CN109850755B - Movable pipe clamp of conical pipe and machining method - Google Patents
Movable pipe clamp of conical pipe and machining method Download PDFInfo
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- CN109850755B CN109850755B CN201810396721.7A CN201810396721A CN109850755B CN 109850755 B CN109850755 B CN 109850755B CN 201810396721 A CN201810396721 A CN 201810396721A CN 109850755 B CN109850755 B CN 109850755B
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Abstract
The invention discloses a movable pipe clamp for a conical pipe and a machining method, and the movable pipe clamp comprises a positioning plate (1), wherein two sides of the positioning plate (1) are connected with L-shaped limiting clamp plates (3) through screws (2), a clamp seat (4) is arranged between the limiting clamp plates (3) at the two sides, a spherical movable seat (401) is arranged at the lower end of the clamp seat (4), the bottom of the spherical movable seat (401) is mutually attached to the positioning plate (1), clamp plates (5) fixed on the positioning plate (1) are arranged at two ends of the clamp seat (4), the clamp plates (5) are mutually vertical to the limiting clamp plates (3), a plurality of clamping blocks (402) are uniformly distributed at the top of the clamp seat (4), an inclination angle of 15-25 degrees is arranged between each clamping block (402) and the positioning plate (1), and a V. The invention has the characteristics of high applicability, good clamping stability and long service life.
Description
Technical Field
The invention relates to a conical pipe clamp, in particular to a movable conical pipe clamp and a machining method.
Background
In the process of processing and transporting the conical pipe, the inner wall of the conical pipe is often clamped after the pipe clamp is opened, so that the conical pipe is rotated and dragged; at present, most of clamping modes for the conical pipe are that a plurality of pipe clamps are annularly arranged on a telescopic rod through connecting rods, and the telescopic rod stretches the plurality of pipe clamps simultaneously, so that the conical pipe is clamped. However, because the angles of different conical tube walls are different, each type of pipe clamp can only be suitable for a conical tube with one inclination, a workshop needs to be simultaneously provided with a plurality of pipe clamps with different types to complete the clamping work of the conical tube, and the pipe clamps also need to be continuously disassembled, assembled and replaced in the clamping process, so that the production and transportation cost is improved, and the working efficiency is reduced; and the surface of the pipe clamp can continuously apply pressure and rub against the inner wall of the conical pipe in the clamping process. The clamping part of the pipe clamp can be abraded in different degrees after long-time work, so that the clamping stability of the conical pipe is reduced, and the service life of the conical pipe is prolonged. Therefore, the problems of low applicability, poor clamping stability and short service life of the existing conical pipe clamp exist.
Disclosure of Invention
The invention aims to provide a movable pipe clamp of a conical pipe and a machining method. The clamping device has the characteristics of high applicability, good clamping stability and long service life.
The technical scheme of the invention is as follows: the utility model provides a toper pipe activity pipe clamp, including the locating plate, there is the spacing splint of L shape locating plate both sides through the screw connection, be equipped with the holder between the spacing splint of both sides, the holder lower extreme is equipped with spherical sliding seat, spherical sliding seat bottom and locating plate are laminated each other, the holder both ends are equipped with the cardboard of fixing on the locating plate, cardboard and spacing splint mutually perpendicular, holder top evenly distributed has a plurality of grip blocks, be equipped with 15 ~ 25 angle of inclination between grip block and the locating plate, the grip block tip is equipped with the V-arrangement top.
In the movable pipe clamp for the tapered pipe, the clamping block is made of 20 CrMnTi.
The processing method of the movable pipe clamp of the tapered pipe comprises the following steps:
①, putting the roughly processed clamping block blank into a carburizing furnace, heating the carburizing furnace to 900-920 ℃, keeping the temperature for 45-60 minutes, adding kerosene at a flow rate of 180-200 drops/minute with a carbon potential of 1.15-1.2% CP, keeping the furnace pressure at 25-28 Pa and the carburizing depth at 0.4-0.5 mm, cooling the carburizing furnace to 880-890 ℃, adding kerosene at a flow rate of 180-200 drops/minute with a carbon potential of 1-1.1% CP, keeping the furnace pressure at 25-28 Pa and the carburizing depth at 0.6-0.8 mm, diffusing for 40-60 minutes, cooling the carburizing furnace to 850-880 ℃, keeping the temperature for 45-60 minutes, and obtaining a product A;
② cooling the product A to 800-820 deg.C, and keeping the temperature for 8-15 min to obtain product B;
③ taking the product B out of the heating equipment, immersing the product B into quenching liquid at 100-130 ℃ for quenching, and then preserving heat for 20-35 minutes to obtain a product C;
④ taking out the product C from the quenching liquid, cooling in air to normal temperature to obtain product D;
⑤ putting the product D into the heating equipment again, then heating to 210-240 ℃, tempering the product D, and then preserving heat for 40-70 minutes to obtain a product E;
⑥ taking out the product E from the heating equipment, cooling to room temperature in air to obtain a clamping block;
⑦ fixing the clamping blocks on the clamping seats, placing the clamping seats with the clamping blocks on the positioning plate, and fixing the limiting clamping plates on the two sides of the positioning plate by screws to make the clamping seats between the limiting clamping plates on the two sides and the positioning plate to obtain the final product.
In the processing method of the movable pipe clamp of the conical pipe, the quenching liquid is prepared from the following raw materials in parts by weight: 30-50 parts of polyvinyl alcohol, 16-30 parts of acrylate, 1-4 parts of ethylenediamine, 2-5 parts of triethanolamine, 2-5 parts of a lubricant, 0.05-0.1 part of a fluorine silicon defoamer and 30-80 parts of water.
In the processing method of the movable pipe clamp of the conical pipe, the molecular weight of the polyvinyl alcohol is 16000-20000, and the concentration of the fluorine-silicon defoaming agent is 0.01-0.02%.
Compared with the prior art, the limiting clamp plate has the advantages that the limiting clamp plate is matched with the clamping plate, so that the clamping seat can be limited, and the clamping seat can be stably arranged on the positioning plate after being installed and during working; through the structural matching of the spherical movable seat and the positioning plate, the clamping seat can rotate on the positioning plate along any angle, so that the clamping seat can be adjusted on two degrees of freedom along with the clamping position and the inclination angle of the conical pipe during clamping, each clamping block on the clamping seat can be ensured to be mutually attached to the inner wall of the conical pipe during clamping, and the applicability and the clamping effect of the invention are improved in a limiting manner to the maximum extent; the contact area between the clamping block and the inner wall of the conical pipe during clamping can be increased through the V-shaped tip at the end part of the clamping block, so that the clamping effect on the conical pipe is improved, the effect of the V-shaped tip can be further improved through the inclination angle between the clamping block and the clamping seat, and the clamping block can be close to a vertical state after inclined clamping, so that the clamping effect on the conical pipe is further improved; the invention also sets corresponding materials and processing conditions according to the working characteristics of the clamping block, so that the surface hardness of the clamping block after quenching and carburizing can reach 62-65, and the clamping block has good wear resistance, thereby having good clamping stability and long service life. In addition, the invention also sets corresponding quenching liquid according to the hardness requirement and the process characteristic of the clamping block, thereby further improving the quenching effect and simultaneously improving the deformation and the hardening crack phenomena of the clamping block in the quenching process, and improving the yield of the clamping block to more than 98 percent. Therefore, the invention has the characteristics of high applicability, good clamping stability and long service life.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a right side sectional view of fig. 1.
The labels in the figures are: 1-a positioning plate, 2-a screw, 3-a limiting clamping plate, 4-a clamping seat, 5-a clamping plate, 401-a spherical movable seat, 402-a clamping block and 403-a V-shaped tip.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not to be construed as limiting the invention.
Examples are given. The utility model provides a taper pipe movable pipe clamp, constitute as shown in figure 1, including locating plate 1, 1 both sides of locating plate are connected with the spacing splint 3 of L shape through screw 2, be equipped with holder 4 between the spacing splint 3 of both sides, 4 lower extremes of holder are equipped with spherical sliding seat 401, spherical sliding seat 401 bottom is laminated with locating plate 1 each other, 4 both ends of holder are equipped with the cardboard 5 of fixing on locating plate 1, cardboard 5 and spacing splint 3 mutually perpendicular, 4 top evenly distributed of holder have a plurality of grip blocks 402, be equipped with 15 ~ 25 angle of inclination between grip block 402 and the locating plate 1, grip block 402 tip is equipped with the top 403 of V-arrangement.
The clamping block 402 is made of 20 CrMnTi.
The processing method of the movable pipe clamp of the conical pipe comprises the following steps: the method comprises the following steps:
①, putting the roughly processed clamping block blank into a carburizing furnace, heating the carburizing furnace to 900-920 ℃, keeping the temperature for 45-60 minutes, adding kerosene at a flow rate of 180-200 drops/minute with a carbon potential of 1.15-1.2% CP, keeping the furnace pressure at 25-28 Pa and the carburizing depth at 0.4-0.5 mm, cooling the carburizing furnace to 880-890 ℃, adding kerosene at a flow rate of 180-200 drops/minute with a carbon potential of 1-1.1% CP, keeping the furnace pressure at 25-28 Pa and the carburizing depth at 0.6-0.8 mm, diffusing for 40-60 minutes, cooling the carburizing furnace to 850-880 ℃, keeping the temperature for 45-60 minutes, and obtaining a product A;
② cooling the product A to 800-820 deg.C, and keeping the temperature for 8-15 min to obtain product B;
③ taking the product B out of the heating equipment, immersing the product B into quenching liquid at 100-130 ℃ for quenching, and then preserving heat for 20-35 minutes to obtain a product C;
④ taking out the product C from the quenching liquid, cooling in air to normal temperature to obtain product D;
⑤ putting the product D into the heating equipment again, then heating to 210-240 ℃, tempering the product D, and then preserving heat for 40-70 minutes to obtain a product E;
⑥ taking out the product E from the heating equipment, cooling to room temperature in air to obtain a clamping block;
⑦ fixing the clamping blocks on the clamping seats, placing the clamping seats with the clamping blocks on the positioning plate, and fixing the limiting clamping plates on the two sides of the positioning plate by screws to make the clamping seats between the limiting clamping plates on the two sides and the positioning plate to obtain the final product.
The quenching liquid is prepared from the following raw materials in parts by weight: 30-50 parts of polyvinyl alcohol, 16-30 parts of acrylate, 1-4 parts of ethylenediamine, 2-5 parts of triethanolamine, 2-5 parts of a lubricant, 0.05-0.1 part of a fluorine silicon defoamer and 30-80 parts of water.
The molecular weight of the polyvinyl alcohol is 16000-20000, and the concentration of the fluorine-silicon defoaming agent is 0.01-0.02%.
The working principle of the invention is as follows: the clamping block 402 is connected and fixed with the clamping seat 4 after quenching and carburizing, the clamping seat 4 can adopt a split type installation mode, and the clamping block 402 is placed in the clamping seat 4 and then the clamping block 402 is fixed by mutually welding the clamping seat 4; the processing technology and parameters of the clamping block 402 can ensure that the clamping block 402 has good hardness and wear resistance after heat treatment, thereby improving the clamping effect on the tapered pipe and prolonging the service life. After the clamping blocks 402 are installed, the clamping seats 4 are placed on the positioning plate 1, the clamping seats 4 are located between the clamping plates 5 on the two sides, then the limiting clamping plates 3 are fixed on the two sides of the clamping seats 4 through the screws 2, the clamping seats 4 can be limited transversely and longitudinally through the limiting clamping plates 3 and the clamping plates 5, the clamping seats 4 can freely rotate and incline after being installed through the mutual attachment of the spherical movable seat 401 and the positioning plate 1, so that the clamping blocks 402 can be freely adjusted along with the inclination angle of the inner wall of the conical pipe during clamping, and the clamping blocks 402 can be guaranteed to be attached to the inner wall of the conical pipe during clamping, and the conical pipe clamping device can be suitable for conical pipes of different types and has a good clamping effect.
Example 1. The utility model provides a bell pipe movable pipe clamp, including locating plate 1, 1 both sides of locating plate are connected with the spacing splint 3 of L shape through screw 2, be equipped with holder 4 between the spacing splint 3 of both sides, 4 lower extremes of holder are equipped with spherical sliding seat 401, spherical sliding seat 401 bottom is laminated with locating plate 1 each other, 4 both ends of holder are equipped with the cardboard 5 of fixing on locating plate 1, cardboard 5 and 3 mutually perpendicular of spacing splint, 4 top evenly distributed of holder have a plurality of grip blocks 402, be equipped with 15 angle of inclination between grip block 402 and the locating plate 1, grip block 402 tip is equipped with the top 403 of V-arrangement.
The clamping block 402 is made of 20 CrMnTi.
The processing method of the movable pipe clamp of the conical pipe comprises the following steps: the method comprises the following steps:
① placing the rough processed clamping block blank into a carburizing furnace, heating the carburizing furnace to 900 ℃, keeping the temperature for 60 minutes, adding kerosene at a flow rate of 180 drops/minute, wherein the carbon potential is 1.15% CP, the furnace pressure is kept at 28Pa, the carburizing depth is 0.4mm, cooling the carburizing furnace to 880 ℃, adding kerosene at a flow rate of 200 drops/minute, the carbon potential is 1% CP, the furnace pressure is kept at 28Pa, the carburizing depth is 0.6mm, the diffusion time is 60 minutes, cooling the carburizing furnace to 850 ℃, keeping the temperature for 60 minutes, and obtaining a product A;
② cooling product A to 800 deg.C, and keeping the temperature for 15 min to obtain product B;
③ taking out the product B from the heating equipment, immersing the product B into a quenching liquid at 100 ℃ for quenching, and then keeping the temperature for 35 minutes to obtain a product C, wherein the quenching liquid is prepared from the following raw materials, by weight, 30 parts of polyvinyl alcohol, 30 parts of acrylic ester, 1 part of ethylenediamine, 5 parts of triethanolamine, 2 parts of a lubricant, 0.1 part of a fluorine silicon defoaming agent and 30 parts of water, the molecular weight of the polyvinyl alcohol is 20000, and the concentration of the fluorine silicon defoaming agent is 0.01;
④ taking out the product C from the quenching liquid, cooling in air to normal temperature to obtain product D;
⑤ putting the product D into the heating equipment again, then heating to 240 ℃, tempering the product D, and then keeping the temperature for 40 minutes to obtain a product E;
⑥ taking out the product E from the heating equipment, cooling to room temperature in air to obtain a clamping block;
⑦ fixing the clamping blocks on the clamping seats, placing the clamping seats with the clamping blocks on the positioning plate, and fixing the limiting clamping plates on the two sides of the positioning plate by screws to make the clamping seats between the limiting clamping plates on the two sides and the positioning plate to obtain the final product.
Example 2. The utility model provides a toper pipe movable pipe clamp, including locating plate 1, 1 both sides of locating plate are connected with the spacing splint 3 of L shape through screw 2, be equipped with holder 4 between the spacing splint 3 of both sides, 4 lower extremes of holder are equipped with spherical sliding seat 401, spherical sliding seat 401 bottom is laminated with locating plate 1 each other, 4 both ends of holder are equipped with the cardboard 5 of fixing on locating plate 1, cardboard 5 and 3 mutually perpendicular of spacing splint, 4 top evenly distributed of holder have a plurality of grip blocks 402, be equipped with 25 angle of inclination between grip block 402 and the locating plate 1, grip block 402 tip is equipped with the top 403 of V-arrangement.
The clamping block 402 is made of 20 CrMnTi.
The processing method of the movable pipe clamp of the conical pipe comprises the following steps: the method comprises the following steps:
① placing the rough processed clamping block blank into a carburizing furnace, heating the carburizing furnace to 920 ℃, keeping the temperature for 45 minutes, adding kerosene at the flow rate of 200 drops/minute, the carbon potential being 1.2% CP, the furnace pressure being 25Pa and the carburizing depth being 0.5mm, cooling the carburizing furnace to 890 ℃, adding kerosene at the flow rate of 180 drops/minute, the carbon potential being 1.1% CP, the furnace pressure being 25Pa and the carburizing depth being 0.8mm, the diffusion time being 40 minutes, cooling the carburizing furnace to 880 ℃, and keeping the temperature for 45 minutes to obtain A product;
② cooling product A to 820 deg.C, and keeping the temperature for 8 min to obtain product B;
③ taking the product B out of the heating equipment, immersing the product B into quenching liquid at 130 ℃ for quenching, and then keeping the temperature for 20 minutes to obtain a product C, wherein the quenching liquid is prepared from 50 parts by weight of polyvinyl alcohol, 16 parts by weight of acrylic ester, 4 parts by weight of ethylenediamine, 2 parts by weight of triethanolamine, 5 parts by weight of lubricant, 0.05 part by weight of fluorine silicon defoamer and 80 parts by weight of water, the molecular weight of the polyvinyl alcohol is 16000, and the concentration of the fluorine silicon defoamer is 0.02%;
④ taking out the product C from the quenching liquid, cooling in air to normal temperature to obtain product D;
⑤ putting the product D into the heating equipment again, then heating to 210 ℃, tempering the product D, and then keeping the temperature for 70 minutes to obtain a product E;
⑥ taking out the product E from the heating equipment, cooling to room temperature in air to obtain a clamping block;
⑦ fixing the clamping blocks on the clamping seats, placing the clamping seats with the clamping blocks on the positioning plate, and fixing the limiting clamping plates on the two sides of the positioning plate by screws to make the clamping seats between the limiting clamping plates on the two sides and the positioning plate to obtain the final product.
Example 3. The utility model provides a toper pipe movable pipe clamp, including locating plate 1, 1 both sides of locating plate are connected with the spacing splint 3 of L shape through screw 2, be equipped with holder 4 between the spacing splint 3 of both sides, 4 lower extremes of holder are equipped with spherical sliding seat 401, spherical sliding seat 401 bottom is laminated with locating plate 1 each other, 4 both ends of holder are equipped with the cardboard 5 of fixing on locating plate 1, cardboard 5 and 3 mutually perpendicular of spacing splint, 4 top evenly distributed of holder have a plurality of grip blocks 402, be equipped with 20 angle of inclination between grip block 402 and the locating plate 1, grip block 402 tip is equipped with the top 403 of V-arrangement.
The clamping block 402 is made of 20 CrMnTi.
The processing method of the movable pipe clamp of the conical pipe comprises the following steps:
① placing the rough-processed clamping block blank into a carburizing furnace, heating the carburizing furnace to 910 ℃, keeping the temperature for 50 minutes, adding kerosene at a flow rate of 190 drops/minute, wherein the carbon potential is 1.18% CP, the furnace pressure is kept at 26Pa, the carburizing depth is 0.45mm, cooling the carburizing furnace to 880 ℃, adding kerosene at a flow rate of 190 drops/minute, the carbon potential is 1.05% CP, the furnace pressure is kept at 26Pa, the carburizing depth is 0.7mm, the diffusion time is 50 minutes, cooling the furnace to 870 ℃, and keeping the temperature for 50 minutes to obtain a product A;
② cooling product A to 810 deg.C, and keeping the temperature for 12 min to obtain product B;
③, taking the product B out of the heating equipment, immersing the product B into quenching liquid at 115 ℃ for quenching, and then keeping the temperature for 30 minutes to obtain a product C, wherein the quenching liquid is prepared from the following raw materials, by weight, 40 parts of polyvinyl alcohol, 20 parts of acrylic ester, 2 parts of ethylenediamine, 4 parts of triethanolamine, 4 parts of a lubricant, 0.08 part of a fluorine silicon defoaming agent and 60 parts of water, the molecular weight of the polyvinyl alcohol is 18000, and the concentration of the fluorine silicon defoaming agent is 0.015%;
④ taking out the product C from the quenching liquid, cooling in air to normal temperature to obtain product D;
⑤ putting the product D into the heating equipment again, then tempering the product D after heating to 230 ℃, and then keeping the temperature for 60 minutes to obtain a product E;
⑥ taking out the product E from the heating equipment, cooling to room temperature in air to obtain a clamping block;
⑦ fixing the clamping blocks on the clamping seats, placing the clamping seats with the clamping blocks on the positioning plate, and fixing the limiting clamping plates on the two sides of the positioning plate by screws to make the clamping seats between the limiting clamping plates on the two sides and the positioning plate to obtain the final product.
Claims (5)
1. The utility model provides a toper pipe activity pipe clamp which characterized in that: including locating plate (1), locating plate (1) both sides are connected with spacing splint (3) of L shape through screw (2), be equipped with holder (4) between spacing splint (3) of both sides, holder (4) lower extreme is equipped with spherical sliding seat (401), spherical sliding seat (401) bottom is laminated with locating plate (1) each other, holder (4) both ends are equipped with cardboard (5) of fixing on locating plate (1), cardboard (5) and spacing splint (3) mutually perpendicular, holder (4) top evenly distributed has a plurality of grip blocks (402), be equipped with 50 ~ 55 angle of inclination between grip block (402) and locating plate (1), grip block (402) tip is equipped with top (403) of V-arrangement.
2. The tapered tube movable tube clamp as defined in claim 1, wherein: the clamping block (402) is made of 20 CrMnTi.
3. A method for manufacturing a movable pipe clamp of a tapered pipe according to claim 2, wherein the method comprises the following steps: the method comprises the following steps:
①, putting the roughly processed clamping block blank into a carburizing furnace, heating the carburizing furnace to 900-920 ℃, keeping the temperature for 45-60 minutes, adding kerosene at a flow rate of 180-200 drops/minute with a carbon potential of 1.15-1.2% CP, keeping the furnace pressure at 25-28 Pa and the carburizing depth at 0.4-0.5 mm, cooling the carburizing furnace to 880-890 ℃, adding kerosene at a flow rate of 180-200 drops/minute with a carbon potential of 1-1.1% CP, keeping the furnace pressure at 25-28 Pa and the carburizing depth at 0.6-0.8 mm, diffusing for 40-60 minutes, cooling the carburizing furnace to 850-880 ℃, keeping the temperature for 45-60 minutes, and obtaining a product A;
② cooling the product A to 800-820 deg.C, and keeping the temperature for 8-15 min to obtain product B;
③ taking the product B out of the heating equipment, immersing the product B into quenching liquid at 100-130 ℃ for quenching, and then preserving heat for 20-35 minutes to obtain a product C;
④ taking out the product C from the quenching liquid, cooling in air to normal temperature to obtain product D;
⑤ putting the product D into the heating equipment again, then heating to 210-240 ℃, tempering the product D, and then preserving heat for 40-70 minutes to obtain a product E;
⑥ taking out the product E from the heating equipment, cooling to room temperature in air to obtain a clamping block;
⑦ fixing the clamping blocks on the clamping seats, placing the clamping seats with the clamping blocks on the positioning plate, and fixing the limiting clamping plates on the two sides of the positioning plate by screws to make the clamping seats between the limiting clamping plates on the two sides and the positioning plate to obtain the final product.
4. The processing method of the tapered tube movable tube clamp as claimed in claim 3, wherein the processing method comprises the following steps: the quenching liquid is prepared from the following raw materials in parts by weight: 30-50 parts of polyvinyl alcohol, 16-30 parts of acrylate, 1-4 parts of ethylenediamine, 2-5 parts of triethanolamine, 2-5 parts of a lubricant, 0.05-0.1 part of a fluorine silicon defoamer and 30-80 parts of water.
5. The processing method of the tapered tube movable tube clamp as claimed in claim 4, wherein the processing method comprises the following steps: the molecular weight of the polyvinyl alcohol is 16000-20000, and the concentration of the fluorine-silicon defoaming agent is 0.01-0.02%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810396721.7A CN109850755B (en) | 2018-04-28 | 2018-04-28 | Movable pipe clamp of conical pipe and machining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810396721.7A CN109850755B (en) | 2018-04-28 | 2018-04-28 | Movable pipe clamp of conical pipe and machining method |
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| Publication Number | Publication Date |
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| CN109850755A CN109850755A (en) | 2019-06-07 |
| CN109850755B true CN109850755B (en) | 2020-03-27 |
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| CN201810396721.7A Expired - Fee Related CN109850755B (en) | 2018-04-28 | 2018-04-28 | Movable pipe clamp of conical pipe and machining method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4285538A (en) * | 1980-04-10 | 1981-08-25 | Luke Raymond J | Flue lining installation tool |
| CN2434290Y (en) * | 2000-04-20 | 2001-06-13 | 上海三菱电梯有限公司 | Self-locking hoisting implement for lifting shafts |
| CN102099542A (en) * | 2008-07-18 | 2011-06-15 | 诺埃提克技术公司 | Tricam axial extension to provide gripping tool with improved operational range and capacity |
| CN102203361A (en) * | 2008-10-23 | 2011-09-28 | 奥贝里克斯控股有限公司 | A lifting device and method for concrete elements |
| CN104831290A (en) * | 2015-05-11 | 2015-08-12 | 柳州金盾机械有限公司 | Carburizing and quenching process of straight-tooth cylindrical gear |
-
2018
- 2018-04-28 CN CN201810396721.7A patent/CN109850755B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4285538A (en) * | 1980-04-10 | 1981-08-25 | Luke Raymond J | Flue lining installation tool |
| CN2434290Y (en) * | 2000-04-20 | 2001-06-13 | 上海三菱电梯有限公司 | Self-locking hoisting implement for lifting shafts |
| CN102099542A (en) * | 2008-07-18 | 2011-06-15 | 诺埃提克技术公司 | Tricam axial extension to provide gripping tool with improved operational range and capacity |
| CN102203361A (en) * | 2008-10-23 | 2011-09-28 | 奥贝里克斯控股有限公司 | A lifting device and method for concrete elements |
| CN104831290A (en) * | 2015-05-11 | 2015-08-12 | 柳州金盾机械有限公司 | Carburizing and quenching process of straight-tooth cylindrical gear |
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