Waterproof and dustproof sealing type universal shaft

Abstract

The utility model discloses a waterproof and dustproof sealing type cardan shaft which comprises a first shaft rod, the two ends of the first shaft rod are connected with auxiliary assemblies, the opposite ends of the auxiliary assemblies are provided with first sealing assemblies, one ends of the auxiliary assemblies are provided with movable assemblies, and the movable assemblies are provided with second sealing assemblies. A reliable sealing barrier can be formed by the cardan shaft through the first sealing assembly arranged on the auxiliary assembly, and external pollutants such as water, dust and soil can be effectively prevented from entering the cardan shaft from the joint of the first shaft rod and the auxiliary assembly; the sealing performance of the universal shaft can be further enhanced, pollutants are prevented from entering the universal joint, friction between the bearing and the shaft rod caused by water, dust and the like is prevented from being increased, abrasion of parts is reduced, and therefore the service life of the universal shaft is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to universal shaft technical field, concretely relates to a waterproof dustproof sealing type universal shaft. BACKGROUND

[0002] The waterproof dustproof sealing type universal shaft is a mechanical component specially designed to work in harsh environments. It not only can transmit torque and rotary motion, but also can effectively prevent external contaminants such as water, dust, and soil from entering its interior, thereby prolonging the service life and maintaining high-efficiency working performance.

[0003] However, the existing universal shaft has deficiencies in sealing performance. Since its working environment is usually harsh, external contaminants such as water, dust, and soil can easily enter the interior of the universal shaft, causing damage to its internal structure and affecting its normal operation. For example, after water and dust enter the interior of the universal shaft, it can easily cause increased friction between the bearing and the shaft rod, and even cause corrosion, thereby shortening the service life of the universal shaft.

[0004] Currently, there is no effective solution to the problems in the related art. SUMMARY

[0005] To overcome the above technical problems existing in the prior art, the utility model provides a waterproof dustproof sealing type universal shaft.

[0006] Therefore, the utility model adopts the specific technical scheme as follows:

[0007] A waterproof dustproof sealing type universal shaft, comprising a shaft rod one, the both ends of the shaft rod one are connected with auxiliary assemblies, the auxiliary assemblies are provided with sealing assemblies one at opposite ends, the sealing assemblies one comprise sealing seats fixed at one end of the auxiliary assemblies, the inner wall of the sealing seats is installed with sealing telescopic covers, the both ends of the sealing telescopic covers are installed with sealing covers two, the inner wall of the sealing covers two is threadedly connected with the surface of the sealing seats, one end of the auxiliary assemblies is installed with movable assemblies, the movable assemblies are provided with sealing assemblies two.

[0008] Further, in order to better assist in protecting the universal shaft, the auxiliary assemblies comprise auxiliary blocks fixedly connected at both ends of the shaft rod one, the periphery of the auxiliary blocks is connected with shaft rods two, the inner wall of the shaft rods two is threadedly connected with sealing covers one, the middle position of the sealing covers one is in contact with the surface of the shaft rod one, the opposite end of the shaft rods two is fixedly connected with the sealing seats.

[0009] Further, in order to better universal shaft use, the movable assembly includes the universal joint fork one fixedly installed at one end of the shaft rod two, a plurality of mounting holes are formed in the universal joint fork one, cross shafts are arranged on the inner walls of the mounting holes, and needle bearings are installed at the four ends of the cross shafts, wherein two of the needle bearings are connected with the inner walls of the mounting holes, and the surfaces of the other two needle bearings are connected with the universal joint fork two.

[0010] Further, in order to better waterproof and dustproof of the universal shaft, the sealing assembly two includes the sealing sleeve arranged on the universal joint fork two and the universal joint fork one, a rubber protective cover is installed on the sealing sleeve, sealing rings are installed at both ends of the rubber protective cover, and sealing screws are threadedly connected with the sealing rings.

[0011] Further, a plurality of fixing holes are formed in one side of the universal joint fork two, and fixing screws are installed on the inner walls of the fixing holes.

[0012] Further, an injection hole is formed in the surface of the shaft rod two, and a sealing plug is threadedly connected with the inner wall of the injection hole.

[0013] The beneficial effects of the present application are as follows:

[0014] (1), through the sealing assembly one arranged in the auxiliary assembly, a reliable sealing barrier can be formed in the universal shaft, which can effectively prevent external water, dust, soil and other pollutants from entering the universal shaft from the connection between the shaft rod one and the auxiliary assembly, and the sealing assembly two arranged in the movable assembly can further enhance the sealing performance of the universal shaft, prevent the pollutants from entering the universal joint, and avoid the increase of the friction between the bearing and the shaft rod caused by water and dust, thereby reducing the wear of the components and prolonging the service life of the universal shaft.

[0015] (2), through the auxiliary assembly arranged in the shaft rod one, external pollutants can be effectively prevented from entering the universal shaft through the gap between the shaft rod one and the shaft rod two, and the movable assembly arranged in the auxiliary assembly enables the universal shaft to transmit torque and rotary motion at different angles. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0017] Figure 1 is a main structure schematic diagram of a waterproof and dustproof sealing type universal shaft according to the embodiments of the present application;

[0018] Figure 2It is a structure schematic view of a shaft rod one of a waterproof and dustproof sealing type universal shaft according to an embodiment of the utility model;

[0019] Figure 3 It is an auxiliary assembly and a movable assembly structure schematic view of a waterproof and dustproof sealing type universal shaft according to an embodiment of the utility model;

[0020] Figure 4 It is a sealing assembly one structure schematic view of a waterproof and dustproof sealing type universal shaft according to an embodiment of the utility model;

[0021] Figure 5 It is a sealing assembly two structure schematic view of a waterproof and dustproof sealing type universal shaft according to an embodiment of the utility model.

[0022] In the drawing,

[0023] 1, shaft rod one, 2, auxiliary assembly, 201, auxiliary block, 202, shaft rod two, 203, sealing cover one, 3, sealing assembly one, 301, sealing seat, 302, sealing telescopic cover, 303, sealing cover two, 4, movable assembly, 401, universal joint fork one, 402, cross shaft, 403, needle bearing, 404, universal joint fork two, 5, sealing assembly two, 501, sealing sleeve, 502, rubber protective cover, 503, sealing ring, 504, sealing screw, 6, fixing screw, 7, sealing plug. Specific implementation

[0024] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] Embodiment one

[0026] As Figures 1-5 shown, a waterproof and dustproof sealing type universal shaft according to an embodiment of the utility model comprises a shaft rod one 1, the two ends of the shaft rod one 1 are connected with an auxiliary assembly 2, the auxiliary assembly 2 comprises auxiliary blocks 201 fixedly connected at the two ends of the shaft rod one 1, the periphery of the auxiliary blocks 201 is connected with shaft rod twos 202, the surface of the shaft rod twos 202 is provided with filling holes for assisting lubricating oil, the inner wall of the filling hole is threadedly connected with a sealing plug 7, the inner wall of the shaft rod two 202 is threadedly connected with a sealing cover one 203, the middle position of the sealing cover one 203 is in contact with the surface of the shaft rod one 1;

[0027] The auxiliary assembly 2 is provided with a sealing assembly one 3 at one end, the sealing assembly one 3 comprises a sealing seat 301 fixed at one end of the auxiliary assembly 2, the opposite end of the shaft rod two 202 is fixedly connected with the sealing seat 301, the inner wall of the sealing seat 301 is provided with a sealing telescopic cover 302, the two ends of the sealing telescopic cover 302 are provided with sealing covers two 303, and the inner wall of the sealing covers two 303 is threadedly connected with the surface of the sealing seat 301.

[0028] Embodiment two:

[0029] As Figures 1-5 shown, according to the waterproof and dustproof sealing type universal shaft, the movable assembly 4 is installed at one end of the auxiliary assembly 2, the movable assembly 4 comprises a universal joint fork one 401 fixedly installed at one end of the shaft rod two 202, a plurality of mounting holes are formed in the universal joint fork one 401, the number of the mounting holes is two, the inner wall of the mounting hole is provided with a cross shaft 402, the four ends of the cross shaft 402 are provided with needle bearings 403, two of the needle bearings 403 are connected with the inner wall of the mounting hole, the other two needle bearings 403 are provided with a universal joint fork two 404, the universal joint fork two 404 is provided with a mounting hole two at the connection position with the needle bearings 403, a plurality of fixing holes are formed in one side of the universal joint fork two 404, the number of the fixing holes is four, the inner wall of the fixing hole is provided with a fixing screw 6, and the fixing screw 6 is used for fixing the universal shaft.

[0030] The movable assembly 4 is provided with a sealing assembly two 5, the sealing assembly two 5 comprises a sealing sleeve 501 arranged on the universal joint fork two 404 and the universal joint fork one 401, the sealing sleeve 501 is provided with a rubber protective cover 502, the two ends of the rubber protective cover 502 are provided with sealing rings 503, and the sealing rings 503 are threadedly connected with sealing screws 504.

[0031] In order to facilitate the understanding of the above technical scheme of the utility model, the working principle or operation mode of the utility model in the actual process is described in detail.

[0032] According to the above technical scheme of the utility model, the two ends of the shaft rod one 1 are fixedly connected with the shaft rod two 202 through the auxiliary blocks 201, a main transmission structure is formed, the sealing seat 301 is fixed at the end of the shaft rod two 202, the inner wall of the sealing seat 301 is provided with a telescopic sealing telescopic cover 302, the sealing telescopic cover 302 can freely expand and contract when the shaft rod moves, the sealing failure caused by displacement is avoided, meanwhile, the sealing cover two 303 is connected with the sealing seat 301 through threads, the two ends of the sealing telescopic cover 302 are pressed, the axial sealing is ensured, the sealing cover one 203 is fixedly connected with the inner wall of the shaft rod two 202 through threads and is in contact with the surface of the shaft rod one 1, the radial sealing is provided, and the invasion of pollutants from the shaft rod connection is prevented.

[0033] And the shaft pole two 202 end fixed universal joint fork one 401, through the cross shaft 402 and the needle bearing 403 with universal joint fork two 404 connection, realize multi-angle rotation, sealing sleeve 501 wrap cross shaft 402 and the needle bearing 403, rubber protective cover 502 through the sealing ring 503 and sealing screw 504 fixed on the universal joint fork, form dynamic sealing barrier, prevent the pollutants into the bearing area;

[0034] And the shaft pole two 202 surface is equipped with the filling hole, through the screwing sealing plug 7 can inject lubricating oil, guarantee the lubrication of needle bearing 403 etc. moving parts, the fixed hole of universal joint fork two 404 side through fixed screw 6 and external equipment connection, ensure the stability of the overall structure.

[0035] The above only for the preferred embodiment of the utility model has been, and does not use to limit the utility model, any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model, should be contained in the protection scope of the utility model.

Claims

1. A waterproof and dustproof sealed type universal shaft characterized by comprising: The utility model provides an improved sealing device for shaft, which comprises a shaft (1), two ends of the shaft (1) are connected with auxiliary assembly (2), the auxiliary assembly (2) is provided with sealing assembly one (3) relative to one end, the sealing assembly one (3) comprises the sealing seat (301) fixed in one end of auxiliary assembly (2), the inner wall of sealing seat (301) is installed with sealing telescopic cover (302), two ends of sealing telescopic cover (302) are installed with sealing cover two (303), the inner wall of sealing cover two (303) is connected with the surface of sealing seat (301) with screw thread, one end of auxiliary assembly (2) is installed with movable assembly (4), and movable assembly (4) is provided with sealing assembly two (5).

2. The waterproof and dustproof sealing type universal shaft according to claim 1, characterized in that, The auxiliary assembly (2) comprises auxiliary block (201) fixedly connected at both ends of the shaft (1), the outer periphery of the auxiliary block (201) is connected with the shaft (2), the inner wall of the shaft (2) is connected with the sealing cover one (203) with screw thread, the middle position of the sealing cover one (203) is in contact with the surface of the shaft (1), and the opposite end of the shaft (2) is fixedly connected with the sealing seat (301).

3. The waterproof and dustproof sealing type universal shaft according to claim 2, characterized in that, The movable assembly (4) comprises universal joint fork one (401) fixedly installed at one end of the shaft (2), a plurality of mounting holes are formed in the universal joint fork one (401), the inner wall of the mounting hole is provided with a cross shaft (402), the four ends of the cross shaft (402) are provided with needle roller bearings (403), two of the needle roller bearings (403) are connected with the inner wall of the mounting hole, and the surfaces of the other two needle roller bearings (403) are connected with universal joint fork two (404).

4. The waterproof and dustproof sealing type universal shaft according to claim 3, characterized in that, The sealing assembly two (5) comprises sealing sleeve (501) arranged on the universal joint fork two (404) and the universal joint fork one (401), the rubber protective cover (502) is installed on the sealing sleeve (501), the sealing ring (503) is installed at both ends of the rubber protective cover (502), and the sealing screw (504) is connected with the sealing ring (503) with screw thread.

5. The waterproof and dustproof sealing type universal shaft according to claim 4, characterized in that, A plurality of fixing holes are formed in one side of the universal joint fork two (404), and the fixing screw (6) is installed in the inner wall of the fixing hole.

6. The waterproof and dustproof sealing type universal shaft according to claim 5, characterized in that, The surface of the shaft (2) is provided with a filling hole, and the inner wall of the filling hole is connected with the sealing plug (7) with screw thread.

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