Balanced lifting appliance device special for lifting for mounting cathode and anode plate electrolytic bath

Abstract

The utility model provides a special balance lifting appliance device for lifting for mounting a cathode and anode plate electrolytic bath. The special balance lifting appliance device is mainly formed by welding a fixed plate, a lifting plate and two pieces of angle steel, the device is exquisite in design, and the adjustable hoisting holes are formed in the hoisting plate, so that an operator can adjust the position of a hoisting point according to the weight distribution of a hoisted object, the cathode and anode plates can be kept in a horizontal state in the hoisting process, and the parallelism and gap uniformity between the pole plates are effectively ensured. The structure not only improves the safety and the accuracy of hoisting operation, but also remarkably improves the working efficiency and the mounting quality, and is particularly suitable for an electrolytic cell system needing to be frequently disassembled and overhauled. The device is simple, convenient and easy to use, has high adaptability and practicability, and can meet the hoisting requirements of electrolytic cell polar plates of different models.

Description

Technical Field

[0001] The utility model relates to the technical field of hoisting of special equipment, in particular to a special balancing hoisting device for hoisting the installation of anode and cathode plate electrolytic cells. Background Art

[0002] During the chlorine dioxide production process at the pulp mill, chlorine dioxide is produced using the R6 integrated process, and sodium chlorate is produced by electrolysis of sodium chloride. The electrolysis of chlorate requires the use of an electrolytic cell with 14 electrolytic units. Each unit is assembled from plates and a cylinder. The plates are welded together to form a cathode plate, an anode plate, and an intermediate plate. The cathode plates are made of 45 425*400*3mm thick carbon steel plates, and the anode plates are made of 44 425*400*2mm thick titanium plates. The anode plates are coated and have 16 evenly distributed small holes for mounting isolation insulators. The cathode and anode plates are evenly welded to either side of the intermediate plate in a comb-like pattern. The gap between each anode plate is 7mm, and the gap between each cathode plate is 6mm. When assembling the electrolytic cell as a whole, first install the cylinder, and then the anode (cathode) plate of each section needs to be inserted parallel to the gap between the cathode (cathode) plates of the other section to form a "complete" cell body. At the same time, it must be ensured that there is no contact point between the cathode and anode plates that are inserted into each other (according to the theoretical value, the gap between each cathode and anode plate is 2mm), otherwise it will cause a short circuit in the electrolytic cell and cannot be started.

[0003] During the original maintenance and installation, the previous section of the plate was fixed on the foundation, and the side to be assembled was the anode side. The other section of the cathode plate and the intermediate cylinder needed to be installed in coordination with the previous section of the anode plate. Due to the limitations of the on-site environment, it could only be assembled by lifting. The original method was to fix the 1# and 2# lifting holes of the intermediate plate with shackles and then lift and install. Due to the different weights of the cathode plate and the anode plate, the entire plate tilted after lifting and could only be lifted "flat" by manual support. Because everyone had different control of strength, the parallelism between the cathode and anode plates could not be guaranteed when applying force. The anode plate was easily damaged during the insertion process. The insulator installed on the cathode plate that should be used to isolate the plates caused damage and peeling of the cathode plate isolation insulator. The anode plate would deform when squeezed, and the gap between the cathode and anode plates was insufficient or in direct contact. The insulation was lower than 5MΩ and could not meet production requirements. In addition, this installation method had a large workload, high labor intensity, low assembly quality, and low work efficiency.

[0004] It can be seen that the current installation of anode and cathode plates has the following defects:

[0005] Balance issues caused by weight differences: Since the cathode and anode plates are made of different materials, their weights differ. This weight difference makes it difficult to keep the plate assembly level during lifting, increasing the difficulty of operation.

[0006] Instability caused by manual support: In order to correct the tilt of the plate, manual support is required to adjust the plate to a horizontal level. However, due to the inconsistency of personal force control, it is difficult to accurately control the parallelism of the cathode and anode plates, which leads to instability and uncontrollability during the installation process.

[0007] Risk of Insulator Damage: Forcing the anode plates into the installation without proper parallelism can easily damage or remove the isolating insulators on the anode plates. These insulators are crucial for preventing short circuits in the electrolyzer, and damage directly impacts safe operation and production efficiency. The anode plates may deform under the pressure of installation, which can damage the insulators and reduce or eliminate the gap between the anode and cathode plates, leading to the risk of short circuits.

[0008] Inefficient Workflows: Existing installation methods rely heavily on manual intervention, increasing labor intensity and reducing efficiency. Because installation quality is significantly impacted by human factors, overall assembly quality is low, potentially leading to increased rework rates. Short circuit risks and improper operation during installation can pose a threat to personnel safety, while equipment damage can also lead to safety incidents.

[0009] Inspection and maintenance challenges: Unstable installation quality may cause the insulation performance of the electrolytic cell to be lower than the standard (5MΩ), increasing subsequent inspection and maintenance costs. Summary of the Invention

[0010] In order to solve the shortcomings and defects of the above-mentioned prior art, the inventors have improved and designed a special lifting device that is efficient and easy to use and can achieve stable lifting of anode and cathode plates. It does not require multiple people to adjust it together. It has the characteristics of convenience, ease of use and high efficiency. Specifically, the utility model is implemented as follows:

[0011] A special balancing sling device for hoisting the installation of anode and cathode plate electrolytic cells includes a pair of sling bodies and suspension accessories. The structure of the sling body includes: a top sling hole and a plurality of fixing holes are provided on the top of the main sling plate, which are used for fitting and mounting with the plate surface of the intermediate plate, and are installed on the intermediate plate by passing bolts through the mounting fixing holes; the sling arm is fixedly installed on the back of the main sling plate, extending horizontally to the other side perpendicular to the plate surface of the main sling plate; and a plurality of cross arm sling holes are provided, which are used to provide sling holes for installing suspension accessories.

[0012] Furthermore, the suspension accessories include: a lifting lock, which is provided with a screw hole, which can cooperate with the bolt to pass through the screw hole and the cross arm lifting hole on the lifting arm to install the lifting lock on the cross arm lifting hole; or can cooperate with the bolt to pass through the screw hole and the top lifting hole to install the lifting lock on the top lifting hole; a lifting strap, connected to the lifting lock, for connecting to the crane hook.

[0013] Furthermore, the lifting lock has a strip-shaped structure and an H-shaped cross-section, and screw holes and pin holes are respectively provided on the end faces of both ends, and a pin is installed between the pin holes. The end of the lifting strap can pass around the pin to form a firm connection; the socket width and depth of the lifting lock enable it to be installed on the main lifting plate or the lifting arm, aligned with the top lifting hole or the cross arm lifting hole.

[0014] Furthermore, the sling body and the lifting lock are used in pairs, each forming a pair, and the two sling bodies are mirror-symmetrical structures to each other and are respectively installed on the two ends of the top edge of the middle plate.

[0015] Furthermore, the main hanging plate is an equilateral angle steel, including two right-angled sides and one oblique side. There are three fixing holes, and the position of at least one fixing hole is adapted to the position specifications of the corresponding hanging hole on the middle plate.

[0016] Furthermore, the bottom of the outer end of the lifting arm is provided with a beveled edge, and the number of the cross arm lifting holes is at least three and they are distributed in the transverse direction.

[0017] Furthermore, two rows of fixing holes are provided on the boom, and the fixing holes in the two rows are staggered with each other in the vertical direction.

[0018] The working principle of this utility model is introduced:

[0019] The main hanger plate is the core part of the sling device. The main hanger plate is designed to fit the top corner position of the middle plate. It is firmly connected to the middle plate located in the middle of the cathode and anode plates through fixing holes and bolts, forming a force fulcrum for lifting. It is installed at both ends to ensure that the entire sling system forms two lifting points during the lifting process, which is convenient for installing the sling and facilitating the stability when used with the lifting mechanism, and provides a support base for the boom. The design of the boom is also the key. The boom extends outward for a certain length perpendicular to the main hanger plate. The cross arm hanging holes on it are used to install the lifting lock and sling, so that the connection between the sling and the crane can be achieved. Since the distribution of the cross arm hanging holes is parallel to the length of the entire electrode plate, it is necessary to ensure that the cross arm is facing the side where the center of gravity is located during installation. For the specific hole position of the cross arm hanging hole, it is necessary to rotate it in conjunction with the crane trial lifting process to find a hole that is as close to the same vertical line as the center of gravity as possible, and then select this cross arm hanging hole as the installation hoisting hole position. The H-shaped cross-section of the lifting lock features screw and pin holes, providing a secure lifting point for use with a latch and sling. The sling is connected to the lifting lock by bypassing the latch. This design not only simplifies the sling installation process but also enhances stability during lifting and reduces the risk of the sling slipping. The lifting support point is aligned with the center of gravity on the same vertical plane, achieving horizontal lifting of the cathode and anode assembly. The cross-arm lifting holes on the main lifting plate are designed to accommodate cathode and anode plates of varying sizes and weights, adjusting the center of gravity. This design allows for multiple installation locations to accommodate different lifting requirements and ensure balanced lifting of the plates. Symmetrical lifting fixture structure: The two sets of lifting fixtures are mirror images of each other and are installed at either end of the center plate, ensuring symmetry and balance during lifting. The installation orientation of the lifting fixtures can be flexibly adjusted according to the center of gravity of the target, enabling flexible application.

[0020] Beneficial technical effects of the utility model:

[0021] (1) Balanced lifting: Through the special boom structure of the hoist body, the suspension point can be offset from the middle plate in the horizontal direction, so that it is consistent with the direction of the center of gravity, thereby achieving horizontal and stable lifting. It is not easy to deflect after lifting. The flexible lifting point selection ensures that the anode and cathode plates can remain horizontal during lifting and will not tilt even if the weight distribution is uneven.

[0022] (2) Reduce the risk of damage: Compared with traditional lifting methods, the balance during lifting is improved, which facilitates installation and alignment, avoids abnormal contact between the positive and negative plates, protects fragile components such as isolation insulators, and reduces the risk of damage.

[0023] (3) Improve work efficiency: Through the use of standardized lifting processes and special tools, the need for manpower adjustment is reduced, and there is no need for manual support and lifting, which reduces labor intensity and improves installation efficiency and quality. By ensuring balance and stability during the lifting process, the safety of the operation is improved and the possibility of operational errors is reduced.

[0024] (4) Strong adaptability and wide application range: The multiple rows of staggered fixing holes on the boom and the multiple position options of the cross arm lifting holes enable the device to be flexibly adjusted according to the different sizes, weights and center of gravity positions of the anode and cathode plates, meeting the lifting requirements of various specifications and improving the versatility and practicality of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the tilted state of the anode and cathode plates during hoisting in the prior art;

[0026] Figure 2 This is a schematic diagram of the front three-dimensional structure of the main hanging plate provided by the utility model;

[0027] Figure 3 This is a schematic diagram of the back three-dimensional structure of the main hanging plate provided by the utility model;

[0028] Figure 4 Schematic diagram of the three-dimensional structure of a pair of main hanging plates;

[0029] Figure 5 This is a schematic diagram of the hoisting installation structure when installing a main hanging plate and a corner of the middle plate;

[0030] Figure 6 Schematic diagram of the installation structure for installing the lifting lock on the main hanging plate;

[0031] Figure 7 This is a schematic diagram of the use state of the lifting balance lifting device specially used for installing the anode and cathode plate electrolytic cell of the utility model;

[0032] Among them: 1-main lifting plate, 2-limit baffle, 3-top lifting hole, 4-fixing hole, 5-middle plate, 6-lifting arm, 7-cross arm lifting hole, 8-lifting lock, 9-lifting strap. DETAILED DESCRIPTION

[0033] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.

[0034] Example 1: This example provides a hoisting and balancing sling device specifically for installing anode and cathode electrolytic cells. It aims to solve the problems of hoisting imbalance, low efficiency, and damage risk caused by the weight difference between the cathode and cathode plates in traditional installation methods. Its main structural components include:

[0035] The main hanger plate 1 is the core structural component of the sling, which has the function of bearing the entire lifting weight. A top lifting hole 3 and several fixing holes 4 are provided on the top. The top lifting hole 3 provides a center point so that the sling body and the connected electrolytic cell can be lifted smoothly during the lifting process. The fixing hole 4 is used to allow the main hanger plate 1 to be fixed together with the middle plate 5 by bolts. Mounting holes are provided at the four corners of the middle plate 5 to ensure that the structure is stable and firm. The boom 6 extends vertically from the back of the main hanger plate 1. Its function is to extend the suspension installation point of the main hanger plate 1 horizontally, and to achieve the coincidence of the lifting position and the center of gravity position through the cross arm lifting hole 7 of the lifting point. The number of cross arm lifting holes 7 is not unique. The purpose is to meet different lifting requirements and adjust according to different center of gravity positions. It can also be used in combination with suspension accessories to realize the installation of the sling 9. The suspension accessories primarily consist of a lifting lock 8, a strip-like design with an H-shaped cross-section and slots at each end. It is inserted and secured via bolts or pins to either the top lifting hole 3 or the cross-arm lifting hole 7 on the main lifting plate 1. This design accommodates both the cross-arm lifting hole 7 in the horizontal position and the top lifting hole 3 in the vertical position, depending on the overall center of gravity of the cathode and anode plates. A lifting strap 9 is directly connected to the lifting lock 8, which is then hooked onto the lifting strap 9 by the crane hook to complete the lifting operation. The lifting strap 9 should be selected to ensure sufficient strength to support the expected maximum load. The lifting fixture and lifting lock 8 are used in conjunction with each other. Each set includes a pair of lifting fixtures and a pair of lifting locks 8. The two lifting fixtures are designed as mirror images, meaning they have the same physical dimensions but opposite shapes to ensure proper alignment. They are mounted at either end of the top edge of the intermediate plate 5 to ensure balance during lifting. The lifting lock 8 has an H-shaped cross-section. Screw holes and pin holes are provided on each end face. The screw holes allow the lock head to be bolted to the cross arm lifting hole 7 or the top lifting hole 3. A latch is installed between the pin holes, allowing a sling rope or strap 9 to pass through and around the latch to form a secure connection. The width and depth of the latch are designed to fit on the main suspension plate 1 or suspension arm 6 and align with the corresponding lifting hole.

[0036] Preferably, a limiting baffle 2 is also provided on the main hanger plate 1, with two of them being fixedly mounted on the top and outer edges of the main hanger plate 1 respectively, extending to one side perpendicular to the plate surface of the main hanger plate 1 and forming a right-angle turning structure, and the extension length matches the thickness of the middle plate 5, and is used to half-cover the middle plate 5 from the top and side edges respectively; the function of the limiting baffle 2 is to form a baffle wrapping structure from the outer side of the edge of the middle plate 5 to the inner surface of the other side, which is used to limit the tightness between the main hanger plate 1 and the middle plate 5 and increase the overall strength, and can also provide an in-place limiting function during installation, forming rapid assembly, and providing support force to the outer side of the middle plate 5 during the lifting process, further improving the supporting strength of the main hanger plate 1. In this embodiment, the main suspension plate 1 is 13 mm thick, the suspension arm 6 is 16 mm thick, and the limit stop 2 is formed by bending and welding a 56*38*3 mm steel bar guard. The fixing hole 4 has a diameter of 16 mm. The top suspension hole has a diameter of 325 mm, and the cross arm suspension hole has a diameter of 722 mm. Depending on the electrolytic cell model and the center of gravity deviation of the cathode and anode plates, the appropriate hole locations for installing the suspension accessories should be selected according to actual needs.

[0037] Preferably, main hanging plate 1 is made of equilateral angle steel, comprising two right-angled sides and one beveled side. There are three fixing holes 4, with at least one of these holes being positioned to match the corresponding hanging hole on intermediate plate 5. The beveled sides provide more stable support and enhance structural strength. The outer bottom end of hanging arm 6 is provided with a beveled side, and there are at least three cross-arm hanging holes 7, distributed transversely.

[0038] Preferably, the boom 6 is provided with two rows of fixing holes 4, with the fixing holes 4 in the two rows being staggered in the vertical direction. In this case, the boom 6 can be appropriately extended in length, width, and thickness to accommodate the two rows of holes, which are staggered, thereby increasing the accuracy of adjusting the appropriate lifting point.

[0039] The use of the special balancing hoist device of this embodiment can effectively ensure that the electrolytic cell plates are in a horizontal state after being lifted, ensure the parallelism of the cathode and anode plates during assembly, and will not cause deformation of the plates and damage to the insulators. It also has high installation efficiency and ensures that the gap between the cathode and anode plates is within the standard range.

[0040] The following is an analysis of the various functional components and their functions: It should be understood that the above specific embodiments of the present invention are merely illustrative or explanations of the principles of the present invention and do not constitute limitations on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included within the scope of protection of the present invention. In addition, the claims appended to the present invention are intended to cover all variations and modifications that fall within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A special balanced lifting device for the installation of anode and cathode electrolytic cells, comprising a pair of lifting bodies and suspension accessories, characterized in that : The structure of the sling body includes: The main hanging plate (1) is provided with a top hanging hole (3) and a plurality of fixing holes (4) on the top, and is used for fitting with the plate surface of the middle plate (5) and being installed on the middle plate (5) by means of bolts passing through the fixing holes (4); Two limit baffles (2) are fixedly mounted on the top edge and the outer side edge of the main hanging plate (1), extending perpendicularly to the plate surface of the main hanging plate (1) to one side and forming a right-angle turning structure, with the extension length matching the thickness of the middle plate (5), and used to half-cover the middle plate (5) from the top edge and the side edge of the middle plate (5); The suspension arm (6) is fixedly mounted on the back of the main suspension plate (1) and extends transversely to the other side perpendicular to the plate surface of the main suspension plate (1); and is provided with a plurality of cross arm suspension holes (7) for providing suspension holes for installing suspension accessories.

2. The special balancing sling device for lifting according to claim 1, characterized in that The suspension accessories include: The lifting lock head (8) is provided with a screw hole, which can be matched with a bolt passing through the screw hole and the cross arm lifting hole (7) on the lifting arm (6) to install the lifting lock head (8) on the cross arm lifting hole (7); or can be matched with a bolt passing through the screw hole and the top lifting hole (3) to install the lifting lock head (8) on the top lifting hole (3); The sling (9) is connected to the lifting lock (8) and is used for connecting to the crane hook.

3. The special balancing sling device for lifting according to claim 2, characterized in that The hoisting lock (8) is in a strip-shaped structure with an H-shaped cross-section, and has screw holes and pin holes respectively provided on the end faces at both ends, with a latch installed between the pin holes, and the end of the sling (9) can pass around the latch to form a firm connection; the socket width and depth of the hoisting lock (8) enable it to be installed on the main hanging plate (1) or the hanging arm (6) and aligned with the top hanging hole (3) or the cross arm hanging hole (7).

4. The special balancing sling device for lifting according to claim 2, characterized in that The sling body and the lifting lock (8) are used in pairs, each forming a pair, and the two sling bodies are mirror-symmetrical structures and are respectively installed on the two ends of the top edge of the middle plate (5).

5. The special balancing sling device for lifting according to claim 4, characterized in that The main hanging plate (1) is an equilateral angle steel, including two right-angled sides and one oblique side. There are three fixing holes (4), and the position of at least one fixing hole (4) is adapted to the position specifications of the corresponding hanging hole on the middle plate (5).

6. The special balancing sling device for lifting according to claim 1, characterized in that The bottom of the outer end of the lifting arm (6) is provided with a bevel, and the number of the cross arm lifting holes (7) is at least three and they are distributed in the transverse direction.

7. The special balancing sling device for lifting according to claim 1, characterized in that Two rows of fixing holes (4) are provided on the boom (6), and the fixing holes (4) in the two rows are arranged in a staggered distribution in the vertical direction.

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