Lubricating grease friction testing device

Abstract

The utility model relates to the technical field of lubricating grease testing, and discloses a lubricating grease friction testing device which comprises a base, an outer cover and a rotating column, supporting legs are vertically fixed on the outer ring of the bottom of the base, the outer cover is fixed on the outer ring of the surface of the base, and the rotating column is vertically and rotatably installed in the middle of the surface of the base. The rotating column is in transmission connection with a stepping motor installed at the bottom of the base, a rotating cylinder is fixed to the outer ring of the rotating column through a plurality of connecting rods, an inner cylinder is detachably locked to the outer ring of the rotating cylinder, an outer cylinder is detachably locked to the inner ring of the outer cover, and the outer cylinder is arranged on the outer ring of the inner cylinder in a sleeving mode. According to the technical scheme, the rotatable drum is arranged on the inner side of the outer cover, the inner drum and the outer drum which are locked on the outer ring of the drum and the inner ring of the outer cover can be replaced, and the inner drum or the outer drum with different sizes, materials and surface roughness can be selected; therefore, testing can be carried out according to use conditions of different fit clearances, materials, roughness and the like, and the relative movement speed is higher, so that a better testing effect is obtained.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of lubricating grease test, specifically to a kind of lubricating grease friction test device. BACKGROUND

[0002] Lubricating grease is a kind of thick grease-like semi-solid lubricant, mainly by mineral oil (or synthetic lubricating oil) and thickening agent modulation, it is used in the friction part of machinery, plays lubricating and sealing effect, can also fill the gap of metal surface and prevent rust, lubricating grease has high viscosity, heat resistance, antioxidant property, anticorrosion and stability etc., can protect mechanical parts under different working conditions, prolong the service life of equipment, in order to obtain the use performance of lubricating grease, it needs to be tested by friction.

[0003] The utility model discloses a lubricating grease tribology test device, by setting sleeve and sleeve pipe, sleeve is used for smearing lubricating grease, sleeve pipe is driven along the axial reciprocating motion of sleeve pipe under the sleeve of moving platform, the friction coefficient of different lubricating grease is tested by the multiple friction of sleeve inner wall and sleeve outer wall.

[0004] However, in actual use, there will be different materials, different roughness, different fit clearance and other situations between the transmission structure of the effect of lubricating grease, the material, roughness and fit clearance of the sleeve and sleeve pipe of the above-mentioned test device are in fixed state and cannot be replaced, cannot be tested in multiple use conditions, and the relative motion speed is not easy to improve, so that better test effect cannot be obtained. Therefore, we propose a kind of lubricating grease friction test device. UTILITY MODEL CONTENTS

[0005] The utility model discloses a kind of lubricating grease friction test device, by setting rotatable drum is placed in the inside of outer cover, the inner cylinder and outer cylinder that are placed in the outer circle of drum and the inner circle of outer cover locking can be replaced, different inner cylinder or outer cylinder of size, material and surface roughness can be selected, so that different fit clearance, material and roughness etc. Use condition can be tested, and relative motion speed is faster, so that better test effect is obtained, the problem proposed in background art is solved.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of lubricating grease friction test device, including base, outer cover and rotating column, the bottom outer circle of base is vertically fixed with supporting leg, the outer circle of outer cover is fixed on the surface of base, rotating column is vertically rotatable and is installed in the middle position of the surface of base, and rotating column is drivingly connected with the step motor installed at the bottom of base;The outer circle of rotating column is fixed with drum by multiple connecting rods, the outer circle of drum is detachably locked with inner cylinder, the inner circle of outer cover is detachably locked with outer cylinder, and outer cylinder is sleeved in the outer circle of inner cylinder.

[0007] By adopting the technical scheme, the inner cylinder and the outer cylinder are replaced respectively, the inner cylinder or the outer cylinder with required size, material and roughness is selected to obtain different matching clearances, material and roughness of the contact surface, then the lubricating grease can be applied, and the performance of the lubricating grease can be detected according to different conditions.

[0008] Optionally, the detachable structure between the rotating drum and the inner cylinder is an inner insertion groove uniformly vertically arranged on the surface of the outer cylinder and an inner insertion strip uniformly vertically fixed on the inner ring of the inner cylinder, the inner insertion strip is inserted into the inner insertion groove to realize the detachable locking of the inner cylinder on the outer ring of the rotating drum.

[0009] Optionally, a plurality of inner insertion grooves and inner insertion strips are arranged, the upper part of the inner insertion groove is communicated with the outside, and the bottom of the inner insertion groove is blocked.

[0010] By adopting the technical scheme, the inner cylinder is stably locked, and when the inner insertion strip is inserted into the bottom of the inner insertion groove, the downward sliding of the inner insertion strip can be limited.

[0011] Optionally, the detachable structure between the outer cover and the outer cylinder is an outer insertion groove uniformly vertically arranged on the inner surface of the outer cover and an outer insertion strip uniformly vertically fixed on the outer ring of the outer cylinder, the outer insertion strip is inserted into the outer insertion groove to realize the detachable locking of the outer cylinder on the inner ring of the outer cover.

[0012] Optionally, a plurality of outer insertion grooves and outer insertion strips are arranged, the upper part of the outer insertion groove is communicated with the outside, and the bottom of the outer insertion groove is blocked.

[0013] By adopting the technical scheme, the outer cylinder is stably locked, and when the outer insertion strip is inserted into the bottom of the outer insertion groove, the downward sliding of the outer insertion strip can be limited.

[0014] Optionally, a pull ball is fixed on the upper surface of the inner cylinder and the outer cylinder, and the diameter of the pull ball is smaller than the thickness of the inner cylinder and the outer cylinder.

[0015] By adopting the technical scheme, when the inner cylinder or the outer cylinder needs to be replaced, the inner cylinder or the outer cylinder can be pulled out upward by the pull ball.

[0016] Compared with the prior art, the beneficial effects of the technical scheme of the application are as follows:

[0017] 1. The technical scheme of the application is arranged by setting the rotatable rotating drum inside the outer cover, the inner cylinder and the outer cylinder locked on the outer ring of the rotating drum and the inner ring of the outer cover can be replaced, the inner cylinder or the outer cylinder with different sizes, materials and surface roughnesses can be selected, so that the test can be performed according to different matching clearances, materials and roughnesses, and the relative movement speed is faster, so that better test effect can be obtained.

[0018] 2. The technical scheme of the application is characterized in that the pull balls are fixed above the surfaces of the inner cylinder and the outer cylinder, and when the inner cylinder or the outer cylinder is replaced, the inner cylinder or the outer cylinder can be pulled out and replaced conveniently through the pull balls. BRIEF DESCRIPTION OF DRAWINGS

[0019] Other features, objects and advantages of the application will become more apparent from the following detailed description of non-limiting embodiments, read in conjunction with the accompanying drawings:

[0020] Fig. 1 Figure 1 is a schematic diagram of the overall structure of the lubricating grease friction testing device of the application;

[0021] Fig. 2 Figure 2 is a schematic diagram of the top view structure of the lubricating grease friction testing device of the application;

[0022] Fig. 3 Figure 3 is a schematic diagram of the bottom structure of the base of the lubricating grease friction testing device of the application.

[0023] In the figure: 1, base; 11, foot; 12, stepping motor; 2, outer cover; 21, outer slot; 3, rotating column; 31, connecting rod; 4, rotating drum; 41, inner slot; 5, inner cylinder; 51, inner insertion strip; 6, outer cylinder; 61, outer insertion strip; 7, pull ball. DETAILED DESCRIPTION

[0024] Referring to Figs. 1-3 The application provides a technical scheme: a lubricating grease friction testing device, which comprises a base 1, an outer cover 2 and a rotating column 3, the outer circle of the bottom of the base 1 is vertically fixed with a foot 11, the foot 11 is provided with three and has the same height, and can realize stable support of the base 1.

[0025] The rotating column 3 is vertically rotatable and installed at the middle position of the surface of the base 1, and the rotating column 3 is in transmission connection with a stepping motor 12 installed at the bottom of the base 1, the stepping motor 12 can drive the rotating column 3 to rotate, the outer circle of the rotating column 3 is fixed with a rotating drum 4 through a plurality of connecting rods 31, and the rotating column 3 is ensured to be located at the inner center position of the rotating drum 4, the rotating column 3 can drive the rotating drum 4 to rotate, and the outer cover 2 is fixed at the outer circle of the surface of the base 1.

[0026] The outer ring of the rotating drum 4 is detachably locked with the inner drum 5, and the detachable structure between the rotating drum 4 and the inner drum 5 is the uniform vertical inner insertion groove 41 formed on the surface of the outer drum 6 and the uniform vertical inner insertion strip 51 fixed on the inner ring of the inner drum 5, the inner insertion strip 51 is inserted into the inner insertion groove 41 to achieve the purpose of detachable locking of the inner drum 5 on the outer ring of the rotating drum 4, and the inner ring of the outer cover 2 is detachably locked with the outer drum 6, and the detachable structure between the outer cover 2 and the outer drum 6 is the uniform vertical outer insertion groove 21 formed on the inner surface of the outer cover 2 and the uniform vertical outer insertion strip 61 fixed on the outer ring of the outer drum 6, the outer insertion strip 61 is inserted into the outer insertion groove 21 to achieve the purpose of detachable locking of the outer drum 6 on the inner ring of the outer cover 2, so that the outer drum 6 is sleeved on the outer ring of the inner drum 5.

[0027] Since the inner drum 5 and the outer drum 6 can be disassembled and replaced, different materials and surface roughness can be selected, and when different sizes of the inner drum 5 or the outer drum 6 are selected, the cooperation gap between the two can also be changed to adapt to different detection requirements. The lubricating grease is coated between the outer surface of the inner drum 5 and the inner surface of the outer drum 6, and the step motor 12 is started to drive the rotating drum 4 and the inner drum 5 to rotate. The lubricating grease is placed between the relatively rotating inner drum 5 and the outer drum 6, and the friction test of the lubricating grease can be carried out.

[0028] The inner insertion groove 41 and the inner insertion strip 51 are provided with a plurality of, the outer insertion groove 21 and the outer insertion strip 61 are provided with a plurality of, through the above setting can realize the stable locking of the inner drum 5 and the outer drum 6, the top of the inner insertion groove 41 is through to the outside, and the bottom of the inner insertion groove 41 is blocked, the top of the outer insertion groove 21 is through to the outside, and the bottom of the outer insertion groove 21 is blocked, so that when the inner insertion strip 51 or the outer insertion strip 61 is inserted into the bottom of the inner insertion groove 41 or the outer insertion groove 21, it can be limited to slide down.

[0029] In addition, the upper surface of the inner drum 5 and the outer drum 6 is fixed with the pull ball 7, when the inner drum 5 or the outer drum 6 is taken out, the inner drum 5 or the inner drum 5 can be pulled through the pull ball 7, and in order to avoid the pull ball 7 from hitting together when the inner drum 5 rotates, the diameter of the pull ball 7 is less than the thickness of the inner drum 5 and the outer drum 6.

[0030] In use, according to different situations of test items or scenes as required, the inner cylinder 5 or the outer cylinder 6 is replaced, the inner cylinder 5 and the outer cylinder 6 are pulled out by using the pull ball 7, then the inner cylinder 5 and the outer cylinder 6 of different sizes, materials or surface roughness are replaced, the inner insertion strip 51 is inserted into the inner insertion groove 41 to fix the inner cylinder 5 on the outer ring of the rotating cylinder 4, the outer insertion strip 61 is inserted into the outer insertion groove 21 to fix the outer cylinder 6 on the inner ring of the outer cover 2, and when the inner cylinder 5 and the outer cylinder 6 are replaced, the materials, surface roughness and corresponding required matching gap required for testing and the like are coated between the outer surface of the inner cylinder 5 and the inner surface of the outer cylinder 6, then the rotating cylinder 4 is driven to rotate by the stepping motor 12, the inner cylinder 5 is driven to rotate, the lubricating grease is placed between the relatively rotating inner cylinder 5 and the outer cylinder 6, the friction test of the lubricating grease can be carried out, after the inner cylinder 5 or the outer cylinder 6 is pulled out by the pull ball 7, the friction state of the opposite surfaces of the inner cylinder 5 and the outer cylinder 6 and the state of the lubricating grease can be observed, and the performance of the lubricating grease is judged.

Claims

1. A lubricating grease friction testing device, comprising a base (1), an outer cover (2) and a rotating column (3), the outer bottom of the base (1) is vertically fixed with a supporting leg (11), characterized in that: The outer cover (2) is fixed on the outer circle of the surface of the base (1), the rotating column (3) is vertically rotatable and installed in the middle position of the surface of the base (1), and the rotating column (3) is in transmission connection with the stepping motor (12) installed on the bottom of the base (1). The outer circle of the rotating column (3) is fixed with the rotating drum (4) through a plurality of connecting rods (31), the outer circle of the rotating drum (4) is detachably locked with the inner drum (5), the inner circle of the outer cover (2) is detachably locked with the outer drum (6), and the outer drum (6) is sleeved on the outer circle of the inner drum (5).

2. The grease friction testing device of claim 1, wherein: The detachable structure between the rotating drum (4) and the inner drum (5) is the inner insertion groove (41) uniformly vertically arranged on the surface of the outer drum (6) and the inner insertion strip (51) uniformly vertically fixed on the inner circle of the inner drum (5), the inner insertion strip (51) is inserted into the inner insertion groove (41), and the inner drum (5) is detachably locked on the outer circle of the rotating drum (4).

3. The grease friction testing device of claim 2, wherein: The inner insertion groove (41) and the inner insertion strip (51) are provided with a plurality of upper portions which are penetrated by the outside and bottom portions which are blocked.

4. The grease friction testing device of claim 1, wherein: The detachable structure between the outer cover (2) and the outer drum (6) is the outer insertion groove (21) uniformly vertically arranged on the inner surface of the outer cover (2) and the outer insertion strip (61) uniformly vertically fixed on the outer circle of the outer drum (6), the outer insertion strip (61) is inserted into the outer insertion groove (21), and the outer drum (6) is detachably locked on the inner circle of the outer cover (2).

5. The grease friction testing device of claim 4, wherein: The outer insertion groove (21) and the outer insertion strip (61) are provided with a plurality of upper portions which are penetrated by the outside and bottom portions which are blocked.

6. The grease friction testing device of claim 1, wherein: The upper surfaces of the inner drum (5) and the outer drum (6) are fixed with the pull ball (7), and the diameter of the pull ball (7) is smaller than the thickness of the inner drum (5) and the outer drum (6).

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