CN114061885B - Linear driving device - Google Patents
Linear driving device Download PDFInfo
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- CN114061885B CN114061885B CN202111368160.8A CN202111368160A CN114061885B CN 114061885 B CN114061885 B CN 114061885B CN 202111368160 A CN202111368160 A CN 202111368160A CN 114061885 B CN114061885 B CN 114061885B
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- 238000009434 installation Methods 0.000 abstract description 12
- 241001669679 Eleotris Species 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 description 11
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/08—Railway vehicles
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Abstract
The application relates to the technical field of railway vehicle collision energy absorption tests, in particular to a linear driving device. The linear driving device comprises a linear motor primary, a position adjusting assembly, a mounting table component and a clamping assembly; the mounting table member is arranged on a mounting plane between the two sleepers, and two ends of the mounting table member in the width direction are respectively clamped and connected with the two rails through the clamping assemblies; the linear motor primary is movably connected to the mounting table member through a position adjusting assembly, and the position adjusting assembly can adjust the position of the linear motor primary relative to the mounting table member so that the linear motor primary moves to a preset position with a preset induction gap formed by an induction plate on the test vehicle. The linear driving device does not damage the sleeper and the track during installation, is convenient for carrying out high-precision and batch adjustment on the primary position of the linear motor, is convenient for properly accommodating the primary position of the linear motor, and prolongs the service life of the primary position of the linear motor.
Description
Technical Field
The application relates to the technical field of railway vehicle collision energy absorption tests, in particular to a linear driving device.
Background
Along with the rapid development of rail traffic and the improvement of running speed, the rail traffic has become the preferred traffic tool for people to go out at present, and the running safety problem of rail traffic is always a focus of attention, so that the design and verification of rail vehicle collision are required.
The collision test is the most direct means for verifying the collision energy absorption system of the railway vehicle, and the collision test involves the control of the collision speed precision by using a linear motor.
The basic requirement for installing the linear motor is that the rail and the sleeper cannot be damaged by drilling or the like, and for this reason, a conventional structure for connecting the linear motor to the rail is generally to clamp the lower edges of the left and right rails respectively with clamps, and then connect the clamps on the left and right rails by tie rods.
The structure can only be used for keeping the left and right rail inspection tools, the linear motor is installed on the pull rod, the position and the height of the linear motor cannot be adjusted, the position precision and the height precision of the linear motor cannot be ensured after the linear motor is installed, and the uniformity of the installation precision of a plurality of linear motors cannot be ensured after the linear motors are installed in batches.
Disclosure of Invention
The utility model provides an aim at provides a linear drive device to solve the technical problem that exists in the prior art in carrying out collision test in-process to the test car, linear electric motor's mounted position is unadjustable and the installation accuracy is lower to a certain extent.
The application provides a linear driving device which is used for driving or braking a test car on a track assembly, wherein the track assembly comprises a plurality of sleepers and two tracks, the sleepers are arranged side by side at intervals along the length direction of the track assembly, and the two tracks are arranged at two ends of the track along the width direction of the track assembly;
the linear driving device comprises a linear motor primary, a position adjusting assembly, a mounting table component and a clamping assembly;
the mounting table member is arranged on a mounting plane between the two sleepers, and two ends of the mounting table member in the width direction are respectively clamped and connected with the two rails through the clamping assemblies;
the linear motor primary is movably connected to the mounting table member through the position adjusting assembly, and the position adjusting assembly can adjust the position of the linear motor primary relative to the mounting table member, so that the linear motor primary moves to a preset position with a preset induction gap formed by an induction plate on the test vehicle.
In the above technical solution, further, the mounting table member includes a connecting portion and a platform portion;
the platform part is in a flat plate shape and is used for being attached to the mounting plane, and the position adjusting assembly is arranged on the top surface of the platform part;
the two ends of the width direction of the platform part are respectively connected with the connecting parts, the connecting parts extend upwards relative to the platform part, and the clamping assembly is arranged on the connecting parts.
In any of the above technical solutions, further, the position adjusting assembly includes a posture adjusting mechanism and a lifting adjusting mechanism;
the gesture adjusting mechanism is arranged on the mounting table component through the lifting adjusting mechanism;
the two ends of the lifting adjusting mechanism in the height direction can be relatively close to or far away from each other so as to drive the gesture adjusting mechanism and the linear motor primary to lift relative to the mounting table component.
In any one of the above technical solutions, further, the lifting adjustment mechanism includes a top plate, a bottom plate, a telescopic support member, and a lifting driving member;
the bottom plate set up in the mount table component, the roof interval set up in the top of bottom plate, but telescopic support component's the both ends of direction of height can be relative flexible and respectively with the roof with the bottom plate is connected, lift drive component can drive the roof for the bottom plate goes up and down.
In any one of the above solutions, further, the lifting driving member includes a worm, a worm wheel, and a third rotation driving member;
the top end of the worm is connected with the top plate, the bottom end of the worm movably penetrates through the bottom plate, and the worm wheel is meshed with the worm;
the third rotation driving component is connected with the worm wheel and can drive the worm wheel to rotate so that the worm wheel drives the worm to drive the top plate to lift;
the telescopic supporting members are lifting hinges, and two ends of the top plate are connected with two ends of the bottom plate in one-to-one correspondence through the lifting hinges.
In any of the above technical solutions, further, the posture adjustment mechanism includes a fixed base, a first movable seat, and a second movable seat;
the fixed base is arranged on the top plate, the first movable seat is pivoted to the fixed base around a first pivot axis, the second movable seat is pivoted to the first movable seat around a second pivot axis, and the first pivot axis and the second pivot axis are arranged in a crossing manner and are positioned in the same plane parallel to the track plane.
In any one of the above solutions, further, the posture adjustment mechanism further includes a first rotation driving member connected to the first movable seat to drive the first movable seat to rotate about the first pivot axis;
the attitude adjusting mechanism further comprises a second rotation driving member connected with the second movable seat to drive the second movable seat to rotate around the second pivot axis.
In any of the above solutions, further, the position adjustment assembly further includes a rotation connection mechanism, where the rotation connection mechanism includes a first rotation portion and a second rotation portion;
the first rotating part is connected with the first movable seat so as to enable the first rotating part to synchronously rotate along with the first movable seat;
the second rotating part is supported at the bottom of the primary of the linear motor, the second rotating part is pivoted to the first rotating part around a third pivot axis, the second rotating part is connected with the second movable seat, and the third pivot axis is parallel to the second pivot axis, so that the second rotating part synchronously rotates along with the second movable seat.
In any of the above solutions, further, the second rotating portion is located above the first rotating portion, and rolling contact is formed between a top surface of the first rotating portion and a bottom surface of the second rotating portion.
In any one of the above technical solutions, further, the first movable seat is annular, the first rotating portion is disposed inside the first movable seat, and a bottom of the first rotating portion is in rolling contact with the top plate;
the second movable seat is an arch with an avoidance hole formed in the top, two ends of the arch are respectively pivoted with the first movable seat, and the second rotating part is arranged in the avoidance hole and is connected with the wall of the avoidance hole.
Compared with the prior art, the beneficial effects of this application are:
the linear driving device comprises a linear motor primary, a position adjusting assembly, a mounting table component and a clamping assembly. The mounting table component is used for being arranged on a track plane between two sleepers, two ends of the width direction of the mounting table component are respectively clamped and connected with two tracks through the clamping components, so that the linear driving device can be mounted on the premise of not damaging the structures of the sleepers and the tracks, and the mounting table component and the linear motor can be supported very stably on the primary side through the track plane, and the accumulation of mounting errors can be avoided.
The linear motor primary is movably connected to the mounting table component through the position adjusting component, the position adjusting component can adjust the position of the linear motor primary relative to the mounting table component, so that the linear motor primary moves to a preset position with a preset induction gap formed by an induction plate on the test vehicle, when the test vehicle needs to be subjected to collision test, the linear motor primary moves to the preset position, the position accuracy of the linear motor primary in a use state is improved, and in addition, when the collision test is not needed, the linear motor primary moves away from the preset position, so that the storage of the linear motor primary is realized, other tests on the test vehicle are not affected, and accidental collision damage of the linear motor primary can be avoided.
That is, the linear driving device is installed on the premise that the structures of the sleeper and the rail are not damaged, the positions of the primary linear motors are conveniently adjusted with high precision in batches, in addition, the primary linear motors are conveniently and properly stored, and the service life of the primary linear motors is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a first schematic structural diagram of a linear driving device according to an embodiment of the present application;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
fig. 3 is a second schematic structural diagram of the linear driving device according to the embodiment of the present application;
FIG. 4 is a partial enlarged view of FIG. 3 at B;
fig. 5 is a third schematic structural view of the linear driving device according to the embodiment of the present application (omitting a track assembly);
fig. 6 is a fourth schematic structural diagram of the linear driving device according to the embodiment of the present application;
fig. 7 is a schematic structural diagram of a rotary connection mechanism of a linear driving device according to an embodiment of the present disclosure;
fig. 8 is a schematic structural diagram of a lifting adjustment mechanism of a linear driving device according to an embodiment of the present application.
Reference numerals:
1-a linear drive device; 10-primary of a linear motor; 11-a position adjustment assembly; 110-a lifting adjusting mechanism; 1100-top plate; 1101-floor; 1102-lifting a winch; 1103-worm; 1104-a third rotational drive member; 111-a posture adjustment mechanism; 1110-fixing the base; 1111—a first movable seat; 1112-a second movable seat; 1113-an escape aperture; 1114—a first rotary drive member; 1115-a second rotational drive member; 112-a rotational connection; 1120—a first rotation part; 1121-a second rotating portion; 1122-a third pivot axis; 113-a housing; 114-mounting a flange base; 12-a mounting table member; 120-a platform part; 121-a connection; 13-a clamping assembly; 130-a fixing part; 131-a first clamping portion; 132-a second clamping portion; 133-a compacting member; 2-track assembly; 20-track; 200-track bottom edge; 21-sleeper.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
Referring to fig. 1 to 8, an embodiment of the present application provides a linear driving device 1 for driving or braking a test vehicle, particularly a test vehicle for a crash test, on a track assembly 2, and in particular, the speed of the test vehicle can be adjusted by the linear driving device 1 so that the test vehicle is maintained at a predetermined running speed during a test run.
The track assembly 2 includes a plurality of sleepers 21 and two tracks 20, wherein the sleepers 21 are arranged at intervals side by side along the length direction of the track assembly 2, the two tracks 20 are arranged at two ends of the track 20 along the width direction of the track assembly 2, and the length direction of the two tracks 20 is consistent with the length direction of the track assembly 2.
The linear driving device 1 provided in the embodiment of the present application includes a linear motor primary 10, a position adjusting assembly 11, a mount member 12, and a clamping assembly 13.
Hereinafter, the above-described components of the linear driving apparatus 1 will be specifically described.
In an alternative scheme of this embodiment, the linear motor primary 10 and the induction plate form a linear motor module together, the linear motor module is a key component for driving or braking the test vehicle, the linear motor primary 10 is disposed on the track assembly 2, the induction plate is disposed at the bottom of the test vehicle, and under the condition that the linear motor primary 10 is opposite to the induction plate, when the distance between the linear motor primary 10 and the induction plate is within the range of a predetermined induction gap, the linear motor primary 10 can provide power (driving force or braking force) for the test vehicle provided with the induction plate through electromagnetic induction.
In an alternative of this embodiment, the mounting table member 12 is provided on a mounting plane between two sleepers 21, that is, a plane for placing the sleepers 21, and both ends of the mounting table member 12 in the width direction are respectively clamped and connected with the two rails 20 by the clamping assemblies 13.
On the one hand, since the accuracy of the mounting plane of the rail assembly 2 for test is high, the mount table member 12 can be stably supported by the mounting plane, and no accumulated error is generated due to the mounting accuracy of the mounting plane to the linear motor primary 10.
On the other hand, since the installation plane is located below the plane of the track 20, the plane of the track 20 refers to the plane determined by the upper surfaces of the two tracks 20 together, so that a natural and idle concave space is formed between the two sleepers 21 and the installation plane, and therefore, the installation of the linear motor primary 10 can be completed through the installation platform member 12 on the basis of not affecting the inherent structure of the track 20 without additionally providing an installation position for the installation platform member 12, and the utilization rate of the idle space between the two tracks 20 is improved.
The linear motor primary 10 is movably connected to the mounting table member 12 through a position adjusting assembly 11, and the position adjusting assembly 11 can adjust the position of the linear motor primary 10 relative to the mounting table member 12 so that the linear motor primary 10 moves to a predetermined position where a predetermined induction gap is formed between the linear motor primary 10 and an induction plate on the test car, specifically, the linear motor primary 10 and the induction plate of the test car in the height direction of the track assembly 2.
Optionally, the predetermined inductive gap has a size of 2-4mm.
That is, the position adjusting assembly 11 can adjust the linear motor primary 10 to a predetermined position in which the linear motor primary 10 forms a predetermined induction gap with the induction plate at the bottom of the test car before the test car is tested, so that the linear motor primary 10 can supply power to the test car when the test car is operated to face the linear motor primary 10.
In contrast, after the test vehicle is tested, the position adjusting assembly 11 adjusts the linear motor primary 10 to the original position to be stored, and in the original position, since the distance between the test vehicle and the linear motor primary 10 is not within the range of the predetermined induction gap, when the test vehicle runs to face the linear motor primary 10, the linear motor primary 10 cannot provide power for the test vehicle, so that interference is not generated to other tests which do not need to provide power for the test vehicle by the linear motor primary 10, and meanwhile, collision damage is not caused in a non-working state due to improper storage of the linear motor primary 10.
In this embodiment, the clamping assembly 13 includes a clamping member and a pressing member 133, the clamping member includes a fixing portion 130, a first clamping portion 131 and a second clamping portion 132, the fixing portion 130 is welded or fastened to the mounting table member 12, the first clamping portion 131 and the second clamping portion 132 are connected to the fixing portion 130 in a duckbill shape, the first clamping portion 131 extends into the lower portion of the rail bottom edge 200 and is pressed between the lower surface of the rail bottom edge 200 and the mounting plane, and the second clamping portion 132 is pressed on the upper surface of the rail bottom edge 200 by the pressing member 133.
Optionally, the compression member 133 includes a washer and a compression bolt.
Alternatively, the first clamping portion 131, the second clamping portion 132 and the fixing portion 130 are all thick plate-shaped and are integrally formed. Further, the materials of the first clamping portion 131, the second clamping portion 132 and the fixing portion 130 are all metal.
Optionally, in order to protect the rail bottom edge 200, scratch-proof gaskets are provided between the first clamping portion 131 and the lower surface of the rail bottom edge 200 and between the second clamping portion 132 and the upper surface of the rail bottom edge 200.
In an alternative to this embodiment, the mounting table member 12 includes a connecting portion 121 and a platform portion 120.
The platform portion 120 is used for being used for the flat plate-shaped that laminates mutually with the mounting plane, and position adjustment subassembly 11 sets up in the top surface of platform portion 120, because flat plate-shaped platform portion 120 is high with track 20 plane laminating degree to be favorable to improving the installation accuracy of position adjustment subassembly 11 and linear electric motor elementary 10, and then reduce the regulation degree of difficulty to the position of linear electric motor elementary 10.
The connecting portions 121 are respectively connected to two ends of the platform portion 120 in the width direction, the connecting portions 121 extend upwards relative to the platform portion 120, and the clamping assemblies 13 are arranged on the connecting portions 121, wherein the connecting portions 121 are folded upwards relative to the end portions of the platform portion 120, so that usable space for connection between the clamping assemblies 13 and the mounting table members 12 is enlarged, and connection convenience between the clamping assemblies is improved.
In addition, the connecting part 121 supports the clamping assembly 13, so that the installation height of the clamping assembly 13 is matched with the height of the rail bottom edge 200, and the clamping reliability is improved.
Alternatively, the longitudinal section of the connecting portion 121 is L-shaped, wherein the longitudinal section is a section perpendicular to the length direction of the rail 20, a first side of the L-shape stands on the platform portion 120, a second side of the L-shape extends from the platform portion 120 toward the rail 20, and the fixing portion 130 of the clamping assembly 13 is connected to the second side of the L-shape.
Alternatively, the connection portion 121 is a channel steel integrally formed with the platform portion 120.
In an alternative to this embodiment, the position adjustment assembly 11 includes a posture adjustment mechanism 111 and a lift adjustment mechanism 110.
The posture adjustment mechanism 111 is provided to the mount member 12 through the lift adjustment mechanism 110, that is, the lift adjustment mechanism 110 is provided to the mount member 12, and the posture adjustment mechanism 111 is provided to the lift adjustment mechanism 110, specifically, the lift adjustment mechanism 110 is provided to the platform portion 120 of the mount member 12.
Optionally, the position adjusting assembly 11 further includes a housing 113 and a mounting flange base 114, the gesture adjusting mechanism 111 and the lifting adjusting mechanism 110 are both disposed in the housing 113, and the top of the housing 113 is open, so that the gesture adjusting mechanism 111 is connected with the linear motor primary 10 through the opening, and the bottom of the housing 113 is disposed on the mounting flange base 114, so that the housing 113 is fastened and connected with the platform 120 through the mounting flange base 114, thereby improving the connection stability and reliability between the position adjusting assembly 11 and the platform 120.
The height direction both ends of the elevation adjustment mechanism 110 can be relatively moved closer to or farther from each other to drive the posture adjustment mechanism 111 and the linear motor primary 10 to elevate with respect to the mount member 12. Specifically, the elevation adjustment mechanism 110 can drive the linear motor primary 10 to rise from the home position to the predetermined position, or drive the linear motor primary 10 to descend from the predetermined position to the home position. That is, the elevation adjustment mechanism 110 can perform highly accurate adjustment of the height of the linear motor primary 10.
In addition, since the primary linear motor 10 is in a flat plate shape, the parallelism between the sensing plate and the flat plate-shaped primary linear motor 10 affects the output torque of the linear motor module, and when the sensing plate is parallel to the primary linear motor 10, the output torque of the linear motor module is maximum.
Since the induction plate is disposed parallel to the plane of the rail 20, the parallelism between the flat linear motor primary 10 and the plane of the rail 20 affects the output torque of the linear motor primary 10, so that the posture of the linear motor primary 10 is adjusted by the posture adjustment mechanism 111 to adjust and maintain the linear motor primary 10 in a posture parallel to the plane of the rail 20 in order to ensure that the linear motor module can output the maximum torque.
In this embodiment, the lift adjustment mechanism 110 includes a top plate 1100, a bottom plate 1101, a telescoping support member, and a lift drive member.
The bottom plate 1101 is provided on the mount member 12, specifically, the bottom plate 1101 is fitted and fixedly connected to the bottom of the housing 113 to ensure that the bottom end of the lift adjustment mechanism 110 is kept stable.
The top plate 1100 is disposed at the top of the bottom plate 1101 at intervals, two ends of the telescopic supporting member in the height direction can be telescopic relatively and are connected with the top plate 1100 and the bottom plate 1101 respectively, that is, the telescopic supporting member can be telescopic supported between the top plate 1100 and the bottom plate 1101, and the driving member can drive the top plate 1100 to lift relatively to the bottom plate 1101.
Thus, when the lifting driving member drives the top plate 1100 to lift or descend, the telescopic supporting member is stretched or compressed, and in this process, the telescopic supporting member is supported between the top plate 1100 and the bottom plate 1101 at all times, so as to share the load of the lifting driving member, and improve the lifting stability of the top plate 1100, that is, the lifting stability of the primary 10 of the linear motor. In addition, when the lift drive member is stationary, the load can be borne by both the lift drive member and the rope supporting member, and the linear motor primary 10 can be held at a predetermined position, an original position, or the like with high accuracy.
In this embodiment, the elevation drive member includes a worm 1103, a worm wheel, and a third rotation drive member 1104.
The top of the worm 1103 is connected with the top plate 1100, the bottom of the worm 1103 is movably arranged on the bottom plate 1101 in a penetrating way, the worm wheel is meshed with the worm 1103, and the third rotation driving member 1104 is connected with the worm wheel and can drive the worm wheel to rotate, so that the worm wheel drives the worm 1103 to drive the top plate 1100 to lift. The third driving member may be mounted on the bottom plate 1101, the worm wheel is disposed on the bottom plate 1101 through a worm wheel frame, the bottom plate 1101 is provided with a through hole for the bottom end of the worm 1103 to reciprocate, and the top end of the worm 1103 is fixedly connected with the top plate 1100, so that when the third driving member drives the worm wheel to rotate, the worm 1103 meshed with the worm wheel ascends and descends in the through hole relative to the base, and drives the top plate 1100 to ascend and descend.
The telescopic supporting member is a lifting hinge frame 1102, the lifting hinge frame 1102 has strong supporting performance, two ends of the top plate 1100 are connected with two ends of the bottom plate 1101 in one-to-one correspondence through the lifting hinge frame 1102, and the top plate 1100 and the bottom plate 1101 are supported through the two lifting hinge frames 1102, so that the top plate 1100 is prevented from collapsing and tilting at one side, and the lifting stability of the top plate 1100 is further improved.
Alternatively, the lifting hinge 1102 is provided at both ends in the length direction or the width direction of the top plate 1100 and the bottom plate 1101.
Specifically, since the linear motor primary 10 and the posture adjustment mechanism are heavy, the load on the top plate 1100 is large, and the worm gear transmission structure and the lifting/lowering frame 1102 have strong supporting performance and stability, so that it is possible to ensure that the top plate 1100 can cope with such a large load.
In this embodiment, the posture adjustment mechanism 111 includes a fixed base 1110, a first movable base 1111, and a second movable base 1112.
The fixing base 1110 is provided on the top plate 1100, and thereby other components of the posture adjustment mechanism 111 and the linear motor primary 10 are stably supported by the fixing base 1110.
The first movable seat 1111 is pivotally connected to the fixed base 1110 about a first pivot axis such that the first movable seat 1111 can rotate about the first pivot axis relative to the fixed base 1110.
The second movable seat 1112 is pivotally connected to the first movable seat 1111 about a second pivot axis, and the first pivot axis intersects the second pivot axis and is located in the same plane parallel to the plane of the track 20, so that the second movable seat 1112 can rotate about the second pivot axis relative to the fixed base 1110 and the first movable seat 1111.
The linear motor primary 10 is disposed on the second movable seat 1112, so that the linear motor primary 10 can rotate around the first pivot axis along with the first movable seat 1111 relative to the fixed seat 1110, and can rotate around the second pivot axis along with the second movable seat 1112 relative to the fixed seat 1110, and further, by adjusting the position of the linear motor primary 10 around the first pivot axis and the position around the second pivot axis, the linear motor primary 10 can swing to be parallel to the plane of the track 20.
Alternatively, the first pivot axis is aligned with the length direction of the track assembly 2 and the second pivot axis is aligned with the width direction of the track assembly 2.
In this embodiment, the gesture adjusting mechanism further includes a first rotation driving member 1114, where the first rotation driving member 1114 is connected to the first movable seat 1111 to drive the first movable seat 1111 to rotate around the first pivot axis, so as to automatically adjust the position of the primary 10 of the linear motor around the first pivot axis, which is beneficial to saving manpower, improving batch adjustment efficiency, and improving adjustment accuracy.
The gesture adjusting mechanism further comprises a second rotation driving component 1115, and the second rotation driving component 1115 is connected with the second movable seat 1112 to drive the second movable seat 1112 to rotate around the second pivot axis, so that automatic adjustment of the position of the primary 10 of the linear motor around the second pivot axis is achieved, labor saving is facilitated, batch adjustment efficiency is improved, and adjustment accuracy is facilitated to be improved.
Alternatively, the first rotary drive member 1114, the second rotary drive member 1115, and the third rotary drive member 1104 are all rotary motors.
Optionally, the first rotary drive member 1114 and the second rotary drive member 1115 are integrated into a dual-shaft power take off module, further having a laser sensor and an encoder for a fixed value to improve the accuracy of adjustment.
Optionally, depth cameras are provided on the inner sides of both rails 20, so that the position of the plane of the rails 20 is determined by the set of depth cameras to provide a basis for adjusting the posture of the linear motor primary 10 by the first rotary driving member 1114 and the second rotary driving member 1115.
In this embodiment, the position adjustment assembly further includes a rotational connection mechanism 112, and the rotational connection mechanism 112 includes a first rotational portion 1120 and a second rotational portion 1121.
The first rotating part 1120 is connected with the first movable seat 1111 such that the first rotating part 1120 rotates synchronously with the first movable seat 1111; the second rotating portion 1121 is supported at the bottom of the primary linear motor 10, the second rotating portion 1121 is pivotally connected to the first rotating portion 1120 about a third pivot axis, the second rotating portion 1121 is connected to the second movable seat 1112, and the third pivot axis is parallel to the second pivot axis, so that the second rotating portion 1121 rotates synchronously with the second movable seat 1112.
Thus, the fixed base 1110 and the linear motor primary 10 realize transmission through two parallel transmission paths, wherein the first transmission path is the fixed base 1110, the first movable base and the second movable base to the linear motor primary 10, the second transmission path is the fixed base 1110, the first rotating part 1120 and the second rotating part 1121 to the linear motor primary 10, the power of the first rotating driving member 1114 is applied to the first movable base, the power of the second rotating driving member 1115 is applied to the second movable base, so that the first rotating part 1120 and the second rotating part 1121 move along with the first movable base and the second movable base, that is, the first transmission path provides power for the second transmission path, the second transmission path provides support for the first transmission path, and the two transmission paths cooperate to ensure that the linear motor primary 10 can swing stably and with high precision, and the adjustment precision error generated in the transmission process is reduced.
Alternatively, the first rotating portion 1120 and the second rotating portion 1121 are pivoted by a third pivot shaft 1122, and an axis of the third pivot shaft 1122 coincides with the third pivot axis.
In the present embodiment, the second rotating portion 1121 is located above the first rotating portion 1120, and rolling contact is formed between the top surface of the first rotating portion 1120 and the bottom surface of the second rotating portion 1121, specifically, by "rolling contact" is meant a case where at least one of the first rotating portion 1120 and the second rotating portion 1121 is formed with an arc-shaped contact surface or a spherical contact surface or the like so that relative rolling of the two about the third pivot axis can occur.
In this embodiment, the first movable seat 1111 is annular, and the first rotating portion 1120 is disposed inside the first movable seat 1111, that is, the first rotating portion 1120 is embedded in the first movable seat 1111, so that the installation space can be effectively saved, and the lifting adjustment stroke and the gesture adjustment range of the linear motor primary 10 can be increased.
The bottom of the first rotating part 1120 is in rolling contact with the top plate 1100, so that the top plate 1100 supports the first rotating part 1120 to improve the upper limit and stability of the rotation connection member by contacting the two, and the first rotating part 1120 rotates about the first pivot axis with the top plate 1100 as a support by rolling contact, so that the rotation of the first rotating part 1120 and the first movable seat 1111 is smoother.
Here, the "rolling contact" refers to a case where at least one of the bottom of the first rotating portion 1120 and the top plate 1100 is formed with a surface that enables relative rolling of the two about the fourth pivot axis, such as an arc-shaped contact surface or a spherical contact surface, and the fourth pivot axis is parallel to the first pivot axis.
In order to secure stable support of the top plate 1100, the top surface of the top plate 1100 may be provided as a plane except for a position where it contacts the first rotating portion 1120.
The second movable seat 1112 is in an arch shape, and the arch structure has a strong bearing performance, so that the second rotating portion 1121 supports the linear motor primary 10 more stably and reliably.
Both ends of the arch are pivotally connected to the first movable seat 1111, such that the second movable seat 1112 can rotate about the second pivot axis relative to the first movable seat 1111.
The top of the arched second movable seat 1112 is provided with an avoidance hole 1113, and the second rotating portion 1121 is disposed in the avoidance hole 1113 and connected with the hole wall of the avoidance hole 1113, so that the second rotating portion 1121 can synchronously rotate around the third pivot axis along with the second movable seat 1112.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention. Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, any of the claimed embodiments can be used in any combination. The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Claims (6)
1. The linear driving device is characterized by being used for driving or braking a test car on a track assembly, wherein the track assembly comprises a plurality of sleepers and two tracks, the sleepers are arranged side by side at intervals along the length direction of the track assembly, and the two tracks are arranged at two ends of the track along the width direction of the track assembly;
the linear driving device comprises a linear motor primary, a position adjusting assembly, a mounting table component and a clamping assembly;
the mounting table member is arranged on a mounting plane between the two sleepers, and two ends of the mounting table member in the width direction are respectively clamped and connected with the two rails through the clamping assemblies;
the linear motor primary is movably connected to the mounting table member through the position adjusting assembly, and the position adjusting assembly can adjust the position of the linear motor primary relative to the mounting table member so as to enable the linear motor primary to move to a preset position with a preset induction gap formed by an induction plate on the test vehicle;
the mounting table member includes a connecting portion and a platform portion;
the platform part is in a flat plate shape and is used for being attached to the mounting plane, and the position adjusting assembly is arranged on the top surface of the platform part;
the two ends of the width direction of the platform part are respectively connected with the connecting parts, the connecting parts extend upwards relative to the platform part, and the clamping assembly is arranged on the connecting parts;
the position adjusting assembly comprises a gesture adjusting mechanism and a lifting adjusting mechanism;
the gesture adjusting mechanism is arranged on the mounting table component through the lifting adjusting mechanism;
the two ends of the lifting adjusting mechanism in the height direction can be relatively close to or far away from each other so as to drive the gesture adjusting mechanism and the linear motor primary to lift relative to the mounting table member;
the lifting adjusting mechanism comprises a top plate, a bottom plate, a telescopic supporting member and a lifting driving member;
the bottom plate is arranged on the mounting table member, the top plates are arranged at the top of the bottom plate at intervals, two ends of the telescopic supporting member in the height direction can be telescopic relatively and are respectively connected with the top plate and the bottom plate, and the lifting driving member can drive the top plate to lift relative to the bottom plate; the gesture adjusting mechanism comprises a fixed base, a first movable seat and a second movable seat;
the fixed base is arranged on the top plate, the first movable seat is pivoted on the fixed base around a first pivot axis, the second movable seat is pivoted on the first movable seat around a second pivot axis, and the first pivot axis and the second pivot axis are arranged in a crossing way and are positioned in the same plane parallel to the track plane;
the induction plate is arranged parallel to the track plane, the parallelism between the flat linear motor primary and the track plane influences the output torque of the linear motor primary, and in order to ensure that the linear motor module can output the maximum torque, the posture of the linear motor primary is regulated by the posture regulating mechanism so as to ensure that the linear motor primary is regulated to be kept in a posture parallel to the track plane.
2. The linear driving apparatus according to claim 1, wherein the elevation driving member includes a worm, a worm wheel, and a third rotation driving member;
the top end of the worm is connected with the top plate, the bottom end of the worm movably penetrates through the bottom plate, and the worm wheel is meshed with the worm;
the third rotation driving component is connected with the worm wheel and can drive the worm wheel to rotate so that the worm wheel drives the worm to drive the top plate to lift;
the telescopic supporting members are lifting hinges, and two ends of the top plate are connected with two ends of the bottom plate in one-to-one correspondence through the lifting hinges.
3. The linear driving apparatus according to claim 1, wherein the posture adjustment mechanism further includes a first rotation driving member connected to the first movable seat to drive the first movable seat to rotate about the first pivot axis;
the attitude adjusting mechanism further comprises a second rotation driving member connected with the second movable seat to drive the second movable seat to rotate around the second pivot axis.
4. The linear drive of claim 3, wherein the position adjustment assembly further comprises a rotational coupling mechanism comprising a first rotational portion and a second rotational portion;
the first rotating part is connected with the first movable seat so as to enable the first rotating part to synchronously rotate along with the first movable seat;
the second rotating part is supported at the bottom of the primary of the linear motor, the second rotating part is pivoted to the first rotating part around a third pivot axis, the second rotating part is connected with the second movable seat, and the third pivot axis is parallel to the second pivot axis, so that the second rotating part synchronously rotates along with the second movable seat.
5. The linear driving apparatus according to claim 4, wherein the second rotating portion is located above the first rotating portion, and a rolling contact is formed between a top surface of the first rotating portion and a bottom surface of the second rotating portion.
6. The linear driving device according to claim 4, wherein the first movable seat is ring-shaped, the first rotating portion is disposed inside the first movable seat, and a bottom of the first rotating portion is in rolling contact with the top plate;
the second movable seat is an arch with an avoidance hole formed in the top, two ends of the arch are respectively pivoted with the first movable seat, and the second rotating part is arranged in the avoidance hole and is connected with the wall of the avoidance hole.
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| CN202111368160.8A CN114061885B (en) | 2021-11-18 | 2021-11-18 | Linear driving device |
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| CN202111368160.8A CN114061885B (en) | 2021-11-18 | 2021-11-18 | Linear driving device |
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