CN220316274U - Screw rod adjusting type main transmission chain tensioning device - Google Patents
Screw rod adjusting type main transmission chain tensioning device Download PDFInfo
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- CN220316274U CN220316274U CN202322039791.6U CN202322039791U CN220316274U CN 220316274 U CN220316274 U CN 220316274U CN 202322039791 U CN202322039791 U CN 202322039791U CN 220316274 U CN220316274 U CN 220316274U
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- 238000009434 installation Methods 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Abstract
The utility model discloses a screw rod adjusting type main transmission chain tensioning device, relates to the technical field of conveying equipment, and aims to solve the hidden trouble of chain tensioning when a chain is tensioned, and the technical scheme is as follows: the screw rod adjusting type main transmission chain tensioning device comprises a chain wheel assembly and a screw rod assembly, wherein the chain wheel assembly comprises a rectangular sleeve, a telescopic arm which is connected with the rectangular sleeve in a telescopic manner, and a chain wheel which is arranged at the front end of the telescopic arm; the screw rod assembly comprises a screw rod seat, a screw rod which is connected with the screw rod seat in a telescopic manner, and an adjusting screw sleeve which is connected with the screw rod in a threaded manner; and an extension spring is arranged between the rear end of the telescopic arm and the front end of the screw rod. According to the screw rod adjusting type main transmission chain tensioning device, the hidden danger of tensioning of the screw rod adjusting type main transmission chain is reduced through the flexible connection chain on the premise that the screw rod adjusting type main transmission chain tensioning device is provided with the chain tensioning force adjusting function and is prevented from being loosened.
Description
Technical Field
The utility model relates to the technical field of conveying equipment, in particular to a screw rod adjusting type main transmission chain tensioning device.
Background
The chain is an important transmission structure, one end of the chain is connected with a chain wheel of a power source in conventional arrangement, and the other end of the chain is connected with the chain wheel of the equipment.
Regarding the equipment driven by the chain, the applicant applies for a main power mechanism of a rotating hub for a stereoscopic screw conveying equipment, which is disclosed in Chinese patent publication No. CN217755299U, and has the technical points that: the conveying device comprises two spiral conveying towers and a conveying frame positioned on one side of the two spiral conveying towers, and further comprises a conveying mesh belt which is transmitted between the two spiral conveying towers and the conveying frame, wherein a main power mechanism is arranged in the spiral conveying towers and comprises a base arranged at the center of the circle of the spiral conveying towers, the surface of the base is rotationally connected with a rotating shaft, a driving frame is arranged on the rotating shaft, and the outer side of the circumference of the driving frame is abutted to the side edge of the conveying mesh belt and further comprises a driving assembly used for driving the rotating shaft.
The technical scheme discovers in actual operation that the hidden danger of uncoordinated rotating speeds of the two spiral conveying towers caused by loose chains exists because the length of the chains is far longer than that of the conventional use.
In order to solve the problem of chain loosening, the applicant designs and adds a tensioning device, and finds out after searching about the tensioning device, a chain tensioning device of Chinese patent publication with the publication number of CN205908701U, which has the technical key points that: including stopper, lead screw and take-up pulley, the stopper is established on chain drive's organism, and open at the stopper middle part has the lead screw hole, the lead screw passes the stopper to constitute the lead screw with the lead screw hole of stopper and be vice, the lead screw left end is equipped with the hand wheel, and the lead screw right-hand member is equipped with the U-shaped yoke, it has the shaft hole to open to the U-shaped yoke right-hand member, be equipped with the pivot in the shaft hole, the center of take-up pulley is opened there is the centre bore, the take-up pulley is located in the U-shaped yoke, the pivot passes the centre bore of take-up pulley and makes take-up pulley and U-shaped yoke connect, pivot and U-shaped yoke between the shaft hole be equipped with antifriction bearing.
The technical scheme solves the problem of chain loosening, but the tension of the chain is rigid, and when the chain is applied to equipment which needs larger torque transmission such as a spiral conveying tower, the hidden danger of chain breaking exists; there is therefore a need to propose a new solution to this problem.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model aims to provide the screw rod adjusting type main transmission chain tensioning device, which reduces the hidden trouble of tensioning through a flexible connection chain on the premise of adjusting the tensioning force of the chain to prevent the chain from loosening.
The technical aim of the utility model is realized by the following technical scheme: the screw rod adjusting type main transmission chain tensioning device comprises a chain wheel assembly and a screw rod assembly, wherein the chain wheel assembly comprises a rectangular sleeve, a telescopic arm which is connected with the rectangular sleeve in a telescopic manner, and a chain wheel which is arranged at the front end of the telescopic arm; the screw rod assembly comprises a screw rod seat, a screw rod which is connected with the screw rod seat in a telescopic manner, and an adjusting screw sleeve which is connected with the screw rod in a threaded manner; and an extension spring is arranged between the rear end of the telescopic arm and the front end of the screw rod.
By adopting the technical scheme, the chain wheel assembly realizes floating installation of the chain wheel through the rectangular sleeve and the telescopic arm, and when in actual use, the two ends of the telescopic arm are respectively tensioned by the chain and the tension spring to achieve stress balance, so that flexible tensioning of the chain is realized, and compared with rigid tensioning in the prior art, the hidden danger of chain tensioning is effectively reduced; the screw rod assembly adjusts the stretching length of the stretching spring through the matching of the adjusting screw sleeve and the screw rod, so that the elastic potential energy of the stretching spring is adjusted, and the tensioning force of the chain is adjusted; to sum up, this application is possessing chain tensioning force and is adjusted under the prerequisite that prevents that it from taking place to relax, reduces its hidden danger of stretching out and drawing back through flexible connection chain.
The utility model is further provided with: the rear end of flexible arm is provided with the spacing edge of stretching forward, the spacing edge of stretching forward and the rear end butt cooperation of rectangle sleeve.
The utility model is further provided with: the telescopic arm is provided with a vertical shaft, and a ball bearing is arranged between the vertical shaft and the chain wheel.
The utility model is further provided with: the screw rod seat is provided with first vertical board and the vertical board of second, the through-hole has been seted up in first vertical board penetration, the vertical board of second is provided with limited commentaries on classics clamp groove, the screw rod includes screw thread section and square pole section, the screw thread section slides and pegs graft in the through-hole, square pole section gomphosis is in limiting to change clamp groove.
The utility model is further provided with: the adjusting screw sleeve is sleeved with a hand-twisting rotary disc.
The utility model is further provided with: the screw rod seat is fixedly provided with a driving motor, and a gear set is arranged between the driving motor and the adjusting screw sleeve for transmission.
The utility model is further provided with: the telescopic arm is characterized in that lantern rings are respectively arranged at two ends of the extension spring, clamping openings are respectively arranged at opposite ends of the telescopic arm and the wire lever, connecting bolts penetrate through the clamping openings, connecting nuts are in threaded fit with the connecting bolts, and the lantern rings are embedded in the clamping openings and are sleeved with the connecting bolts.
In summary, the utility model has the following beneficial effects: the hidden trouble of tensioning of the chain is reduced by flexibly connecting the chain on the premise of adjusting the tensioning force of the chain to prevent the chain from loosening; limiting the limiting extending distance of the telescopic arm through the abutting fit of the extending limiting edge and the rectangular sleeve, so that the chain is effectively prevented from being separated; the rotation activity degree of the screw lever is eliminated through the cooperation between the square rod section and the rotation limiting clamping groove, so that the screw thread section and the adjusting screw sleeve are ensured to cooperate to generate screw thread propelling force; when the extension spring is replaced or assembled, the connecting bolt is screwed in or out of the connecting nut, so that convenience in assembling or replacing the extension spring is effectively improved.
Drawings
FIG. 1 is a schematic overall structure of a first embodiment;
FIG. 2 is a diagram showing the relationship between the chain and the first embodiment;
FIG. 3 is a schematic overall structure of another view of the embodiment;
FIG. 4 is a schematic view of a sprocket assembly according to an embodiment, the sprocket assembly being exploded to facilitate representation of the same;
fig. 5 is a schematic overall structure of the second embodiment.
Description of the drawings: 1. a rectangular sleeve; 2. a telescoping arm; 3. a sprocket; 4. a screw rod seat; 5. a wire lever; 6. adjusting the screw sleeve; 7. a tension spring; 8. a forward extending limit edge; 9. a vertical shaft; 10. a ball bearing; 11. a first vertical plate; 12. a second vertical plate; 13. a through hole; 14. a rotation limiting clamping groove; 15. a threaded section; 16. a square pole segment; 17. twisting the turntable by hand; 18. a driving motor; 19. a gear set; 20. a collar; 21. a clamping opening; 22. a connecting bolt; 23. and (5) connecting a nut.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings.
The screw rod adjusting type main transmission chain tensioning device comprises a chain wheel assembly and a screw rod assembly, wherein the chain wheel assembly comprises a rectangular sleeve 1 fixedly installed through a stand column, a telescopic arm 2 connected with the rectangular sleeve 1 in a telescopic manner, and a chain wheel 3 rotatably installed at the front end of the telescopic arm 2; the screw assembly comprises a screw seat 4, a screw rod 5 which is connected with the screw seat 4 in a telescopic manner, and an adjusting screw sleeve 6 which is connected with the screw rod 5 in a threaded manner, wherein the adjusting screw sleeve 6 is in abutting fit with one surface of the screw seat 4, which is opposite to the rectangular sleeve 1; an extension spring 7 is arranged between the rear end of the telescopic arm 2 and the front end of the screw rod 5.
As shown in fig. 2, the sprocket assembly realizes floating installation of the sprocket 3 through the rectangular sleeve 1 and the telescopic arm 2, and when in actual use, the two ends of the telescopic arm 2 are respectively tensioned by the chain and the tension spring 7 to achieve stress balance, so that flexible tensioning of the chain is realized, and compared with rigid tensioning in the prior art, the hidden danger of chain tensioning is effectively reduced; the screw rod assembly adjusts the stretching length of the stretching spring 7 through the matching of the adjusting screw sleeve 6 and the screw rod 5, so that the elastic potential energy of the stretching spring 7 is adjusted, and the tensioning force of the chain is adjusted; to sum up, this application is possessing chain tensioning force and is adjusted under the prerequisite that prevents that it from taking place to relax, reduces its hidden danger of stretching out and drawing back through flexible connection chain.
In order to prevent the occurrence of chain disengagement caused by excessive forward extension of the telescopic arm 2 due to fatigue or stretch-out of the extension spring 7, as shown in fig. 1, the rear end of the telescopic arm 2 is formed with a forward extension limiting edge 8, and the forward extension limiting edge 8 is in abutting fit with the rear end of the rectangular sleeve 1; therefore, the limiting forward extending distance of the telescopic arm 2 is limited through the abutting fit of the forward extending limiting edge 8 and the rectangular sleeve 1, and the chain is effectively prevented from being separated.
The sprocket 3 is rotatably mounted at the front end of the telescopic arm 2 in such a manner that, as shown in fig. 4, the telescopic arm 2 is inserted and welded with a vertical shaft 9, and a ball bearing 10 is provided between the vertical shaft 9 and the sprocket 3, thereby ensuring the smoothness of rotation of the sprocket 3.
The screw lever 5 is telescopically connected to the screw rod seat 4 in a manner that, as shown in fig. 1 and 3, the screw rod seat 4 is fixedly welded with a first vertical plate 11 and a second vertical plate 12, the first vertical plate 12 is provided with a through hole 13 in a penetrating way, the second vertical plate 12 is processed and molded into a limited rotation clamping groove 14, the screw rod 5 comprises a threaded section 15 and a square rod section 16, the threaded section 15 is slidingly inserted into the through hole 13, and the square rod section 16 is embedded into the limited rotation clamping groove 14; the screw lever 5 is in plug-in fit with the through hole 13 through the thread section 15, so that the technical requirement of telescopic connection to the screw rod seat 4 is met, and the rotation activity degree of the screw lever 5 is eliminated through the fit between the square rod section 16 and the rotation limiting clamping groove 14, so that the thread section 15 and the adjusting screw sleeve 6 are matched to generate thread propelling force.
The extension spring 7 is connected with the extension arm 2 and the screw rod 5 in a manner that, as shown in fig. 1 and 3, two ends of the extension spring 7 are respectively bent to form lantern rings 20, two opposite ends of the extension arm 2 and the screw rod 5 are respectively provided with a clamping opening 21, the clamping opening 21 is penetrated with a connecting bolt 22, the connecting bolt 22 is in threaded fit with a connecting nut 23, and the lantern rings 20 are embedded in the clamping opening 21 and are sleeved with the connecting bolt 22; the end part of the extension spring 7 is provided with a lantern ring 20 which is sleeved on a connecting bolt 22 and is embedded in a clamping opening 21, so that the connection stability between the end part of the extension spring 7 and the telescopic arm 2 or the wire lever 5 is ensured; when the extension spring 7 is replaced or assembled, the connecting bolt 22 is screwed into or out of the connecting nut 23, so that convenience in assembling or replacing the extension spring 7 is effectively improved.
In order to facilitate the rotation of the adjusting screw sleeve 6, as shown in fig. 1 and 3, the adjusting screw sleeve 6 is sleeved with a hand-twisting rotary disc 17, so that a force application point for rotating the adjusting screw sleeve 6 is provided by the hand-twisting rotary disc 17, and the adjusting screw sleeve has the technical effects of simple structure and convenience in operation.
Embodiment two: the difference between the present embodiment and the first embodiment is that the adjusting screw sleeve 6 is rotated in an electric control manner, as shown in fig. 5, the screw rod seat 4 is fixedly provided with a driving motor 18, a gear set 19 is arranged between the driving motor 18 and the adjusting screw sleeve 6 for transmission, and thus the adjusting screw sleeve 6 is driven after the torque output by the driving motor 18 is transmitted by the gear set 19.
In actual use, a tension sensor may be provided between the tension spring 7 and the screw rod 5 or between the tension spring 7 and the telescopic arm 2, and the PLC program may be connected to control the driving motor 18 by an electrical signal.
The present utility model is not limited by the specific embodiments, and modifications can be made to the embodiments without creative contribution by those skilled in the art after reading the present specification, but are protected by patent laws within the scope of claims of the present utility model.
Claims (7)
1. The utility model provides a lead screw regulation formula main drive chain overspeed device tensioner, includes sprocket assembly and lead screw assembly, its characterized in that:
the chain wheel assembly comprises a rectangular sleeve (1), a telescopic arm (2) which is connected with the rectangular sleeve (1) in a telescopic manner, and a chain wheel (3) which is arranged at the front end of the telescopic arm (2);
the screw assembly comprises a screw seat (4), a screw rod (5) which is connected with the screw seat (4) in a telescopic manner, and an adjusting screw sleeve (6) which is connected with the screw rod (5) in a threaded manner;
an extension spring (7) is arranged between the rear end of the telescopic arm (2) and the front end of the screw rod (5).
2. A lead screw adjustable main drive chain tensioner as set forth in claim 1, wherein: the rear end of the telescopic arm (2) is provided with a forward extending limiting edge (8), and the forward extending limiting edge (8) is in butt fit with the rear end of the rectangular sleeve (1).
3. A lead screw adjustable main drive chain tensioner as set forth in claim 1, wherein: the telescopic arm (2) is provided with a vertical shaft (9), and a ball bearing (10) is arranged between the vertical shaft (9) and the chain wheel (3).
4. A lead screw adjustable main drive chain tensioner as set forth in claim 1, wherein: the screw rod seat (4) is provided with a first vertical plate (11) and a second vertical plate (12), a through hole (13) is formed in the first vertical plate (11) in a penetrating mode, a limited rotating clamping groove (14) is formed in the second vertical plate (12), the screw rod (5) comprises a threaded section (15) and a square rod section (16), the threaded section (15) is connected to the through hole (13) in a sliding mode, and the square rod section (16) is embedded in the limited rotating clamping groove (14).
5. A lead screw adjustable main drive chain tensioner as set forth in claim 1, wherein: the adjusting screw sleeve (6) is sleeved with a hand-twisting rotary disc (17).
6. A lead screw adjustable main drive chain tensioner as set forth in claim 1, wherein: the screw rod seat (4) is fixedly provided with a driving motor (18), and a gear set (19) is arranged between the driving motor (18) and the adjusting screw sleeve (6) for transmission.
7. A lead screw adjustable main drive chain tensioner as set forth in claim 1, wherein: the telescopic device is characterized in that lantern rings (20) are respectively arranged at two ends of the tension spring (7), clamping ports (21) are respectively arranged at opposite ends of the telescopic arm (2) and the screw rod (5), connecting bolts (22) are arranged in a penetrating mode through the clamping ports (21), connecting nuts (23) are in threaded fit with the connecting bolts (22), and the lantern rings (20) are embedded in the clamping ports (21) and are sleeved with the connecting bolts (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322039791.6U CN220316274U (en) | 2023-07-31 | 2023-07-31 | Screw rod adjusting type main transmission chain tensioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322039791.6U CN220316274U (en) | 2023-07-31 | 2023-07-31 | Screw rod adjusting type main transmission chain tensioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220316274U true CN220316274U (en) | 2024-01-09 |
Family
ID=89421910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322039791.6U Active CN220316274U (en) | 2023-07-31 | 2023-07-31 | Screw rod adjusting type main transmission chain tensioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220316274U (en) |
-
2023
- 2023-07-31 CN CN202322039791.6U patent/CN220316274U/en active Active
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