CN116576338A - Rubber protective sleeve of automobile rubber brake hose and assembly equipment thereof - Google Patents
Rubber protective sleeve of automobile rubber brake hose and assembly equipment thereof Download PDFInfo
- Publication number
- CN116576338A CN116576338A CN202310176596.XA CN202310176596A CN116576338A CN 116576338 A CN116576338 A CN 116576338A CN 202310176596 A CN202310176596 A CN 202310176596A CN 116576338 A CN116576338 A CN 116576338A
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- Prior art keywords
- rubber
- telescopic
- protective sleeve
- rubber protective
- sleeve body
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- 230000001681 protective effect Effects 0.000 title claims abstract description 110
- 238000001125 extrusion Methods 0.000 claims description 47
- 238000013461 design Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000005484 gravity 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
- 238000004062 sedimentation Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/04—Arrangements of piping, valves in the piping, e.g. cut-off valves, couplings or air hoses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/18—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using tubular layers or sheathings
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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
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
-
- 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
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
- F16L57/04—Protection of pipes or objects of similar shape against external or internal damage or wear against fire or other external sources of extreme heat
-
- 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
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
- F16L57/06—Protection of pipes or objects of similar shape against external or internal damage or wear against wear
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Manufacturing & Machinery (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The invention relates to the technical field of automobile parts, in particular to a rubber protective sleeve of an automobile rubber brake hose, which belongs to energy-saving and cost-reducing safety protection and comprises the following components: when the conical expander is taken out, a worker resets the telescopic ring manually, and after the telescopic ring is reset, the elastic piece on the telescopic ring drives the telescopic block to shrink into the trapezoid groove; when the rubber protective sleeve body in the prior art is expanded, the rubber protective sleeve body is not extruded by the upper end, the problem that the rubber protective sleeve body is extruded and deformed occurs, and on the other hand, when the rubber protective sleeve body moves downwards through the conical expander, the rubber protective sleeve body cannot rub with the conical expander body, so that the reject ratio of the rubber protective sleeve body during production is reduced.
Description
Technical Field
The invention relates to the technical field of automobile parts, in particular to a rubber protective sleeve of an automobile rubber brake hose, which belongs to energy-saving and cost-reducing safety protection.
Background
In existing vehicle hydraulic brake systems, the brake hose is a channel for achieving rapid transfer of brake pressure. It is important to ensure the safety of the brake hose, but due to the complexity of the brake hose movement path. It is difficult to design a perfect hose path, for this purpose, one or more rubber protective sleeves with different lengths and outer diameters are added to the brake hose to avoid the hose from being worn and failed due to interference of other parts in a specific situation, and sometimes, the rubber protective sleeve is added to isolate the heat source of the engine to avoid the failure of the brake hose due to high temperature, so that the addition of the rubber protective sleeve to the hose is a general way of designing the brake hose path, and is also a design method with better cost performance.
The usual way of fixing the rubber protective sleeve on the hose is: 1. during assembly, glue is added between the brake hose and the rubber protective sleeve for fixation, but the design is influenced by temperature when being used for a long time, and causes performance decay to slide mutually; 2. the mould pressing is adopted on the brake hose, but the design can also age and slide mutually when being used for a long time, and the technology has high energy consumption; 3. the inner hole diameter of the rubber protective sleeve is smaller than the diameter of the brake hose in interference fit, friction resistance is generated by the action of the rubber resilience force of the rubber protective sleeve and the friction coefficient between the rubber brake hose and the rubber protective sleeve, but in the expansion assembly process of the circular inner hole rubber protective sleeve, the expansion size is more than 3 times of the product size, so that the protective sleeve is easy to crack; 4. during the assembly of the protective sleeve, an assembly liquid (the naphtha ratio is 70% gasoline and 30% ethanol) is required to be added, and the liquid has the problems of safety and environmental protection; 5. the water or other liquid is accumulated at the two ends of the protective sleeve to pollute the hose and the metal.
In summary, in order to solve the technical problems presented herein, the invention provides a rubber protective sleeve of an automobile rubber brake hose and an assembly device thereof.
Disclosure of Invention
In order to make up the defects of the prior art, the invention provides a rubber protective sleeve of an automobile rubber brake hose and assembly equipment thereof, so as to solve the technical problems.
The technical scheme adopted for solving the technical problems is as follows: the rubber protective sleeve of the automobile rubber brake hose comprises a rubber protective sleeve body and further comprises a rubber protective sleeve body;
an inner hole is axially penetrated in the rubber protective sleeve body, eight axial helical teeth and axial grooves are uniformly distributed on the outer edge of the inner hole, and the axial helical teeth are in an inclined plane shape; the rubber protective sleeve body, the inner hole and the axial groove are integrally vulcanized by rubber.
Further, the width of the axial grooves is 1-2 mm, the depth of the axial grooves is 1-3 mm, and at least 8 groups of axial grooves are uniformly distributed on the inner hole.
Further, the stress process is as follows:
the rubber brake hose is in interference fit with the rubber protective sleeve body;
under the action of external force F, the outer surface of the rubber protective sleeve body at the stress point is assumed to be the A position, and the force for preventing the rubber protective sleeve body from moving force is friction force Fu and resistance Fdz generated after the hose is deformed;
the moving resistance of the assembled rubber protective sleeve body is the sum of the friction force Fu and the resistance Fdz generated by the extrusion deformation of the rubber hose by the axial helical teeth.
The automobile rubber brake hose assembly equipment is suitable for the rubber protective sleeve of the automobile rubber brake hose, and comprises an equipment bracket and an equipment chassis; the equipment chassis is arranged on the equipment bracket,
a groove is formed in the center of the upper end of the equipment chassis, and a hydraulic system is arranged in the groove; the upper end of the equipment chassis is fixedly provided with a pushing pipe through a bolt, the inside of the pushing pipe is connected with an expansion sleeve in a sliding manner, the expansion sleeve is connected with a hydraulic system, the hydraulic system realizes that the expansion sleeve stretches and contracts in the pushing pipe, and the expansion sleeve is uniformly provided with the same number of placing grooves as the inner holes;
the expansion sleeve is movably arranged above the expansion sleeve, a trapezoid groove is formed in the middle of the expansion sleeve, and the trapezoid groove is positioned at the transition part of the upper conical edge of the expansion sleeve and the straight rod; the trapezoid groove is internally provided with telescopic rings, the telescopic rings are composed of telescopic blocks, the number of the telescopic blocks is that each telescopic block is connected through an elastic piece; the width of the telescopic block is smaller than that of the axial groove; any two mutually symmetrical telescopic blocks among the 8 telescopic blocks are larger than the rest, and the depth of the rest six telescopic blocks is the same as that of the trapezoid groove;
the device comprises a chassis, a plurality of support rods, a plurality of limiting blocks and a plurality of supporting rods, wherein the supporting rods are uniformly distributed at four corners of the chassis, each supporting rod is provided with a limiting block, and the heights of the four limiting blocks are identical; the upper end of the supporting rod is provided with a top plate, a telescopic rod is arranged at the central position on the top plate, an output shaft of the telescopic rod is vertically downward, an extrusion plate is arranged between the top plate and the limiting block, the extrusion plate is fixedly connected with the output shaft of the telescopic rod, and the extrusion plate is slidably connected onto the supporting rod; the middle part of the lower end surface of the extrusion plate is provided with an extrusion cylinder, and the aperture of the middle part of the extrusion cylinder is the same as the diameter of the uppermost end of the conical expander; and the upper end of the conical expander can enter the middle part of the extrusion cylinder.
Furthermore, the conical surface design is also adopted below the conical surface of the conical expander, and the inner wall of the upper end of the expansion sleeve is arranged in a conical manner.
Further, barb grooves are formed in the upper end faces of the two larger telescopic blocks on the telescopic ring, the lower end face of the extrusion barrel is fixedly connected with a barb, and the barb is made of an elastic iron sheet.
Further, magnets are arranged inside the two larger telescopic blocks on the telescopic ring, and the magnets are located above the two larger telescopic blocks.
Further, two magnetic strips are arranged on the side face of the conical expander, the positions of the two magnetic strips are the same as those of the two larger telescopic blocks, and the magnetic strips extend to the lower end of the conical expander all the time.
The beneficial effects of the invention are as follows:
1. according to the rubber protective sleeve of the automobile rubber brake hose and the assembly equipment thereof, the inner hole is formed in the rubber protective sleeve body in a penetrating mode, eight axial helical teeth and axial grooves are uniformly distributed on the outer edge of the inner hole, at least 8 axial grooves are formed in a group, the grooves are uniformly distributed on the circumference, and the depth of the grooves is larger than 1mm; by arranging the axial grooves, the design is different from the existing circular inner hole design; the liquid at the two ends of the rubber protective sleeve body is smooth and does not have sedimentation phenomenon; reduce the rubber protective sheath body inflation assembly in-process, the problem of rubber protective sheath body fracture appears.
2. According to the rubber protective sleeve of the automobile rubber brake hose and the assembly equipment thereof, after the conical expander is taken out, a worker manually resets the telescopic ring, and after the telescopic ring is reset, the elastic piece on the telescopic ring drives the telescopic block to shrink into the trapezoid groove; when the rubber protective sleeve body in the prior art is expanded, the rubber protective sleeve body is not extruded by the upper end, the problem that the rubber protective sleeve body is extruded and deformed occurs, and on the other hand, when the rubber protective sleeve body moves downwards through the conical expander, the rubber protective sleeve body cannot rub with the conical expander body, so that the reject ratio of the rubber protective sleeve body during production is reduced.
Drawings
The invention will be further described with reference to the drawings and embodiments.
Fig. 1 is a structural perspective view of a rubber protective sleeve body of the present invention.
Fig. 2 is a side view of a rubber protective sleeve body according to the present invention.
Fig. 3 is a cross-sectional view of a rubber protective sleeve body according to the present invention.
FIG. 4 is a force analysis chart of the present invention.
FIG. 5 is a schematic view of the expanding assembly process of the protective sleeve
FIG. 6 is a schematic view of a rubber brake hose assembly
Fig. 7 is a structural view of the assembling apparatus of the present invention;
FIG. 8 is a side view of the assembly device of FIG. 7;
FIG. 9 is a structural view of the conical expander of the present invention;
FIG. 10 is a structural view of an expansion sleeve of the present invention;
FIG. 11 is a view of the structure of the telescopic ring of the present invention;
FIG. 12 is a structural view of the extrusion barrel of the present invention;
FIG. 13 is a partial cross-sectional view of a tapered dilator of the present invention;
in the figure: the rubber protective sleeve comprises a rubber protective sleeve body 1, an equipment bracket 11, an equipment chassis 12, a groove 13, a pushing pipe 14, a supporting rod 15, a limiting block 16, a top plate 17, a telescopic rod 18, a squeeze plate 19, a squeeze cylinder 191, an inner hole 2, axial helical teeth 3, an axial groove 4, a conical expander 7, a trapezoid groove 71, a telescopic ring 72, a telescopic block 73, a barb groove 74, a barb 75, a magnetic bar 76, an expansion sleeve 8 and a placing groove 81.
Detailed Description
The invention is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
Embodiment 1,
As shown in fig. 1-3;
the rubber protective sleeve of the automobile rubber brake hose comprises a rubber protective sleeve body and further comprises a rubber protective sleeve body;
an inner hole 2 is formed in the rubber protective sleeve body 1 in an axial penetrating manner, eight axial helical teeth 3 and axial grooves 4 are uniformly distributed on the outer edge of the inner hole 2, and the axial helical teeth 3 are in an inclined plane shape; the rubber protective sleeve body 1, the inner hole 2 and the axial groove 4 are integrally vulcanized and made of rubber;
the width of the axial grooves 4 is 1-2 mm, the depth of the axial grooves 4 is 1-3 mm, and at least 8 groups of axial grooves 4 are uniformly distributed on the inner hole 2;
the rubber protective sleeve comprises a rubber protective sleeve body 1, wherein an inner hole 2 is formed in the rubber protective sleeve body in a penetrating mode, eight axial helical teeth 3 and axial grooves 4 are uniformly formed in the outer edge of the inner hole 2, at least 8 axial grooves 4 are formed in a group, the grooves are uniformly distributed on the circumference, and the depth of each groove is larger than 1mm; by arranging 8 groups of axial grooves 4, the design is different from the existing circular inner hole design; the liquid at the two ends of the rubber protective sleeve body 1 is smooth and does not have deposition phenomenon; the problem that the rubber protective sleeve body 1 cracks in the expansion assembly process of the rubber protective sleeve body 1 is reduced.
Embodiment II,
As shown in fig. 4;
the stress process is as follows:
the rubber brake hose is in interference fit with the rubber protective sleeve body;
under the action of external force F, the outer surface of the rubber protective sleeve body at the stress point is assumed to be the A position, and the force for preventing the protective sleeve from moving is friction force Fu and resistance Fdz generated after the hose is deformed;
the moving resistance of the assembled protective sleeve is the sum of the friction force Fu and the resistance Fdz generated by the extrusion deformation of the rubber hose by the axial helical teeth, namely: f=fu+ Fdz; unlike available circular rubber protecting sleeve, the surface of the assembled rubber hose is not easy to deform to result in friction force Fu;
compared with the traditional protection sleeve, the stress analysis is that friction force Fu, supporting force N and external force F are adopted, resistance caused by deformation and Fdz are adopted, and when the protection sleeve bears the external force, the condition that the protection sleeve does not move is adopted: outside Fu+ Fdz > F, the minimum force of movement of the protective sheath after assembly is defined as > 30N in the normal case, namely: fu+ Fdz > =30n.
The stress process of the invention is as follows;
the brake hose is in interference fit with the rubber protective sleeve body; the rubber protective sleeve body is subjected to the action of external force F, and the stress point is the surface A of the rubber protective sleeve body; support reaction N, resistance Fdz to material deformation, friction Fu under F, before the protective cover moves: f=fu+ Fdz; while moving: f > fu+ Fdz. Compared with the traditional design protective sleeve, the interior of the protective sleeve is not provided with grooves, or the number of the grooves is too shallow or insufficient, enough deformation cannot be formed on the surface of the hose, so that deformation resistance Fdz cannot be generated, all movement resistance comes from friction force Fu, larger supporting force N is needed, larger material deformation force is needed to form supporting counterforce N, and the protective sleeve has higher requirements on material characteristics and is extremely easy to crack after assembly;
through design and test, the resistance caused by deformation of the material obtained in the invention is about 20 percent of friction resistance; i.e. Fdz =20%fu, which deformation resistance contributes to the improvement of the movement force of the protective sheath, but during assembly, since the assembly fixture is a non-deformable metal expander, this is stressed during the expansion assembly movement: friction force Fu, support reaction force N, and assembly thrust force F; fu=N;
in a third embodiment of the present invention,
the present embodiment specifically describes equipment used for assembling the rubber protective sleeve body in the first to second embodiments; including
An automobile rubber brake hose assembly device, which is suitable for the rubber protective sleeve of the automobile rubber brake hose, comprises an equipment bracket 11 and an equipment chassis 12; the equipment chassis 12 is arranged on the equipment bracket;
a groove 13 is formed in the center of the upper end of the equipment chassis 12, and a hydraulic system is arranged in the groove 13; the upper end of the equipment chassis 12 is fixedly provided with a pushing pipe 14 through a bolt, the inside of the pushing pipe 14 is connected with an expansion sleeve 8 in a sliding manner, the expansion sleeve 8 is connected with a hydraulic system, the hydraulic system realizes that the expansion sleeve 8 stretches and contracts in the pushing pipe 14, the expansion sleeve 8 is uniformly provided with placing grooves 81, and the number of the placing grooves 81 is the same as that of the inner holes 2;
the expansion sleeve is characterized by further comprising a conical expander 7, wherein the conical expander 7 is movably arranged above the expansion sleeve 8, a trapezoid groove 71 is formed in the middle of the conical expander 7, and the trapezoid groove 71 is positioned at the transition part of the conical edge of the conical expander 7 and the straight rod; the trapezoid groove 71 is internally provided with a telescopic ring 72, the telescopic ring 72 is composed of telescopic blocks 73, the number of the telescopic blocks 73 is 8, and each telescopic block 73 is connected through an elastic piece 731; and the width of the telescopic block 73 is smaller than the width of the axial groove 4; any two mutually symmetrical telescopic blocks 73 among the 8 telescopic blocks 73 are larger than the rest 6 telescopic blocks, and the depth of the rest six telescopic blocks 73 is the same as the depth of the trapezoid groove 71;
the device further comprises supporting rods 15, wherein the supporting rods 15 are uniformly distributed at four corners of the device chassis 12, each supporting rod 15 is provided with a limiting block 16, and the heights of the four limiting blocks 16 are the same; the upper end of the supporting rod 15 is provided with a top plate 17, a telescopic rod 18 is arranged in the center position on the top plate 17, an output shaft of the telescopic rod 18 is vertically downward, an extrusion plate 19 is arranged between the top plate 17 and the limiting block 16, the extrusion plate 19 is fixedly connected with the output shaft of the telescopic rod 18, and the extrusion plate 19 is slidably connected to the supporting rod 15; the middle part of the lower end surface of the extrusion plate 19 is provided with an extrusion cylinder 191, and the aperture of the middle part of the extrusion cylinder 191 is the same as the diameter of the uppermost end of the conical expander 7; the upper end of the conical expander 7 can enter the middle part of the extrusion cylinder 191;
when the device is used, the uninstalled rubber protective sleeve body is placed on the conical expander 7, and the middle part of the conical expander 7 is provided with the trapezoid groove 71, and the trapezoid groove 71 is positioned at the transition part of the conical edge of the conical expander 7 and the straight rod; and by providing the expansion ring 72 in the trapezoid groove 71, and the expansion ring 72 is composed of 8 expansion blocks 73, and each expansion block 73 is connected by an elastic piece 731; any two mutually symmetrical telescopic blocks 73 among the 8 telescopic blocks 73 are larger than the rest 6 telescopic blocks, and the depth of the rest six telescopic blocks 73 is the same as the depth of the trapezoid groove 71; therefore, when the rubber protecting sleeve body is placed, two telescopic blocks 73 extend out of the trapezoid groove 71, at this time, when a worker places the rubber protecting sleeve body, the axial groove 4 on the inner wall of the rubber protecting sleeve body needs to be placed on the two telescopic blocks 73, so that the two larger telescopic blocks 73 are embedded into the axial groove 4, when the placement is completed, the worker starts the telescopic rod 18 above the top plate 17, the telescopic rod 18 pushes the extrusion plate 19 to slide downwards on the supporting rod 15, when the extrusion plate 19 slides downwards, the extrusion plate 19 drives the extrusion cylinder 191 to move downwards, and because the aperture in the middle of the extrusion cylinder 191 is the same as the size of the upper end of the conical expander 7, the upper end of the conical expander 7 enters the inside of the extrusion cylinder 191, at this time, the extrusion cylinder 191 continuously moves downwards along with the extrusion of the extrusion plate 19 by the telescopic rod 18, at this time, the extrusion cylinder 191 will first contact with the upper ends of the two larger telescopic blocks 73, the lower end face of the extrusion cylinder 191 will extrude the upper ends of the larger telescopic blocks 73, the telescopic blocks 73 will drive the telescopic rings 72 to slide downwards on the conical expander 7, when the telescopic rings 72 slide to the conical surface on the conical expander 7, the telescopic rings 72 will be extruded by the conical surface, the distance between the telescopic blocks 73 on the telescopic rings 72 will become larger, when the distance between the telescopic blocks 73 becomes larger, each telescopic block 73 will enter into the axial groove 4 on the inner wall of the rubber protecting sleeve body, at this time, the rubber protecting sleeve body will be pushed by the telescopic blocks 73 to expand until the rubber protecting sleeve body is fully expanded, at this time, the rubber protecting sleeve body will be sleeved on the expansion sleeve 8 with the telescopic rods 18 continuously pressing down, at this time the telescopic blocks 73 on the telescopic rings 72 will enter into the inside of the placing groove 81, then the rubber protective sleeve body is recovered under the telescopic ring 72 under the influence of shrinkage, the telescopic block 73 enters the placing groove 81 to shrink, at the moment, a worker lifts the telescopic rod 18, the conical expander 7 extends out of the extrusion cylinder 191, at the moment, the worker manually takes out the conical expander 7 from the expansion sleeve 8, at the moment, the lower end of the telescopic ring 72 is not used for supporting the rubber protective sleeve body, so that the telescopic ring 72 is separated from the rubber protective sleeve body along with the conical expander 7; when the conical expander 7 is taken out, a worker manually resets the telescopic ring 72, and after the telescopic ring 72 is reset, the elastic piece 731 on the telescopic ring 72 drives the telescopic block 73 to shrink into the trapezoid groove 71; compared with the prior art, when the rubber protective sleeve body is expanded, the rubber protective sleeve body is not extruded by the upper end, so that the problem that the rubber protective sleeve body is extruded and deformed is solved, and on the other hand, when the rubber protective sleeve body moves downwards through the conical expander 7, the rubber protective sleeve body is not rubbed with the conical expander 7 body, so that the reject ratio of the rubber protective sleeve body in production is reduced; when the rubber protective sleeve body is contracted on the expansion sleeve 8, a worker places the automobile brake hose inside the expansion sleeve 8, then the automobile brake hose is operated through a hydraulic system on the control equipment chassis 12, the hydraulic system can be a hydraulic cylinder, the hydraulic system drives the expansion sleeve 8 to move downwards inside the pushing pipe 14, the pushing pipe 14 and the expansion sleeve 8 move relatively until the pushing pipe 14 pushes the rubber protective sleeve body on the expansion sleeve 8, the rubber protective sleeve body is contracted on the automobile brake hose, and a working procedure is finished.
The lower part of the conical surface of the conical expander 7 is also designed into a conical surface, and the inner wall of the upper end of the expansion sleeve 8 is arranged into a conical shape, so that when the conical expander 7 is placed on the expansion sleeve 8, the conical expander 7 and the expansion sleeve 8 are tightly attached to each other;
by the conical design of the lower part of the conical surface of the conical expander 7 and the conical arrangement of the inner wall of the upper end of the expansion sleeve 8, when the conical expander 7 is placed on the expansion sleeve 8, the conical expander 7 and the expansion sleeve 8 are tightly attached to each other; at this time, when the conical expander 7 is taken out from the expansion sleeve 8, the telescopic ring 72 is guided by the inclined surface, and the telescopic ring 72 is reset when the manual resetting of the telescopic ring 72 is performed by the staff.
Barb grooves 74 are formed in the upper end faces of the two larger telescopic blocks 73 on the telescopic ring 72, a barb 75 is fixedly connected to the lower end face of the extrusion cylinder 191, and the barb 75 is made of an elastic iron sheet;
magnets are arranged inside the two larger telescopic blocks 73 on the telescopic ring 72, and the magnets are positioned above the two larger telescopic blocks 73;
two magnetic strips 76 are arranged on the side face of the conical expander 7, the positions of the two magnetic strips 76 are the same as those of the larger two telescopic blocks 73, and the magnetic strips 76 extend to the lower end of the conical expander 7 all the way;
through being provided with barb groove 74 in the inside of two bigger telescopic blocks 73 on the expansion ring 72 to the barb 75 has been linked firmly at the lower terminal surface of extrusion tube 191, when telescopic rod 18 moves down, telescopic rod 18 can promote extrusion tube 191 and move down, when extrusion tube 191 moves down, extrusion tube 191 can drive barb 75 and move down, then barb 75 can enter into barb groove 74 inside, then extrusion tube 191 continuously moves down, extrusion tube 191 extrudes the expansion ring 72, after the expansion ring 72 is placed on expansion sleeve 8 with the rubber protective sleeve body, telescopic rod 18 upwards moves, at this moment barb 75 card is in barb groove 74 inside, telescopic rod 18 can drive expansion ring 72 upwards on conical expander 7, at this moment telescopic rod 18 continuously upwards moves, because conical expander 7's self gravity is greater than barb 75's elasticity, so barb 75 can break away from barb 74, and then realize automatic realization expansion ring 72 resets; and through being provided with the magnet on the upper end of two great expansion blocks 73, after the expansion ring 72 completely enters the trapezoid groove 71, the expansion block 73 can magnetically attract the conical expander 7, so that stability between the expansion ring 72 and the conical expander 7 is improved, and the situation that when a worker takes the conical expander 7, the expansion ring 72 rotates on the conical expander 7, so that the position of the expansion ring 72 needs to be readjusted when a rubber protective sleeve body is subsequently installed is avoided; by arranging two magnetic strips 76 on the side face of the conical expander 7, the positions of the magnetic strips 76 are the same as those of the larger telescopic blocks 73, and the magnetic strips 76 extend to the lower end of the conical expander 7, when the telescopic ring 72 is extruded by the extrusion cylinder 191 to move downwards on the conical expander 7, the magnets on the larger telescopic blocks 73 can attract the magnetic strips 76 on the two sides, so that the stability of the telescopic ring 72 in conveying a rubber protective sleeve is improved.
Fig. 5 is a schematic diagram of the expansion assembly process of the rubber protective sleeve body 1, the protective sleeve body 1 soaked with the assembly liquid is placed at the leading end of the conical expander 7, the soaked assembly liquid gradually releases the surface of the conical expander 7 in the expansion assembly process of the rubber protective sleeve body 1, the contact friction coefficient uk between the rubber protective sleeve body 1 and the conical expander 7 is reduced, the protective sleeve body 1 is pushed onto the expansion sleeve 8 by using the pushing force F of the minimum telescopic rod 18 under the condition that the rubber protective sleeve body 1 is not unstable under pressure, the conical expander 7 is taken away, a rubber hose is placed into the expansion sleeve 8, the expansion sleeve 8 is pulled out, and the rubber protective sleeve 1 can be smoothly assembled on the hose assembly shown in fig. 6 in the above manner.
Fig. 6 is a schematic view of a rubber brake hose assembly on a real vehicle, in which the protective sheath body 1 is assembled.
The foregoing has shown and described the basic principles, principal features and advantages of the invention; it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a rubber protective sheath of car rubber brake hose, includes rubber protective sheath body, its characterized in that: also comprises;
an inner hole (2) is formed in the rubber protective sleeve body (1) in an axial penetrating mode, eight axial helical teeth (3) and axial grooves (4) are uniformly formed in the outer edge of the inner hole (2), and the axial helical teeth (3) are in an inclined plane shape; the rubber protective sleeve body (1), the inner hole (2) and the axial groove (4) are integrally vulcanized by rubber.
2. The rubber boot for an automotive rubber brake hose according to claim 1, wherein: the width of the axial grooves (4) is 1-2 mm, the depth of the axial grooves (4) is 1-3 mm, and at least 8 groups of axial grooves (4) are uniformly distributed on the inner hole (2).
3. The rubber boot for an automotive rubber brake hose according to claim 1, wherein: the stress process is as follows:
the rubber brake hose is in interference fit with the rubber protective sleeve body;
under the action of external force F, the outer surface of the rubber protective sleeve body (1) at the stress point is assumed to be the position A, and the force for preventing the movement force of the rubber protective sleeve body (1) is friction force Fu and resistance Fdz generated after the hose is deformed;
the moving resistance of the assembled rubber protective sleeve body (1) is the sum of the friction force Fu and the resistance Fdz generated by the extrusion deformation of the rubber hose by the axial helical teeth.
4. An automotive rubber brake hose fitting apparatus adapted for use in a rubber boot of an automotive rubber brake hose as claimed in any of the preceding claims 1-3, comprising an apparatus bracket (11), an apparatus chassis (12); the equipment chassis (12) is arranged on the equipment bracket (11) and is characterized in that;
a groove (13) is formed in the center of the upper end of the equipment chassis (12), and a hydraulic system is arranged in the groove (13); the upper end of the equipment chassis (12) is fixedly provided with a pushing pipe (14) through a bolt, the inside of the pushing pipe (14) is connected with an expansion sleeve (8) in a sliding manner, the expansion sleeve (8) is connected with a hydraulic system, the hydraulic system realizes that the expansion sleeve (8) stretches and contracts in the pushing pipe (14), the expansion sleeve (8) is uniformly provided with placing grooves (81), and the number of the placing grooves (81) is the same as that of the inner holes (2);
the device also comprises a conical expander (7), wherein the conical expander (7) is movably arranged above the expansion sleeve (8), a trapezoid groove (71) is formed in the middle of the conical expander (7), and the trapezoid groove (71) is positioned at the transition part of the conical edge of the conical expander (7) and the straight rod; the trapezoid groove (71) is internally provided with a telescopic ring (72), the telescopic ring (72) is composed of telescopic blocks (73), the number of the telescopic blocks (73) is 8, and each telescopic block (73) is connected through an elastic piece (731); the width of the telescopic block (73) is smaller than the width of the axial groove (4); any two telescopic blocks (73) which are symmetrical with each other among the 8 telescopic blocks (73) are larger than the rest 6 telescopic blocks, and the depth of the rest six telescopic blocks (73) is the same as the depth of the trapezoid groove (71);
the device further comprises supporting rods (15), the supporting rods (15) are uniformly distributed at four corners of the equipment chassis (12), each supporting rod (15) is provided with a limiting block (16), and the heights of the four limiting blocks (16) are the same; the upper end of the supporting rod (15) is provided with a top plate (17), a telescopic rod (18) is arranged at the central position on the top plate (17), an output shaft of the telescopic rod (18) is vertically downward, an extrusion plate (19) is arranged between the top plate (17) and the limiting block (16), the extrusion plate (19) is fixedly connected with the output shaft of the telescopic rod (18), and the extrusion plate (19) is slidably connected on the supporting rod (15); the middle part of the lower end surface of the extrusion plate (19) is provided with an extrusion cylinder (191), and the aperture of the middle part of the extrusion cylinder (191) is the same as the diameter of the uppermost end of the conical expander (7); and the upper end of the conical expander (7) can enter the middle part of the extrusion cylinder (191).
5. The rubber boot for an automotive rubber brake hose according to claim 4, wherein: the conical surface design is also adopted below the conical surface of the conical expander (7), and the inner wall of the upper end of the expansion sleeve (8) is arranged in a conical manner, so that when the conical expander (7) is placed on the expansion sleeve (8), the conical expander (7) and the expansion sleeve (8) are tightly attached to each other.
6. The rubber boot for an automotive rubber brake hose according to claim 4, wherein: barb grooves (74) are formed in the upper end faces of two larger telescopic blocks (73) on the telescopic ring (72), a barb (75) is fixedly connected to the lower end face of the extrusion cylinder (191), and the barb (75) is made of an elastic iron sheet.
7. The automobile rubber brake hose assembly device according to claim 6, wherein: magnets are arranged inside the two larger telescopic blocks (73) on the telescopic ring (72), and the magnets are located above the two larger telescopic blocks (73).
8. The automobile rubber brake hose assembly device according to claim 6, wherein: two magnetic force strips (76) are arranged on the side face of the conical expander (7), the positions of the two magnetic force strips (76) are the same as those of the two larger telescopic blocks (73), and the magnetic force strips (76) extend to the lower end of the conical expander (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310176596.XA CN116576338B (en) | 2023-02-28 | 2023-02-28 | Automobile rubber brake hose assembly equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310176596.XA CN116576338B (en) | 2023-02-28 | 2023-02-28 | Automobile rubber brake hose assembly equipment |
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| CN116576338A true CN116576338A (en) | 2023-08-11 |
| CN116576338B CN116576338B (en) | 2023-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310176596.XA Active CN116576338B (en) | 2023-02-28 | 2023-02-28 | Automobile rubber brake hose assembly equipment |
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| CN212733850U (en) * | 2020-04-23 | 2021-03-19 | 江苏勤丰管业有限公司 | Expander for end cap of steel-plastic composite pipe |
| CN112571809A (en) * | 2020-11-03 | 2021-03-30 | 新昌浙江工业大学科学技术研究院 | Automobile wire harness sheath sealing ring assembling device and method |
| CN113458754A (en) * | 2021-07-12 | 2021-10-01 | 荆州恒隆汽车零部件制造有限公司 | Method for assembling steering gear shell bushing by using press-fitting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1421828A (en) * | 1972-04-27 | 1976-01-21 | Gen Tire & Rubber Co | Assembly of bushings |
| GB8326371D0 (en) * | 1983-10-01 | 1983-11-02 | Standard Telephones Cables Ltd | Applying thermoplastics sleeve to crush resistant tubing |
| IT8519352A0 (en) * | 1984-02-24 | 1985-02-01 | Pirelli General Plc | APPLICATION OF AN ELASTIC SLEEVE ON AN EXTENDED BODY |
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| Publication number | Publication date |
|---|---|
| CN116576338B (en) | 2023-10-24 |
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