A pantograph-net contact simulation device for cantilever simulation test
By designing the bow net contact simulation device for wrist arm simulation test, and adjusting the simulated contact relationship using scale lines and pointers, the problem of inaccurate bow net contact simulation in the existing technology is solved, and high accuracy and convenient operation of wrist arm tests are achieved. Ensure that the wrist arm wears evenly during actual use and avoid breakage.
Patent Information
- Application Number
- CN202010760958.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-07-31
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2040-07-31
AI Technical Summary
The lack of a bow mesh contact simulation device with high accuracy and easy operation in the prior art makes it difficult to accurately evaluate the contact relationship between the pantograph and the contact line in the wrist arm simulation test, which may cause the wrist arm to fail to meet the design needs in actual use. .
A bow net contact simulation device for wrist arm simulation test is designed, including simulated pantograph and simulated contact line. The scale line and pointer are set on the simulated pantograph. The pointer is in contact with the scale line and can be removed from the simulated contact line. Connection, simulates the contact state of the bow net by adjusting the pointer position and connection relationship, and uses the scale lines and connection units to achieve precise control.
By simply and quickly adjusting the pointer position and connection relationship, the contact status of the bow net can be simulated with high accuracy, ensuring that the wrist arm meets the design requirements during the test and avoiding fracture problems caused by local wear during actual use.
Smart Images
Figure CN111798716B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of cantilever production, in particular to a bow-net contact simulation device for cantilever simulation test. Background Art
[0002] In the traction power supply system, the arm is an important part of the contact network. The arm is usually installed on the upper part of the pillar to support the contact suspension and transfer the load. The arm is generally made of round steel pipe, and its length is related to the structural height of the contact suspension, the side limit of the pillar, and the position of the pillar. When the arm is in use, the positioner is used to connect the contact line. The contact line supplies power to the locomotive by contacting the pantograph on the locomotive. When the locomotive is running at high speed, the pantograph will rub against the contact line violently, causing the pantograph to wear quickly. In order to avoid the contact line from contacting one position of the pantograph for a long time and causing the pantograph to break, the direction of the positioner is currently controlled to make the two adjacent positioners face opposite directions, so that the contact line is wavy. In this way, the contact line will contact all positions of the pantograph, so that the wear degree of each position of the pantograph is uniform, avoiding local excessive wear and breakage. The distance that the contact position between the contact wire and the pantograph deviates from the pantograph centerline is called the pull-out value. The arm can only be put into use normally when the contact position between the contact wire and the pantograph meets the pull-out value requirements allowed by the design. Otherwise, the contact wire may not be in contact with the pantograph. In order to avoid discovering this situation after the arm is installed, it is necessary to conduct a simulation test before the arm is put into use. When it is found that the arm cannot meet the use requirements, it is necessary to make corrections in time. In the arm simulation test, the focus is on simulating the contact relationship between the pantograph and the contact wire, that is, simulating the pantograph-net contact relationship. The prior art still lacks a pantograph-net contact simulation device that is highly accurate and easy to operate. Summary of the invention
[0003] In order to solve the deficiencies in the prior art, the present invention provides a bow-net contact simulation device for a wrist-arm simulation test, which can simulate the bow-net contact relationship with high precision and is simple and fast.
[0004] In order to achieve the above-mentioned purpose, the specific scheme adopted by the present invention is: a bow-net contact simulation device for arm simulation test, including a simulated pantograph and a simulated contact line, the simulated pantograph is provided with scale lines, the simulated pantograph is slidably connected with a pointer, the pointer is in contact with the scale lines and is detachably connected to the simulated contact line.
[0005] As a further optimization of the above-mentioned bow-net contact simulation device for the arm simulation test: the simulated pantograph includes two parallel monomers, two first connecting rods are fixedly connected between the two monomers, a second connecting rod is fixedly connected between the two first connecting rods, and the second connecting rod and the monomer are parallel to each other, the scale line is arranged on the monomer, the second connecting rod is slidably connected to a connecting unit, the pointer is fixedly connected to the connecting unit, and the pointer and the monomer are perpendicular to each other.
[0006] As a further optimization of the bow-net contact simulation device for the above-mentioned arm-cantilever simulation test: the connecting unit includes a connecting seat, a through hole for passing the second connecting rod is provided on the connecting seat, and a receiving groove for accommodating the pointer is provided on the top of the connecting seat. The pointer is arranged in the receiving groove and is fixedly connected to the connecting seat by at least one connecting bolt.
[0007] As a further optimization of the bow-net contact simulation device for the above-mentioned arm-cantilever simulation test: the pointer includes a main body, and a groove for accommodating the simulated contact line is provided on the main body.
[0008] As a further optimization of the bow-net contact simulation device for the above-mentioned arm-cantilever simulation test: the groove is set as a V-shaped groove, and the width of the groove is greater than the diameter of the simulated contact line.
[0009] As a further optimization of the bow-net contact simulation device for the above-mentioned arm-cantilever simulation test: the main body is fixedly connected with at least one boss, and a transverse detection surface is arranged on the boss, and the transverse detection surface is parallel to the bottom of the groove.
[0010] As a further optimization of the bow-net contact simulation device for the above-mentioned arm-cantilever simulation test: the main body is rod-shaped, the length of the main body is greater than the length of the boss, and the main body is fixedly connected with at least one tip.
[0011] As a further optimization of the bow-net contact simulation device for the above-mentioned arm-cantilever simulation test: a longitudinal detection surface is arranged on the tip.
[0012] Beneficial effects: The present invention can simulate the contact state of the bow-net only by adjusting the position of the pointer and the connection relationship between the pointer and the simulated contact line, which is simple, fast and highly accurate. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention;
[0014] Figure 2 It is a schematic diagram of the structure of the pointer and the connection unit A;
[0015] Figure 3 It is a schematic diagram of the structure of the pointer and the connection unit B;
[0016] Figure 4 It is the main view of the pointer and connection unit;
[0017] Figure 5 It is a schematic diagram of the connection method between the pointer and the simulated contact line.
[0018] Description of the drawings: 1-simulated pantograph, 2-scale line, 3-first connecting rod, 4-second connecting rod, 5-locator, 6-pointer, 7-connecting unit, 8-groove, 9-screw hole, 10-connecting seat, 11-through hole, 12-body, 13-boss, 14-tip, 15-longitudinal detection surface, 16-gap, 17-transverse detection surface, 18-connecting bolt, 19-clamp, 20-simulated contact line. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.
[0020] See also Figures 1 to 5 A bow-net contact simulation device for arm simulation test includes a simulated pantograph 1 and a simulated contact line 20. The simulated pantograph 1 is provided with a scale line 2. The simulated pantograph 1 is slidably connected with a pointer 6. The pointer 6 contacts the scale line 2 and is detachably connected to the simulated contact line 20.
[0021] In the wrist arm simulation test, after the wrist arm is installed, the simulated contact line 20 is fixedly connected to the wrist arm locator 5, and then the posture of the simulated pantograph 1 is adjusted according to the test requirements, and then the position of the pointer 6 is adjusted according to the pull-out value requirement of the wrist arm. The position of the pointer 6 can be accurately controlled with the help of the scale line 2, and finally the simulated contact line 20 is tried to be connected with the pointer 6. If the simulated contact line 20 can be smoothly connected with the pointer 6, it means that the performance of the wrist arm of the current test meets the design requirements. If the simulated contact line 20 cannot be smoothly connected with the pointer 6, it means that the performance of the wrist arm of the current test cannot meet the design requirements and needs to be corrected. In addition, the position of the simulated contact line 20 can be determined first, and then the pointer 6 is connected to the simulated contact line 20, and then the pull-out value of the wrist arm of the current test is read through the scale line 2. If it is within the allowable range, it means that the performance of the wrist arm of the current test meets the design requirements, otherwise it means that the performance of the wrist arm of the current test cannot meet the design requirements. It should be noted that the simulated contact wire 20 can be a short straight section cut from the contact wire in actual application, and the corresponding connection method between the positioner 5 and the simulated contact wire 20 can also be the same as that of the actual contact wire, that is, the positioner 5 clamps the simulated contact wire 20 through the wire clamp 19.
[0022] The present invention can simulate the contact state of the bow-catenary only by adjusting the position of the pointer 6 and the connection relationship between the pointer 6 and the simulated contact line 20, which is simple, fast and highly accurate.
[0023] In order to simulate the contact relationship between the bow and the network more accurately, the structure and size of the simulated pantograph 1 are the same as those of the pantograph used in actual application. Specifically, the simulated pantograph 1 includes two parallel arched monomers, two first connecting rods 3 are fixedly connected between the two monomers, a second connecting rod 4 is fixedly connected between the two first connecting rods 3, and the second connecting rod 4 is parallel to the monomer. On this basis, the scale line 2 is set on the monomer and is located on the back side of the monomer, the second connecting rod 4 is slidably connected to the connecting unit 7, the pointer 6 is fixedly connected to the connecting unit 7, and the pointer 6 is perpendicular to the monomer. Slidingly connecting the pointer 6 with the second connecting rod 4 can avoid setting a connecting piece between the pointer 6 and the monomer, thereby avoiding the connecting piece from blocking the scale line 2, and then the position of the pointer 6 can be determined or the pull-out value can be read conveniently and accurately through the scale line 2.
[0024] The specific structure of the connection unit 7 is as follows: the connection unit 7 includes a connection seat 10, a through hole 11 for passing the second connection rod 4 is formed on the connection seat 10, a receiving groove for receiving the pointer 6 is formed on the top of the connection seat 10, and the receiving groove is a through groove, and the pointer 6 is arranged in the receiving groove and fixedly connected to the connection seat 10 by at least one connecting bolt 18. Correspondingly, a screw hole 9 for passing the connecting bolt 18 is formed at the bottom of the receiving groove, and the connecting bolt 18 is completely immersed in the screw hole 9 after installation to avoid interference with the pointer 6.
[0025] The detachable connection mode of the pointer 6 and the simulated contact wire 20 is as follows: the pointer 6 comprises a body 12, and a groove 8 for accommodating the simulated contact wire 20 is provided on the body 12. That is, the simulated contact wire 20 and the pointer 6 are connected by plugging, which is simple and fast.
[0026] Because the posture of the simulated pantograph 1 needs to be adjusted during the simulation process, when the posture of the simulated pantograph 1 changes, the posture of the pointer 6 will be changed. In order to ensure that the simulated contact wire 20 can still be smoothly placed in the groove 8 after the posture of the pointer 6 changes, the groove 8 is set as a V-shaped groove, and the width of the groove 8 is greater than the diameter of the simulated contact wire 20. In order to ensure the accuracy of the read pull-out value, the bottom of the groove 8 is set to an arc. Assuming that the simulated pantograph 1 is set horizontally before adjustment, after the simulated contact wire 20 is placed in the groove 8, the lowest point of the end face of the simulated contact wire 20 from the end of the simulated contact wire 20 contacts the groove 8, and this point is coplanar with the back of the simulated pantograph 1, that is, coplanar with the scale line 2. When the posture of the simulated pantograph 1 changes, this point is always in contact with the groove 8 and always coplanar with the scale line 2, thereby ensuring the stability of the contact state between the simulated contact wire 20 and the pointer 6, and then ensuring the accuracy of the pull-out value.
[0027] The pull-out value can be directly read through the scale line 2, but manual intervention is still required. In order to ensure that the test process can be carried out stably without being interrupted by manual factors, the body 12 is fixedly connected with at least one boss 13, and a transverse detection surface 17 is provided on the boss 13. The transverse detection surface 17 is parallel to the bottom of the groove 8. The transverse detection surface 17 can be detected from the bottom of the simulated pantograph 1 by a laser rangefinder or other device to obtain the distance to the transverse detection surface 17, and then the position of the pointer 6 is calculated according to the current posture of the simulated pantograph 1, and then the pull-out value is obtained.
[0028] The specific configuration of the boss 13 is as follows: the body 12 is rod-shaped, the length of the body 12 is greater than the length of the boss 13, and the body 12 is fixedly connected with at least one tip 14. Because the length of the body 12 is greater than the length of the boss 13, the boss 13 can be located between the two monomers when the body 12 contacts the simulated pantograph 1, thereby ensuring that the body 12 can be completely fitted with the simulated pantograph 1 to improve the accuracy of reading the pull-out value, and the tip 13 is used to further improve the accuracy of reading the pull-out value. On this basis, a clearance gap 16 is formed between the boss 13 and the tip 14 to facilitate assembly and sliding of the pointer 6.
[0029] Furthermore, a longitudinal detection surface 15 is provided on the tip 14. The longitudinal detection surface 15 can be measured by a laser rangefinder or other equipment to obtain the position of the pointer 6, and then the pull-out value is calculated in combination with the posture of the simulated pantograph 1.
[0030] In this embodiment, the body 12 may be cylindrical, and the boss 13 , the tip 14 , the longitudinal detection surface 15 , the clearance notch 16 and the transverse detection surface 17 may be directly processed on the body 12 .
[0031] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A pantograph-catwalk contact simulation device for cantilever simulation test, Features: The device comprises a simulated pantograph (1) and a simulated contact line (20), wherein the simulated pantograph (1) is provided with a scale line (2), the simulated pantograph (1) is slidably connected to a pointer (6), the pointer (6) is in contact with the scale line (2) and is detachably connected to the simulated contact line (20); The simulated pantograph (1) comprises two parallel monomers, two first connecting rods (3) are fixedly connected between the two monomers, a second connecting rod (4) is fixedly connected between the two first connecting rods (3), and the second connecting rod (4) and the monomer are parallel to each other, the scale line (2) is arranged on the monomer, the second connecting rod (4) is slidably connected to a connecting unit (7), the pointer (6) is fixedly connected to the connecting unit (7), and the pointer (6) and the monomer are perpendicular to each other; The pointer (6) comprises a body (12), and a groove (8) for accommodating the simulated contact line (20) is provided on the body (12).
2. A pantograph-net contact simulation device for a cantilever simulation test as claimed in claim 1, Features: The connecting unit (7) comprises a connecting seat (10), the connecting seat (10) being provided with a through hole (11) for passing the second connecting rod (4), and the top of the connecting seat (10) being provided with a receiving groove for receiving the pointer (6), the pointer (6) being arranged in the receiving groove and fixedly connected to the connecting seat (10) by at least one connecting bolt (18).
3. A bow-net contact simulation device for a cantilever simulation test as claimed in claim 1, Features: The groove (8) is configured as a V-shaped groove, and the width of the groove (8) is greater than the diameter of the simulated contact line (20).
4. A bow-net contact simulation device for a cantilever simulation test as claimed in claim 1, Features: The body (12) is fixedly connected to at least one boss (13), and a transverse detection surface (17) is provided on the boss (13), wherein the transverse detection surface (17) is parallel to the bottom of the groove (8).
5. A pantograph-net contact simulation device for a cantilever simulation test as claimed in claim 4, Features: The body (12) is rod-shaped, the length of the body (12) is greater than the length of the boss (13), and at least one tip (14) is fixedly connected to the body (12).
6. A pantograph-net contact simulation device for a cantilever simulation test as claimed in claim 5, Features: The tip (14) is provided with a longitudinal detection surface (15).