CN220872077U - Load adjusting and distributing device for screw pair - Google Patents
Load adjusting and distributing device for screw pair Download PDFInfo
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- CN220872077U CN220872077U CN202322805826.2U CN202322805826U CN220872077U CN 220872077 U CN220872077 U CN 220872077U CN 202322805826 U CN202322805826 U CN 202322805826U CN 220872077 U CN220872077 U CN 220872077U
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- screw pair
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- 230000005540 biological transmission Effects 0.000 abstract description 9
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Abstract
The utility model provides a lead screw pair load adjusting and distributing device, which aims at the technical field of experimental tests and comprises a lead screw, a supporting part, a sliding part and a power part; the screw rod penetrates through the supporting component and is rotationally connected with the supporting component; the screw rod is sleeved with a sliding part and is rotationally connected with the sliding part; the end part of the screw rod is fixedly connected with a power component. According to the utility model, the load forces in different directions and different magnitudes of the screw pair can be correspondingly regulated according to the actual working condition requirements of the screw pair, and the performance test requirements of the screw pair such as load capacity, transmission efficiency and durability are met; and the structure is stable, the reliability is high, and the accuracy and the efficiency of the load performance test of the screw pair can be improved.
Description
Technical Field
The utility model relates to a lead screw pair load adjusting and distributing device, and belongs to the technical field of experimental tests.
Background
The screw pair transmission is a common mechanical transmission mode, is usually used for converting rotary motion into linear motion or vice versa, and consists of a screw and a nut, and force transmission and position adjustment are realized through the movement of the nut on the screw. Screw pair transmission is widely applied in industrial fields, such as machine tools, automation equipment, aerospace and the like. In order to ensure the performance and quality of the screw pair transmission and provide important information about design improvement, product verification, fault diagnosis, maintenance and the like, screw pair transmission test experiments are usually carried out, and the aspects of transmission efficiency, position accuracy, load capacity, durability, noise, vibration and the like are covered. The Chinese patent No. CN201810248227.6 discloses a test device for online testing of the friction torque and the axial load of a ball screw pair, which can study the relationship among the axial load, the pretightening force and the friction torque in the working state of the ball screw pair, and further study the friction and wear characteristics and the precision retention of the ball screw pair under different loads.
The inventors of the present utility model found that the prior art had the following problems: because the screw pair usually bears different load forces when working, such as the reciprocating action of an electric cylinder screw pair, the existing screw pair testing device can only set a fixed load to test the load capacity, and can not flexibly adjust and distribute the loads of different directions and different sizes of the screw pair, so that accurate experimental data of the load capacity, the transmission efficiency and the durability of the screw pair can not be obtained, and the screw pair load adjusting and distributing device has great significance.
Disclosure of utility model
In order to solve the technical problems, the utility model provides a lead screw pair load adjusting and distributing device, which can provide axial load forces with different magnitudes and directions for guide rail sliding blocks so as to meet the requirement of lead screw pair load performance test.
The utility model is realized by the following technical scheme.
The utility model provides a lead screw pair load adjusting and distributing device which comprises a lead screw, a supporting part, a sliding part and a power part, wherein the supporting part is arranged on the lead screw; the screw rod penetrates through the supporting component and is rotationally connected with the supporting component; the screw rod is sleeved with a sliding part and is rotationally connected with the sliding part; the end part of the screw rod is fixedly connected with a power component.
The support component comprises a first guide rail bracket, a first guide rail shaft, a second guide rail shaft and a second guide rail bracket; two ends of the first guide rail shaft and the second guide rail shaft are respectively and fixedly connected to the first guide rail bracket and the second guide rail bracket; one end of the screw rod is rotationally connected with the first guide rail bracket through a bearing, and the other end of the screw rod penetrates through the second guide rail bracket and is rotationally connected with the second guide rail bracket through the bearing.
The first guide rail shaft and the second guide rail shaft are arranged in parallel at the same height; the screw rod is positioned below the first guide rail shaft and the second guide rail shaft.
The sliding part comprises a guide rail sliding block, a guide rail shaft sleeve, a load nut sleeve, a fixed bolt hole and a fixed nut hole; the guide rail shaft sleeve is fixed in the through hole on the side surface of the guide rail sliding block through the fixing bolt hole; the load nut sleeve is fixed in the other through hole on the side surface of the guide rail sliding block through the fixing nut hole.
The sliding part further comprises an induction nut and a connecting rib; the two side surfaces of the guide rail sliding block along the moving direction are symmetrically and fixedly connected with induction nuts; the other side surface of the guide rail slide block is fixedly connected with an L-shaped connecting rib.
The two sides of the guide rail sliding block are provided with a first electromagnetic load generator and a second electromagnetic load generator which are both in sliding connection with the first guide rail shaft; an electromagnetic iron core with a through hole inside the first electromagnetic load generator is in sliding connection with the first guide rail shaft; the outer surface of the electromagnetic iron core is annularly connected with a fixed sleeve; the supporting lugs on the surface of the fixed sleeve are connected with an inductor through threads; the tail end of the inductor is connected with a power supply through a wire.
The power component comprises a fixed pin, a coupler, a load wire wheel, a load bracket and a load nut; the end part of the screw rod is inserted with a coupler through a fixing pin; the coupler is fixedly connected with a load wire wheel after passing through the through hole of the load bracket; the load line wheel is rotationally connected with the motor through a belt.
The utility model has the beneficial effects that: according to the actual working condition requirements of the screw pair, the load forces in different directions and different magnitudes of the screw pair can be correspondingly regulated, and the performance test requirements of the screw pair such as load capacity, transmission efficiency and durability are met; and the structure is stable, the reliability is high, and the accuracy and the efficiency of the load performance test of the screw pair can be improved.
Drawings
FIG. 1 is a schematic view of an axial structure of the present invention;
FIG. 2 is a schematic view of a guide rail slider structure in the present invention;
fig. 3 is a schematic diagram of an electromagnetic load generator according to the present invention.
In the figure: the device comprises a first guide rail bracket, a first guide rail shaft, a first electromagnetic load generator, a 4-sensing nut, a 5-connecting rib, a second guide rail shaft, a 7-fixing pin, an 8-coupler, a 9-load wire wheel, a 10-load bracket, a 11-load nut, a second guide rail bracket, a 13-guide rail slider, a 14-screw rod, a 15-guide rail shaft sleeve, a 16-load nut sleeve, a 17-fixing bolt hole, a 18-fixing nut hole, a 19-wire, a 20-inductor, a 21-fixing sleeve, a 22-electromagnetic iron core, a 23-second electromagnetic load generator, a 24-supporting component, a 25-sliding component and a 26-power component.
Detailed Description
The technical solution of the present utility model is further described below, but the scope of the claimed utility model is not limited to the above.
The first embodiment of the utility model relates to a screw pair load adjusting and distributing device shown in fig. 1-3, which comprises a screw 14, a supporting part 24, a sliding part 25 and a power part 26; the screw rod 14 penetrates through the supporting part 24 and is rotationally connected with the supporting part 24; the screw rod 14 is sleeved with a sliding part 25 and is rotationally connected with the sliding part 25; the end of the screw rod 14 is fixedly connected with a power component 26; the screw 14 can convert rotary motion into linear motion or convert linear motion into rotary motion, and the supporting component 24 provides a stress frame and a stress support; the slide member 25 moves linearly on the screw 14; the power unit 26 is used to provide rotational power to the screw 14.
The second embodiment of the present utility model is substantially the same as the first embodiment, mainly in that the scheme of the support member is optimized. The support member 24 includes a first rail bracket 1, a first rail shaft 2, a second rail shaft 6, and a second rail bracket 12; two ends of the first guide rail shaft 2 and the second guide rail shaft 6 are respectively and fixedly connected to the first guide rail bracket 1 and the second guide rail bracket 12; one end of the screw rod 14 is rotatably connected with the first guide rail bracket 1 through a bearing, and the other end of the screw rod passes through the second guide rail bracket 12 and is rotatably connected with the second guide rail bracket 12 through a bearing. The first guide rail bracket 1 and the second guide rail bracket 12 provide stress and rotation support for the first guide rail shaft 2, the second guide rail shaft 6 and the screw rod 14; the first guide rail shaft 2 and the second guide rail shaft 6 are of double guide rail design, so that external load and vibration can be better resisted, deformation and displacement of the structure are reduced, and rigidity and stability of the structure are improved.
The first guide rail shaft 2 and the second guide rail shaft 6 are arranged in parallel at the same height, so that stable and reliable support can be provided for the guide rail sliding block 13, and the guide rail sliding block 13 can be guided; the screw 14 is located below the first rail shaft 2 and the second rail shaft 6, enabling a compact structure.
The third embodiment of the present utility model is substantially the same as the first embodiment, and is mainly further optimized. The slide member 25 includes a rail slider 13, a rail bushing 15, a load nut sleeve 16, a fixing bolt hole 17, and a fixing nut hole 18; the guide rail shaft sleeve 15 is fixed in a through hole on the side surface of the guide rail sliding block 13 through a fixed bolt hole 17; the load nut sleeve 16 is fixed in another through hole in the side of the rail slider 13 by means of a fixing nut hole 18. The fixing bolt holes 17 are used for fixing the guide rail shaft sleeves 15 on the guide rail sliding blocks 13 to avoid axial separation of the guide rail sliding blocks; the fixed nut hole 18 is used for fixing the load nut sleeve 16 on the guide rail sliding block 13; the guide rail slider 13 moves axially on the screw 14 as a moving platform.
The sliding part 25 further comprises a sensing nut 4 and a connecting rib 5; the two side surfaces of the guide rail sliding block 13 along the moving direction are symmetrically and fixedly connected with induction nuts 4; the other side surface of the guide rail slide block 13 is fixedly connected with an L-shaped connecting rib 5. The sensing nut 4 is used for triggering the electromagnetic iron core 22 to generate axial load force; the connecting rib 5 can be used to connect another rail block.
The two sides of the guide rail slide block 13 are provided with a first electromagnetic load generator 3 and a second electromagnetic load generator 23, and are both in sliding connection with the first guide rail shaft 2; an electromagnetic iron core 22 with a through hole inside the first electromagnetic load generator 3 is in sliding connection with the first guide rail shaft 2; the outer surface of the electromagnetic iron core 22 is annularly connected with a fixed sleeve 21; the surface lugs of the fixed sleeve 21 are connected with an inductor 20 through threads; the end of the inductor 20 is connected to a power source via a wire 19. The first electromagnetic load generator 3 and the second electromagnetic load generator 23 can generate axial loads with opposite directions, and the magnitudes of the corresponding axial loads can be respectively adjusted; the power supply supplies power to the inductor 20 through the wire 19 so that the inductor and the sensing nut 4 trigger sensing mutually.
The power component 26 comprises a fixed pin 7, a coupler 8, a load wire wheel 9, a load bracket 10 and a load nut 11; the end part of the screw rod 14 is inserted with a coupler 8 through a fixing pin 7; the coupler 8 passes through a through hole of the load bracket 10 and is fixedly connected with a load wire wheel 9; the load wire wheel 9 is connected with the motor in a rotating way through a belt. The load bracket 10 plays a supporting role on the load wire wheel 9, the load wire wheel 9 receives the torque from the motor and transmits the torque to the screw rod 14 through the shaft device 8, and the fixing pin 7 can ensure that the shaft coupling 8 and the screw rod 14 synchronously rotate.
Based on the above, a typical working procedure of the present utility model is:
As shown in fig. 1-3, the lead screw assembly load adjustment and distribution device is fixed on a stable workbench and is powered by a motor when the utility model is implemented. Firstly, selecting a proper ball nut according to the size of a screw rod model, fixing a selected load nut sleeve 16 on a guide rail slide block 13 through a fixed nut hole 18, adjusting the guide rail slide block 13 to a proper position, enabling the screw rod 14 to pass through the guide rail slide block 13 and a second guide rail bracket 12 in a screwing mode, and fixing one end of the screw rod 14 on a coupler 8 through a fixed pin 7; according to the actual working condition requirement of the screw pair, the positions of the first electromagnetic load generator 3 and the second electromagnetic load generator 23 are adjusted, the axial load force provided by the first electromagnetic load generator 3 and the second electromagnetic load generator 23 is respectively set and adjusted through a control system, at the moment, an operator can provide power for the device through a control cabinet, after the device is started, the load wire wheel 9 drives the screw rod 14 to rotate through the coupler 8, when the screw rod 14 drives the guide rail slide block 13 to move leftwards, the induction nut 4 contacts the inductor 20, the first electromagnetic load generator 3 is started to provide right axial load force for the guide rail slide block 13, and similarly, when the guide rail slide block moves rightwards to trigger the second electromagnetic load generator 23, the second electromagnetic load generator 23 provides left axial load force for the guide rail slide block 13, the screw pair continuously performs repeated left-right linear motion, the axial load force can be continuously adjusted, after the test of the screw pair is completed, the power of the device is stopped, and the operator can release the fixing pin 7 to take down the screw rod 14.
Claims (7)
1. The utility model provides a lead screw pair load adjustment distribution device which characterized in that: comprises a screw rod (14), a supporting part (24), a sliding part (25) and a power part (26); the screw rod (14) penetrates through the supporting component (24) and is rotationally connected with the supporting component (24); the screw rod (14) is sleeved with a sliding part (25) and is rotationally connected with the sliding part (25); the end part of the screw rod (14) is fixedly connected with a power component (26).
2. The screw pair load adjusting and distributing device according to claim 1, wherein: the support part (24) comprises a first guide rail bracket (1), a first guide rail shaft (2), a second guide rail shaft (6) and a second guide rail bracket (12); two ends of the first guide rail shaft (2) and the second guide rail shaft (6) are respectively and fixedly connected to the first guide rail bracket (1) and the second guide rail bracket (12); one end of the screw rod (14) is rotationally connected with the first guide rail bracket (1) through a bearing, and the other end of the screw rod passes through the second guide rail bracket (12) and is rotationally connected with the second guide rail bracket (12) through the bearing.
3. The screw pair load adjusting and distributing device according to claim 2, wherein: the first guide rail shaft (2) and the second guide rail shaft (6) are arranged in parallel with the same height; the screw rod (14) is positioned below the first guide rail shaft (2) and the second guide rail shaft (6).
4. The screw pair load adjusting and distributing device according to claim 1, wherein: the sliding part (25) comprises a guide rail sliding block (13), a guide rail shaft sleeve (15), a load nut sleeve (16), a fixed bolt hole (17) and a fixed nut hole (18); the guide rail shaft sleeve (15) is fixed in a through hole on the side surface of the guide rail sliding block (13) through a fixing bolt hole (17); the load nut sleeve (16) is fixed in the other through hole on the side surface of the guide rail sliding block (13) through the fixed nut hole (18).
5. The screw pair load adjusting and distributing device according to claim 4, wherein: the sliding part (25) further comprises an induction nut (4) and a connecting rib (5); the two side surfaces of the guide rail sliding block (13) along the moving direction are symmetrically and fixedly connected with induction nuts (4); the other side surface of the guide rail sliding block (13) is fixedly connected with an L-shaped connecting rib (5).
6. The screw pair load adjusting and distributing device according to claim 4, wherein: the two sides of the guide rail sliding block (13) are provided with a first electromagnetic load generator (3) and a second electromagnetic load generator (23), and are both in sliding connection with the first guide rail shaft (2); an electromagnetic iron core (22) with a through hole inside the first electromagnetic load generator (3) is in sliding connection with the first guide rail shaft (2); the outer surface of the electromagnetic iron core (22) is annularly connected with a fixed sleeve (21); an inductor (20) is connected with the surface lugs of the fixed sleeve (21) in a threaded manner; the tail end of the inductor (20) is connected with a power supply through a lead (19).
7. The screw pair load adjusting and distributing device according to claim 1, wherein: the power component (26) comprises a fixing pin (7), a coupler (8), a load wire wheel (9), a load bracket (10) and a load nut (11); the end part of the screw rod (14) is inserted with a coupler (8) through a fixing pin (7); the coupler (8) is fixedly connected with a load wire wheel (9) after penetrating through a through hole of the load bracket (10); the load wire wheel (9) is rotationally connected with the motor through a belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322805826.2U CN220872077U (en) | 2023-10-19 | 2023-10-19 | Load adjusting and distributing device for screw pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322805826.2U CN220872077U (en) | 2023-10-19 | 2023-10-19 | Load adjusting and distributing device for screw pair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220872077U true CN220872077U (en) | 2024-04-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322805826.2U Active CN220872077U (en) | 2023-10-19 | 2023-10-19 | Load adjusting and distributing device for screw pair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220872077U (en) |
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2023
- 2023-10-19 CN CN202322805826.2U patent/CN220872077U/en active Active
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