Full-tonnage balancing device of large-tonnage large-weather-depth single-column hydraulic press

Abstract

The utility model relates to the technical field of hydraulic machines, and discloses a large-tonnage large-weather-depth single-column hydraulic machine full-tonnage balancing device which comprises an upper beam, a sliding block, a supporting column, a working table, a pull rod, a cushion block and a locking nut, the upper beam, the working table and the supporting column are connected into a whole through the pull rod, and the upper beam and the working table are located at the upper end and the lower end of the supporting column respectively. The upper locking nut and the lower locking nut respectively lock the upper plane of the upper beam and the lower plane of the workbench, a loading hydraulic cylinder is arranged at the bottom of one side of the upper beam, a piston rod of the loading hydraulic cylinder is connected with the upper plane of a sliding block through a connecting flange and fastened through an inner hexagon screw, and a cushion block is installed on the upper plane of the workbench. And the lower plane of the cushion block is fastened on the upper plane of the workbench through an inner hexagon screw. The included angle between the lower plane of the upper beam and the upper plane of the supporting column is eliminated, displacement of the upper beam is eliminated, and the rigidity, the service life and the stability of a machine are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic presses, in particular to a full-tonnage balancing device for a large-tonnage and large-depth single-column hydraulic press. Background Art

[0002] As the shipbuilding industry and forging industry have increasingly higher requirements for the pressing tonnage and depth of single-column hydraulic presses, their tonnage is generally above 1250 tons-2000 tons, and the depth is above 1600mm-2000mm. The normal structural design adopts a three-beam two-tie rod structure, which is pre-tightened by hydraulic overpressure to form a force-bearing frame. See the attached figure. Figure 3 When the slider moves downward and load is applied, the cantilever is stressed, which creates an angle a between the upper beam and the support column (see attached figure). Figure 5 , which affects the machine stiffness and has a great impact on the machine life and stability. Therefore, there is an urgent need for a large-tonnage and large-depth single-column hydraulic press full-tonnage balancing device to solve the above technical problems. Utility Model Content

[0003] The utility model aims to provide a full-tonnage balancing device for a large-tonnage and large-depth single-column hydraulic press to solve the problems raised in the above-mentioned background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A full-tonnage balancing device for a large-tonnage and large-depth single-column hydraulic press comprises an upper beam, a sliding block, a supporting column, a workbench, a tie rod, a pad, and a locking nut. The upper beam, the workbench, and the supporting column are connected as a whole by a tie rod. The upper beam and the workbench are respectively located at the upper and lower ends of the supporting column. The upper and lower locking nuts respectively lock the upper plane of the upper beam and the lower plane of the workbench. A loading hydraulic cylinder is provided at the bottom of one side of the upper beam. The piston rod of the loading hydraulic cylinder is connected to the upper plane of the sliding block through a connecting flange and is fastened by an internal hexagon screw. A pad is provided on the upper plane of the workbench. The lower plane of the pad is fastened to the plane of the workbench by an internal hexagon screw. A balancing cylinder of a balancing device is provided on the upper plane of the pad and is fastened by an internal hexagon screw. The balancing cylinder of the balancing device consists of a cylinder body and a plunger. The cylinder body is provided at the upper end of the plunger.

[0006] As a preferred technical solution of the utility model, a 5-10mm space is left between the plunger and the lower plane of the upper beam for the plunger to move.

[0007] As a preferred technical solution of the present utility model, the number of the locking nuts is set to four, and the four locking nuts are arranged opposite to each other in pairs.

[0008] As a preferred technical solution of the utility model, the cushion block is located on the right side of the supporting column.

[0009] As a preferred technical solution of the utility model, the distance from the center of the loading hydraulic cylinder to the center of the pull rod is the same as the distance from the center of the pull rod to the center of the balancing cylinder of the balancing device.

[0010] As a preferred technical solution of the utility model, the pressurizing area of ​​the loading hydraulic cylinder is the same as the pressurizing area of ​​the balancing cylinder of the balancing device.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The utility model adopts a balancing device with full tonnage, the same center distance and the same liquid pressure. The pressing force of the loading hydraulic cylinder is the same as the ejection force of the balancing cylinder of the balancing device. The distance from the center of the loading hydraulic cylinder to the center of the pull rod is the same as the distance from the center of the pull rod to the center of the balancing cylinder of the balancing device. The pressurized area of ​​the loading hydraulic cylinder is the same as the pressurized area of ​​the balancing oil cylinder. The liquid pressure provided by the hydraulic pump is the same as that of the loading hydraulic cylinder and the balancing cylinder of the balancing device. In this way, the angle between the lower plane of the upper beam and the upper plane of the supporting column is eliminated, the displacement of the upper beam is eliminated, and the rigidity, life and stability of the machine are greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a side view structural schematic diagram of the utility model;

[0016] Figure 3 This is a schematic diagram of the installation effect of the utility model installed on a hydraulic press;

[0017] Figure 4 for Figure 3 A side view structural schematic diagram of;

[0018] Figure 5 for Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0019] In the figure: 1. workbench; 2. pull rod; 3. support column; 4. upper beam; 5. slide block; 6. loading hydraulic cylinder; 7. locking nut; 8. spacer block; 9. balancing cylinder of balancing device; 10. cylinder body; 11. plunger; 12. hydraulic press. DETAILED DESCRIPTION

[0020] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It should also be noted that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings. The different types of section lines in the drawings in the embodiments of the utility model are not marked according to the national standard, nor are there any requirements for the materials of the components, but are used to distinguish the cross-sectional views of the components in the drawings.

[0021] See also Figure 1-5 A full-tonnage balancing device for a large-tonnage and large-depth single-column hydraulic press comprises an upper beam 4, a slider 5, a supporting column 3, a workbench 1, a tie rod 2, a cushion block 8, and a locking nut 7. The upper beam 4, the workbench 1, and the supporting column 3 are connected as a whole through the tie rod 2. The upper beam 4 and the workbench 1 are respectively located at the upper and lower ends of the supporting column 3. The upper and lower locking nuts 7 respectively lock the upper plane of the upper beam 4 and the lower plane of the workbench 1. A loading hydraulic cylinder 6 is arranged at the bottom of one side of the upper beam 4. The piston rod of the loading hydraulic cylinder 6 is connected to the upper plane of the slider 5 through a connecting flange and is fastened by an inner hexagon screw. A cushion block 8 is arranged on the upper plane of the workbench 1. The lower plane of the cushion block 8 is fastened to the upper plane of the workbench 1 by an inner hexagon screw. A balancing cylinder 9 of a balancing device is arranged on the upper plane of the cushion block 8 and is fastened by an inner hexagon screw. The balancing cylinder 9 of the balancing device consists of a cylinder body 10 and a plunger 11. The cylinder body 10 is arranged at the upper end of the plunger 11.

[0022] There is a 5-10 mm space between the plunger 11 and the lower plane of the upper beam 4 for the plunger 11 to move.

[0023] The number of the locking nuts 7 is four, and the four locking nuts 7 are arranged opposite to each other in pairs.

[0024] The cushion block 8 is located on the right side of the supporting column 3 .

[0025] The distance from the center of the loading hydraulic cylinder 6 to the center of the pull rod 2 is the same as the distance from the center of the pull rod 2 to the center of the balancing cylinder 9 of the balancing device.

[0026] The pressurizing area of ​​the loading hydraulic cylinder 6 is the same as the pressurizing area of ​​the balancing cylinder 9 of the balancing device.

[0027] The working principle and use process of the utility model are as follows: first, when the oil from the oil pump passes through the hydraulic control valve and enters the loading hydraulic cylinder 6, the slider 5 is pushed downward, and the hydraulic oil entering the loading hydraulic cylinder 6 enters the balancing cylinder 9 of the balancing device through the hydraulic control valve at the same time. When the slider 5 moves downward and contacts the workpiece to apply a load, the hydraulic oil entering the balancing cylinder pushes the balancing cylinder body of the balancing device to move upward. As the balancing cylinder body of the balancing device moves upward, the upper plane of the cylinder body 10 contacts and loads the lower plane of the upper beam 4. As the pressing force of the loading hydraulic cylinder 6 and the ejection force of the balancing cylinder 9 of the balancing device are equal, the hydraulic oil The distance from the center of the loading hydraulic cylinder 6 to the center of the pull rod 2 is the same as the distance from the center of the pull rod 2 to the center of the balancing cylinder 9 of the balancing device. The pressurized area of ​​the loading hydraulic cylinder 6 is the same as the pressurized area of ​​the balancing cylinder 9 of the balancing device. The liquid pressure provided by the hydraulic pump is the same as the liquid pressure of the loading hydraulic cylinder 6 and the balancing cylinder 9 of the balancing device, so that force balance is generated. In this way, the angle between the lower plane of the upper beam and the upper plane of the supporting column is eliminated, and the displacement of the upper beam is eliminated, which greatly improves the rigidity, life and stability of the machine. The contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

[0028] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the utility model. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) by each other to form a technical solution.

Claims

1. A full-tonnage balancing device for a large-tonnage and large-depth single-column hydraulic press, comprising an upper beam (4), a slide block (5), a support column (3), a workbench (1), a pull rod (2), a cushion block (8), and a locking nut (7), characterized in that: The upper beam (4), the workbench (1) and the supporting column (3) are connected as a whole through a pull rod (2). The upper beam (4) and the workbench (1) are respectively located at the upper and lower ends of the supporting column (3). The upper and lower locking nuts (7) respectively lock the upper plane of the upper beam (4) and the lower plane of the workbench (1). A loading hydraulic cylinder (6) is arranged at the bottom of one side of the upper beam (4). The piston rod of the loading hydraulic cylinder (6) is connected to the upper plane of the slider (5) through a connecting flange and is fastened by a hexagon socket screw. The upper plane of the workbench (1) is equipped with a cushion block (8). The lower plane of the cushion block (8) is fastened to the upper plane of the workbench (1) by a hexagon socket screw. The upper plane of the cushion block (8) is equipped with a balancing device balancing cylinder (9) and is fastened by a hexagon socket screw. The balancing device balancing cylinder (9) is composed of a cylinder body (10) and a plunger (11). The cylinder body (10) is arranged at the upper end of the plunger (11).

2. The full-tonnage balancing device of a large-tonnage and large-depth single-column hydraulic press according to claim 1 is characterized by: A space of 5-10 mm is left between the plunger (11) and the lower plane of the upper beam (4) to provide a movement distance for the plunger (11).

3. The full-tonnage balancing device of a large-tonnage and large-depth single-column hydraulic press according to claim 1 is characterized by: The number of the locking nuts (7) is set to four, and the four locking nuts (7) are arranged opposite to each other in pairs.

4. The full-tonnage balancing device of a large-tonnage and large-depth single-column hydraulic press according to claim 1 is characterized by: The cushion block (8) is located on the right side of the supporting column (3).

5. The full-tonnage balancing device of a large-tonnage and large-depth single-column hydraulic press according to claim 1 is characterized by: The distance from the center of the loading hydraulic cylinder (6) to the center of the pull rod (2) is the same as the distance from the center of the pull rod (2) to the center of the balancing cylinder (9) of the balancing device.

6. The full-tonnage balancing device of a large-tonnage and large-depth single-column hydraulic press according to claim 1 is characterized by: The pressurizing area of ​​the loading hydraulic cylinder (6) is the same as the pressurizing area of ​​the balancing cylinder (9) of the balancing device.

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