CN217142426U - Transmission mechanism of handheld hydraulic drilling machine - Google Patents
Transmission mechanism of handheld hydraulic drilling machine Download PDFInfo
- Publication number
- CN217142426U CN217142426U CN202220733982.5U CN202220733982U CN217142426U CN 217142426 U CN217142426 U CN 217142426U CN 202220733982 U CN202220733982 U CN 202220733982U CN 217142426 U CN217142426 U CN 217142426U
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- frame
- driving wheel
- elastic
- driving
- transmission belt
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 70
- 238000005553 drilling Methods 0.000 title claims description 16
- 230000001105 regulatory effect Effects 0.000 claims abstract description 31
- 238000002347 injection Methods 0.000 claims description 12
- 239000007924 injection Substances 0.000 claims description 12
- 230000001681 protective effect Effects 0.000 claims description 9
- 230000000087 stabilizing effect Effects 0.000 claims description 4
- 238000005253 cladding Methods 0.000 claims description 3
- 238000005491 wire drawing Methods 0.000 claims 3
- 239000002184 metal Substances 0.000 description 10
- 239000003921 oil Substances 0.000 description 8
- 230000007547 defect Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Abstract
The novel transmission mechanism comprises a rack, an elastic transmission belt, a driving wheel, an output shaft, an input shaft, a pressure regulating valve, an adjusting roller and a hydraulic motor, wherein the hydraulic motor is connected with the outer surface of one end of the rack and is connected with the driving wheel through the input shaft; the elastic transmission belt is connected with the lower end face of the frame through an adjusting roller, and the hydraulic motor is communicated with the pressure adjusting valve. On one hand, the structure of the hydraulic transmission system is greatly simplified, and the convenience and the flexibility of using and maintaining equipment are improved; on the other hand, the power transmission performance is good, the power transmission and the output are smooth, the adjustment of the rotating speed and the torque of the drill rod in a wider range is realized, and the adjustment precision is high.
Description
Technical Field
The utility model relates to a transmission mechanism of a handheld hydraulic drilling machine, belonging to the technical field of hydraulic machinery.
Background
In practical use, the hand-held hydraulic drilling machine is driven to operate by a hydraulic motor and a power system based on a gear set at present, although the use requirement can be met, on one hand, the structure of the current handheld hydraulic motor device is large, the self weight is large, the use flexibility and the convenience are poor, on the other hand, because the gear set is adopted for power transmission, the efficiency is relatively fixed during operation and power transmission, and serious vibration and the like are easy to generate during operation, thereby seriously influencing the flexibility and the convenience of adjusting the rotating speed and the torque when the hand-held hydraulic drilling machine equipment operates, meanwhile, when the conditions such as locked rotor and the like occur, the gear mechanism and the hydraulic oil circuit system are easy to be damaged, even the hand-held drilling machine has serious swinging and the like, even as a result, injury to the operator can occur, which can seriously affect the safety and reliability of the operation of the hand-held hydraulic drill device.
Therefore, in order to solve the problem, a brand new handheld hydraulic drill driving system needs to be developed to meet the actual use requirement.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects in the prior art, the novel transmission mechanism of the handheld hydraulic drilling machine is provided, on one hand, the novel transmission mechanism of the handheld hydraulic drilling machine is more traditional than the traditional handheld hydraulic motor equipment, so that the structure of a hydraulic transmission system is greatly simplified, the use and maintenance convenience and flexibility of the equipment are improved, the self weight and the volume of the handheld hydraulic motor equipment are reduced and lightened, and the use flexibility and the use convenience of the equipment are improved; on the other hand, the power transmission performance is good, the power transmission and the output are smooth, the defect that the traditional gear transmission system is easy to shake during operation is effectively overcome, meanwhile, in operation, the adjustment of the rotating speed and the torque of the drill rod can be realized in a wider range, the adjustment precision is high, the transmission system faults caused by the conditions of drill rod rotation blockage and the like can be effectively prevented, and therefore the use safety and the use reliability of the handheld hydraulic motor equipment are greatly improved.
In order to achieve the above purpose, the present invention is realized by the following technical solution:
a transmission mechanism of a handheld hydraulic drilling machine comprises a rack, an elastic transmission belt, a driving wheel, a transmission wheel, an output shaft, an input shaft, a pressure regulating valve, a driving hydraulic cylinder, a regulating block, a regulating roller and a hydraulic motor, wherein the rack is of a frame structure with a rectangular axial section; the elastic transmission belt is connected with the lower end face of the frame through adjusting rollers, the number of the adjusting rollers is two, the adjusting rollers are symmetrically distributed on two sides of the elastic transmission belt and abut against the outer side face of the elastic transmission belt, the adjusting rollers are connected with the upper end face of the adjusting block, the axes of the adjusting rollers are vertically distributed with the bottom of the frame, the lower end face of the adjusting block is connected with the bottom of the frame through a driving hydraulic cylinder in a sliding mode, the axes of the driving hydraulic cylinder and the bottom of the frame are distributed in parallel and form an included angle of 30-90 degrees with the axis of the frame, the hydraulic motor and the driving hydraulic cylinder are connected in parallel and are communicated with pressure regulating valves, and pressure regulating valves connected with the hydraulic motor and the driving hydraulic cylinder are connected in series through pressure stabilizing valves and are connected with the frame.
Furthermore, the bottoms of the frames corresponding to the adjusting blocks are connected in a sliding manner through guide slide rails, the guide slide rails are of U-shaped groove-shaped cross sections, the guide slide rails are of any one of a linear structure and an arc structure, the outer surfaces of the guide slide rails are hinged with the rear end face of the driving hydraulic cylinder through elastic hinges, and the front end face of the driving hydraulic cylinder is hinged with the outer side face of the adjusting block through elastic hinges.
Furthermore, the driving wheel and the driving wheel respectively comprise a base body, a baffle plate and a wear-resistant protective sleeve, wherein the wear-resistant protective sleeve is coated outside the base body and is not in a round table structure coaxially distributed on the base body, the thickness of the wear-resistant protective sleeve is not less than 5 mm, two ends of the base body are respectively connected with the baffle plate, the baffle plate and the base body are coaxially distributed, the diameter of the baffle plate is at least 1.5 times of that of the two ends of the base body, and the distance between the baffle plates of the driving wheel and the driving wheel is 10 mm to 50% of the length of the rack.
Furthermore, the adjusting block is additionally provided with at least one oil injection port, the oil injection port is positioned between the two adjusting rollers, and the axis of the oil injection port is intersected with the outer surface of the elastic transmission belt and forms an included angle of 30-60 degrees with the outer surface of the elastic transmission belt.
Furthermore, the elastic transmission belt comprises a metal belt, a pre-breaking buckle, an elastic rubber sheath and traction drawn wires, wherein the metal belt is of a strip structure with a rectangular cross section, two ends of the metal belt are connected through the pre-breaking buckle to form a closed annular structure, the elastic rubber sheath is of a groove-shaped structure with a cross section of 'Jiong', the metal belt and the pre-breaking buckle are respectively coated outside the elastic rubber sheath and the driving wheel and the outer surface of the driving wheel, the metal belt is abutted against and slidably connected with the outer surface of the driving wheel through the elastic rubber sheath, 2-4 wiring grooves with a circular arc-shaped cross section are additionally arranged at the bottom of the elastic rubber sheath, the traction drawn wires are embedded in the wiring grooves and coaxially distributed with the wiring grooves, and two ends of each traction drawn wire are connected to form a closed annular structure.
Furthermore, the cross section is the spacing groove of isosceles trapezoid is established to the dancer roll surface, spacing trench and the coaxial annular structure who distributes of dancer roll, and the dancer roll passes through the spacing groove cladding outside the elastic drive area side surface, and 1.5-2.5 times of spacing groove minimum width position elastic drive area thickness.
Compared with the traditional handheld hydraulic motor equipment, on one hand, the novel handheld hydraulic motor equipment greatly simplifies the structure of a hydraulic transmission system, improves the convenience and flexibility of equipment use and maintenance, is favorable for reducing and lightening the self weight and volume of the handheld hydraulic motor equipment, and improves the flexibility and convenience of equipment use; on the other hand, the power transmission performance is good, the power transmission and the output are smooth, the defect that the traditional gear transmission system is easy to shake during operation is effectively overcome, meanwhile, in operation, the adjustment of the rotating speed and the torque of the drill rod can be realized in a wider range, the adjustment precision is high, the transmission system faults caused by the conditions of drill rod rotation blockage and the like can be effectively prevented, and therefore the use safety and the use reliability of the handheld hydraulic motor equipment are greatly improved.
Drawings
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments;
FIG. 1 is a schematic diagram of the novel structure;
FIG. 2 is a schematic view of the driving wheel 3 and the driving wheel;
FIG. 3 is a schematic view of an elastic drive belt structure;
FIG. 4 is a schematic cross-sectional view of a portion of the elastomeric transmission belt;
FIG. 5 is a schematic view showing a connection structure between the adjusting block and the adjusting roller.
Detailed Description
In order to make the technical means, creation features, achievement purposes and effects of the novel implementation easy to construct, the novel implementation is further explained below by combining with specific embodiments.
As shown in fig. 1-5, a transmission mechanism of a hand-held hydraulic drilling machine comprises a frame 1, an elastic transmission belt 2, a driving wheel 3, a transmission wheel 4, an output shaft 5, an input shaft 6, a pressure regulating valve 7, a driving hydraulic cylinder 8, a regulating block 9, a regulating roller 10 and a hydraulic motor 11, wherein the frame 1 is a frame structure with a rectangular axial section, the hydraulic motor 11 is connected with the outer surface of one end position of the frame 1 and is connected with the driving wheel 3 through the input shaft 6, the driving wheel 3 is embedded in the frame 1 and is positioned at one end position of the frame 1, the axial line of the driving wheel 3 is vertically distributed with the axial line of the frame 1, the transmission wheel 4 is embedded in the frame 1 and is positioned at the other end position of the frame 1 and is connected with the output shaft 5 and coaxially distributed, the driving wheel 3 and the transmission wheel 4 are both in a circular truncated cone structure, the axial lines between the driving wheel 3 and the transmission wheel 4 are distributed in parallel, and the small-diameter end surfaces of the driving wheel 3 and the transmission wheel 4 are opposite, the driving wheel 3 and the driving wheel 4 are connected through an elastic driving belt 2; the elastic transmission belt 2 is connected with the lower end face of the frame 1 through an adjusting roller 10, the number of the adjusting rollers 10 is two, the adjusting rollers are symmetrically distributed on two sides of the elastic transmission belt 2 and abut against the outer side face of the elastic transmission belt 2, the adjusting rollers 10 are connected with the upper end face of an adjusting block 9, the axis of each adjusting roller 10 is vertically distributed with the bottom of the frame 1, the lower end face of the adjusting block 9 is connected with the bottom of the frame 1 through a driving hydraulic cylinder 8 in a sliding mode, the axis of each driving hydraulic cylinder 8 is distributed in parallel with the bottom of the frame 1 and forms an included angle of 30-90 degrees with the axis of the frame 1, a hydraulic motor 11 and the driving hydraulic cylinder 8 are connected in parallel, pressure regulating valves 7 are communicated, and the pressure regulating valves connected with the hydraulic motor 11 and the driving hydraulic cylinder 8 in a connected mode through a pressure stabilizing valve 12 and are connected with the frame 1.
In this embodiment, the bottoms of the frames 1 corresponding to the adjusting blocks 9 are slidably connected through guide rails 13, the guide rails 13 have a cross-section of a U-shaped groove-like structure, the guide rails 13 have a linear structure or an arc structure, the outer surface of the guide rails 13 is hinged to the rear end surface of the driving hydraulic cylinder 8 through an elastic hinge, and the front end surface of the driving hydraulic cylinder 8 is hinged to the outer side surface of the adjusting blocks 9 through an elastic hinge.
Meanwhile, the adjusting block 9 is additionally provided with at least one oil injection port 14, the oil injection port 14 is positioned between the two adjusting rollers 10, and the axis of the oil injection port 14 is intersected with the outer surface of the elastic transmission belt 2 and forms an included angle of 30-60 degrees with the outer surface of the elastic transmission belt 2.
In addition, the driving wheel 3 and the driving wheel 4 both comprise a base body 101, a baffle plate 102 and a wear-resistant protective sleeve 103, wherein the wear-resistant protective sleeve 103 is coated outside the base body 101, and is not in a circular truncated cone structure coaxially distributed on the base body 101, the thickness of the wear-resistant protective sleeve is not less than 5 mm, the two ends of the base body 101 are respectively connected with the baffle plate 102, the baffle plate 102 and the base body 101 are coaxially distributed, the diameter of the baffle plate 102 is at least 1.5 times of the diameter of the two ends of the base body 101, and the distance between the baffle plates 102 of the driving wheel 3 and the driving wheel 4 is 10 mm to 50% of the length of the rack 1.
It should be noted that the elastic transmission belt 2 includes a metal belt 21, a pre-breaking buckle 22, an elastic rubber sheath 23 and a traction wire 24, the metal belt 21 is a belt-shaped structure with a rectangular cross section, two ends of the metal belt are connected by the pre-breaking buckle 22 to form a closed ring-shaped structure, the elastic rubber sheath 23 is a groove-shaped structure with a cross section of "Jiong", and covers the metal belt 21 and the pre-breaking buckle 22 respectively, the metal belt 21 abuts against the outer surfaces of the driving wheel 3 and the driving wheel 4 through the elastic rubber sheath 23 and is connected with the outer surface of the driving wheel 4 in a sliding manner, 2-4 wiring grooves 25 with an arc cross section are additionally arranged at the bottom of the elastic rubber sheath 23, the traction wire 24 is embedded in the wiring grooves 25 and is coaxially distributed with the wiring grooves 25, and two ends of each traction wire 24 are connected to form a closed ring-shaped structure.
In this embodiment, the spacing groove 15 that the cross section is isosceles trapezoid is established to regulating roller 10 roll surface, 15 position of spacing groove and the ring structure of regulating roller 10 coaxial distribution, and regulating roller 10 passes through spacing groove 15 cladding outside elastic transmission belt 2 side surface, and 1.5-2.5 times of the minimum width position elastic transmission belt 2 thickness of spacing groove 15.
This is novel in the concrete implementation, at first assembles this neotype frame, elastic drive belt, drive wheel, output shaft, input shaft, air-vent valve, drive hydraulic cylinder, regulating block, regulating roller, hydraulic motor of constitution, then will assemble this novel frame mounting to hydrodrill's casing in to make the output shaft and hydrodrill drilling rod hold the mechanism with being connected, can accomplish the novel assembly of cost.
In the novel operation, firstly, the pressure regulating valve is communicated with an external hydraulic system, then, the drill rod is connected with a hydraulic drilling machine, when the drilling operation is carried out, firstly, the external hydraulic system drives the hydraulic motor to operate through the pressure regulating valve, then, the rotary motion of the hydraulic motor is transmitted to the driving wheel through the input shaft, the driving wheel transmits power to the driving wheel through the elastic transmission belt, and finally, the driving force is transmitted to the drill rod through the output shaft by the driving wheel to meet the requirement of the drilling operation;
during drilling and other operations, on one hand, the pressure input to the hydraulic motor can be adjusted through the pressure regulating valve, and the purpose of adjusting the driving power and the rotating speed of the hydraulic motor is achieved; on the other hand, the bronze drum pressure regulating valve drives the driving hydraulic cylinder to do telescopic motion, and in the telescopic motion, the driving regulating block and the regulating roller connected with the regulating block move along the direction forming a certain included angle with the axis of the driving wheel, so that the working position of the elastic transmission belt is regulated along the axis direction of the driving wheel and the driving wheel;
in addition, when the pressure regulating valve drives the driving hydraulic cylinder and the hydraulic motor to operate, pressure balance can be carried out between the pressure regulating valves connected with the driving hydraulic cylinder and the hydraulic motor through the pressure stabilizing valve, so that the driving power regulation of the hydraulic motor and the position regulation of the elastic transmission belt are synchronously carried out, and the synchronism and the accuracy of the regulation of the rotating speed and the torque are improved.
Meanwhile, in operation, on one hand, the oil injection port on the adjusting block can be communicated with an external lubricating oil system, so that oil injection lubrication is realized on the elastic transmission belt in operation, the adjusting operation efficiency is improved, and the elastic transmission belt is prevented from being damaged due to overheating; on the other hand, the pre-breaking buckle arranged through the elastic transmission belt is broken when the torque is rapidly increased due to the blockage of equipment and the like, so that the hydraulic motor and a related hydraulic system are prevented from being broken due to overlarge torque, and the safety and the reliability of the operation of the equipment are improved.
Compared with the traditional handheld hydraulic motor equipment, on one hand, the novel handheld hydraulic motor equipment greatly simplifies the structure of a hydraulic transmission system, improves the convenience and flexibility of equipment use and maintenance, is favorable for reducing and lightening the self weight and volume of the handheld hydraulic motor equipment, and improves the flexibility and convenience of equipment use; on the other hand, the power transmission performance is good, the power transmission and the output are smooth, the defect that the traditional gear transmission system is easy to shake during operation is effectively overcome, meanwhile, in operation, the adjustment of the rotating speed and the torque of the drill rod can be realized in a wider range, the adjustment precision is high, the transmission system faults caused by the conditions of drill rod rotation blockage and the like can be effectively prevented, and therefore the use safety and the use reliability of the handheld hydraulic motor equipment are greatly improved.
The foregoing shows and describes the basic principles and principal features of the present novel form, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, but rather that various changes and modifications may be made without departing from the spirit and scope of the invention, which is intended to be covered by the appended claims. The scope of the present novel claims is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a hand-held type hydrodrill drive mechanism which characterized in that: the transmission mechanism of the hand-held hydraulic drilling machine comprises a frame, an elastic transmission belt, a driving wheel, a transmission wheel, an output shaft, an input shaft, a pressure regulating valve, a driving hydraulic cylinder, a regulating block, a regulating roller and a hydraulic motor, wherein the frame is of a frame structure with a rectangular axial section, wherein the hydraulic motor is connected with the outer surface of one end of the frame and is connected with a driving wheel through an input shaft, the driving wheel is embedded in the frame, and is positioned at one end of the frame, the axes of the driving wheels are vertically distributed with the axes of the frame, the driving wheels are embedded in the frame and positioned at the other end of the frame and connected with the output shaft and coaxially distributed, the driving wheel and the driving wheel are both in a circular truncated cone structure, the axes of the driving wheel and the driving wheel are distributed in parallel, the positions of the small-diameter end surfaces of the driving wheel and the driving wheel are opposite, and the driving wheel are connected through an elastic transmission belt; the elastic transmission belt is connected with the lower end face of the frame through adjusting rollers, the two adjusting rollers are symmetrically distributed on two sides of the elastic transmission belt and abut against the outer side face of the elastic transmission belt, the adjusting rollers are connected with the upper end face of the adjusting block, the axes of the adjusting rollers are vertically distributed with the bottom of the frame, the lower end face of the adjusting block is connected with the bottom of the frame through a driving hydraulic cylinder in a sliding mode, the axes of the driving hydraulic cylinder and the bottom of the frame are distributed in parallel and form an included angle of 30-90 degrees with the axis of the frame, the hydraulic motor and the driving hydraulic cylinder are connected in parallel and are communicated with pressure regulating valves, and the pressure regulating valves connected with the hydraulic motor and the driving hydraulic cylinder are connected in series through pressure stabilizing valves and are connected with the frame.
2. The hand-held hydraulic drill drive of claim 1, wherein: the bottom parts of the frames corresponding to the adjusting blocks are connected in a sliding mode through guide sliding rails, the guide sliding rails are of U-shaped groove-shaped structures in cross section, the guide sliding rails are of any one of linear structures and arc structures, the outer surfaces of the guide sliding rails are hinged to the rear end face of the driving hydraulic cylinder through elastic hinges, and the front end face of the driving hydraulic cylinder is hinged to the outer side face of the adjusting block through the elastic hinges.
3. The hand-held hydraulic drill drive of claim 1, wherein: the driving wheel and the driving wheel respectively comprise a base body, a baffle and a wear-resistant protective sleeve, wherein the wear-resistant protective sleeve is coated outside the base body and is not in a round table structure coaxially distributed on the base body, the thickness of the wear-resistant protective sleeve is not less than 5 mm, two ends of the base body are respectively connected with the baffle, the baffle and the base body are coaxially distributed, the diameter of the baffle is at least 1.5 times of the diameter of the two ends of the base body, and the distance between the baffles of the driving wheel and the driving wheel is 10 mm to 50% of the length of the rack.
4. The hand-held hydraulic drill drive of claim 1, wherein: the adjusting block is additionally provided with at least one oil injection port, the oil injection port is positioned between the two adjusting rollers, the axis of the oil injection port is intersected with the outer surface of the elastic transmission belt, and an included angle of 30-60 degrees is formed between the axis of the oil injection port and the outer surface of the elastic transmission belt.
5. The hand-held hydraulic drill drive of claim 1, wherein: elastic drive belt includes strap, pre-fracture knot, elastic rubber sheath, pulls the wire drawing, the strap is the zonation of rectangle for the cross section, and its both ends are detained through pre-fracture and are connected and constitute closed loop configuration, elastic rubber sheath is for the cross section personally submitting "Jiong" font slot-like structure to the cladding is outside strap, pre-fracture knot respectively, and the strap offsets and sliding connection through elastic rubber sheath and drive wheel, drive wheel surface, elastic rubber sheath tank bottom establishes 2-4 wiring grooves that the cross section is circular arc structure in addition, pull the wire drawing and inlay in the wiring groove and with the coaxial distribution of wiring groove, and each pulls the wire drawing both ends and connects and constitute closed loop configuration.
6. The hand-held hydraulic drill drive of claim 1, wherein: the adjusting roller is characterized in that a limiting groove with an isosceles trapezoid cross section is arranged on the roller surface of the adjusting roller, the limiting groove and the adjusting roller are of an annular structure which is coaxially distributed, the adjusting roller is coated outside the side surface of the elastic transmission belt through the limiting groove, and the minimum width of the limiting groove is 1.5-2.5 times of the thickness of the elastic transmission belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220733982.5U CN217142426U (en) | 2022-03-31 | 2022-03-31 | Transmission mechanism of handheld hydraulic drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220733982.5U CN217142426U (en) | 2022-03-31 | 2022-03-31 | Transmission mechanism of handheld hydraulic drilling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217142426U true CN217142426U (en) | 2022-08-09 |
Family
ID=82697279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220733982.5U Expired - Fee Related CN217142426U (en) | 2022-03-31 | 2022-03-31 | Transmission mechanism of handheld hydraulic drilling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217142426U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116965270A (en) * | 2023-08-22 | 2023-10-31 | 衡山敬安农业开发有限公司 | Irrigation equipment for greenhouse vegetable planting |
-
2022
- 2022-03-31 CN CN202220733982.5U patent/CN217142426U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116965270A (en) * | 2023-08-22 | 2023-10-31 | 衡山敬安农业开发有限公司 | Irrigation equipment for greenhouse vegetable planting |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220809 |