A movable beam guide device for a forging hydraulic press

Abstract

The utility model discloses a kind of movable beam guiding device of forging hydraulic press, including cylindrical nut, stud bolt, gasket group, cushion block, bottom plate, screw, adjusting wedge, guide plate, cylindrical nut is placed in nut hole outside movable beam square sleeve side face;Stud bolt one end is connected with cylindrical nut thread, another end is sequentially equipped gasket group, cushion block after thread connection fastening nut;Bottom plate is fixed on movable beam by screw, bottom plate has a slope, slope is towards column side;Adjusting wedge is provided with a notch, notch cooperates with cushion block, adjusting wedge also has a slope, the slope of adjusting wedge and the slope of bottom plate contact, adjusting the thickness of gasket group can make adjusting wedge and bottom plate produce relative sliding;Guide plate is installed on the outside of adjusting wedge by bolt, and it is corresponding with the guide plate outside column. The utility model improves guiding precision, also improves anti-unbalance load capacity, can prevent structural damage, reduce operating loss, prolong the service life of equipment.

Description

Technical Field

[0001] This utility model belongs to the field of movable crossbeam guiding technology, and in particular relates to a movable crossbeam guiding device for a forging hydraulic press. Background Technology

[0002] In recent years, with the booming development of industries such as power, steel, petrochemicals, shipbuilding, and military, the international market demand for large-scale equipment has surged, directly driving the innovation and progress of forging hydraulic press technology. To meet the high demand for large forgings from these industries, the nominal pressure of hydraulic presses has continuously increased to adapt to larger-scale and more complex forging tasks. Simultaneously, with increasingly stringent technical requirements for large forging production, the performance and quality indicators of related products are constantly improving. This demands that hydraulic presses not only possess powerful forging capabilities but also achieve unprecedented levels of precision control to ensure that every forging meets the most stringent quality requirements.

[0003] Large and medium-sized forging hydraulic presses generally adopt a "three-beam, four-column" structure. In this structure, the main load-bearing frame consists of an upper crossbeam, a lower crossbeam, and four diagonally opposite columns. A flange-supported plunger-type working cylinder is installed on the upper crossbeam, and the movable worktable is installed on the lower crossbeam. Nuts at both ends of the columns secure the upper and lower crossbeams to the columns, forming a frame. Pre-tightening force is applied to the parts of the columns inserted into the upper and lower crossbeams. Guide sleeves in the four column holes of the movable crossbeam cooperate with the columns, causing the movable crossbeam to reciprocate up and down.

[0004] The movable crossbeam, as one of the core components of a forging hydraulic press system, plays a crucial role in transmitting pressure, pressing the die, and ensuring machining accuracy. The return stroke of the movable crossbeam is achieved through a return cylinder, which is a piston cylinder. Due to frequent operation, the guide plates are prone to wear, increasing the gap between them. During forging, the movable crossbeam moves, causing uneven force on the piston in the main working cylinder, resulting in damage to the guide plates and seals, affecting production, and even causing accidents.

[0005] Chinese Patent Publication No. CN201931035U discloses a slider guide device for a forging hydraulic press. Because its adjusting wedge adopts an integrated structure, the right-angle transition part is prone to stress concentration and fracture. In addition, the screw protrudes from the body and is easy to come into contact with other parts. Furthermore, the double-headed stud is directly connected to the moving crossbeam body, which makes the moving crossbeam body subject to greater force, which is easy to cause damage, reduce product processing accuracy, increase costs, and reduce production efficiency. Utility Model Content

[0006] To overcome the problems of low precision, inconvenient maintenance, and insufficient resistance to eccentric loads in existing forging hydraulic press guiding devices, this utility model provides a guiding device for the movable crossbeam of a forging hydraulic press. This guiding device changes the force distribution mode of the movable crossbeam body, effectively reducing the load pressure on the adjusting wedge and the movable crossbeam body. It not only improves guiding precision but also enhances resistance to eccentric loads, preventing structural damage, reducing operating losses, and extending the service life of the equipment.

[0007] This utility model is implemented as follows: a guide device for the movable crossbeam of a forging hydraulic press is installed between the outer guide plate of the column and the movable crossbeam, and is distributed on the four sides of the square sleeve of the movable crossbeam. Each guide device includes a cylindrical nut, a double-ended stud, a washer assembly, a pad, a base plate, screws, an adjusting wedge, and a guide plate. A nut hole for placing the cylindrical nut is provided on the outer side of the square sleeve of the movable beam; the cylindrical nut is placed inside the nut hole. One end of the double-ended stud passes through the movable beam and is threaded to the cylindrical nut; the other end is sequentially fitted with a washer assembly and a pad before being threaded to secure the nut. The base plate is fixed to the movable beam by screws and has an inclined surface facing the column side. The adjusting wedge has a notch that mates with the pad; the adjusting wedge also has an inclined surface that contacts the inclined surface of the base plate. Adjusting the thickness of the washer assembly allows for relative sliding between the adjusting wedge and the base plate. The guide plate is bolted to the outside of the adjusting wedge, corresponding to the guide plate on the outside of the column.

[0008] In the above technical solution, preferably, the movable crossbeam has countersunk holes at the screw mounting positions, and the screws are located inside the countersunk holes.

[0009] In the above technical solution, preferably, the base plate and the movable crossbeam are externally fixed together by two screws.

[0010] In the above technical solution, preferably, the gasket group includes gaskets of various thicknesses.

[0011] In the above technical solution, preferably, for every 1mm decrease in the height of the gasket group, the guide gap between the guide plate and the outer guide plate of the column decreases by 0.087mm.

[0012] In the above technical solution, preferably, the adjusting wedge is provided with an oil injection pipeline that communicates with the guide plate.

[0013] The advantages and positive effects of this utility model are: This utility model discloses a guide device for the movable crossbeam of a forging hydraulic press. The pad and adjusting wedge are designed separately, and the base plate and movable crossbeam body are connected externally via fastening, improving the ease of disassembly. The use of a cylindrical nut structure avoids the need for threaded holes in the movable crossbeam body, changing the stress distribution and improving both guiding accuracy and resistance to eccentric loads. These designs effectively reduce the load pressure on the adjusting wedge and movable crossbeam body, preventing structural damage, reducing operational losses, and extending the equipment's service life. This solves the problems of low accuracy, inconvenient maintenance, and insufficient resistance to eccentric loads in current guide devices. All components within this guide device are independent modules, simplifying the processing flow and making installation and replacement more convenient, improving the maintainability of the guide device and enhancing the adaptability of the equipment. Attached Figure Description

[0014] The technical solutions of the embodiments of this application will be further described in detail below with reference to the accompanying drawings. However, it should be understood that these drawings are designed for illustrative purposes only and are not intended to limit the scope of this application. In addition, unless otherwise specified, these drawings are only intended to conceptually illustrate the structural construction described herein and are not necessarily drawn to scale.

[0015] Figure 1 This is a perspective view of the movable crossbeam of this utility model; Figure 2 This is a top view of the movable crossbeam of this utility model; Figure 3 yes Figure 2 AA section view; Figure 4 This is a structural schematic diagram of the movable crossbeam guide device of this utility model.

[0016] In the diagram: 1. Double-ended stud; 2. Washer assembly; 3. Cylindrical nut; 4. Screw; 5. Pad; 6. Base plate; 7. Adjusting wedge; 8. Guide plate; 9. Oil injection line; 10. Guide device; 11. Movable crossbeam; 12. Column. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0018] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "one," "two," "three," "four," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection," "joining," "installation," and "assembly" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] The movable crossbeam is guided by a precision mechanism to ensure smooth and accurate up-and-down reciprocating motion along the column under the drive of the hydraulic cylinder. The guiding device provides precise guidance for the movable crossbeam, effectively controlling its offset and sway, reducing friction and wear during movement, extending the service life of the equipment, and preventing equipment malfunctions and damage caused by unstable movement of the movable crossbeam.

[0021] Please see Figures 1-4 An embodiment of this utility model provides a guide device for the movable crossbeam of a forging hydraulic press. The guide device 10 is installed between the outer guide plate of the column 12 and the movable crossbeam 11, and is distributed on the four sides of the square sleeve of the movable crossbeam 11.

[0022] The column 12 has a square cross-section. Guide plates are installed on the four outer sides of the column 12. A guide device 10 is provided between the outer guide plate of the column 12 and the movable crossbeam 11. The guide device 10 is distributed on the four sides of the square sleeve of the movable crossbeam 11.

[0023] Each guide device 10 includes a cylindrical nut 3, a double-ended stud 1, a washer set 2, a pad 5, a base plate 6, a screw 4, an adjusting wedge 7, and a guide plate 8. A nut hole for placing the cylindrical nut 3 is provided on the outer side of the square sleeve of the movable crossbeam 11, and the cylindrical nut 3 is placed inside the nut hole. One end of the double-ended stud 1 passes through the movable crossbeam 11 and is threadedly connected to the cylindrical nut 3. The other end is sequentially fitted with the washer set 2 and the pad 5 before being threadedly connected to and tightened with a nut. The base plate 6 is fixed to the movable crossbeam 11 by screws 4. The base plate 6 has an inclined surface facing the column 12. The adjusting wedge 7 has a notch that mates with the pad 5. The adjusting wedge 7 also has an inclined surface, which contacts the inclined surface of the base plate 6. The thickness of the adjusting washer set 2 allows the adjusting wedge 7 and the base plate 6 to slide relative to each other. The guide plate 8 is bolted to the outside of the adjusting wedge 7, corresponding to the guide plate on the outside of the column 12.

[0024] In a preferred embodiment, the movable crossbeam 11 has countersunk holes at the mounting screw 4 positions, with the screw 4 located inside the countersunk holes, so that the screw 4 does not protrude outside the movable crossbeam 11, effectively avoiding accidental interference with other components and ensuring the stability and reliability of the equipment operation.

[0025] In a preferred embodiment, the base plate 6 and the movable crossbeam 11 are externally fixed together by two screws 4, which facilitates replacement and maintenance, and provides a tighter fit, thus improving accuracy.

[0026] In a preferred embodiment, the gasket group 2 includes gaskets of various thicknesses to facilitate adjustment of the height of the gasket group 2.

[0027] In a preferred embodiment, for every 1mm decrease in height of the shim group 2, the guide gap between the guide plate 8 and the outer guide plate of the column 12 decreases by 0.087mm. When adjusting the guide gap, the adjusting wedge 7 and the base plate 6 can slide relative to each other by adjusting the thickness of the shims of different thicknesses, thereby changing the guide gap between the guide plate 8 and the outer guide plate of the column 12, making the adjustment of the guide gap precise and quantifiable.

[0028] As a preferred embodiment, since there is friction between the guide plate 8 and the outer guide plate of the column 12, in order to reduce the impact of friction, the adjusting wedge 7 is provided with an oil injection pipe 9 that communicates with the guide plate 8.

[0029] The specific implementation process of this utility model is as follows: Various shims of different thicknesses are designed. By increasing or decreasing the number of shims, the height of the shim block 5 is changed, which in turn changes the height of the adjusting wedge 7. This allows the inclined surface of the adjusting wedge 7 to move along the inclined surface of the base plate 6 fixed on the movable crossbeam 11, thereby adjusting the position of the guide plate 8 installed on the adjusting wedge 7, and thus adjusting the guide clearance between the outer guide plate of the column 12 and the guide plate 8 of the movable crossbeam 11. The use of cylindrical nuts 3 and screws 4 makes the entire guiding device 10 easier to maintain and replace. When it is necessary to replace or repair other parts, simply remove the cylindrical nuts 3 and screws 4 to disassemble the entire guiding device 10 and replace the damaged parts.

[0030] This utility model employs components such as pads 5 and cylindrical nuts 3 to alter the stress distribution on the movable crossbeam 11 and adjusting wedge 7, reducing the load pressure on these components, preventing structural damage, reducing operational losses, and extending the equipment's service life. The base plate 6 and the movable crossbeam 11 are externally secured by two screws 4, ensuring a tighter fit and improved precision. Furthermore, the screws 4 do not protrude from the surface, effectively preventing accidental interference with other components and ensuring the stability and reliability of the equipment's operation. All components within this device are independent modules, simplifying the manufacturing process, making installation and replacement more convenient, improving the maintainability of the guide device 10, and enhancing the equipment's adaptability.

[0031] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall fall within the scope of the technical solution of the present utility model.

Claims

1. A guide device for the movable crossbeam of a forging hydraulic press, wherein the guide device is installed between the outer guide plate of the column and the movable crossbeam, and is distributed on the four sides of the square sleeve of the movable crossbeam; characterized in that: Each guide device includes a cylindrical nut, a double-ended stud, a washer assembly, a pad, a base plate, screws, an adjusting wedge, and a guide plate. A nut hole for placing the cylindrical nut is provided on the outer side of the square sleeve of the movable beam; the cylindrical nut is placed inside the nut hole. One end of the double-ended stud passes through the movable beam and is threaded to the cylindrical nut; the other end is sequentially fitted with a washer assembly and a pad before being threaded to secure the nut. The base plate is fixed to the movable beam by screws and has an inclined surface facing the column side. The adjusting wedge has a notch that mates with the pad; the adjusting wedge also has an inclined surface that contacts the inclined surface of the base plate. Adjusting the thickness of the washer assembly allows for relative sliding between the adjusting wedge and the base plate. The guide plate is bolted to the outside of the adjusting wedge, corresponding to the guide plate on the outside of the column.

2. The guide device for the movable crossbeam of the forging hydraulic press according to claim 1, characterized in that: The movable crossbeam has countersunk holes at the screw mounting positions, and the screws are located inside the countersunk holes.

3. The guide device for the movable crossbeam of the forging hydraulic press according to claim 1, characterized in that: The base plate and the movable crossbeam are externally fixed together by two screws.

4. The guide device for the movable crossbeam of the forging hydraulic press according to claim 1, characterized in that: The gasket set includes gaskets of various thicknesses.

5. The guide device for the movable crossbeam of the forging hydraulic press according to claim 1, characterized in that: For every 1mm decrease in the height of the gasket assembly, the guide gap between the guide plate and the outer guide plate of the column decreases by 0.087mm.

6. The guide device for the movable crossbeam of the forging hydraulic press according to claim 1, characterized in that: The adjusting wedge is equipped with an oil injection line that communicates with the guide plate.

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