CN113007256A - Split type hydraulic damper easy to replace and maintain - Google Patents
Split type hydraulic damper easy to replace and maintain Download PDFInfo
- Publication number
- CN113007256A CN113007256A CN202110155887.1A CN202110155887A CN113007256A CN 113007256 A CN113007256 A CN 113007256A CN 202110155887 A CN202110155887 A CN 202110155887A CN 113007256 A CN113007256 A CN 113007256A
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- pipe
- piston
- hydraulic damper
- connecting plate
- side wall
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
- F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
- F16F9/19—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein with a single cylinder and of single-tube type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3214—Constructional features of pistons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/56—Means for adjusting the length of, or for locking, the spring or damper, e.g. at the end of the stroke
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention discloses a split type hydraulic damper easy to replace and maintain, which comprises an oil cylinder, a piston rod, a piston, a first connecting piece and a second connecting piece, wherein an annular seat is integrally formed at the bottom of the oil cylinder, a mounting groove is formed in the inner side wall of the annular seat, the mounting groove does not completely penetrate through the side wall of the oil cylinder, four layers of mounting grooves are arranged on the annular seat, and eight mounting grooves are arranged on each layer at equal intervals; set up annular seat and seted up the mounting groove on annular seat's inside wall through the back position department of leaning on at the hydro-cylinder inside wall, and set up by secondary piston among the notch of mounting groove, supporting component, first connecting plate and the combination of second connecting plate constitute piston assembly, thereby pass through piston assembly's effect, thereby unload hydraulic damper in its hydro-cylinder inside too big pressure of atress initial stage, thereby let hydraulic damper hydro-cylinder inside hydraulic change more even, thereby improve its holistic in-service use effect.
Description
Technical Field
The invention relates to the technical field of hydraulic dampers, in particular to a split type hydraulic damper easy to replace and maintain.
Background
The hydraulic damper is a hydraulic feed speed control device which can freely adjust the feed speed of the cylinder from low speed to high speed within a desired range. The control mode comprises two types of A spring return type (RB type) and an air return type (R-A type), which can be selected according to the application, and the damper is A device for providing resistance to movement and consuming movement energy. It is not a new technology to absorb energy and shock by damping, and various dampers (or shock absorbers) have been used for reducing vibration and dissipating energy in the industries of aerospace, aviation, war industry, firearms, automobiles and the like. Since the seventies of the twentieth century, people gradually transferred the technologies to structural engineering such as buildings, bridges, railways and the like, and the development of the technologies is very rapid. Especially, the hydraulic viscous damper with history of more than fifty years is subjected to a great amount of experiments, strict examination and repeated demonstration before being accepted by the structural engineering world in the United states, especially a long process of earthquake examination;
but traditional hydraulic damper, its structure is comparatively simple to when leading to its actual use, its effect is general, and its mounting structure of traditional hydraulic damper is comparatively complicated, thereby leads to its whole installation effectiveness slower.
Disclosure of Invention
The invention aims to provide a split hydraulic damper easy to replace and maintain, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a split type hydraulic damper easy to replace and maintain comprises an oil cylinder, a piston rod, a piston, a first connecting piece and a second connecting piece, wherein an annular seat is integrally formed at the position of the bottom of the oil cylinder, a mounting groove is formed in the inner side wall of the annular seat, the mounting groove does not completely penetrate through the side wall of the oil cylinder, four layers of mounting grooves are arranged on the annular seat, eight layers of mounting grooves are arranged at equal intervals, a piston assembly is fixedly mounted in each layer of the mounting groove, the bottom surface of one mounting groove is a side wall which completely penetrates through the oil cylinder to form an oil hole, an oil pipe is connected to the position, located at the oil hole, of the outer side wall of the oil cylinder, the other end of the oil pipe is connected with an oil tank, the first connecting piece is formed by combining a first connecting pipe, a second connecting pipe, a connecting screw rod and a connecting, be integrated into one piece between second connecting pipe and the connecting seat, and seted up first internal thread and second internal thread on the lumen lateral wall of first connecting pipe, second connecting pipe respectively, and connecting screw's middle part fixed welding has adjusting nut, and connecting screw is located the body of rod of adjusting nut both sides and has seted up first external screw thread and second external screw thread respectively, and connecting screw is for being connected with first connecting pipe, second connecting pipe respectively through first external screw thread, second external screw thread.
Preferably, first external screw thread on the connecting screw rod, second external screw thread are positive screw thread, and install first fixation nut and second fixation nut on the body of rod at first external screw thread, second external screw thread position on the connecting screw rod respectively, and first fixation nut, second fixation nut offset the setting with first connecting pipe, second connecting pipe respectively.
Preferably, the structure of the second connecting piece is the same as that of the first connecting piece, and the second connecting piece and the first connecting piece are symmetrically arranged.
Preferably, the piston assembly is composed of a secondary piston, a supporting assembly, a first connecting plate and a second connecting plate in a combined mode, the supporting assembly is connected with the back face of the secondary piston through the first connecting plate, and the other end of the supporting assembly is connected with the bottom face of the notch of the mounting groove through the second connecting plate.
Preferably, the front side surface of the secondary piston is an inwards concave arc-shaped surface, the radian of the surface of the secondary piston is matched with the radian of the side wall of the mounting groove, and when the supporting assembly is in a reset state, the surface of the secondary piston is flush with the side wall of the mounting groove.
Preferably, the supporting component is composed of a first telescopic pipe, a second telescopic pipe, a first return spring and a second return spring in a combined mode, the outer diameter of the first telescopic pipe is matched with the inner diameter of the second telescopic pipe, the second telescopic pipe is movably sleeved on the first telescopic pipe, the first telescopic pipe is connected with the first connecting plate, the second telescopic pipe is connected with the second connecting plate, and the two ends of the first return spring and the two ends of the second return spring are equally connected with the first connecting plate and the second connecting plate respectively.
Compared with the prior art, the invention has the beneficial effects that:
1. the annular seat is arranged at the position close to the rear end of the inner side wall of the oil cylinder, the mounting groove is formed in the inner side wall of the annular seat, and the secondary piston, the supporting component, the first connecting plate and the second connecting plate are arranged in the notch of the mounting groove to form a piston component in a combined mode, so that the overlarge pressure in the oil cylinder of the hydraulic damper at the initial stress stage is unloaded under the action of the piston component, the hydraulic pressure in the oil cylinder of the hydraulic damper is changed more uniformly, and the integral actual using effect of the hydraulic damper is improved;
2. the support assembly on the piston assembly is formed by combining the first telescopic pipe, the second telescopic pipe, the first return spring and the second return spring, so that the first return spring and the second return spring jointly support the piston assembly, and the return support strength of the support assembly on the piston assembly to the secondary piston is effectively improved;
3. the connecting piece is composed of the first connecting pipe, the second connecting pipe, the connecting screw rod and the connecting seat in a combined mode, so that the first connecting pipe and the second connecting pipe are connected through the first external threads and the second external threads at the two ends of the connecting screw rod, the connecting distance between the first connecting pipe and the second connecting pipe is adjustable, and the connecting flexibility between the first connecting pipe and the second connecting pipe is effectively improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a half sectional view of the present invention;
FIG. 3 is an enlarged view of the structure at A in FIG. 2;
FIG. 4 is a half sectional view of the first connector;
FIG. 5 is a half sectional view of the piston assembly;
fig. 6 is an enlarged view of the structure at B in fig. 5.
In the figure: the oil cylinder comprises an oil cylinder 1, a piston rod 2, a first connecting piece 3, a second connecting piece 4, a piston 5, an annular seat 6, a mounting groove 7, a piston assembly 8, an oil hole 9, an oil pipe 10, a secondary piston 11, a supporting assembly 12, a first connecting plate 13, a second connecting plate 14, a first telescopic pipe 16, a second telescopic pipe 17, a first return spring 18, a second return spring 19, a first connecting pipe 20, a second connecting pipe 21, a connecting screw 22, a connecting seat 23, an adjusting nut 24, a first fixing nut 25 and a second fixing nut 26.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, the present invention provides a technical solution: a split type hydraulic damper easy to replace and maintain comprises an oil cylinder 1, a piston rod 2, a piston 5, a first connecting piece 3 and a second connecting piece 4, wherein an annular seat 6 is integrally formed at the bottom position of the oil cylinder 1, a mounting groove 7 is formed in the inner side wall of the annular seat 6, the mounting groove 7 does not completely penetrate through the side wall of the oil cylinder 1, four layers of the mounting grooves 7 are arranged on the annular seat 6, eight layers of the mounting grooves are arranged at equal intervals on each layer, piston assemblies 8 are fixedly mounted in notches of the mounting grooves 7, the bottom surface of one mounting groove 7 completely penetrates through the side wall of the oil cylinder 1 to form an oil hole 9, an oil pipe 10 is connected to the position, located at the oil hole 9, of the outer side wall of the oil cylinder 1, the other end of the oil pipe 10 is connected with an oil tank, the first connecting piece 3 is formed by combining a first connecting pipe 20, a second, the first connecting pipe 20 is fixedly welded with the oil cylinder 1, the second connecting pipe 21 and the connecting seat 23 are integrally formed, the side walls of the pipe cavities of the first connecting pipe 20 and the second connecting pipe 21 are respectively provided with a first internal thread and a second internal thread, the middle part of the connecting screw rod 22 is fixedly welded with an adjusting nut 24, the rod bodies of the connecting screw rod 22 positioned at the two sides of the adjusting nut 24 are respectively provided with a first external thread and a second external thread, the connecting screw rod 22 is respectively connected with the first connecting pipe 20 and the second connecting pipe 21 through the first external thread and the second external thread, the annular seat 6 is arranged at the position close to the rear end of the inner side wall of the oil cylinder 1, the inner side wall of the annular seat 6 is provided with an installation groove 7, and a piston assembly 8 which is formed by combining a secondary piston 11, a supporting assembly 12, a first connecting plate 13 and a second connecting plate, thereby through piston assembly 8's effect to unload the hydraulic damper at its hydro-cylinder 1 inside too big pressure of atress initial stage, thereby let hydraulic damper hydro-cylinder 1 inside hydraulic change more even, thereby improve its holistic in-service use effect.
Furthermore, the first external thread and the second external thread on the connecting screw 22 are both positive threads, the rod body at the positions of the first external thread and the second external thread on the connecting screw 22 is respectively provided with a first fixing nut 25 and a second fixing nut 26, the first fixing nut 25 and the second fixing nut 26 are respectively abutted against the first connecting pipe 20 and the second connecting pipe 21, and the connecting piece is formed by combining the first connecting pipe 20, the second connecting pipe 21, the connecting screw 22 and the connecting seat 23, so that the first external thread and the second external thread at the two ends of the connecting screw 22 are connected with the first connecting pipe 20 and the second connecting pipe 21, the connecting distance between the first connecting pipe 20 and the second connecting pipe 21 is adjustable, and the connecting flexibility between the first connecting pipe and the second connecting pipe is effectively improved;
further, the structure of the second connecting member 4 is the same as that of the first connecting member 3, and the two connecting members are symmetrically arranged.
Further, the piston assembly 8 is composed of a secondary piston 11, a support assembly 12, a first connecting plate 13 and a second connecting plate 14, the support assembly 12 is connected with the back surface of the secondary piston 11 through the first connecting plate 13, and the other end of the support assembly 12 is connected with the notch bottom surface of the mounting groove 7 through the second connecting plate 14.
Further, the front side surface of the secondary piston 11 is an inward concave arc surface, the radian of the surface of the secondary piston is matched with the radian of the side wall of the mounting groove 7, and when the supporting component 12 is in a reset state, the surface of the secondary piston 11 is flush with the side wall of the mounting groove 7.
Further, the support assembly 12 is composed of a first extension tube 16, a second extension tube 17, a first return spring 18 and a second return spring 19, the outer diameter of the first extension tube 16 is matched with the inner diameter of the second extension tube 17, the second extension tube 17 is movably sleeved on the first extension tube 16, and the first extension tube 16 is connected with the first connecting plate 13, and the second extension tube 17 is connected with the second connecting plate 14, and both ends of the first return spring 18 and the second return spring 19 are respectively connected with the first connecting plate 13 and the second connecting plate 14, by arranging the support assembly 12 on the piston assembly 8 to be composed of a combination of the first telescopic tube 16, the second telescopic tube 17, the first return spring 18 and the second return spring 19, the first return spring 18 and the second return spring 19 jointly support, so that the return supporting strength of the secondary piston 11 by the supporting assembly 12 on the piston assembly 8 is effectively improved.
The working principle is as follows: the annular seat 6 is arranged at the position close to the rear end of the inner side wall of the oil cylinder 1, the inner side wall of the annular seat 6 is provided with the mounting groove 7, the secondary piston 11, the supporting component 12, the first connecting plate 13 and the second connecting plate 14 are arranged in the notch of the mounting groove 7 to form the piston component 8 in a combined mode, so that the overlarge pressure in the oil cylinder 1 of the hydraulic damper at the initial stress stage is unloaded under the action of the piston component 8, the hydraulic pressure in the oil cylinder 1 of the hydraulic damper is changed more uniformly, the integral actual use effect of the hydraulic damper is improved, the supporting component 12 on the piston component 8 is formed by combining the first telescopic pipe 16, the second telescopic pipe 17, the first return spring 18 and the second return spring 19, the common supporting effect of the first return spring 18 and the second return spring 19 is achieved, and the return supporting strength of the supporting component 12 on the piston component 8 to the secondary piston 11 is effectively improved, the connecting piece is composed of the first connecting pipe 20, the second connecting pipe 21, the connecting screw rod 22 and the connecting seat 23 in a combined mode, so that the first connecting pipe 20 and the second connecting pipe 21 are connected through the first external thread and the second external thread at the two ends of the connecting screw rod 22, the connecting distance between the first connecting pipe 20 and the second connecting pipe 21 is adjustable, and the connecting flexibility between the three is effectively improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a split type hydraulic damper who easily changes maintenance, includes hydro-cylinder (1), piston rod (2), piston (5), first connecting piece (3) and second connecting piece (4), its characterized in that: the oil cylinder is characterized in that an annular seat (6) is integrally formed at the bottom position of the oil cylinder (1), mounting grooves (7) are formed in the inner side wall of the annular seat (6), the mounting grooves (7) do not completely penetrate through the side wall of the oil cylinder (1), four layers of the mounting grooves (7) are arranged on the annular seat (6), eight layers of the mounting grooves are arranged at equal intervals, piston assemblies (8) are fixedly mounted in notches of the mounting grooves (7), the bottom surface of one mounting groove (7) completely penetrates through the side wall of the oil cylinder (1) to form oil holes (9), oil pipes (10) are connected to positions, located on the oil holes (9), of the outer side wall of the oil cylinder (1), the other ends of the oil pipes (10) are connected with an oil tank, and the first connecting piece (3) is formed by combining a first connecting pipe (20), a second connecting pipe (21), a connecting screw rod (22) and a connecting seat (, first connecting pipe (20) and hydro-cylinder (1) fixed weld, be integrated into one piece between second connecting pipe (21) and connecting seat (23), and first internal thread and second internal thread have been seted up on the lumen lateral wall of first connecting pipe (20), second connecting pipe (21) respectively, and the fixed welding in middle part of connecting screw rod (22) has adjusting nut (24), and first external screw thread and second external screw thread have been seted up respectively on connecting screw rod (22) are located the body of rod of adjusting nut (24) both sides, and connecting screw rod (22) are for being connected with first connecting pipe (20), second connecting pipe (21) respectively through first external screw thread, second external screw thread.
2. The split hydraulic damper easy to replace and maintain according to claim 1, wherein: first external screw thread, second external screw thread on connecting screw rod (22) are positive screw thread, and install first fixation nut (25) and second fixation nut (26) on the body of rod at first external screw thread, second external screw thread position on connecting screw rod (22) respectively, and first fixation nut (25), second fixation nut (26) respectively with first connecting pipe (20), second connecting pipe (21) counterbalance setting.
3. The split hydraulic damper easy to replace and maintain according to claim 1, wherein: the structure of the second connecting piece (4) is the same as that of the first connecting piece (3), and the second connecting piece and the first connecting piece are symmetrically arranged.
4. The split hydraulic damper easy to replace and maintain according to claim 1, wherein: the piston assembly (8) is composed of a secondary piston (11), a supporting assembly (12), a first connecting plate (13) and a second connecting plate (14) in a combined mode, the supporting assembly (12) is connected with the back face of the secondary piston (11) through the first connecting plate (13), and the other end of the supporting assembly (12) is connected with the bottom face of a notch of the mounting groove (7) through the second connecting plate (14).
5. The split hydraulic damper easy to replace and maintain according to claim 4, wherein: the front side surface of the secondary piston (11) is an inwards concave arc-shaped surface, the radian of the surface of the secondary piston is matched with the radian of the side wall of the mounting groove (7), and when the supporting component (12) is in a reset state, the surface of the secondary piston (11) is flush with the side wall of the mounting groove (7).
6. The split hydraulic damper easy to replace and maintain according to claim 4, wherein: the support assembly (12) is formed by combining a first telescopic pipe (16), a second telescopic pipe (17), a first reset spring (18) and a second reset spring (19), the outer diameter of the first telescopic pipe (16) is matched with the inner diameter of the second telescopic pipe (17), the second telescopic pipe (17) is movably sleeved on the first telescopic pipe (16), the first telescopic pipe (16) is connected with a first connecting plate (13), the second telescopic pipe (17) is connected with a second connecting plate (14), and two ends of the first reset spring (18) and two ends of the second reset spring (19) are uniformly connected with the first connecting plate (13) and the second connecting plate (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110155887.1A CN113007256B (en) | 2021-02-04 | 2021-02-04 | Split type hydraulic damper easy to replace and maintain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110155887.1A CN113007256B (en) | 2021-02-04 | 2021-02-04 | Split type hydraulic damper easy to replace and maintain |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113007256A true CN113007256A (en) | 2021-06-22 |
| CN113007256B CN113007256B (en) | 2022-07-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110155887.1A Active CN113007256B (en) | 2021-02-04 | 2021-02-04 | Split type hydraulic damper easy to replace and maintain |
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| Country | Link |
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| CN (1) | CN113007256B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113896019A (en) * | 2021-10-08 | 2022-01-07 | 青岛铠硕机械科技有限公司 | Inside support of water jet loom compresses tightly distributing device |
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| CN109058352A (en) * | 2018-10-30 | 2018-12-21 | 江苏圣大中远电力科技有限公司 | A kind of simple suspension and support |
| CN111981077A (en) * | 2020-09-22 | 2020-11-24 | 苟林 | Active type variable volume voltage stabilizing shock absorber |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101029669A (en) * | 2007-03-31 | 2007-09-05 | 奇瑞汽车有限公司 | Variable damping shock absorber |
| CN104728325A (en) * | 2015-03-12 | 2015-06-24 | 优耐德电梯有限公司 | Combined type shock absorption device |
| CN105003578A (en) * | 2015-07-04 | 2015-10-28 | 安徽舒城华云弹簧制造有限公司 | Spring with stepped change elastic force |
| CN205064671U (en) * | 2015-09-22 | 2016-03-02 | 郑州精益达汽车零部件有限公司 | Holding power adjustable air spring |
| DE102016201862A1 (en) * | 2016-02-08 | 2017-08-10 | Zf Friedrichshafen Ag | Vibration damper with a compensation chamber |
| CN107061597A (en) * | 2017-03-21 | 2017-08-18 | 哈尔滨工程大学 | A kind of magnetorheological fluid damp vibration isolator |
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| CN109058352A (en) * | 2018-10-30 | 2018-12-21 | 江苏圣大中远电力科技有限公司 | A kind of simple suspension and support |
| CN111981077A (en) * | 2020-09-22 | 2020-11-24 | 苟林 | Active type variable volume voltage stabilizing shock absorber |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113896019A (en) * | 2021-10-08 | 2022-01-07 | 青岛铠硕机械科技有限公司 | Inside support of water jet loom compresses tightly distributing device |
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| Publication number | Publication date |
|---|---|
| CN113007256B (en) | 2022-07-19 |
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