Hydraulic cushion of hydraulic machine

Abstract

The utility model provides a hydraulic cushion of a hydraulic machine, which belongs to the technical field of hydraulic cushions and comprises a top cushion, the bottom of the top cushion is rotatably connected with a bottom cushion, the top of the bottom cushion is slidably provided with a leveling frame, adjacent side walls of a supporting seat and the leveling frame are provided with slopes, and a leveling transmission component is longitudinally and slidably arranged between a deformation groove and the top cushion. The leveling frame slides on the top of the bottom cushion in an attached mode through the leveling driving component, in the adjusting process, the leveling frame changes the groove widths of the deformation grooves in the two sides at the same time, the deformation groove on the narrowed side adjusts the height of the top cushion on the corresponding side through the leveling driving component, and meanwhile the deformation groove on the widened side adjusts the height of the top cushion on the other side through the leveling driving component. The levelness of the top cushion is adjusted by adjusting the two sides of the top cushion up and down, so that the levelness of the top cushion corresponds to that of the hydraulic cylinder, the direction accuracy of the hydraulic cylinder during working is ensured, and then highly accurate process control can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic pads, in particular to a hydraulic pad of a hydraulic press. Background Art

[0002] Hydraulic cushions are accessories used to provide uniform pressure in industrial applications, especially in the field of metal forming. They play a key role in hydraulic systems.

[0003] A hydraulic pad is disclosed in the related art (publication number: CN107477312A), and the disclosed technical solution is: by forming a conical boss on the lower end surface of the hydraulic pad, the anti-deformation ability under pressure is improved;

[0004] In the above disclosed technical solutions, the following problems are found in the related technologies: the hydraulic pad of the hydraulic cylinder mainly plays the role of sealing and buffering, and is usually installed at the end of the hydraulic cylinder. The position of the hydraulic pad will vary depending on the design of the hydraulic cylinder. The hydraulic pad is processed in large quantities during production to ensure production efficiency. With the aging of processing equipment and components, errors will occur during processing, resulting in uneven joint surfaces of the hydraulic pad, which will affect the accuracy of the hydraulic cylinder during operation. In this regard, we propose a new type of hydraulic pad for hydraulic presses.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background technology section of this application, and therefore may include prior art information that does not constitute known to ordinary technicians in the field. Utility Model Content

[0006] The utility model aims to solve at least one of the technical problems existing in the prior art or related technology. In order to solve the problem of the flatness of the surface of the hydraulic pad existing in the above-mentioned prior art, the utility model provides a hydraulic pad of a hydraulic press, which adopts a pad surface leveling structure combined with a hydraulic buffer pad structure to achieve the effect of improving the accuracy of the working route of the hydraulic cylinder. The specific technical solution is:

[0007] A hydraulic pad of a hydraulic press comprises a top pad, the bottom of the top pad is rotatably connected to a bottom pad, a leveling frame is slidably arranged on the top of the bottom pad, support seats fixedly connected to the top of the bottom pad are symmetrically arranged on both sides of the leveling frame, side walls adjacent to the support seat and the leveling frame are provided with slopes, the slopes adjacent to the support seat and the leveling frame form a deformation groove, a leveling transmission component is longitudinally slidably arranged between the deformation groove and the top pad, and a leveling drive component for driving the leveling frame to displace is arranged on the bottom pad.

[0008] In the above technical solution, the leveling transmission component includes a movable column longitudinally slidably arranged on the top of the bottom pad, the top of the movable column is provided with a leveling transmission component attached to the bottom of the top pad, and the bottom end of the movable column is provided with a leveling active component located in the inner cavity of the deformation groove.

[0009] The leveling driving component includes a lead screw rotatably arranged on the top of the base pad, the outer wall of the lead screw is threadedly connected to an adjustment seat fixedly connected to the leveling frame, one end of the lead screw is fixedly connected to an extension shaft, the outer wall of the extension shaft is sleeved with a transmission bevel gear, a support shaft is rotatably arranged on the top of the base pad, the outer wall of the support shaft is sleeved with an active bevel gear meshing with the transmission bevel gear, and the support shaft is continuously rotated through a detachable driving component.

[0010] A sealing cover which is sleeved on the outside of the support seat and the leveling driving component is fixedly connected to the top edge of the bottom pad.

[0011] The detachable driving component includes a docking hole opened on the outer wall of the sealing cover, a rotating socket is provided at the end of the support shaft close to the docking hole, an operating member located outside the sealing cover is plugged into the outside of the rotating socket, and the operating member passes through the docking hole and is connected to the support shaft.

[0012] A mounting groove is provided in the circumferential direction of the bottom of the top pad, and a gasket located between the top pad and the sealing cover is embedded in the inner cavity of the mounting groove.

[0013] The top of the bottom pad is fixedly connected with a support column rotatably connected to the top pad, the top of the support column is fixedly installed with a universal movable part, and the bottom of the top pad is fixedly installed with a universal seat sleeved on the outside of the universal movable part.

[0014] A directional guide groove is formed on the top of the bottom pad, and a slider which is slidably arranged in the inner cavity of the directional guide groove is fixedly installed on the bottom of the leveling frame.

[0015] The top of the leveling frame is provided with a clearance groove which is sleeved on the outside of the supporting column.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the hydraulic pad of the hydraulic press:

[0017] 1. The leveling frame is made to slide on the top of the bottom pad through the leveling driving component. The leveling frame changes the width of the deformation grooves on both sides at the same time. The horizontality of the top pad is adjusted by adjusting the two sides of the top pad up and down, thereby ensuring that the horizontality of the top pad corresponds to the hydraulic cylinder and the accuracy of the direction of the hydraulic cylinder when working, thereby achieving highly precise process control.

[0018] Second, the active bevel gear is driven to rotate by the detachable driving component, so that the transmission bevel gear meshing with the active bevel gear rotates, and the transmission bevel gear drives the lead screw to rotate through the extended shaft, so that the adjustment seat threadedly connected to the lead screw drives the leveling frame to move, and the parallelism of the top pad is adjusted according to the left and right displacement of the leveling frame, and then the detachable driving component is removed, so that the leveling process is more convenient.

[0019] 3. In the process of adjusting the position of the leveling frame, the leveling frame drives the slider to slide against the inner wall of the directional guide groove. The directional guide groove parallel to the lead screw ensures the accuracy of the position adjustment of the leveling frame, avoids position deviation, and thus ensures the parallelism of the top pad. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a hydraulic pad of a hydraulic press of the utility model;

[0021] Figure 2 It is a structural explosion diagram of a hydraulic pad of a hydraulic press of the utility model;

[0022] Figure 3 This is a partial structural cross-sectional view of the sealing cover of the utility model;

[0023] Figure 4 It is a schematic diagram of the structure explosion of the bottom pad and the leveling frame of the utility model;

[0024] Figure 5 for Figure 3 A partial enlarged view of the middle part;

[0025] in, Figures 1 to 5 The correspondence between the figure numbers and the component names is: 1-top pad, 2-bottom pad, 3-support column, 4-leveling frame, 5-support seat, 6-movable column, 7-leveling transmission part, 8-leveling active part, 9-outer cylinder, 10-reinforcement pad, 11-deformation groove, 12-screw, 13-universal movable part, 14-universal seat, 15-slider, 16-directional guide groove, 17-bracket, 18-fixed frame, 19-adjusting seat, 20-connecting rod, 21-docking hole, 22-operating part, 23-sealing cover, 24-installing groove, 25-washer, 26-transmission bevel gear, 27-active bevel gear, 28-extension shaft, 29-stabilizing frame, 30-support shaft, 31-sleeve, 32-rotating card seat, 33-jack, 34-slope, 35-blocking part. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] The following is a combination of specific implementation cases and attached Figure 1-Figure 5 The present invention is further described below, but the present invention is not limited to these embodiments.

[0028] A hydraulic pad of a hydraulic press includes a top pad 1, the bottom of the top pad 1 is rotatably connected to a bottom pad 2, and a leveling frame 4 is slidably provided on the top of the bottom pad 2. The top pad 1 rotates freely above the bottom pad 2, and is adjusted according to the plane rotation of the installation position to ensure the horizontality of the surface. Support seats 5 fixed to the top of the bottom pad 2 are symmetrically provided on both sides of the leveling frame 4. The leveling frame 4 slides on the top of the bottom pad 2, and the support seats 5 are fixedly installed on the edges of both sides of the top of the bottom pad 2, so that the leveling frame 4 slides between the two support seats 5. The side walls adjacent to the support seat 5 and the leveling frame 4 are provided with slopes 34, and the slopes 34 adjacent to the support seat 5 and the leveling frame 4 form a deformation groove 11.

[0029] The two support seats 5 have inclined surfaces on one side facing the leveling frame 4, and the surface of the leveling frame 4 facing the support seats 5 on both sides is an inclined surface. The inclined surface of the leveling frame 4 and the slope 34 adjacent to the support seats 5 form a V-shaped groove. When the leveling frame 4 moves left and right, the width of the V-shaped groove changes. That is, the width of the deformation groove 11 on one side becomes smaller while the width of the deformation groove 11 on the other side becomes larger. A leveling transmission component is provided for the longitudinal sliding between the deformation groove 11 and the top pad 1, and a leveling drive component for driving the displacement of the leveling frame 4 is provided on the bottom pad 2.

[0030] The leveling frame 4 is made to slide on the top of the bottom pad 2 by the leveling driving member. During the adjustment process, the leveling frame 4 simultaneously changes the width of the deformation grooves 11 on both sides. The deformation groove 11 on the narrowed side is adjusted to the height of the top pad 1 on the corresponding side by the leveling driving member, and the deformation groove 11 on the widened side is adjusted to the height of the top pad 1 on the other side by the leveling driving member. By adjusting the top pad 1 up and down on both sides, the level of the top pad 1 is adjusted, thereby ensuring that the level of the top pad 1 corresponds to the hydraulic cylinder, ensuring the accuracy of the direction of the hydraulic cylinder when working, and thus achieving highly accurate process control.

[0031] The leveling transmission component includes a movable column 6 that is longitudinally slidably arranged on the top of the bottom pad 2. The outer cylinder 9 is fixed on both sides of the top of the bottom pad 2 by brackets 17. The movable column 6 passes through the inner cavity of the outer cylinder 9. The outer cylinder 9 is perpendicular to the bottom pad 2 to ensure the stability of the moving direction of the movable column 6. The top of the movable column 6 is provided with a leveling transmission member 7 that fits the bottom of the top pad 1, and the bottom of the movable column 6 is provided with a leveling active member 8 located in the inner cavity of the deformation groove 11.

[0032] The leveling transmission member 7 and the leveling active member 8 are both spherical. The leveling transmission member 7 is fixedly mounted on the top of the movable column 6, and the leveling active member 8 is fixedly mounted on the lower end of the movable column 6. The outer wall of the spherical leveling active member 8 fits the surface of the slope 34 on both sides of the deformation groove 11.

[0033] It is worth noting that the leveling drive component includes a lead screw 12 rotatably arranged on the top of the base pad 2, and the outer wall of the lead screw 12 is threadedly connected with an adjustment seat 19 fixed to the leveling frame 4. Two mutually parallel fixing frames 18 are vertically fixedly installed on the top of the base pad 2, and bearings are embedded and installed on the opposite surfaces of the two fixing frames 18, and the two ends of the lead screw 12 are respectively embedded and installed inside the two bearings. The adjustment seat 19 is connected to the lead screw 12 by a threaded through hole that is horizontally opened and penetrates the inner cavity. One end of the connecting rod 20 is fixedly installed on the outer wall of the adjustment seat 19, and the other end of the connecting rod 20 is fixedly installed on the surface of the leveling frame 4.

[0034] One end of the lead screw 12 is fixedly connected with an extension shaft 28, and a stabilizing frame 29 parallel to the fixed frame 18 is vertically fixedly installed on the side of the fixed frame 18. The extension shaft 28 is rotatably arranged between the stabilizing frame 29 and the fixed frame 18, and one end of the extension shaft 28 is fixedly connected with one end of the adjacent lead screw 12. The transmission bevel gear 26 is fixedly sleeved on the outer wall of the extension shaft 28 through a mounting hole opened in the center. The outer wall of the extension shaft 28 is sleeved with the transmission bevel gear 26, and the top of the bottom pad 2 is rotatably arranged with a support shaft 30. A sleeve 31 is fixedly installed on the top of the bottom pad 2, and a bearing is embedded in the through hole of the sleeve 31. The support shaft 30 is embedded in the bearing and its two ends extend out of the outside of the sleeve 31 on both sides.

[0035] The outer wall of the support shaft 30 is sleeved with a driving bevel gear 27 meshing with the transmission bevel gear 26 , and the support shaft 30 is continuously rotated by a detachable driving component.

[0036] The active bevel gear 27 is driven to rotate by the detachable driving component, so that the transmission bevel gear 26 meshing with the active bevel gear 27 rotates, so that the transmission bevel gear 26 drives the lead screw 12 to rotate through the extension shaft 28, so that the adjustment seat 19 threadedly connected to the lead screw 12 drives the leveling frame 4 to move, and the parallelism of the top pad 1 is adjusted according to the left and right displacement of the leveling frame 4. After that, the detachable driving component is removed, so that the operation of the leveling process is more convenient.

[0037] A sealing cover 23 is fixedly connected to the top edge of the bottom pad 2 and is sleeved on the outside of the support seat 5 and the leveling drive component. The sealing cover 23 covers the outside of the components on the bottom pad 2, and the sealing cover 23 protects the components on the bottom pad 2. At the location where the hydraulic pad is installed, the bottom pad 2 drives the sealing cover 23 to be embedded into the groove through the groove.

[0038] In addition, the detachable driving member includes a docking hole 21 provided on the outer wall of the sealing cover 23, a rotating card seat 32 is provided at the end of the support shaft 30 close to the docking hole 21, an operating member 22 located outside the sealing cover 23 is plugged into the outside of the rotating card seat 32, and the operating member 22 passes through the docking hole 21 and is connected to the support shaft 30. An insertion hole 33 corresponding to the rotating card seat 32 is provided at the end of the operating member 22, the insertion hole 33 is a polygonal groove, and the rotating card seat 32 is a polygonal convex block, and the rotating card seat 32 is fixedly installed at the end of the support shaft 30 located in the inner cavity of the docking hole 21.

[0039] When the top pad 1 is leveled, the plug hole 33 of the operating member 22 is plugged into the rotating card seat 32 located in the docking hole 21. Then the operating member 22 drives the support shaft 30 to rotate, so that the support shaft 30 drives the active bevel gear 27 to rotate, so that the transmission bevel gear 26 meshing with the active bevel gear 27 rotates, so that the transmission bevel gear 26 drives the lead screw 12 to rotate through the extension shaft 28, so that the adjustment seat 19 threadedly connected to the lead screw 12 drives the leveling frame 4 to move, and the parallelism of the top pad 1 is adjusted according to the left and right displacement of the leveling frame 4. After the top pad 1 is leveled, the operating member 22 is removed from the rotating card seat 32 of the support shaft 30 and taken out from the docking hole 21. Then the blocking member 35 is embedded in the docking hole 21 to ensure the overall sealing of the sealing cover 4.

[0040] The bottom of the top pad 1 is provided with a mounting groove 24 in the circumferential direction, and a gasket 25 is embedded in the inner cavity of the mounting groove 24 and located between the top pad 1 and the sealing cover 23. The reinforcing pad 10 is fixedly installed at the bottom of the top pad 1 so that the gasket 25 is located between the reinforcing pad 10 and the sealing cover 23. After the reinforcing pad 10 is installed, the mounting groove 24 is provided in the circumferential direction of the bottom of the reinforcing pad 10. The gasket 25 is made of elastic material, and the gasket 25 of the elastic material can be elastically deformed. After the gasket 25 is embedded and installed in the mounting groove 24, the annular top of the sealing cover 23 is fitted to the bottom of the gasket 25, thereby ensuring the sealing between the top pad 1 and the sealing cover 23.

[0041] In addition, the top of the bottom pad 2 is fixedly connected with a support column 3 that is rotatably connected to the top pad 1, the top of the support column 3 is fixedly installed with a universal movable part 13, and the bottom of the top pad 1 is fixedly installed with a universal seat 14 that is sleeved on the outside of the universal movable part 13. The lower end of the support column 3 is vertically fixedly installed at the top center of the bottom pad 2, the spherical universal movable part 13 is fixedly installed on the top of the support column 3, and the universal seat 14 with a spherical groove at the bottom is movably sleeved on the outside of the universal movable part 13. Through the spherical universal movable part 13 at the top of the support column 3, the top pad 1 can rotate freely, so that the horizontality of the upper surface of the top pad 1 can be adjusted.

[0042] Furthermore, a directional guide groove 16 is formed on the top of the base pad 2 , and a slider 15 slidably disposed in the inner cavity of the directional guide groove 16 is fixedly mounted on the bottom of the leveling frame 4 .

[0043] In the process of adjusting the position of the leveling frame 4, the leveling frame 4 drives the slider 15 to slide against the inner wall of the directional guide groove 16. The directional guide groove 16 parallel to the screw 12 ensures the accuracy of the position adjustment of the leveling frame 4 and avoids position deviation, thereby ensuring the parallelism of the top pad 1.

[0044] The top of the leveling frame 4 is provided with a clearance groove sleeved on the outside of the support column 3. During the left-right movement of the leveling frame 4, the clearance groove moves on the periphery of the support column 3, thereby avoiding interference.

[0045] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0046] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0047] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic pad for a hydraulic press, characterized in that: The invention comprises a top pad (1), the bottom of the top pad (1) is rotatably connected to a bottom pad (2), the top of the bottom pad (2) is slidably provided with a leveling frame (4), support seats (5) fixedly connected to the top of the bottom pad (2) are symmetrically provided on both sides of the leveling frame (4), side walls of the support seat (5) adjacent to the leveling frame (4) are provided with slopes (34), the slopes (34) adjacent to the support seat (5) and the leveling frame (4) form a deformation groove (11), a leveling transmission component is longitudinally slidably provided between the deformation groove (11) and the top pad (1), and a leveling drive component for driving the leveling frame (4) to move is provided on the bottom pad (2).

2. The hydraulic pad of a hydraulic press according to claim 1, characterized in that: The leveling transmission component comprises a movable column (6) longitudinally slidably arranged on the top of the bottom pad (2), a leveling transmission member (7) affixed to the bottom of the top pad (1) is arranged at the top end of the movable column (6), and a leveling active member (8) located in the inner cavity of the deformation groove (11) is arranged at the bottom end of the movable column (6).

3. The hydraulic pad of a hydraulic press according to claim 1, characterized in that: The leveling drive component comprises a lead screw (12) rotatably arranged on the top of the base pad (2); the outer wall of the lead screw (12) is threadedly connected to an adjustment seat (19) fixedly connected to the leveling frame (4); one end of the lead screw (12) is fixedly connected to an extension shaft (28); the outer wall of the extension shaft (28) is sleeved with a transmission bevel gear (26); a support shaft (30) is rotatably arranged on the top of the base pad (2); the outer wall of the support shaft (30) is sleeved with an active bevel gear (27) meshing with the transmission bevel gear (26); and the support shaft (30) is continuously rotated by the detachable drive component.

4. The hydraulic pad of a hydraulic press according to claim 3, characterized in that: A sealing cover (23) is fixedly connected to the top edge of the base pad (2) and is sleeved on the support seat (5) and the outside of the leveling drive component.

5. The hydraulic pad of a hydraulic press according to claim 4, characterized in that: The detachable driving component comprises a docking hole (21) formed on the outer wall of the sealing cover (23); a rotating clamping seat (32) is provided at the end of the support shaft (30) close to the docking hole (21); an operating member (22) located outside the sealing cover (23) is plugged into the outside of the rotating clamping seat (32); and the operating member (22) passes through the docking hole (21) and is connected to the support shaft (30).

6. The hydraulic pad of a hydraulic press according to claim 5, characterized in that: A mounting groove (24) is provided in the circumferential direction of the bottom of the top pad (1), and a gasket (25) is embedded in the inner cavity of the mounting groove (24) and is located between the top pad (1) and the sealing cover (23).

7. The hydraulic pad of a hydraulic press according to claim 1, characterized in that: A support column (3) rotatably connected to the top pad (1) is fixedly connected to the top of the bottom pad (2); a universal movable part (13) is fixedly mounted on the top of the support column (3); and a universal seat (14) sleeved on the outside of the universal movable part (13) is fixedly mounted on the bottom of the top pad (1).

8. The hydraulic pad of a hydraulic press according to claim 1, characterized in that: A directional guide groove (16) is provided on the top of the base pad (2), and a slider (15) slidably arranged in the inner cavity of the directional guide groove (16) is fixedly mounted on the bottom of the leveling frame (4).

9. The hydraulic pad of a hydraulic press according to claim 7, characterized in that: The top of the leveling frame (4) is provided with a clearance groove which is sleeved on the outside of the support column (3).

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