CN113390788A - Device and method for detecting frictional adhesion performance of friction-increasing grease of mine friction type hoist - Google Patents
Device and method for detecting frictional adhesion performance of friction-increasing grease of mine friction type hoist Download PDFInfo
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- CN113390788A CN113390788A CN202110817989.5A CN202110817989A CN113390788A CN 113390788 A CN113390788 A CN 113390788A CN 202110817989 A CN202110817989 A CN 202110817989A CN 113390788 A CN113390788 A CN 113390788A
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- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The invention discloses a device and a method for detecting the frictional adhesion performance of friction-increasing grease of a mine friction type hoist, wherein the device comprises a supporting system, a driving system, a transmission system and a detection system; the supporting system comprises a main supporting platform, a vertical sliding table, a sliding rail and a suspension platform, wherein the vertical sliding table and the sliding rail are fixed on the main supporting platform in parallel, the suspension platform is horizontally fixed on the back side of the upper part of the vertical sliding table, and a suspension cylinder is arranged on the suspension platform; the detection system comprises a three-dimensional force sensor, a loading plate, a friction device and a grease collection box, wherein the loading plate is horizontally fixed on one side of the vertical sliding table, the three-dimensional force sensor is fixed on the lower surface of the loading plate, the friction device is fixed on the lower surface of the three-dimensional force sensor, and the grease collection box is placed right below the suspension cylinder; the transmission system comprises a slide block, and the slide block is positioned on the slide rail and slides along the slide rail; and a steel wire sample to be detected is fixed on the sliding block. The friction type elevator liner friction detection device simulates friction between a friction type elevator liner and a steel wire rope, and detects the friction coefficient, the adhesion and the adsorption of friction increasing grease.
Description
Technical Field
The invention belongs to the technical field of elevator devices, and particularly relates to a device and a method for detecting the frictional adhesion performance of friction-increasing grease of a mine friction elevator.
Background
The friction type elevator is a junction connected with the ground in a well, transmission work is carried out mainly by means of friction force between a steel wire rope and a main guide wheel liner, and the friction force between the friction liner and the steel wire rope is a key factor for the reliability of the friction type elevator in work. However, the mine environment is harsh, the steel wire rope is easy to corrode, grease must be applied for corrosion prevention, and the friction coefficient between the steel wire rope and the friction lining is reduced due to the application of the grease. The reduction of the friction coefficient not only can reduce the lifting capacity, but also when the friction coefficient does not meet the design requirement, the lifting machine is easy to slip, high-speed overwinding is caused, the lifting steel wire rope is broken, a lifting container falls into the shaft bottom and other serious accidents occur, and immeasurable loss is caused to the life safety of national property and workers. Therefore, the friction type hoister has high performance requirements on friction increasing grease, not only has the function of corrosion prevention on the steel wire rope, but also has a certain friction increasing function, and ensures that the working friction coefficient of the hoister is not lower than the design requirements.
The existing evaluation standard of the steel wire rope lubricating grease is the standard SH/T0387-2014 lubricating grease for steel wire ropes in the petrochemical industry. The standard mainly specifies the physical properties (dropping point, kinematic viscosity, sliding test and low-temperature property) and the corrosion resistance (corrosion and heat test and salt spray test) of the steel wire rope lubricating grease. However, the physical performance indexes cannot meet the working conditions of some special purposes, particularly friction-increasing grease for mine hoisting, and do not make requirements on the friction coefficient, the adhesion and the adsorbability of the steel wire rope grease. In the existing grease detection devices, CN201720601195.4 discloses a grease adhesiveness detection device, which designs a grease adhesiveness experimental method, and takes the time for a moving steel plate to completely drop as a criterion for judging adhesiveness, but no provisions are made for the thickness of applied grease, and the grease adhesiveness detection device is only suitable for the grease adhesiveness detection between steel and steel; CN201720606125.8 discloses a grease consistency and viscosity monitoring device, through the spacing induction system contact grease of contact, the pressure that produces when grease moves down reflects the consistency of grease, and the pressure that produces when moving up reflects the viscosity of grease. CN201820648455.8 discloses a tension measuring device for measuring friction coefficient of metal material, which can conveniently and rapidly measure tension of metal material coated with lubricating grease on the surface under high contact pressure state, and improve working efficiency; CN202010455049.1 discloses an initial viscosity detection system of shield tail seal grease and a detection device thereof, and the loss can be obtained by comparing a first weighing value with a second weighing value, so that the initial viscosity of the shield tail seal grease can be judged. The grease experiment platform and the grease experiment method only aim at detecting the performance of a certain aspect of grease, cannot detect the comprehensive performance of the grease of the steel wire rope, particularly cannot detect the friction performance of the grease, do not consider auxiliary materials of the grease, and cannot detect the friction adhesion performance of the steel wire rope and the grease, so that the related detection results cannot be directly used as references for selecting the grease of the steel wire rope.
Therefore, the device and the method for detecting the friction adhesion performance of the friction increasing grease of the mine friction type hoist are provided, the friction of a steel wire rope and a gasket of the friction type hoist can be simulated, the friction coefficient, the adhesion and the adsorption are tested, the comprehensive performance of the friction increasing grease is researched, the friction increasing grease is favorably guided to correctly select the grease for the friction type hoist, and the device and the method have great significance for ensuring the use safety of the hoist.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides a device and a method for detecting the frictional adhesion performance of friction-increasing grease of a mine friction type hoist, which can simulate the friction between a liner of the friction type hoist and a steel wire rope and detect the friction coefficient, the adhesion and the adsorption of the friction-increasing grease.
The technical scheme is as follows: in order to achieve the purpose, the invention adopts the technical scheme that:
a friction adhesion performance detection device for friction increasing grease of a mine friction type hoist comprises a supporting system, a driving system, a transmission system and a detection system;
the supporting system comprises a main supporting platform, a vertical sliding table, a sliding rail and a suspension platform, wherein the vertical sliding table and the sliding rail are fixed on the main supporting platform in parallel, the suspension platform is horizontally fixed on the back side of the upper part of the vertical sliding table, and at least one suspension cylinder is arranged on the suspension platform;
the detection system comprises a three-dimensional force sensor, a loading plate, a friction device and a grease collection box, wherein the loading plate is horizontally fixed on one side of the vertical sliding table, the three-dimensional force sensor is fixed on the lower surface of the loading plate, the friction device is fixed on the lower surface of the three-dimensional force sensor, and the grease collection box is placed right below the suspension cylinder;
the transmission system comprises a sliding block, and the sliding block is positioned on the sliding rail and slides along the sliding rail; a steel wire sample to be detected is fixed on the sliding block, and when the detection device is in a working state, the steel wire sample to be detected is positioned right below the friction device;
the driving system comprises a first motor and a second motor, and the first motor is connected with the sliding block and drives the sliding block to move horizontally; the second motor is connected with the loading plate and drives the loading plate to move up and down.
Optionally, in an embodiment, the sliding block includes a first sliding block and a second sliding block, the corresponding steel wire sample to be tested includes a steel wire rope and a steel plate, and the steel plate is made of carbon steel; the corresponding friction devices respectively comprise a friction liner and a plate type friction liner sheet;
when the sliding block is a first sliding block, the steel wire rope is fixed on the first sliding block, and the friction liner is fixed on the lower surface of the three-dimensional force sensor;
when the sliding block is a second sliding block, the steel plate is fixed on the second sliding block, and the plate type friction lining sheet is fixed on the lower surface of the three-dimensional force sensor.
Optionally, in an embodiment, a groove is formed in the upper surface of the first slider and used for placing a steel wire rope, clamps are arranged at the two ends of the first slider, the radian of each clamp is the same as that of the steel wire rope, and the two ends of the steel wire rope are fixed in the clamps in a matching manner.
Optionally, in one embodiment, the plate-type friction lining plate is the same size as the steel plate and is a square plate-type structure.
Optionally, in an embodiment, the second slider has a protruding cylinder thereon, the steel plate has a hole correspondingly matched with the cylinder, and the cylinder is correspondingly inserted into the hole to fix the steel plate and the second slider.
Optionally, in an embodiment, the cylinder is located near an edge of the upper surface of the second slider.
Optionally, in an embodiment, the transmission system further includes a connecting rod and a ball screw, and the first motor is connected to the sliding block through the connecting rod to drive the sliding block to move horizontally; the second motor is connected with the loading plate through the ball screw and drives the loading plate to move up and down.
On the other hand, the invention also provides a method for detecting the frictional adhesion performance of the friction increasing grease of the mine friction type hoist, which is used for detecting the frictional adhesion performance of the friction increasing grease of the mine friction type hoist described in any one of the embodiments, and comprises the following steps:
s100, a sliding block is placed on a sliding rail, friction increasing grease is uniformly coated on the surfaces of a steel wire sample to be detected and a friction device, the steel wire sample to be detected is placed on the sliding block to be fixed, and the friction device is fixed with a three-dimensional force sensor and fixed on a loading plate;
s200, starting a second motor to drive the loading plate to move downwards, enabling the friction device to be in pre-tightening contact with a steel wire sample to be tested under the action of a normal loading force, monitoring the normal loading force through the three-dimensional force sensor, and stopping loading when the normal loading force reaches a set value or friction-increasing grease overflows;
s300, starting a first motor to drive a sliding block to slide along a sliding rail, monitoring horizontal force through the three-dimensional force sensor to obtain friction force or adhesion between friction-increasing grease and a steel wire sample to be detected, and calculating a friction coefficient by dividing the friction force by a normal loading force;
s400, cleaning the surface of a steel wire sample to be detected by using an ethanol-toluene mixture, and smearing friction-increasing grease after drying; the steel wire sample to be detected is vertically arranged on the suspension cylinder, the grease collecting box collects dripping friction-increasing grease, the weight of the grease in the grease collecting box is the dropping amount of the friction-increasing grease, and the adsorbability of the friction-increasing grease is evaluated according to the dropping amount.
Optionally, in an embodiment, when the sliding block is a first sliding block, the steel wire sample to be tested fixed on the first sliding block is a steel wire rope, and the friction device is a friction liner, the method includes the following steps:
s101, a first sliding block is placed on a sliding rail, friction increasing grease is uniformly coated on the surfaces of a steel wire rope and a friction liner, a steel wire sample to be tested is placed on the first sliding block to be fixed, and the friction liner is fixed with a three-dimensional force sensor and fixed on a loading plate;
s102, starting a second motor to drive the loading plate to move downwards, enabling the friction liner to be in pre-tightening contact with the steel wire rope under the action of a normal loading force, monitoring the normal loading force through the three-dimensional force sensor, and stopping loading when the normal loading force reaches 1-3Mpa according to an industrial standard and an actual working condition;
s103, starting a first motor to drive a first sliding block to slide along a sliding rail, enabling the sliding speed to reach 0.5-1.5mm/s according to industrial standards and actual working conditions, monitoring horizontal force through the three-dimensional force sensor to obtain friction force between friction-increasing grease and a steel wire rope, and calculating the friction coefficient by dividing the friction force by normal loading force.
Optionally, in an embodiment, when the sliding block is a second sliding block, the steel wire sample to be tested fixed on the second sliding block is a steel plate, and the friction device is a plate-type friction lining sheet, the method includes the following steps:
s201, a second sliding block is placed on a sliding rail, friction increasing grease is uniformly coated on the surfaces of a steel plate and a plate type friction liner sheet, the steel plate is placed on the second sliding block and fixed, and the plate type friction liner sheet is fixed with a three-dimensional force sensor and fixed on a loading plate;
s202, starting a second motor to drive the loading plate to move downwards, enabling the plate type friction liner sheet to be in pre-tightening contact with the steel plate under the action of a normal loading force, stopping loading when friction-increasing grease overflows, and removing the friction-increasing grease extruded from the periphery of the steel plate;
s203, starting a first motor to drive a second sliding block to slide along a sliding rail, monitoring horizontal force through the three-dimensional force sensor, and monitoring the maximum value of the horizontal force, namely the adhesion of friction-increasing grease, by the three-dimensional force sensor when the steel plate and the plate type friction liner start to slide away;
s204, cleaning the surface of the steel plate by using an ethanol-toluene mixture, and smearing friction-increasing grease after drying; the steel plate is vertically arranged on the suspension cylinder, the grease collecting box collects the dripping friction-increasing grease, the weight of the grease in the grease collecting box is the dropping amount of the friction-increasing grease, and the adsorbability of the friction-increasing grease is evaluated according to the dropping amount.
Has the advantages that: the invention provides a device and a method for detecting the friction and adhesion performance of friction-increasing grease of a mine friction type hoist, which are used for testing three performance indexes of friction coefficient, adhesion and adsorption of the friction-increasing grease, simulating the movement between a steel wire rope and a friction liner and realizing the detection of the friction performance of the friction-increasing grease with different hoisting models, different working conditions and different friction matching pairs; meanwhile, the adhesiveness of the friction-increasing grease can be judged according to the maximum force when the carbon steel sheet and the friction lining sheet start to slide relatively; the adsorption of the friction-increasing grease is detected by suspending the carbon steel sheet coated with the friction-increasing grease, collecting and weighing the dropped friction-increasing grease. Compared with other friction increasing grease detection devices and methods, the device and the method are complete in function and can be used for detecting the friction adhesion performance of the friction increasing grease of the mine friction type elevator in a targeted mode.
Drawings
Fig. 1 is a schematic structural view of a device for detecting friction performance of friction-increasing grease of a mine friction type hoist according to an embodiment of the invention;
FIG. 2 is an enlarged view of a portion of a fixture in accordance with an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an adhesion property detecting section according to an embodiment of the present invention;
in the figure, 1, a main supporting platform; 2. a motor support; 3. a, a motor; 4. a connecting rod; 5. a three-dimensional force sensor; 6. a loading plate; 7. a rolling screw rod; 8. a motor B; 9. a vertical sliding table; 10. suspending the platform; 11. a suspension cylinder; 12. a grease collection box; 13. a clamp; 14. a wire rope; 15. a friction pad; 16. a, sliding blocks; 17. a slide rail, 18, friction lining sheet; 19. a steel plate with holes; 20. and B, sliding blocks.
Detailed description of the preferred embodiments
The present invention will be further described with reference to the accompanying drawings.
A device for detecting the friction adhesion performance of friction-increasing grease of a mine friction type hoist comprises a supporting system, a driving system, a transmission system and a detection system, and all parts are specifically explained below.
A friction adhesion performance detection device for friction increasing grease of a mine friction type hoist comprises a supporting system, a driving system, a transmission system and a detection system;
as shown in fig. 1, the supporting system comprises a main supporting platform 1, a vertical sliding table 9, a sliding rail 17 and a suspension platform 10, wherein the vertical sliding table 9 and the sliding rail 17 are fixed on the main supporting platform 1 in parallel, the suspension platform 10 is horizontally fixed on the back side of the upper part of the vertical sliding table 9, and the suspension platform 10 is provided with at least one suspension cylinder 11;
the detection system comprises a three-dimensional force sensor 5, a loading plate 6, a friction device and a grease collection box 12, wherein the loading plate 6 is horizontally fixed on one side of the vertical sliding table 9, the three-dimensional force sensor 5 is fixed on the lower surface of the loading plate 6, and is used for collecting the pressure of the friction gasket 15 on the steel wire rope 14 and the horizontal friction force between the friction gasket 15 and the steel wire rope 14; the friction device is fixed on the lower surface of the three-dimensional force sensor 5, and the grease collecting box 12 is placed right below the suspension cylinder 11; in an example, the three-dimensional force sensor 5 is fixed on the lower surface of the loading plate 6 by a bolt, and the friction device is fixed under the three-dimensional force sensor 5 by a bolt, or other fixing manners, such as adhesion, are within the protection scope of the embodiment of the present invention, and the embodiment is not limited in this embodiment.
As shown in fig. 1, the transmission system includes a slider, which is located on the slide rail 17 and slides along the slide rail 17; a steel wire sample to be detected is fixed on the sliding block, and when the detection device is in a working state, the steel wire sample to be detected is positioned right below the friction device;
the driving system comprises a first motor 3 and a second motor 8, wherein the first motor 3 is connected with the sliding block and drives the sliding block to move horizontally; the second motor 8 is connected with the loading plate 6 and drives the loading plate 6 to move up and down.
As an optional embodiment, the slide block comprises a first slide block 16 and a second slide block 20, the corresponding steel wire sample to be tested respectively comprises a steel wire rope 14 and a steel plate 19, and the steel plate 19 is made of carbon steel; the corresponding friction means comprise a friction pad 15, a plate-type friction pad sheet 18, respectively;
as shown in fig. 2, when the slide block is a first slide block 16, a steel wire rope 14 is fixed on the first slide block 16, and a friction pad 15 is fixed on the lower surface of the three-dimensional force sensor 5;
as shown in fig. 3, when the slider is the second slider 20, the steel plate 19 is fixed on the second slider 20, and the plate type friction pad sheet 18 is fixed on the lower surface of the three-dimensional force sensor 5.
The friction-increasing grease friction adhesion performance detection device for the mine friction type hoister provided by the embodiment is mainly used for testing three performance indexes of friction coefficient, adhesion and adsorption of friction-increasing grease, on one hand, the first motor 3 drives the first sliding block to reciprocate, friction transmission between a friction liner 15 and a steel wire rope 14 of the friction type hoister can be simulated, and the friction force and the friction coefficient of the friction-increasing grease and the steel wire rope 14 are tested through the three-dimensional force sensor 5. By changing the sizes of the first sliding block 16, the friction liner 15 and the steel wire rope 14, the size and the sliding speed of the loading force can be changed, and the friction performance detection of friction increasing grease of different lifting models and different working conditions and friction matching pairs is realized. The adhesiveness of the friction-increasing grease is judged by the maximum force at which the steel plate 19, i.e., the carbon steel plate and the plate-type friction lining sheet 18 start to slide relative to each other; the adsorption of the friction-increasing grease is detected by suspending the carbon steel sheet coated with the friction-increasing grease, collecting and weighing the dropped friction-increasing grease.
As an alternative embodiment, the upper surface of the first sliding block 16 has a groove for placing the steel cable 14, the two ends of the first sliding block 16 are both provided with clamps 13, as shown in fig. 2, the radian of the clamps 13 is the same as that of the steel cable 14, and the two ends of the steel cable 14 are fixed in the clamps 13 in a matching manner. In one example, the clamp 13 may be formed by two semicircular structures, one of which is fixed to an end of the first slider 16, the wire rope 14 is placed in a groove on an upper surface of the first slider 16, both ends of the wire rope are placed in the semicircular structures, an upper semicircular structure is covered, a right nut of the clamp 13 is adjusted to place the wire rope 14 in a tensioned state, and both ends of the wire rope 14 are fixed by bolts of the clamp 13, so that the wire rope 14 is fixed to the first slider 16. In other embodiments, other fixing manners may be adopted to fix the cable 14 to the first slider 16, which is not limited in this embodiment.
As an alternative embodiment, shown in FIG. 3, plate type friction lining sheet 18 is the same size as steel plate 19 and is a square sheet like structure.
In one example, the second slider 20 has a raised cylinder 201 thereon, the steel plate 19 has a hole 191 corresponding to the cylinder 201, and the cylinder 201 is inserted into the hole 191 to fix the steel plate 19 to the second slider 20. Alternatively, the cylinder is located on the upper surface of the second slider 20 near the edge. The steel plate 19 and the second sliding block 20 are easily fixed by adopting a simple pore fit mode in the embodiment. In another example, the second sliding block 20 and the steel plate 19 may be provided with screw holes, and the steel plate 19 and the second sliding block 20 may be fixed by bolts. In other examples, other securing means may also be used.
As an optional embodiment, the transmission system further comprises a connecting rod 4 and a ball screw 7, and the first motor 3 is connected with the sliding block through the connecting rod 4 to drive the sliding block to move horizontally; the second motor 8 is connected with the loading plate 6 through a ball screw 7, and drives the loading plate 6 to move up and down. The connecting rod and the ball screw are common transmission connecting pieces and are easy to obtain and install. In one example, the support system further comprises a motor support 2, and the transmission system further comprises a connecting rod 4 and a ball screw 7. The motor support 2 is fixed on the main supporting platform 1, the first motor 3 is installed on the motor support 2, the first motor 3 is connected with the connecting rod 4 through a bolt, and the first motor 3 drives the sliding block to move through the connecting rod 4; the second motor 8 is installed on the vertical sliding table 9, the second motor 8 is connected with the ball screw 7, the ball screw 7 is connected with the loading plate 6, and the second motor 8 drives the loading plate 6 to move through the ball screw 7.
On the other hand, the invention also provides a method for detecting the frictional adhesion performance of the friction increasing grease of the mine friction type hoist, which is used for detecting the frictional adhesion performance of the friction increasing grease of the mine friction type hoist described in any one of the embodiments, and comprises the following steps:
s100, a slide block is placed on a slide rail 17, friction increasing grease is uniformly coated on the surfaces of a steel wire sample to be detected and a friction device, the steel wire sample to be detected is placed on the slide block to be fixed, and the friction device is fixed with a three-dimensional force sensor 5 and is fixed on a loading plate 6;
s200, starting a second motor 8 to drive a loading plate 6 to move downwards, enabling a friction device to be in pre-tightening contact with a steel wire sample to be tested under the action of normal loading force, monitoring the normal loading force through a three-dimensional force sensor 5, and stopping loading when the normal loading force reaches a set value or friction-increasing grease overflows;
s300, starting a first motor 3 to drive a sliding block to slide along a sliding rail 17, monitoring horizontal force through a three-dimensional force sensor 5 to obtain friction force or adhesion between friction-increasing grease and a steel wire sample to be detected, and calculating a friction coefficient by dividing the friction force by a normal loading force;
s400, cleaning the surface of a steel wire sample to be detected by using an ethanol-toluene mixture, and smearing friction-increasing grease after drying; the steel wire sample to be measured is vertically arranged on the suspension cylinder 11, the oil collecting box 12 collects dripping friction-increasing oil, the weight of the oil in the oil collecting box is the dropping amount of the friction-increasing oil, and the adsorption of the friction-increasing oil is evaluated according to the dropping amount.
First, as an optional embodiment of detecting the friction force and the friction coefficient, as shown in fig. 1 and 2, the sliding block is a first sliding block 16, the steel wire sample to be detected fixed on the first sliding block 16 is a steel wire rope 14, and the friction device is a friction liner 15, where the method of this embodiment includes the following steps:
s101, placing a first sliding block 16 on a sliding rail 17, uniformly coating friction-increasing grease on the surfaces of a steel wire rope 14 and a friction liner 15, filling gaps among strands and threads of the steel wire rope 14, and still seeing the steel wire strands, scraping off redundant friction-increasing grease, and standing for 1 hour at a ventilation position, wherein the gaps are just covered by the friction-increasing grease on the surfaces of the steel wire rope 14 and the rope grooves of the friction liner 15. The steel wire rope 14 is placed on the first sliding block 16 to be fixed, a nut on the right side of the clamp 13 is adjusted to enable the steel wire rope 14 to be in a tensioning state, and two ends of the steel wire rope 14 are fixed through the clamp 13; the friction liner 15 is fixed with the three-dimensional force sensor 5 through a bolt and is fixed on the loading plate 6;
s102, starting a second motor 8 to drive a ball screw 7, driving the ball screw 7 to drive a loading plate 6 to move downwards, enabling a friction liner 15 to be in pre-tightening contact with a steel wire rope 14 under the action of normal loading force, monitoring the normal loading force through a three-dimensional force sensor 5, and stopping loading when the normal loading force reaches 1-3Mpa according to industrial standards and actual working conditions; in one example, the normal loading force is preferably 2.5 Mpa;
s103, starting the first motor 3, driving the connecting rod 4, driving the first sliding block 16 to slide along the sliding rail 17 by the connecting rod 4, enabling the sliding speed to reach 0.5-1.5mm according to the industry standard and the actual working condition, monitoring the horizontal force by the three-dimensional force sensor 5 to obtain the friction force between the friction-increasing grease and the steel wire rope 14, and calculating the friction coefficient by dividing the friction force by the normal loading force. In one example, the slip speed is preferably 1 mm/s.
In other embodiments, the first sliding block 16 and the friction liner 15 can be detached, sliding blocks with different sizes, friction liners and steel wire ropes with different diameters can be mounted according to actual requirements for detection, and the friction force and the friction coefficient of friction increasing grease can be tested; the size and the sliding speed of the loading force can be changed, and the detection of the friction force and the friction coefficient of the friction-increasing grease under different lifting working conditions is realized.
Next, as an alternative embodiment of adhesion and adsorption detection, as shown in fig. 1 and 3, the slide block is a second slide block 20, the steel wire sample to be tested fixed on the second slide block 20 is a steel plate 19, and the friction device is a plate-type friction pad sheet 18, and the method of this embodiment includes the following steps:
s201, a second sliding block 20 with a screw hole is arranged on a sliding rail 17, friction increasing grease is uniformly coated on the surfaces of a steel plate 19 and a plate type friction liner sheet 18 according to 75 g/square meter, a perforated steel plate 19 with the thickness of 100mm multiplied by 2mm is fixed on the second sliding block 20 through bolts, and the perforated steel plate is made of steel wire rope common carbon steel; a plate-type friction pad sheet 18 of 100mm x 2mm is fixed to the three-dimensional force sensor 5 and fixed to the load plate 6;
s202, starting a second motor 8 to drive a ball screw 7, driving the ball screw 7 to drive a loading plate 6 to move downwards, enabling a plate type friction lining sheet 18 and a steel plate 19 to realize pre-tightening contact under the action of normal loading force, stopping loading when friction-increasing grease just overflows, and removing the friction-increasing grease extruded around the steel plate 19;
s203, starting the first motor 3, driving the connecting rod 4, driving the second sliding block 20 to slide along the sliding rail 17 by the connecting rod 4, monitoring horizontal force through the three-dimensional force sensor 5, and monitoring the maximum value of the horizontal force by the three-dimensional force sensor 5 when the steel plate 19 and the plate type friction liner 18 start to slide away, namely the adhesion of friction-increasing grease, wherein the adhesion is better when the force is larger;
s204, cleaning the surface of the steel plate 19 by using an ethanol-toluene mixture, putting the cleaned steel plate into an oven with the temperature of 80 ℃, taking out the steel plate after drying, uniformly coating friction-increasing grease on the surface of the steel plate 19 with holes according to 75 g/square meter, and horizontally placing the steel plate for two days at room temperature; vertically arranging a steel plate 19 on the suspension cylinder 11, collecting the dripping friction-increasing grease by the grease collecting box 12 right below, and weighing and recording the grease collecting box 12 every 12 hours until the weight is not obviously changed; the weight of the grease in the grease collecting box is the dropping amount of the friction-increased grease, the adsorption of the friction-increased grease is evaluated according to the dropping amount, and the adsorption is better when the dropping amount is less.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (10)
1. A friction adhesion performance detection device for friction-increasing grease of a mine friction type hoist is characterized by comprising a supporting system, a driving system, a transmission system and a detection system;
the supporting system comprises a main supporting platform (1), a vertical sliding table (9), a sliding rail (17) and a hanging platform (10), wherein the vertical sliding table (9) and the sliding rail (17) are fixed on the main supporting platform (1) in parallel, the hanging platform (10) is horizontally fixed on the back side of the upper part of the vertical sliding table (9), and at least one hanging cylinder (11) is arranged on the hanging platform (10);
the detection system comprises a three-dimensional force sensor (5), a loading plate (6), a friction device and a grease collection box (12), wherein the loading plate (6) is horizontally fixed on one side of the vertical sliding table (9), the three-dimensional force sensor (5) is fixed on the lower surface of the loading plate (6), the friction device is fixed on the lower surface of the three-dimensional force sensor (5), and the grease collection box (12) is placed under the suspension cylinder (11);
the transmission system comprises a sliding block, and the sliding block is positioned on the sliding rail (17) and slides along the sliding rail (17); a steel wire sample to be detected is fixed on the sliding block, and when the detection device is in a working state, the steel wire sample to be detected is positioned right below the friction device;
the driving system comprises a first motor (3) and a second motor (8), wherein the first motor (3) is connected with the sliding block and drives the sliding block to move horizontally; the second motor (8) is connected with the loading plate (6) and drives the loading plate (6) to move up and down.
2. The device for detecting the frictional adhesion performance of the friction-increasing grease of the mine friction type hoist as claimed in claim 1, wherein the slide blocks comprise a first slide block (16) and a second slide block (20), the corresponding steel wire samples to be detected respectively comprise a steel wire rope (14) and a steel plate (19), and the steel plate (19) is made of carbon steel; the corresponding friction devices respectively comprise a friction pad (15) and a plate type friction pad sheet (18);
when the sliding block is a first sliding block (16), the steel wire rope (14) is fixed on the first sliding block (16), and the friction pad (15) is fixed on the lower surface of the three-dimensional force sensor (5);
when the sliding block is a second sliding block (20), the steel plate (19) is fixed on the second sliding block (20), and the plate type friction lining sheet (18) is fixed on the lower surface of the three-dimensional force sensor (5).
3. The device for detecting the frictional adhesion performance of the friction increasing grease of the mine friction type hoist as claimed in claim 2, wherein the upper surface of the first sliding block (16) is provided with a groove for placing a steel wire rope (14), the two ends of the first sliding block (16) are respectively provided with a clamp (13), the radian of each clamp (13) is the same as that of the steel wire rope (14), and the two ends of the steel wire rope (14) are matched and fixed in the clamps (13).
4. The apparatus for testing the frictional adhesion of friction enhancing grease in a mine friction hoist as defined in claim 2 wherein the plate friction lining sheet (18) is of a square sheet configuration and is of the same size as the steel plate (19).
5. The apparatus for detecting frictional adhesion of friction enhancing grease in a mine friction hoist as claimed in claim 2, wherein the second slider (20) has a raised cylinder (201), the steel plate (19) has a hole (191) corresponding to the cylinder (201), and the cylinder (201) is inserted into the hole (191) to fix the steel plate (19) to the second slider (20).
6. The apparatus for testing frictional adhesion of grease to a mine friction hoist as defined in claim 5, wherein the cylinder is located on the upper surface of the second slider (20) near the edge.
7. The apparatus for detecting frictional adhesion of friction-increasing grease of mine friction hoist according to claim 1, wherein the transmission system further comprises a connecting rod (4) and a ball screw (7), the first motor (3) is connected with the sliding block through the connecting rod (4) to drive the sliding block to move horizontally; the second motor (8) is connected with the loading plate (6) through the ball screw (7) and drives the loading plate (6) to move up and down.
8. A method for detecting the frictional adhesion performance of friction-increasing grease of a mine friction type hoist, which is characterized in that the method uses the device for detecting the frictional adhesion performance of the friction-increasing grease of the mine friction type hoist according to claims 1 to 7 to detect, and comprises the following steps:
s100, a sliding block is placed on a sliding rail (17), friction increasing grease is uniformly coated on the surfaces of a steel wire sample to be detected and a friction device, the steel wire sample to be detected is placed on the sliding block to be fixed, and the friction device is fixed with a three-dimensional force sensor (5) and is fixed on a loading plate (6);
s200, starting a second motor (8) to drive the loading plate (6) to move downwards, enabling the friction device to be in pre-tightening contact with a steel wire sample to be tested under the action of normal loading force, monitoring the normal loading force through the three-dimensional force sensor (5), and stopping loading when the normal loading force reaches a set value or friction-increasing grease overflows;
s300, starting a first motor (3), driving a sliding block to slide along a sliding rail (17), monitoring a force in the horizontal direction through a three-dimensional force sensor (5), obtaining a friction force or adhesion between friction-increasing grease and a steel wire sample to be detected, and calculating a friction coefficient by dividing the friction force by a normal loading force;
s400, cleaning the surface of a steel wire sample to be detected by using an ethanol-toluene mixture, and smearing friction-increasing grease after drying; the steel wire sample to be detected is vertically arranged on a suspension cylinder (11), the oil collecting box (12) collects the dripping friction-increasing oil, the weight of the oil in the oil collecting box is the dropping amount of the friction-increasing oil, and the adsorbability of the friction-increasing oil is evaluated according to the dropping amount.
9. The method for detecting the frictional adhesion performance of the friction increasing grease of the mine friction type hoist as claimed in claim 8, wherein when the slide block is a first slide block (16), the steel wire sample to be tested fixed on the first slide block (16) is a steel wire rope (14), the friction device is a friction liner (15), and the method comprises the following steps:
s101, a first sliding block (16) is placed on a sliding rail (17), friction increasing grease is uniformly coated on the surfaces of a steel wire rope (14) and a friction liner (15), a steel wire sample to be tested is placed on the first sliding block (16) to be fixed, and the friction liner (15) is fixed with a three-dimensional force sensor (5) and is fixed on a loading plate (6);
s102, starting a second motor (8) to drive the loading plate (6) to move downwards, enabling the friction liner (15) to be in pre-tightening contact with the steel wire rope (14) under the action of a normal loading force, monitoring the normal loading force through the three-dimensional force sensor (5), and stopping loading when the normal loading force reaches 1-3 Mpa;
s103, starting the first motor (3), driving the first sliding block (16) to slide along the sliding rail (17) to enable the sliding speed to reach 0.5-1.5mm/s, monitoring the force in the horizontal direction through the three-dimensional force sensor (5) to obtain the friction force between the friction-increasing grease and the steel wire rope (14), and calculating the friction coefficient by dividing the friction force by the normal loading force.
10. The method for detecting the frictional adhesion of grease added to a mine friction hoist as claimed in claim 8, wherein when the slide block is a second slide block (20), the steel wire sample to be tested fixed on the second slide block (20) is a steel plate (19), the friction device is a plate type friction liner sheet (18), and the method comprises the following steps:
s201, a second sliding block (20) is placed on a sliding rail (17), friction increasing grease is uniformly coated on the surfaces of a steel plate (19) and a plate type friction liner sheet (18), the steel plate (19) is placed on the second sliding block (20) and fixed, and the plate type friction liner sheet (18) is fixed with a three-dimensional force sensor (5) and fixed on a loading plate (6);
s202, starting a second motor (8) to drive the loading plate (6) to move downwards, enabling the plate type friction gasket sheet (18) to be in pretightening contact with the steel plate (19) under the action of normal loading force, stopping loading when friction-increasing grease overflows, and removing the friction-increasing grease extruded around the steel plate (19);
s203, starting a first motor (3) to drive a second sliding block (20) to slide along a sliding rail (17), monitoring horizontal force through a three-dimensional force sensor (5), and monitoring the maximum value of the horizontal force, namely the adhesion of friction-increasing grease, by the three-dimensional force sensor (5) when the steel plate (19) and the plate type friction liner (18) start to slide away;
s204, cleaning the surface of the steel plate (19) by using an ethanol-toluene mixture, and smearing friction-increasing grease after drying; the steel plate (19) is vertically arranged on the suspension cylinder (11), the oil collecting box (12) collects the dripping friction-increasing oil, the weight of the oil in the oil collecting box is the dropping amount of the friction-increasing oil, and the adsorption of the friction-increasing oil is evaluated according to the dropping amount.
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| GB1494274A (en) * | 1976-05-07 | 1977-12-07 | Rubber & Plastic Res Ass | Friction test apparatus |
| CN2526831Y (en) * | 2002-01-30 | 2002-12-18 | 李良洲 | Analogy tester for friction performance of friction liner |
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