A lightweight operating lever, a production method and a production apparatus for a lightweight operating lever

Abstract

The application discloses a lightened operating rod, a production method and a production device of the lightened operating rod, and belongs to the technical field of insulating tools.The method comprises the following specific steps: step S1, soaking a pretreated fiber bundle in an infiltration solution, wherein the fiber bundle comprises glass fibers and aramid fibers, and the fiber bundle is arranged into a yarn sheet; step S2, winding the yarn sheet after being soaked in the infiltration solution on a core mold by using a production device to obtain a first operating rod prototype; step S3, directly performing solidification on the first operating rod prototype on the core mold and then demolding, and performing end face processing on the demolded first operating rod prototype to obtain a second operating rod prototype; and step S4, performing paint spraying treatment on the second operating rod prototype to obtain the lightened operating rod. By adopting the combination winding of the glass fibers and the aramid fibers (1-2):1, the density of the aramid fibers is not higher than that of the glass fibers, and meanwhile, the aramid fibers have relatively high strength and insulation performance, so that the weight of the operating rod can be effectively reduced under the premise of guaranteeing the performance of the operating rod, and the operation efficiency and safety are improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of insulating tools, and particularly relates to a lightweight operating rod, a production method and a production device of the lightweight operating rod. BACKGROUND

[0002] In the maintenance and repair work of a power system, a live working rod is an indispensable tool. The traditional live working rod often has the problem of large weight, and long-time use can cause fatigue of an operator, thereby affecting work efficiency and safety; meanwhile, the heavy operating rod can also cause unnecessary impact on a live device due to inertia and other factors during operation.

[0003] Most operating rods on the market use glass fibers as fiber bundles, and the density of glass fibers is about 2.5 g / cm 3 The density of aramid fibers is 1.4-1.5 g / cm 3 , and aramid fibers have the advantages of high strength, strong insulation and high temperature resistance, and can realize the goal of preparing a lightweight and high-strength operating rod, but the price of aramid fibers is 5-10 times that of glass fibers. SUMMARY

[0004] The application aims to provide a lightweight operating rod, a production method and a production device of the lightweight operating rod, and solve the problem of large weight of the rod body of the operating rod in the background art.

[0005] In order to achieve the above-mentioned purpose, the application adopts the following technical scheme:

[0006] A production method of a lightweight operating rod, characterized in that the method comprises the following specific steps:

[0007] Step S1, soaking a pretreated fiber bundle in an infiltration solution, the fiber bundle comprising glass fibers and aramid fibers, and arranging the fiber bundle to form a yarn sheet;

[0008] Step S2, winding the yarn sheet soaked in the infiltration solution on a core mold by using a production device to obtain a first operating rod prototype;

[0009] Step S3, directly curing the first operating rod prototype on the core mold and then demolding, and performing end face processing on the demolded first operating rod prototype to obtain a second operating rod prototype;

[0010] Step S4, performing paint spraying treatment on the second operating rod prototype to obtain a lightweight operating rod;

[0011] In step S2, 8-10 fibers are arranged side by side to form a yarn sheet during winding, the glass fibers and aramid fibers are combined in a ratio of 1-2:1 in the yarn sheet, and the yarn sheet is wound on the mandrel in a laying manner, the winding angle refers to the angle between the fiber direction on the mandrel and the mandrel axis, and the angle between the yarn sheet and the mandrel axis, which are 80-85° in the circumferential direction and 15-30° in the longitudinal direction, respectively, and the two angles are arranged at intervals, one layer of circumferential direction is laid during winding, and then one layer of longitudinal direction is laid, and the number of layers is 12-16 layers;

[0012] During winding, the winding speed of the production equipment is 80-150 rpm / min; the tension of a single fiber is 1.1-4.4 N; the tension of a single fiber is reduced by 0.5-1 N every 3-4 layers of laying.

[0013] Preferably, in step S3, the first operating rod prototype is cured, including:

[0014] The first operating rod prototype is cured at 70-80℃ for 3-5h, then cured at 110-120℃ for 1.5-2.5h, and finally cured at 120-135℃ for 1.5-2.5h; wherein the mandrel rotates throughout the curing process.

[0015] Preferably, in step S4, the surface of the second operating rod prototype after painting is polished and polished.

[0016] Preferably, in step S4, painting is divided into three times, and primer, intermediate paint and topcoat are sprayed respectively, the primer is water-based epoxy paint, the intermediate paint is water-based epoxy paint, and the topcoat is water-based acrylic polyurethane paint.

[0017] Preferably, the resin is epoxy resin or phenolic resin, and the glass transition temperature of the resin is 110℃-200℃.

[0018] Another aspect of the present application also provides a lightweight operating rod obtained by the above-mentioned production method, which comprises a fiber bundle and an infiltration liquid, and the fiber bundle accounts for 60-80% of the mass of the rod body.

[0019] The beneficial effects of the present application are as follows:

[0020] The heating device and water cooling system arranged inside the mandrel directly perform curing and demolding on the mandrel, which simplifies the production process and improves the production efficiency;

[0021] The fibers are arranged side by side to form a yarn sheet before winding, which simplifies the winding step and can pre-select the fiber ratio to adapt to different manufacturing requirements;

[0022] By adopting the combination winding of glass fiber and aramid fiber (1-2): 1, the density of aramid fiber is not higher than that of glass fiber, and meanwhile, the aramid fiber has high strength and insulation performance, so that the weight of the operating rod can be effectively reduced, and the operation efficiency and safety can be improved on the premise of ensuring the performance of the operating rod. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings constituting a part of this specification illustrate preferred embodiments of the present application and, together with the description, serve to explain the principles of the present application. In the drawings:

[0024] Figure 1 A flow chart of a production method of a light-weight operating rod according to Embodiment 1 of the present application;

[0025] Figure 2 A structure schematic diagram of a production equipment of a light-weight operating rod according to Embodiment 7 of the present application;

[0026] Figure 3 A structure schematic diagram of a core mold according to Embodiment 7 of the present application.

[0027] 1, core mold; 2, guide nozzle; 3, impregnation tank; 4, tension control device; 5, fiber bundle. DETAILED DESCRIPTION

[0028] The present application will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0029] The following detailed description is exemplary and is intended to provide further explanation of the present application. Unless otherwise specified, all technical terms used in the present application have the same meanings as those generally understood by those skilled in the art to which the present application belongs. The terms used in the present application are only for the purpose of describing the specific embodiments and are not intended to limit the exemplary embodiments according to the present application.

[0030] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0031] In addition, the terms "first", "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified. In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] Embodiment 1

[0033] A production method of a lightweight operating rod, comprising:

[0034] Step S1, soaking the pretreated fiber bundle in the soaking and infiltrating solution, the fiber bundle comprising glass fibers and aramid fibers, and arranging the fiber bundle into a yarn sheet;

[0035] Step S2, winding the yarn sheet soaked in the soaking and infiltrating solution on the core mold 1 by using a production device to obtain a first operating rod prototype, 8 fibers are arranged side by side to form a yarn sheet during winding, the glass fibers and aramid fibers in the yarn sheet are combined in a proportion of 1:1 by number, and the yarn sheet core mold 1 is wound on the core mold 1 in a laying manner, the winding angle is the angle between the fiber direction on the core mold and the core mold axis, and the angle between the yarn sheet and the core mold axis is 80° in the circumferential direction and 15° in the longitudinal direction, respectively, the number of laying layers is 12, and the two angles are arranged at intervals, one layer is laid in the circumferential direction during winding, and then one layer is laid in the longitudinal direction, the winding speed of the production device is 80 rpm / min during winding; the tension of a single fiber is 1.1 N; the tension of a single fiber is reduced by 0.5 N for each laying layer of the winding layer;

[0036] Step S3, directly curing the first operating rod prototype on the core mold 1 and then demolding, processing the end face of the demolded first operating rod prototype to obtain a second operating rod prototype; curing the first operating rod prototype, comprising:

[0037] curing the first operating rod prototype at 70℃ for 3h, then at 110℃ for 1.5h, and finally at 120℃ for 1.5h; wherein the core mold 1 rotates throughout the curing process;

[0038] Step S4, the second operation lever prototype is subjected to paint spraying treatment to obtain a light-weight operation lever; the total thickness of the paint spraying is 60-100 μm, the thickness of the primer is 30-50 μm, the oven temperature is set to 80-90 ℃, and the formed product is taken out after being placed for 6-12 hours.

[0039] Example 2

[0040] A production method of a light-weight operation lever, comprising:

[0041] Step S1, the pretreated fiber bundle is soaked in an infiltration liquid, the fiber bundle comprises glass fibers and aramid fibers, and the fiber bundle is arranged into a yarn sheet;

[0042] Step S2, the yarn sheet soaked in the infiltration liquid is wound on a core mold 1 by using a production device to obtain a first operation lever prototype; 10 fibers are arranged side by side to form the yarn sheet during winding, the glass fibers and the aramid fibers are combined in a proportion of 1.5:1 in number in the yarn sheet, the yarn sheet core mold 1 is wound on the core mold 1 in a laying manner, the winding angle is the included angle between the fiber direction on the core mold and the core mold axis, and the included angle between the yarn sheet and the core mold axis is 85° in the circumferential direction and 30° in the longitudinal direction, respectively; the two angles are arranged at intervals, one layer of circumferential direction is laid during winding, and then one layer of longitudinal direction is laid, the number of layers is 16, the winding speed of the production device is 150 rpm / min during winding, the tension of a single fiber is 4.4 N, and the tension of a single fiber is reduced by 1 N every 4 layers of the laid layer during winding;

[0043] Step S3, the first operation lever prototype is directly cured on the core mold 1 and then demolded, the demolded first operation lever prototype is subjected to end face processing to obtain a second operation lever prototype; the first operation lever prototype is cured, comprising:

[0044] the first operation lever prototype is cured at 80 ℃ for 5 h, then cured at 120 ℃ for 2.5 h, and finally cured at 135 ℃ for 2.5 h; during the curing, the core mold 1 rotates all the time;

[0045] Step S4, the second operation lever prototype is subjected to paint spraying treatment to obtain a light-weight operation lever.

[0046] Example 3

[0047] A production method of a light-weight operation lever, comprising:

[0048] Step S1, the pretreated fiber bundle is soaked in an infiltration liquid, the fiber bundle comprises glass fibers and aramid fibers, and the fiber bundle is arranged into a yarn sheet;

[0049] Step S2, the yarn sheet soaked in the soaking solution is wound on the mandrel 1 by using a production device to obtain a first operating rod prototype. When winding, 9 fibers are arranged side by side to form a yarn sheet. The glass fibers and aramid fibers in the yarn sheet are combined at a ratio of 2:1 in terms of the number of roots. The yarn sheet mandrel 1 is wound on the mandrel 1 in a laying manner. The winding angle refers to the angle between the fiber direction on the mandrel and the mandrel axis, and the angle between the yarn sheet and the longitudinal direction of the mandrel axis, which are 83° in the circumferential direction and 20° in the longitudinal direction respectively. The two angles are arranged at intervals. When winding, one layer of circumferential direction is laid, and then one layer of longitudinal direction is laid. The number of laid layers is 15. When winding, the winding speed of the production device is 100 rpm / min. The tension of a single fiber is 3N. The tension of a single fiber is reduced by 0.8N every 3 layers of laid layers.

[0050] Step S3, the first operating rod prototype is directly cured on the mandrel 1 and then demolded. The demolded first operating rod prototype is end face processed to obtain a second operating rod prototype. The first operating rod prototype is cured, including:

[0051] The first operating rod prototype is cured at 75℃ for 4h, then cured at 115℃ for 2h, and finally cured at 130℃ for 2h. During the curing process, the mandrel 1 rotates all the time.

[0052] Step S4, the second operating rod prototype is subjected to paint spraying treatment to obtain a lightweight operating rod.

[0053] Example 4

[0054] A production method of a lightweight operating rod, including:

[0055] Step S1, the fiber bundle after pretreatment is soaked in a soaking solution. The fiber bundle includes glass fibers and aramid fibers. The fiber bundle is arranged to form a yarn sheet.

[0056] Step S2, the yarn sheet soaked in the soaking solution is wound on the mandrel 1 by using a production device to obtain a first operating rod prototype. When winding, 9 fibers are arranged side by side to form a yarn sheet. The glass fibers and aramid fibers in the yarn sheet are combined at a ratio of 2:1 in terms of the number of roots. The yarn sheet mandrel 1 is wound on the mandrel 1 in a laying manner. The winding angle refers to the angle between the fiber direction on the mandrel and the mandrel axis, and the angle between the yarn sheet and the longitudinal direction of the mandrel axis, which are 83° in the circumferential direction and 20° in the longitudinal direction respectively. The two angles are arranged at intervals. When winding, one layer of circumferential direction is laid, and then one layer of longitudinal direction is laid. The number of laid layers is 15. When winding, the winding speed of the production device is 100 rpm / min. The tension of a single fiber is 3N. The tension of a single fiber is reduced by 0.8N every 3 layers of laid layers.

[0057] Step S3, the first operating rod prototype is directly cured on the mandrel 1 and then demolded. The demolded first operating rod prototype is end face processed to obtain a second operating rod prototype. The first operating rod prototype is cured, including:

[0058] The first operating rod prototype is cured at 72℃ for 3.5h, then at 118℃ for 1.7h, and finally at 133℃ for 2.2h; wherein the mandrel 1 rotates throughout the curing process;

[0059] Step S4, the second operating rod prototype is subjected to paint spraying treatment to obtain the lightweight operating rod.

[0060] Example 5

[0061] A production method of a lightweight operating rod, comprising:

[0062] Step S1, the pretreated fiber bundle is soaked in a soaking solution, the fiber bundle comprises glass fiber and aramid fiber, and the fiber bundle is arranged into a yarn sheet;

[0063] Step S2, the yarn sheet soaked in the soaking solution is wound on the mandrel 1 by using a production device to obtain a first operating rod prototype; during the winding, 8 fibers are arranged side by side to form a yarn sheet, the glass fiber and the aramid fiber in the yarn sheet are combined in a proportion of 5:3 in terms of the number of fibers, the yarn sheet mandrel 1 is wound on the mandrel 1 in a laying manner, the winding angle is the angle between the fiber direction on the mandrel and the mandrel axis, and the angle between the yarn sheet and the longitudinal direction of the mandrel axis, which are respectively 85° in the circumferential direction and 15° in the longitudinal direction, the two angles are arranged at intervals, one layer of circumferential direction is laid during the winding, and then one layer of longitudinal direction is laid, the number of layers is 15, during the winding, the winding speed of the production device is 100 rpm / min; the tension of a single fiber is 2N; the tension of a single fiber is reduced by 0.7N every 3 layers of laying during the winding;

[0064] Step S3, the first operating rod prototype is directly cured on the mandrel 1 and then demolded, the demolded first operating rod prototype is subjected to end face processing to obtain a second operating rod prototype; the first operating rod prototype is cured, comprising:

[0065] The first operating rod prototype is cured at 72℃ for 3.5h, then at 118℃ for 1.7h, and finally at 133℃ for 2.2h; wherein the mandrel 1 rotates throughout the curing process;

[0066] Step S4, the second operating rod prototype is subjected to paint spraying treatment to obtain the lightweight operating rod.

[0067] As a preferred example of the above embodiment, in the step S1, the fiber pretreatment is: the fiber is cleaned by using an ultrasonic cleaning machine to remove impurities and oil stains on the surface, and then dried at 70-80℃ for 12-24h to remove residual water and ensure the infiltration degree of the fiber and the resin; the glass fiber and the aramid fiber with high strength and high modulus are selected, which have low density and high strength and can withstand the tensile force and bending force in the live-line work process to ensure the stability of the operating rod in use.

[0068] As a preferred example of the above embodiment, in step S2, the preparation process of the infiltrating liquid is as follows: the resin (such as E44 or E51 type resin), curing agent (such as methyl tetrahydrophthalic anhydride), accelerator (such as dimethyl benzylamine) and defoaming agent (such as polyoxyethylene defoaming agent) are mixed and stirred in a mixing device at 45-60°C and 120-300 rpm / min for 1-2h, and then vacuum degassing for 1.5-3h; the raw materials are weighed and prepared into resin glue liquid, which is stirred uniformly and then reserved; as a high-performance adhesive, the epoxy resin can effectively combine with glass fiber or aramid fiber, and after curing, it can provide high strength and hardness, and has excellent insulation performance and chemical corrosion resistance; the accelerator can adjust the curing temperature and time, prevent stress concentration of the material, and ensure the strength. The multifunctional defoaming agent has strong defoaming property, prevents the retention of small bubbles in the system, and improves the uniformity and insulation stability of the product.

[0069] As a preferred example of the above embodiment, in step S2, the core mold 1 is pretreated before winding. The specific steps are as follows: after polishing the surface of the core mold 1, the whole is coated with a release agent, and placed in an oven for treatment at 180-230°C for 12-24h.

[0070] As a preferred example of the above embodiment, in step S3, the end face adding tool body includes: after the first operation rod sketch is cured, a diamond cutter is used to process the end face according to the preset size, so as to ensure that the end face of the first operation rod sketch is flat and free of burrs.

[0071] As a preferred example of the above embodiment, in step S4, cold water is quickly filled in the cavity of the core mold 1, the surface of the core mold 1 shrinks, and the second operation rod sketch is quickly demolded.

[0072] As a preferred example of the above embodiment, in step S4, the paint spraying is divided into three times, and the primer, intermediate paint and topcoat are sprayed respectively. The primer is 80μm water-based epoxy paint, the intermediate paint is 80μm water-based epoxy paint, and the topcoat is 60μm water-based acrylic polyurethane paint. The oven temperature is set to 80-90°C, and the product is taken out after being placed for 6-12h.

[0073] As a preferred example of the above embodiment, in step S4, the second operation rod sketch after paint spraying is polished on the outer surface.

[0074] The outer surface polishing specifically includes: polishing and polishing the surface of the second operation rod sketch after paint spraying to achieve a smoothness of 0.8-1.6; the product performance can completely meet GB 13398, and the weight of the rod body is 10-30% lighter than that on the market.

[0075] As a preferred example of the above embodiment, the resin is an epoxy resin or a phenolic resin, and the glass transition temperature of the resin is 110-200°C.

[0076] As a preferred example of the above embodiment, the production equipment is a winding machine.

[0077] Embodiment 6

[0078] A lightweight operating rod is composed of a resin, a curing agent, an accelerator, an antifoaming agent and a fiber bundle, the resin being an epoxy resin or a phenolic resin, and the fiber bundle being glass fiber and aramid fiber; the fiber bundle accounts for 60-80% of the mass of the composite material.

[0079] The fiber bundle is composed of glass fiber and aramid fiber arranged in combination.

[0080] The resin is an epoxy resin or a phenolic resin, and the glass transition temperature is 110-200°C; the mass ratio of the resin, the curing agent, the accelerator and the antifoaming agent is 100:85:(0.4-2):0.3, the single-fiber diameter of the fiber bundle is 10-15μm, the linear density is 600-1200tex, and the elastic modulus is greater than 100GPa.

[0081] After performance benchmarking test with the same industry, the operating rod provided by the application has the advantages of low density, high tensile and compressive strength, etc., and Table 1 shows the physical properties of the operating rod.

[0082] Table 1:

[0083]

[0084] As a preferred example of the above embodiment, the fiber bundle uses glass fiber and aramid fiber of the same linear density, and 8-10 fibers are used simultaneously during winding, wherein the glass fiber and the aramid fiber are combined and wound in a ratio of (1-2):1 by number; the winding layer design is a cross-layer design of two winding angles, and the specific winding angles are the included angle between the fiber direction on the mandrel and the mandrel axis and the included angle between the yarn sheet and the mandrel axis, which are 80-85° in the circumferential direction and 15-30° in the longitudinal direction, respectively. Through simulation measurement, the design ensures that the operating rod has high tensile and bending properties.

[0085] As a preferred example of the above embodiment, the winding angle of the fiber bundle is 15-85°, the winding speed is 80-150 rpm / min, the tension of a single fiber is 1.1-4.4N, the tension is reduced by 0.5-1N every 3-4 layers, and the number of layers is 12-16.

[0086] During curing, the mandrel 1 is heated to realize rapid curing of the product from the inside to the outside, and finally the operating rod with lightweight, high mechanical strength and good electrical insulation performance is obtained.

[0087] Table II is a simulated circumferential angle-offset amount correspondence table, the greater the circumferential angle, the smaller the offset amount, wherein the offset amount is a specific manifestation of the bending resistance performance, the smaller the offset amount, the better the bending resistance performance, so it can be known that the bending resistance performance is better when the circumferential angle is 80-85°.

[0088] Table II:

[0089] Bending simulation data

[0090]

[0091] Example 7

[0092] A production device of a lightweight operating rod, comprising:

[0093] A tension control device 4 for controlling the tension of the fiber bundle 5;

[0094] A dipping tank 3 internally provided with a glue scraping rod for dipping the fiber bundle 5 with a dipping liquid;

[0095] A yarn guide nozzle 2 for combing and arranging the fiber bundle 5 into a yarn sheet;

[0096] Further comprising a core mold 1 for winding the yarn sheet, the core mold 1 is hollow inside.

[0097] The core mold 1 is installed on the production device, can provide a heating heat source during winding, directly solidifies on the core mold 1 after winding is finished, and rapidly cools down in the core mold 1 after solidification is completed, so as to realize rapid demolding.

[0098] The core mold 1 is hollow inside, and is provided with an inlet and an outlet at the end, the inlet is connected with an external electric heating steam generation system, the outlet is connected with an external condensation system, and a water tank is arranged between the condensation system and the electric heating steam generation system.

[0099] The condensation system is connected with the core mold 1 through a two-way valve, the electric heating steam generation system is connected with the core mold 1 through a two-way valve, the electric heating steam generation system is connected with the water tank, the condensation system is connected with the water tank, and the water tank is connected with the core mold 1 through a two-way valve.

[0100] The water in the tank passes through the electric heating steam generation system to form high-temperature water vapor, which is introduced into the core mold 1 to solidify the product; when demolding, the water vapor first enters the water tank through the condensation system, the cooling water in the water tank first enters the cavity through the outlet pump, so that the core mold 1 is rapidly cooled, the product and the mold contact surface are separated according to the principle of thermal expansion and cold contraction, demolding is realized, and then the outlet returns to the water tank.

[0101] In use, firstly, several fibers fixed on the fiber bundle 5 are controlled by the tension control device 4, then the fiber bundle 5 is immersed into the impregnation tank 3 containing impregnation liquid and equipped with a glue scraping rod, then the fiber bundle 5 fully impregnated with the impregnation liquid passes through the guide nozzle 2, is combed and arranged to form a yarn sheet, finally the yarn sheet impregnated with the impregnation liquid is wound on the mandrel 1 according to the set winding parameters to realize product winding; the mandrel 1 is equipped with a heating device inside, a heating heat source can be provided during winding to realize preheating of the rod body, the rod body after winding can realize direct curing on the mold, the mandrel 1 rapidly cools down after curing to realize rapid demolding of the rod body.

[0102] In the description of the present specification, the description referring to the terms "one embodiment", "an example", "a specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0103] It can be known from common technical knowledge that the present application can be realized by other embodiments without departing from the spirit or essential characteristics thereof. Therefore, the above disclosed embodiments are only illustrative in all aspects, and are not the only ones. All changes within the scope of the present application or within the scope equivalent to the present application are included in the present application.

Claims

1. A method for producing a lightweight operating lever, characterized in that: The specific steps include: Step S1, soaking the pretreated fiber bundle in an impregnation liquid, wherein the fiber bundle includes glass fiber and aramid fiber, and arranging the fiber bundle to form a yarn sheet; Step S2: using production equipment to wind the yarn sheet soaked in the impregnation liquid onto the core mold (1) to obtain a first operating rod prototype; Step S3, curing the first operating rod prototype directly on the core mold (1) and then demoulding it, and performing end surface processing on the demoulded first operating rod prototype to obtain a second operating rod prototype; Step S4: spray-painting the second operating lever prototype to obtain a lightweight operating lever; In step S2, 8 to 10 fibers are arranged side by side to form a yarn sheet during winding, wherein the glass fiber and the aramid fiber in the yarn sheet are combined in a ratio of (1 to 2):1, and the yarn sheet is wound on the core mold (1) in a laying manner, and the winding angle refers to the angle between the direction of the fiber on the core mold (1) and the axis of the core mold (1), and the angle between the yarn sheet and the longitudinal axis of the core mold, which are 80 to 85 degrees in the circumferential direction and 15 to 30 degrees in the longitudinal direction, respectively, and the two angles are arranged alternately, and when winding, a layer of circumferential direction is laid, and then a layer of longitudinal direction is laid, and the number of layers laid is 12 to 16 layers; In step S2, during winding, the winding speed of the production equipment is 80 to 150 rpm / min; the tension of a single fiber is 1.1 to 4.4 N; and the tension of a single fiber decreases by 0.5 to 1 N every time 3 to 4 layers are wound.

2. The method for producing a lightweight operating lever according to claim 1, characterized in that: In step S3, the first operating lever prototype is solidified, including: The first operating rod prototype is cured at 70-80° C. for 3-5 hours, then cured at 110-120° C. for 1.5-2.5 hours, and finally cured at 120-135° C. for 1.5-2.5 hours; wherein the core mold (1) rotates throughout the curing process.

3. The method for producing a lightweight operating lever according to claim 1, characterized in that: In step S4, the surface of the second operating lever prototype after painting is ground and polished.

4. The method for producing a lightweight operating lever according to claim 1, characterized in that: In step S4, the painting is divided into three times, spraying the primer, the intermediate paint and the topcoat respectively.

5. The method for producing a lightweight operating lever according to claim 4, characterized in that: In step S4, the primer is water-based epoxy paint, the intermediate paint is water-based epoxy paint, and the topcoat is water-based acrylic polyurethane paint.

6. A lightweight operating lever obtained by the production method according to any one of claims 1 to 5, characterized in that: The rod comprises a fiber bundle, wherein the fiber bundle accounts for 60 to 80% of the mass of the rod body.

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