Staggered step reinforced positioning bearing seat for carding machine

Abstract

The staggered step reinforced positioning bearing seat for the carding machine comprises a step-shaped body which is sequentially provided with a first layer, a second layer and a third layer from bottom to top, the third layer is arranged to be in an inverted-T shape, an axial sliding groove is formed between a left side protrusion of the third layer and a second step, and a positioning structure is formed between a right side protrusion of the third layer and the right side wall face; a bearing mounting hole is further formed in the step-shaped body; the multiple steps and the inverted-T-shaped structure form a unique'step-boss' outline, in the actual use process, the bearing seat can only be embedded into a corresponding installation groove of a rack of the carding machine in the unique direction, and installation direction errors can be effectively avoided; meanwhile, the sectional inertia moment of the body is increased through the three-dimensional step structure, the overall rigidity of the bearing seat is improved, and therefore bending stress generated by high-speed vibration of a shaft system is effectively resisted.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bearing seat, and particularly relates to a misaligned stepped reinforced positioning bearing seat for a carding machine. BACKGROUND

[0002] As a core equipment of cotton spinning processing, the shafting (such as a licker-in shaft and a cylinder shaft) of a carding machine needs to complete fiber carding work under high-speed rotation, and vibration load generated thereby is easy to cause bearing seat loosening, positioning deviation and even structural fatigue failure.

[0003] The existing bearing seat of a carding machine mostly adopts a planar lamination or a simple stepped structure. The traditional planar mounting mode relies on bolt single-point positioning, and has insufficient anti-vibration capacity. When running at high speed, the shafting coaxiality deviation is easy to be caused due to bolt loosening, which affects carding precision and aggravates equipment wear. The single stepped structure is difficult to realize multi-directional constraint, and is easy to cause assembly error due to direction misjudgment during installation. In addition, the overall rigidity is limited, and the alternating stress caused by shafting vibration cannot be effectively resisted. Moreover, the installation and positioning of the traditional bearing seat rely on manual calibration, which is low in efficiency and difficult to adapt to the development demand of carding machine modularization and high speed.

[0004] In view of the above problems, the existing technology attempts to increase reinforcing ribs or complex positioning bosses to improve stability, but the complex structure not only increases processing cost, but also may cause new failure points due to stress concentration. SUMMARY

[0005] The present application aims to overcome the deficiencies in the prior art, and provides a misaligned stepped reinforced positioning bearing seat for a carding machine.

[0006] The application provides a staggered step reinforced positioning bearing seat for a carding machine, which comprises a stepped body, from bottom to top, in turn, a first layer, a second layer and a third layer; the left and right sides and the back of the first layer and the second layer are flush, and the front forms a first step; the upper surface of the second layer is provided with a second step, and the second step is located on the left side; the third layer is provided in the shape of an inverted convex character, and the middle part of the third layer is provided on the second layer; the left side of the third layer is provided with a convex part opposite to the second step, and an axial sliding groove is formed between the two, which is used for inserting and assembling a positioning shaft system assembly to adapt to the frequent maintenance requirements of the carding machine; the right side of the third layer protrudes compared with the first layer and the second layer, and the horizontal step surface of the right side of the third layer is perpendicular to the right side wall surface of the first layer and the second layer, and a reverse step-shaped positioning structure is formed between the two, which is used for positioning and installing with the side plate of the carding machine; the stepped body is also provided with a bearing mounting hole, which extends along the up-down direction and penetrates through the first layer, the second layer and the third layer, and is used for fixing the bearing of the transmission shaft of the carding machine to support the transmission shaft of the carding machine; the multi-step form of the stepped body and the inverted convex character form of the third layer can realize error-proof connection with the rack of the carding machine, which is beneficial to enhancing the overall rigidity of the bearing seat to resist the high-speed vibration load of the shaft system of the carding machine.

[0007] Further, the bearing mounting hole is provided in a three-section structure, from top to bottom, in turn, a first section, a second section and a third section, the hole diameter of the first section is larger than that of the second section, and the hole diameter of the second section is larger than that of the third section; a first limiting step is formed between the first section and the second section; a second limiting step is formed between the second section and the third section; the first section and the second section are respectively used for mounting an angular contact bearing, and the first limiting step and the second limiting step are used for limiting the position of the angular contact bearing; the two groups of angular contact bearings cooperate to play a pre-tightening and clearance elimination role, which is beneficial to improving the stability of the transmission shaft.

[0008] Further, an annular clamping groove is arranged on the inner wall of the first section, which is used for mounting a sealing element.

[0009] Further, a limiting channel is arranged between the first section and the second section, which is used for mounting a bearing limiting ring.

[0010] Further, a communication hole is arranged on the back of the stepped body, which is used for introducing airflow to blow away the fiber dust entering the bearing area.

[0011] Further, three through holes are arranged on the first step, which extend along the up-down direction and penetrate through the first layer; the through holes can reduce the weight of the bearing seat and can also cooperate with the positioning pin for point positioning when needed; the three through holes are distributed in the left-right direction, one of which is arranged on the left side, and the other two are arranged on the right side, the hole diameter of the through hole arranged in the middle is smaller than that of the other two through holes, so as to adapt to the adjustment requirements in the installation process.

[0012] Furthermore, the upper surface of the third layer is provided with three threaded holes, which are evenly spaced along the inclined direction to accommodate the inclined installation requirements of the carding machine frame. During installation, the positioning structure fits into the side plate of the carding machine, and the bearing seat can be positioned and installed on the top plate of the carding machine frame by passing bolts through the threaded holes.

[0013] Furthermore, the diameter of the threaded hole in the middle is larger than that of the other two threaded holes, which helps to enhance the connection strength of key stress points.

[0014] Furthermore, two connecting screw holes are provided on the left side wall of the first and second layers, which are flush with each other. The two connecting screw holes are distributed at intervals along the front-back direction. During installation, the positioning structure fits against the side plate of the carding machine. By passing bolts through the connecting screw holes, the bearing seat can be positioned and installed on the right side of the carding machine frame.

[0015] Furthermore, the bottom surface of the stepped body is provided with a fixing screw hole, which is located on one side of the bearing mounting hole and is used to install the bottom support bolt so as to connect the bearing seat to the bottom guide rail or support seat of the carding machine frame.

[0016] This application provides a staggered stepped reinforced positioning bearing seat for a carding machine, comprising a stepped body, consisting of a first layer, a second layer, and a third layer from bottom to top. The third layer is shaped like an inverted U-shape. An axial groove is formed between the left protrusion of the third layer and the second step, and a positioning structure is formed between the right protrusion of the third layer and the right side wall. The stepped body is also provided with bearing mounting holes. The multi-step structure and the inverted U-shape form a unique "step-protrusion" profile. In actual use, the bearing seat can only be inserted into the corresponding mounting groove of the carding machine frame in a single direction, which can effectively avoid incorrect installation direction. At the same time, the three-dimensional stepped structure increases the moment of inertia of the body section, which helps to improve the overall rigidity of the bearing seat, thereby effectively resisting the bending stress generated by high-speed vibration of the shaft system. Attached Figure Description

[0017] Figure 1 This application provides a structural schematic diagram of a staggered step reinforced positioning bearing seat for a carding machine;

[0018] Figure 2 for Figure 1 The diagram shows a structural schematic of the carding machine using a staggered stepped reinforced positioning bearing seat at another angle.

[0019] Figure 3 for Figure 1 The diagram shows a structural schematic of the carding machine using a staggered stepped reinforced positioning bearing seat at another angle.

[0020] Figure 4 for Figure 1The structure sectional view of the dislocation step reinforced positioning bearing seat of the carding machine is shown. DETAILED DESCRIPTION

[0021] In order to make the above objectives, characteristics and advantages of the present application more apparent, a detailed description of the specific embodiments of the present application will be given below with reference to the accompanying drawings. In the following description, a large number of specific details are set forth in order to provide a sufficient understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0022] The present application provides a dislocation step reinforced positioning bearing seat of a carding machine, comprising a stepped body, from bottom to top, in turn, first layer 1, second layer 2 and third layer 3; the left and right sides and the back of the first layer 1 and the second layer 2 are flush, and the front forms a first step 101; the upper surface of the second layer 2 is provided with a low second step 201, and the second step 201 is located on the left side; the third layer 3 is arranged in an inverted convex character shape, and the middle part of the third layer 3 is provided on the second layer 2; the left side of the third layer 3 is convex and opposite to the second step 201, and an axial sliding groove 4 is formed therebetween, which is used for inserting and assembling a positioning shaft system component, so as to adapt to the frequent maintenance requirements of the carding machine; the right side of the third layer 3 is convex and protrudes compared with the first layer 1 and the second layer 2, and the horizontal step surface 301 of the right side is perpendicular to the right side wall surface B of the first layer 1 and the second layer 2, and an inverted step-shaped positioning structure is formed therebetween, which is used for positioning and installing with the side plate of the carding machine; the stepped body is also provided with a bearing mounting hole 5, which extends along the up-down direction and penetrates the first layer 1, the second layer 2 and the third layer 3, and is used for fixing the transmission shaft bearing of the carding machine, so as to support the transmission shaft of the carding machine.

[0023] The multi-step form of the stepped body and the inverted convex character form of the third layer 3 can realize error-proof connection with the carding machine rack, which is beneficial to enhance the overall rigidity of the bearing seat, so as to resist the high-speed vibration load of the shaft system of the carding machine.

[0024] Specifically refer to Figures 1 to 4 In the illustrated embodiment, the bearing seat is roughly in a three-layer stepped structure, comprising the first layer 1, the second layer 2 and the third layer 3 arranged from bottom to top.

[0025] The left and right sides and the back of the first layer 1 and the second layer 2 are flush, and the front forms a first step 101, and the height difference of the first step 101 can be adapted to the front end mounting surface of the carding machine rack, providing a horizontal positioning reference.

[0026] The left side of the upper surface of the second layer 2 is provided with a low second step 201, which is usually 2-5 mm high, for cooperating with the left protrusion of the third layer 3 to form the upper and lower groove walls of the axial sliding groove 4.

[0027] It should be noted that the second step 201 can be understood as Figure 1 the horizontal plane between the two steps with height difference.

[0028] The third layer 3 is arranged in an asymmetric inverted protrusion shape, with the middle protrusion fixed to the upper surface of the second layer 2, and the left protrusion opposite to the second step 201, forming the axial sliding groove 4 therebetween. The axial sliding groove 4 is used to fit the positioning sleeve or sliding component of the shaft system of the carding machine, allowing the shaft system assembly to be inserted or pulled out in the axial direction, facilitating quick disassembly and assembly during maintenance.

[0029] The right protrusion of the third layer 3 protrudes to the right compared to the first layer 1 and the second layer 2. In combination with the description of Figure 3 , the horizontal step surface 301 at the bottom of the right protrusion of the third layer 3 is perpendicular to the right side wall surface B, forming an inwardly recessed inverted step-shaped positioning structure. During installation, the horizontal step surface 301 is in contact with the horizontal installation surface of the side plate of the carding machine, and the right side wall surface B is in contact with the vertical surface of the side plate, which can realize two-dimensional positioning through surface contact and bolt fixation (details will be described below), avoiding the risk of deviation of traditional single-point positioning.

[0030] The bearing mounting hole 5 is arranged in the middle of the stepped body and penetrates the three-layer body in the up-down direction. In combination with the description of Figure 4 , the axis of the bearing mounting hole 5 is perpendicular to each layer, used to fix the transmission shaft bearing.

[0031] The multi-step and inverted protrusion structure form a unique "step-protrusion" profile. In actual use, the bearing seat can only be embedded in the corresponding installation groove of the carding machine frame in a unique direction, effectively avoiding incorrect installation direction. At the same time, the three-dimensional stepped structure increases the cross-sectional moment of inertia of the body, which is beneficial to improve the overall rigidity compared to the planar structure, thereby effectively resisting the bending stress generated by high-speed vibration of the shaft system.

[0032] Optionally, the bearing mounting hole 5 is arranged in a three-section structure, from top to bottom, in order of the first section, the second section, and the third section, the hole diameter of the first section is larger than that of the second section, and the hole diameter of the second section is larger than that of the third section; the first section and the second section form a first limiting step 501; the second section and the third section form a second limiting step 502; the first section and the second section are respectively used to install an angular contact bearing, and the first limiting step 501 and the second limiting step 502 are used to limit the position of the angular contact bearing; the two sets of angular contact bearings cooperate to pre-tighten and eliminate backlash, which is beneficial to improve the stability of the transmission shaft.

[0033] For details, please refer to Figure 4In the illustrated embodiment, the bearing mounting hole 5 is divided into a first section, a second section, and a third section, with the hole diameter decreasing from top to bottom (for example, φ50mm for the first section, φ40mm for the second section, and φ35mm for the third section). A first limiting step 501 is formed between the first section and the second section, with a step face width of 3-5mm. A second limiting step 502 is formed between the second section and the third section, with a step face width of 0.5-1mm.

[0034] The first section is used for mounting a first angular contact bearing, with the outer ring of the first angular contact bearing being limited by the first limiting step 501 (the step face is in contact with the end face of the bearing outer ring), and the inner ring being in contact with the shaft shoulder of the transmission shaft.

[0035] The second section is used for mounting a second angular contact bearing, with the outer ring of the second angular contact bearing being limited by the second limiting step 502 (the step face is in contact with the end face of the bearing outer ring), and the inner ring being fixed to the transmission shaft by a bearing limiting ring.

[0036] Since the hole diameter of the first section is larger than that of the second section (for example, φ50mm→φ40mm), a step difference is formed, which can ensure accurate axial positioning of the outer rings of the two sets of angular contact bearings. At the same time, the shaft shoulder diameter and the bearing inner ring hole diameter are in interference fit (for example, H7 / k6 tolerance), which can ensure synchronous transmission during rotation.

[0037] Angular contact bearings can simultaneously bear radial loads (such as the weight of the transmission shaft and the resistance of fiber carding) and axial loads (such as the axial thrust of the carding machine shaft system). The contact angle (usually 15-40°) determines the proportion of load bearing. By setting two sets of angular contact bearings, the first angular contact bearing mainly bears the upward axial load of the shaft system (such as the upward thrust generated when the licker-in roller shaft rotates at high speed), and the second angular contact bearing mainly bears the downward axial load of the shaft system (such as the downward pressure generated by the gravity or fiber accumulation of the cylinder shaft).

[0038] The two sets of angular contact bearings are installed in a back-to-back manner (with the wide edges of the outer rings facing each other), forming a "rigid support pair". The radial load is shared by the two sets of angular contact bearings, which is beneficial to reduce the load of individual bearings. The axial load is transmitted through the internal force of the bearings, forming a pre-tightening force between the two sets of bearings. Figure 4 As shown, the spacing between the first limiting step 501 and the second limiting step 502 determines the pre-tightening degree of the bearings. By accurately controlling the step spacing (such as a tolerance of ±0.02mm), a preset pre-tightening force (such as 50-100N) can be achieved, which can offset the shaft system play and control the radial run-out error of the transmission shaft within 0.03mm, thereby improving the stability of the shaft system.

[0039] Optionally, an annular clamping groove 503 is provided on the inner wall of the first section, and the annular clamping groove 503 is used for mounting a sealing element.

[0040] For specific details, please refer to Figure 4In the illustrated embodiment, the inner wall of the first section of the highest bit is provided with a ring-shaped clamping groove 503, the depth of the clamping groove is 2-3mm, and the width is 5-8mm, which is used to embed the rubber sealing ring or the labyrinth seal. The sealing element can prevent the leakage of fiber dust and lubricating oil in the carding machine to the outside, while preventing foreign matter from entering the bearing area, thereby effectively prolonging the service life of the bearing.

[0041] Optionally, a limiting channel 504 is provided between the first section and the second section, and the limiting channel is used to install a bearing limiting ring.

[0042] For details, please refer to Figure 4 In the illustrated embodiment, a limiting channel 504 is provided between the first section and the second section, and the length of the limiting channel 504 is 2-5mm, which is used to install an elastic retainer ring or a shaft limiting ring. The limiting ring is clamped into the channel, which can limit the axial movement of the inner ring of the bearing, and form a two-way constraint with the stepped surface to avoid the bearing from moving when rotating at high speed (especially suitable for the scene of the licker-in roller shaft with large axial load). The rigid constraint of the limiting ring and the stepped surface can also prevent the bearing from moving under alternating load, and avoid the failure of lubricating grease due to friction heating.

[0043] In actual use, the design of the axial sliding groove 4 allows the shafting to be quickly disassembled and assembled, and the positioning function of the bearing limiting ring can avoid the need to re-adjust the bearing pre-tightening force during maintenance, thereby effectively reducing the time of single maintenance.

[0044] In a specific embodiment, the limiting channel 504 is located between the two groups of angular contact bearings, and the limiting channel 504 is provided with a bearing limiting ring, which is a ring-shaped metal piece (such as an elastic retainer ring or a shaft ring), which can clamp the inner ring of the bearing after being embedded in the limiting channel 504. The carding machine shafting (such as the licker-in roller shaft) will produce axial movement when rotating at high speed (such as axial load fluctuation caused by changes in fiber carding resistance), and the bearing limiting ring can control the axial movement of the shafting within 0.03mm by blocking the axial displacement of the inner ring of the bearing. The bearing limiting ring cooperates with the first limiting step 501 and the second limiting step 502 to form a two-way limiting of the outer ring and the inner ring of the bearing, which can ensure that the shafting maintains a fixed axial position during the operation of the carding machine, and avoid the decrease of carding accuracy or abnormal sound of the equipment caused by the movement.

[0045] The bearing limiting ring has four functions of axial positioning, pre-tightening assistance, installation guidance, and anti-vibration overload, and cooperates with the angular contact bearing and the stepped surface to form a shafting stable support system, which is an important component to solve the problems of axial movement and vibration aggravation of the carding machine shafting when rotating at high speed.

[0046] Optionally, the back surface C of the stepped body is provided with a communication hole 6, and the communication hole 6 is used to introduce airflow to blow away the fiber dust entering the bearing area.

[0047] For details, please refer toFigure 3 and Figure 4 In the illustrated embodiment, the back surface C of the stepped body is provided with a communication hole 6 having a diameter of 8-12 mm, one end of which communicates with the second section of the bearing mounting hole 5, and the other end of which is connected with a compressed air pipeline. When the shaft system is in operation, the air flow introduced can form a directional blowing force to discharge the fiber dust entering the bearing area, preventing the accumulation of dust from causing the bearing to be stuck.

[0048] In actual use, the communication hole 6 cooperates with the sealing element, and the two work together. While the sealing element blocks external dust, the communication hole 6 blows away the dust inside the bearing area through the air flow, forming a double dust prevention system of external sealing and internal discharge, ensuring that the angular contact bearing operates in a clean environment and maintains stable pre-tightening force.

[0049] Optionally, three through holes 102 are arranged on the first step 101, the through holes 102 extend in the up-down direction and penetrate the first layer 1; the through holes 102 can reduce the weight of the bearing seat and can be used for positioning with a positioning pin when needed; the three through holes 102 are spaced apart in the left-right direction, one of the through holes 102 is arranged on the left, and the other two through holes 102 are arranged on the right, the diameter of the through hole 102 arranged in the middle is smaller than that of the other two through holes 102, so as to facilitate the adjustment requirement in the installation process.

[0050] For details, please refer to Figure 2 In the illustrated embodiment, three through holes 102 are arranged on the first step 101, the through holes 102 extend in the up-down direction and penetrate the first layer 1. The arrangement of the through holes 102 can reduce the weight of the bearing seat, thereby reducing the inertia of the bearing seat. In actual use, the middle through hole can be inserted into a positioning pin and cooperates with a positioning hole of the carding machine frame to realize initial positioning during installation. The two side middle through holes are used for passing M10 bolts to connect with the bottom of the frame, and the large diameter allows the bolts to be adjusted within a range of ±2 mm, which is conducive to adapting to the assembly tolerance of the frame.

[0051] Specifically, the diameter of the middle through hole is 8 mm, and the diameter of the two side through holes is 12 mm.

[0052] The middle through hole is used for installing a positioning pin or a small-specification bolt, and the main function is accurate positioning, which limits the displacement of the bearing seat in the horizontal direction (left-right or front-back), and ensures the installation accuracy of the bearing seat and the carding machine frame or adjacent components. The small diameter design can reduce the weakening of the structural strength of the first layer 1, and avoid making this area a weak force point due to the large diameter.

[0053] The two side through holes are used for mounting bearing bolts or adjusting bolts, and the large hole diameter can be matched with larger diameter bolts or spring washers. The main function is to provide mechanical connection strength to bear the shear force or axial load of the bearing seat during operation. The large hole diameter matches the high-strength bolt, which can disperse the vibration, rotation torque and other loads received by the bearing seat to a larger area of the rack, reducing the local stress.

[0054] During installation, the position of the bearing seat can be fixed by the positioning pin of the middle through hole first, and then fastened by the large hole diameter bolts on both sides to avoid positioning deviation caused by bolt pre-tightening force. The larger hole diameter also allows the bolt to be slightly adjusted within a certain range to adapt to the tolerance accumulation problem during the assembly of the cotton carding machine rack, improving the installation compatibility.

[0055] Optionally, the upper surface of the third layer 3 is provided with three threaded holes 302, which are equally spaced along the inclined direction to adapt to the requirement of inclined installation of the cotton carding machine rack; during installation, the positioning structure is attached to the side plate of the cotton carding machine, and the bolt passes through the threaded hole 302 to realize the positioning and installation of the bearing seat and the top plate of the cotton carding machine rack.

[0056] Optionally, the hole diameter of the middle threaded hole 302 is larger than that of the other two threaded holes 302, which is beneficial to enhance the connection strength of the key stress point.

[0057] For details, please refer to Figure 2 In the illustrated embodiment, the upper surface of the third layer 3 is provided with three threaded holes 302, which are equally spaced along a slant line, and the direction of the slant line is 15-30° with respect to the front and rear directions. The distance between any two adjacent threaded holes 302 is 10-35 mm.

[0058] When the top plate of the cotton carding machine rack is an inclined structure (such as the doffer shaft area), the inclined threaded holes 302 can be directly aligned with the rack screw holes, avoiding the trouble of additional machining of inclined washers for traditional horizontal holes, which helps to improve the installation efficiency.

[0059] Specifically, the hole diameter of the middle threaded hole is M12, and the hole diameter of the two side threaded holes is M10. The middle threaded hole is used for mounting a high-strength bolt to bear the main torque transmitted by the shaft system, and the two side threaded holes are used for auxiliary fixation to improve the connection reliability of the key stress point.

[0060] Optionally, two connecting screw holes 103 are arranged on the left side wall surface A of the first layer 1 and the second layer 2, which are spaced apart along the front and rear directions; during installation, the positioning structure is attached to the side plate of the cotton carding machine, and the bolt passes through the connecting screw hole 103 to realize the positioning and installation of the bearing seat and the right side of the cotton carding machine rack.

[0061] For details, please refer to Figure 1In the illustrated embodiment, the first layer 1 and the left side wall surface A of the second layer 2 are provided with two connecting screw holes 103, which are distributed along the front-rear direction with a spacing of 50 mm, and the connecting screw holes 103 have a hole diameter of M8-M10.

[0062] During installation, the positioning structure on the right side of the bearing seat is attached to the side plate of the carding machine frame, and the left side is fixed to the left side support member of the frame through the bolt passing through the connecting screw hole 103, forming a "left pull and right resist" bidirectional constraint to prevent the bearing seat from shaking left and right and reduce the transverse displacement of the bearing seat.

[0063] Optionally, the bottom surface D of the stepped body is provided with a fixed screw hole 104 located on one side of the bearing mounting hole 5, which is used to install a bottom support bolt to connect the bearing seat with the bottom rail or support seat of the carding machine frame.

[0064] For details, please refer to Figure 3 In the illustrated embodiment, the bottom surface D is provided with a fixed screw hole 104 located between the bearing mounting hole 5 and the through hole 102. The fixed screw hole 104 has a hole diameter of M10 and a depth of 20-25 mm.

[0065] By installing an M10 bolt through the fixed screw hole 104, the bearing seat is connected with the rail at the bottom of the frame, forming a "top-side-bottom" three-dimensional fixed system. Especially when the shaft system has a large vertical load (such as the cylinder shaft), the bottom bolt can share about 25% of the radial load, reducing the risk of stress concentration around the bearing mounting hole.

[0066] The dislocation stepped reinforced positioning bearing seat for a carding machine provided in the present application solves the problems of insufficient anti-vibration ability of the traditional bearing seat and easy installation errors through a three-dimensional stepped positioning structure and multi-directional fixation design. Its unique profile only supports one-way installation, avoiding manual calibration errors and shortening the assembly time. At the same time, the overall rigidity of the bearing seat is improved, and the vibration amplitude is reduced, making it more suitable for high-speed scenarios with a shaft system rotating at a speed of ≥1200 r / min. The axial sliding groove 4 supports quick disassembly and assembly of the shaft system, the communication hole 6 can reduce the frequency of dust maintenance, and the inclined threaded hole and the differential hole diameter design are more suitable for the frame structure and facilitate accurate installation.

[0067] The above embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as limiting the scope of the patent application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of protection of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A staggered step reinforced positioning bearing seat for a carding machine, characterized in that, It includes a stepped body, which, from bottom to top, consists of the first layer (1), the second layer (2), and the third layer (3). The first layer (1) is flush with the left and right sides and the back of the second layer (2), forming a first step (101) on the front. The upper surface of the second layer (2) is provided with a second step (201), which is located on the left side; The third layer (3) is arranged in an inverted convex shape, and the middle part of the third layer (3) is protruding on the second layer (2); The left side protrusion of the third layer (3) is opposite to the second step (201), and an axial groove (4) is formed between them. The axial groove (4) is used to insert the positioning shaft assembly in order to meet the needs of frequent maintenance of the carding machine. The right side protrusion of the third layer (3) protrudes more than the first layer (1) and the second layer (2). The horizontal step surface (301) of the right side protrusion is perpendicular to the right side wall surface (B) of the first layer (1) and the second layer (2), forming an inverted step-shaped positioning structure between them. The positioning structure is used for positioning and installation with the side plate of the carding machine. The stepped body is also provided with bearing mounting holes (5), which extend in the vertical direction and penetrate the first layer (1), the second layer (2) and the third layer (3). The bearing mounting holes (5) are used to fix the drive shaft bearing of the carding machine so as to support the drive shaft of the carding machine. The multi-step form of the stepped body, combined with the inverted convex form of the third layer (3), can achieve anti-misalignment connection with the carding machine frame, which is conducive to enhancing the overall rigidity of the bearing seat, so that the bearing seat can resist the high-speed vibration load of the carding machine shaft system.

2. The carding machine staggered step reinforced positioning bearing seat according to claim 1, characterized in that, The bearing mounting hole (5) is configured as a three-section structure, from top to bottom as the first section, the second section and the third section, the diameter of the first section is larger than the diameter of the second section, and the diameter of the second section is larger than the diameter of the third section; A first limiting step (501) is formed between the first segment and the second segment; A second limiting step (502) is formed between the second segment and the third segment; The first segment and the second segment are respectively used to install an angular contact bearing, and the first limiting step (501) and the second limiting step (502) are used to define the position of the angular contact bearing; The two sets of angular contact bearings work together to preload and eliminate backlash, which helps improve the stability of the drive shaft.

3. The carding machine staggered step reinforced positioning bearing seat according to claim 2, characterized in that, The inner wall of the first section is provided with a ring groove (503), which is used to install sealing elements.

4. The carding machine staggered step reinforced positioning bearing seat according to claim 2, characterized in that, A limiting channel (504) is provided between the first segment and the second segment, and the limiting channel is used to install the bearing limiting ring.

5. The carding machine staggered step reinforced positioning bearing seat according to claim 2, wherein the back side (C) of the stepped body is provided with a connecting hole (6), the connecting hole (6) is used to introduce airflow to blow away fiber dust entering the bearing area.

6. The carding machine staggered step reinforced positioning bearing seat according to claim 1, characterized in that, The first step (101) is provided with three through holes (102), which extend in the vertical direction and penetrate the first layer (1); The through hole (102) can reduce the weight of the bearing housing and can also be used for fixed positioning when needed with the locating pin; The three through holes (102) are spaced apart in the left and right direction. One of the through holes (102) is located on the left and the other two through holes (102) are located on the right. The diameter of the through hole (102) located in the middle is smaller than the diameter of the other two through holes (102) in order to accommodate the adjustment needs during the installation process.

7. The carding machine staggered step reinforced positioning bearing seat according to claim 1, characterized in that, The upper surface of the third layer (3) is provided with three threaded holes (302), which are evenly spaced along the inclined direction to meet the needs of the carding machine frame for inclined installation. During installation, the positioning structure fits against the side plate of the carding machine, and the bearing seat can be positioned and installed on the top plate of the carding machine frame by passing bolts through the threaded holes (302).

8. The carding machine staggered step reinforced positioning bearing seat according to claim 7, characterized in that, The diameter of one of the threaded holes (302) located in the middle is larger than the diameter of the other two threaded holes (302), which helps to enhance the connection strength of key stress points.

9. The carding machine staggered step reinforced positioning bearing seat according to claim 1, characterized in that, Two connecting screw holes (103) are provided on the left side wall (A) flush with the first layer (1) and the second layer (2), and the two connecting screw holes (103) are distributed at intervals along the front-back direction; During installation, the positioning structure fits against the side plate of the carding machine, and the bearing seat can be positioned and installed on the right side of the carding machine frame by passing bolts through the connecting screw holes (103).

10. The carding machine staggered step reinforced positioning bearing seat according to claim 1, characterized in that, The bottom surface (D) of the stepped body is provided with a fixing screw hole (104), which is located on one side of the bearing mounting hole (5) and is used to install bottom support bolts so as to connect the bearing seat to the bottom guide rail or support seat of the carding machine frame.

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