A rake tooth structure performance detection device for railway screening machine

Abstract

A rake tooth structure performance detection device for a railway screening machine comprises a detection box, a vertically arranged annular crawler is arranged in the detection box, an active crawler wheel and a driven crawler wheel are arranged at both ends of the crawler, a crawler groove is provided on the active crawler wheel and the driven crawler wheel at the corresponding position of the crawler, the crawler can be plugged and matched with the crawler groove, the crawler is in a tensioned state when it is arranged on the active crawler wheel and the driven crawler wheel, a plurality of rake tooth fixing devices are arranged on the crawler, the rake tooth fixing device can fix the rake tooth to the top central position in the detection box and connect one end of an electric push rod, a high-strength and high-hardness pressing plate is arranged at the other end of the electric push rod, the length and width of the pressing plate are the same as the length and width of the inside of the detection box, and an irregular-sized grinding material layer is arranged between the pressing plate and the bottom of the detection box. The present invention can realize the performance detection of the rake teeth, so as to detect whether the corresponding rake tooth performance meets the standard.

Description

Technical Field

[0001] The invention belongs to the field of rake tooth performance detection for road screen cleaning machines, in particular to a rake tooth structure performance detection device for railway screen cleaning machines. Background Art

[0002] The cleaning machine is a common machine for ballast cleaning and maintenance in railways. Since the ballast will become compacted during long-term daily use, it will not be permeable and the shock absorption effect will be poor. Therefore, it is necessary to regularly perform cleaning and backfilling operations on the ballast to break the compaction, so as to ensure the water permeability and shock absorption effect of the ballast bed. Most of the current cleaning machines use multiple rake teeth fixed on the chain or crawler, and the power device drives the chain or crawler to rotate under the sleepers, so as to drive the rake teeth to contact the compacted ballast. The ballast cleaning machine will break the compacted ballast and take out the broken ballast for cleaning and then backfill, thus completing the ballast cleaning operation. During the operation of the cleaning machine, the rake teeth continuously hit the roadbed, which breaks the ballast. The rake teeth must not only withstand the impact of the ballast, but also the friction of the ballast. Therefore, the working conditions of the rake teeth are very harsh. In order to ensure the service life of the rake teeth, the rake teeth must have good comprehensive mechanical properties such as hardness and wear resistance. At present, there is a device that can detect the performance of the rake teeth. Summary of the invention

[0003] The invention provides a rake tooth structure performance detection device for a railway screening machine, which is used to solve the defects in the prior art.

[0004] The present invention is achieved through the following technical solutions:

[0005] A rake tooth structure performance detection device for a railway screening machine comprises a detection box, a vertically arranged annular crawler is arranged in the detection box, a driving crawler wheel and a driven crawler wheel are respectively arranged at both ends of the crawler, and a crawler groove is provided on the driving crawler wheel and the driven crawler wheel at positions corresponding to the crawler, and the crawler can be plugged and matched with the crawler groove, and the crawler is in a tensioned state when it is arranged on the driving crawler wheel and the driven crawler wheel, and a plurality of rake tooth fixing devices are arranged on the crawler, and the rake tooth fixing devices can fix the rake teeth, and the central position of the bottom of the driving crawler wheel is fixedly connected to the top end of the first rotating rod, and the bottom end of the first rotating rod passes through the bottom of the detection box and is connected to the output shaft of the motor through a flange, and the first A first bearing is arranged between the rotating rod and the bottom of the detection box, the inner ring of the first bearing is fixedly connected to the first rotating rod, the outer ring of the first bearing is fixedly connected to the bottom of the detection box, the motor is arranged in the equipment cavity below the detection box, the bottom center position of the driven track wheel is fixedly connected to the top of the second rotating rod, the bottom end of the second rotating rod is fixedly connected to the inner ring of the second bearing, the outer ring of the second bearing is fixedly connected to the detection box, one end of the electric push rod is connected to the top center position of the detection box, a high-strength and high-hardness pressing plate is arranged at the other end of the electric push rod, the length and width of the pressing plate are the same as the length and width of the inside of the detection box, and an irregular-sized grinding material layer is arranged between the pressing plate and the bottom of the detection box.

[0006] As described above, a rake tooth structure performance detection device for a railway screening machine, the detection box includes an inner box body and an outer box body, the inner box body is opened at the top, the outer box body is opened at the bottom, a handle is arranged on the top of the outer box body, an electric push rod and a pressure plate are arranged on the top of the outer box body, and the length and width of the pressure plate are the same as the length and width of the inner box body.

[0007] In the above-mentioned rake tooth structure performance detection device for a railway screening machine, bosses are correspondingly arranged at the bottom of the inner box and the outer box, and frame-shaped electromagnets are arranged on the bosses. The electromagnets can magnetically cooperate with the bottom of the outer box made of steel.

[0008] As described above, in a rake tooth structure performance detection device for a railway screening machine, the rake tooth fixing device includes a fixing sleeve arranged on the track, the rear end of the rake tooth can be plugged into and matched with the fixing sleeve, and the rear end of the rake tooth can be plugged into and matched with the fixing sleeve and then fixedly connected by bolts.

[0009] In the above-mentioned rake tooth structure performance detection device for railway screening machine, the bottom of the detection box is connected to the grinding material outlet pipe, and the grinding material outlet pipe is provided with a solenoid valve and a wear-resistant pump.

[0010] In the above-mentioned rake tooth structure performance detection device for a railway screening machine, the connection end between the grinding material outlet pipe and the detection box is funnel-shaped.

[0011] The advantages of the present invention are as follows: the present invention drives the active track wheel to rotate through a motor to drive the track and the rake teeth fixed by the rake tooth fixing device to rotate, so that the rake teeth touch the grinding material in the grinding material layer to generate friction, and at the same time the grinding material layer is compacted by the pressure plate to simulate the effect of ballast compaction. At the same time, the hardness of the existing grinding material is much higher than that of the ballast. At the same time, the friction force generated between the grinding material and the rake teeth during the movement is also higher than the friction force given by the ballast to the rake teeth when the ballast is screened. Therefore, the performance detection of the rake teeth can be realized, so as to detect whether the corresponding rake tooth performance meets the standard. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0013] Figure 1 It is a schematic diagram of the structure of the present invention;

[0014] Figure 2 yes Figure 1 A partial enlarged view of part I;

[0015] Figure 3 yes Figure 1 A partial enlarged view of Part II.

[0016] Figure numerals: 1. detection box; 2. crawler track; 3. active crawler wheel; 4. driven crawler wheel; 5. crawler groove; 6. rake teeth; 7. first rotating rod; 8. motor; 9. motor; 10. first bearing; 11. equipment cavity; 12. second rotating rod; 13. second bearing; 14. electric push rod; 15. pressure plate; 16. grinding material layer; 17. inner box; 18. outer box; 19. handle; 20. boss; 21. electromagnet; 22. fixing sleeve; 23. bolt; 24. grinding material outlet pipe; 25. solenoid valve; 26. wear-resistant pump. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] A rake tooth structure performance detection device for a railway screening machine comprises a detection box 1, wherein a vertically arranged annular crawler 2 is arranged in the detection box 1, and a driving crawler wheel 3 and a driven crawler wheel 4 are respectively arranged at both ends of the crawler 2, and a crawler groove 5 is provided on the driving crawler wheel 3 and the driven crawler wheel 4 at positions corresponding to the crawler 2, and the crawler 2 can be plugged and matched with the crawler groove 5, and the crawler 2 is in a tensioned state when the driving crawler wheel 3 and the driven crawler wheel 4 are arranged on the crawler 2, and a plurality of rake tooth fixing devices are arranged on the crawler 2, and the rake tooth fixing devices can fix the rake teeth 6, and the central position of the bottom of the driving crawler wheel 3 is fixedly connected to the top of the first rotating rod 7, and the bottom end of the first rotating rod 7 passes through the bottom of the detection box 1 and is connected to the output shaft of the motor 8 through a flange 9, and a first bearing 10 is arranged between the first rotating rod 7 and the bottom of the detection box 1, and the inner ring of the first bearing 10 is fixedly connected to the first rotating rod 7, and the first bearing 1 0 is fixedly connected to the bottom of the detection box 1, the motor 8 is arranged in the equipment cavity 11 below the detection box 1, the bottom center position of the driven track wheel 4 is fixedly connected to the top of the second rotating rod 12, the bottom end of the second rotating rod 12 is fixedly connected to the inner ring of the second bearing 13, the outer ring of the second bearing 13 is fixedly connected to the detection box 1, the top center position of the detection box 1 is connected to one end of the electric push rod 14, and the other end of the electric push rod 14 is provided with a high-strength and high-hardness pressing plate 15, the length and width of the pressing plate 15 are the same as the length and width of the inside of the detection box 1, and an irregular-sized grinding material layer 16 is arranged between the pressing plate 15 and the bottom of the detection box 1. In the present invention, the detection box 1, the crawler 2, the active track wheel 3, the driven track wheel 4, the first rotating rod 7, the first bearing 10, the second rotating rod 12, the second bearing 13, and the pressing plate 15 are all made of high-strength and high-wear-resistant materials, so they can ensure relatively long-term use. When the present invention is in use, the motor 8 drives the first rotating rod 7 to rotate, thereby driving the active crawler wheel 3, thereby driving the crawler 2 and the rake teeth 6 fixed by the rake tooth fixing device to rotate, and at the same time, the electric push rod 14 drives the pressure plate 15 to move downward to compact the grinding material layer 16, and at the same time, the size of the pressure applied by the electric push rod 14 is selected according to the conditions to be detected. At this time, due to the compaction of the grinding material layer 16, the effect of ballast compaction can be simulated. At the same time, the hardness of the existing grinding material is much higher than that of the ballast. At the same time, the friction force generated by the grinding material and the rake teeth 6 during the movement process is also higher than the friction force given to the rake teeth 6 by the ballast during the screening operation of the ballast. Then, after running to the specified time, the wear of the rake teeth 6 is observed to determine whether the performance of the rake teeth 6 meets the standard; at the same time, the crawler 2 used in the detection can also be the same material as the crawler in actual use, and the rake tooth fixing device can also be the rake tooth fixing device in actual use, so as to detect the actual performance of multiple components.

[0019] Specifically, since the rake teeth 6 are not convenient to be taken out and installed from the detection box 1, and are not convenient to use, in order to overcome the above problems, the detection box 1 described in this embodiment includes an inner box body 17 and an outer box body 18, wherein the inner box body 17 is provided with an opening at the top, and the outer box body 18 is provided with an opening at the bottom, and a handle 19 is provided at the top of the outer box body 18, and an electric push rod 14 and a pressing plate 15 are provided at the top of the outer box body 18, and the length and width of the pressing plate 15 are the same as those of the inner box body 17. The outer box body 18 can be conveniently taken off from the inner box body 17, and then the grinding material layer 16 therein is partially taken out until all the rake teeth 6 can be leaked out, and then the rake teeth 6 are taken out, and the degree of wear is observed, and then new rake teeth 6 to be tested are installed, and then the part of the grinding material layer 16 taken out is backfilled, so that the rake teeth 6 can be conveniently taken out and installed from the detection box 1, and are convenient to use.

[0020] Specifically, the inner box 17 and the outer box 18 described in this embodiment are provided with bosses 20 correspondingly at their bottoms, and the bosses 20 are provided with frame-shaped electromagnets 21, and the electromagnets 21 can be magnetically matched with the bottom of the outer box 18 made of steel. The magnetic matching of the electromagnets 21 with the bottom of the outer box 18 made of steel and steel can increase the stability of the plug-in matching between the outer box 18 and the inner box 17 during use, thereby ensuring that the detection is carried out normally.

[0021] Furthermore, the rake tooth fixing device described in this embodiment includes a fixing sleeve 22 disposed on the crawler 2, and the rear end of the rake tooth 6 can be plugged and matched with the fixing sleeve 22, and the rear end of the rake tooth 6 can be plugged and matched with the fixing sleeve 22 and fixedly connected by bolts 23. Since the rake teeth 6 are conventionally fixed by pins or bolts, the bolts 23 are used in the present invention to fix the rake teeth 6 and the fixing sleeve 22, which can better restore the installation state of the rake teeth 6 during normal use, thereby ensuring the accuracy of the detection results.

[0022] Furthermore, since the grinding material may be broken during high-intensity testing, the friction force decreases when it contacts with the grinding material, thus affecting the test results. However, the efficiency of direct manual removal is low. In order to overcome the above problems, the bottom of the test box 1 described in this embodiment is connected to the grinding material outlet pipe 24, and the grinding material outlet pipe 24 is provided with a solenoid valve 25 and a wear-resistant pump 26. The grinding material outlet pipe 24, the solenoid valve 25 and the wear-resistant pump 26 are all made of high-strength and high-wear-resistant materials. When the grinding material layer 16 needs to be replaced, the solenoid valve 25 and the wear-resistant pump 26 are opened, and the grinding material layer 16 is completely extracted by the drive of the wear-resistant pump 26, and then the solenoid valve 25 and the wear-resistant pump 26 are closed to add a new wear-resistant material layer 16, thereby conveniently replacing the grinding material layer 16 and effectively improving the efficiency.

[0023] Furthermore, the connection end of the grinding material outlet pipe 24 and the detection box 1 described in this embodiment is funnel-shaped. The funnel-shaped grinding material outlet pipe 24 is more convenient for material discharge, thereby indirectly improving the material discharge efficiency.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rake tooth structure performance detection device for a railway screen cleaning machine, characterized in that: The invention comprises a detection box (1), wherein a vertically arranged annular crawler (2) is arranged in the detection box (1), and a driving crawler wheel (3) and a driven crawler wheel (4) are arranged at both ends of the crawler (2), and a crawler groove (5) is provided on the driving crawler wheel (3) and the driven crawler wheel (4) at positions corresponding to the crawler (2), and the crawler (2) can be plugged into and matched with the crawler groove (5), and the crawler (2) is in a tensioned state when it is arranged on the driving crawler wheel (3) and the driven crawler wheel (4), and a plurality of rake tooth fixing devices are arranged on the crawler (2), and the rake tooth fixing devices can fix the rake teeth (6), and the central position of the bottom of the driving crawler wheel (3) is fixedly connected to the top of a first rotating rod (7), and the bottom end of the first rotating rod (7) passes through the bottom of the detection box (1) and is connected to the output shaft of the motor (8) through a flange (9), and a rotating rod (7) is arranged between the first rotating rod (7) and the bottom of the detection box (1). A first bearing (10), wherein the inner ring of the first bearing (10) is fixedly connected to the first rotating rod (7), the outer ring of the first bearing (10) is fixedly connected to the bottom of the detection box (1), the motor (8) is arranged in the equipment cavity (11) below the detection box (1), the bottom center position of the driven track wheel (4) is fixedly connected to the top of the second rotating rod (12), the bottom end of the second rotating rod (12) is fixedly connected to the inner ring of the second bearing (13), the outer ring of the second bearing (13) is fixedly connected to the detection box (1), one end of the electric push rod (14) is connected to the top center position of the detection box (1), and a high-strength and high-hardness pressing plate (15) is arranged at the other end of the electric push rod (14), the length and width of the pressing plate (15) are the same as the length and width of the inside of the detection box (1), and an irregular-sized grinding material layer (16) is arranged between the pressing plate (15) and the bottom of the detection box (1); The detection box (1) comprises an inner box body (17) and an outer box body (18), wherein the inner box body (17) is provided with an opening at the top, and the outer box body (18) is provided with an opening at the bottom, a handle (19) is provided at the top of the outer box body (18), and an electric push rod (14) and a pressing plate (15) are provided at the top of the outer box body (18), and the length and width of the pressing plate (15) are the same as the inner length and width of the inner box body (17); The inner box (17) and the outer box (18) are provided with bosses (20) at their bottoms, respectively. A frame-shaped electromagnet (21) is provided on the bosses (20). The electromagnet (21) can be magnetically matched with the bottom of the outer box (18) made of steel. The rake tooth fixing device comprises a fixing sleeve (22) arranged on the crawler (2), the rear end of the rake tooth (6) can be plugged into and matched with the fixing sleeve (22), and the rear end of the rake tooth (6) can be plugged into and matched with the fixing sleeve (22) and fixedly connected by bolts (23); The bottom of the detection box (1) is connected to the grinding material outlet pipe (24), and the grinding material outlet pipe (24) is provided with a solenoid valve (25) and a wear-resistant pump (26); The connection end between the grinding material outlet pipe (24) and the detection box (1) is funnel-shaped; The motor (8) drives the first rotating rod (7) to rotate, thereby driving the active crawler wheel (3), thereby driving the crawler (2) and the rake teeth (6) fixed by the rake tooth fixing device to rotate, and at the same time, the electric push rod (14) drives the pressure plate (15) to move downward to compact the grinding material layer (16), and at the same time, the size of the pressure applied by the electric push rod (14) is selected according to the conditions to be tested.

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