Reciprocating testing machine for evaluating lubricity of diesel oil

Abstract

The utility model discloses a reciprocating testing machine for evaluating diesel oil lubricity, and particularly relates to the technical field of diesel oil lubrication experiment devices, which comprises a box body, a connecting seat I is arranged in the box body, a mounting groove is formed in the middle of the top end of the connecting seat I, and a servo motor is mounted on the mounting groove; a plurality of second connecting seats are installed at the position, away from the axis of the first connecting seat, of the first connecting seat in an annular array mode, a plurality of supporting frames are installed at the positions, located on the outer sides of the second connecting seats, of the first connecting seat in an annular array mode, and reciprocating testing assemblies are arranged at the tops of the supporting frames; and the servo motor and the plurality of reciprocating test assemblies are in transmission through a plurality of connecting ropes. According to the reciprocating testing machine for evaluating the lubricity of the diesel oil, the servo motor is arranged to drive the reciprocating testing assemblies on the first connecting base to reciprocate, so that lubricity testing is carried out on various types of diesel oil at the same time, and the diversified detection requirements of the lubricity of the diesel oil are met.

Description

Technical Field

[0001] The utility model relates to the technical field of diesel lubrication experimental devices, in particular to a reciprocating testing machine used for diesel lubricity evaluation. Background Art

[0002] Diesel lubricity assessment usually refers to the assessment of diesel lubricity. Diesel lubricity is very important for the normal operation of diesel engines. Poor lubricity may cause excessive wear of components such as the engine's high-pressure pump, shortening its service life. Currently, the commonly used method for assessing diesel lubricity is the high-frequency reciprocating test machine method.

[0003] Most existing reciprocating testing machines can only measure one type of petroleum, which is not conducive to comprehensive and efficient performance evaluation of related oil products, and cannot meet diverse testing needs. Utility Model Content

[0004] The main purpose of the utility model is to provide a reciprocating testing machine for evaluating the lubricity of diesel fuel, which can effectively solve the problems raised in the above-mentioned prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A reciprocating test machine for evaluating the lubricity of diesel fuel comprises a box body, a connecting seat 1 is provided in the box body, a mounting groove is provided in the middle of the top of the connecting seat 1, a servo motor is installed on the mounting groove, a plurality of connecting seats 2 are installed in a circular array on the connecting seat 1 away from its axis, a plurality of support frames are installed in a circular array on the outside of the plurality of connecting seats 2 on the connecting seat 1, a reciprocating test assembly is provided on the top of each of the plurality of support frames, and the servo motor and the plurality of reciprocating test assemblies are transmitted via a plurality of connecting ropes.

[0007] Preferably, the output shaft of the servo motor is fixedly mounted with a connecting block via a coupling, and the connecting block is provided with slots in the middle of four end faces along its height direction, and fixing rods are fixedly mounted on the inner side walls on both sides of the four slots.

[0008] Preferably, the multiple reciprocating test assemblies all include a test bench, and the multiple test benches are respectively fixedly mounted on the top ends of the multiple support frames, and the end faces of the multiple test benches close to each other are all open, and the tops of the multiple test benches are fixedly mounted with a liquid supply box on one side close to their open ends.

[0009] The plurality of test benches are all slidably mounted with test pieces along their open ends. The end faces of the plurality of test benches close to each other are all provided with clamping tables. The end faces of the plurality of test pieces close to each other are respectively clamped and connected to the plurality of clamping tables.

[0010] A connection block 1 is installed on the end faces of the multiple test benches that are away from each other, and a connection block 2 is fixedly installed on the end of the multiple test pieces close to the connection block 1. The multiple connection blocks 1 and the multiple connection blocks 2 are respectively connected by hook springs.

[0011] Preferably, a plurality of the clamping tables are provided with a clamping groove at one end close to the test table, a plurality of the top ends of the clamping tables are provided with a penetrating threaded hole, a plurality of the threaded holes are threadedly installed with a handle screw on the inner wall, and the plurality of the handle screws are respectively in contact with a plurality of test pieces through one end of the plurality of threaded holes.

[0012] Preferably, fixing ears are fixedly installed on the end surfaces of the plurality of clamping platforms that are close to each other, and the plurality of fixing ears are bound and connected to the plurality of fixing rods by a plurality of connecting ropes.

[0013] Preferably, pulleys are rotatably mounted on the tops of the plurality of connecting seats 2, and the middle portions of the plurality of connecting ropes are respectively placed on the plurality of pulleys.

[0014] Preferably, a sealed door is installed at the front end of the box body, and sliding bars are fixedly installed on both sides of the inner cavity of the box body. Two sliding rails that are compatible with the two sliding bars are provided at both ends of the connecting seat along its width direction, and a pull groove is provided in the middle of the front end of the connecting seat.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In the present invention, a servo motor is provided to drive multiple reciprocating test assemblies on a connecting seat to perform reciprocating motion, thereby performing lubricity tests on various types of diesel fuels simultaneously, thereby meeting the diverse testing needs for diesel fuel lubricity.

[0017] 2. In the present invention, a clamping table is provided to clamp and fix the test piece, thereby facilitating the installation and disassembly of the test piece, making it easy to remove the test piece after reciprocating testing to observe its wear, and facilitating the subsequent detection and evaluation of diesel lubricity. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure of the connecting seat in the utility model;

[0020] Figure 3 This is a schematic diagram of the connection structure between the servo motor and the connecting seat in the present utility model;

[0021] Figure 4This is a schematic diagram of the connection structure between the reciprocating test assembly and the connecting rope in the present invention;

[0022] Figure 5 For this utility model Figure 4 A magnified schematic diagram of the node at A in the middle;

[0023] Figure 6 It is a schematic diagram of the cross-sectional structure of the box body in the present utility model.

[0024] In the figure: 1. Box body; 11. Sealing door; 13. Slide bar; 2. Connecting seat 1; 21. Slide rail; 22. Pull groove; 23. Mounting groove; 3. Support frame; 4. Servo motor; 41. Connecting block; 411. Slot; 412. Fixing rod; 5. Connecting rope; 6. Connecting seat 2; 61. Pulley; 7. Reciprocating test assembly; 71. Test bench; 711. Connecting block 1; 713. Hook spring; 714. Liquid supply box; 72. Clamping table; 721. Clamping groove; 722. Threaded hole; 723. Handle screw; 724. Fixing ear; 73. Test piece; 731. Connecting block 2. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0026] like Figures 1-6 As shown, a reciprocating test machine for evaluating the lubricity of diesel fuel includes a housing 1, a connecting seat 2 is provided in the housing 1, a mounting groove 23 is provided in the middle of the top of the connecting seat 2, a servo motor 4 is installed on the mounting groove 23, a plurality of connecting seats 2 6 are installed in a circular array on the connecting seat 1 2 away from its axis, a plurality of support frames 3 are installed in a circular array on the outside of the plurality of connecting seats 2 6 on the connecting seat 1 2, a reciprocating test assembly 7 is provided on the top of the plurality of support frames 3, and the servo motor 4 and the plurality of reciprocating test assemblies 7 are transmitted through a plurality of connecting ropes 5.

[0027] During use, this solution first removes the connecting seat 2 from the box body 1, pours diesel into the reciprocating test assembly 7, and then places the connecting seat 2 into the box body 1. By setting a servo motor 4 to drive multiple reciprocating test assemblies 7 on the connecting seat 2 to reciprocate, the lubricity test of various types of diesel can be performed simultaneously, thereby meeting the diverse detection needs of diesel lubricity.

[0028] Specifically, the output shaft of the servo motor 4 is fixedly mounted with a connecting block 41 through a coupling. Slots 411 are provided in the middle of the four end faces along the height direction of the connecting block 41. Fixing rods 412 are fixedly mounted on the inner side walls of the four slots 411 on both sides.

[0029] Multiple reciprocating test assemblies 7 all include a test table 71, and multiple test tables 71 are respectively fixedly installed on the top of multiple support frames 3. The end faces of multiple test tables 71 that are close to each other are all open. The tops of multiple test tables 71 are fixedly installed with a liquid supply box 714 on one side near their open ends. Multiple test tables 71 are slidably installed with test pieces 73 along the direction of their open ends. Clamping tables 72 are provided on the end faces of multiple test tables 71 that are close to each other. The end faces of multiple test pieces 73 that are close to each other are respectively clamped and connected with multiple clamping tables 72. Connecting blocks 1 711 are installed on the end faces of multiple test tables 71 that are away from each other. Connecting blocks 2 731 are fixedly installed on the ends of multiple test pieces 73 that are close to connecting block 1 711. Multiple connecting blocks 1 711 and multiple connecting blocks 2 731 are respectively connected by hook springs 713.

[0030] Fixing ears 724 are fixedly installed on the end surfaces of the multiple clamping platforms 72 that are close to each other. The multiple fixing ears 724 are bound and connected to the multiple fixing rods 412 through multiple connecting ropes 5.

[0031] The servo motor 4 is started. The output shaft of the servo motor 4 drives the connecting block 41 downward, and pulls the fixing ears 724 on the multiple clamping tables 72 through the multiple connecting ropes 5. The end of the clamping table 72 away from the fixing ears 724 is clamped and installed with the test piece 73. In this way, when the clamping table 72 is pulled, the test piece 73 is driven to slide frictionally along the inner cavity of the test table 71.

[0032] On the contrary, when the servo motor 4 drives the connecting block 41 upward, a hook spring 713 is set, one end of the hook spring 713 is hung on the connecting block 2 731 on one end of the test piece 73, and the other end of the hook spring 713 is hung on the connecting block 1 711 installed on one side of the test bench 71. In this way, the hook spring 713 is pulled by the test piece 73 during the downward process of the connecting block 41. When the connecting block 41 moves upward, the hook spring 713 pulls the test piece 73 to reset due to the elastic force, thereby realizing the reciprocating motion of the test piece 73 in the inner cavity of the test bench 71.

[0033] Pour diesel into the liquid supply tank 714 on the test bench 71. The liquid supply tank 714 is connected to the inner cavity of the test bench 71. In this way, when the test piece 73 reciprocates in the inner cavity of the test bench 71, the diesel in the liquid supply tank 714 will infiltrate the outer surface of the test piece 73, thereby achieving the effect of diesel lubrication test.

[0034] Furthermore, multiple clamping platforms 72 are provided with clamping grooves 721 at one end close to the test platform 71, and multiple clamping platforms 72 are provided with penetrating threaded holes 722 at the top. Handle screws 723 are threadedly installed on the inner walls of the multiple threaded holes 722, and the multiple handle screws 723 are respectively in contact with the multiple test pieces 73 through one end of the multiple threaded holes 722.

[0035] Place the end of the test piece 73 away from the connecting block 2 731 into the clamping groove 721, turn the handle screw 723 to clamp and fix the test piece 73 in the clamping groove 721, so that the test piece 73 is clamped and fixed, turn the handle screw 723 in the opposite direction to release the clamping effect between it and the test piece 73, so that the test piece 73 can be taken out for evaluation and replacement.

[0036] Furthermore, pulleys 61 are rotatably mounted on the tops of the multiple connecting seats 6, and the middle parts of the multiple connecting ropes 5 are respectively placed on the multiple pulleys 61.

[0037] A pulley 61 is provided to support the middle part of the tensioned connecting rope 5. When the connecting rope 5 is pulled by the connecting block 41, the middle part of the connecting rope can slide along the outer surface of the pulley 61, preventing the connecting rope 5 from loosening due to lack of tension during the upward process of the connecting block 41, thereby avoiding the phenomenon of the connecting rope 5 being entangled due to looseness.

[0038] Specifically, a sealed door 11 is installed at the front end of the box body 1, and sliding bars 13 are fixedly installed on both sides of the inner cavity of the box body 1. Two sliding rails 21 that are compatible with the two sliding bars 13 are provided at both ends of the connecting seat 2 along its width direction, and a groove 22 is provided in the middle of the front end of the connecting seat 2.

[0039] During the experiment, in order to prevent the reciprocating test assembly 7 from being contaminated by the diesel splashing due to the violent movement during the reciprocating motion, the sealing door 11 is closed to form a closed space in the connecting seat 2 to prevent the diesel from overflowing during the test. At the same time, the connecting seat 2 slides on the slide bars 13 on both sides of the inner cavity of the box body 1 through the slide rails 21. This makes it convenient to pull the connecting seat 2 out of the inner cavity of the box body 1 in the early stage of the experiment and to oil the reciprocating test assembly 7 on the connecting seat 2. It is also convenient to pull the connecting seat 2 out of the inner cavity of the box body 1 in the later stage of the experiment and take out the test piece 73 on the connecting seat 2 for testing and evaluation.

[0040] It should be noted that the specific installation method of the servo motor 4, the circuit connection method and the control method used in the present invention are all conventional designs and will not be elaborated in detail in the present invention.

[0041] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A reciprocating testing machine for evaluating the lubricity of diesel fuel, comprising a housing (1), characterized in that: A connecting seat (2) is provided in the box body (1), a mounting groove (23) is provided in the middle of the top of the connecting seat (2), a servo motor (4) is installed on the mounting groove (23), a plurality of connecting seats (6) are installed in a circular array away from the axis of the connecting seat (2), a plurality of support frames (3) are installed in a circular array outside the plurality of connecting seats (6) on the connecting seat (2), a reciprocating test assembly (7) is provided on the top of the plurality of support frames (3), and the servo motor (4) and the plurality of reciprocating test assemblies (7) are driven by a plurality of connecting ropes (5).

2. A reciprocating testing machine for diesel lubricity evaluation according to claim 1, characterized in that: The output shaft of the servo motor (4) is fixedly mounted with a connecting block (41) via a coupling. The connecting block (41) is provided with slots (411) in the middle of four end faces along its height direction. The four slots (411) are fixedly mounted with fixing rods (412) along the inner side walls on both sides thereof.

3. A reciprocating testing machine for diesel lubricity evaluation according to claim 2, characterized in that: The plurality of reciprocating test assemblies (7) each include a test table (71), the plurality of test tables (71) are respectively fixedly mounted on the top ends of the plurality of support frames (3), the end faces of the plurality of test tables (71) that are close to each other are all open, and a liquid supply box (714) is fixedly mounted on one side of the top of the plurality of test tables (71) close to the open end thereof; The plurality of test benches (71) are all slidably mounted with test pieces (73) along the direction of their open ends, the end surfaces of the plurality of test benches (71) that are close to each other are all provided with clamping tables (72), and the end surfaces of the plurality of test pieces (73) that are close to each other are respectively clamped and connected with the plurality of clamping tables (72); A connecting block 1 (711) is installed on the end surfaces of the plurality of test benches (71) that are away from each other, and a connecting block 2 (731) is fixedly installed on one end of the plurality of test pieces (73) close to the connecting block 1 (711), and the plurality of connecting blocks 1 (711) and the plurality of connecting blocks 2 (731) are connected respectively via hook springs (713).

4. A reciprocating testing machine for diesel lubricity evaluation according to claim 3, characterized in that: A plurality of the clamping platforms (72) are provided with a clamping groove (721) at one end close to the test platform (71), a plurality of the top ends of the clamping platforms (72) are provided with a through threaded hole (722), a plurality of the inner walls of the threaded holes (722) are threadedly mounted with a handle screw (723), and the plurality of the handle screws (723) are respectively in contact with a plurality of test pieces (73) through one end of the plurality of the threaded holes (722).

5. A reciprocating testing machine for diesel lubricity evaluation according to claim 4, characterized in that: A fixing ear (724) is fixedly installed on the end surfaces of the plurality of clamping platforms (72) that are close to each other, and the plurality of fixing ears (724) and the plurality of fixing rods (412) are respectively bound and connected via a plurality of connecting ropes (5).

6. A reciprocating testing machine for diesel lubricity evaluation according to claim 5, characterized in that: The tops of the plurality of connecting seats (6) are all rotatably mounted with pulleys (61), and the middle parts of the plurality of connecting ropes (5) are respectively placed on the plurality of pulleys (61).

7. The reciprocating testing machine for diesel lubricity evaluation according to claim 1, characterized in that: The front end of the box body (1) is opened and closed with a sealed door (11), and both sides of the inner cavity of the box body (1) are fixedly installed with slide bars (13), and two slide rails (21) adapted to the two slide bars (13) are provided at both ends of the width direction of the connecting seat (2), and a groove (22) is provided in the middle of the front end of the connecting seat (2).

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