A wrist-arm simulation test device

Abstract

A wrist-arm simulation test device, comprising a simplified wrist-arm including a positioner, a pantograph, a posture adjustment mechanism for adjusting the pantograph's posture, and a pointer slidably connected to the pantograph, the pointer being detachably connected to the positioner. The present invention provides a wrist-arm simulation test device capable of quickly and easily performing simulation tests on the pullout values ​​of a simplified wrist-arm.

Description

Technical Field

[0001] The invention relates to the technical field of wrist arm production, in particular to a wrist arm simulation test device. Background Art

[0002] In the traction power supply system, the arm is a crucial component of the contact network. Typically mounted on the upper portion of a support column, it supports the contact suspension and transfers loads. The arm is typically made of circular steel pipe, and its length is dependent on factors such as the structural height of the contact suspension, the support column's lateral limits, and the column's location. When the arm is in use, a positioner connects the contact wire, which supplies power to the locomotive by contacting the pantograph on the locomotive. When the locomotive is traveling at high speeds, the pantograph and contact wire rub violently, causing rapid wear. To prevent the contact wire from contacting a single location on the pantograph for an extended period, potentially causing the pantograph to break, the current method is to control the direction of the positioner so that two adjacent positioners face opposite directions, creating a wavy contact line. This ensures that the contact wire contacts all locations on the pantograph, ensuring uniform wear across the pantograph and preventing localized breakage. The distance that the contact position between the contact wire and the pantograph deviates from the center line of the pantograph is called the pull-out value. The arm can be put into use normally only 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, a simulation test is required before the arm is put into use. When it is found that the arm cannot meet the use requirements, it must be corrected in time. The existing technology still lacks a device that can perform simulation tests on the arm simply and quickly. Summary of the Invention

[0003] In order to solve the deficiencies in the prior art, the present invention provides a wrist-arm simulation test device, which can simply and quickly perform a simulation test on the pull-out value of a simplified wrist-arm.

[0004] In order to achieve the above-mentioned purpose, the specific scheme adopted by the present invention is: a wrist-arm simulation test device, the simplified wrist-arm includes a locator, the device includes a pantograph, a posture adjustment mechanism for adjusting the posture of the pantograph, and a pointer slidably connected to the pantograph, and the pointer is detachably connected to the locator.

[0005] As a further optimization of the above-mentioned simplified wrist-arm simulation test device: the device includes a fixed support column and a bracket, the simplified wrist-arm is fixedly set on the support column, and a loading mechanism is set on the bracket, which is used to apply a load from top to bottom to the simplified wrist-arm.

[0006] As a further optimization of the above-mentioned simplified wrist-arm simulation test device: the loading mechanism includes a load point adjustment module fixedly connected to the bracket, the load point adjustment module is driven and connected to a loader, and the loader is located above the simplified wrist-arm.

[0007] As a further optimization of the above simplified cantilever simulation test device: the pantograph includes two bow-shaped monomers that are parallel to each other and fixedly connected, the upper surface of the bow-shaped monomer is provided with scale lines, and the pointer is in contact with the scale lines.

[0008] As a further optimization of the above-mentioned simplified wrist-arm simulation test device: two second connecting rods are fixedly connected between the two bow-shaped monomers, a first connecting rod is fixedly connected between the two second connecting rods, the first connecting rod and the bow-shaped monomers are parallel to each other, and the pointer is slidably connected to the first connecting rod.

[0009] As a further optimization of the above-mentioned simplified arm simulation test device: the posture adjustment mechanism includes a pantograph horizontal movement unit, the pantograph horizontal movement unit is driven and connected to the pantograph vertical lifting unit, the pantograph vertical lifting unit is driven and connected to the pantograph pitch adjustment unit, and the pantograph pitch adjustment unit is driven and connected to the pantograph.

[0010] As a further optimization of the above-mentioned simplified arm simulation test device: the pantograph horizontal movement unit includes a driver, the driver is fixedly connected to a movable seat, and the pantograph vertical lifting unit is fixedly set on the movable seat.

[0011] As a further optimization of the above-mentioned simplified arm simulation test device: the pantograph vertical lifting unit includes a shell fixedly set on the movable seat, and two oppositely arranged side walls of the shell are provided with vertically extending through slots. A lead screw is vertically arranged in the shell, and the lower end of the lead screw is fixedly connected to the lifting motor after extending out of the shell. A movable block is fitted on the lead screw, and the movable block is fixedly connected to two extension plates, which extend from the two through slots respectively. The two extension plates are jointly fixedly connected to a vertical mounting plate, and the bottom of the vertical mounting plate is fixedly connected to a horizontal mounting plate. The pantograph pitch adjustment unit is fixedly set on the horizontal mounting plate.

[0012] As a further optimization of the above-mentioned simplified arm simulation test device: the pantograph pitch adjustment unit includes two support plates vertically fixed on the upper surface of the horizontal mounting plate and a horizontal drive module fixedly connected to the lower surface of the horizontal support plate, a linkage rod is rotatably connected between the upper parts of the two support plates, and the linkage rod is fixedly connected to the two bow-shaped monomers, the horizontal drive module is drivably connected to a connecting block, the connecting block is fixedly connected to a vertically arranged connecting plate, the connecting plate is movably connected to a transmission rod, the transmission rod is rotatably connected to a swing arm, and the swing arm is fixedly connected to the linkage rod.

[0013] As a further optimization of the above-mentioned simplified wrist-arm simulation test device: the device includes a rangefinder horizontal movement module arranged below the simplified wrist-arm, the rangefinder horizontal movement module is driven and connected to a laser rangefinder, and the detection light of the laser rangefinder is vertically upward.

[0014] Beneficial effect: During the simulation test, the present invention only needs to adjust the posture of the pantograph and the position of the pointer, and then determine whether the locator can be successfully connected to the pointer. The simulation test process is simple and fast, and does not require complex numerical calculations and equipment control. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 It is a front view of the present invention;

[0017] Figure 3 is a top view of the present invention;

[0018] Figure 4 It is a structural diagram of the attitude adjustment mechanism;

[0019] Figure 5 It is the main view of the attitude adjustment mechanism;

[0020] Figure 6 It is a structural diagram of the pantograph vertical lifting unit.

[0021] Illustrations: 1-stairs, 2-operating platform, 3-support column, 4-bracket, 5-jib, 6-hook, 7-mounting rod, 8-radial limiter, 9-flat wrist arm, 10-locator, 11-base, 12-pantograph horizontal movement unit, 13-pantograph, 14-pointer, 15-pantograph vertical lifting unit, 16-pantograph pitch adjustment unit, 17-rangefinder horizontal movement module, 18-laser rangefinder, 19-load point adjustment Section module, 20-loader, 21-housing, 22-scale line, 23-lifting motor, 24-transmission rod, 25-swing arm, 26-mounting platform, 27-support plate, 28-linkage rod, 29-first connecting rod, 30-second connecting rod, 31-horizontal drive module, 32-connecting block, 33-connecting plate, 34-screw, 35-through slot, 36-extension plate, 37-vertical mounting plate, 38-movable block, 39-horizontal mounting plate. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0023] See also Figures 1 to 6 A wrist-arm simulation test device, a simplified wrist-arm includes a locator 10, the device includes a pantograph 13, a posture adjustment mechanism for adjusting the posture of the pantograph 13, and a pointer 14 slidingly connected to the pantograph 13, the pointer 14 is detachably connected to the locator 10.

[0024] During use, the posture adjustment mechanism is first used to adjust the posture of the pantograph 13 to simulate the various states that the pantograph 13 may experience during locomotive operation. Then, the pointer 14 is moved to the design-allowed pullout range. The position of the positioner 10 is then adjusted. If the positioner 10 successfully connects with the pointer 14, the simplified arm can control the contact wire pullout value within the design-allowed range during locomotive operation, indicating that the simplified arm is performing well. If the positioner 10 cannot successfully connect with the pointer 14, the simplified arm may cause the contact wire pullout value to exceed the design-allowed range during locomotive operation, causing rapid wear of the pantograph 13. This indicates that the simplified arm is defective and needs improvement. Alternatively, the position of the positioner 10 can be first determined, and then the pointer 14 can be moved until it can successfully connect with the positioner 10. The corresponding pullout value can then be determined based on the current position of the pointer 14 to determine whether it is within the design-allowed range.

[0025] During the simulation test, the present invention only needs to adjust the posture of the pantograph 13 and the position of the pointer 14, and then determine whether the positioner 10 can be successfully connected to the pointer 14. The simulation test process is simple and fast, and does not require complex numerical calculations and equipment control.

[0026] Considering the inherently heavy mass of the simplified arm and the significant tensile force exerted on it by the contact line after installation, to fully simulate the simplified arm's operational state, the device includes a fixed support column 3 and a bracket 4. The simplified arm is fixed to the support column 3, and the bracket 4 is provided with a loading mechanism for applying a top-down load to the simplified arm. The support column 3 simulates the support column of the actual simplified arm during installation. In actual practice, the support column is very high, causing the simplified arm to tilt slightly after installation. Therefore, in most cases, the initial tilt angle of the support column is controlled to ensure that the simplified arm can be adjusted to a vertical position after installation. The initial tilt angle of the support column will affect the pullout value of the simplified arm, but the effect is very small. Therefore, in the present invention, the initial tilt angle of the support column is ignored, and a lower support column 3 is used and fixed, effectively reducing the device's size and simplifying installation difficulty. On the other hand, in order to simulate the influence of the contact line on the simplified wrist arm, the present invention also provides a loading mechanism, which uses the loading mechanism to apply a load from top to bottom to the simplified wrist arm to simulate the tension of the contact line on the simplified wrist arm, thereby improving the accuracy of the simulation test results.

[0027] The loading mechanism comprises a load-point adjustment module 19 fixedly connected to the bracket 4. This module is operatively connected to a loader 20, which is located above the simplified wrist arm. The load-point adjustment module 19 is configured as a device capable of outputting linear thrust, such as a linear module or a ball screw linear drive mechanism. The loader 20 can be a common device such as a pneumatic cylinder.

[0028] To accurately determine the design's allowable pullout range and, by extension, the position of pointer 14, pantograph 13 comprises two parallel, fixedly connected arched units. Scale lines 22 are provided on the upper surfaces of these units, and pointer 14 contacts these lines. These lines 22 allow the pullout value corresponding to the current position of pointer 14 to be accurately read.

[0029] The specific configuration of pointer 14 is as follows: two second connecting rods 30 are fixedly connected between the two arcuate units, a first connecting rod 29 is fixedly connected between the two second connecting rods 30, the first connecting rod 29 is parallel to the arcuate units, and pointer 14 is slidably connected to the first connecting rod 29. Because the first connecting rod 29 is parallel to the arcuate units, the relative position of pointer 14 and the two arcuate units remains the same as it slides along the first connecting rod 29, allowing pointer 14 to accurately indicate the pull-out value.

[0030] When the locomotive is moving, the pantograph 13 will remain horizontal when traveling in a straight line on flat terrain. When traveling on undulating terrain, the height of the pantograph 13 will change. When turning, the locomotive body will tilt due to the influence of the track, which will cause the pantograph 13 to tilt as well. In order to simulate various posture changes of the pantograph 13, the posture adjustment mechanism includes a pantograph horizontal movement unit 12, which is driven by a pantograph vertical lifting unit 15, which is driven by a pantograph pitch adjustment unit 16, which is driven by the pantograph 13. The pantograph horizontal movement unit 12 is used to control the movement position of the pantograph 13 and the contact wire, the pantograph vertical lifting unit 15 is used to control the height of the pantograph 13, and the pantograph pitch adjustment unit 16 is used to control the inclination angle of the pantograph 13.

[0031] The pantograph horizontal movement unit 12 comprises a driver fixedly connected to a movable base, and a pantograph vertical lifting unit 15 fixedly mounted on the movable base. The driver can also be a device with a linear thrust output, such as a linear module. To control the direction of the movable base, a track can also be provided for the movable base.

[0032] The specific structure of the pantograph vertical lifting unit 15 is as follows: the pantograph vertical lifting unit 15 includes a shell 21 fixedly set on a movable seat, and vertically extending through slots 35 are opened on two oppositely arranged side walls of the shell 21. A lead screw 34 is vertically arranged in the shell 21, and the lower end of the lead screw 34 is fixedly connected to the lifting motor 23 after extending out of the shell 21. A movable block 38 is fitted on the lead screw 34, and the movable block 38 is fixedly connected to two extension plates 36. The two extension plates 36 extend from the two through slots 35 respectively, and the two extension plates 36 are jointly fixedly connected to a vertical mounting plate 37. The bottom of the vertical mounting plate 37 is fixedly connected to a horizontal mounting plate 39. The vertical mounting plate 37 and the horizontal mounting plate 39 together constitute a mounting platform 26, and the pantograph pitch adjustment unit 16 is fixedly set on the horizontal mounting plate 39. When the height of the pantograph 13 needs to be adjusted, the lifting motor 23 starts to drive the lead screw 34 to rotate. Since the lead screw 34 and the movable block 38 cooperate with each other, the lead screw 34 can drive the movable block 38 to move along the lead screw 34 during the rotation process, and then the movable block 38 drives the vertical mounting plate 37 to move up and down through the two extension plates 36. Finally, the vertical mounting plate 37 is used to drive the horizontal mounting plate 39 to move up and down, and the pantograph pitch adjustment unit 16 and the pantograph 13 are driven up and down through the horizontal mounting plate 39.

[0033] The specific structure of the pantograph pitch adjustment unit 16 is as follows: the pantograph pitch adjustment unit 16 includes two support plates 27 vertically fixed on the upper surface of the horizontal mounting plate 39 and a horizontal drive module 31 fixedly connected to the lower surface of the horizontal support plate 27. A linkage rod 28 is rotatably connected between the upper parts of the two support plates 27, and the linkage rod 28 is fixedly connected to both bow-shaped monomers. The horizontal drive module 31 is drivably connected to a connecting block 32, and the connecting block 32 is fixedly connected to a vertically arranged connecting plate 33. The connecting plate 33 is movably connected to a transmission rod 24, and the transmission rod 24 is rotatably connected to a swing arm 25, and the swing arm 25 is fixedly connected to the linkage rod 28. When the inclination angle of the pantograph 13 needs to be adjusted, the horizontal drive module 31 is actuated to push the connecting block 32 to move, and the connecting plate 33 is driven to move during the movement of the connecting block 32, and then the connecting plate 33 drives the transmission rod 24 to move, and the transmission rod 24 then pushes the swing arm 25 to swing. Because the swing arm 25 is fixedly connected to the linkage rod 28, the swing arm 25 can drive the linkage rod 28 to rotate during the swinging process, and then drive the two bow-shaped monomers to rotate through the linkage rod 28, thereby achieving the purpose of adjusting the inclination angle of the pantograph 13.

[0034] The specific cooperation between the transmission rod 24 and the connecting plate 33 is as follows: a U-shaped groove is opened on the connecting plate 33, and the transmission rod 24 is arranged in the U-shaped groove. The width of the U-shaped groove is equal to the diameter of the transmission rod 24 and the length of the U-shaped groove is greater than the diameter of the transmission rod 24. When the connecting plate 33 moves synchronously with the connecting block 32, the inner wall of the U-shaped groove generates a thrust on the transmission rod 24, thereby pushing the transmission rod 24 to move. Because the transmission rod 24 can move in the U-shaped groove, the connecting plate 33 moves in a straight line to push the transmission rod 24 to rotate around the linkage rod 28, and then the transmission rod 24 drives the swing arm 25 to swing.

[0035] To further improve the efficiency of the simulation test, the step of manually reading scale lines 22 can be omitted. To achieve this, the device includes a horizontal rangefinder module 17 located below the simplified wrist arm. This module is connected to a laser rangefinder 18, whose detection light is directed vertically upward. After the position of pointer 14 is determined, the laser rangefinder 18 measures the distance between the pointer 14 and the laser rangefinder 18, and then calculates the pullout value based on the current posture of the pantograph 13.

[0036] Considering the large weight of the simplified wrist arm itself, it is difficult to install the simplified wrist arm to the support column 3, and the efficiency of manual installation is also relatively low. Therefore, several hanging arms 15 can be set up, and the hanging arms 15 are driven and connected with hooks 16. The hooks 16 are used to hook the flat wrist arm 9 of the simplified wrist arm, and then the simplified wrist arm is lifted upward by the hanging arms 15, thereby greatly improving the installation speed.

[0037] To facilitate operation, a support 4 is provided on the side, on which an operating platform 2 is mounted. This platform 2 is connected to a staircase 1, allowing workers to ascend to the operating platform 2 via the staircase 1 and complete the installation of the simplified boom. The boom 15 can be fixed to the support 4, eliminating the need for additional support devices and simplifying the overall structure of the device.

[0038] After the simplified wrist arm is installed, the process of adjusting the positioner 10 may cause the simplified wrist arm to shake, thereby causing the accuracy of the simulation test results to decrease. In order to avoid the vibration of the simplified wrist arm, a mounting rod 8 is fixedly provided on the bracket 4, and a radial limiter 8 is provided on the mounting rod 8. The radial limiter 8 is plate-shaped, and a slot with an opening facing downward is provided on the radial limiter 8. The flat wrist arm 9 is arranged in the slot, and the width of the slot is equal to the diameter of the flat wrist arm 9, so that the radial limiter 8 can be used to limit the flat wrist arm 9, thereby achieving the effect of avoiding the shaking of the simplified wrist arm.

[0039] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily 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 is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wrist-arm simulation test device, a simplified wrist-arm including a positioner (10), characterized in that: The device comprises a pantograph (13), a posture adjustment mechanism for adjusting the posture of the pantograph (13), and a pointer (14) slidably connected to the pantograph (13), wherein the pointer (14) is detachably connected to the positioner (10); The pantograph (13) comprises two mutually parallel and fixedly connected bow-shaped monomers, the upper surface of the bow-shaped monomers being provided with scale lines (22), and the pointer (14) being in contact with the scale lines (22); two second connecting rods (30) being fixedly connected between the two bow-shaped monomers, a first connecting rod (29) being fixedly connected between the two second connecting rods (30), the first connecting rod (29) being parallel to the bow-shaped monomers, and the pointer (14) being slidably connected to the first connecting rod (29); The device comprises a fixed support column (3) and a bracket (4), the simplified wrist arm is fixedly arranged on the support column (3), and a loading mechanism is provided on the bracket (4), and the loading mechanism is used to apply a load from top to bottom to the simplified wrist arm; The loading mechanism includes a load point adjustment module (19) fixedly connected to the bracket (4), the load point adjustment module (19) is configured as a device capable of outputting a horizontal linear thrust, the load point adjustment module (19) is driven and connected to a loader (20), and the loader (20) is located above the simplified wrist arm; The attitude adjustment mechanism comprises a pantograph horizontal movement unit (12), the pantograph horizontal movement unit (12) is drive-connected to a pantograph vertical lifting unit (15), the pantograph vertical lifting unit (15) is drive-connected to a pantograph pitch adjustment unit (16), and the pantograph pitch adjustment unit (16) is drive-connected to the pantograph (13).

2. The arm-wrist simulation test device according to claim 1, characterized in that: The pantograph horizontal movement unit (12) comprises a driver, the driver is fixedly connected to a movable seat, and the pantograph vertical lifting unit (15) is fixedly arranged on the movable seat.

3. The arm-wrist simulation test device according to claim 2, characterized in that: The pantograph vertical lifting unit (15) includes a housing (21) fixedly arranged on the movable seat, two oppositely arranged side walls of the housing (21) are provided with vertically extending through slots (35), a lead screw (34) is vertically arranged in the housing (21), the lower end of the lead screw (34) extends out of the housing (21) and is fixedly connected to the lifting motor (23), a movable block (38) is provided on the lead screw (34), and the movable block (38) is fixedly connected to two extension plates (36), the two extension plates (36) respectively extend from the two through slots (35), the two extension plates (36) are fixedly connected to a vertical mounting plate (37), the bottom of the vertical mounting plate (37) is fixedly connected to a horizontal mounting plate (39), and the pantograph pitch adjustment unit (16) is fixedly arranged on the horizontal mounting plate (39).

4. The arm-arm simulation test device according to claim 3, characterized in that: The pantograph pitch adjustment unit (16) comprises two support plates (27) vertically fixed on the upper surface of the horizontal mounting plate (39) and a horizontal drive module (31) fixedly connected to the lower surface of the support plate (27); a linkage rod (28) is rotatably connected between the upper portions of the two support plates (27), and the linkage rod (28) is fixedly connected to both of the two bow-shaped monomers; the horizontal drive module (31) is drivably connected to a connection block (32); the connection block (32) is fixedly connected to a vertically arranged connection plate (33); the connection plate (33) is movably connected to a transmission rod (24); the transmission rod (24) is rotatably connected to a swing arm (25); and the swing arm (25) is fixedly connected to the linkage rod (28).

5. The arm-arm simulation test device according to claim 1, characterized in that: The device comprises a rangefinder horizontal movement module (17) arranged below the simplified wrist arm, the rangefinder horizontal movement module (17) is driven and connected to a laser rangefinder (18), and the detection light of the laser rangefinder (18) is vertically upward.

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