Pickling tank material rack

Abstract

The invention discloses a pickling tank material rack which comprises a material placing rack used for hanging workpieces and material rack supports oppositely arranged on the two sides of a pickling tank and used for placing the material placing rack, the height of the material rack supports is at least half of the depth of the pickling tank, chamfers are formed at the bottom of the material placing rack, and guide baffles are connected to the tops of the material rack supports. The included angle between the guide baffle and the top face of the material frame support and the chamfer of the bottom of the material placing frame are complementary angles, so that the material placing frame is guided to the bracket platform through the guide baffle in the descending process. The height of the material frame support is increased, and the guide baffle is matched with the chamfer at the bottom of the material frame, so that the material frame can stably fall on the material frame support, swinging of a workpiece is reduced, the workpiece is prevented from colliding with the inner wall of the pickling tank, the service life of the pickling tank is prolonged, and the use and maintenance cost of the pickling tank is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of pickling equipment and relates to a material rack for a pickling tank, and in particular to a material rack for pickling and immersing workpieces in a pickling tank. Background Art

[0002] A pickling tank is a device used to remove oxides, rust and other impurities on the metal surface to provide better adhesion conditions for subsequent treatments such as electroplating and coating. The working principle of the pickling tank is to remove impurities through the chemical reaction between the acid solution and the metal surface. When the metal is immersed in the pickling tank, the acid will react with the oxides, rust products, etc. on the metal surface to produce substances that are soluble in water or easy to remove from the metal surface. Because the acid is corrosive, the pickling tank wall needs to be treated with anti-corrosion during construction, such as anti-corrosion coating, acid-resistant bricks, epoxy fiberglass installation, etc. The existing process of pickling the workpiece is usually to hang the workpiece on the rack, and then use the crane to lift the rack so that the workpiece is immersed in the pickling tank to complete the pickling process. However, when using an overhead crane to transport the workpieces on the rack into the pickling tank, the rack will swing due to the shaking of the overhead crane wire rope and the inertia of the rack movement, which can easily cause the workpieces on the rack to collide with the side wall of the pickling tank, which will not only cause damage to the workpieces, but also destroy the anti-corrosion measures on the surface of the pickling tank, seriously affecting the service life of the pickling tank. Summary of the invention

[0003] The present invention provides a pickling tank material rack to solve at least one of the above technical problems.

[0004] The technical solution adopted by the present invention is: a pickling tank material rack, comprising a material rack for hanging workpieces and a material rack support arranged on both sides of the pickling tank for placing the material rack, the height of the material rack support is at least half of the depth of the pickling tank, the bottom of the material rack is formed with a chamfer, the top of the material rack support is connected to a guide baffle, the angle between the guide baffle and the top surface of the material rack support is complementary to the chamfer of the bottom of the material rack, so that the material rack is guided to the bracket platform by the guide baffle during the descent process.

[0005] In a preferred embodiment, a movable groove extending along the height direction of the material rack support is formed on the material rack support, and the width of the movable groove is not less than the width of the material rack, so that the material rack can move downward along the movable groove.

[0006] In a preferred embodiment, a slide rail groove extending along the height direction of the material rack support is formed on the inner wall of the movable groove, a bracket slide rail is connected in the slide rail groove, a bracket slide block is connected to the bracket slide rail, and the bracket slide block has a horizontal bracket plate.

[0007] In a preferred embodiment, the top surface of the horizontal bracket plate and the bottom surface of the material rack are formed with mutually matching horizontal and / or vertical stripes.

[0008] In a preferred embodiment, the bracket slide rail includes a base plate and a first slide rail and a second slide rail connected to the base plate and parallel to each other, the bracket slider includes a first moving block, a second moving block, a third moving block, a fourth moving block and a sliding frame, the sliding frame is connected to a sliding screw extending axially along the slide rail, and the sliding screw is connected to a screw motor to drive the bracket slider to move along the bracket slide rail through the screw motor.

[0009] In a preferred embodiment, a plurality of lubricating oil grooves are formed on the inner side walls of the first moving block, the second moving block, the third moving block and the fourth moving block, and the axial directions of two adjacent lubricating oil grooves form a "V" shape.

[0010] In a preferred embodiment, the bottom of the movable groove has a buffer groove, a buffer plate is connected to the buffer groove, the bottom surface of the buffer plate has a buffer rod extending into the buffer groove, and a buffer spring is sleeved on the outer side of the buffer rod.

[0011] In a preferred embodiment, the material rack includes a first connecting frame connected to the overhead crane and a second connecting frame connected to the workpiece, a plurality of sliding rods extending in the vertical direction are connected between the first connecting frame and the second connecting frame, the length of the sliding rod is greater than the height of the material rack support, and a limiting frame is connected above the sliding rod so that the limiting frame moves along the sliding rod.

[0012] In a preferred embodiment, the limiting frame is provided with a sliding groove cooperating with the sliding rod, the inner side wall of the sliding groove is formed with a plurality of lubricating oil grooves, and the axial direction of two adjacent lubricating oil grooves forms a "V" shape.

[0013] In a preferred embodiment, the material rack support has a height adjustment device.

[0014] Due to the adoption of the above technical solution, the beneficial effects achieved by the present invention are as follows: 1. As a preferred embodiment of the present invention, the height of the rack support is raised to half the depth of the pickling tank. At the same time, through the cooperation of the guide baffle and the chamfer at the bottom of the rack, when the workpiece on the rack is placed in the pickling tank by the overhead crane, as the height of the rack is reduced, the rack can move downward along the guide baffle, and finally guide the rack to the placement area of ​​the rack support. In this process, the swing of the rack can be reduced under the guidance and limiting effect of the guide baffle, thereby reducing the swing of the workpiece and avoiding the collision of the workpiece with the inner wall of the pickling tank caused by the swing. At the same time, the height-adjusted rack support can complete the anti-sway and anti-vibration control of the rack before the workpiece contacts the pickling tank, ensuring that the workpiece enters the pickling tank smoothly, preventing the workpiece from colliding with the inner wall of the pickling tank, thereby extending the service life of the pickling tank and reducing the use cost and maintenance cost of the pickling tank.

[0015] 2. As a preferred embodiment of the present invention, the movable groove formed on the material rack support can cooperate with the material rack, so that the material rack enters the movable groove after being guided and limited by the guide baffle, and as the material rack is driven downward by the crane, the material rack can continue to move downward along the movable groove, so that the workpiece on the material rack can be immersed deeper below the liquid surface of the pickling tank. In this process, the movable groove can limit the movement of the material rack, avoid the shaking of the material rack, and then avoid the swing of the workpiece, and prevent the workpiece from colliding with the inner wall of the pickling tank.

[0016] 3. As a preferred embodiment of the present invention, the cooperation between the bracket slide rail and the bracket slider in the slide rail groove can utilize the horizontal bracket plate on the bracket slider to lift the material rack. In this way, after the material rack is placed on the material rack support by the overhead crane, the suspension of the overhead crane on the material rack can be removed, so that the overhead crane can be used to lift other material racks, thereby improving the lifting efficiency of the overhead crane. In other words, in the process of pickling workpieces in the pickling tank, the workpieces on the material rack can be immersed in the pickling tank by the movement of the bracket slider relative to the bracket slide rail; after the pickling is completed, the material rack can be raised by the movement of the bracket slider relative to the bracket slide rail, thereby allowing the workpieces in the pickling tank to leave the liquid surface of the pickling tank for drying, thereby improving the working efficiency of the entire acid process.

[0017] 4. As a preferred embodiment of the present invention, the cooperation between the sliding frame and the screw rod can make the movement between the bracket slider and the bracket slide rail smoother, ensuring the smooth downward or upward movement of the material rack. At the same time, the cooperation between the sliding frame and the screw rod is more reliable, preventing the swing of the suspended workpiece caused by the rapid downward or upward movement of the material rack due to a malfunction.

[0018] 5. As a preferred embodiment of the present invention, the axial direction of the lubricating oil groove is formed into a "V" shape, so that when the moving block moves up or down, the lubricating oil can permeate outward from one of the lubricating oil grooves, and the other lubricating oil groove can recover the excess lubricating oil that has leaked out, thereby improving the use efficiency of the lubricating oil and avoiding the accumulation of lubricating oil at the bottom of the slide rail due to excessive leakage of the lubricating oil.

[0019] 6. As a preferred embodiment of the present invention, the cooperation of the buffer plate and the buffer spring can play a buffering role when the material rack falls to the bottom of the movable groove, thereby reducing the collision between the material rack and the bottom of the movable groove.

[0020] 7. As a preferred embodiment of the present invention, the material rack includes two connecting racks and a limiting rack, so that after the material rack is placed on the material rack support, the limiting rack is limited under the guide baffle of the material rack support. At this time, the connecting rack can continue to move downward relative to the limiting rack by moving the crane hook downward, thereby placing the workpiece suspended on the connecting rack in the pickling tank. In this process, due to the limitation of the position of the limiting rack, the connecting rack can only move along the sliding groove through the sliding rod, thereby ensuring the movement trajectory of the connecting rack and avoiding the swing of the workpiece on the connecting rack. In the process of the upward movement of the crane hook, before the connecting rack contacts the limiting rack, as the connecting rack rises, the sliding rod moves along the sliding groove, the distance between the connecting rack and the limiting rack is reduced, and finally the connecting rack contacts the limiting rack.

[0021] 8. As a preferred embodiment of the present invention, the height of the rack support can be adjusted according to the size of the workpiece, so that the workpiece can be completely immersed in the pickling tank during the pickling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 It is a schematic diagram of the coordination structure between the material rack and the material rack support according to an embodiment of the present invention; Figure 2 It is a schematic diagram of the coordination structure of the material rack, the material rack support and the pickling tank according to an embodiment of the present invention; Figure 3 It is a schematic diagram of the cooperation structure between the bracket slide rail and the material rack bracket according to an embodiment of the present invention; Figure 4 It is a schematic diagram of the cooperation structure of a bracket slide rail and a bracket slider according to an embodiment of the present invention; Figure 5 It is a front view of the matching structure of the bracket slide rail and the bracket slider according to an embodiment of the present invention; Figure 6 It is a schematic diagram of the coordination structure of a material rack, a material rack support and a pickling tank according to another embodiment of the present invention; Figure 7 It is a schematic diagram of the matching structure between a buffer plate and a material rack support according to an embodiment of the present invention; Figure 8 Schematic diagram of the structure of a lubricating oil groove according to an embodiment of the present invention.

[0023] Reference numerals 1. Material rack; 10. Chamfering; 11. First connecting rack; 12. Second connecting rack; 13. Sliding rod; 14. Limiting rack; 2. Material rack support; 20. Guide baffle; 21. Movable slot; 22. Slide rail slot; 23. Buffer slot; 24. Buffer plate; 25. Buffer spring; 3. Bracket slide rail; 31. Bottom plate; 32. First slide rail; 33. Second slide rail; 4. Bracket slider; 41. First moving block; 411. First lubricating oil groove; 412. Second lubricating oil groove; 42. Second moving block; 43. Third moving block; 44. Fourth moving block; 45. Sliding frame; 46. Sliding screw; 47. Screw motor; 5. Horizontal bracket plate. DETAILED DESCRIPTION

[0024] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in an exemplary manner in conjunction with the accompanying drawings.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0026] In addition, in the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the present invention, unless otherwise clearly specified and limited, the first feature "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "implementation method", "example", "one embodiment", "example" or "specific example" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0029] Example 1 As 1 and Figure 2 As shown, a pickling tank material rack includes a material rack 1 for hanging workpieces and material rack supports 2 arranged opposite to each other on both sides of the pickling tank for placing the material rack 1. The height of the material rack support 2 is at least half of the depth of the pickling tank. Specifically, the depth of the pickling tank is three meters, and the height of the material rack support 2 is set to two meters. A chamfer 10 is formed at the bottom of the material rack 1, and a guide baffle 20 is connected to the top of the material rack support 2. The angle between the guide baffle 20 and the top surface of the material rack support 2 is a complementary angle to the chamfer 10 at the bottom of the material rack 1, so that the material rack 1 is guided to the bracket platform by the guide baffle 20 during the descent.

[0030] In this embodiment, when the workpiece on the material rack 1 is placed in the pickling tank by the overhead crane, as the height of the material rack 1 is reduced, the material rack 1 can move downward along the guide baffle 20, and finally guide the material rack 1 to the placement area of ​​the material rack support 2. In this process, the swing of the material rack 1 can be reduced under the guidance and limiting effect of the guide baffle 20, thereby reducing the swing of the workpiece and avoiding the collision of the workpiece with the inner wall of the pickling tank caused by the swing. At the same time, the height-adjusted material rack support 2 can complete the anti-sway and anti-vibration control of the material rack 1 before the workpiece contacts the pickling tank, ensuring that the workpiece enters the pickling tank smoothly, preventing the workpiece from colliding with the inner wall of the pickling tank, thereby extending the service life of the pickling tank and reducing the use cost and maintenance cost of the pickling tank.

[0031] Example 2 Different from Example 1, Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, a movable groove 21 extending along the height direction of the material rack support 2 is formed on the material rack support 2, and the width of the movable groove 21 is not less than the width of the material rack 1. Specifically, there is a gap between the movable groove 21 and the material rack 1, and the width of the gap is controlled to be about 1 cm. At this time, the movable groove 21 is equivalent to the guide rail of the material rack 1, so that the material rack 1 moves downward along the movable groove 21. In this process, the movable groove 21 can limit the movement of the material rack 1, avoid the shaking of the material rack 1, and then avoid the swing of the workpiece, and prevent the workpiece from colliding with the inner wall of the pickling tank. As the crane drives the material rack 1 to move downward, the material rack 1 can continue to move downward along the movable groove 21, so that the workpiece on the material rack 1 can be immersed deeper below the liquid surface of the pickling tank.

[0032] Further, such as Figure 7 As shown, the bottom of the movable groove 21 has a buffer groove 23, and the buffer groove 23 is connected to a buffer plate 24. The bottom surface of the buffer plate 24 has a buffer rod extending into the buffer groove 23, and the outer side of the buffer rod is sleeved with a buffer spring 25. The cooperation of the buffer plate 24 and the buffer spring 25 can play a buffering role when the material rack 1 falls to the bottom of the movable groove 21, thereby reducing the collision between the material rack 1 and the bottom of the movable groove 21.

[0033] Further, such as Figure 3 , Figure 4 , Figure 5 As shown, a slide rail groove 22 extending in the height direction of the material rack support 2 is formed on the inner wall of the movable groove 21, and a bracket slide rail 3 is connected in the slide rail groove 22, and a bracket slider 4 is connected to the bracket slide rail 3, and the bracket slider 4 has a horizontal bracket plate 5. The arrangement of the bracket slide rail 3 and the bracket slider 4 can remove the suspension of the material rack 1 by the overhead crane after placing the material rack 1 on the material rack support 2, so that the overhead crane can lift other material racks 1, thereby improving the lifting efficiency of the overhead crane.

[0034] Specifically, in the process of pickling workpieces in the pickling tank, the workpieces on the material rack 1 can be immersed in the pickling tank by the movement of the bracket slider 4 relative to the bracket slide rail 3; after the pickling is completed, the material rack 1 can be raised by the movement of the bracket slider 4 relative to the bracket slide rail 3, so that the workpieces in the pickling tank can be separated from the liquid surface of the pickling tank for drying, thereby improving the working efficiency of the entire acid process.

[0035] Furthermore, the bracket slide rail 3 includes a bottom plate 31 and a first slide rail 32 and a second slide rail 33 connected to the bottom plate 31 and parallel to each other. The bracket slider 4 includes a first moving block 41, a second moving block 42, a third moving block 43, a fourth moving block 44 and a sliding frame 45. The sliding frame 45 is connected to a sliding screw rod 46 extending along the axial direction of the slide rail. The sliding screw rod 46 is connected to a screw motor 47 to drive the bracket slider 4 to move along the bracket slide rail 3 through the screw motor 47. By using the cooperation of the sliding frame 45 and the screw rod, the movement between the bracket slider 4 and the bracket slide rail 3 can be made more stable, ensuring the stable downward or upward movement of the material rack 1. At the same time, the cooperation between the sliding frame 45 and the screw rod is more reliable, preventing the swing of the suspended workpiece caused by the rapid downward or rapid upward movement of the material rack due to a fault.

[0036] Specifically, the bracket slide rail 3 includes a first slide rail 32 and a second slide rail 33. The first slide rail 32 is connected to a first moving block 41 and a second second moving block 42. The second slide rail 33 is connected to a third moving block 43 and a fourth moving block 44. The four moving blocks are connected to a combination plate. The combination plate is connected to a horizontal bracket plate 5. Through the cooperation of the two slide rails and the four moving blocks, the operation of the bracket slide rail 3 and the bracket slider 4 can be made more reliable. When one of the moving blocks has a problem, the bracket slide rail 3 and the bracket slider 4 can still work normally. The movement trajectory can also be made more stable. The moving blocks on the two slide rails can restrict each other's movement under the connection of the combination plate to avoid the shaking of the horizontal bracket plate 5 caused by the shaking between the moving blocks and the slide rails.

[0037] Furthermore, if Figure 8 As shown, the inner side walls of the first moving block 41, the second moving block 42, the third moving block 43 and the fourth moving block 44 are formed with a plurality of lubricating oil grooves, and the axial directions of two adjacent lubricating oil grooves form a "V" shape. Specifically, two lubricating oil grooves form a group, and each group of lubricating oil grooves includes a first lubricating oil groove 411 and a second lubricating oil groove 412. When the angle between the axial direction of the first lubricating oil groove 411 and the radial direction of the moving block is 45°, the angle between the axial direction of the second lubricating oil groove 412 and the radial direction of the moving block is 135°. When the moving block moves upward or downward relative to the slide rail, the lubricating oil in the first lubricating oil groove 411 permeates outward, and the second lubricating oil groove 412 recovers the excess lubricating oil that leaks out, thereby improving the use efficiency of the lubricating oil and avoiding the accumulation of lubricating oil at the bottom of the slide rail due to excessive leakage of the lubricating oil. After a period of use, the connection direction of the moving block can be changed.

[0038] Furthermore, the top surface of the horizontal bracket plate 5 and the bottom surface of the material rack 1 are formed with mutually matching horizontal stripes, vertical stripes, or intersections of horizontal stripes and vertical stripes. On the one hand, this texture design can increase the friction between the horizontal bracket plate 5 and the bottom surface of the material rack 1 to avoid the mutual movement of the two when the material rack 1 is on the horizontal bracket plate 5. On the other hand, the texture can also play a limiting role for the two.

[0039] Example 3 like Figure 6 As shown, different from Example 1 and Example 2, the material rack 1 includes a first connecting frame 11 connected to the overhead crane and a second connecting frame 12 connected to the workpiece, and a plurality of sliding rods 13 extending in the vertical direction are connected between the first connecting frame 11 and the second connecting frame 12. The length of the sliding rod 13 is greater than the height of the material rack support 2, and a limiting frame 14 is connected to the sliding rod 13 so that the limiting frame 14 moves along the sliding rod 13.

[0040] Furthermore, the limit frame 14 has a sliding groove that cooperates with the sliding rod 13, and the inner wall of the sliding groove is formed with multiple lubricating oil grooves. The setting method of the lubricating oil grooves refers to the setting method of the lubricating oil grooves of the moving block in Example 2, and the axial direction of two adjacent lubricating oil grooves forms a "V" shape.

[0041] During use, the first connecting frame 11 is connected by the overhead crane, and the workpiece is suspended on the second connecting frame 12. At this time, under the action of gravity, the bottom surface of the limit frame 14 contacts the top surface of the second connecting frame 12. In the process of the overhead crane lifting the first connecting frame 11 downward, the limit frame 14 is placed on the material rack support 2 under the guidance and limiting action of the guide baffle 20. At this time, as the overhead crane continues to move downward, it is blocked by the material rack support 2 and no longer moves downward. The sliding rod 13 moves relative to the sliding groove to make the first connecting frame 11 and the second connecting frame 12 continue to move downward until the bottom surface of the first connecting frame 11 contacts the top surface of the limit frame 14. In the process of the overhead crane hook moving upward, the sliding rod 13 moves along the sliding groove, the distance between the top surface of the second connecting frame 12 and the bottom surface of the limit frame 14 is reduced, and finally the connecting frame contacts the limit frame 14. At this time, the hook continues to move upward, and the limit frame 14 falls off the material rack support 2. In this process, the position of the limit frame 14, the sliding rod 13 and the sliding groove is limited, so that the swing of the first connecting frame 11 and the second connecting frame 12 is avoided, and the swing of the workpiece is avoided, and the collision of the workpiece with the inner wall of the pickling tank is prevented, thereby extending the service life of the pickling tank and reducing the use and maintenance costs of the pickling tank.

[0042] Furthermore, the material rack support 2 has a height adjustment device. The height adjustment device uses a hydraulic rod to adjust the height of the material rack support 2. It can be adjusted according to the size of the workpiece, so that the workpiece can be completely immersed in the pickling tank during the pickling process.

[0043] Anything not described in the present invention can be achieved by adopting or drawing on existing technologies.

[0044] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0045] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A pickling tank rack, comprising a rack (1) for hanging workpieces and rack supports (2) arranged on two sides of the pickling tank facing each other and used to place the rack (1), characterized in that: The height of the material rack support (2) is at least half the depth of the pickling tank, the bottom of the material rack (1) is formed with a chamfer (10), the top of the material rack support (2) is connected to a guide baffle (20), and the angle between the guide baffle (20) and the top surface of the material rack support (2) and the chamfer (10) at the bottom of the material rack (1) are complementary angles, so that the material rack (1) is guided to the bracket platform by the guide baffle (20) during the descent process.

2. The pickling tank rack according to claim 1, characterized in that: The material rack support (2) is formed with a movable groove (21) extending in the height direction of the material rack support (2), and the width of the movable groove (21) is not less than the width of the material rack (1), so that the material rack (1) can move downward along the movable groove (21).

3. The pickling tank rack according to claim 2, characterized in that: A slide rail groove (22) extending in the height direction of the material rack support (2) is formed on the inner wall of the movable groove (21); a bracket slide rail (3) is connected to the slide rail groove (22); a bracket slide block (4) is connected to the bracket slide rail (3); and the bracket slide block (4) has a horizontal bracket plate (5).

4. The pickling tank rack according to claim 3, characterized in that: The top surface of the horizontal bracket plate (5) and the bottom surface of the material rack (1) are formed with mutually matching horizontal stripes and / or vertical stripes.

5. The pickling tank rack according to claim 3, characterized in that: The bracket slide rail (3) comprises a base plate (31) and a first slide rail (32) and a second slide rail (33) connected to the base plate (31) and parallel to each other. The bracket slider (4) comprises a first moving block (41), a second moving block (42), a third moving block (43), a fourth moving block (44) and a sliding frame (45). The sliding frame (45) is connected to a sliding screw (46) extending axially along the slide rail. The sliding screw (46) is connected to a screw motor (47) so that the bracket slider (4) is driven by the screw motor (47) to move along the bracket slide rail (3).

6. The pickling tank rack according to claim 5, characterized in that: The inner side walls of the first moving block (41), the second moving block (42), the third moving block (43) and the fourth moving block (44) are formed with a plurality of lubricating oil grooves, and the axial directions of two adjacent lubricating oil grooves form a "V" shape.

7. The pickling tank rack according to claim 2, characterized in that: The bottom of the movable groove (21) has a buffer groove (23), a buffer plate (24) is connected to the buffer groove (23), the bottom surface of the buffer plate (24) has a buffer rod extending into the buffer groove (23), and a buffer spring (25) is sleeved on the outer side of the buffer rod.

8. The pickling tank rack according to claim 1, characterized in that: The material rack (1) comprises a first connecting frame (11) connected to the overhead crane and a second connecting frame (12) connected to the workpiece; a plurality of sliding rods (13) extending in a vertical direction are connected between the first connecting frame (11) and the second connecting frame (12); the length of the sliding rods (13) is greater than the height of the material rack support (2); and a limiting frame (14) is connected to the sliding rods (13) so that the limiting frame (14) moves along the sliding rods (13).

9. The pickling tank rack according to claim 8, characterized in that: The limit frame (14) has a sliding groove on it that cooperates with the sliding rod (13), and the inner side wall of the sliding groove is formed with a plurality of lubricating oil grooves, and the axial directions of two adjacent lubricating oil grooves form a "V" shape.

10. The pickling tank rack according to claim 9, characterized in that: The material rack support (2) has a height adjustment device.

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