A visual bushing lubrication test device for engineering machinery

Abstract

The present invention relates to a visual bushing lubrication test device for engineering machinery, and belongs to the technical field of engineering machinery equipment. The device comprises a machine base assembly, a pressure applicator, a slide seat, a shaft seat, an articulated pin shaft, a transparent bushing and a pressure steel wheel device; a shaft seat for installing an articulated pin shaft is provided on the slide seat; a pressure applicator for pushing the slide seat to move is provided on one side of the slide seat, and a pressure steel wheel device is provided on the other side of the slide seat; a transparent bushing is provided on the outer circumference of the articulated pin shaft; a pressure steel wheel device is provided on the outer circumference of the transparent bushing. A bushing made of high-strength transparent material is used to visually observe the continuity and durability of the lubricating oil film generated by the grease outlet of the articulated pin shaft and the lubricating oil groove of the transparent bushing. By changing the pressure between the transparent bushing and the pressure steel wheel, the purpose of simulating the stress conditions of the actual working conditions is achieved. The lubrication mechanism of the grease of the articulated pin shaft of engineering machinery is studied, and the lubricating oil channels and lubricating oil grooves of the articulated pin shaft and bushing that match the engineering machinery are developed, so that the hinge points of the engineering machinery can work long-term and efficiently.

Description

Technical Field

[0001] The invention relates to a visual shaft sleeve lubrication test device for engineering machinery, belonging to the technical field of engineering machinery equipment. Background Art

[0002] There are many varieties of engineering machinery products and complex working conditions. The pin-jointed rotating structure on the frame and working device is widely used. Various functions of the machine are realized by the combination of various rotating structures. The rotating hinge is a lubricating rotating structure that uses a sleeve and a pin. Due to the high intensity of the working conditions, a good lubricating oil film must be maintained between the sleeve and the pin to meet the requirements of uninterrupted and continuous operation of the machine. Otherwise, poor lubrication will cause mechanical grinding to stagnate and stop the machine due to failure; it will cause safety accidents and personal and property losses. Therefore, it is necessary to study the relationship between the lubricating oil channel and the structural form of the oil groove between the pin and the sleeve and the formation of an ideal lubricating oil film. This technical field requires a device that can perform a visual lubrication test on the articulated pin of engineering machinery, which can intuitively observe the distribution lubrication effect of the lubricating oil film under pressure and the fatigue failure state of the lubricating grease, thereby optimizing the oil groove structure design of the pin and sleeve, and realizing long-term operation of the machine without wear and stagnation of the articulated pin and sleeve, greatly improving the service life of the machine, reducing maintenance costs and safety hazards. Summary of the invention

[0003] The purpose of the present invention is to visualize the perspective effect of the sleeve lubrication test, intuitively observe the state of the lubricating oil film presented by the oil channels and oil grooves of different structures, as well as the distributed lubrication effect and the fatigue state of the grease under pressure, so as to optimize the oil groove structure design of the pins and sleeves of the engineering machinery, realize the long-term operation of the machinery without wear and jamming of the articulated pins and sleeves, greatly improve the service life of the machine, reduce the cost of repair and maintenance and solve the technical problems of safety hazards.

[0004] In order to achieve the purpose of solving the above-mentioned problems, the technical solution adopted by the present invention is to provide a visual bushing lubrication test device for engineering machinery, including a machine base assembly, a pressure applicator, a slide, an axle seat, an articulated pin, a transparent bushing and a pressure steel wheel device; a slide that can move horizontally and linearly is provided on the horizontal surface of the machine base assembly, and an axle seat for installing the articulated pin is provided on the slide; an articulated pin is provided on the axle seat, and the central axis of the articulated pin is perpendicular to the linear movement direction of the slide; a pressure applicator for pushing the slide to move is provided on one side of the slide along the linear movement direction of the slide, and a pressure steel wheel device for preventing the slide from moving is provided on the other side of the slide; a transparent bushing that rotates around the outer circumference of the articulated pin is provided on the outer periphery of the articulated pin; a pressure steel wheel device that drives the transparent bushing to rotate by the friction force through the tangent point is provided corresponding to the outer circumference of the transparent bushing.

[0005] Preferably, a linear slide rail for sliding the slide is provided between the slide and the horizontal surface of the machine base assembly.

[0006] Preferably, the pressure applicator includes a push rod and a base provided with a threaded hole for passing the push rod, and the central axis of the push rod is parallel to the linear movement direction of the slide; one end of the push rod is provided with a spherical end, and the other end is provided with a screw for rotating the push rod to adjust the distance between the push rod and the slide; the slide is provided with a pressure-bearing beam corresponding to the spherical end of the push rod.

[0007] Preferably, a transparent sleeve is provided on the outer circumference of the hinge pin shaft, and an annular sealing member is provided between the inner wall of the two side ends of the transparent sleeve and the circumferential outer wall of the hinge pin shaft.

[0008] Preferably, one end portion of the cylindrical hinge pin is provided with a grease filling port for filling grease, and the other end portion is provided with a pressure measuring port for connecting a pressure gauge; both ends of the cylindrical hinge pin are fixedly connected to the sliding seat.

[0009] Preferably, a three-way lubricating oil channel is provided in the hinge pin shaft, one end of the lubricating oil channel is connected to the grease injection port; the other end is connected to the pressure measuring port, and a grease outlet is provided between the two ends; the grease outlet is communicated with an internal oil groove provided on the inner wall of the transparent sleeve.

[0010] Preferably, a clearance fit is provided between the circumferential inner wall of the transparent sleeve and the circumferential outer wall of the hinge pin shaft.

[0011] Preferably, the pressure steel wheel device comprises a pressure steel wheel, a steel wheel shaft, a reducer and a variable frequency motor; the variable frequency motor is connected to the steel wheel shaft via the reducer, and the pressure steel wheel is sleeved on the steel wheel shaft.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The present invention can visually observe the continuity and durability of the lubricating oil film produced by different grease outlet modes of the articulated pin and different lubricating oil grooves of the transparent sleeve. By changing the pressure between the transparent sleeve and the pressure steel wheel, that is, changing the force between the transparent sleeve and the support surface of the articulated pin, the purpose of simulating the actual working condition is achieved. The grease filling pressure can be measured through the pressure measuring port. By changing the type of grease, changing the speed and direction of the pressure steel wheel, the distribution of the lubricating grease film, color change, oil separation time, wire drawing, scratching and fatigue phenomena can be observed and analyzed.

[0014] 2. The present invention adopts a high-strength transparent material sleeve, and optimizes the structural shape of the oil groove and the pin grease outlet through intuitive observation and analysis methods. The actual working conditions are simulated to lubricate the transparent sleeve and the hinge pin, and force, forward and reverse speed rotation, etc. are applied to verify the fatigue strength of the grease and the durability of the lubricating oil film, so as to design the optimal steel pin grease outlet shape and the lubricating oil groove structure of the steel sleeve, so as to optimize the distribution of the lubricating oil film at the hinged part, extend the grease filling cycle, and ensure continuous and efficient operation of the construction machinery. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of a visualized shaft assembly of an engineering machinery according to the present invention;

[0016] Figure 2 This is a front view of a visual shaft sleeve lubrication test device for engineering machinery according to the present invention;

[0017] Figure 3 A top view of a visual shaft sleeve lubrication test device for engineering machinery according to the present invention;

[0018] Reference numerals: 1. base assembly; 2. pressure applicator; 3. slide seat; 4. shaft seat; 5. hinge pin; 6. pressure steel wheel; 7. transparent shaft sleeve; 8. steel wheel shaft; 9. reducer; 10. frequency conversion motor; 11. seal; 12 grease injection port; 13. pressure measuring port; DETAILED DESCRIPTION

[0019] In order to make the present invention more clearly understood, a preferred embodiment is described in detail with reference to the accompanying drawings as follows:

[0020] like Figure 1-3As shown, the present invention provides a visual bushing lubrication test device for engineering machinery, comprising a machine base assembly 1, a pressure applicator 2, a slide 3, an axle seat 4, a hinge pin 5, a transparent bushing 7 and a pressure steel wheel device; a slide 3 capable of horizontal linear movement is provided on the horizontal surface of the machine base assembly 1, and an axle seat 4 for mounting the hinge pin 5 is provided on the slide 3; an hinge pin 5 is provided on the axle seat 4, and the central axis of the hinge pin 5 is perpendicular to the linear movement direction of the slide 3; a pressure applicator 2 for pushing the slide 3 to move is provided on one side of the slide 3 along the linear movement direction of the slide 3, and a pressure steel wheel device is provided on the other side of the slide 3; a transparent bushing 7 rotating around the outer circumference of the hinge pin 5 is sleeved on the outer circumference of the hinge pin 5; a pressure steel wheel device is provided on the outer circumference of the transparent bushing 7 corresponding to an externally tangent friction force through the tangent point to drive the transparent bushing to rotate. A linear slide rail for sliding the slide 3 is provided between the slide 3 and the horizontal surface of the machine base assembly 1. The pressure applicator 2 includes a cylindrical push rod and a base with a threaded hole for the push rod, the central axis of the push rod is parallel to the linear movement direction of the slide seat; a spherical end is provided at one end of the cylindrical push rod, and a screw for adjusting the movement of the slide seat is provided at the other end; a pressure beam corresponding to the spherical end of the push rod is provided on the slide seat 3. A hinge pin 5 is sleeved inside the transparent sleeve 7, and an annular seal 11 is provided between the inner circumferential wall of the transparent sleeve 7 and the outer circumferential wall of the hinge pin 5. A grease injection port 12 for filling grease is provided at one end of the cylindrical hinge pin 5, and a pressure measuring port 13 for connecting a pressure gauge is provided at the other end; both ends of the cylindrical hinge pin 5 are fixedly connected to the slide seat 3; a three-way lubricating oil channel is provided inside the hinge pin 5, one end of the lubricating oil channel is connected to the grease injection port 12; the other end is connected to the pressure measuring port 13, and a grease outlet is provided between the two ends; the grease outlet is communicated with the internal oil groove provided on the inner wall of the transparent sleeve 7. The inner circumference wall of the transparent sleeve 7 and the outer circumference wall of the hinge pin 5 are set to be clearance-fitted. The pressure steel wheel device includes a pressure steel wheel 6, a steel wheel shaft 8, a reducer 9 and a variable frequency motor 10; the variable frequency motor 10 is connected to the steel wheel shaft 8 through the reducer 9, and the steel wheel shaft 8 is sleeved with the pressure steel wheel 6.

[0021] The present invention adopts a high-strength transparent material sleeve 7, and optimizes the oil groove and the pin grease outlet structure shape through intuitive observation and analysis methods. The actual working conditions are simulated to inject grease, apply force, and rotate forward and reverse speed between the transparent sleeve 7 and the hinge pin 5 to verify the fatigue strength of the grease and the durability of the lubricating oil film. On this basis, the optimal steel pin grease outlet shape and the lubricating oil groove structure of the steel sleeve are designed, so as to optimize the distribution of the lubricating oil film at the hinged part, extend the grease filling cycle, and ensure continuous and efficient operation of the construction machinery.

[0022] The visual shaft sleeve lubrication test device for engineering machinery includes a machine base assembly 1, a slide seat 3 is installed on the machine base assembly 1, a hinge pin shaft 5 is assembled on the shaft seat 4, a transparent shaft sleeve 7 is assembled on the hinge pin shaft 5, and the shaft seat 4 is installed on the slide seat 3; seals 11 are installed at both ends of the transparent shaft sleeve 7 to ensure that the grease will not be squeezed out from the fitting gap. Before starting the device, grease is added through the grease injection port 12 at one end of the hinge pin shaft 5, and the pressure measuring port 13 at the other end is connected to the pressure gauge to observe whether the fitting gap is filled with grease and the pressure display of the instrument; the slide seat 3 is pushed to move by the pressure applicator 2 to press the transparent shaft sleeve 7 and the pressure steel wheel 6. The variable frequency motor 10 is started to drive the reducer 9 and the steel wheel shaft 8 to drive the pressure steel wheel 6 to rotate under the action of torque, and the transparent shaft sleeve 7 is synchronously rotated under the friction of the pressure steel wheel 6; the pressure of the pressure applicator 2, the rotation direction and the speed of the pressure steel wheel 6 can be adjusted; a linear slide rail is arranged on the machine base assembly 1, and the slide seat 3 can move in a directional manner on the slide rail. There is a fixing plate at the end of the articulated pin 5, which is fixed on the shaft seat 4 after assembly. A three-way lubricating oil channel is designed inside the articulated pin 5, with a grease outlet in the middle, a grease injection port 12 at one end, and a pressure measuring port 13 at the other end. The grease outlet is connected to the internal oil groove of the transparent sleeve 7. The transparent sleeve 7 and the articulated pin 5 are clearance-fitted, and the transparent sleeve 7 can rotate relative to the articulated pin 5. The pressure of the pressure applicator 2, the speed and direction of the pressure steel wheel 6 can be adjusted arbitrarily. The transparent sleeve 7 is made of high-strength and high-transparency material, and the fitting clearance between the transparent sleeve 7 and the articulated pin 5 simulates the actual design of the product. A lubricating oil groove is designed on the inner side of the transparent sleeve 7, and seals 11 are installed at both ends.

[0023] Example

[0024] like Figure 1 , 2 3 are related diagrams of a visual shaft sleeve lubrication test device for engineering machinery provided by the present invention, which includes a base assembly 1, a pressure applicator 2 is provided on the base assembly 1, the base assembly 1 and the slide 3 are assembled through a linear slide rail, and the slide 3 can slide on the slide rail. The shaft seat 4 is assembled on the slide 3 and moves synchronously with the slide 3 as a whole. Seals 11 are installed at both ends of the transparent shaft sleeve 7. Figure 1 The transparent sleeve 7 is assembled with the hinge pin 5 and the shaft seat 4. The end side plate of the hinge pin 7 is fixed on the shaft seat 4. The transparent sleeve 7 can rotate on the hinge pin 5. A steel wheel frame is provided on the machine base assembly 1. The pressure steel wheel 6 is assembled on the steel wheel frame. The variable frequency motor 10 drives the reducer 9 to drive the steel wheel shaft 8 to rotate the pressure steel wheel 6. The steering and direction of the pressure steel wheel 6 can be adjusted.

[0025] The test device assembly process is as follows:

[0026] Step 1: The pressure applicator 2, the slide seat 3, the shaft seat 4, the steel wheel shaft 8, and the pressure steel wheel 6 are assembled to the machine base assembly 1 in sequence. After assembly, the pressure steel wheel 6 can rotate under the drive of the frequency conversion motor 10, the reducer 9 and the steel wheel shaft 8.

[0027] Step 2: Press Figure 1 As shown, the hinge pin 5, the transparent sleeve 7 and the shaft seat 4 are assembled. Note that seals 11 are pre-installed on both ends of the transparent sleeve. The transparent sleeve 7 and the hinge pin 5 are clearance-fitted. The transparent sleeve 7 can rotate on the hinge pin 5 after assembly.

[0028] Step 3: Thread the fixing plate of the hinge pin 5 and the shaft seat 4 to fix them.

[0029] Step 4: Connect and assemble the variable frequency motor 10, the reducer 9 and the steel wheel shaft 8.

[0030] Step 5: Circuit connection and operation debugging.

[0031] Step 6: Connect the lubrication and pressure test accessories, add lubricating grease through the grease inlet 12 on the hinge pin 5, and observe whether the transparent sleeve lubricating oil groove, the matching clearance and the filling pressure are filled.

[0032] The present invention adopts a high-strength transparent material sleeve, which can visually observe the continuity and durability of the lubricating oil film produced by the different grease outlet modes of the hinge pin and the different lubricating oil grooves of the transparent sleeve. By changing the pressure between the transparent sleeve and the pressure steel wheel, that is, changing the force between the transparent sleeve and the support surface of the hinge pin, the purpose of simulating the actual working condition is achieved. The grease filling pressure can be measured through the pressure measuring port. By changing the type of grease, changing the speed and direction of the pressure steel wheel, the distribution of the lubricating grease film, color change, oil separation time, wire drawing, scratching and fatigue phenomena can be observed and analyzed.

[0033] The present invention optimizes the structural shape of the oil groove and the pin grease outlet through intuitive observation and analysis methods, simulates actual working conditions to inject grease between the transparent sleeve and the articulated pin, apply force, and rotate in forward and reverse directions, etc., to verify the fatigue strength of the grease and the durability of the lubricating oil film. The present invention simulates actual working conditions, studies the lubrication mechanism of the articulated pin grease of engineering machinery through intuitive representational characteristics, and develops lubricating oil channels and lubricating oil grooves of the articulated pin and sleeve that match the engineering machinery, thereby optimizing the structural design of the oil groove of the articulated pin and sleeve, so that the articulated points of the engineering machinery can work long-term and efficiently, keep the lubricating oil film continuous, durable and fatigue-resistant, and extend the filling cycle of the lubricating grease. When the machinery is operating for a long time, the articulated pin and sleeve will not wear or get stuck, and the grease will not deteriorate, which greatly increases the service life of the machine, reduces the cost of repair and maintenance, and reduces safety hazards.

[0034] The above is only a preferred embodiment of the present invention, and is not any formal or substantial limitation of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and supplements without departing from the present invention, and these improvements and supplements should also be regarded as the protection scope of the present invention. Any technician familiar with this profession, without departing from the spirit and scope of the present invention, can make some changes, modifications and equivalent changes made by using the technical content disclosed above, which are equivalent embodiments of the present invention; at the same time, any changes, modifications and evolutions of any equivalent changes made to the above embodiments based on the essential technology of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A visual bushing lubrication test device for engineering machinery, characterized in that: The invention comprises a machine base assembly, a pressure applicator, a slide seat, an axle seat, an articulated pin, a transparent bushing and a pressure steel wheel device; a slide seat which can move horizontally and linearly is provided on the horizontal surface of the machine base assembly, and an axle seat for installing an articulated pin is provided on the slide seat; an articulated pin is provided on the axle seat, and the central axis of the articulated pin is perpendicular to the linear movement direction of the slide seat; a pressure applicator for pushing the slide seat to move is provided on one side of the slide seat along the linear movement direction of the slide seat, and a pressure steel wheel device is provided on the other side of the slide seat; a transparent bushing which rotates around the outer circumference of the articulated pin is provided on the outer circumference of the transparent bushing; a pressure steel wheel device which drives the transparent bushing to rotate by the friction force passing through the tangent point is provided on the outer circumference of the transparent bushing; the pressure applicator comprises a push rod and a base provided with a threaded hole for penetrating the push rod, and the central axis of the push rod is parallel to the linear movement direction of the slide seat; the push rod is ... A spherical end is provided at one end, and a screw is provided at the other end for rotating the push rod to adjust the distance between the push rod and the sliding seat; a pressure-bearing beam corresponding to the spherical end of the push rod is provided on the sliding seat; a transparent sleeve is provided on the outer circumference of the hinge pin, and an annular seal is provided between the inner wall of the two side ends of the transparent sleeve and the circumferential outer wall of the hinge pin; a grease injection port for filling grease is provided at one end of the hinge pin, and a pressure measuring port for connecting a pressure gauge is provided at the other end; both ends of the hinge pin are fixedly connected to the sliding seat; a three-way lubricating oil channel is provided in the hinge pin, one end of the lubricating oil channel is connected to the grease injection port; the other end is connected to the pressure measuring port, and a grease outlet is provided between the two ends; the grease outlet is communicated with an internal oil groove provided on the inner wall of the transparent sleeve; a clearance fit is provided between the circumferential inner wall of the transparent sleeve and the circumferential outer wall of the hinge pin.

2. A visual shaft sleeve lubrication test device for engineering machinery as claimed in claim 1, characterized in that: A linear slide rail for sliding the slide is arranged between the slide and the horizontal surface of the machine base assembly.

3. The visual bushing lubrication test device for engineering machinery according to claim 1, characterized in that: The pressure steel wheel device comprises a pressure steel wheel, a steel wheel shaft, a reducer and a variable frequency motor; the variable frequency motor is connected to the steel wheel shaft through the reducer, and the pressure steel wheel is sleeved on the steel wheel shaft.

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