Installation structure of loom going part support and design and installation method thereof

Abstract

An installation structure of a loom sley support comprises a beating-up rocking shaft, a plurality of sley supports and a coupler support, the sley supports and the coupler support are fixed on the beating-up rocking shaft, a sley is fixed on the tops of the sley supports, a reed is fixed on the sley, and two ends of the sley are fixed on the coupler support. And a counterweight rod parallel to the beating-up rocking shaft is fixed at the lower end of the going part bracket. According to the design and installation method of the loom sley bracket, the stress of the sley bracket is optimized by constructing a stress model of the sley bracket, and meanwhile, the stress of each supporting point is reduced by installing analog simulation, so that the structural optimization is realized, and the vibration is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to a loom reed seat support mounting structure and its design and installation method, and is particularly suitable for optimizing the structure and force balance of the reed seat support and reducing vibration. BACKGROUND

[0002] The reed support is an important part of the weft insertion and beating-up mechanism of the loom, and is used to install the reed and the movement track of the weft insertion device. The beating-up mechanism pushes the weft yarn introduced into the shed to the weaving mouth through the reed on the reed support, interweaves with the warp yarn, and thus forms the fabric. When running at high speed, the existing reed support will generate a moment under the action of centrifugal force, causing the reed support and the beating-up mechanism to be unbalanced, resulting in large vibration. This not only affects the quality of the fabric, but also increases energy consumption and wear of the loom. The present application improves the reed support into a symmetrical structure, which is divided into upper and lower parts. The symmetrical structure balances the centrifugal force generated by the reed support and the moment generated thereby by controlling the mass and center of gravity of the upper and lower parts, thereby reducing the vibration of the beating-up shaft.

[0003] The existing technology realizes overall balance by installing a counterweight on the solid shaft, so that the overall center of mass of the reed system composed of the reed, the reed seat, the reed seat support and the counterweight moves towards the shaft center, reducing the eccentric load of the reed system during operation. The existing design ignores the influence of various eccentric loads on the shaft and the shaft support, as well as the weight of the reed system, thereby causing severe vibration of the beating-up shaft. The present application takes the minimum force of the reed support on the shaft as the design goal, optimizes the structure, center of mass position, weight of the reed seat support, as well as the size and installation position of the counterweight rod, reduces the force of the reed seat support on the shaft, and in the design, not only the influence of the center of mass position and mass of the reed and the reed seat on the shaft is considered, but also the size of the counterweight rod is considered to change with the center of mass position and mass of the reed and the reed seat, thereby adapting to the vibration reduction problem of different types of reeds. SUMMARY

[0004] The present application aims to overcome the problem of severe vibration in the prior art, and provides a loom reed seat support mounting structure and its design and installation method, which optimizes the structure and force balance of the reed seat support and reduces vibration.

[0005] To achieve the above purpose, the technical solution of the present application is as follows:

[0006] In a first aspect, the present application provides a loom reed seat support mounting structure, which comprises a beating-up shaft and a plurality of reed seat supports and coupling support brackets fixed thereon, the top of the plurality of reed seat supports is fixed with a reed seat, the reed seat is fixed with a reed, and the two ends of the reed seat are fixed on the coupling support brackets, and the lower end of the reed seat support is fixed with a counterweight rod arranged in parallel with the beating-up shaft.

[0007] The reed seat support comprises oppositely arranged upper and lower reed seat supports, and the two sides of the upper and lower reed seat supports are clamped and matched with beating swing shafts after being connected by bolts.

[0008] The upper reed seat support comprises a reed seat support and a first swing shaft fixing seat, the first swing shaft fixing seat is a semicircular ring buckle structure provided with left and right fixing ears, the top of the first swing shaft fixing seat is connected with the bottom of the reed seat support as an integral structure, the top of the reed seat support is provided with a reed seat mounting groove, and the middle of the reed seat mounting groove is provided with a threaded fixing hole; the two sides of the reed seat support are provided with oppositely arranged weight reduction grooves, and the weight reduction grooves are used to change the center of mass of the upper reed seat support by adjusting the opening position and shape thereof.

[0009] The lower reed seat support comprises a support counterweight and a second swing shaft fixing seat, the second swing shaft fixing seat has the same structure as the first swing shaft fixing seat, the bottom of the second swing shaft fixing seat is connected with the top of the support counterweight as an integral structure, the side surface of the support counterweight is provided with a counterweight rod mounting groove, and the counterweight rods are fixed in the oppositely arranged counterweight rod mounting grooves on adjacent lower reed seat supports, and the counterweight rod mounting groove is used to change the distance from the counterweight rod to the beating swing shaft by adjusting the opening position thereof.

[0010] The support counterweight is provided with a weight reduction hole, and the weight reduction hole is used to change the center of mass of the lower reed seat support by adjusting the opening position and shape thereof.

[0011] In a second aspect, the application provides a design and installation method of a loom reed seat support, the design and installation method is based on the installation structure of the loom reed seat support, and the design and installation method comprises the following steps:

[0012] S1, based on the installation structure of the loom reed seat support, a stress model of the reed seat support is constructed;

[0013] S2, a stress target function of the reed seat support is constructed, optimal parameter distribution is obtained by solving the stress target function of the reed seat support, the installation structure of the loom reed seat support is adjusted according to the optimal parameter distribution, and a structure model of the optimized reed seat support and counterweight rod is obtained;

[0014] S3, based on the structure model of the optimized reed seat support and counterweight rod, a three-dimensional stress analysis model of the swing shaft is constructed, the best installation point of each reed seat support is obtained by taking the minimum stress change of the swing shaft support point and the balance of the stress of each support point as the target and solving the three-dimensional stress analysis model of the swing shaft, the length of the counterweight rod is adjusted based on the installation point, and the installation optimization structure of the reed seat support on the swing shaft is obtained.

[0015] In the S1, based on the base installation structure of the reed seat support, the force model of the swing shaft is divided into I parts according to the fixed point of the reed seat for analysis: wherein the structure of the I-2 part reed seat support and the counterweight rod combination installation, the structure parameters of the reed seat support between different parts are the same, and the counterweight rods between different parts are adjustable;

[0016] The force model of the reed seat support is constructed:

[0017] ;

[0018] Wherein, H ix is the concentrated load in the horizontal direction of the i-th part of the swing shaft at the reed seat support, i=2, 3…I-1; H iy is the concentrated load in the vertical direction of the i-th part of the swing shaft, i=2, 3…I-1; represents the centrifugal force of the i-th part of the steel reed and reed seat combination, θ is the angular displacement of the swing shaft, is the centrifugal force of the upper support of the reed seat, is the centrifugal force of the i-th part of the counterweight rod, is the centrifugal force of the lower support of the reed seat, is the gravity of the i-th part of the counterweight rod, is the gravity of the lower support of the reed seat, is the gravity of the upper support of the reed seat, is the gravity of the i-th part of the steel reed and reed seat combination;

[0019] According to the centrifugal force formula, the force model of the reed seat support can be rewritten as:

[0020] ;

[0021] Wherein: is the mass of the i-th part of the steel reed and reed seat combination, is the distance of the mass center of the steel reed and reed seat combination to the swing shaft axis, is the mass of the upper support of the reed seat, is the distance of the mass center of the upper support of the reed seat to the swing shaft axis, is the mass of the lower support of the reed seat, is the distance of the mass center of the lower support of the reed seat to the swing shaft axis, is the mass of the i-th part of the counterweight rod, is the distance of the mass center of the i-th part of the counterweight rod to the swing shaft axis, ω is the angular velocity of the swing shaft, and .

[0022] In the S2, the force target function of the reed seat support is constructed:

[0023] min(H ix +H iy );

[0024] The reed seat support force target function is constrained, and the mass and shape of the reed 5 and the reed seat 4 are unchanged, and the following constraints are met:

[0025] ;

[0026] ;

[0027] Where J is the sum of the moments of inertia of the reed, the reed seat, the upper reed seat support, the lower reed seat support and the counterweight bar, and the maximum and minimum values are , ; The total moment of inertia of the shaft support around the center of the rocking shaft is The moment of inertia of the rocking shaft is The driving torque of the rocking shaft is The beating resistance torque of the fabric is The moment of inertia of the upper reed seat support around its center of mass is The moment of inertia of the lower reed seat support around its center of mass is The moment of inertia of the reed and reed seat combination around its center of mass is The moment of inertia of the i-th part of the counterweight bar around its center of mass is The mass of the reed and reed seat combination is The distance of the center of mass of the reed and reed seat combination from the rocking shaft axis is The mass of the upper reed seat support is , ; The distance of the center of mass of the upper reed seat support from the rocking shaft axis is , ; The mass of the lower reed seat support is , ; The distance of the center of mass of the lower reed seat support from the rocking shaft axis is , ; The mass of the i-th part of the counterweight bar is , ; The distance of the center of mass of the i-th part of the counterweight bar from the rocking shaft axis is , ; n is the number of reed seat supports;

[0028] The meta-learning algorithm is used to solve the reed seat support force target function to obtain the optimal parameter distribution: the optimal mass M上支 The distance to the highest quality center is L 上支 The optimal mass M of the reed base support 下支 The distance to the highest quality center is L 下支 The optimal counterweight mass M in the i-th part i配重棒 The distance to the highest quality center is L i配重棒 , i=2、3…I-1.

[0029] Adjust the installation structure of the reed support bracket of the loom according to the obtained optimal parameter allocation so that the 3D model of the reed support bracket satisfies the optimal parameter allocation:

[0030] The design of the support structure on the reed base involves adjusting the thickness and width of the support in the drafting software to ensure that the mass of the support on the reed base is within a certain range (M). 上支 The upper and lower limits are adjusted by 10%, and then the design of the weight-reducing groove of the reed holder upper bracket and the thickness of the left and right fixing ears are optimized to ensure that the reed holder upper bracket meets the M standard. 上支 and L 上支 Requirements;

[0031] The design of the reed base support structure was adjusted by modifying the thickness and width of the reed base support in the drafting software to ensure that the mass of the reed base support is within a certain range (M). 下支 Fluctuation within 10% up or down, and also based on M i配重棒 and L i配重棒 Determine the diameter and length of the counterweight bar, as well as the position and dimensions of the counterweight bar mounting slot. Then, optimize the design of the weight-reducing hole in the lower support of the reed seat and the thickness of the left and right fixing ears to ensure that the lower support of the reed seat meets M. 下支 and L 下支 The requirements were met; an optimized structural model of the reed support and its counterweight was obtained.

[0032] In step S3, the optimized reed support bracket and its counterweight bar structural model are assembled into the three-dimensional model of the weft insertion rocker. CAE technology is applied to establish a three-dimensional model of the weft insertion rocker based on different typical working conditions.

[0033] The weft-beating rocker has I-1 supports. The leftmost and rightmost supports are wall panel supports, and the middle support is a sliding bearing support. The weft-beating rocker has 2 (I-2) reed seat supports. The I-1 fixed support points are simplified to spring constraints in the X and Y directions. The steel reed, steel reed support and counterweight are simplified to concentrated forces, and the rocker is simplified to a beam. The mechanical model diagram of the force on the weft-beating rocker under different typical working conditions is obtained.

[0034] Based on the mechanical model diagram of the force on the weft rocker shaft, the force on I-1 supports is analyzed. The optimal installation point of each reed support is determined with the goal of minimizing the force change at each support point and minimizing the root mean square error of the force among I-1 support points.

[0035] According to the optimal installation point of each reed seat support 1 and M i配重棒 , the length and diameter of each counterweight rod are confirmed, and the installation optimization structure of the reed seat support on the beating shaft is obtained by adjusting the three-dimensional model of the beating shaft according to the length and diameter of each counterweight rod.

[0036] Compared with the prior art, the beneficial effects of the present application are:

[0037] 1. In the installation structure of the loom reed seat support, the reed seat support is divided into an upper reed seat support and a lower reed seat support, the center of mass of the upper reed seat support and the lower reed seat support is adjusted respectively through design simulation, the rotation of the reed seat support is balanced, and further the rotation of the reed seat support, the reed and the reed support is balanced through the counterweight rod, so that the vibration is effectively reduced.

[0038] 2. In the design and installation method of the loom reed seat support, the minimum resultant force of the reed seat support is taken as the design target, the mechanical model and the constraint of the reed seat support are constructed, the structure of the upper reed seat support and the lower reed seat support is optimized, and the mass and the center of mass of the counterweight rod is optimized, so that the resultant force of the gravity and the centrifugal force acting on the reed seat support is reduced, the exciting load applied by the reed seat support to the beating shaft is reduced, and the purpose of effectively reducing the vibration is achieved. At the same time, through the simulation technology, the minimum force change of the beating shaft support point and the balanced force of each support point are taken as the target, the installation point position of the reed seat support is optimized, and the vibration is effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 is a structural schematic diagram of the present application.

[0040] Figure 2 is a schematic diagram of the force model of the beating shaft in Example 4.

[0041] Figure 3 is a schematic diagram of the force model of the beating shaft in Example 4.

[0042] Figure 4 is a mechanical model diagram of the force of the beating shaft 2 in Example 4.

[0043] In the figure: reed seat support 1, beating shaft 2, coupling support 3, reed seat 4, reed 5, upper reed seat support 6, reed seat support 61, first beating shaft fixing seat 62, fixing lug 63, reed seat installation groove 64, weight reduction groove 65, lower reed seat support 7, support counterweight 71, second beating shaft fixing seat 72, counterweight rod installation groove 73, counterweight rod 8. DETAILED DESCRIPTION

[0044] The present application will be further described in detail below in combination with the description of the drawings and specific embodiments.

[0045] Example 1:

[0046] Referring toFigures 1 to 3 The application discloses a mounting structure of a loom reed seat support, which comprises a beating shaft 2, a plurality of reed seat supports 1 fixed on the beating shaft 2 and a coupling support 3.

[0047] The reed seat support 1 comprises oppositely arranged upper and lower reed seat supports 6 and 7, and the upper and lower reed seat supports 6 and 7 are clamped and matched with the beating shaft 2 through bolt connection on both sides.

[0048] The upper reed seat support 6 comprises a reed seat support 61 and a first shaft fixing seat 62, the first shaft fixing seat 62 is a semicircular ring buckle structure provided with left and right fixing ears 63, the top of the first shaft fixing seat 62 is connected with the bottom of the reed seat support 61 as an integral structure, the top of the reed seat support 61 is provided with a reed seat mounting groove 64, and a threaded fixing hole is arranged in the middle of the reed seat mounting groove 64; and the two sides of the reed seat support 61 are provided with oppositely arranged weight reduction grooves 65, the weight reduction grooves 65 are used for changing the center of mass of the upper reed seat support 6 by adjusting the opening position and shape.

[0049] The lower reed seat support 7 comprises a support counterweight 71 and a second shaft fixing seat 72, the second shaft fixing seat 72 is the same in structure as the first shaft fixing seat 62, the bottom of the second shaft fixing seat 72 is connected with the top of the support counterweight 71 as an integral structure, the side surface of the support counterweight 71 is provided with a counterweight rod mounting groove 73, and the counterweight rod mounting grooves 73 oppositely arranged on adjacent lower reed seat supports 7 are fixed with counterweight rods 8, and the counterweight rod mounting grooves 73 are used for changing the distance from the counterweight rods 8 to the beating shaft 2 by adjusting the opening position.

[0050] Embodiment 2:

[0051] Embodiment 2 is basically the same as Embodiment 1, and the difference lies in that:

[0052] The support counterweight 71 is provided with a weight reduction hole, and the weight reduction hole is used for changing the center of mass of the lower reed seat support 7 by adjusting the opening position and shape.

[0053] Embodiment 3:

[0054] Referring to Figures 2-4 A design and mounting method of a loom reed seat support, the design and mounting method is based on the mounting structure of the loom reed seat support, and comprises the following steps.

[0055] S1, based on the mounting structure of the loom reed seat support, a stress model of the reed seat support is constructed.

[0056] According to the fixed point of the reed seat 4, the force model of the swing shaft is divided into I parts for analysis: among them, I-2 parts of the reed seat bracket 1 are combined with the counterweight rod 8, the structure parameters of the reed seat bracket 1 between different parts are the same, and the counterweight rod 8 between different parts is adjustable;

[0057] The force model of the reed seat bracket is constructed:

[0058] ;

[0059] Among them, H ix is the concentrated load of the i-th part of the swing shaft in the horizontal direction at the reed seat bracket, i=2, 3…I-1; H iy is the concentrated load of the i-th part of the swing shaft in the vertical direction, i=2, 3…I-1; represents the centrifugal force of the i-th part of the steel reed and reed seat combination, θ is the angular displacement of the swing shaft, is the centrifugal force of the upper bracket of the reed seat, is the centrifugal force of the i-th part of the counterweight rod, is the centrifugal force of the lower bracket of the reed seat, is the gravity of the i-th part of the counterweight rod, is the gravity of the lower bracket of the reed seat, is the gravity of the upper bracket of the reed seat, is the gravity of the i-th part of the steel reed and reed seat combination;

[0060] According to the centrifugal force formula, the force model of the reed seat bracket can be rewritten as:

[0061]

[0062] Among them: is the mass of the i-th part of the steel reed and reed seat combination, is the distance of the mass center of the steel reed and reed seat combination to the swing shaft axis, is the mass of the upper bracket of the reed seat, is the distance of the mass center of the upper bracket of the reed seat to the swing shaft axis, is the mass of the lower bracket of the reed seat, is the distance of the mass center of the lower bracket of the reed seat to the swing shaft axis, is the mass of the i-th part of the counterweight rod, is the distance of the mass center of the i-th part of the counterweight rod to the swing shaft axis, and ω is the angular velocity of the swing shaft, and .

[0063] S2 constructs a force target function of the reed seat bracket, solves the force target function of the reed seat bracket to obtain optimal parameter distribution, adjusts the installation structure of the loom reed seat bracket according to the optimal parameter distribution, and obtains an optimized structure model of the reed seat bracket and the counterweight rod;

[0064] In S2, the force target function of the reed seat support is constructed:

[0065] min(H ix +H iy );

[0066] The constraints of the force target function of the reed seat support are as follows under the condition that the mass and shape of the reed 5 and the reed seat 4 are unchanged:

[0067] ;

[0068] ;

[0069] Wherein, J is the sum of the rotational inertia of the steel reed, the reed seat, the upper support of the reed seat, the lower support of the reed seat and the counterweight rod, the maximum and minimum values of which are respectively 、 ; is the total rotational inertia of the shaft support around the center of the rocking shaft; is the rotational inertia of the rocking shaft; is the driving torque of the rocking shaft; is the beating resistance torque of the fabric; is the rotational inertia of the upper support of the reed seat around its center of mass; is the rotational inertia of the lower support of the reed seat around its center of mass; is the rotational inertia of the steel reed and the reed seat combination around its center of mass; is the rotational inertia of the i-th part of the counterweight rod around its center of mass; is the mass of the steel reed and the reed seat combination; is the distance of the center of mass of the steel reed and the reed seat combination from the rocking shaft axis; is the mass of the upper support of the reed seat, the maximum and minimum values of which are respectively 、 ; is the distance of the center of mass of the upper support of the reed seat from the rocking shaft axis, the maximum and minimum values of which are respectively 、 ; is the mass of the lower support of the reed seat, the maximum and minimum values of which are respectively 、 ; is the distance of the center of mass of the lower support of the reed seat from the rocking shaft axis, the maximum and minimum values of which are respectively 、 ; is the mass of the i-th part of the counterweight rod, the maximum and minimum values of which are respectively 、 ; is the distance of the center of mass of the i-th part of the counterweight rod from the rocking shaft axis, the maximum and minimum values of which are respectively 、 ; n is the number of the sley support;

[0070] wherein, in the three-dimensional model of the upper sley support 6 and the lower sley support 7, the limit value of the dimensional change is determined respectively to obtain the constraint of the mass of the upper sley support 、 、 、 ; in the three-dimensional model of the upper sley support 6 in the loom, the position and the size of the lightening groove 65 and the thickness of the left and right fixing ears are adjusted to obtain the constraint of the distance of the mass center of the upper sley support from the axis of the swing shaft under the premise of ensuring the strength of the upper sley support 6 、 ; in the three-dimensional model of the lower sley support 7, the position and the size of the lightening hole and the thickness of the left and right fixing ears are adjusted to obtain the constraint of the distance of the mass center of the lower sley support from the axis of the swing shaft under the premise of ensuring the strength of the lower sley support 7 、 ; based on the size range of the counterweight rod mounting groove 73 and the variable length range of the counterweight rod, the constraint of the mass of the counterweight rod is determined 、 ; based on the variable range of the position of the counterweight rod mounting groove 73, the constraint of the distance of the mass center is determined 、 .

[0071] The meta-learning algorithm is used to solve the force target function of the sley support to obtain the optimal parameter distribution: the optimal mass M 上支 and the optimal distance of the mass center L 上支 of the upper sley support, the optimal mass M 下支 and the optimal distance of the mass center L 下支 of the lower sley support, and the optimal mass M i配重棒 and the optimal distance of the mass center L i配重棒 of the i-th part of the counterweight rod, i=2, 3…I-1.

[0072] According to the obtained optimal parameter distribution, the mounting structure of the sley support of the loom is adjusted so that the 3D model of the sley support meets the optimal parameter distribution:

[0073] The upper sley support structure is adjusted and designed, the thickness and the width of the upper sley support are modified in the drawing software, the mass of the upper sley support is floated by 10% around M 上支 , and then the design of the lightening groove and the thickness of the left and right fixing ears of the upper sley support are optimized so that the upper sley support meets the requirements of M 上支 and L 上支 ;

[0074] The lower sley support structure is adjusted and designed, the thickness and the width of the lower sley support are modified in the drawing software, the mass of the lower sley support is floated by 10% around M 下支Upper and lower 10% floating, while according to M i配重棒 and L i配重棒 The diameter length of the counterweight bar is determined, while the position and size of the counterweight bar mounting groove 73 are determined, and then the design of the weight-reducing hole of the reed seat lower support and the thickness of the left and right fixing ears are optimized to make the reed seat lower support meet the requirements of M 下支 and L 下支 ; the optimized structure model of the reed seat support and its counterweight bar is obtained.

[0075] S3, based on the optimized structure model of the reed seat support and its counterweight bar, constructs a three-dimensional force analysis model of the swing shaft, takes the minimum force change of the swing shaft support points and the balanced force of each support point as the target, solves the three-dimensional force analysis model of the swing shaft, obtains the optimal installation point of each reed seat support, adjusts the length of the counterweight bar based on the installation point, and obtains the installation optimization structure of the reed seat support on the swing shaft.

[0076] In S3, the optimized structure model of the reed seat support and its counterweight bar is assembled into the beating-up swing shaft three-dimensional model, and the CAE technology is applied to establish the beating-up swing shaft three-dimensional model based on different typical working conditions.

[0077] The beating-up swing shaft 2 has I-1 supports, the leftmost and rightmost supports are wall plate supports, and the middle supports are sliding bearing supports. The beating-up swing shaft 2 has 2 (I-2) reed seat supports. The I-1 fixed support points are simplified as spring constraints in X and Y directions, the reed, reed support and counterweight bar are simplified as concentrated forces, and the swing shaft is simplified as a beam, to obtain the mechanical model diagram of the beating-up swing shaft 2 under stress in different typical working conditions.

[0078] According to the obtained mechanical model diagram of the beating-up swing shaft 2 under stress, the stress of the I-1 supports is analyzed, and the optimal installation point of each reed seat support 1 is solved with the minimum force change of each support point and the minimum mean square deviation of the stress between the I-1 supports as the target.

[0079] According to the optimal installation point of each reed seat support 1 and M i配重棒 , the length and diameter of each counterweight bar are confirmed, and the beating-up swing shaft three-dimensional model is adjusted according to the obtained length and diameter of each counterweight bar, to obtain the installation optimization structure of the reed seat support on the swing shaft.

[0080] Example 4:

[0081] Referring to Figure 2 , the beating-up structure of a certain loom is optimized, including the following steps:

[0082] S1, based on the installation structure of the loom reed seat support, constructs a force model of the reed seat support;

[0083] According to the fixed point of the reed seat 4, the force model of the swing shaft is divided into five parts for analysis: three parts of the reed seat bracket 1 are combined with the counterweight rod 8, the structure parameters of the reed seat bracket 1 in different parts are the same, and the counterweight rod 8 in different parts is adjustable;

[0084] The force model of the reed seat bracket is constructed:

[0085] ;

[0086] Wherein, H ix is the concentrated load in the horizontal direction of the i-th part of the swing shaft at the reed seat bracket, i=2, 3, 4; H iy is the concentrated load in the vertical direction of the i-th part of the swing shaft, i=2, 3, 4; represents the centrifugal force of the i-th part of the steel reed and reed seat combination, θ is the angular displacement of the swing shaft, is the centrifugal force of the upper bracket of the reed seat, is the centrifugal force of the i-th part of the counterweight rod, is the centrifugal force of the lower bracket of the reed seat, is the gravity of the i-th part of the counterweight rod, is the gravity of the lower bracket of the reed seat, is the gravity of the upper bracket of the reed seat, is the gravity of the i-th part of the steel reed and reed seat combination;

[0087] According to the centrifugal force formula, the force model of the reed seat bracket can be rewritten as:

[0088] ;

[0089] Wherein: is the mass of the i-th part of the steel reed and reed seat combination, is the distance of the mass center of the steel reed and reed seat combination to the swing shaft axis, is the mass of the upper bracket of the reed seat, is the distance of the mass center of the upper bracket of the reed seat to the swing shaft axis, is the mass of the lower bracket of the reed seat, is the distance of the mass center of the lower bracket of the reed seat to the swing shaft axis, is the mass of the i-th part of the counterweight rod, is the distance of the mass center of the i-th part of the counterweight rod to the swing shaft axis, and ω is the angular velocity of the swing shaft, and .

[0090] In S2, the force target function of the reed seat bracket is constructed: min(H ix +H iy );

[0091] The reed seat support is constrained by the force target function, the mass and shape of the reed 5 and the reed seat 4 are unchanged, and the following constraints are met:

[0092] ;

[0093] ;

[0094] wherein J is the sum of the rotational inertia of the reed, the reed seat, the upper reed seat support, the lower reed seat support and the counterweight bar, the maximum and minimum values of which are respectively , ; is the total rotational inertia of the coupling support around the center of the rocking shaft; is the rotational inertia of the rocking shaft; is the driving torque of the rocking shaft; is the beating resistance torque of the fabric; is the rotational inertia of the upper reed seat support around its center of mass; is the rotational inertia of the lower reed seat support around its center of mass; is the rotational inertia of the reed and reed seat combination around its center of mass; is the rotational inertia of the i-th part of the counterweight bar around its center of mass; is the mass of the reed and reed seat combination; is the distance of the center of mass of the reed and reed seat combination from the rocking shaft axis; is the mass of the upper reed seat support, the maximum and minimum values of which are respectively , ; is the distance of the center of mass of the upper reed seat support from the rocking shaft axis, the maximum and minimum values of which are respectively , ; is the mass of the lower reed seat support, the maximum and minimum values of which are respectively , ; is the distance of the center of mass of the lower reed seat support from the rocking shaft axis, the maximum and minimum values of which are respectively , ; is the mass of the i-th part of the counterweight bar, the maximum and minimum values of which are respectively , ; is the distance of the center of mass of the i-th part of the counterweight bar from the rocking shaft axis, the maximum and minimum values of which are respectively , ;

[0095] The particle swarm algorithm is used to solve the reed seat support force target function to obtain the optimal parameter distribution: the optimal mass M 上支 and the optimal center of mass distance L 上支, the optimal mass M of the lower reed seat support 下支 and the optimal center of mass distance L 下支 , the optimal mass M of the i-th part of the counterweight rod i配重棒 and the optimal center of mass distance L i配重棒 , i = 2, 3, 4.

[0096] According to the obtained optimal parameter distribution, the installation structure of the reed seat support of the loom is adjusted to make the 3D model of the reed seat support satisfy the optimal parameter distribution:

[0097] The structure adjustment design of the upper reed seat support, the thickness and width of the upper reed seat support are modified in the drawing software, so that the mass of the upper reed seat support is floated by 10% up and down around M 上支 , and then the design of the weight-reducing groove and the thickness of the left and right fixing ears of the upper reed seat support are optimized to make the upper reed seat support satisfy the requirements of M 上支 and L 上支 ;

[0098] The structure adjustment design of the lower reed seat support, the thickness and width of the lower reed seat support are modified in the drawing software, so that the mass of the lower reed seat support is floated by 10% up and down around M 下支 , and then the diameter and length of the counterweight rod are determined according to M i配重棒 and L i配重棒 , and the position and size of the counterweight rod mounting groove 73 are determined, and then the design of the weight-reducing hole and the thickness of the left and right fixing ears of the lower reed seat support are optimized to make the lower reed seat support satisfy the requirements of M 下支 and L 下支 ; the structure model of the optimized reed seat support and its counterweight rod is obtained.

[0099] S3, based on the structure model of the optimized reed seat support and its counterweight rod, constructs a three-dimensional force analysis model of the swing shaft, takes the minimum change of the force of the swing shaft support point and the balance of the forces of each support point as the target, solves the three-dimensional force analysis model of the swing shaft, obtains the best installation point of each reed seat support, adjusts the length of the counterweight rod based on the installation point, and obtains the installation optimization structure of the reed seat support on the swing shaft.

[0100] In S3, the structure model of the optimized reed seat support and its counterweight rod is assembled into the beating swing shaft three-dimensional model, and the CAE technology is applied to establish the beating swing shaft three-dimensional model based on different typical working conditions;

[0101] The beating swing shaft 2 has four supports, the leftmost and rightmost supports are wall plate supports, and the middle supports are sliding bearing supports. The beating swing shaft 2 has six reed seat supports. The four fixed support points are simplified as spring constraints in X and Y directions, the reed, the reed support and the counterweight rod are simplified as concentrated forces, and the swing shaft is simplified as a beam. The mechanical model diagram of the force of the beating swing shaft 2 in different typical working conditions is obtained, see Figure 4 ;

[0102] The beating-up swing shaft system is simulated under the conditions of 600 r / min and 1000 r / min, the forces of the four supports are analyzed according to the obtained mechanical model diagram of the force of the beating-up swing shaft 2, and the optimal installation points of each reed holder support 1 are solved with the minimum force change of each support point and the minimum mean square deviation of the forces between the four support points as the objectives;

[0103]

[0104] The first section of the counterweight rod is 350 mm long, the second section is 440 mm long, and the third section is 350 mm long.

[0105] According to the optimal installation points of each reed holder support 1 and the M i配重棒 The length and diameter of each counterweight rod are confirmed, the obtained length and diameter of each counterweight rod are used to adjust the three-dimensional model of the beating-up swing shaft, and the optimized installation structure of the reed holder support on the swing shaft is obtained.

[0106] The existing RFJA30-230 type loom is used to simulate and analyze the existing structure (similar to CN203668612U) and the improved structure of the reed system, and the results are compared and analyzed: the mass of the reed holder support and the counterweight is reduced by 52.72%, the moment of inertia of the reed holder support and the counterweight is increased by 1.23%, and the moment of inertia of the reed system is increased by 0.53%. The force simulation analysis is performed on the left and right wall plates and the left and right bearing seats: the load in the Y direction (the up-down direction of the loom) is greatly reduced, with a reduction of nearly 40%, but the load in the X direction (the front-back direction of the loom) is greatly increased. However, the overall resultant force is still greatly reduced, with a reduction of more than 30%.

Claims

1. A mounting structure of a sley bracket of a loom, characterized by: The beating shaft (2) and the multiple reed seat supports (1) and the coupling supports (3) fixed thereon, the top of the multiple reed seat supports (1) is fixed with the reed seat (4), the reed seat (4) is fixed with the reed (5), the two ends of the reed seat (4) are fixed on the coupling supports (3), and the lower end of the reed seat support (1) is fixed with the counterweight rod (8) arranged in parallel with the beating shaft (2).

2. A mounting structure for a loom sley support according to claim 1, characterised in that: The reed seat support (1) comprises the upper reed seat support (6) and the lower reed seat support (7) arranged oppositely, and the two sides of the upper reed seat support (6) and the lower reed seat support (7) are connected by bolts and clamped with the beating shaft (2).

3. A mounting structure for a loom sley support according to claim 2, characterised in that: The upper reed seat support (6) comprises the reed seat support (61) and the first rocking shaft fixing seat (62), the first rocking shaft fixing seat (62) is a semicircular ring buckle structure provided with left and right fixing ears (63), the top of the first rocking shaft fixing seat (62) is connected with the bottom of the reed seat support (61) as an integral structure, the top of the reed seat support (61) is provided with the reed seat mounting groove (64), the middle part of the reed seat mounting groove (64) is provided with the threaded fixing hole, and the two sides of the reed seat support (61) are provided with the weight-reducing grooves (65) arranged oppositely.

4. A mounting structure for a loom sley support according to claim 3, characterised in that: The lower reed seat support (7) comprises the support counterweight (71) and the second rocking shaft fixing seat (72), the second rocking shaft fixing seat (72) is the same in structure as the first rocking shaft fixing seat (62), the bottom of the second rocking shaft fixing seat (72) is connected with the top of the support counterweight (71) as an integral structure, the side surface of the support counterweight (71) is provided with the counterweight rod mounting groove (73), the counterweight rod (8) is fixed in the counterweight rod mounting grooves (73) arranged oppositely on the adjacent lower reed seat supports (7), and the counterweight rod mounting grooves (73) are used for adjusting the distance from the counterweight rod (8) to the beating shaft (2) by adjusting the opening position.

5. The mounting structure of the reed seat support of the loom according to claim 4, characterized in that: The support counterweight (71) is provided with the weight-reducing holes, and the weight-reducing holes are used for adjusting the mass center position of the lower reed seat support (7) by adjusting the opening position and shape.

6. A method of designing and installing a sley carrier of a loom, characterized in that: The design mounting method is based on the mounting structure of the reed seat support of the loom according to any one of claims 1-5, and the design mounting method comprises the following steps: S1, constructing a force model of the reed seat support based on the mounting structure of the reed seat support of the loom; S2, constructing a force target function of the reed seat support, solving the force target function of the reed seat support to obtain optimal parameter distribution, adjusting the mounting structure of the reed seat support of the loom according to the optimal parameter distribution, and obtaining the structure model of the optimized reed seat support and counterweight rod; S3, based on the optimized structure model of the reed seat support and the counterweight rod, constructs a three-dimensional force analysis model of the swing shaft, takes the minimum force change of the swing shaft support point and the balanced force of each support point as the target, solves the three-dimensional force analysis model of the swing shaft, obtains the optimal installation point of each reed seat support, adjusts the length of the counterweight rod based on the installation point, and obtains the installation optimization structure of the reed seat support on the swing shaft.

7. The design and installation method of the reed seat support of the loom according to claim 6, characterized in that: In S1, the installation structure of the reed seat support of the loom is analyzed according to the fixed point of the reed seat (4) and the force model of the swing shaft is divided into I parts: the structure of the reed seat support (1) and the counterweight rod (8) in I-2 parts is combined and installed, the structure parameters of the reed seat support (1) between different parts are the same, and the counterweight rod (8) between different parts is adjustable; The force model of the reed seat support is constructed: ； where H ix is the concentrated load in the horizontal direction of the i-th part of the swing shaft at the reed seat support, i = 2, 3,..., I-1; H iy is the concentrated load in the vertical direction of the i-th part of the swing shaft; is the centrifugal force of the i-th part of the reed and reed seat assembly, θ is the angular displacement of the swing shaft, is the centrifugal force of the upper support of the reed seat, is the centrifugal force of the i-th part of the counterweight rod, is the centrifugal force of the lower support of the reed seat, is the gravity of the i-th part of the counterweight rod, is the gravity of the lower support of the reed seat, is the gravity of the upper support of the reed seat, is the gravity of the i-th part of the reed and reed seat assembly; According to the centrifugal force formula, the force model of the reed seat support can be rewritten as: ； wherein: M is the mass of the i-th part of the reed and reed seat assembly, is the distance of the center of mass of the reed and reed seat assembly relative to the axis of the swing shaft, M is the mass of the upper bracket of the reed seat, is the distance of the center of mass of the upper bracket of the reed seat relative to the axis of the swing shaft, M is the mass of the lower bracket of the reed seat, is the distance of the center of mass of the lower bracket of the reed seat relative to the axis of the swing shaft, M is the mass of the i-th part of the counterweight, is the distance of the center of mass of the i-th part of the counterweight relative to the axis of the swing shaft, ω is the angular velocity of the swing shaft, and .

8. The design and installation method of the reed seat support of the loom according to claim 6, characterized in that: In the S2, a force target function of the reed seat support is constructed: min(H ix +H iy ) The constraint of the force target function of the reed seat support is that under the condition that the mass and shape of the reed (5) and the reed seat (4) are unchanged, the following constraints are met: ； ； Wherein, J is the total moment of inertia of the reed, reed seat, upper reed seat support, lower reed seat support and counterweight rod, the maximum and minimum values of which are , ; is the total moment of inertia of the shaft support around the center of the rocking shaft; is the moment of inertia of the rocking shaft; is the driving torque of the rocking shaft; is the beating resistance torque of the fabric; is the moment of inertia of the upper reed seat support around its own center of mass; is the moment of inertia of the lower reed seat support around its own center of mass; is the moment of inertia of the reed and reed seat combination around its own center of mass; is the moment of inertia of the ith part of the counterweight rod around its own center of mass; is the mass of the reed and reed seat combination; is the distance of the center of mass of the reed and reed seat combination from the rocking shaft axis; is the mass of the upper reed seat support, the maximum and minimum values of which are , ; is the distance of the center of mass of the upper reed seat support from the rocking shaft axis, the maximum and minimum values of which are , ; is the mass of the lower reed seat support, the maximum and minimum values of which are , ; is the distance of the center of mass of the lower reed seat support from the rocking shaft axis, the maximum and minimum values of which are , ; is the mass of the ith part of the counterweight rod, the maximum and minimum values of which are , ; is the distance of the center of mass of the ith part of the counterweight rod from the rocking shaft axis, the maximum and minimum values of which are , ; n is the number of reed seat supports; Using meta-learning algorithm to solve the force target function of reed seat support, the optimal parameter distribution is obtained: the optimal mass M 上支 and the optimal centroid distance L 上支 of the upper support of the reed seat, the optimal mass M 下支 and the optimal centroid distance L 下支 of the lower support of the reed seat, and the optimal mass M i配重棒 and the optimal centroid distance L i配重棒 of the i-th part of the counterweight rod, i=2, 3…I-1.

9. The design and installation method of the reed seat support of the loom according to claim 8, characterized in that: According to the obtained optimal parameter distribution, the installation structure of the reed seat support of the loom is adjusted to make the 3D model of the reed seat support meet the optimal parameter distribution: The thickness and width of the upper support structure of the reed seat are modified in the drawing software to make the mass of the upper support structure of the reed seat M 上支 The upper and lower 10% floating is then optimized, and the design of the weight-reducing groove and the thickness of the left and right fixing ears of the upper support structure of the reed seat are optimized to make the upper support structure of the reed seat meet the requirements of M 上支 and L 上支 . The structure of the lower support of the reed seat is adjusted and designed, the thickness and width of the lower support of the reed seat are modified in the drawing software, the mass of the lower support of the reed seat is adjusted to M 下支 The upper and lower 10% floating is adjusted, and the mass of the lower support of the reed seat is adjusted according to M i配重棒 and L i配重棒 The diameter and length of the counterweight rod are determined, the position and size of the mounting groove (73) of the counterweight rod are determined, the design of the weight-reducing hole of the lower support of the reed seat and the thickness of the left and right fixing ears are optimized, the lower support of the reed seat meets the requirements of M 下支 and L 下支 , and the structure model of the optimized lower support of the reed seat and the counterweight rod is obtained.

10. The design and installation method of the reed seat support of the loom according to claim 9, characterized in that: In S3, the optimized structure model of the reed seat support and the counterweight rod is assembled into the beating swing shaft three-dimensional model, and the CAE technology is applied to establish the beating swing shaft three-dimensional model based on different typical working conditions; The beating swing shaft (2) has I-1 supports, the leftmost and rightmost supports are wall plate supports, the middle supports are sliding bearing supports, the beating swing shaft (2) has 2(I-2) reed seat supports, the I-1 fixed support points are simplified as spring constraints in X and Y directions, the reed, the reed support and the counterweight rod are simplified as concentrated forces, and the swing shaft is simplified as a beam, to obtain the mechanical model diagram of the force of the beating swing shaft (2) under different typical working conditions; According to the obtained mechanical model diagram of the force of the beating swing shaft (2), the force of the I-1 supports is analyzed, and the optimal installation point of each reed seat support (1) is solved by taking the minimum force change of each support point and the minimum mean square error of the force between the I-1 supports as the target. According to the optimal installation point of each reed seat support (1) and M i配重棒 , the length and diameter of each counterweight rod are confirmed, and the beating-up swing shaft three-dimensional model is adjusted according to the obtained length and diameter of each counterweight rod, to obtain an installation optimization structure of the reed seat support on the swing shaft.

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