pressing the first sealing ring, the first sealing ring can be fully extruded and fixed while the first installation groove and the boss are clamped and matched, the positive pressure module comprises an air pump, and the air pump is connected with the interior of the corrugated pipe and used for inflating the interior of the corrugated pipe. Positive pressure in the corrugated pipe is kept, and dust is prevented from entering.

Description

TECHNICAL FIELD

[0001] The utility model relates to push rod dustproof technical field especially a linear drive dustproof device and push rod. BACKGROUND

[0002] The photovoltaic tracker needs electric push rod or hydraulic push rod to drive, carries out the angle adjustment of photovoltaic module, and the electric push rod and hydraulic push rod are all linear motion mechanism, inside is lubricating grease and hydraulic oil, is isolated with the outside through sealing washer, the screw sheath of electric push rod, the piston rod of hydraulic push rod will be exposed in the environment along with the telescopic movement, and dust will be accumulated on the piston rod and screw sheath, sealing washer cannot reach completely dustproof, once dust accumulates, will damage the surface of piston rod and screw sheath, influence normal work, the conventional dustproof sheath does not have the special design for this scene, and the use effect is poor, in view of the above-mentioned defects, the present application is proposed. SUMMARY

[0003] The utility model discloses a linear drive dustproof device and push rod, solve the dustproof effect of electric push rod or hydraulic push rod of present stage deficiency, the problem of long time dust accumulation influence normal work.

[0004] To solve the above problem, the utility model provides a linear drive dustproof device, including sealing module, bellows and positive pressure module, sealing module at least sets two groups, installs respectively in the both ends of bellows, and is provided with sealing washer no. 1 between sealing module and bellows, the mounting groove no. 1 of sealing washer no. 1 installation is provided on the bellows, the boss for pressing sealing washer no. 1 is provided on the sealing module, both realize the clamping cooperation, and still can extrude and fix sealing washer no. 1 sufficiently, the positive pressure module includes air pump, the air pump is connected with the inside of bellows, is used to inflate the inside of bellows, keeps the positive pressure of the inside of bellows, avoids the dust and enters.

[0005] According to the utility model one embodiment, the positive pressure module still includes pressure switch, the pressure switch is used for detecting the pressure of the inside of bellows, the air pump is electrically connected with pressure switch, when the pressure of the inside of bellows is lower than set value, the air pump starts to inflate.

[0006] According to the utility model one embodiment, the sealing module is provided with sealing washer no. 2, the mounting groove no. 2 for sealing washer no. 2 installation is provided on the sealing module, and sealing washer no. 2 is mainly used to realize the sealing of the outer surface of piston rod and hydraulic cylinder barrel of sealing module.

[0007] According to the utility model one embodiment, the sealing module is provided with the positioning groove for the positioning installation of bellows end.

[0008] According to the utility model one embodiment, the positioning groove is located between mounting groove no. 2 and boss.

[0009] According to an embodiment of the utility model, the sealing ring one and / or sealing ring two adopt rectangular section.

[0010] According to an embodiment of the utility model, the inner and outer surfaces of the sealing ring one and / or sealing ring two are provided with multiple annular flanges of semicircular section.

[0011] According to an embodiment of the utility model, the sealing module is combined by at least two groups of sub-modules.

[0012] According to an embodiment of the utility model, the sub-module is provided with fastening holes for mounting bolt assemblies, and the sub-modules are connected through bolt assemblies.

[0013] A push rod, the push rod is electric push rod or hydraulic push rod, including linear drive dustproof device described above.

[0014] The utility model discloses the beneficial effect is, through the setting of sealing module, bellows, positive pressure module and sealing ring, utilize bellows connection piston rod and hydraulic cylinder cylinder, cooperate sealing module and sealing ring, realize the dustproof effect of full sealing of piston rod position, and positive pressure module can also make the bellows form positive pressure in, and the dust in environment is difficult to enter the inside of bellows, further improve dustproof effect. BRIEF DESCRIPTION OF DRAWINGS

[0015] The utility model is further explained below in combination with the drawings and examples.

[0016] Figure 1 It is overall structural schematic drawing for linear drive dustproof device;

[0017] Figure 2 It is structure schematic drawing for bellows;

[0018] Figure 3 It is sub-module structure schematic drawing for sealing module;

[0019] Figure 4 It is cross-sectional view of linear drive dustproof device;

[0020] Figure 5 It is sealing ring structure schematic drawing;

[0021] Figure 6 It is sealing ring section schematic drawing. DETAILED DESCRIPTION

[0022] The following description is only used to disclose the utility model so that those skilled in the art can implement the utility model. The examples in the following description are only as examples, and other obvious modifications can be thought of by those skilled in the art. The basic principles of the utility model defined in the following description can be applied to other embodiments, modification schemes, improvement schemes, equivalent schemes and other schemes without departing from the spirit and scope of the utility model.

[0023] Example 1

[0024] A linear driving dustproof device and a push rod, as shown in Figure 1 , Figure 2 , comprising a sealing module 1, a corrugated pipe 2, a positive pressure module 3 and a sealing ring 4.

[0025] The sealing ring 4 comprises a sealing ring one 42 and a sealing ring two 41, and the sealing ring 4, as shown in Figure 5 , Figure 6 , adopts a rectangular section, and a plurality of annular flanges 43 with semicircular sections are arranged on the inner and outer surfaces, which play a role in enhancing sealing.

[0026] The corrugated pipe 2 is installed on the screw sheath of the piston rod at one end and on the cylinder barrel of the hydraulic cylinder at the other end, and the corrugated pipe 2 is provided with a mounting groove one 21 for installing the sealing ring one 42 at both ends, so that the sealing ring one 42 does not slip.

[0027] The sealing module 1 is provided with two groups, which are installed at both ends of the corrugated pipe 2, as shown in Figure 3 The sealing module 1 is composed of two groups of half-ring-shaped sub-modules 11, and the sub-modules 11 are provided with fastening holes 14 for installing bolt assemblies, and the sub-modules 11 are connected by the bolt assemblies.

[0028] The sealing module 1 is pressed at the installation position of the sealing ring one 42, and the inner wall of the sealing module 1 is provided with an annular boss 12 for pressing the sealing ring one 42, as shown in Figure 4 The boss 12 is in clamping cooperation with the mounting groove one 21, and the sealing ring one 42 is fully extruded and fixed.

[0029] The sealing module 1 is provided with the sealing ring two 41, and the sealing module 1 is provided with a mounting groove two 13 for installing the sealing ring two 41, and the sealing ring two 41 is mainly used to realize the sealing of the sealing module 1 and the outer surface of the piston rod and the cylinder barrel of the hydraulic cylinder.

[0030] The sealing module 1 is provided with a positioning groove 15 for positioning and installing the end of the corrugated pipe 2, and the positioning groove 15 is located between the mounting groove two 13 and the boss 12, which ensures the dustproof effect.

[0031] The positive pressure module 3 is installed outside the corrugated pipe 2, the positive pressure module 3 comprises an air pump 31 and a pressure switch 32, the air pump and the pressure switch are connected through a vent hole and the inside of the corrugated pipe 2, the pressure setting value of the pressure switch ranges from 5 to 50 pa, the pressure switch can detect the pressure value inside the corrugated pipe, when the pressure value is less than the setting value, the air pump is started to inflate the inside of the corrugated pipe, when the pressure value reaches the setting value, the air pump stops working. The inside of the corrugated pipe ensures the positive pressure value relative to the environment, which can ensure that the dust in the environment cannot enter the inside of the corrugated pipe.

[0032] Preferably, the air pump 31 has two working modes: automatic control of the pressure switch and the air pump interlocking; manual control of the air pump start-stop.

[0033] The positive pressure module 3 also has the effect of cleaning, can loosen the sealing module 1, manually controls the air pump to start, inflates the inside of the corrugated pipe, and realizes the cleaning of the inside of the corrugated pipe.

[0034] A push rod, the push rod is an electric push rod or a hydraulic push rod, comprising the linear drive dustproof device, the push rod can be applied to a photovoltaic tracking system.

[0035] It should be understood by those skilled in the art that the above description and the embodiments of the utility model shown in the drawings are only as examples and do not limit the utility model. The purpose of the utility model has been completely and effectively realized. The function and structural principle of the utility model have been displayed and explained in the embodiments, and the implementation of the utility model can be any deformation and modification without departing from the principle.

Claims

1. A linear drive dust prevention device, characterized in that: The invention comprises a sealing module (1), a bellows (2) and a positive pressure module (3), wherein at least two groups of the sealing modules (1) are provided and are both installed on the bellows (2), and a sealing ring (42) is provided between the sealing module (1) and the bellows (2), a mounting groove (21) for mounting the sealing ring (42) is provided on the bellows (2), a boss (12) for pressing the sealing ring (42) is provided on the sealing module (1), and the positive pressure module (3) comprises an air pump (31), which is connected to the inside of the bellows (2) and is used to inflate the inside of the bellows (2).

2. The linear drive dust-proof device according to claim 1, characterized in that: The positive pressure module (3) further comprises a pressure switch (32), wherein the pressure switch (32) is used to detect the internal pressure of the bellows (2), and the air pump (31) is electrically connected to the pressure switch (32).

3. The linear drive dust prevention device according to claim 1 or 2, characterized in that: The sealing module (1) is provided with a second sealing ring (41), and the sealing module (1) is provided with a second mounting groove (13) for mounting the second sealing ring (41).

4. The linear drive dust prevention device according to claim 3, characterized in that: The sealing module (1) is provided with a positioning groove (15) for positioning and installing the end of the bellows (2).

5. The linear drive dust prevention device according to claim 4, characterized in that: The positioning groove (15) is located between the second mounting groove (13) and the boss (12).

6. The linear drive dust prevention device according to claim 3, characterized in that: The sealing ring 1 (42) and / or the sealing ring 2 (41) have a rectangular cross section.

7. The linear drive dust prevention device according to claim 6, characterized in that: The inner and outer surfaces of the sealing ring 1 (42) and / or the sealing ring 2 (41) are provided with an annular flange (43) with a semicircular cross-section.

8. The linear drive dust prevention device according to claim 6 or 7, characterized in that: The sealing module (1) is composed of at least two groups of submodules (11).

9. The linear drive dust prevention device according to claim 8, characterized in that: The submodules (11) are provided with fastening holes (14) for installing bolt assemblies, and the submodules (11) are connected via the bolt assemblies.

10. A push rod, characterized in that: The invention comprises the linear drive dust-proof device according to any one of claims 1 to 9.

Images