CN220946806U - Transmission structure of direct-drive electric screw press - Google Patents
Transmission structure of direct-drive electric screw press Download PDFInfo
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- CN220946806U CN220946806U CN202322445544.6U CN202322445544U CN220946806U CN 220946806 U CN220946806 U CN 220946806U CN 202322445544 U CN202322445544 U CN 202322445544U CN 220946806 U CN220946806 U CN 220946806U
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- vertical shaft
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 33
- 210000004907 gland Anatomy 0.000 claims description 12
- 238000003825 pressing Methods 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The utility model relates to a transmission structure of a direct-drive electric screw press, which comprises a direct-drive motor, a flywheel shaft and a screw, and is technically characterized in that: the flywheel shaft consists of a hollow vertical shaft and a horizontal flange plate, a motor rotor of the direct-drive motor is provided with an external flange connected with the horizontal flange plate, a bearing mounting groove is arranged in the press machine body, a thrust bearing is arranged between the bottom of the bearing mounting groove and the lower end of the hollow vertical shaft, a gap compensation component is arranged between the thrust bearing and the hollow vertical shaft, a through hole is arranged at the center of the bottom of the bearing mounting groove, a fixing part of a screw rod sequentially penetrates through the through hole and the hollow vertical shaft and is fixed, a thrust bearing seat is fixed on the periphery of the lower end of the through hole, an annular round table is arranged at the position below the through hole of the screw rod, and a thrust bearing matched with the thrust bearing seat is arranged on the upper surface of the annular round table. The transmission structure solves the problems of low transmission efficiency, more easily damaged parts and high maintenance cost of the transmission structure of the existing electric screw press, has high transmission efficiency and fewer easily damaged parts, and saves the maintenance cost.
Description
Technical Field
The utility model relates to a transmission structure of an electric screw press, in particular to a transmission structure of a direct-drive electric screw press.
Background
The prior electric screw press transmission structure comprises a pinion assembly fixed at the top of a press body, a flywheel assembly meshed with the pinion assembly, a motor connected with an axle of the pinion assembly, and a screw rod connected with the axle of the flywheel assembly. But because the transmission parts between the motor and the screw are more, the transmission efficiency is low, the number of easily damaged parts is more, and the maintenance cost is high.
Disclosure of utility model
The utility model aims to provide a transmission structure of a direct-drive electric screw press, which is reasonable in structure and reliable in use, solves the problems of low transmission efficiency, more vulnerable parts and high maintenance cost of the conventional transmission structure of the electric screw press, improves the transmission efficiency by shortening a transmission chain, reduces vulnerable parts in the transmission structure, prolongs the service life and the maintenance period, and saves the maintenance cost.
The technical scheme of the utility model is as follows:
The utility model provides a directly drive electronic screw press transmission structure, includes directly drives motor, flywheel shaft and screw rod, directly drives the motor and is fixed in the press top, and its technical essential is: the flywheel shaft consists of a hollow vertical shaft and a horizontal flange plate arranged on the periphery of the hollow vertical shaft, a motor rotor of the direct-drive motor is provided with an external flange, the horizontal flange plate of the flywheel shaft is overlapped with the central line of the external flange and fixedly connected with the central line of the external flange, a bearing mounting groove is arranged in the machine body of the press machine, a thrust bearing is arranged between the bottom of the bearing mounting groove and the lower end of the hollow vertical shaft of the flywheel shaft, a gap compensation component is arranged between the upper end face of the thrust bearing and the lower end face of the hollow vertical shaft, a through hole is arranged at the center of the bottom of the bearing mounting groove, a fixing part of a screw rod sequentially penetrates through the through hole and the hollow vertical shaft and is fixedly connected with the hollow vertical shaft, a thrust bearing seat concentric with the through hole is fixedly arranged on the periphery of the lower end of the through hole, and an annular round table is arranged at the position below the through hole and provided with a thrust bearing matched with the thrust bearing seat.
The upper end of the fixed part of the screw is provided with external threads and leads out the upper end of the hollow vertical shaft, a plurality of first half-surrounded axial blind holes are uniformly formed in the upper end of the inner wall of the hollow vertical shaft, second half-surrounded axial blind holes which are in one-to-one correspondence with the first half-surrounded axial blind holes are formed in the outer wall of the screw, the second half-surrounded axial blind holes are buckled with the corresponding first half-surrounded axial blind holes to form pin positioning holes, pins are inserted into the pin positioning holes and are compressed by using annular gland, the turnups of the annular gland are fixedly connected with the upper end face of the hollow vertical shaft, the fixed part of the screw is connected with a locking nut by using external threads, the lower end face of the locking nut is tightly connected with the upper end face of the annular gland, the upper end of the locking nut is connected with the upper end of the screw by using a flat key, and a positioning screw connected with the locking nut is additionally arranged on the flat key.
The lower end face of the hollow vertical shaft is provided with the spigot corresponding to the thrust bearing, the horizontal plane of the spigot is uniformly provided with a plurality of inner grooves, the gap compensation assembly comprises a compensation spring arranged in the inner grooves, a mandrel connected with the compensation spring and a pressing ring arranged at the notch position of the inner grooves, an annular table is arranged on the periphery of the mandrel, the compensation spring is clamped between the annular table and the groove bottom of the inner grooves, an avoidance hole is formed in the center of the pressing ring, and the lower end of the mandrel penetrates through the avoidance hole and then is pressed on the upper end face of the thrust bearing in a propping mode, so that the gap between the thrust bearing and the flywheel shaft is adjusted.
According to the transmission structure of the direct-drive electric screw press, the outer peripheral surface of the annular round table on the screw is connected with the oil retainer, and the upper end of the oil retainer extends to a position above the contact surface of the thrust bearing seat and the thrust bearing.
According to the transmission structure of the direct-drive electric screw press, the shaft sleeve is arranged between the through hole of the bearing mounting groove and the screw.
According to the transmission structure of the direct-drive electric screw press, the direct-drive motor adopts the switch reluctance direct-drive motor.
The beneficial effects of the utility model are as follows:
1. the direct-drive motor is fixedly connected with the horizontal flange plate of the flywheel shaft by utilizing the external flange of the motor rotor, the flywheel shaft and the screw rod are directly driven to rotate, and the motor rotor becomes a part of inertia of the flywheel shaft. The problem of current electronic screw press transmission structure transmission inefficiency, easily damaged part are more, the maintenance expense is high is solved, improves transmission efficiency through shortening the drive chain, has reduced easily damaged part in the transmission structure simultaneously, has prolonged life and maintenance cycle, has practiced thrift the maintenance expense.
2. Through setting up thrust bearing to set up clearance compensation subassembly between thrust bearing and hollow vertical scroll, guarantee flywheel shaft's rotation stability, strengthen the unbalanced load ability of press simultaneously.
3. The screw rod utilizes a plurality of pins to be connected with flywheel shafts, utilizes annular gland to compress tightly the pin, and finally utilizes lock nut to fix, and lock nut strengthens the locking effect through the flat key, prevents not hard up. The structure realizes radial and axial positioning of the screw in the flywheel shaft and ensures coaxiality of the screw and the flywheel shaft. The annular gland and the lock nut can be used for adjusting the gap between the thrust bearing and the screw rod, guaranteeing the rotation synchronism of the screw rod and the flywheel shaft, and further enhancing the unbalanced load resistance of the press.
4. The utility model has the advantages of convenient operation and maintenance, high control precision of striking force, good product forming precision, high production efficiency and good energy-saving effect, adopts the switch reluctance direct drive motor to drive, has low speed and large torque, does not bear a bearing, does not bear radial force and axial force, has no problem of cracking of an inorganic seat, and is suitable for the forward and reverse starting requirements of a screw press.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is an enlarged view of section I of FIG. 1;
Fig. 3 is an enlarged view of section II in fig. 1.
In the figure: 1. a direct drive motor, 2, a motor rotor, 3, an external flange, 4, a horizontal flange, 5, a press body, 6, a lock nut, 7, an annular gland, 8, a hollow vertical shaft, 9, a second half surrounding an axial blind hole, 10, a first half surrounding an axial blind hole, 11, a bearing mounting groove, 12, a thrust bearing, 13, a shaft sleeve, 14, a screw, 15, an annular circular truncated cone, 16, a thrust bearing, 17, a thrust bearing seat, 18, a oil retainer, 19, an inner groove, 20, a compensation spring, 21, an annular truncated cone, 22, a press ring, 23, a mandrel, 24, a flat key, 25, and a set screw.
Detailed Description
The utility model will be described in detail with reference to the drawings.
As shown in fig. 1 to 3, the transmission structure of the direct-drive electric screw press comprises a direct-drive motor 1, a flywheel shaft and a screw 14, wherein the direct-drive motor 1 is fixed on the top of a press machine body 5. The direct drive motor 1 adopts a switched reluctance direct drive motor.
The flywheel shaft consists of a hollow vertical shaft 8 and a horizontal flange 4 arranged on the periphery of the hollow vertical shaft 8, the motor rotor 2 of the direct-drive motor 1 is provided with an external flange 3, and the horizontal flange 4 of the flywheel shaft is overlapped with the central line of the external flange 3 and is fixedly connected. The press machine body 5 is internally provided with a bearing mounting groove 11, a thrust bearing 12 is arranged between the bottom of the bearing mounting groove 11 and the lower end of the hollow vertical shaft 8 of the flywheel shaft, and a clearance compensation component is arranged between the upper end surface of the thrust bearing 12 and the lower end surface of the hollow vertical shaft 8. The center of the bottom of the bearing mounting groove 11 is provided with a through hole, the fixed part of the screw 14 sequentially penetrates through the through hole and the hollow vertical shaft 8 and is fixedly connected with the hollow vertical shaft 8, the periphery of the lower end of the through hole is fixedly provided with a thrust bearing seat 17 concentric with the through hole, the position of the screw 14 below the through hole is provided with an annular round platform 15, and the upper surface of the annular round platform 15 is provided with a thrust bearing 16 matched with the thrust bearing seat 17. A shaft sleeve 13 is arranged between the through hole of the bearing mounting groove 11 and the screw 14.
In this embodiment, the upper end of the fixing portion of the screw 14 is provided with an external thread and leads out the upper end of the hollow vertical shaft 8, the upper end of the inner wall of the hollow vertical shaft 8 is uniformly provided with a plurality of first half-enclosed axial blind holes 10, the outer wall of the screw 14 is provided with second half-enclosed axial blind holes 9 corresponding to the first half-enclosed axial blind holes 10 one by one, and the second half-enclosed axial blind holes 9 and the corresponding first half-enclosed axial blind holes 10 are buckled to form pin positioning holes. The pin is inserted into the pin positioning hole and is pressed by the annular gland 7, the flanging of the annular gland 7 is fixedly connected with the upper end face of the hollow vertical shaft 8, the fixing part of the screw 14 is connected with the lock nut 6 by external threads, and the lower end face of the lock nut 6 is tightly connected with the upper end face of the annular gland 7. The upper end of the lock nut 6 is connected with the upper end of the screw 14 by a flat key 24, and a positioning screw 25 connected with the lock nut 6 is arranged on the flat key 24.
The lower end face of the hollow vertical shaft 8 is provided with a spigot corresponding to the thrust bearing 12, and the horizontal plane of the spigot is uniformly provided with a plurality of inner grooves 19. The clearance compensation assembly comprises a compensation spring 20 arranged in the inner groove 19, a mandrel 23 connected with the compensation spring 20 and a pressing ring 22 arranged at the notch position of the inner groove, wherein an annular table 21 is arranged on the periphery of the mandrel 23, the compensation spring 20 is clamped between the annular table 21 and the groove bottom of the inner groove 19, an avoidance hole is formed in the center of the pressing ring 22, and the lower end of the mandrel 23 passes through the avoidance hole and then is pressed against the upper end face of the thrust bearing 12, so that the clearance between the thrust bearing 12 and the flywheel shaft is adjusted.
The outer peripheral surface of the annular round table 15 on the screw 14 is connected with an oil retainer 18, and the upper end of the oil retainer 18 extends to a position above the contact surface of the thrust bearing 17 and the thrust bearing 16.
Working principle:
The switch reluctance direct-drive motor is started, the rotating speed of the motor rotor 2 is adjusted according to the striking force requirement, the flywheel shaft and the screw 14 are driven to synchronously rotate, and the screw 14 drives the sliding block to ascend or descend through the screw pair, so that forging and pressing operation is realized.
The foregoing describes the embodiments of the present utility model in detail, but the description is only a preferred embodiment of the present utility model and should not be construed as limiting the scope of the utility model. All equivalent changes and modifications within the scope of the present utility model are intended to fall within the scope of the present utility model.
Claims (6)
1. The utility model provides a directly drive electronic screw press transmission structure, includes directly drives motor, flywheel shaft and screw rod, directly drives the motor and is fixed in press top, its characterized in that: the flywheel shaft consists of a hollow vertical shaft and a horizontal flange plate arranged on the periphery of the hollow vertical shaft, a motor rotor of the direct-drive motor is provided with an external flange, the horizontal flange plate of the flywheel shaft is overlapped with the central line of the external flange and fixedly connected with the central line of the external flange, a bearing mounting groove is arranged in the machine body of the press machine, a thrust bearing is arranged between the bottom of the bearing mounting groove and the lower end of the hollow vertical shaft of the flywheel shaft, a gap compensation component is arranged between the upper end face of the thrust bearing and the lower end face of the hollow vertical shaft, a through hole is arranged at the center of the bottom of the bearing mounting groove, a fixing part of a screw rod sequentially penetrates through the through hole and the hollow vertical shaft and is fixedly connected with the hollow vertical shaft, a thrust bearing seat concentric with the through hole is fixedly arranged on the periphery of the lower end of the through hole, and an annular round table is arranged at the position below the through hole and provided with a thrust bearing matched with the thrust bearing seat.
2. The direct drive electric screw press transmission structure according to claim 1, wherein: the upper end of the fixed part of the screw is provided with external threads and leads out the upper end of the hollow vertical shaft, the upper end of the inner wall of the hollow vertical shaft is uniformly provided with a plurality of first semi-enclosed axial blind holes, the outer wall of the screw is provided with second semi-enclosed axial blind holes corresponding to the first semi-enclosed axial blind holes one by one, the second semi-enclosed axial blind holes and the corresponding first semi-enclosed axial blind holes are buckled to form pin positioning holes, pins are inserted into the pin positioning holes and are pressed by using annular gland, the flanging of the annular gland is fixedly connected with the upper end face of the hollow vertical shaft, the fixed part of the screw is connected with a locking nut by using external threads, the lower end face of the locking nut is tightly connected with the upper end face of the annular gland, the upper end of the locking nut is connected with the upper end of the screw by using a flat key, and a positioning screw connected with the locking nut is additionally arranged on the flat key.
3. The direct drive electric screw press transmission structure according to claim 1, wherein: the lower end face of the hollow vertical shaft is provided with a spigot corresponding to the thrust bearing, the horizontal plane of the spigot is uniformly provided with a plurality of inner grooves, the gap compensation assembly comprises a compensation spring arranged in the inner grooves, a mandrel connected with the compensation spring and a pressing ring arranged at the notch position of the inner grooves, an annular table is arranged on the periphery of the mandrel, the compensation spring is clamped between the annular table and the groove bottom of the inner grooves, an avoidance hole is formed in the center of the pressing ring, and the lower end of the mandrel passes through the avoidance hole and then is propped against the upper end face of the thrust bearing.
4. The direct drive electric screw press transmission structure according to claim 1, wherein: the outer peripheral surface of the annular round table on the screw rod is connected with an oil retainer, and the upper end of the oil retainer extends to a position above the contact surface of the thrust bearing seat and the thrust bearing.
5. The direct drive electric screw press transmission structure according to claim 1, wherein: and a shaft sleeve is arranged between the through hole of the bearing mounting groove and the screw rod.
6. The direct drive electric screw press transmission structure according to claim 1, wherein: the direct-drive motor adopts a switch reluctance direct-drive motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322445544.6U CN220946806U (en) | 2023-09-09 | 2023-09-09 | Transmission structure of direct-drive electric screw press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322445544.6U CN220946806U (en) | 2023-09-09 | 2023-09-09 | Transmission structure of direct-drive electric screw press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220946806U true CN220946806U (en) | 2024-05-14 |
Family
ID=91022248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322445544.6U Active CN220946806U (en) | 2023-09-09 | 2023-09-09 | Transmission structure of direct-drive electric screw press |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220946806U (en) |
-
2023
- 2023-09-09 CN CN202322445544.6U patent/CN220946806U/en active Active
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