CN110936311A - Positioning device for guide cylinder of fan - Google Patents
Positioning device for guide cylinder of fan Download PDFInfo
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- CN110936311A CN110936311A CN201911418660.0A CN201911418660A CN110936311A CN 110936311 A CN110936311 A CN 110936311A CN 201911418660 A CN201911418660 A CN 201911418660A CN 110936311 A CN110936311 A CN 110936311A
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- adjusting mechanism
- tensioning
- diameter adjusting
- bottom plate
- screw rod
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a positioning device for a fan draft tube, which comprises a main shaft part and a table top bottom plate, wherein the main shaft part comprises a main shaft, and the upper end of the main shaft is fixedly connected with the center of the table top bottom plate through a connecting sleeve; the upper surface of the table board bottom plate is provided with N mounting holes, and all the mounting holes are uniformly distributed around the center of the table board bottom plate and are in a radial extension shape; the outer side of each mounting hole is correspondingly provided with a tensioning arc, and extension lines of adjacent tensioning arcs are connected to enclose a tensioning ring; the table board bottom plate is provided with a diameter adjusting mechanism at the position of the mounting hole; the diameter adjusting mechanism comprises a mounting frame and a first motor, wherein the mounting frame is mounted at the position of the mounting hole and is in matched connection with the corresponding tensioning arc; the first motor drives the mounting frame to slide back and forth along the mounting hole, so that the inner diameter of the tensioning ring is changed.
Description
Technical Field
The invention relates to the technical field of fans, in particular to a positioning device for a fan guide cylinder.
Background
In order to improve the performance of the fan, such as air volume, air pressure, shaft power, noise and vibration, it is one of the most common methods to install a flow guiding device in front of the air inlet of the impeller to change the direction of the air flow. The most commonly used flow guide device is a flow guide cylinder which is cylindrical and generally comprises an inner cylinder, an outer cylinder and a flow guide plate, and a fan flow guide cylinder and a top plate are welded together to form a fan mounting plate in the prior art so as to solve the problems that the fan top plate cannot be integrally stretched and is inconvenient to mount. The existing process is that positioning holes are punched on a guide cylinder and a top plate, then the guide cylinder and the top plate are connected through bolts, and then the positioning holes are subjected to repair welding. The scheme results in low concentricity of the top plate and the guide shell, large product deformation and low efficiency. Some guide cylinders need to be processed with hole sites, the existing scheme is to manufacture a positioning drill bushing, the concentricity is positioned by a plurality of positioning columns on the drill bushing, if the circumferential size of the positioning columns is small, the guide cylinders are not suitable to be placed in the guide cylinders due to the roundness problem of the guide cylinders, and if the clearance is large, the coaxiality of the hole sites and the cylinder body after processing cannot be guaranteed.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the guide shell pressing mechanism which is convenient and stable to connect and can reduce the deformation of the guide shell.
The technical scheme of the invention is as follows: a positioning device for a fan draft tube comprises a main shaft part and a table top bottom plate, wherein the main shaft part comprises a main shaft, and the upper end of the main shaft is fixedly connected with the center of the table top bottom plate through a connecting sleeve; the upper surface of the table board bottom plate is provided with N mounting holes, and all the mounting holes are uniformly distributed around the center of the table board bottom plate and are in a radial extension shape; the outer side of each mounting hole is correspondingly provided with a tensioning arc, and extension lines of adjacent tensioning arcs are connected to enclose a tensioning ring; the table board bottom plate is provided with a diameter adjusting mechanism at the position of the mounting hole; the diameter adjusting mechanism comprises a mounting frame and a first motor, wherein the mounting frame is mounted at the position of the mounting hole and is in matched connection with the corresponding tensioning arc; the first motor drives the mounting frame to slide back and forth along the mounting hole, so that the inner diameter of the tensioning ring is changed.
Furthermore, a large bevel gear is sleeved on the main shaft; the mounting frame comprises a diameter adjusting mechanism upper top plate, two diameter adjusting mechanism side plates and a diameter adjusting mechanism lower bottom plate, wherein the two diameter adjusting mechanism side plates are respectively abutted against the front end and the rear end of the mounting hole; a tensioning arc mounting seat is mounted on an upper top plate of the diameter adjusting mechanism, the lower portion of the tensioning arc mounting seat is connected with the upper top plate of the diameter adjusting mechanism in a sliding mode, and the side face of the tensioning arc mounting seat is connected with the inner side of the tensioning arc in a matched mode; the lower end of the tensioning arc mounting seat is provided with a screw rod mounting seat and a screw rod, and the screw rod sequentially penetrates through the screw rod mounting seat and a diameter adjusting mechanism side plate close to the inner side and is supported between the main shaft and the diameter adjusting mechanism side plate close to the outer side; the screw rod mounting seat is connected with the lower bottom plate of the tensioning diameter-adjusting mechanism in a sliding manner; the end part of the screw rod is connected with a small bevel gear; the large bevel gear is meshed with all the small bevel gears, the first motor drives one of the small bevel gears to rotate, the small bevel gear drives other small bevel gears to rotate under the transmission action of the large bevel gear, and the screw rod mounting seat is driven to slide back and forth on the screw rod under the transmission action of the small bevel gear, so that the tensioning arc mounting seat is driven to move back and forth along the lower bottom plate of the tensioning diameter adjusting mechanism, and the inner diameter of the tensioning ring is changed.
Furthermore, the end part of the top plate on each diameter adjusting mechanism is provided with a resisting block; the center of the table board bottom board is provided with a tensioning power disc, the tensioning power disc comprises a circular power disc upper top board, a cylindrical base extends downwards from the middle of the power disc upper top board, N active oblique wedges are arranged on the periphery of the cylindrical base, and the active oblique wedges are abutted to corresponding abutting blocks.
Furthermore, the end part of the screw rod penetrates through the side plate of the diameter adjusting mechanism close to the inner side and then penetrates through a screw rod bearing seat to be connected with the small bevel gear, and a tension spring is arranged between the screw rod bearing seat and the side plate of the diameter adjusting mechanism close to the inner side.
Furthermore, a small conical gear bearing seat is sleeved on the main shaft and is positioned below the table board bottom plate; the upper end of the screw rod bearing seat is abutted against the lower surface of the small conical gear bearing seat through a small conical gear bearing seat mounting base plate.
Furthermore, gaps between the upper top plates of the adjacent diameter adjusting mechanisms are filled with equal-height table tops, and the equal-height table tops are fixedly supported on the table top bottom plate through connecting columns; the upper surface of the equal-height table top is flush with the upper surface of the upper bottom plate of the diameter adjusting mechanism.
Furthermore, the spindle part further comprises a rotating oil cylinder, the rotating oil cylinder is located at the bottom of the spindle, and an output shaft of the rotating oil cylinder is coaxial with the spindle and drives the spindle to rotate.
Further, the spindle unit further comprises a gear, a transmission gear and a second motor; the gear is positioned below the large bevel gear and sleeved on the main shaft; the transmission gear is positioned on one side of the gear and meshed with the gear; the second motor drives the transmission gear to rotate to drive the gear to rotate.
Furthermore, 6 diameter adjusting mechanisms are distributed on the bottom plate of the table board.
Further, the first motor is a stepping or servo motor; the second motor is a stepping or servo motor.
The invention has the beneficial effects that:
(1) the tight circle that rises connects and compresses tightly the draft tube, has avoided operations such as punching a hole, welding, has avoided the damage of draft tube, through changing the internal diameter size of the tight circle that rises that 6 tight arcs enclose, realizes the purpose of draft tube perisporium diameter regulation, and 6 tight arcs that rise symmetry sets up, the draft tube of fully laminating for the draft tube inner wall atress is even, and tight effort evenly distributed that rises realizes the purpose of draft tube perisporium diameter regulation, guarantees the circularity of draft tube.
(2) The step rhythm of the diameter adjusting mechanism is controlled by the cooperation of the transmission gear and the gear.
(3) An output shaft of the rotary oil cylinder drives the tension power disc to rise, the active inclined wedge releases the abutting block, and the tension spring drives the whole diameter adjusting mechanism and the tension arc to move inwards towards the outside of the circumference to realize the release of the tension arc.
(4) The diameter adjusting mechanism is combined with the small bevel gear through the large bevel gear, and can simultaneously adjust from multiple directions, so that the roundness of the connecting piece can be further ensured.
(5) When the tensioning action is operated, the tensioning force is always, if the motor is used for tensioning by only the motor, the motor is easy to block, the motor is easy to damage, if the oil cylinder is used for tensioning by only the oil cylinder, the tensioning range is small, and if the oil cylinder is used for enlarging the adjusting range through the rod mechanism, the axial operating range of the tensioning mechanism is large, so that the tensioning action is realized by the motor and the oil cylinder.
Drawings
FIG. 1: the invention discloses a structural schematic diagram of a positioning device of a fan guide cylinder;
FIG. 2: the invention relates to a structural schematic diagram of a positioning device of a fan guide cylinder (partial components are hidden);
FIG. 3: the invention discloses a structural schematic diagram of a diameter adjusting mechanism;
FIG. 4: the diameter adjusting mechanism is in a split structure schematic diagram;
FIG. 5: the structure of the tension power disc is shown schematically;
FIG. 6: the structure of the main shaft component is shown schematically;
in the figure: 1-tensioning power disc; 101-a top plate on the power disc; 102-initiative inclined wedge; 103-a base; 2-diameter adjusting mechanism; 201-a tension ring mounting seat; 202-diameter adjusting mechanism upper top plate; 203-diameter adjusting mechanism side plate; 204-a lower bottom plate of the diameter adjusting mechanism; 205-a screw rod; 206-a bearing; 207-lead screw mounting seat; 208-an internal spline fixation sleeve; 209-spline slide rail; 210-an internally splined sliding sleeve; 211-small bevel gear; 212-screw bearing seats; 213-a cancel block; 214-tension spring; 215-a second runner; 216-a second slide rail; 217-a second runner; 218-foreign matter prevention barrier; 3-tensioning ring; 4-equal height table top; 5-a table board bottom board; 501-a second slide rail 6-an extension rod; 7-fixing the nut; 8-a first motor; 9-a second motor; 10-a base table; 11-a rotary oil cylinder; 12-a connecting sleeve; 13-main shaft bearing seat; 14-a spindle unit; 1401-a main shaft; 1402/1403/1405/1406-position adjusting nut; 1404-large bevel gear; 1407-an electric brush; 1408-gear; 1409-end face bearing; 1410-thrust bearing.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described below with reference to the accompanying drawings, but the present invention is not limited thereto in any way, and any changes or modifications based on the teaching of the present invention are within the protection scope of the present invention.
Example one
As shown in fig. 1-6, a positioning device for a blower draft tube mainly comprises a main shaft part 14 and a table-board bottom board 5, wherein the main shaft part 14 comprises a main shaft 1401, and the upper end of the main shaft 1401 is fixedly connected with the table-board bottom board 5 through a connecting sleeve 12. The table board bottom plate 5 is a circular plate, 6 mounting holes are formed in the upper surface of the circular plate, the mounting holes extend radially and are evenly distributed around the circle center of the table board bottom plate 5, a tensioning arc 3 is correspondingly arranged on the outer side of each mounting hole, all the tensioning arcs 3 are circular around the tensioning arc, and extension lines of adjacent tensioning arcs are connected to form a tensioning ring. The diameter adjusting mechanism 2 is arranged at the position of the mounting hole on the table board bottom plate 5, and the diameter adjusting mechanism 2 is connected with the tensioning arc 3 in a matched mode. The tensioning arc 3 is arc-shaped, a lug is arranged on the inner wall of the tensioning arc, and the lug is matched with the clamping groove to complete the connection between the tensioning arc 3 and the tensioning arc mounting seat 201.
The diameter adjusting mechanism 2 comprises 6 installation frames and 1 first motor 8, wherein the installation frames are composed of an upper diameter adjusting mechanism top plate 202, two diameter adjusting mechanism side plates 203 which are respectively abutted against the front end and the rear end of the installation hole, and a lower diameter adjusting mechanism bottom plate 204. The upper top plates 202 of the diameter adjusting mechanisms are arranged above the table board bottom plate 5, gaps between the upper top plates 202 of the adjacent diameter adjusting mechanisms are filled with the equal-height table boards 4, and the equal-height table boards 4 are fixedly supported on the table board bottom plate 5 through connecting columns. The inner side of the equal-height table top 4 is arc-shaped, and the outer side is also arc-shaped. The upper surface of the equal-height table top 4 is flush with the upper surface of the diameter adjusting mechanism upper bottom plate 202. The equal-height table top is used for ensuring that the bottom edge of the workpiece can be placed smoothly, ensuring that the bottom edge of the workpiece can be stressed when the air duct is machined, and ensuring that the workpiece does not deform.
In each mounting frame, a strip-shaped hole extending inside and outside is formed in the upper top plate 202 of the diameter adjusting mechanism, a strip-shaped foreign matter preventing baffle 218 is installed in the middle of the strip-shaped hole, a tensioning arc mounting seat 201 is installed above the foreign matter preventing baffle 218, the lower end of the tensioning arc mounting seat 201 is fixedly connected to a connecting plate 219, the connecting plate 219 is fixedly connected to a screw rod mounting seat 207 through convex-concave structure matching and positioning, a through hole is formed in the connecting plate 219, and the foreign matter preventing baffle 218 is fixed to the upper top plate 202 of the diameter adjusting mechanism through the through hole of the.
A first slide rail 501 is arranged on the outer side of the tensioning arc mounting seat 201, a first slide groove 215 is arranged on the lower surface of the upper top plate 202 of the diameter adjusting mechanism, and the first slide groove 215 is matched with the first slide rail 501. The lower part of the screw rod mounting seat 207 is provided with a screw rod mounting hole, a screw rod 205 is arranged in the screw rod mounting hole, the screw rod 205 penetrates through the screw rod mounting hole to be mounted on the screw rod mounting seat 207, and two ends of the screw rod 205 are supported between two side plates 203 of the diameter adjusting mechanism through bearings 206. The lower end of the screw rod mounting seat 207 is provided with a second sliding groove 217, and the upper surface of the lower bottom plate 204 of the tensioning and diameter-adjusting mechanism is provided with a second sliding rail 216 which is matched with the second sliding groove 217 in the inner and outer directions. The screw rod 205 can be rotated to drive the screw rod mounting seat 207 and the tension arc mounting seat 201 to slide back and forth. The end of the screw 205 passes through the inner diameter-adjusting mechanism side plate 203 and then passes through a screw bearing seat 212 to be connected with a small bevel gear 211, and a tension spring 214 is arranged between the screw bearing seat 212 and the inner diameter-adjusting mechanism side plate 203. The end of the screw 205 is connected with an internal spline fixing sleeve 208, the internal spline fixing sleeve 208 is connected with an internal spline sliding sleeve 210 through a spline track 209, and a connecting shaft of a small bevel gear 211 passes through a screw shaft bearing seat 212 and is fixedly connected with the internal spline sliding sleeve 210. The upper end of the screw rod bearing seat 212 is propped against the lower surface of the connecting sleeve 12 through a small conical gear bearing seat mounting bottom plate. The mounting bottom plate of the small conical gear bearing seat is sleeved on the main shaft 1401.
The center of the table board bottom plate 5 is provided with a tension power disc 1, and the middle of the tension power disc 1 is provided with a through hole. As shown in fig. 2, the tension power disc 1 includes a circular power disc upper top plate 101, a cylindrical base 103 extends downwards from the middle of the power disc upper top plate 101, 6 active oblique wedges 102 are arranged around the cylindrical base 103, the active oblique wedges 102 abut against a abutting block 213, and the abutting block 213 is fixedly connected to the end of a diameter adjusting mechanism upper top plate 202 of the diameter adjusting mechanism 2. The active inclined wedge 102 abuts against the abutting block 213 to provide a tensioning force for the tensioning mechanism, and because the tensioning distance is small, the diameter section of the tensioning mechanism is adjusted by the diameter adjusting mechanism. For example, the diameter to be tensioned is 470, the diameter of the diameter adjusting mechanism is adjusted to 450 during operation, and in addition, the diameter of the diameter adjusting mechanism 20 is adjusted to 450 through the lifting of the oil cylinder to control the active inclined wedge 102 and the abutting block to slide so as to realize tensioning and loosening.
The spindle unit 14 further includes: a large bevel gear 1404, a gear 1408, a brush 1407, a transmission gear 901, a second motor 9, and a rotation cylinder 11. A large bevel gear 1404 and a gear 1408 are sleeved on the main shaft 1401 from top to bottom, and the rotary cylinder 11 is arranged below the main shaft 1401. A large bevel gear 1404 meshes with each small bevel gear 211. The second motor 9 drives the transmission gear 901 to rotate, and the transmission gear 901 is meshed with the gear 1408.
The main shaft 1401 is also sleeved with an end face bearing 1409 and a thrust bearing 1410, a main shaft bearing seat 13 is sleeved outside, and a bottom platform 10 is connected below the bearing seat 13. The rotary cylinder 11 is installed at the lower portion of the base table 10, and the output shaft and the main shaft 1401 are coaxially disposed. An extension rod 6 is arranged in a through hole in the center of the main shaft 1401, the lower end of the extension rod 6 is fixedly connected with an output shaft of the rotary oil cylinder 11, and the upper end of the main shaft 1401 penetrates through the through hole in the center of the tension power disc 1 and is fixedly connected with the tension power disc 1 through a fixing nut 7. 1402/1403/1405/1406 are all position adjusting nuts.
The working process is as follows: the first motor 8 drives one of the small bevel gears 211A to rotate, the small bevel gear 211A drives the other small bevel gears 211 to rotate through the transmission action of the large bevel gear 1404, and the screw rod mounting base 207 is driven to slide back and forth on the screw rod 205 through the transmission action of the small bevel gear 211, so that the tensioning arc mounting base 201 is driven to move back and forth along the first sliding rail 501, the inner diameter of a tensioning ring surrounded by 6 tensioning arcs is changed, and the purpose of adjusting the diameter of the circumferential wall of the guide cylinder is achieved. The output shaft of the rotary oil cylinder 11 drives the tension power disc 1 to descend, and the active oblique wedge 102 presses the abutting block 213 to drive the whole diameter adjusting mechanism and the tension arc to move outwards in the circumferential direction, so that the tension function is realized. The output shaft of the rotary oil cylinder 11 drives the tension power disc 1 to rise, the active inclined wedge 102 releases the abutting block 213, and the tension spring 214 drives the whole diameter adjusting mechanism and the tension arc to move outwards and inwards in the circumferential direction to release the tension arc. The output shaft of the second motor 9 is connected with the gear 901 via the worm and gear mechanism to drive the gear 1408 to rotate, so as to realize the rotation of the whole tensioning mechanism.
While the present invention has been described in detail with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (10)
1. A fan draft tube positioning device is characterized by comprising a main shaft part and a table top bottom plate, wherein the main shaft part comprises a main shaft, and the upper end of the main shaft is fixedly connected with the center of the table top bottom plate through a connecting sleeve;
the upper surface of the table board bottom plate is provided with N mounting holes, and all the mounting holes are uniformly distributed around the center of the table board bottom plate and are in a radial extension shape; the outer side of each mounting hole is correspondingly provided with a tensioning arc, and extension lines of adjacent tensioning arcs are connected to enclose a tensioning ring;
the table board bottom plate is provided with a diameter adjusting mechanism at the position of the mounting hole; the diameter adjusting mechanism comprises a mounting frame and a first motor, wherein the mounting frame is mounted at the position of the mounting hole and is in matched connection with the corresponding tensioning arc; the first motor drives the mounting frame to slide back and forth along the mounting hole, so that the inner diameter of the tensioning ring is changed.
2. The positioning device for the guide cylinder of the fan as claimed in claim 1, wherein a large bevel gear is sleeved on the main shaft;
the mounting frame comprises a diameter adjusting mechanism upper top plate, two diameter adjusting mechanism side plates and a diameter adjusting mechanism lower bottom plate, wherein the two diameter adjusting mechanism side plates are respectively abutted against the front end and the rear end of the mounting hole;
a tensioning arc mounting seat is mounted on an upper top plate of the diameter adjusting mechanism, the lower portion of the tensioning arc mounting seat is connected with the upper top plate of the diameter adjusting mechanism in a sliding mode, and the side face of the tensioning arc mounting seat is connected with the inner side of the tensioning arc in a matched mode; the lower end of the tensioning arc mounting seat is provided with a screw rod mounting seat and a screw rod, and the screw rod sequentially penetrates through the screw rod mounting seat and a diameter adjusting mechanism side plate close to the inner side and is supported between the main shaft and the diameter adjusting mechanism side plate close to the outer side;
the screw rod mounting seat is connected with the lower bottom plate of the tensioning diameter-adjusting mechanism in a sliding manner; the end part of the screw rod is connected with a small bevel gear; the large bevel gear is meshed with all the small bevel gears, the first motor drives one of the small bevel gears to rotate, the small bevel gear drives other small bevel gears to rotate under the transmission action of the large bevel gear, and the screw rod mounting seat is driven to slide back and forth on the screw rod under the transmission action of the small bevel gear, so that the tensioning arc mounting seat is driven to move back and forth along the lower bottom plate of the tensioning diameter adjusting mechanism, and the inner diameter of the tensioning ring is changed.
3. The positioning device for the guide shell of the fan as claimed in claim 2, wherein the end of the top plate of each diameter adjusting mechanism is provided with a support block; the center of the table board bottom board is provided with a tensioning power disc, the tensioning power disc comprises a circular power disc upper top board, a cylindrical base extends downwards from the middle of the power disc upper top board, N active oblique wedges are arranged on the periphery of the cylindrical base, and the active oblique wedges are abutted to corresponding abutting blocks.
4. The positioning device for the fan guide cylinder according to claim 2, wherein the end of the screw rod passes through a side plate of the diameter adjusting mechanism close to the inner side and then passes through a screw rod bearing seat to be connected with the small bevel gear, and a tension spring is arranged between the screw rod bearing seat and the side plate of the diameter adjusting mechanism close to the inner side.
5. The positioning device for the fan guide cylinder according to claim 3, wherein a small conical gear bearing seat is sleeved on the main shaft and is positioned below the table-board bottom plate; the upper end of the screw rod bearing seat is abutted against the lower surface of the small conical gear bearing seat through a small conical gear bearing seat mounting base plate.
6. The positioning device for the fan guide cylinder according to claim 2, wherein a gap between the upper top plates of the adjacent diameter adjusting mechanisms is filled with an equal-height table top, and the equal-height table top is fixedly supported on the bottom plate of the table top through a connecting column; the upper surface of the equal-height table top is flush with the upper surface of the upper bottom plate of the diameter adjusting mechanism.
7. The positioning device for the guide cylinder of the fan as claimed in claim 1, wherein the spindle unit further comprises a rotary cylinder, the rotary cylinder is located at the bottom of the spindle, and an output shaft of the rotary cylinder is coaxial with the spindle to drive the spindle to rotate.
8. The blower guide shell positioning device according to claim 2, wherein the spindle unit further includes a gear, a transmission gear, and a second motor; the gear is positioned below the large bevel gear and sleeved on the main shaft; the transmission gear is positioned on one side of the gear and meshed with the gear; the second motor drives the transmission gear to rotate to drive the gear to rotate.
9. The positioning device for the guide shell of the fan as claimed in claim 1, wherein 6 diameter adjusting mechanisms are distributed on the bottom plate of the table top.
10. A blower guide shell positioning device according to any one of claim 8, wherein: the first motor is a stepping or servo motor; the second motor is a stepping or servo motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911418660.0A CN110936311A (en) | 2019-12-31 | 2019-12-31 | Positioning device for guide cylinder of fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911418660.0A CN110936311A (en) | 2019-12-31 | 2019-12-31 | Positioning device for guide cylinder of fan |
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| Publication Number | Publication Date |
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| CN110936311A true CN110936311A (en) | 2020-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911418660.0A Pending CN110936311A (en) | 2019-12-31 | 2019-12-31 | Positioning device for guide cylinder of fan |
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| CN (1) | CN110936311A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112027478A (en) * | 2020-09-08 | 2020-12-04 | 合肥涛裴医疗设备有限公司 | Mobile chassis for selling oil separation equipment |
-
2019
- 2019-12-31 CN CN201911418660.0A patent/CN110936311A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112027478A (en) * | 2020-09-08 | 2020-12-04 | 合肥涛裴医疗设备有限公司 | Mobile chassis for selling oil separation equipment |
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