CN117516929B - Multifunctional screw rod lifter test bed - Google Patents
Multifunctional screw rod lifter test bed Download PDFInfo
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- CN117516929B CN117516929B CN202410024433.4A CN202410024433A CN117516929B CN 117516929 B CN117516929 B CN 117516929B CN 202410024433 A CN202410024433 A CN 202410024433A CN 117516929 B CN117516929 B CN 117516929B
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- 238000012360 testing method Methods 0.000 title claims abstract description 42
- 230000007246 mechanism Effects 0.000 claims abstract description 25
- 239000003638 chemical reducing agent Substances 0.000 claims description 35
- 230000008878 coupling Effects 0.000 claims description 12
- 238000010168 coupling process Methods 0.000 claims description 12
- 238000005859 coupling reaction Methods 0.000 claims description 12
- 230000003287 optical effect Effects 0.000 claims description 7
- 229920002635 polyurethane Polymers 0.000 claims description 6
- 239000004814 polyurethane Substances 0.000 claims description 6
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 230000006835 compression Effects 0.000 abstract description 9
- 238000007906 compression Methods 0.000 abstract description 9
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000006073 displacement reaction Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000005259 measurement Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/025—Test-benches with rotational drive means and loading means; Load or drive simulation
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D15/00—Control of mechanical force or stress; Control of mechanical pressure
- G05D15/01—Control of mechanical force or stress; Control of mechanical pressure characterised by the use of electric means
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Transmission Devices (AREA)
Abstract
The invention relates to the technical field of screw lifters, and discloses a multifunctional screw lifter test bed which comprises a lower frame, wherein a lifter fixing device and a screw lifter driving mechanism are fixed at the top of the lower frame, a screw lifter is fixed on the upper end face of the lifter fixing device, and a loading mechanism is fixed on the upper frame. The pressure transmission part of the multifunctional screw rod elevator test bed adopts a disc spring, the disc spring is an elastic body, the pressure is in direct proportion to the compression amount of the disc spring, the compression amount is controlled by the relative displacement amount of the ball screw and the elevator screw rod, the control program is very easy to realize, and the relative positions of the trapezoidal screw rod and the ball screw rod are controlled by the two servo motors in a linkage way, so that the compression amount of the disc spring is kept in a certain range, the screw rod of the screw rod elevator is subjected to constant pressure, and when the load is required to be changed, the required load value is only required to be input on the control panel.
Description
Technical Field
The invention relates to the technical field of screw rod elevators, in particular to a multifunctional screw rod elevator test bed.
Background
At present, in the test equipment for detecting the transmission efficiency of the elevator, the loading mode mainly adopts the modes of directly applying weights or connecting the rollers with weights and the like, the actual consumed power can be calculated through the lifting speed and the load size of the screw rod of the elevator, the output power of the motor can be calculated through the output rotating speed and the actual output torque of the motor, the ratio of the actual consumed power to the output power of the motor is the transmission efficiency of the screw rod elevator, and when the load required to be applied is very large, the structure occupies a very large space, so that the cost and the operation difficulty are increased intangibly. In addition, when the load changes in magnitude, the load force is inconvenient to adjust.
1. Because the loading form in the prior art adopts the forms of directly applying weights or connecting rollers with weights and the like, a weight measuring link is needed before loading, and the load is placed on the top plate of the screw rod lifter for testing after the weight measurement is finished, if the load size needs to be changed, the weight measurement is needed again, and the operation is inconvenient for the test of frequently changing the load size;
2. when the screw rod lifter needs to carry out a large load test, the required weight or counter weight is too much, which is not reasonable from the economical aspect. In addition, when the weight serving as the load is too much, a larger supporting plate, a rack and a guide mechanism are required to be manufactured to support the load, and additional cost is increased;
3. in the prior art, the installation seat of the lifter corresponds to the installation size of the box body of the screw lifter, and if the screw lifter with other seat numbers needs to be replaced, the installation seat of the lifter also needs to be replaced, so that the universality is poor.
In view of the above, improvements to existing devices are needed.
Disclosure of Invention
The invention aims to provide a multifunctional screw rod lifter test bed, which solves the problems that the conventional technology is inconvenient to frequently adjust the load when a screw rod lifter is used for loading test, and the mounting seat of the test bed has no universality.
In order to achieve the above purpose, the present invention provides the following technical solutions: the multifunctional screw rod lifter test bed comprises a lower frame, wherein casters and fixed foot cups are fixed at the bottom of the lower frame, an upper frame is fixed at the top of the lower frame through screws, a lifter fixing device and a screw rod lifter driving mechanism are fixed at the top of the lower frame, a screw rod lifter is fixed on the upper end face of the lifter fixing device, a loading mechanism is fixed on the upper frame, and an electric cabinet is fixed on the lower frame.
Preferably, the lifter fixing device comprises a workbench and first linear guide rails, four first sliding blocks are fixed at the bottom of the workbench, the first linear guide rails are symmetrically fixed on two sides of the upper end face of the lower rack through screws, two first sliding blocks are connected to each first linear guide rail in a sliding mode, first limiting blocks are symmetrically fixed at two ends of each first linear guide rail, and a screw lifter is fixed on the upper end face of the workbench.
Preferably, the screw rod lifter driving mechanism comprises a first servo motor and a telescopic universal joint coupling, an output shaft of the first servo motor is connected with a first planetary reducer, one end of the telescopic universal joint coupling is connected with an output shaft of the first planetary reducer through a shaft sleeve, the other end of the telescopic universal joint coupling is connected with an input shaft of the screw rod lifter, the first planetary reducer is fixed on a sliding table through a reducer mounting bracket, four second sliding blocks are fixed on the periphery of the sliding table, a linear guide mounting plate is fixed on the top of the lower frame, two second linear guide rails are fixed on the linear guide mounting plate, two second sliding blocks are connected to each second linear guide in a sliding mode, and second limiting blocks are symmetrically fixed at two ends of each second linear guide rail.
Preferably, the loading mechanism comprises a second servo motor, an output shaft of the second servo motor is connected with a second planetary reducer, the second planetary reducer is fixed on a reducer mounting seat, one side of the reducer mounting seat is fixed with a top plate through a screw and a cylindrical pin, an input shaft of the second planetary reducer is connected with a driving gear, one side of the driving gear is meshed and connected with a driven gear, the bottom of the driven gear is fixed with a ball nut and a nut mounting seat through a screw, the inner side of the ball nut is connected with a ball screw, the nut mounting seat is mounted in a bearing chamber through a tapered roller bearing, a thrust ball bearing and a spacer ring, and the nut mounting seat is fixed in the bearing chamber through a bearing cover.
Preferably, guide posts and linear bearings are fixed on two sides of the ball nut, a guide post mounting plate is fixed on the upper frame, and the two guide posts are fixed on the guide post mounting plate through guide shaft mounting seats.
Preferably, the head of the ball screw is fixed on the guide post mounting plate through a lock nut.
Preferably, the screw rod lifter is connected with the pressing plate through a flange plate, the upper side of the pressing plate is connected with the pressure sensor through a belleville spring, the pressure sensor is connected with external threads on a belleville spring positioning plate, and the pressure sensor is fixed on the guide post mounting plate through an adapter flange.
Preferably, four disc spring guide posts are fixed at the edge of the pressing plate through screws, two ends of each disc spring guide post are external threads, the middle part of each disc spring guide post is an optical axis, the optical axis part of each disc spring guide post penetrates through the four guide sleeves, and nuts and flat pads are arranged at one end of each disc spring guide post.
Preferably, two polyurethane cushions are fixed at the upper end of the guide post mounting plate.
Compared with the prior art, the invention has the beneficial effects that:
1. the multifunctional screw rod elevator test bed can achieve the purposes of relatively more stable pressure and small fluctuation, the pressure transmission component adopts the disc spring, the disc spring is an elastomer, the pressure is in direct proportion to the compression amount of the disc spring, the compression amount is controlled by the relative displacement amount of the ball screw and the elevator screw rod, the control program is very easy to realize, if the pressing plate is tightly attached to the elevator screw rod flange by adopting rigid connection, and the pressing plate is tightly attached to the elevator screw rod flange, the pressing plate is driven by two servo motors, and the extremely small relative displacement amount corresponds to larger pressure due to rigid connection, and the extremely small relative displacement amount has larger pressure fluctuation in the process, so that an ideal pressure value is not easy to control by the program;
2. the invention relates to a multifunctional screw rod lifter test bed, which can achieve the aim of convenient pressure adjustment, wherein a servo motor drives a ball screw to compress a disc spring to adjust the load, after the load reaches a set value, a feedback signal is given by a pressure sensor, and the two servo motors control the relative positions of a trapezoidal screw rod and the ball screw rod in a linkage way to keep the compression amount of the disc spring within a certain range, so that the screw rod of a screw rod lifter is subjected to constant pressure, and when the load is required to be changed, only the required load value is required to be input on a control panel;
3. the multifunctional screw rod lifter test bed can achieve the purpose of strong universality, various hole sites and T-shaped grooves are machined on the workbench, the installation of screw rod lifter box bodies with different base numbers can be met, a plurality of hole sites are correspondingly installed with a screw rod flange of a lifter on a pressing plate, a universal joint telescopic coupling is adopted between an output shaft of a second planetary reducer and an input shaft of the screw rod lifter, the front and rear positions of the second planetary reducer are adjustable, and the installation of screw rod lifters with different center heights and center distances can be met.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic elevational view of the present invention;
FIG. 3 is a left side view of the present invention;
FIG. 4 is a schematic top view of the present invention;
FIG. 5 is a schematic elevational view of the loading mechanism of the present invention;
FIG. 6 is a right side view of the loading mechanism of the present invention;
FIG. 7 is a schematic top view of an elevator fixture of the present invention;
FIG. 8 is a schematic elevational view of an elevator fixture of the present invention;
FIG. 9 is a schematic elevational view of the drive mechanism of the lead screw elevator of the present invention;
FIG. 10 is a schematic top view of a drive mechanism of the screw elevator of the present invention;
FIG. 11 is a schematic diagram of a left-hand construction of a screw elevator drive mechanism of the present invention;
FIG. 12 is a schematic view of the lower frame structure of the present invention;
FIG. 13 is a schematic view of the upper housing structure of the present invention;
FIG. 14 is a schematic view of a table structure according to the present invention;
fig. 15 is a graph of elevator test load, efficiency, rotational speed, time of the present invention.
In the figure: 1. a lower frame; 2. casters; 3. fixing the foot cup; 4. an upper frame; 5. an elevator fixing device; 501. a work table; 502. a first linear guide rail; 503. a first slider; 504. a first limiting block; 6. a screw rod lifter; 7. a screw elevator driving mechanism; 701. a first servo motor; 702. a first planetary reducer; 703. a shaft sleeve; 704. a telescopic universal joint coupling; 705. a speed reducer mounting bracket; 706. a second slider; 707. a second linear guide rail; 708. a second limiting block; 709. a linear guide rail mounting plate; 710. a sliding table; 8. a loading mechanism; 801. a second servo motor; 802. a second planetary reducer; 803. a speed reducer mounting seat; 804. a drive gear; 805. a top plate; 806. a ball screw; 807. a driven gear; 808. a bearing cap; 809. a bearing chamber; 810. a ball nut; 811. tapered roller bearings; 812. a thrust ball bearing; 813. a guide post mounting plate; 814. a guide post; 815. a nut mounting seat; 816. a spacer ring; 817. a linear bearing; 818. a guide shaft mounting seat; 819. guide sleeve; 820. a disc spring guide post; 821. a pressing plate; 822. a disc spring positioning disc; 823. a belleville spring; 824. a pressure sensor; 825. a lock nut; 826. an adapter flange; 827. a polyurethane cushion; 9. an electric control box.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which are obtained by a worker of ordinary skill in the art without creative efforts, are within the protection scope of the present invention based on the embodiments of the present invention.
Referring to fig. 1 to 15, the present invention provides a technical solution: the multifunctional screw rod lifter test bed comprises a lower frame 1, wherein casters 2 and a fixed foot cup 3 are fixed at the bottom of the lower frame 1, an upper frame 4 is fixed at the top of the lower frame 1 through screws, a lifter fixing device 5 and a screw rod lifter driving mechanism 7 are fixed at the top of the lower frame 1, a screw rod lifter 6 is fixed at the upper end face of the lifter fixing device 5, a loading mechanism 8 is fixed on the upper frame 4, and an electric cabinet 9 is fixed on the lower frame 1.
In this embodiment, the lifter fixing device 5 includes a workbench 501 and a first linear guide 502, four first sliders 503 are fixed at the bottom of the workbench 501, the first linear guide 502 is symmetrically fixed at two sides of the upper end face of the lower frame 1 through screws, two first sliders 503 are slidably connected to each first linear guide 502, first limiting blocks 504 are symmetrically fixed at two ends of the first linear guide 502, a screw lifter 6 is fixed at the upper end face of the workbench 501, the first sliders 503 can slide on the first linear guide 502, the screw lifter 6 is conveniently positioned, threaded holes corresponding to mounting holes of the first linear guide 502 and grooves corresponding to the width of the first linear guide 502 are machined in the mounting face of the upper end of the lower frame 1, and the setting of the first limiting blocks 504 can prevent the workbench 501 from being out of the overtravel.
In the present embodiment, the screw lifter driving mechanism 7 includes a first servo motor 701 and a telescopic universal joint coupling 704, and an output shaft of the first servo motor 701 is connected with a first planetary reducer 702, one end of the telescopic universal joint coupling 704 is connected with an output shaft of the first planetary reducer 702 through a shaft sleeve 703, and the other end of the telescopic universal joint coupling 704 is connected with an input shaft of the screw lifter 6, the first planetary reducer 702 is fixed on a sliding table 710 through a reducer mounting bracket 705, four second sliders 706 are fixed around the sliding table 710, a linear guide mounting plate 709 is fixed on the top of the lower frame 1, two second linear guide 707 are fixed on the linear guide mounting plate 709, and two second sliders 706 are slidably connected on each second linear guide 707, second stoppers 708 are symmetrically fixed on both ends of the second linear guide 707, the output shaft of the first servo motor 701 rotates to drive the output shaft of the first planetary reducer 702 to rotate, the rotating speed is reduced, the output torque is amplified, the input shaft of the screw rod lifter 6 rotates, thereby controlling the screw rod lifter 6 to ascend and descend, the first servo motor 701 and the first planetary reducer 702 can slide on the second linear guide 707, the output shaft of the first planetary reducer 702 is aligned with the input shaft of the screw rod lifter 6, the axes of the first planetary reducer 702 and the screw rod lifter are positioned in the same plane, the height difference is compensated by the telescopic universal joint coupling 704, the second limiting block 708 can prevent the sliding table 710 from overtraveling, the U-shaped long groove is arranged on the linear guide mounting plate 709, the position of the first planetary reducer 702 is locked by a screw after being positioned, the screw rod lifter driving mechanism 7 is fixed on the left side of the mounting surface at the upper end of the lower frame 1 by a screw, the lower frame 1 has screw holes corresponding to the mounting holes of the linear guide mounting plate 709.
In this embodiment, the loading mechanism 8 includes a second servo motor 801, and the output shaft of the second servo motor 801 is connected with a second planetary reducer 802, the second planetary reducer 802 is fixed on a reducer mounting seat 803, one side of the reducer mounting seat 803 is fixed with a top plate 805 through a screw and a cylindrical pin, the input shaft of the second planetary reducer 802 is connected with a driving gear 804, one side of the driving gear 804 is meshed with a driven gear 807, the bottom of the driven gear 807 is fixed with a ball nut 810 and a nut mounting seat 815 through a screw, the inner side of the ball nut 810 is connected with a ball screw 806 in a threaded manner, the nut mounting seat 815 is fixed in a bearing chamber 809 through a tapered roller bearing 811, a thrust ball bearing 812 and a spacer 816, the nut mounting seat 815 is fixed in the bearing chamber 809 through a bearing cover 808, the output shaft of the second servo motor 801 rotates to drive the input shaft of the second planetary reducer 802 to increase the rotation speed and the rotation and torque of the driving gear 804 are matched with a flat key, the driving gear 804 is positioned, the driving gear 804 rotates to drive the driven gear 807 to rotate, the ball screw 810 rotates to drive the ball screw to drive the ball nut 810 to move up and down, and the ball nut 810 moves up and down, and the ball nut 810 can be supported by the ball nut 810 and can be pressed by the ball nut mounting seat 808.
In this embodiment, two sides of the ball nut 810 are fixed with a guide post 814 and a linear bearing 817, the upper frame 4 is fixed with a guide post mounting plate 813, the two guide posts 814 are fixed on the guide post mounting plate 813 through a guide shaft mounting seat 818, and the guide posts 814 are used for counteracting lateral force and playing a guiding role.
In this embodiment, the head of the ball screw 806 is fixed to the guide post mounting plate 813 by a lock nut 825, and an inner hole and a flat surface and a screw are positioned in the middle of the guide post mounting plate 813 and can be prevented from rotating.
In this embodiment, the screw rod lifter 6 is connected with the pressing plate 821 through a flange plate, the upper side of the pressing plate 821 is connected with the pressure sensor 824 through a belleville spring 823, the pressure sensor 824 is connected with external threads on a belleville spring positioning plate 822, the pressure sensor 824 is fixed on the guide post mounting plate 813 through an adapting flange 826, the pressure sensor 824 can output the real-time pressure value and give out a signal, and the combined belleville spring 823 has an elastic force range of 0-20000kgf in the compression limit stroke, so that the test requirement is met.
In this embodiment, four disc spring guide posts 820 are fixed at the edge of the pressing plate 821 by screws, two ends of the disc spring guide posts 820 are external threads, the middle part of the disc spring guide posts 820 is an optical axis, the optical axis part of the disc spring guide posts 820 passes through four guide sleeves 819, and nuts and flat pads are mounted at one end of the disc spring guide posts 820 and act to slightly lock the nuts to prevent the disc springs 823 arranged in a combined manner from moving when no load occurs.
In this embodiment, two polyurethane cushions 827 are fixed to the upper end of the guide post mounting plate 813, and the polyurethane cushions 827 can prevent the guide post mounting plate 813 from colliding with the bearing chamber 809 above when the screw rod is overtravel.
The application method and the advantages of the invention are as follows: the multifunctional screw rod lifter test bed has the following working process:
as shown in fig. 1 to 15: when the lifter fixing device 5 is installed, the workbench 501 is pushed to the rightmost end, the screw lifter 6 is lifted to the upper end face of the workbench 501 by a crane, the screw lifter is fixed on the workbench 501 by a screw, then the workbench 501 is pushed inwards, the screw flange of the screw lifter 6 is rotated to be contacted with the pressing plate 821, then the workbench 501 is connected by a screw, four threaded holes are formed in the workbench 501, the long screws are respectively screwed in to enable the threaded end faces to bear against the lower frame 1, thus the workbench 501 is locked, in an initial state, the belleville spring 823 is not compressed, four belleville spring guide posts 820 are connected with the workbench 821 by screws, the two ends of the belleville spring guide posts 820 are external threads, the middle part is an optical axis, the optical axis part of the belleville spring guide posts 820 penetrates through the four guide sleeves 819, the other end of the belleville spring guide posts 820 is provided with nuts and flat pads, the belleville springs 823 arranged in a slightly locking mode are used for preventing the belleville springs 823 arranged in a combined mode from moving when no load, the upper end of the guide post mounting plate 813 is provided with two polyurethane buffer pads 827, so that collision of the guide post mounting plate 813 with a bearing chamber 809 above the guide post mounting plate 813 is prevented when the screw rod is overtraveled, a pressing plate 821 is connected with a flange plate of the screw rod lifter 6 when the loading mechanism 8 is loaded, the screw rod of the screw rod lifter 6 is set to be kept still by a program, the upper second servo motor 801 drives the ball screw rod 806 to be pressed down, the belleville spring 823 is compressed at the moment, the pressure of the belleville spring 823 to the flange plate of the screw rod lifter 6 is gradually increased along with the increase of the compression amount, when the pressure value reaches a program set pressure value, the bottom second servo motor 801 starts to drive the screw rod lifter 6 to move, at the moment, the ball screw rod 806 and the trapezoidal screw rod of the lower screw rod lifter 6 synchronously lift, the compression amount of the belleville spring 823 is kept unchanged, therefore the trapezoidal screw rod of the screw rod lifter 6 can obtain a stable pressure value, the test operation process is as follows: the first step: the product to be tested by the tester is arranged on the test bench according to the requirement, and the firm and reliable connection of the products is ensured; and a second step of: inputting basic parameters of a test product into a touch screen controller by a tester to finish parameter setting; and a third step of: the testing personnel rotates the manual/automatic switching knob to a manual gear, the touch screen controller is switched to a manual operation interface, the manual control ball screw 806 moves downwards until the flange of the testing screw lifter 6 contacts the pressing plate 821, and the flange at the head of the testing screw lifter 6 screw is connected with the pressing plate 821 through bolts; and a third step of: the manual/automatic switch is switched to an automatic gear, an operation button is pressed, a PLC main test program is started, the second servo motor 801 is controlled to rotate slowly, the ball screw 806 moves downwards until a pressure signal of the pressure sensor 824 reaches a set pressure value allowable deviation +/-2%, after the pressure reaches a set value, the PLC controls the second servo motor 801 and the first servo motor 701 to simultaneously rotate, operation parameters are calculated through a PLC built-in program according to the set parameters of a tester, synchronous upward movement of the ball screw 806 and the test screw lifter 6 is ensured, the PLC adjusts the operation parameters of the second servo motor 801 in real time according to the signal of the pressure sensor 824 in the movement process, the pressure fluctuation of the pressure sensor 824 and the set value error are ensured to be within +/-2%, and therefore the dynamic load fluctuation of the test screw lifter 6 is ensured to be within +/-2%. When the test is run to the maximum stroke, the PLC controls the two motors to rotate reversely at the same time, so that the ball screw 806 and the screw of the test screw lifter 6 synchronously move downwards, the control principle is the same as that of the ball screw 806 and the screw of the test screw lifter 6 in the upward movement process, the test is completed until the test is completed in an initial running position, the test needs to be performed circularly for a plurality of times, the PLC controls the whole system to continue the next cycle test until the required cycle times are reached, and the touch screen controller acquires operation data once every 0.1S during the movement and transmits the data to the computer; fourth step: the computer generates a load, efficiency, rotating speed and time curve chart as shown in figure 15 through internal program calculation according to the received data, and further generates an elevator test report; fifth step: and (3) detaching the test screw lifter 6, adjusting each shaft of the test table to a zero position, and preparing for the next test.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present invention, and are not intended to limit the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. Multifunctional screw rod elevator test bed, including lower frame (1), its characterized in that: the bottom of the lower frame (1) is fixedly provided with a trundle (2) and a fixed foot cup (3), the top of the lower frame (1) is fixedly provided with an upper frame (4) through screws, the top of the lower frame (1) is fixedly provided with a lifter fixing device (5) and a screw lifter driving mechanism (7), the upper end face of the lifter fixing device (5) is fixedly provided with a screw lifter (6), the upper frame (4) is fixedly provided with a loading mechanism (8), the lower frame (1) is fixedly provided with an electric cabinet (9), the loading mechanism (8) comprises a second servo motor (801), the output shaft of the second servo motor (801) is connected with a second planetary reducer (802), one side of the second planetary reducer (802) is fixedly provided with a top plate (805) through screws and cylindrical pins, the input shaft of the second planetary reducer (802) is connected with a driving gear (804), one side of the driving gear (804) is fixedly provided with a loading mechanism (8), the bottom of the second planetary reducer (801) is fixedly provided with a ball nut (806) through a ball screw nut (803), the ball nut (806) is fixedly provided with a ball nut (810), the nut mounting seat (815) is mounted in the bearing chamber (809) through a tapered roller bearing (811), a thrust ball bearing (812) and a spacer ring (816), the nut mounting seat (815) is fixed in the bearing chamber (809) through a bearing cover (808), guide posts (814) and linear bearings (817) are fixed on two sides of the ball nut (810), a guide post mounting plate (813) is fixed on the upper frame (4), two guide posts (814) are fixed on the guide post mounting plate (813) through a guide shaft mounting seat (818), the heads of the ball screws (806) are fixed on the guide post mounting plate (813) through locking nuts (825), the screw rod lifter (6) is connected with a pressing plate (821) through a flange plate, the upper side of the pressing plate (821) is connected with a pressure sensor (824) through a disc spring (823), the pressure sensor (824) is connected with external threads on a disc positioning disc (822), the pressure sensor (824) is fixed on the guide post mounting plate (813) through an adapter flange (813), the guide posts (820) are fixed on the edges of the guide posts (820) through disc springs (821), the guide posts (820) are fixed on the middle parts of the guide posts (820) through the disc screws (821), the optical axis part of the disc spring guide post (820) penetrates through the four guide sleeves (819), a nut and a flat pad are arranged at one end of the disc spring guide post (820), and two polyurethane buffer pads (827) are fixed at the upper end of the guide post mounting plate (813).
2. The multi-function lead screw elevator test stand of claim 1, wherein: the lifter fixing device (5) comprises a workbench (501) and first linear guide rails (502), four first sliding blocks (503) are fixed at the bottom of the workbench (501), the first linear guide rails (502) are symmetrically fixed on two sides of the upper end face of the lower rack (1) through screws, two first sliding blocks (503) are connected to each first linear guide rail (502) in a sliding mode, first limiting blocks (504) are symmetrically fixed at two ends of each first linear guide rail (502), and a screw lifter (6) is fixed on the upper end face of the workbench (501).
3. The multi-function lead screw elevator test stand of claim 1, wherein: the screw rod lifter driving mechanism (7) comprises a first servo motor (701) and a telescopic universal joint coupling (704), an output shaft of the first servo motor (701) is connected with a first linear guide rail mounting plate (709) and two second linear guide rails (707) are fixed on the top of the lower frame (1), one end of the telescopic universal joint coupling (704) is connected with the output shaft of the first linear guide rail (702) through a shaft sleeve (703), the other end of the telescopic universal joint coupling (704) is connected with an input shaft of the screw rod lifter (6), the first linear guide rail (702) is fixed on a sliding table (710) through a speed reducer mounting bracket (705), four second sliding blocks (706) are fixed on the periphery of the sliding table (710), two second linear guide rails (707) are fixed on the linear guide rail mounting plate (709), two second limiting blocks (708) are symmetrically fixed on two ends of each second linear guide rail (707).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410024433.4A CN117516929B (en) | 2024-01-08 | 2024-01-08 | Multifunctional screw rod lifter test bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410024433.4A CN117516929B (en) | 2024-01-08 | 2024-01-08 | Multifunctional screw rod lifter test bed |
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| Publication Number | Publication Date |
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| CN117516929A CN117516929A (en) | 2024-02-06 |
| CN117516929B true CN117516929B (en) | 2024-04-12 |
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| CN202410024433.4A Active CN117516929B (en) | 2024-01-08 | 2024-01-08 | Multifunctional screw rod lifter test bed |
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| CN (1) | CN117516929B (en) |
Citations (8)
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| DE202013004373U1 (en) * | 2013-05-13 | 2013-07-30 | Expresso Deutschland Gmbh | Mobile lifting device |
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| CN117516929A (en) | 2024-02-06 |
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