CN210439234U - Integral horizontal rotary dam - Google Patents

Integral horizontal rotary dam Download PDF

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Publication number
CN210439234U
CN210439234U CN201921417882.6U CN201921417882U CN210439234U CN 210439234 U CN210439234 U CN 210439234U CN 201921417882 U CN201921417882 U CN 201921417882U CN 210439234 U CN210439234 U CN 210439234U
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dam
driving device
water
dam body
river channel
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李正方
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Anhui Yihui Electromechanical Equipment Co ltd
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Abstract

The embodiment of the utility model discloses an integral horizontal rotary dam, which relates to the hydraulic engineering field, and comprises a dam body of a retaining dam, a plurality of connecting rotary rods and a driving device; the dam body of the water retaining dam is arranged above the dam foundation and extends along the width direction of the river channel, the connecting rotary rods are arranged at intervals along the width direction of the river channel, one ends of the connecting rotary rods are hinged with one side of the dam body of the water retaining dam, and the other ends of the connecting rotary rods are respectively hinged with the supports pre-buried on the dam foundation in a one-to-one correspondence manner; the driving device is connected with the dam body of the water retaining dam. The integral horizontal rotary dam overcomes the defects that a rubber dam is easy to damage and age, long in dam ascending and collapsing time, low in safety, poor in reliability, short in service life and the like; the problems that water is stopped and leaked at the side of the hydraulic dam, a hydraulic cylinder and an oil pipe are prone to failure in a river channel, and the maintenance is difficult are solved; meanwhile, the defects of thick and stupid bottom shaft, unscientific stress, poor sand washing effect, high manufacturing cost and the like of the traditional steel dam gate are also solved.

Description

Integral horizontal rotary dam
Technical Field
The embodiment of the utility model provides a relate to the hydraulic engineering field, concretely relates to dam is revolved to whole crouching.
Background
At present, the dam bodies of the retaining dams which are applied in the hydraulic engineering construction are rubber dams, hydraulic dams, steel dam gates and the like.
The rubber dam is a dam body of a dam which is applied more in the early stage, does not block water after the dam is placed, has low manufacturing cost, but has a plurality of problems, and mainly comprises the following components: the dam is easy to damage and age, the time for lifting and collapsing the dam is long, the dam needs to be manually cleaned when being buried by silt, and the service life is short.
The hydraulic dam has more market applications at present and various forms, and is basically characterized in that the hydraulic dam is of an assembled structure, and each panel is about 6-12 meters wide; side water-stopping rubber is arranged between the panels; each panel is driven by a hydraulic oil cylinder, a large number of oil cylinders are arranged in the river channel, and a large number of hydraulic oil pipes are buried in the dam foundation. Its advantages are high dam erection and laying speed, high sand flushing effect, and no need of middle pier in the middle of river course. The defect is that because a large amount of side water-stopping rubber is arranged between the panels, leakage is easy to occur, and the water-stopping rubber needs to be replaced periodically; a large number of hydraulic cylinders and hydraulic oil pipes are arranged in the river channel, so that faults are easy to occur, and the river channel is inconvenient to maintain due to the fact that water contains muddy sand and the maintenance condition is not good; the oil pipe is broken and leaks oil to pollute the environment; and the influence of the north freezing is large, and the dam can not be driven basically in winter.
The steel dam gate is also applied in the current market, is mainly used in rivers with smaller river channel width, drives the gate blade to rotate through the torque of the bottom shaft, and therefore achieves the purpose of water storage. The uneven settlement of the dam foundation has great harm to the steel dam gate, when the river channel is wide, a middle pier is needed to be arranged in the middle, and one middle pier has the width of 5-7 meters, occupies the section of the river channel, and has serious water blocking. Due to its force limitation, its water-retaining height is generally low.
SUMMERY OF THE UTILITY MODEL
Therefore, the embodiment of the utility model provides a whole dam that crouches soon to there is short, the inconvenient, the lower problem of water blocking height of maintenance of life in the dam body of solving current retaining dam.
In order to achieve the above object, an embodiment of the present invention provides an integral horizontal rotation dam, which includes a dam body, a plurality of connecting rotary rods, and a driving device; the dam body of the water retaining dam is arranged above the dam foundation and extends along the width direction of the river channel, the connecting rotary rods are arranged at intervals along the width direction of the river channel, one ends of the connecting rotary rods are hinged with one side of the dam body of the water retaining dam, and the other ends of the connecting rotary rods are respectively hinged with the supports pre-buried on the dam foundation in a one-to-one correspondence manner; the driving device is connected with the dam body of the water blocking dam and used for driving the dam body of the water blocking dam to rotate around a hinge joint of the dam body of the water blocking dam and the connecting rotary rod, so that dam erecting, dam placing and water blocking height adjusting are achieved.
Further, the driving device is located on one side of the dam body of the retaining dam or the other side of the dam body of the retaining dam.
Furthermore, the driving device comprises a first driving device and a second driving device, wherein the first driving device is arranged on a bank wall on one side of the river channel and is hinged with one end of the dam body of the water retaining dam; the second driving device is arranged on the bank wall on the other side of the river channel and is hinged with the other end of the dam body of the retaining dam; the first driving device and the second driving device are both hydraulic cylinders.
Furthermore, the integral horizontal rotary dam also comprises a plurality of blocking supports, and the blocking supports are arranged on the dam foundation at intervals along the width direction of the river channel; the blocking supports are positioned on the other side of the dam body of the water retaining dam and limit the dam body of the water retaining dam.
Furthermore, a plurality of rollers are arranged on the lower side edge of the dam body of the water retaining dam.
Furthermore, a sand washing water stop part extending along the width direction of the river channel is arranged on the upper surface of the dam foundation and is located below the dam body of the retaining dam.
Further, the sand washing water stop part is a stainless steel plate.
Further, many connect rotary rod parallel arrangement, many the pin joint of connecting the rotary rod other end all is in same straight line.
Further, a displacement sensor is arranged on the hydraulic cylinder.
Furthermore, a stone blocking device is arranged on the upstream of the dam body of the water blocking dam, and the stone blocking device is of a frame structure which is connected with the dam foundation and extends along the width direction of the river channel.
The embodiment of the utility model provides a have following advantage:
1. the integral horizontal rotary dam provided by the embodiment of the utility model has the advantages that the structure is simple, the water pressure on the dam body of the retaining dam is transmitted to the dam foundation through the connecting rotary rod, the stress is scientific, the span of the dam body of the retaining dam is large, and the width requirement of a general river is met; when the dam is erected, the water storage height is increased along with the lifting of the dam body of the water blocking dam, the pressure of the water pressure on the dam body of the water blocking dam automatically assists in pushing up the dam body of the water blocking dam, and the acting force of a required driving device is greatly reduced; when the dam is placed, the connecting part for connecting the rotating rod and the dam body of the water blocking dam is at a proper position in the middle section, so that the acting force of the water pressure on the upper half part and the acting force on the lower half part of the dam body of the water blocking dam are mutually offset, and the acting force of a required driving device is also greatly reduced; the whole horizontal rotary dam fully utilizes the structural advantages of the horizontal rotary dam, the received force is uniformly transmitted to the dam foundation as far as possible, the acting force of a required driving device is greatly reduced in the dam erecting and releasing processes, the cost is reduced, and the safety and the reliability are improved.
2. The utility model discloses whole spiral dam crouches puts the dam and founds the dam fast, safe and reliable, and the sand washing is effectual, only needs a little to reduce the water blocking height of dam, makes water blocking dam body and dam foundation become suitable contained angle, forms certain gap between the bottom of water blocking dam body and dam foundation this moment, can wash the sand clean, and the loss rivers are few, do not receive the restriction of quality of water, region and river course width.
3. The utility model discloses wholly crouch and revolve drive arrangement of dam is when the state of dam is found completely and put completely to the dam, all not atress, only at the in-process of founding the dam, putting the dam, just needs drive arrangement work a period, and operating time is very short moreover, has strengthened its security and reliability greatly.
4. The utility model discloses whole spiral dam crouches need not to establish side stagnant water rubber and middle mound for hydraulic pressure dam and steel dam floodgate in the middle of the river course for hydraulic pressure dam, and does not have hydraulic pressure pipeline and pneumatic cylinder in river course dam foundation and the river course, and its pneumatic cylinder setting does not have any influence to the pneumatic cylinder on the bank wall, and the silt particle in the river and sewage have strengthened its security and reliability greatly, and it is very convenient to overhaul moreover.
5. The integral horizontal rotary dam of the embodiment of the utility model overcomes the defects of easy damage and aging of the rubber dam, long time for lifting and collapsing the dam, low safety, poor reliability, short service life and the like; the problems that water is stopped and leaked at the side of the hydraulic dam, a hydraulic cylinder and an oil pipe are prone to failure in a river channel, and the maintenance is difficult are solved; meanwhile, the defects of thick and stupid bottom shaft, unscientific stress, poor sand washing effect, high manufacturing cost and the like of the traditional steel dam gate are also solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.
Fig. 1 is a schematic perspective view of an integral horizontal rotary dam according to an embodiment of the present invention;
FIG. 2 is a schematic view of a portion A of FIG. 1;
fig. 3 is a schematic view of a three-dimensional structure of an integral horizontal rotation dam in a horizontal state according to an embodiment of the present invention;
fig. 4 is a schematic view of the working principle of the integral horizontal rotary dam according to the embodiment of the present invention;
fig. 5 is a schematic view of the working principle of the integral horizontal rotary dam according to another preferred embodiment of the present invention.
Description of reference numerals: 1. a dam body of a water retaining dam; 2. connecting a rotating rod; 3. a first driving device; 4. a second driving device; 5. a dam foundation; 6. a support; 7. a quay wall; 8. a blocking support; 9. a roller; 10. and a sand washing water stop part.
Detailed Description
The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 and 2, the integral horizontal rotary dam comprises a dam body 1 of a water blocking dam, a plurality of connecting rotary rods 2 and a driving device, wherein the dam body 1 of the water blocking dam is arranged above a dam foundation 5, the dam body 1 is determined according to the width of a river channel, a plurality of connecting rotary rods 2 are arranged at intervals along the width of the river channel, the connecting rotary rods 2 are parallel to each other, the distance between every two adjacent connecting rotary rods 2 is equal, one end of each connecting rotary rod 2 is hinged with one side of the dam body 1, one end of each connecting rotary rod 2 is hinged with the middle of the dam body 1, the other end of each connecting rotary rod 2 is hinged with a plurality of supports 6 embedded on a dam foundation 5 in a one-to-one correspondence mode, the arrangement ensures that the pressure applied by the integral horizontal rotary dam to each connecting rotary rod 2 is evenly distributed, and is beneficial to improving the structural strength of the integral horizontal rotary dam. And the hinge points of the other ends of the connecting rotary rods 2 are positioned on the same straight line, so that the connecting rotary rods 2 and the dam body 1 of the retaining dam can be conveniently and synchronously erected or laid down, and the integral horizontal rotary dam can be conveniently and stably opened and closed. The connecting rotary rod 2 is connected with the dam body 1 of the water retaining dam, water pressure borne by the dam body 1 of the water retaining dam is transmitted to the dam foundation 5 through the connecting rotary rod 2, the stress is scientific, the span of the dam body 1 of the water retaining dam is large, and the width requirement of a common river is met. When the dam is erected, the water storage height is increased along with the lifting of the dam body 1 of the water blocking dam, the pressure of the water pressure on the dam body 1 of the water blocking dam automatically assists in the lifting of the dam body 1 of the water blocking dam, and the acting force of a required driving device is greatly reduced; when the dam is placed, the connecting part for connecting the rotating rod 2 and the dam body 1 of the water blocking dam is at a proper position in the middle section, so that the acting force of the water pressure on the upper half part and the acting force on the lower half part of the dam body 1 of the water blocking dam are mutually offset, and the acting force of a required driving device is also greatly reduced; the integral horizontal rotary dam fully utilizes the structural advantages thereof, the received force is uniformly transmitted to the dam foundation 5 as much as possible, the acting force of a required driving device is greatly reduced in the dam erecting and releasing processes, the cost is reduced, and the safety and the reliability are improved.
As shown in fig. 3, the driving device is used for driving the blocking dam body 1 to rotate around the hinge point of the blocking dam body 1 and the connecting rotary rod 2, the driving device comprises a first driving device 3 and a second driving device 4, the first driving device 3 and the second driving device 4 are positioned at one side of the blocking dam body 1, namely the connecting rotary rod 2 and the driving device are positioned at the same side of the blocking dam body 1, the first driving device 3 is arranged on the bank wall 7 at one side of the river channel and is hinged with one end of the blocking dam body 1; the second driving device 4 is arranged on a bank wall 7 on the other side of the river channel and is hinged with the other end of the dam body 1 of the water blocking dam; in this embodiment, the first driving device 3 and the second driving device 4 are hydraulic cylinders, and when the hydraulic cylinders are installed, the telescopic rods of the hydraulic cylinders are connected with the dam body 1 of the retaining dam, the cylinder bodies of the hydraulic cylinders are connected with the quay wall 7, the hydraulic cylinders are controlled by a hydraulic system, and the dam body 1 of the retaining dam and the connecting rotary rods 2 are driven to rotate, lie down and stand up by controlling the telescopic of the hydraulic cylinders, so that dam standing, dam placement and water retaining height adjustment are achieved. Of course, the driving device can also be arranged on the dam foundation at the upstream or the downstream of the dam body 1 of the water retaining dam, one end of the driving device is connected to the bottom end of the dam body 1 of the water retaining dam, the other end of the driving device is fixed on the dam foundation, and the dam erection, the dam placement and the water retaining height adjustment are realized by controlling the driving device. The driving device is not stressed when completely erecting the dam and completely putting the dam, only in the process of erecting the dam and putting the dam, the driving device needs to work for a period of time, the working time is very short, and the safety and the reliability of the driving device are greatly enhanced. For hydraulic pressure dam and steel dam floodgate, need not to establish side sealing rubber and middle mound in the middle of the river course for the whole spiral dam that crouches of this embodiment, and do not have hydraulic pressure pipeline and pneumatic cylinder in river course dam foundation 5 and the river course, its pneumatic cylinder setting is on bank wall 7, and silt and the sewage in the river do not have any influence to the pneumatic cylinder, have strengthened its security and reliability greatly, and it is very convenient to overhaul moreover.
As shown in fig. 4, in the present embodiment, the connecting rotary rods 2 are located on one side of the dam body 1, i.e. upstream of the dam body 1, and when the connecting rotary rods 2 are located upstream, the connecting rotary rods 2 exert a tensile force on the dam body 1, however, the positions of the connecting rotary rods 2 are not limited thereto, and the connecting rotary rods 2 may be located on the other side of the dam body 1, i.e. downstream of the dam body 1, and when the connecting rotary rods 2 are located downstream, the connecting rotary rods 2 exert a supporting effect on the dam body 1. In this embodiment, the two hydraulic cylinders are both located at one side of the dam body 1 of the retaining dam, i.e. at the upstream of the dam body 1 of the retaining dam, although the position of the hydraulic cylinders is not limited thereto, the two hydraulic cylinders may also be located at the other side of the dam body 1 of the retaining dam, i.e. at the downstream of the dam body 1 of the retaining dam; the dam body 1 of the retaining dam and the connecting rotary rod 2 are driven to rotate, lie down and stand up by controlling the stretching of the hydraulic cylinder, so that the dam standing, the dam placing and the water retaining height adjusting are realized.
In order to prevent water leakage, a water stopping device can be arranged on the contact surfaces of the dam body 1 of the water retaining dam and the dam foundation 5 and the quay wall 7 to avoid water leakage. Specifically, the water stopping device is made of water stopping rubber which is arranged at the bottom and two ends of the dam body 1 of the retaining dam and is extruded to achieve the purpose of stopping water.
Further, in a preferred embodiment of the present invention, the integral horizontal rotation dam further comprises a plurality of blocking supports 8, and the plurality of blocking supports 8 are arranged on the dam foundation 5 at intervals along the width direction of the river; the blocking supports 8 are located on the other side of the water retaining dam body 1 and limit the water retaining dam body 1, and when the water retaining dam body 1 reaches the highest water retaining level, the blocking supports 8 prevent the water retaining dam body 1 from moving further downstream. The lower side edge of the dam body 1 of the water retaining dam is provided with a plurality of rollers 9, and the rollers 9 can reduce the friction force between the dam body 1 of the water retaining dam and the dam foundation 5 in the process of erecting and placing the whole horizontal rotary dam. For hydraulic pressure dam and steel dam floodgate, need not to establish side stagnant water rubber and middle mound in the middle of the river course, and do not have hydraulic pressure pipeline and pneumatic cylinder in river course dam foundation 5 and the river course, its pneumatic cylinder sets up on bank wall 7, and silt particle and sewage in the river do not have any influence to the pneumatic cylinder, have strengthened its security and reliability greatly, and it is very convenient to overhaul moreover.
Further, in the utility model discloses a preferred embodiment, the upper surface of dam foundation 5 is provided with sand washing water stop portion 10 along the extension of river course width direction, and sand washing water stop portion 10 is located the below of retaining dam body 1, and sand washing water stop portion 10 is the stainless steel plate in this embodiment, because the surface of stainless steel plate is smooth, can effectively reduce frictional force, makes debris such as silt particle, stone under the drive of rivers, can not stop this department, does not let its stagnant water effect that influences retaining dam body 1 bottom. Of course, the sand washing water stop unit 10 is not limited thereto, and the sand washing water stop unit 10 may be another device having the same function. The integral horizontal rotary dam has the advantages of high dam placing and erecting speed, safety, reliability and good sand washing effect, sand can be washed clean only by slightly reducing the water blocking height of the dam to enable the dam body 1 of the water blocking dam and the dam foundation 5 to form a proper included angle, a certain gap is formed between the bottom of the dam body 1 of the water blocking dam and the dam foundation 5, and the loss of water flow is less and is not limited by water quality, regions and river width. In this embodiment, two hydraulic cylinders are provided with displacement sensors, the displacement sensors can enable the two hydraulic cylinders to move synchronously, products similar to the displacement sensors and capable of enabling the hydraulic cylinders to move synchronously can be used, and the two hydraulic cylinders are controlled in a centralized manner. Further, the dam body 1 of the present embodiment is provided upstream with a stone blocking device (not shown) which is a frame structure connected to the dam foundation 5 and extending in the width direction of the river. When flood occurs in the river channel in the mountainous area, objects such as large stones and the like can be washed down, and the stone blocking device is arranged at the upstream of the dam body 1 of the water blocking dam, so that the whole horizontal rotary dam can be prevented from being impacted by the large stones. Particularly, the stone blocking device is located at the upstream of the dam body 1 of the water blocking dam and extends along the width direction of a river channel, a square frame structure is welded by steel plates, the length and the width of a single square are proper, stones with certain sizes can be just blocked and fixed on the dam foundation 5, the thickness direction of the square needs to be consistent with the water flow direction, the water blocking of the square frame is small, large stones or sundries can be blocked, the whole horizontal rotary dam is prevented from being impacted by the large stones, and the safety of the whole horizontal rotary dam is enhanced. The integral horizontal rotary dam of the embodiment overcomes the defects that a rubber dam is easy to damage and age, long in dam ascending and dam collapsing time, low in safety, poor in reliability, short in service life and the like; the problems that water is stopped and leaked at the side of the hydraulic dam, a hydraulic cylinder and an oil pipe are prone to failure in a river channel, and the maintenance is difficult are solved; meanwhile, the defects of thick and stupid bottom shaft, unscientific stress, poor sand washing effect, high manufacturing cost and the like of the traditional steel dam gate are also solved.
Further, in another preferred embodiment of the present invention, as shown in fig. 5, the present embodiment is different from the above embodiments in that the first driving device 3 and the second driving device 4 are located at the other side of the dam body 1, that is, the connecting rotary rod 2 and the driving device are located at different sides of the dam body 1, when the first driving device 3 and the second driving device 4 extend and contract, the dam body 1 is driven to rotate around the hinge point of the dam body 1 and the connecting rotary rod 2, thereby completing actions such as standing and placing the dam.
Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims (10)

1. The integral horizontal rotary dam is characterized by comprising a water retaining dam body, a plurality of connecting rotary rods and a driving device; the dam body of the water retaining dam is arranged above the dam foundation and extends along the width direction of the river channel, the connecting rotary rods are arranged at intervals along the width direction of the river channel, one ends of the connecting rotary rods are hinged with one side of the dam body of the water retaining dam, and the other ends of the connecting rotary rods are respectively hinged with the supports pre-buried on the dam foundation in a one-to-one correspondence manner; the driving device is connected with the dam body of the water blocking dam and used for driving the dam body of the water blocking dam to rotate around a hinge joint of the dam body of the water blocking dam and the connecting rotary rod, so that dam erecting, dam placing and water blocking height adjusting are achieved.
2. An integral horizontal spiral dam as claimed in claim 1 wherein said drive means is located on one side of said barrage or on the other side of said barrage.
3. The integral horizontal rotary dam according to claim 2, wherein the driving device comprises a first driving device and a second driving device, the first driving device is arranged on a bank wall on one side of a river channel and is hinged with one end of the dam body of the retaining dam; the second driving device is arranged on the bank wall on the other side of the river channel and is hinged with the other end of the dam body of the retaining dam; the first driving device and the second driving device are both hydraulic cylinders.
4. The integral horizontal rotation dam according to claim 3, further comprising a plurality of blocking supports, wherein the plurality of blocking supports are arranged on the dam foundation at intervals along the width direction of the river channel; the blocking supports are positioned on the other side of the dam body of the water retaining dam and limit the dam body of the water retaining dam.
5. An integral horizontal rotary dam according to claim 1, 2, 3 or 4, wherein the lower side of the dam body is provided with a plurality of rollers.
6. The integral horizontal rotary dam according to claim 5, wherein the upper surface of the dam foundation is provided with a sand washing water stop part extending along the width direction of the river channel, and the sand washing water stop part is positioned below the dam body of the retaining dam.
7. The integral horizontal cyclone dam of claim 6, wherein the sand washing water stop part is a stainless steel plate.
8. An integral horizontal rotary dam according to claim 2 or 3 wherein the connecting rotary rods are arranged in parallel, and the hinge points at the other ends of the connecting rotary rods are all in the same straight line.
9. The integral horizontal rotary dam of claim 3, wherein a displacement sensor is arranged on the hydraulic cylinder.
10. The integral horizontal rotary dam according to claim 9, wherein a stone blocking device is arranged upstream of the dam body of the retaining dam, and the stone blocking device is a frame structure connected with the dam foundation and extending along the width direction of the river channel.
CN201921417882.6U 2019-08-28 2019-08-28 Integral horizontal rotary dam Active CN210439234U (en)

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CN201921417882.6U CN210439234U (en) 2019-08-28 2019-08-28 Integral horizontal rotary dam

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Application Number Priority Date Filing Date Title
CN201921417882.6U CN210439234U (en) 2019-08-28 2019-08-28 Integral horizontal rotary dam

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110409380A (en) * 2019-08-28 2019-11-05 李正方 A kind of sleeping rotation dam of entirety

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110409380A (en) * 2019-08-28 2019-11-05 李正方 A kind of sleeping rotation dam of entirety

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Effective date of registration: 20220722

Address after: 231100 2e729, building S1, No. 6, Menghe Road, Shuangdun Town, Changfeng County, Hefei City, Anhui Province

Patentee after: Anhui Yihui Electromechanical Equipment Co.,Ltd.

Address before: 230000 ziyufu, diezhang Road, economic development zone, Shushan District, Hefei City, Anhui Province

Patentee before: Li Zhengfang