CN116717647A - Quick dismounting mechanism for commercial vehicle cab and chassis air pipeline - Google Patents
Quick dismounting mechanism for commercial vehicle cab and chassis air pipeline Download PDFInfo
- Publication number
- CN116717647A CN116717647A CN202310983565.5A CN202310983565A CN116717647A CN 116717647 A CN116717647 A CN 116717647A CN 202310983565 A CN202310983565 A CN 202310983565A CN 116717647 A CN116717647 A CN 116717647A
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- pipeline
- cab
- chassis
- module
- joint
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- 230000007246 mechanism Effects 0.000 title claims abstract description 18
- 230000030279 gene silencing Effects 0.000 claims description 9
- 210000001503 joint Anatomy 0.000 description 16
- 238000000034 method Methods 0.000 description 10
- 230000008901 benefit Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L37/00—Couplings of the quick-acting type
- F16L37/28—Couplings of the quick-acting type with fluid cut-off means
- F16L37/38—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in only one of the two pipe-end fittings
- F16L37/46—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in only one of the two pipe-end fittings with a gate valve or sliding valve
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/08—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for fluid
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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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
Abstract
The application relates to a quick dismounting mechanism for a cab and a chassis air pipeline of a commercial vehicle, which comprises a cab pipeline, a joint module assembly, a chassis pipeline and a fixed bracket; the joint module assembly comprises an upper module and a lower module; one end of the cab pipeline is connected with the cab body, and the other end of the cab pipeline is connected with the upper module; the chassis pipeline one end is connected with the chassis body, and the other end is connected with lower module, lower module passes through the fixed bolster and is connected with the frame, go up the module and be connected with lower module can dismantle, be provided with gas circuit stop gear on the lower module.
Description
Technical Field
The application relates to the field of manufacturing and application of commercial vehicles, in particular to a quick dismounting mechanism for a cab and a chassis air pipeline of a commercial vehicle.
Background
Along with the further improvement of the industrial manufacturing automation level, the whole vehicle production efficiency of the vehicle enterprise is obviously improved. The assembly process of modular production brings considerable advantages and benefits in the manufacture of automobiles. In the existing commercial vehicle cab and chassis assembly process, after the cab and the chassis are firstly subjected to structural installation, corresponding pipelines are connected to valve bodies on a cab body one by one, so that the time consumption is long, the efficiency is low, the labor is high, the high-efficiency production beat requirement cannot be met, and the management of product consistency is not facilitated. Therefore, the method and the structure for connecting the cab and the chassis pipeline provide optimized lifting requirements, and a quick disassembly and assembly technology for the cab and the chassis pipeline is developed.
Meanwhile, automatic driving of commercial vehicles has become a development trend, and new operation mode requirements and diversified vehicle operation modes of the commercial vehicles bring more value benefits to customers. The same commercial vehicle can realize autonomous switching of two operation modes of manned operation and unmanned operation. Or realizing the rapid switching of two transportation modes of a cab and a no-cab. This requires that the propulsion cab assembly must be modular quick-release and quick-install. The quick assembly and disassembly of the cab and the chassis air pipeline is a core technology for realizing the modularized quick assembly and disassembly of the cab.
Disclosure of Invention
The application aims at overcoming the defects of the prior art, and provides a quick dismounting mechanism for a cab and a chassis air pipeline of a commercial vehicle, which solves the problem that the cab and the chassis air pipeline cannot be dismounted quickly.
The application is realized by adopting the following technical scheme:
a quick dismounting mechanism for a cab and a chassis air pipeline of a commercial vehicle comprises a cab pipeline, a joint module assembly, a fixed bracket and a chassis pipeline;
the joint module assembly comprises an upper module and a lower module; one end of the cab pipeline is connected with the cab body, and the other end of the cab pipeline is connected with the upper module; the chassis pipeline one end is connected with the chassis body, and the other end is connected with lower module, lower module passes through the fixed bolster and is connected with the frame, go up the module and be connected with lower module can dismantle, be provided with gas circuit stop gear on the lower module.
As further illustration of the application, the upper module comprises a connecting ring, a first fixing plate, a first joint component and a clamp spring; the first connector assembly comprises a plurality of first connectors, a plurality of second connectors and a plurality of third connectors;
the cab pipeline is connected with a first joint assembly, the first joint assembly is connected to a first fixed plate through a clamp spring, and the connecting ring is sleeved at the outer circle of the first fixed plate;
the inner side circumference of the connecting ring is provided with a plurality of arc-shaped convex groove blocks, and the outer side of the connecting ring is provided with a notch I.
As further illustration of the application, the lower module comprises a connecting plate, a second fixing plate, a second joint component, a spring, a baffle and a pin; the second joint assembly comprises a plurality of joints IV, a plurality of joints V and a plurality of joints VI;
the chassis pipeline is connected with a second joint assembly, the second joint assembly is connected to a second fixing plate in a threaded mode, and the second fixing plate is connected with the connecting plate;
the upper peripheral ring of the connecting plate is provided with a plurality of arc-shaped groove blocks matched with the arc-shaped convex groove blocks, and the outer side of the connecting plate is provided with a limit clamping groove; the connecting ring is rotationally connected with the connecting plate; one end of the pin sequentially penetrates through the baffle plate from left to right and is connected with the limiting clamping groove through the spring.
As further description of the application, the gas path stop mechanism comprises an annular sleeve, a slide valve and a valve core;
the slide valve is sleeved with an annular sleeve outside the slide valve; the top of the annular sleeve is provided with two notches II; the middle part of the annular sleeve is provided with a guide pin, the slide valve is provided with a guide groove, and the guide pin is in sliding connection with the guide groove.
As a further illustration of the application, the lower module further comprises a silencing screw;
the silencing screw rod sequentially penetrates through the second fixed plate and the sliding valve from bottom to top and is in threaded connection with the connecting plate.
As a further explanation of the application, the annular sleeve is provided with an air passage on-off indication mark and is positioned below the two notches II.
The technical scheme provided by the application has the beneficial effects that:
1. convenient and labor-saving: the pipeline joint module adopts a combination mode of quick plugging and quick pulling, a special tool is not needed in the disassembly and assembly process, the operation moment is small, free-hand disassembly and assembly are realized, and the operation is convenient and labor-saving;
2. economical and efficient: the pipeline joint module adopts the quick assembly and disassembly combination of the upper module and the lower module, the assembly and disassembly time is short, the connection time of the cab and the chassis pipeline is shortened, the time is saved, the efficiency is high, and the economic benefit is improved;
3. and (3) improving the sealing performance: the pipeline joint module adopts an assembly mode of combining an upper module and a lower module, and optimizes the plugging operation of single pipes which are required to be in bulk for a plurality of times into one-time installation operation between the upper module and the lower module; the assembly steps are reduced, the assembly efficiency is improved, the assembly consistency is ensured, and the sealing performance is improved.
Drawings
FIG. 1 is a schematic diagram of a connection state of a commercial vehicle cab and chassis air line according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a commercial vehicle cab separated from chassis air lines according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a connector module pack according to an embodiment of the present application in a disconnected state;
FIG. 4 is an exploded view of the upper module of an embodiment of the present application;
FIG. 5 is a schematic view of a connecting ring structure according to an embodiment of the present application;
FIG. 6 is an exploded view of the lower module of an embodiment of the present application;
FIG. 7 is a schematic diagram showing the appearance of a lower module according to an embodiment of the present application;
FIG. 8 is a schematic diagram showing ventilation status of the appearance of the lower module according to an embodiment of the present application;
FIG. 9 is a schematic view of a lower module hidden annular sleeve showing a gas outage state according to an embodiment of the present application;
FIG. 10 is a schematic view of a lower module hidden annular sleeve showing a vent state according to an embodiment of the present application;
FIG. 11 is a schematic view showing a gas-off state inside the lower module according to the embodiment of the present application;
fig. 12 is a schematic diagram showing a ventilation state inside the lower module according to the embodiment of the present application.
In the figure, 1, a cab pipeline; 2. a joint module assembly; 3. a fixed bracket; 4. a chassis pipeline;
2-1, upper module; 2-2, a lower module;
2-1-1, a connecting ring; 2-1-2, a first fixing plate; 2-1-3, joint one; 2-1-4, joint two; 2-1-5, joint III; 2-1-6, snap springs; 2-1-7, arc convex groove blocks; 2-1-8, notch I;
2-2-1, connecting plates; 2-2-2, spool valve; 2-2-3, valve core; 2-2-4, a second fixing plate; 2-2-5, and a joint IV; 2-2-6, joint five; 2-2-7, and a joint six; 2-2-8 parts of silencing screw rod; 2-2-9, annular sleeve; 2-2-10, springs; 2-2-11, a baffle; 2-2-12, pins; 2-2-13, arc groove blocks; 2-2-14, guide pins; 2-2-15, guiding groove.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
1-12, a quick disassembly and assembly mechanism for a cab and a chassis air pipeline of a commercial vehicle comprises a cab pipeline 1, a joint module assembly 2, a fixed bracket 3 and a chassis pipeline 4;
the joint module assembly 2 comprises an upper module 2-1 and a lower module 2-2; one end of a cab pipeline 1 is preassembled with the cab body, and the other end of the cab pipeline is connected with an upper module 2-1; one end of the chassis pipeline 4 is preassembled with the chassis body, the other end of the chassis pipeline is connected with the lower module 2-2, the lower module 2-2 is connected with the frame through the fixed bracket 3, the upper module 2-1 is detachably connected with the lower module 2-2, and the lower module 2-2 is provided with an air passage stop mechanism.
As shown in fig. 4 and 5, the upper module 2-1 comprises a connecting ring 2-1-1, a first fixing plate 2-1-2, a first joint component and a clamp spring 2-1-6; the first joint component comprises joints of different specifications which are correspondingly connected with the cab pipeline 1, and comprises a plurality of joints I2-1-3, a plurality of joints II 2-1-4 and a plurality of joints III 2-1-5, wherein in the embodiment, the first joint component specifically comprises two joints I2-1-3, three joints II 2-1-4 and one joint III 2-1-5; the cab pipeline 1 is connected with a first joint component, the first joint component is connected to a first fixed plate 2-1-2 through a clamp spring 2-1-6, and a connecting ring 2-1-1 is sleeved at the outer circle of the first fixed plate 2-1-2; the inner side circumference of the connecting ring 2-1-1 is uniformly provided with a plurality of arc-shaped convex groove blocks 2-1-7, and the outer side of the connecting ring 2-1-1 is provided with a notch I2-1-8.
As shown in fig. 6, the lower module 2-2 comprises a connecting plate 2-2-1, a second fixing plate 2-2-4, a second joint component, a spring 2-2-10, a baffle plate 2-2-11 and a pin 2-2-12; the second joint component comprises joints with different specifications, which are correspondingly connected with the chassis pipeline 4, and comprises a plurality of joints four 2-2-5, a plurality of joints five 2-2-6 and a plurality of joints six 2-2-7, and in the embodiment, the second joint component specifically comprises two joints four 2-2-5, three joints five 2-2-6 and one joint six 2-2-7;
the chassis pipeline 4 is connected with a second joint component, the second joint component is connected on a second fixing plate 2-2-4 in a threaded manner, and the second fixing plate 2-2-4 is connected with a connecting plate 2-2-1; a plurality of arc-shaped groove blocks 2-2-13 matched with the arc-shaped convex groove blocks 2-1-7 are uniformly arranged on the upper circumference of the connecting plate 2-2-1, and limit clamping grooves are formed in the outer side of the connecting plate 2-2-1; the connecting ring 2-1-1 is rotationally connected with the connecting plate 2-2-1; one end of the pin 2-2-12 penetrates through the baffle plate 2-2-11 and the spring 2-2-10 in sequence from left to right and is connected to the limiting clamping groove.
The working principle of the quick assembly disassembly of the upper module 2-1 and the lower module 2-2 is as follows:
after the joint of the upper module 2-1 and the lower module 2-2 is in butt joint, the baffle 2-2-11 on the lower module 2-2 is pressed down, the connecting ring 2-1-1 is rotated along the axial direction of the upper module 2-1, and the arc-shaped convex groove blocks 2-1-7 on the connecting ring 2-1-1 and the arc-shaped groove blocks 2-2-13 of the connecting plate 2-2-1 are axially assembled in a limiting mode; after the baffle plate 2-2-11 on the lower module 2-2 is aligned with the notch I2-1-8 at the excircle of the connecting ring 2-1, the baffle plate 2-2-11 is loosened, the baffle plate 2-2-11 is outwards popped up under the action of the spring 2-2-10 to prop against the inner wall of the notch I2-1-8, so that the limiting locking of the axial rotation of the connecting ring 2-1-1 is realized, and the connection reliability of the joint is ensured;
as shown in fig. 6, the air passage stop mechanism comprises an annular sleeve 2-2-9, a slide valve 2-2-2 and a valve core 2-2-3; the slide valve 2-2-2 is sleeved on the valve core 2-2-3, and the slide valve 2-2 is sleeved with the annular sleeve 2-2-9; the top of the annular sleeve 2-2-9 is provided with a notch II; the middle part of the annular sleeve 2-2-9 is provided with a guide pin 2-2-14, the slide valve 2-2 is provided with a guide groove 2-2-15, and the guide pin 2-2-14 is connected with the guide groove 2-2-15 in a sliding way.
As shown in fig. 6, the lower module 2-2 further includes a silencing screw 2-2-8; the silencing screw rod 2-2-8 sequentially penetrates through the fixed plate II 2-2-4 and the slide valve 2-2 from bottom to top and is in threaded connection with the connecting plate 2-2-1; the silencing screw rod 2-2-8 realizes the connection and installation of all parts of the lower module 2-2 and has a silencing function.
As shown in fig. 7 and 8, the swivel sleeve 2-2-9 is provided with an air path on-off indication mark and is positioned below the two notches two.
The upper and lower modules 2-2 have the unidirectional cut-off function of the air path, realize the cut-off and turn-on functions of the air path of the whole vehicle, and the working principle of the cut-off of the air path is as follows:
7, 9 and 11, when the annular sleeve 2-2-9 is rotated right in the direction indicated by the arrow, the guide pin 2-2-14 pushes the slide valve 2-2-2 to move downwards, and when the second notch (indicated as broken) on the annular sleeve 2-2-9 is aligned with the baffle plate 2-2-11, the slide valve 2-2 is at the lowest position, and at the moment, the air pressure is blocked at the position of the slide valve 2-2-2 and the valve core 2-3 according to the path indicated by the arrow and cannot continuously flow to the upper module joint, so that the disconnection between the chassis pipeline 4 and the cab pipeline 1 is realized; as shown in fig. 8, 10 and 12, when the annular sleeve 2-2-9 is rotated left in the direction indicated by the arrow, the guide pin 2-2-14 pushes the slide valve 2-2-2 to move upwards, and when the second opening on the annular sleeve 2-2-9 is aligned with the blocking piece 2-2-11, the slide valve 2-2 is at the uppermost position, and air pressure can circulate along the path indicated by the arrow, so that air path communication between the chassis pipeline 4 and the cab pipeline 1 is realized.
Description: the application can realize the quick disassembly and assembly of the cab and the chassis pipeline. The method has the following advantages:
1. convenient and labor-saving: the pipeline joint module adopts a combination mode of quick plugging and quick pulling, a special tool is not needed in the disassembly and assembly process, the operation torque is less than or equal to 5Nm, and the operation is convenient and labor-saving.
2. Economical and efficient: the pipeline joint module adopts the quick disassembly and assembly combination of the upper module and the lower module, and the disassembly and assembly time is less than or equal to 0.5 minute. The connection time between the cab and the chassis pipeline is shortened by 83%. The time is saved, the efficiency is high, and the economic benefit is improved.
3. And (3) improving the sealing performance: the pipeline joint module adopts an assembly mode of combining an upper module and a lower module, and optimizes the plugging operation of a single pipe which is required to be in bulk for 6 times into 1-time installation operation between the upper module and the lower module. The assembly steps are reduced by 83%, the assembly efficiency is improved, the assembly consistency is ensured, and the sealing performance is improved.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The quick dismounting mechanism for the cab and chassis air pipeline of the commercial vehicle is characterized by comprising a cab pipeline (1), a joint module assembly (2), a fixed bracket (3) and a chassis pipeline (4);
the joint module assembly (2) comprises an upper module (2-1) and a lower module (2-2); one end of the cab pipeline (1) is connected with the cab body, and the other end of the cab pipeline is connected with the upper module (2-1); one end of the chassis pipeline (4) is connected with the chassis body, the other end of the chassis pipeline is connected with the lower module (2-2), the lower module (2-2) is connected with the frame through the fixed support (3), the upper module (2-1) is detachably connected with the lower module (2-2), and the lower module (2-2) is provided with an air path stop mechanism.
2. The quick assembly disassembly mechanism for the cab and the chassis air pipeline of the commercial vehicle according to claim 1, wherein the upper module (2-1) comprises a connecting ring (2-1-1), a first fixing plate (2-1-2), a first joint component and a clamp spring (2-1-6); the first connector assembly comprises a plurality of first connectors (2-1-3), a plurality of second connectors (2-1-4) and a plurality of third connectors (2-1-5);
the cab pipeline (1) is connected with a first joint assembly, the first joint assembly is connected to a first fixed plate (2-1-2) through a clamp spring (2-1-6), and the connecting ring (2-1-1) is sleeved at the outer circle of the first fixed plate (2-1-2);
the connecting ring (2-1-1) is provided with a plurality of arc-shaped convex groove blocks (2-1-7) on the inner side circumference, and a notch I (2-1-8) is arranged on the outer side of the connecting ring (2-1-1).
3. The quick assembly disassembly mechanism for the cab and the chassis air pipeline of the commercial vehicle according to claim 2, wherein the lower module (2-2) comprises a connecting plate (2-2-1), a second fixing plate (2-2-4), a second joint component, a spring (2-2-10), a baffle (2-2-11) and a pin (2-2-12); the second joint component comprises a plurality of fourth joints (2-2-5), a plurality of fifth joints (2-2-6) and a plurality of sixth joints (2-2-7);
the chassis pipeline (4) is connected with a second joint assembly which is in threaded connection with a second fixing plate (2-2-4), and the second fixing plate (2-2-4) is connected with a connecting plate (2-2-1);
a plurality of arc-shaped groove blocks (2-2-13) matched with the arc-shaped convex groove blocks (2-1-7) are arranged on the upper circumference of the connecting plate (2-2-1), and limit clamping grooves are formed in the outer side of the connecting plate (2-2-1); the connecting ring (2-1-1) is rotationally connected with the connecting plate (2-2-1); one end of the pin (2-2-12) sequentially penetrates through the baffle (2-2-11) and the spring (2-2-10) from left to right to be connected to the limiting clamping groove.
4. The quick assembly disassembly mechanism for the cab and the chassis air pipeline of the commercial vehicle according to claim 3, wherein the air passage stop mechanism comprises an annular sleeve (2-2-9), a slide valve (2-2-2) and a valve core (2-2-3);
the slide valve (2-2-2) is sleeved on the valve core (2-2-3), and the slide valve (2-2-2) is sleeved with the annular sleeve (2-2-9); the top of the annular sleeve (2-2-9) is provided with two notches II; the middle part of the annular sleeve (2-2-9) is provided with a guide pin (2-2-14), the slide valve (2-2-2) is provided with a guide groove (2-2-15), and the guide pin (2-2-14) is in sliding connection with the guide groove (2-2-15).
5. The quick assembly disassembly mechanism for the cab and chassis air line of a commercial vehicle according to claim 4, wherein the lower module (2-2) further comprises a silencing screw (2-2-8);
the silencing screw rod (2-2-8) sequentially penetrates through the fixing plate II (2-2-4) and the slide valve (2-2-2) from bottom to top and then is in threaded connection with the connecting plate (2-2-1).
6. The quick assembly disassembly mechanism for the cab and the chassis air pipeline of the commercial vehicle according to claim 5, wherein the annular sleeve (2-2-9) is provided with an air passage on-off indication mark and is positioned below the two notches II.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310983565.5A CN116717647B (en) | 2023-08-07 | 2023-08-07 | Quick dismounting mechanism for commercial vehicle cab and chassis air pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310983565.5A CN116717647B (en) | 2023-08-07 | 2023-08-07 | Quick dismounting mechanism for commercial vehicle cab and chassis air pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116717647A true CN116717647A (en) | 2023-09-08 |
| CN116717647B CN116717647B (en) | 2023-10-27 |
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| CN202310983565.5A Active CN116717647B (en) | 2023-08-07 | 2023-08-07 | Quick dismounting mechanism for commercial vehicle cab and chassis air pipeline |
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| CN (1) | CN116717647B (en) |
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| CN210318976U (en) * | 2019-05-13 | 2020-04-14 | 张玲红 | PVC tubular product convenient to installation and dismantlement |
| CN213576119U (en) * | 2020-09-30 | 2021-06-29 | 上海晟江机械设备有限公司 | Female head of fire control pipeline meet soon |
| CN216479532U (en) * | 2021-12-17 | 2022-05-10 | 邱强生 | Quick connector with pressure relief function |
| CN218442634U (en) * | 2022-09-07 | 2023-02-03 | 安徽启联智能科技有限公司 | Variable-frequency ventilation control device |
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| CN116717647B (en) | 2023-10-27 |
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