Large-stroke high-stability movable vibration exciter lifting device

Abstract

The invention discloses a large-stroke high-stability movable vibration exciter lifting device, which relates to the technical field of vibration exciters, and comprises a lifting stand column supporting assembly, a lifting bracket assembly, a lifter assembly and two linear guide rails, and the linear guide rails and the lifter assembly are arranged on the lifting stand column supporting assembly. The two linear guide rails are arranged on the two sides of the lifter assembly respectively, the lifter assembly drives the lifting bracket assembly to move, and the lifting bracket assembly is connected to the linear guide rails. According to the large-stroke high-stability movable vibration exciter lifting device, it is guaranteed that the position of the vibration exciter can be accurately adjusted, the stability of the workbench in the lifting process and the vibration excitation process is guaranteed, and vibration is prevented from interfering with the test result.

Description

Technical Field

[0001] The invention relates to the technical field of vibrators, and in particular to a large-stroke, high-stability, movable vibrator lifting device. Background Art

[0002] The rail vehicle anechoic laboratory is an experimental facility dedicated to the research, testing and optimization of the noise and vibration characteristics of rail vehicles. In the rail vehicle anechoic chamber, the electromagnetic exciter has become the preferred equipment for vibration excitation in the rail vehicle anechoic chamber due to its low noise, wide bandwidth and high-precision control. It can accurately simulate the complex vibrations in vehicle operation without interfering with the acoustic test environment, and provide reliable data support for the optimization of vehicle noise and vibration (NVH) performance. During the test, the position of the exciter needs to be changed to adapt to the test requirements of different models and different test parts.

[0003] However, the existing vibration exciter lifting equipment has the disadvantages of being difficult to adjust, having a narrow application range, and having poor stability. Therefore, it is particularly necessary to design a lifting device suitable for the electromagnetic vibration exciter lifting requirements in the anechoic chamber. Summary of the invention

[0004] The purpose of the present invention is to provide a large-stroke, high-stability, movable exciter lifting device to solve the problems of difficult adjustment, narrow application range and poor stability of existing exciter lifting equipment in a special environment such as an anechoic chamber.

[0005] To achieve the above-mentioned objectives, the present invention provides a large-stroke and highly stable movable exciter lifting device, comprising a lifting column support assembly, a lifting bracket assembly, an elevator assembly and two linear guide rails, wherein the linear guide rails and the elevator assembly are both arranged on the lifting column support assembly, and the two linear guide rails are respectively arranged on both sides of the elevator assembly, the elevator assembly drives the lifting bracket assembly to move, and the lifting bracket assembly is connected to the linear guide rails.

[0006] Preferably, the lifting column supporting assembly includes a column welding body, the bottom of the column welding body is connected to one end of a plurality of connecting tubes, the other ends of the plurality of connecting tubes are connected to a counterweight supporting tube, the counterweight supporting tube is connected to a supporting tube, the supporting tube is penetrated by a base screw, the top of the base screw is penetrated by a handle, the bottom of the base screw is connected to a supporting plate, and the connection between the base screw and the supporting tube is fixed by screws.

[0007] Preferably, two equilateral angle steels are symmetrically fixedly arranged on one side surface of the column welding body, and the equilateral angle steels are connected to the linear guide rail; A motor seat bottom plate is arranged above the two equilateral angle steels, and the motor seat bottom plate is fixedly arranged on the top end of the column welding body. A spherical bearing connecting plate is arranged below the two equilateral angle steels, and the spherical bearing connecting plate is arranged above the connection point of the two connecting pipes.

[0008] Preferably, the top ends of the other three side surfaces of the column welded body are fixedly connected with upper shaft earrings, and the other three side surfaces of the column welded body are provided with diagonal bracing trusses, the top ends of the diagonal bracing trusses are hingedly connected to the upper shaft earrings, the bottom ends of the diagonal bracing trusses are penetrated by the lower end shaft, both ends of the lower end shaft are connected to the lower bearing seat, and the lower bearing seat is connected to the counterweight support tube through a connecting plate.

[0009] Preferably, a box cover is provided on the top of the counterweight support tube, and a universal wheel is connected to the bottom of the counterweight support tube via a connecting fixing plate.

[0010] Preferably, the elevator assembly comprises a lead screw, a motor and a turbine, wherein a worm and a turbine are arranged in the turbine, the top end of the lead screw passes through the bottom plate of the motor seat and is fixedly connected to the turbine, the bottom end of the lead screw is connected to a spherical bearing, and the bearing seat of the spherical bearing is fixedly connected to the spherical bearing connecting plate; The turbine and the worm are meshingly connected, and the worm is fixedly connected to the output end of the motor.

[0011] Preferably, the lifting bracket assembly includes a lifting bracket and an electromagnetic exciter, the electromagnetic exciter is fixedly arranged on the lifting bracket by bolts, the lifting bracket includes a working platform welded body, two sets of bracket locking assemblies, a lead screw nut and four guide rail sliders, the four guide rail sliders are respectively connected to two linear guide rails in pairs, and the guide rail sliders are fixedly connected to the four corners of the working platform welded body through pads; The lead screw nut is sleeved and connected to the lead screw, and the lead screw nut is fixedly connected to the center position of the working platform welding body through a nut support.

[0012] Preferably, each group of the bracket locking assemblies includes an elastic locking steel plate, and the upper and lower ends of the elastic locking steel plate on the side close to the screw nut are respectively connected to a fixed base plate 1 and a fixed pressing plate, and the upper and lower ends of the elastic locking steel plate on the side away from the screw nut are respectively connected to a fixed base plate 2 and an elastic locking U-shaped groove clamping plate, and the elastic locking U-shaped groove clamping plate is clamped on the side of the equilateral angle steel, and a plurality of fastening bolts are arranged on the back of the elastic locking U-shaped groove clamping plate.

[0013] Therefore, the present invention adopts the above-mentioned large-stroke and high-stability movable exciter lifting device to ensure that the exciter can accurately adjust its position, ensure the stability of the workbench during the lifting and excitation process, and avoid vibration interference with the test results.

[0014] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of an embodiment of a large-stroke, high-stability, movable exciter lifting device of the present invention; Figure 2 It is a structural schematic diagram of a lifting column support assembly of a large-stroke, high-stability, movable exciter lifting device of the present invention; Figure 3 It is a structural schematic diagram of a support pipe of a large-stroke, high-stability movable exciter lifting device of the present invention; Figure 4 It is a structural schematic diagram of a universal wheel of a large-stroke, high-stability, movable exciter lifting device of the present invention; Figure 5 It is a rear view of a large-stroke, high-stability, movable exciter lifting device of the present invention; Figure 6 It is a structural schematic diagram of a lifting assembly of a large-stroke, high-stability, movable exciter lifting device of the present invention; Figure 7 It is a schematic diagram of the connection structure of the turbine and worm of a large-stroke, high-stability, movable exciter lifting device of the present invention; Figure 8 It is a structural schematic diagram of a lifting bracket assembly of a large-stroke, high-stability, movable exciter lifting device of the present invention; Fig. 9 It is a rear view of the welding body of the working platform of a movable exciter lifting device with a large stroke and high stability according to the present invention; Fig.10 It is a structural schematic diagram of a bracket locking assembly of a large-stroke, high-stability, movable exciter lifting device of the present invention; Fig.11 It is a structural schematic diagram of a lead screw nut of a large-stroke, high-stability, movable exciter lifting device of the present invention; Figure numerals: 1. lifting column support assembly; 11. column welding body; 12. connecting pipe; 13. counterweight support pipe; 131. box cover; 132. connecting fixing plate; 133. universal wheel; 14. supporting pipe; 141. base screw; 142. handle; 143. supporting plate; 144. screw; 15. equilateral angle steel; 16. motor base plate; 17. spherical bearing connecting plate; 18. upper shaft earring; 19. diagonal bracing truss; 191. lower end shaft; 192. lower bearing seat; 193. connecting plate; 2. lifting bracket assembly; 21. lifting bracket ; 211. Working platform welding body; 212. Bracket locking assembly; 2121. Elastic locking steel plate; 2122. Fixed base plate one; 2123. Fixed clamping plate; 2124. Fixed base plate two; 2125. Elastic locking U-shaped groove clamp; 2126. Fastening bolts; 213. Screw nut; 2131. Nut support; 214. Guide rail slider; 22. Electromagnetic exciter; 3. Lifting machine assembly; 31. Screw; 32. Motor; 33. Turbine; 331. Worm; 332. Turbine; 34. Spherical bearing; 4. Linear guide. DETAILED DESCRIPTION

[0016] The technical solution of the present invention is further described below through the accompanying drawings and embodiments.

[0017] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0018] Example See also Figure 1-11 The present invention provides a large-stroke and highly stable movable exciter lifting device, including a lifting column support assembly 1, a lifting bracket assembly 2, an elevator assembly 3 and two linear guide rails 4, the linear guide rails 4 and the elevator assembly 3 are both arranged on the lifting column support assembly 1, and the two linear guide rails 4 are respectively arranged on both sides of the elevator assembly 3, the elevator assembly 3 drives the lifting bracket assembly 2 to move, the lifting bracket assembly 2 is connected to the linear guide rails 4, and the linear guide rails 4 are fixed to the equilateral angle steel 15 by bolts.

[0019] The lifting column support assembly 1 includes a column welding body 11, the bottom of which is connected to one end of a plurality of connecting tubes 12, the other ends of which are all connected to a counterweight support tube 13, the counterweight support tube 13 is connected to a support tube 14, the support tube 14 is penetrated by a base screw 141, the top of the base screw 141 is penetrated by a handle 142, the bottom of the base screw 141 is connected to a support plate 143, and the connection between the base screw 141 and the support tube 14 is fixed by screws 144. When the lifting device is moved into place, push the handle 142 to drive the base screw 141 to rotate, lower the base to the ground and tighten the nut to fix the lifting device, and the workbench can be leveled with a spirit level. When the lifting device needs to be moved, loosen the bolts, push the handle 142 in the opposite direction, and lift the base off the ground.

[0020] Two equilateral angle steels 15 are symmetrically fixed on one side of the column welded body 11, and the equilateral angle steels 15 are connected to the linear guide rail 4. A motor base plate 16 is arranged above the two equilateral angle steels 15, and the motor base plate 16 is fixedly arranged at the top of the column welded body 11. A spherical bearing connecting plate 17 is arranged below the two equilateral angle steels 15, and the spherical bearing connecting plate 17 is arranged above the joint of the two connecting pipes 12.

[0021] The top of the other three side surfaces of the column welded body 11 is fixedly connected with the upper shaft earring 18, and the other three side surfaces of the column welded body 11 are all provided with a diagonal brace truss 19, the top of the diagonal brace truss 19 is hingedly connected to the upper shaft earring 18, the bottom end of the diagonal brace truss 19 is penetrated by the lower end shaft 191, both ends of the lower end shaft 191 are connected to the lower bearing seat 192, and the lower bearing seat 192 is connected to the counterweight support pipe 13 through the connecting plate 193. The function of the diagonal brace truss 19 is to improve the rigidity of the lifting device, enhance the stability of the lifting device during high-frequency vibration, avoid resonance, improve control accuracy, and extend the service life of the equipment.

[0022] The top of the counterweight support pipe 13 is provided with a box cover 131, and the bottom of the counterweight support pipe 13 is connected with a universal wheel 133 through a connecting fixing plate 132. The universal wheel 133 has a specific shock-absorbing effect, can be moved on the ground, and can be fixed by a shock absorber base during operation.

[0023] The elevator assembly 3 includes a lead screw 31, a motor 32 and a turbine 33. A worm 331 and a turbine 332 are arranged in the turbine 33. The top end of the lead screw 31 passes through the motor base plate 16 and is fixedly connected to the turbine 332. The bottom end of the lead screw 31 is connected to the spherical bearing 34. The bearing seat of the spherical bearing 34 is fixedly connected to the spherical bearing connecting plate 17. The turbine 332 is meshed with the worm 331, and the worm 331 is fixedly connected to the output end of the motor 32. The motor 32 and the turbine 33 are fixed to the motor base plate 16 by bolts. The output end of the motor 32 drives the worm 331 to rotate, and then drives the turbine 332 to rotate, drives the lead screw 31 to rotate, so that the lead screw nut 213 moves on the lead screw 31, and the lead screw nut 213 is raised or lowered on the lead screw 31 through the forward and reverse rotations of the motor 32.

[0024] The lifting bracket assembly 2 includes a lifting bracket 21 and an electromagnetic exciter 22. The electromagnetic exciter 22 is fixed on the lifting bracket 21 by bolts. The lifting bracket 21 includes a working platform welded body 211, two sets of bracket locking assemblies 212, a lead screw nut 213 and four guide rail sliders 214. The four guide rail sliders 214 are respectively connected to two linear guide rails 4 in pairs. The guide rail sliders 214 are fixedly connected to the four corners of the working platform welded body 211 through pads. The lifting bracket assembly 2 is moved on the linear guide rail 4 by connecting the four four-directional equal load linear guide rail sliders 214 with the linear guide rail 4.

[0025] The lead screw nut 213 is sleeved and connected to the lead screw 31 , and the lead screw nut 213 is fixedly connected to the center position of the working platform welding body 211 through a nut support 2131 .

[0026] Each set of bracket locking components 212 includes an elastic locking steel plate 2121, and the upper and lower ends of the elastic locking steel plate 2121 on the side close to the screw nut 213 are respectively connected to a fixed base plate 2122 and a fixed clamping plate 2123, and the upper and lower ends of the elastic locking steel plate 2121 on the side away from the screw nut 213 are respectively connected to a fixed base plate 2124 and an elastic locking U-shaped groove clamp 2125. The elastic locking U-shaped groove clamp 2125 is clamped on the side of the equilateral angle steel 15, and a plurality of fastening bolts 2126 are arranged on the back of the elastic locking U-shaped groove clamp 2125. When the lifting bracket 21 moves into place, tighten the two fastening bolts 2126 with copper column pressure feet to lock the lifting bracket 21 on the equilateral angle steels 15 on both sides. The elastic deformation of the elastic locking U-shaped groove clamp 2125 and the elastic locking steel plate 2121, and the shock absorption and anti-loosening of the copper column pressure feet together ensure the stability of the platform when the exciter is working.

[0027] The specific connection methods of each part all adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0028] During specific use, the lifting bracket assembly 2 is driven by the lifting machine assembly 3 to stably rise or fall on the linear guide rail 4, thereby solving the lifting and lowering problem of the electromagnetic exciter 22 in the anechoic chamber and ensuring that the position of the electromagnetic exciter 22 can be accurately adjusted.

[0029] Therefore, the present invention adopts the above-mentioned large-stroke and high-stability movable exciter lifting device to ensure that the exciter can accurately adjust its position, ensure the stability of the workbench during the lifting and excitation process, and avoid vibration interference with the test results.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A large-stroke, high-stability, movable exciter lifting device, characterized in that: It includes a lifting column support assembly, a lifting bracket assembly, an elevator assembly and two linear guide rails, wherein the linear guide rails and the elevator assembly are both arranged on the lifting column support assembly, and the two linear guide rails are respectively arranged on both sides of the elevator assembly, the elevator assembly drives the lifting bracket assembly to move, and the lifting bracket assembly is connected to the linear guide rails.

2. According to claim 1, a large-stroke, high-stability, movable exciter lifting device is characterized by: The lifting column support assembly includes a column welded body, the bottom of the column welded body is connected to one end of a plurality of connecting tubes, the other ends of the plurality of connecting tubes are connected to a counterweight support tube, the counterweight support tube is connected to a support tube, the support tube is penetrated by a base screw, the top of the base screw is penetrated by a handle, the bottom of the base screw is connected to a support plate, and the connection between the base screw and the support tube is fixed by screws.

3. The large-stroke, high-stability, movable exciter lifting device according to claim 2 is characterized in that: Two equilateral angle steels are symmetrically fixedly arranged on one side surface of the column welding body, and the equilateral angle steels are connected to the linear guide rail; A motor seat bottom plate is arranged above the two equilateral angle steels, and the motor seat bottom plate is fixedly arranged on the top end of the column welding body. A spherical bearing connecting plate is arranged below the two equilateral angle steels, and the spherical bearing connecting plate is arranged above the connection point of the two connecting pipes.

4. The large-stroke, high-stability, movable exciter lifting device according to claim 3 is characterized in that: The top ends of the other three side surfaces of the column welded body are fixedly connected with upper shaft earrings, and the other three side surfaces of the column welded body are provided with diagonal bracing trusses, the top ends of the diagonal bracing trusses are hingedly connected to the upper shaft earrings, the bottom ends of the diagonal bracing trusses are penetrated by the lower end shaft, both ends of the lower end shaft are connected to the lower bearing seat, and the lower bearing seat is connected to the counterweight support tube through a connecting plate.

5. The large-stroke, high-stability, movable exciter lifting device according to claim 4 is characterized in that: A box cover is arranged on the top of the counterweight support tube, and a universal wheel is connected to the bottom of the counterweight support tube via a connecting fixing plate.

6. The large-stroke, high-stability, movable exciter lifting device according to claim 5, characterized in that: The elevator assembly includes a lead screw, a motor and a turbine, wherein a worm and a turbine are arranged in the turbine, the top end of the lead screw passes through the bottom plate of the motor seat and is fixedly connected to the turbine, the bottom end of the lead screw is connected to a spherical bearing, and the bearing seat of the spherical bearing is fixedly connected to the spherical bearing connecting plate; The turbine and the worm are meshingly connected, and the worm is fixedly connected to the output end of the motor.

7. The large-stroke, high-stability, movable exciter lifting device according to claim 6, characterized in that: The lifting bracket assembly includes a lifting bracket and an electromagnetic exciter, the electromagnetic exciter is fixedly arranged on the lifting bracket by bolts, the lifting bracket includes a working platform welded body, two sets of bracket locking assemblies, a lead screw nut and four guide rail sliders, the four guide rail sliders are respectively connected to two linear guide rails in pairs, and the guide rail sliders are fixedly connected to the four corners of the working platform welded body through pads; The lead screw nut is sleeved and connected to the lead screw, and the lead screw nut is fixedly connected to the center position of the working platform welding body through a nut support.

8. The large-stroke, high-stability, movable exciter lifting device according to claim 7, characterized in that: Each group of the bracket locking assembly includes an elastic locking steel plate, and the upper and lower ends of the elastic locking steel plate on the side close to the screw nut are respectively connected to a fixed base plate 1 and a fixed clamping plate, and the upper and lower ends of the elastic locking steel plate on the side away from the screw nut are respectively connected to a fixed base plate 2 and an elastic locking U-shaped groove clamping plate, the elastic locking U-shaped groove clamping plate is clamped on the side of the equilateral angle steel, and a plurality of fastening bolts are arranged on the back of the elastic locking U-shaped groove clamping plate.

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