Channel type workpiece surface treatment system with multi-angle arrangement of impeller heads and working method

Abstract

The channel type workpiece surface treatment system comprises a front-back through shell wall unit, and the shot blasting devices are installed on the upper wall body, the lower wall body, the left wall body and the right wall body of the shell wall unit; the shell wall units are mutually spliced and communicated in the front-back direction to form a channel type shot blasting system, and a shot blasting process assembly line channel is formed in the channel type shot blasting system; a left workpiece driver and a right workpiece driver are arranged on the inner side of each shell wall unit in a bilateral symmetry mode. A plurality of left workpiece drivers in the shot blasting process assembly line channel form a left workpiece driver array; a plurality of right workpiece drivers in the shot blasting process assembly line channel form a right workpiece driver array; the I-shaped steel beam shuttles back and forth in the extending direction of the shot blasting process assembly line channel under the common lifting and driving of the left workpiece driver array and the right workpiece driver array; and the shot blasting treatment effect of the inner surface of the workpiece can be actively improved in the continuous conveying process of the workpiece.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of shot blasting process. BACKGROUND

[0002] The existing channel type or roller bed through type shot blasting cleaning system has the following defects when processing long strip steel structural members with concave surfaces such as I-beams and H-beams:

[0003] When the workpiece passes through the horizontal roller bed at a uniform speed, the inner surfaces of its upper and lower flanges are always in a horizontal state. On the one hand, this causes them to be blocked by their own flanges and unable to receive direct projection from the upper and lower shot blasters; on the other hand, the plane is nearly parallel to the direction of the projection flow of the left and right shot blasters, the impact angle of the pellets is extremely poor, and the cleaning effect is weak.

[0004] To improve this problem, the existing technology usually uses the method of increasing the number of shot blasters or increasing the shot blasting power. However, this not only greatly increases the energy consumption and equipment cost, but also may cause "over-throwing" to the outer surface of the workpiece, and still cannot fundamentally solve the problem of insufficient shot blasting coverage and cleaning intensity caused by poor angle of the inner surface.

[0005] The above problems lead to uneven and insufficient treatment of the key stress surface of the workpiece, which seriously affects the adhesion of subsequent coating and the fatigue resistance and service life of the steel structural member.

[0006] Therefore, a high-efficiency and low-consumption solution is needed that can actively improve the shot blasting treatment effect of the inner surface of the workpiece during continuous conveying. SUMMARY

[0007] The purpose of the present application is to overcome the deficiencies in the prior art, and to provide a channel type workpiece surface treatment system with multi-angle arrangement of shot blasters and a working method, which can actively improve the shot blasting treatment effect of the inner surface of the workpiece during continuous conveying.

[0008] Technical solution: To achieve the above purpose, the channel type workpiece surface treatment system with multi-angle arrangement of shot blasters of the present application comprises a front-to-back through shell wall unit, and shot blasters are installed on the upper and lower and left and right wall bodies of the shell wall unit; a plurality of shell wall units are connected in series along the front-to-back direction to form a channel type shot blasting system, and a shot blasting process flow line channel is formed in the channel type shot blasting system; the inner side of each shell wall unit is symmetrically provided with a left workpiece driver and a right workpiece driver; a plurality of left workpiece drivers in the shot blasting process flow line channel form a left workpiece driver array; a plurality of right workpiece drivers in the shot blasting process flow line channel form a right workpiece driver array; an I-beam is driven to shuttle along the extension direction of the shot blasting process flow line channel under the joint lifting of the left workpiece driver array and the right workpiece driver array.

[0009] Further, the lower surface of the upper transverse wall of the I-beam is divided into a left lower surface and a right lower surface; the upper surface of the lower transverse wall of the I-beam is divided into a left upper surface and a right upper surface; when the I-beam is at any position in the channel of the shot blasting process flow line, at least three groups of left workpiece drivers jointly lift the left lower surface of the upper transverse wall of the I-beam upward, and at least three groups of right workpiece drivers jointly lift the right lower surface of the upper transverse wall of the I-beam upward.

[0010] Further, the left workpiece driver and the right workpiece driver are left-right symmetrical structures; the left workpiece driver / right workpiece driver comprises a vertical through protective shell, a rotating shaft is arranged at the upper part of the protective shell; the rotating shaft is rotatably installed on the bearing seat on the protective shell through the bearing; the power device is coaxially drivenly connected to the rotating shaft through the output shaft; the rotating shaft is integrally provided with two wheel discs at intervals; the outer edge of one of the two wheel discs close to the output shaft is provided with an annular wheel disc limiting outer edge; a rotating ring is coaxially transmission-fitted outside the section of the rotating shaft between the two wheel discs, and the outer diameter of the rotating ring is smaller than the outer diameter of the two wheel discs.

[0011] When the active clutch is locked, the rotating ring is synchronous with the rotating shaft, and when the active clutch is disengaged, the rotating ring can freely rotate relative to the rotating shaft; a winding drum is arranged below the rotating ring, a metal woven belt winding body is wound on the winding drum, and the metal woven belt ends drawn upward are fixedly connected to the outer circumferential surface of the rotating ring; the inner circle of the winding drum is coaxially transmission-force-fitted with a fixed shaft through a winding spring unit, and the two ends of the fixed shaft are fixed on the protective shell; the winding spring unit applies a torsion to the winding drum, so that the winding drum always has a winding tendency, and thus the metal woven belt drawn upward by the metal woven belt winding body is always in a taut state.

[0012] Further, when the I-beam is in the channel of the shot blasting process flow line, the left lower surface of the upper transverse wall of the I-beam is rolled by the two wheel discs on the left workpiece drivers; and the right lower surface of the upper transverse wall of the I-beam is rolled by the two wheel discs on the right workpiece drivers.

[0013] Further, when the I-beam is in the channel of the shot blasting process flow line, the upper transverse wall of the I-beam is constrained between the annular wheel disc limiting outer edge of the left workpiece driver and the annular wheel disc limiting outer edge of the right workpiece driver.

[0014] Further, in step one, the active clutches on all left workpiece drivers are controlled to enter the locked state, while the active clutches on all right workpiece drivers remain disengaged; then the rotation shafts on the left workpiece drivers and the right workpiece drivers are synchronously controlled to rotate forward, and the I-beam gradually moves forward along the shot blasting process pipeline channel under the common rolling rotation of the wheels on the left workpiece drivers and the wheels on the right workpiece drivers; until the outer diameter of the rotating ring sleeve on the left workpiece driver gradually increases to exceed the wheel; then the rotation shafts on the left workpiece drivers and the right workpiece drivers are synchronously controlled to rotate reversely, and the I-beam gradually moves backward along the shot blasting process pipeline channel to retreat to the initial position of this step, and the spring winding unit on the left workpiece driver adaptively winds the metal woven belt drawn out to restore the outer diameter of the rotating ring sleeve on the left workpiece driver to be less than the outer diameter of the wheel.

[0015] In step two, the active clutches on all left workpiece drivers are controlled to enter the disengaged state, while the active clutches on all right workpiece drivers remain locked; then the rotation shafts on the left workpiece drivers and the right workpiece drivers are synchronously controlled to rotate forward, and the I-beam gradually moves forward along the shot blasting process pipeline channel under the common rolling rotation of the wheels on the left workpiece drivers and the wheels on the right workpiece drivers; until the outer diameter of the rotating ring sleeve on the right workpiece driver gradually increases to exceed the wheel.

[0016] Then the rotation shafts on the left workpiece drivers and the right workpiece drivers are synchronously controlled to rotate reversely, and the I-beam gradually moves backward along the shot blasting process pipeline channel to retreat to the initial position of this step, and the spring winding unit on the right workpiece driver adaptively winds the metal woven belt drawn out to restore the outer diameter of the rotating ring sleeve on the right workpiece driver to be less than the outer diameter of the wheel.

[0017] In step three, the active clutches on the left workpiece drivers and the right workpiece drivers are controlled to enter the disengaged state, and then the rotation shafts on the left workpiece drivers and the right workpiece drivers are synchronously controlled to rotate forward, and the I-beam gradually moves forward along the shot blasting process pipeline channel by L and then pauses.

[0018] Further, the process of “step one” to “step three” is continuously cycled until the I-beam completely shuttles through the shot blasting process pipeline channel.

[0019] Beneficial effects: This scheme discards the traditional passive support roller and creatively arranges left and right workpiece driver arrays in the shot blasting channel in left-right symmetry. Each driver integrates driving, supporting and lifting functions, the wheel is responsible for driving and bearing, and the unique radially telescopic mechanism realizes local jacking.

[0020] A three-step working method of "left tilt-reverse, right tilt-reverse, horizontal advance" was proposed. By independently controlling the clutch state of the left and right drive and the direction of the motor through the program, the workpiece is periodically and alternately tilted to the left and right at a small angle during the forward movement. After the workpiece is tilted, the inner surface of its upper and lower transverse walls changes from parallel to the lateral shot flow to have an advantageous angle, which greatly improves the impact effect of the shot.

[0021] Periodic left and right tilting ensures that both sides of the workpiece's inner surface are effectively covered by the shot blasting unit on the opposite side, eliminating the "shadow area" found in traditional methods. By advancing with a small step L and reciprocating tilting, it ensures that the inner and outer surfaces of every section along the entire length of the workpiece receive uniform and sufficient shot blasting treatment, and the energy consumption is significantly lower than that of simply increasing the shot blasting power. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the existing shell wall unit structure;

[0023] Figure 2 This is a schematic diagram of an I-beam.

[0024] Figure 3 This is a schematic diagram of the overall structure of this solution;

[0025] Figure 4 for Figure 3 A schematic diagram of the internal structure after removing the outer shell;

[0026] Figure 5 This is a schematic diagram of the left workpiece driver / right workpiece driver structure. Detailed Implementation

[0027] The invention will now be further described with reference to the accompanying drawings.

[0028] like Figures 1 to 5 The multi-angle arrangement of shot blasting equipment in the channel-type workpiece surface treatment system shown is as follows: Figure 2 The shot blasting process in this solution targets a large I-beam 3, which consists of an upper transverse wall 3a, a middle vertical wall 3b, and a lower transverse wall 3c. For long, narrow steel structures with concave surfaces, such as I-beams and H-beams, traditional channel-type or roller-type shot blasting machines have inherent drawbacks. Because the workpiece passes at a uniform speed on the horizontal roller conveyor, the inner surfaces of its upper and lower flanges—the upper and lower transverse walls—remain horizontal, parallel to the jet stream from the lateral shot blasters, and are obstructed by the flanges themselves. This results in insufficient shot blasting coverage and cleaning intensity on these critical stress surfaces, affecting coating adhesion and the fatigue resistance of the components. Common improvement attempts often involve increasing the number or power of the shot blasters, but these methods are energy-intensive, prone to over-blasting the outer surface of the workpiece, and fail to fundamentally solve the problem of poor projection angles on the inner surface.

[0029] The shot blasting system comprises a front-to-back through shell wall unit 1, at least one pair of shot blasting machines 4 with a spraying direction towards the inside of the shell wall unit 1 are fixedly installed on the upper, lower, left and right wall bodies of the shell wall unit 1; a workpiece passing through the inside of the shell wall unit 1 along the front-to-back direction will be subjected to shot blasting from the shot blasting machines 4 in the four directions of up, down, left and right; the shot blasting machines 4 on the upper, lower, left and right wall bodies of the shell wall unit 1 are respectively denoted as an upper shot blasting machine 4a, a lower shot blasting machine 4c, a left shot blasting machine 4d and a right shot blasting machine 4b; a plurality of shell wall units 1 are connected to each other along the front-to-back direction to form a channel type shot blasting system 2 extending along the front-to-back direction, and a shot blasting process pipeline channel 5 extending along the front-to-back direction is formed in the channel type shot blasting system 2.

[0030] In the existing structure, as shown in Figure 1 , a row of rollers 26 are arranged in the lower part of each shell wall unit 1, so that the I-beam 3 can shuttle along the extension direction of the shot blasting process pipeline channel 5 under the support of the rollers 26; in the existing structure, the upper horizontal wall 3a and the lower horizontal wall 3c of the I-beam 3 are always in a horizontal form during the process of the I-beam 3 shuttling along the extension direction of the shot blasting process pipeline channel 5 under the support of the rollers 26.

[0031] The lower surface of the upper horizontal wall 3a and the upper surface of the lower horizontal wall 3c of the I-beam 3 cannot receive the shot blasting of the upper shot blasting machine 4a and the lower shot blasting machine 4c on the shell wall unit 1 due to the shielding of the upper horizontal wall 3a and the lower horizontal wall 3c; at the same time, the plane where the lower surface of the upper horizontal wall 3a and the upper surface of the lower horizontal wall 3c are located is parallel to the shot blasting spraying direction of the left shot blasting machine 4d and the right shot blasting machine 4b on the left and right side walls of the shell wall unit 1, and is in a state that is not conducive to being effectively shot blasted by the shot blasting machine 4.

[0032] Therefore, in the existing scheme, the lower surface of the upper horizontal wall 3a and the upper surface of the lower horizontal wall 3c of the I-beam 3 are always in a state that is not conducive to being effectively shot blasted by the shot blasting machines 4 on the upper, lower, left and right sides of each shell wall unit 1 during the process of the I-beam 3 shuttling along the extension direction of the shot blasting process pipeline channel 5 under the support of the rollers 26; which further affects the final overall shot blasting quality of the workpiece.

[0033] The present scheme proposes a conveying and driving system integrated with a dynamic posture adjustment function. The core working principle is to periodically and alternately tilt the workpiece to the left and right sides during the conveying process, thereby dynamically changing the included angle between the inner surfaces of the upper and lower horizontal walls and the lateral shot blasting flow, so that these original "shadow zones" and "parallel zones" can be periodically exposed to the optimal shot blasting impact angle, realizing omnidirectional and uniform surface treatment.

[0034] The structure of the newly designed shell wall unit 1 is as shown in Figure 3 , 4, 5, the original roll 26 structure is cancelled in the shell wall unit 1; The left workpiece driver 7a and the right workpiece driver 7b are symmetrically arranged on the inner side of each shell wall unit 1;The left workpiece driver 7a and the right workpiece driver 7b are fixedly connected to the inner wall of the shell wall unit 1 by the support arm 6.

[0035] Several left workpiece drivers 7a in the shot blasting process pipeline channel 5 constitute a left workpiece driver array.

[0036] Several right workpiece drivers 7b in the shot blasting process pipeline channel 5 constitute a right workpiece driver array.

[0037] The I-beam 3 is driven by the left workpiece driver array and the right workpiece driver array to shuttle along the extension direction of the shot blasting process pipeline channel 5; The lower surface of the upper transverse wall 3a is divided into a left lower surface 25a and a right lower surface 25b; The upper surface of the lower transverse wall 3c is divided into a left upper surface 25c and a right upper surface 25d.

[0038] When the I-beam 3 shuttles at any position in the shot blasting process pipeline channel 5, at least three groups of left workpiece drivers 7a jointly lift the left lower surface 25a of the upper transverse wall 3a of the I-beam 3 upward, and at least three groups of right workpiece drivers 7b jointly lift the right lower surface 25b of the upper transverse wall 3a of the I-beam 3 upward. This multi-point distributed support design ensures the stability and balance of the workpiece during dynamic adjustment of the posture, preventing distortion or vibration due to single-point stress.

[0039] The left workpiece driver 7a and the right workpiece driver 7b are left-right symmetrical structures.

[0040] As Figure 4 And 5 The left workpiece driver 7a / right workpiece driver 7b includes a vertical through protective shell 12, which plays a protective and device shell role, and the protective shell 12 is usually welded by thickening Q235B steel plate, and the inner wall can be coated with wear-resistant rubber plate to resist the impact and wear of the shot blasting material.

[0041] The upper part of the protective shell 12 is rotationally provided with a rotating shaft 15; The rotating shaft 15 is rotationally installed on the bearing seat on the protective shell 12 through the bearing; The power device 8 is coaxially driven to connect the rotating shaft 15 through the output shaft 13; The power device 8 is a servo motor or a variable frequency motor with a precision reducer, so as to realize the accurate speed and angle control of the rotating shaft 15 forward and reverse rotation.

[0042] The rotating shaft 15 is integrally provided with two wheel plates 10 with a certain spacing, and the wheel plates 10 are made of high wear-resistant materials such as 65Mn surface quenching or ceramic bushing inlaying.

[0043] Two wheel disc 10, near the output shaft 13 of one wheel disc 10 outside edge set with annular wheel disc limit outer edge 9; A section of the rotating shaft 15 between the two wheel discs 10 is coaxially driven by the active clutch 14 with the rotating ring 11, the active clutch 14 can use electromagnetic clutch or pneumatic clutch, the system central controller controls its combination and separation.

[0044] The outer diameter of the rotating ring 11 is smaller than the outer diameter of the two wheel discs 10; When the active clutch 14 is locked, the rotating ring 11 is synchronized with the rotating shaft 15, and when the active clutch 14 is disengaged, the rotating ring 11 and the rotating shaft 15 can rotate freely relative to each other; The rotating ring 11 is provided below the winding drum 19, and the metal woven belt winding body 20 is wound on the winding drum 19; The metal woven belt 17 can be woven with high-strength stainless steel wire, which has the characteristics of flexibility, tensile strength and fatigue resistance; The metal woven belt 17 at the end of the metal woven belt winding body 20 is fixedly connected to the outer circumferential surface of the rotating ring 11; The inner circle of the winding drum 19 is fixed to the fixed shaft 60 through the coiled spring unit 18, and the two ends of the fixed shaft 60 are fixed to the shell 12; The coiled spring unit 18 is a kind of coiled spring (clock spring), which has enough pre-tightening force to maintain the tension state of the metal woven belt 17, and provides smooth rewinding force when the metal woven belt 17 is released.

[0045] The coiled spring unit 18 applies torsion to the winding drum 19, so that the winding drum 19 always has a winding tendency, and the metal woven belt 17 drawn upward by the metal woven belt winding body 20 is always in a tense state.

[0046] When the I-beam 3 shuttles in the shot blasting process pipeline channel 5, the lower left surface 25a of the upper wall 3a of the I-beam 3 is rolled by the two wheel discs 10 on the left workpiece driver 7a; The lower right surface 25b of the upper wall 3a of the I-beam 3 is rolled by the two wheel discs 10 on the right workpiece driver 7b.

[0047] When the I-beam 3 shuttles in the shot blasting process pipeline channel 5, the upper wall 3a of the I-beam 3 is constrained between the annular wheel disc limit outer edge 9 of the left workpiece driver 7a and the annular wheel disc limit outer edge 9 of the right workpiece driver 7b; Avoid deviation during the shuttling process.

[0048] Working method:

[0049] Preparation, in the initial state, the active clutch 14 on the left workpiece driver 7a and the right workpiece driver 7b is in the disengaged state, the I-beam 3 is smoothly horizontally shuttled into the shot blasting process pipeline channel 5 along the length direction, the lower left surface 25a of the upper wall 3a of the I-beam 3 is rolled by the two wheel discs 10 on the left workpiece driver 7a; The lower right surface 25b of the upper wall 3a of the I-beam 3 is rolled by the two wheel discs 10 on the right workpiece driver 7b; At the same time, all the shot blasters 4 enter the working state.

[0050] Step one, control all the active clutches 14 on the left workpiece drivers 7a into the locked state; while all the active clutches 14 on the right workpiece drivers 7b remain disengaged; then synchronously control the rotation shafts 15 on the left workpiece drivers 7a and the right workpiece drivers 7b to rotate forward synchronously, the I-beam 3 gradually displaces forward along the shot blasting process pipeline channel 5 under the common rolling rotation of the pulley discs 10 on the left workpiece drivers 7a and the pulley discs 10 on the right workpiece drivers 7b; since the active clutches 14 on the left workpiece drivers 7a are in the locked state, the rotation shafts 15 on the left workpiece drivers 7a will wind the metal woven belt 17 on the rotating ring 11 during the forward rotation, so that the outer diameter of the rotating ring 11 on the left workpiece drivers 7a gradually increases, and the coil spring unit 18 stores elastic potential energy; when the outer diameter of the rotating ring 11 on the left workpiece drivers 7a gradually increases to exceed the pulley disc 10, the rotating ring 11 with the increased outer diameter of the rotating ring 11 on each left workpiece driver 7a will push up the left lower surface 25a of the upper transverse wall 3a of the I-beam 3 by a small segment, so that the I-beam 3 begins to present a slight left high and right low slight inclination state; at this time, the inclination angle of the workpiece can be accurately adjusted by controlling the rotation number of the rotation shaft 15, and the typical inclination angle is between 3-5 degrees, which is enough to significantly improve the impact effect of the shot blasting flow on the inner surface, while ensuring the stability and smoothness of the workpiece conveying. At this time, the lower surface of the upper transverse wall 3a and the upper surface of the lower transverse wall 3c both begin to change from the original parallel to a certain angle with the shot blasting jet direction of the left shot blasting device 4d and the right shot blasting device 4b; so that the left lower surface 25a of the upper transverse wall 3a and the right upper surface 25d of the lower transverse wall 3c of the I-beam 3 can effectively receive the shot blasting of the left shot blasting device 4d and the right shot blasting device 4b respectively.

[0051] Then synchronously control the rotation shafts 15 on the left workpiece drivers 7a and the right workpiece drivers 7b to rotate reversely synchronously, the I-beam 3 gradually displaces backward along the shot blasting process pipeline channel 5 to return to the initial position of this step, the coil spring unit 18 on the left workpiece driver 7a drives the winding drum 19 to adaptively wind the metal woven belt 17, so that the outer diameter of the rotating ring 11 on each left workpiece driver 7a restores to be smaller than the outer diameter of the pulley disc 10, and the posture of the I-beam 3 restores to the horizontal form of the initial state of this step. This return process makes the workpiece in the left inclined posture in the same local area experience a round trip in the shot blasting area and accept a longer time of lateral shot blasting treatment.

[0052] Step two, control all the active clutches 14 on the left workpiece drivers 7a to enter the disengaged state; while all the active clutches 14 on the right workpiece drivers 7b remain locked; then synchronously control the rotation shafts 15 on the left workpiece drivers 7a and the right workpiece drivers 7b to rotate forward synchronously, the I-beam 3 gradually displaces forward along the shot blasting process pipeline channel 5 under the common rolling rotation of the pulley discs 10 on the left workpiece drivers 7a and the pulley discs 10 on the right workpiece drivers 7b; since the active clutches 14 on the right workpiece drivers 7b are in the locked state, the rotation shafts 15 on the right workpiece drivers 7b will wind the metal woven belt 17 on the rotating ring sleeve 11 in the process of forward rotation, so that the outer diameter of the rotating ring sleeve 11 on the right workpiece drivers 7b gradually increases, and the coil spring unit 18 accumulates elastic potential energy; when the outer diameter of the rotating ring sleeve 11 on the right workpiece drivers 7b gradually increases to exceed the pulley disc 10, the rotating ring sleeve 11 with the increased outer diameter of the rotating ring sleeve 11 on each right workpiece driver 7b will push up the right lower surface 25b of the upper transverse wall 3a of the I-beam 3 for a small segment, so that the I-beam 3 begins to present a slight left-low and right-high slight inclination state, and similarly, the right inclination angle is also controlled at 3-5 degrees. At this time, the lower surface of the upper transverse wall 3a and the upper surface of the lower transverse wall 3c both begin to change from the originally parallel to the shot blasting jet direction of the left shot blasting device 4d and the right shot blasting device 4b to a certain angle; so that the right lower surface 25b of the upper transverse wall 3a and the left upper surface 25c of the lower transverse wall 3c of the I-beam 3 can effectively receive the shot blasting of the right shot blasting device 4b and the left shot blasting device 4d respectively;

[0053] Then synchronously control the rotation shafts 15 on the left workpiece drivers 7a and the right workpiece drivers 7b to rotate reversely synchronously, the I-beam 3 gradually displaces backward along the shot blasting process pipeline channel 5 to retreat to the initial position of this step, the coil spring unit 18 on the right workpiece driver 7b drives the winding drum 19 to adaptively wind the metal woven belt 17 led out, so that the outer diameter of the rotating ring sleeve 11 on each right workpiece driver 7b recovers to be less than the outer diameter of the pulley disc 10, and the posture of the I-beam 3 recovers to the horizontal form of the initial state of this step. This process makes the same local area of the workpiece also receive sufficient lateral shot blasting in the right inclination posture.

[0054] Step three, control the active clutch 14 on the left workpiece driver 7a and the right workpiece driver 7b to enter the disengaged state, and then synchronously control the rotation shaft 15 on the left workpiece driver 7a and the right workpiece driver 7b to rotate forward synchronously, the I-beam 3 gradually displaces L along the shot blasting process pipeline channel 5 under the common rolling rotation of the pulley 10 on each left workpiece driver 7a and the pulley 10 on each right workpiece driver 7b, and then pauses, the distance L is one-thirtieth of the total length of the I-beam 3; in this step, the workpiece is conveyed in a horizontal posture for a distance L, for example, 0.4 meters, so that it enters a new section of the shot blasting area. The displacement L ensures that each section of the workpiece can sequentially experience the complete cycle of "left tilt processing-retreat", "right tilt processing-retreat", and "horizontal forward".

[0055] After the complete operation of "step one" to "step three", the I-beam 3 is gradually tilted left and right once, and the I-beam 3 is pushed forward a total of L in the shot blasting process pipeline channel 5;

[0056] The process of continuously circulating "step one" to "step three" is repeated until the I-beam 3 completely shuttles through the shot blasting process pipeline channel 5. During the process of the I-beam 3 completely shuttling through the shot blasting process pipeline channel 5, the I-beam 3 is gradually tilted left and right once for each L forward displacement, so that the lower surface of the upper transverse wall 3a and the upper surface of the lower transverse wall 3c, which are originally not conducive to receiving shot blasting, can also fully and effectively receive shot blasting; so that any surface of the I-beam 3 can fully receive shot blasting, avoiding the problem of uneven shot blasting.

[0057] The present scheme realizes the active, dynamic, and periodic adjustment of the workpiece posture in the continuous conveying process through a clever combination of structure and control logic. It does not need to modify the existing shot blasting device layout, but changes the workpiece itself to adapt to the shot blasting flow, solves the problem of insufficient shot blasting on the inner surface of complex section steel at the lowest energy cost, and significantly improves the processing uniformity and quality.

[0058] The above only describes the preferred embodiments of the present application, and it should be noted that for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements should also be considered within the protection scope of the present application.

Claims

1. A channel-type workpiece surface treatment system with shot blasting machines arranged at multiple angles, characterized in that: The system includes a shell wall unit (1) that runs through the front and back, and shot blasters (4) are installed on the upper, lower, left and right walls of the shell wall unit (1); several shell wall units (1) are spliced ​​together in the front and back direction to form a channel shot blasting system (2), and a shot blasting process production line channel (5) is formed inside the channel shot blasting system (2); a left workpiece driver (7a) and a right workpiece driver (7b) are symmetrically arranged on the inner side of each shell wall unit (1); several left workpiece drivers (7a) in the shot blasting process production line channel (5) constitute a left workpiece driver array; several right workpiece drivers (7b) in the shot blasting process production line channel (5) constitute a right workpiece driver array; the I-beam (3) shuttles along the extension direction of the shot blasting process production line channel (5) under the joint lifting and driving of the left workpiece driver array and the right workpiece driver array.

2. The multi-angle arrangement of shot blasting equipment in a channel-type workpiece surface treatment system according to claim 1, characterized in that: The lower surface of the upper transverse wall (3a) of the I-beam (3) is divided into the lower left surface (25a) and the lower right surface (25b); the upper surface of the lower transverse wall (3c) of the I-beam (3) is divided into the upper left surface (25c) and the upper right surface (25d); when the I-beam (3) is shuttling in any position in the shot blasting process production line channel (5), at least three sets of left workpiece actuators (7a) jointly lift the lower left surface (25a) of the upper transverse wall (3a) of the I-beam (3) upward, and at the same time at least three sets of right workpiece actuators (7b) jointly lift the lower right surface (25b) of the upper transverse wall (3a) of the I-beam (3) upward.

3. The multi-angle arrangement of shot blasting equipment in a channel-type workpiece surface treatment system according to claim 2, characterized in that: The left workpiece driver (7a) and the right workpiece driver (7b) are symmetrical structures. The left workpiece driver (7a) and the right workpiece driver (7b) include a vertically penetrating protective shell (12), and a rotating shaft (15) is rotatably arranged in the upper part of the protective shell (12). The rotating shaft (15) is rotatably mounted on the bearing seat on the protective shell (12) through a bearing. The power unit (8) is coaxially connected to the rotating shaft (15) through the output shaft (13). Two wheel disks (10) are coaxially and integrally arranged on the rotating shaft (15) with a spacing between them. Among the two wheel disks (10), the outer edge of the wheel disk (10) closer to the output shaft (13) is provided with an annular wheel disk limiting outer edge (9). A section of the rotating shaft (15) between the two wheel disks (10) is coaxially driven and engaged with a rotating ring sleeve (11) through an active clutch (14). The outer diameter of the rotating ring sleeve (11) is smaller than the outer diameter of the two wheel disks (10). When the active clutch (14) locks, the rotating ring (11) and the rotating shaft (15) are synchronized. When the active clutch (14) disengages, the rotating ring (11) and the rotating shaft (15) can rotate freely relative to each other. A drum (19) is provided below the rotating ring (11). A metal braided strip winding body (20) is wound on the drum (19). The end of the metal braided strip (17) led upward from the metal braided strip winding body (20) is fixedly connected to the outer circumference of the rotating ring (11). The inner ring of the drum (19) is coaxially connected to the fixed shaft (60) through the coil spring unit (18). The two ends of the fixed shaft (60) are fixed on the protective shell (12). The coil spring unit (18) applies torque to the drum (19) so that the drum (19) always has a winding tendency, thereby making the metal braided strip (17) led upward from the metal braided strip winding body (20) always taut.

4. The multi-angle arrangement of shot blasting equipment in a channel-type workpiece surface treatment system according to claim 3, characterized in that: When the I-beam (3) moves through the shot blasting process production line channel (5), the lower left surface (25a) of the upper transverse wall (3a) of the I-beam (3) is rolled by two discs (10) on several left workpiece drivers (7a); the lower right surface (25b) of the upper transverse wall (3a) of the I-beam (3) is rolled by two discs (10) on several right workpiece drivers (7b).

5. The multi-angle arrangement of shot blasting equipment in a channel-type workpiece surface treatment system according to claim 4, characterized in that: When the I-beam (3) moves through the shot blasting process production line channel (5), the upper transverse wall (3a) of the I-beam (3) is constrained between the outer edge (9) of the annular wheel limit of the left workpiece driver (7a) and the outer edge (9) of the annular wheel limit of the right workpiece driver (7b).

6. The multi-angle arrangement of shot blasting equipment in a channel-type workpiece surface treatment system according to claim 5, characterized in that: Step 1: Control the active clutches (14) on all left workpiece drivers (7a) to enter the locked state; while the active clutches (14) on all right workpiece drivers (7b) remain disengaged; then synchronously control the rotating shafts (15) on the left workpiece drivers (7a) and right workpiece drivers (7b) to rotate synchronously in the forward direction, and the I-beam (3) gradually moves forward along the shot blasting process production line channel (5) under the combined rolling and rotating action of the wheel disks (10) on each left workpiece driver (7a) and each right workpiece driver (7b); until the left workpiece driver (7a) ... a) The outer diameter of the rotating ring (11) on the left workpiece driver (7a) gradually increases to exceed the wheel (10); then the rotating shaft (15) on the left workpiece driver (7a) and the right workpiece driver (7b) are synchronously controlled to rotate in opposite directions. The I-beam (3) moves backward along the shot blasting process production line channel (5) to return to the initial position of this step. The coil spring unit (18) on the left workpiece driver (7a) drives the drum (19) to adaptively wind up the metal braided strip (17) that is led out, so that the outer diameter of the rotating ring (11) on each left workpiece driver (7a) is restored to be smaller than the outer diameter of the wheel (10). Step 2: Control the active clutches (14) on all left workpiece drivers (7a) to disengage; while the active clutches (14) on all right workpiece drivers (7b) remain locked; then synchronously control the rotating shafts (15) on the left workpiece drivers (7a) and right workpiece drivers (7b) to rotate synchronously in the forward direction. Under the combined rolling and rotating action of the wheel discs (10) on each left workpiece driver (7a) and each right workpiece driver (7b), the I-beam (3) gradually moves forward along the shot blasting process production line channel (5); until the outer diameter of the rotating ring (11) on the right workpiece driver (7b) gradually increases to exceed the wheel disc (10). Then, the rotating shafts (15) on the left workpiece driver (7a) and the right workpiece driver (7b) are synchronously controlled to rotate in opposite directions. The I-beam (3) gradually moves backward along the shot blasting process production line channel (5) to return to the initial position of this step. The coil spring unit (18) on the right workpiece driver (7b) drives the drum (19) to adaptively wind up the metal braided strip (17) that is led out, so that the outer diameter of the rotating ring (11) on each right workpiece driver (7b) is restored to a size smaller than the outer diameter of the wheel (10). Step 3: Control the active clutches (14) on the left workpiece driver (7a) and the right workpiece driver (7b) to disengage. Then, control the rotating shafts (15) on the left workpiece driver (7a) and the right workpiece driver (7b) to rotate synchronously in the forward direction. Under the combined rolling and rotating action of the wheel disks (10) on each left workpiece driver (7a) and each right workpiece driver (7b), the I-beam (3) gradually moves forward L along the shot blasting process production line channel (5) and then stops.

7. The multi-angle arrangement of shot blasting equipment in a channel-type workpiece surface treatment system according to claim 6, characterized in that: The process of "Step 1" to "Step 3" is repeated continuously until the I-beam (3) completely passes through the shot blasting process production line channel (5).

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