Long-acting hydraulic control belleville spring clamping device

Abstract

The invention discloses a long-acting hydraulic control belleville spring clamping device. The device comprises a hydraulic control part, a pressing head and a pressing head guide box part, the hydraulic control part is communicated with the presser part through a hydraulic oil pipe, and the pressing head is located in the pressing head guide box part. Wherein the hydraulic control part comprises a hydraulic oil cylinder, a hydraulic oil pipe, a pressure sensor, a display, a nut and a gasket; the pressing device part comprises a butterfly-shaped disc spring, an end cover, a lug ring, a clamping head, a pressing device base, a pressing device rear support, a pressing device shell, a pressing head guide box, a support steel pin and a guide rod. According to the patent product, the design of the multi-piece belleville spring and the hydraulic control spring is innovatively adopted, the problem that in the long-acting clamping state of the clamping head, hydraulic control is not needed for long-term pressurization is effectively solved, meanwhile, a hydraulic control system is additionally arranged, the clamping state of the belleville spring is unlocked, and free movement of equipment is achieved.

Description

Technical Field

[0001] This invention relates to the field of industrial production, and more specifically to a long-lasting hydraulically controlled butterfly spring clamping device. Background Technology

[0002] Currently, in the industrial production field, disc springs, with their unique advantages of high energy density per unit volume, high stiffness, and compact structure, have become an indispensable core elastic element in clamping, locking, and sealing scenarios, and are widely used in metallurgical equipment, engineering machinery, and many other fields. However, existing disc spring clamping devices have gradually revealed several technical bottlenecks in practical use. From a control perspective, traditional devices mostly rely on mechanical bolt pre-tightening and manual adjustment to achieve clamping actions, which are not only cumbersome to operate and have a slow response, but also make it difficult to achieve precise control of the clamping force and remote automated control.

[0003] Against this backdrop, the development of a disc spring clamping device that combines long-term stable clamping, precise hydraulic control, strong environmental adaptability, and structural versatility is urgently needed in the current industrial equipment field. This is achieved by optimizing the synergistic driving mechanism of hydraulics and disc springs, improving materials and surface treatment processes, and integrating precise control and status monitoring functions. This addresses the technical pain points of existing devices, such as clamping force attenuation, short lifespan, insufficient control accuracy, and poor environmental adaptability. It is of great significance for promoting the technological upgrading and efficiency improvement of high-end manufacturing. Summary of the Invention

[0004] Therefore, based on the above, the present invention provides a long-lasting hydraulically controlled butterfly spring clamping device. This device relies on a hydraulic climber for the construction of pier column formwork, central beam formwork, and cap beam formwork in a project under construction. During the construction of pier columns, central beams, and cap beams, the hydraulic climber automatically climbs from the bottom to the construction position. Depending on the construction period requirements, the climber needs to be fixed in the corresponding position for a short period of about 3 to 5 days and a long period of about 10 to 15 days. The clamping force during the climb and the long-lasting clamping force during the fixing are calculated with reference to the friction coefficient of the pier body.

[0005] This invention is achieved by employing a "multi-plate disc spring + hydraulically controlled spring" design, effectively solving the problem of the clamping head not requiring long-term hydraulic pressurization for extended clamping. Simultaneously, the addition of a hydraulic control system unlocks the disc spring clamping state, allowing for free movement of the equipment. Since the climbing device's operating platform needs to move up and down during the construction of pier column formwork, central beam formwork, and cap beam formwork, and is in a prolonged clamping state during construction, this method proposes a long-lasting hydraulically controlled disc spring clamping device. This solves the problem of clamping force not decreasing during prolonged clamping and eliminates the risk of sudden failure. Furthermore, the hydraulic control system works in conjunction with this design to address the issue of long-lasting clamping affecting up and down movement. Moreover, the production and manufacturing costs of this clamping device are economical.

[0006] The present invention is implemented as follows: a long-lasting hydraulically controlled butterfly spring clamping device, which comprises a hydraulic control part, a clamping head and a clamping head guide box part; the hydraulic control part and the clamping part are connected via hydraulic oil pipes, and the clamping head is located in the clamping head guide box part.

[0007] Furthermore, the hydraulic control section includes a hydraulic disc spring cylinder (M1), a hydraulic oil pipe (M2), a bolt (M3), and a clamp (M4), which are used to supply pressure to the clamping head to ensure the extension and retraction of the disc spring; the hydraulic disc spring cylinder (M1) is connected to the clamping device section via the hydraulic oil pipe (M2).

[0008] Furthermore, the clamping device includes a hydraulic spring hinge (N1), a clamping head (N2), a rubber retaining ring (N3), a friction rubber sheet (N4), a pressure sensor (N5), a hydraulically controlled disc spring (N6), a nut (N7), a D9 washer (N8), an M8 hexagonal socket head cap screw (N9), a D13 washer (N10), and an M12 hexagonal socket head cap screw (N11); the lower end of the pressure sensor (N5) is a hydraulically controlled disc spring (N6). The lower end of (N6) is a clamping head (N2). The hydraulic spring hinge (N1) is connected to the pressure sensor (N5) through an M8 hexagonal head screw (N9). The upper end of the M8 hexagonal head screw (N9) is locked by a nut (N7) and a D9 washer (N8). A friction rubber sheet (N4) is set at the bottom of the clamping head (N2). A rubber retaining ring (N3) is set between the two and connected by a D13 washer (N10) and an M12 hexagonal head screw (N11).

[0009] Furthermore, the clamping head guide box includes a first sealing plate (K1), a second sealing plate (K2), and an inner pad plate (K3); the various structures are connected by bolts and screws.

[0010] Furthermore, the hydraulically controlled disc spring (N6) of the clamping part comprises a cylinder (N6.1), an end cap (N6.2), a guide shaft (N6.3), and a disc spring (N6.4), wherein the disc spring (N6.4) is composed of individual disc springs stacked together to form a pair.

[0011] Furthermore, referring to the specifications (GB / T 1972.1-2023 and GB / T 1972.2-2023), elastic element A-112-II was selected. When the single piece releases for 0.6h, it generates a pressure F=35.28kN. When two pieces are stacked together, the stroke distance S=1.5mm, and the total pressure F=70.56kN, which meets the design pressure requirements. The safety pressure factor is 1.28.

[0012] Furthermore, referring to the specifications (GB / T 1972.1-2023 and GB / T 1972.2-2023), the combined disc spring uses 12 sets of elements, totaling 24 pieces, with a single piece deformation distance of 2.5mm, a deformation coefficient of 0.9, and a total deformation stroke of 27mm, which meets the total stroke requirements of this design.

[0013] Furthermore, based on the required clamping force of 70.56 kN, clamping stroke of 1.5 mm, and total deformation stroke of 27 mm, the disc spring specifications are selected, and the cylinder body (N6.1) length, end cap (N6.2) sealing method, guide shaft (N6.3), disc spring (N6.4), hydraulic disc spring cylinder (M1), hydraulic oil pipe (M2), and other combination forms are designed; the internal fixing form is determined to be hydraulic spring lug (N1), clamping head (N2), rubber fixing ring (N3), friction rubber sheet (N4), pressure sensor (N5), and clamping head guide box; the external fixing form depends on the usage conditions and there are many situations, which will not be elaborated.

[0014] Furthermore, the long-lasting hydraulically controlled disc spring clamping device operates as follows: This hydraulically controlled disc spring clamping device includes two operating states, as detailed below: Working state 1: After the device is installed, if the hydraulic control part is not pressurized, the disc spring (referred to as disc spring) is in the released state. At this time, the disc spring can provide a stable clamping force and simultaneously provide the extension stroke, ensuring that the device always maintains a long-term clamping state throughout the process when the hydraulic control part is not pressurized, thus ensuring clamping reliability. Working state two: When it is necessary to release the clamp, the hydraulic control part can provide the corresponding pressure according to the actual needs. This pressure forces the disc spring to compress and deform. At the same time, the cylinder, end cover, clamping head and other components contract synchronously under the action of pressure reaction force, thereby canceling the clamping state of the device and switching the device to a free-moving state to meet the needs of subsequent operations. The long-life hydraulically controlled disc spring clamping device described in this method will have its processing quality strictly controlled during the manufacturing process; the main structural dimensional error will be 0~+0.5mm; the machined surface of the clamping head (N2) and the guide box of the pressure head will be Ra=6.3μm; all machined parts will be chamfered at 45°; unless otherwise specified in the drawings, the height of the remaining weld bead will be 0.7 times the thickness of the adjacent thin plate; other welds must meet the secondary weld standard; the flatness of the steel plate should be controlled within L / 1000mm; the structure should meet the requirements of the current "Code for Construction and Acceptance of Steel Structures".

[0015] The clamping device of this invention integrates the hydraulic control system, the clamping unit, and the clamping head guide box into a single unit. This allows the clamping unit to provide clamping force when the elastic element is released, and during hydraulic control, the spring contracts, allowing the device to move freely. Furthermore, the installation and arrangement of each structural component are as follows: Figure 1 As shown.

[0016] This invention discloses a long-lasting hydraulically controlled disc spring clamping device. The device comprises a hydraulic control section, a clamping head, and a clamping head guide box. The hydraulic control section is connected to the clamping head section via hydraulic oil pipes, and the clamping head is located within the clamping head guide box. The hydraulic control section includes a hydraulic cylinder, hydraulic oil pipes, a pressure sensor, a display, a nut, and washers. The clamping head section includes a disc spring, an end cap, an ear ring, a clamping head, a clamping head base, a clamping head rear support, a clamping head housing, a clamping head guide box, a support pin, and a guide rod. This patented product innovatively adopts a "multi-plate disc spring + hydraulically controlled spring" design, effectively solving the problem of the clamping head not requiring long-term hydraulic pressurization in a long-lasting clamping state. Simultaneously, the addition of a hydraulic control system unlocks the disc spring clamping state, allowing for free movement of the equipment. Because the climbing platform needs to move up and down during the construction of pier column formwork, intermediate beam formwork, and cap beam formwork, and is in a state of prolonged clamping during construction, this method proposes a long-lasting hydraulically controlled butterfly spring clamping device. This solves the problem that the clamping force will not decrease during long-term clamping and there is no risk of sudden failure. Furthermore, through the cooperation of the hydraulic control system, the problem of long-lasting clamping affecting up and down movement is solved. At the same time, the production and manufacturing cost of this clamping device is economical. The long-lasting hydraulically controlled butterfly spring clamping device involved in this method is manufactured using factory machining and welding processes. The various structural layers are connected by bolts and welding, resulting in a high degree of assembly, a simple and aesthetically pleasing appearance, and strong practicality. This patented product includes, but is not limited to, related structural devices and methods. The application of this patent in construction has good economic and social benefits and has high promotional value.

[0017] In summary, the long-life hydraulically controlled disc spring clamping device according to the present invention has the following advantages: 1. Wide applicability: This device can be used not only in this equipment, but also in many other fields such as metallurgical equipment, engineering machinery, pipeline systems, machine tool processing, and wind power equipment.

[0018] 2. High performance: This device effectively solves the problem that the clamping head does not require long-term hydraulic pressurization in a long-term clamping state, and at the same time unlocks the disc spring clamping state, greatly reducing the risk of failure.

[0019] 3. High economic, social, and practical value: The clamping methods and structures involved in this device have good economic value, application value, social value, and practical value. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the clamping device composition of this invention application; Figure 2 This is a schematic diagram of the hydraulically controlled disc spring composition of this invention application; Figure 3 This is a schematic diagram of the clamping head guide box portion of this invention application; Figure 4 This is a schematic diagram of the friction rubber sheet of this invention application; Figure 5 This is a schematic diagram of the disc spring in this invention application; Figure 6 This is a force curve diagram of the disc spring in this invention application; Figure 7 This is a schematic diagram of the stroke of the disc spring according to the cylinder pressure in this invention application; Figure 8 This is a schematic diagram of the clamping head of this invention application. Detailed Implementation

[0021] The following will be combined with the appendix Figures 1-8 This invention will be described in detail, and the design schemes in the embodiments of this invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0022] This invention provides a long-lasting hydraulically controlled disc spring clamping device, such as... Figures 1-8 As shown, this can be implemented as follows: A long-lasting hydraulically controlled disc spring clamping device is constructed, employing a "multi-plate disc spring + hydraulically controlled spring" design. This effectively solves the problem of the clamping head not requiring long-term hydraulic pressurization during long-term clamping. Simultaneously, a hydraulic control system is added to unlock the disc spring clamping state, allowing for free movement of the equipment. Since the climbing device's operating platform needs to move up and down during the construction of pier column formwork, intermediate beam formwork, and cap beam formwork, and is in a long-term clamping state during construction, this method proposes a long-lasting hydraulically controlled disc spring clamping device. This solves the problem that the clamping force will not decrease during long-term clamping and eliminates the risk of sudden failure. Furthermore, the hydraulic control system works in conjunction with this device to address the issue of long-term clamping affecting up and down movement.

[0023] In this embodiment, the present invention provides a long-lasting hydraulically controlled butterfly spring clamping device, which comprises a hydraulic control part, a clamping head, and a clamping head guide box part; the hydraulic control part and the clamping part are connected via hydraulic oil pipes, and the clamping head is located inside the clamping head guide box part.

[0024] During implementation, the hydraulic control part includes a hydraulic disc spring cylinder M1, a hydraulic oil pipe M2, a bolt M3, and a clamp M4, which are used to supply pressure to the clamping head to ensure the extension and retraction of the disc spring; the hydraulic disc spring cylinder M1 is connected to the clamping part via the hydraulic oil pipe M2.

[0025] In implementation, the clamping device includes a hydraulic spring hinge N1, a clamping head N2, a rubber retaining ring N3, a friction rubber sheet N4, a pressure sensor N5, a hydraulically controlled disc spring N6, a nut N7, a D9 washer N8, an M8 hexagonal head screw N9, a D13 washer N10, and an M12 hexagonal head screw N11. The lower end of the pressure sensor N5 is the hydraulically controlled disc spring N6, and the lower end of the hydraulically controlled disc spring N6 is the clamping head N2. The hydraulic spring hinge N1 is connected to the pressure sensor N5 through the M8 hexagonal head screw N9. The upper end of the M8 hexagonal head screw N9 is locked by the nut N7 and the D9 washer N8. The bottom of the clamping head N2 is equipped with a friction rubber sheet N4, and a rubber retaining ring N3 is placed between the two, which is connected by the D13 washer N10 and the M12 hexagonal head screw N11.

[0026] During implementation, the clamping head guide box includes a first sealing plate K1, a second sealing plate K2, and an inner pad K3; the various structures can be connected by bolts or screws.

[0027] In practice, the hydraulically controlled disc spring N6 of the clamping device consists of a cylinder body N6.1, an end cap N6.2, a guide shaft N6.3, and a disc spring N6.4, wherein the disc spring N6.4 is composed of individual disc springs stacked together to form a pair.

[0028] During implementation, referring to the specifications (GB / T 1972.1-2023 and GB / T 1972.2-2023), elastic element A-112-II was selected. When the release stroke of a single piece is 0.6h, the pressure generated is F=35.28kN. When two pieces are stacked together, the stroke distance S=1.5mm, and the total pressure F=70.56kN, which meets the design pressure requirements and the safety pressure factor is 1.28.

[0029] During implementation, in accordance with the specifications (GB / T 1972.1-2023 and GB / T 1972.2-2023), the combined disc springs use 12 sets of components, totaling 24 pieces, with a single piece deformation distance of 2.5mm, a deformation coefficient of 0.9, and a total deformation stroke of 27mm, meeting the total stroke requirements of this design.

[0030] A long-lasting hydraulically controlled disc spring clamping device is designed based on the required clamping force of 70.56 kN, clamping stroke of 1.5 mm, and total deformation stroke of 27 mm. The disc spring specifications are selected, and the design includes the cylinder body length N6.1, the end cap sealing method N6.2, the guide shaft N6.3, the disc spring N6.4, and the hydraulic disc spring cylinder M1 and hydraulic oil pipe M2. The internal fixing method consists of a hydraulic spring lug N1, a clamping head N2, a rubber retaining ring N3, a friction rubber sheet N4, a pressure sensor N5, and a clamping head guide box. The external fixing method varies depending on the usage conditions and will not be elaborated upon.

[0031] Its working method is as follows (e.g.) Figure 7 As shown): This hydraulically controlled disc spring clamping device includes two working states, as detailed below: Working state 1: After the device is installed, if the hydraulic control part is not pressurized, the disc spring (referred to as disc spring) is in the released state. At this time, the disc spring can provide a stable clamping force and simultaneously provide the extension stroke, ensuring that the device always maintains a long-term clamping state throughout the process when the hydraulic control part is not pressurized, thus ensuring clamping reliability. Working state two: When it is necessary to release the clamp, the hydraulic control part can provide the corresponding pressure according to the actual needs. This pressure forces the disc spring to compress and deform. At the same time, the cylinder, end cover, clamping head and other components contract synchronously under the action of pressure reaction force, thereby canceling the clamping state of the device and switching the device to a free-moving state to meet the needs of subsequent operations. The long-life hydraulically controlled disc spring clamping device described in this method will have its processing quality strictly controlled during the manufacturing process; the main structural dimensional error will be 0~+0.5mm; the machined surface of the clamping head (N2) and the guide box of the pressure head will be Ra=6.3μm; all machined parts will be chamfered at 45°; unless otherwise specified in the drawings, the height of the remaining weld bead will be 0.7 times the thickness of the adjacent thin plate; other welds must meet the secondary weld standard; the flatness of the steel plate should be controlled within L / 1000mm; the structure should meet the requirements of the current "Code for Construction and Acceptance of Steel Structures".

[0032] In summary, the clamping devices described in this method all consist of a hydraulic control system, a clamping unit, and a clamping head guide box.

[0033] The long-life hydraulically controlled disc spring clamping device described in this method will have its processing quality strictly controlled during manufacturing. The main structural dimensional error is 0~+0.5mm; the machined surface of the clamping head (N2) and pressure head guide box is Ra=6.3μm; all machined parts are chamfered at 45°; unless otherwise specified in the drawings, the height of all weld bead heights is 0.7 times the thickness of the adjacent thin plate; other welds must meet the Class II weld standard; the flatness of the steel plate should be controlled within L / 1000mm; the structure should meet the requirements of the current "Code for Construction and Acceptance of Steel Structures".

[0034] This invention discloses a long-lasting hydraulically controlled disc spring clamping device, employing a "multi-plate disc spring + hydraulically controlled spring" design. This effectively solves the problem of the clamping head not requiring long-term hydraulic pressurization during long-term clamping. Simultaneously, the addition of a hydraulic control system unlocks the disc spring clamping state, allowing for free movement of the equipment. This reduces the safety risk of clamping device failure during prolonged clamping and offers lower manufacturing costs, resulting in good economic efficiency. The clamping device involved in this method is manufactured in a factory, with structural components connected by welding and bolts, exhibiting a high degree of assembly, a simple and aesthetically pleasing appearance, and strong practicality. The application of this invention in bridge construction and industrial production demonstrates significant economic and social benefits, making it highly valuable for widespread application. Through its implementation in ongoing projects, this patented product has proven to offer substantial economic and social benefits.

[0035] The above description of the disclosed embodiments enables those skilled in the art and across art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A long-lasting hydraulically controlled disc spring clamping device, characterized in that: The device consists of a hydraulic control section, a clamping head, and a clamping head guide box. The hydraulic control section is connected to the clamping head section via hydraulic oil pipes, and the clamping head is located inside the clamping head guide box.

2. The long-lasting hydraulically controlled disc spring clamping device according to claim 1, characterized in that: The hydraulic control section includes a hydraulic disc spring cylinder (M1), a hydraulic oil pipe (M2), a bolt (M3), and a clamp (M4), which are used to supply pressure to the clamping head to ensure the extension and retraction of the disc spring. The hydraulic disc spring cylinder (M1) is connected to the clamping device section via the hydraulic oil pipe (M2).

3. The long-lasting hydraulically controlled disc spring clamping device according to claim 1, characterized in that: The clamping unit includes a hydraulic spring hinge (N1), clamping head (N2), rubber retaining ring (N3), friction rubber sheet (N4), pressure sensor (N5), hydraulically controlled disc spring (N6), nut (N7), D9 washer (N8), M8 socket head cap screw (N9), D13 washer (N10), M12 socket head cap screw (N11); the lower end of the pressure sensor (N5) is a hydraulically controlled disc spring (N6). The lower end of the clamping head (N2) is a clamping head. The hydraulic spring hinge (N1) is connected to the pressure sensor (N5) through an M8 hexagonal head screw (N9). The upper end of the M8 hexagonal head screw (N9) is locked by a nut (N7) and a D9 washer (N8). A friction rubber sheet (N4) is set at the bottom of the clamping head (N2). A rubber retaining ring (N3) is set between the two and connected by a D13 washer (N10) and an M12 hexagonal head screw (N11).

4. The long-lasting hydraulically controlled disc spring clamping device according to claim 1, characterized in that: The clamping head guide box includes a first sealing plate (K1), a second sealing plate (K2), and an inner pad plate (K3).

5. The long-lasting hydraulically controlled disc spring clamping device according to claim 1, characterized in that: The hydraulically controlled disc spring (N6) of the clamping unit consists of a cylinder (N6.1), an end cap (N6.2), a guide shaft (N6.3), and a disc spring (N6.4), wherein the disc spring (N6.4) is composed of individual disc springs stacked together to form a pair.

6. The long-lasting hydraulically controlled disc spring clamping device according to claim 1, characterized in that: Using a two-piece stacked configuration, the stroke distance S = 1.5 mm, the total pressure F = 70.56 kN, which meets the design pressure requirements and the safety pressure factor is 1.

28.

7. The long-lasting hydraulically controlled disc spring clamping device according to claim 1, characterized in that: The combined disc spring uses 12 sets of elements, totaling 24 pieces. The deformation distance of a single piece is 2.5mm, the deformation coefficient is 0.9, and the total deformation stroke meets the requirement of 27mm, which meets the total stroke requirements of this design.

8. The long-lasting hydraulically controlled disc spring clamping device according to claim 1, characterized in that: Based on the required clamping force of 70.56 kN, clamping stroke of 1.5 mm, and total deformation stroke of 27 mm, the disc spring specifications are selected, and the cylinder body (N6.1) length, end cap (N6.2) sealing method, guide shaft (N6.3), disc spring (N6.4), hydraulic disc spring cylinder (M1), hydraulic oil pipe (M2) and other combination forms are designed; the internal fixing form is determined to be hydraulic spring hinge (N1), clamping head (N2), rubber fixing ring (N3), friction rubber sheet (N4), pressure sensor (N5) and clamping head guide box.

9. The long-lasting hydraulically controlled disc spring clamping device according to claim 1, characterized in that: Its working principle is as follows: This hydraulically controlled disc spring clamping device includes two working states, as detailed below: Working state 1: After the device is installed, if the hydraulic control part is not pressurized, the disc spring (referred to as disc spring) is in the released state. At this time, the disc spring can provide a stable clamping force and simultaneously provide the extension stroke, ensuring that the device always maintains a long-term clamping state throughout the process when the hydraulic control part is not pressurized, thus ensuring clamping reliability. Working state two: When it is necessary to release the clamp, the hydraulic control part can provide the corresponding pressure according to the actual needs. This pressure forces the disc spring to compress and deform. At the same time, the cylinder, end cover, clamping head and other components contract synchronously under the action of pressure reaction force, thereby canceling the clamping state of the device and switching the device to a free-moving state to meet the needs of subsequent operations.

Images