Pressure-bearing device of servo hydraulic cylinder

Abstract

The utility model provides a servo hydraulic cylinder pressure-bearing device which comprises a sleeve, and the top of the sleeve is fixedly connected with a rolling mill base. The bottom of the sleeve is detachably connected with a cylinder body of the hydraulic cylinder; the outer side of the sleeve is sleeved with a pressure bearing pad, the bottom of the pressure bearing pad is attached to the top face of the cylinder body, and a jacking assembly is arranged at the top of the pressure bearing pad and used for jacking the pressure bearing pad downwards. The servo hydraulic cylinder pressure-bearing device has the advantages that counter-acting force of the servo hydraulic cylinder in the rolling process is borne through the sleeve and the pressure-bearing pad, the pressure-bearing pad downwards abuts against the cylinder body under the action of the abutting assembly, more counter-acting force is borne, the sleeve is effectively protected and prevented from deforming, the service life of the pressure-bearing device is greatly prolonged, and the service life of the servo hydraulic cylinder is prolonged. And the maintenance and replacement cost of the pressure-bearing device is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of industrial manufacturing, and in particular relates to a servo hydraulic cylinder pressure bearing device. Background Art

[0002] In recent years, my country's steel industry has been growing year by year, and has developed rapidly with the continuous advancement of steel rolling production technology and the continuous updating of steel rolling equipment. In the steel rolling production of vertical roll mills, AGC servo hydraulic cylinders are the main devices for controlling the quality of steel plates and ensuring thickness of the steel rolling production line.

[0003] During the rolling process, most AGC servo hydraulic cylinders are hoisted, and the pressure-bearing device is basically just a column. During the rolling process, the column is very easy to deform, and at this time the column needs to be corrected and repaired. The time that can be used after correction is also very limited. Finally, the column still needs to be replaced. However, since the top of the column is mostly welded and fixed to the rolling mill stand, it is more laborious to replace and the replacement efficiency is low. Utility Model Content

[0004] In view of this, the utility model aims to provide a servo hydraulic cylinder pressure bearing device, in order to solve at least one of the above-mentioned technical problems.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A servo hydraulic cylinder pressure bearing device comprises a sleeve, the top of which is fixedly connected to a rolling mill stand; the bottom of which is detachably connected to a cylinder body of a hydraulic cylinder;

[0007] A pressure pad is sleeved on the outer side of the sleeve, the bottom of the pressure pad is arranged in close contact with the top surface of the cylinder body, and the top of the pressure pad is provided with a tightening component for tightening the pressure pad downward.

[0008] Furthermore, a threaded sleeve is sleeved on the outer side of the bottom of the sleeve, and the threaded sleeve is rotatably connected to the sleeve;

[0009] A threaded column corresponding to the threaded sleeve is fixedly arranged on the top of the cylinder body;

[0010] The sleeve is threadedly connected to the threaded column via the threaded sleeve.

[0011] Further, the pressure pad includes a pressure block and a pressure plate, the pressure block is arranged on the upper surface of the pressure plate, the upper surface of the pressure plate has a groove corresponding to the pressure block, and the bottom of the pressure block is arranged in the groove;

[0012] The pressure block and the pressure plate are provided with through holes corresponding to the sleeve at their center positions, and the sleeve passes through the pressure plate and the pressure pad through the through holes;

[0013] The bottom of the pressure plate is provided with a through bolt hole, the bottom of the pressure block is provided with a threaded hole, and the pressure pad is connected to the pressure block via connecting bolts at the bottom.

[0014] Furthermore, a receiving groove is provided at the center of the bottom of the pressure pad;

[0015] The threaded sleeve is arranged in the accommodating groove.

[0016] Furthermore, the tightening assembly includes a screw rod and a connecting plate, and the connecting plate is fixedly connected to the rolling mill stand;

[0017] The connection plate is provided with a threaded hole corresponding to the screw rod, the upper surface of the pressure block is provided with a threaded hole corresponding to the screw rod, and the screw rod is threadedly connected to the threaded hole.

[0018] Furthermore, the number of the screws is more than two;

[0019] The screw is a double-headed, bidirectional screw.

[0020] Furthermore, the outer wall of the cylinder body has a lifting lug for lifting the servo hydraulic cylinder.

[0021] Compared with the prior art, the servo hydraulic cylinder pressure bearing device described in the utility model has the following beneficial effects:

[0022] (1) The servo hydraulic cylinder pressure-bearing device described in the utility model bears the reaction force of the servo hydraulic cylinder during the rolling process through the sleeve and the pressure-bearing pad, and the pressure-bearing pad presses the cylinder body downward under the action of the tightening component to bear more reaction force, effectively protecting the sleeve and preventing the sleeve from deformation. Compared with the traditional method of only using a column for pressure bearing, the sleeve and the pressure-bearing pad of the utility model bear the reaction force of the servo hydraulic cylinder during the rolling process, which greatly improves the service life of the pressure-bearing device and reduces the maintenance and replacement costs of the pressure-bearing device.

[0023] (2) The servo hydraulic cylinder pressure-bearing device described in the utility model, the pressure pad includes a pressure block and a pressure plate. Since the pressure plate plays a major role in bearing pressure during the rolling process, the pressure plate is more prone to breakage than the pressure block. When breakage occurs, since the pad and the pressure plate are connected in a split manner, we only need to replace the pressure plate without replacing the entire pressure pad, which greatly reduces the replacement cost of the pressure pad.

[0024] (3) The servo hydraulic cylinder pressure-bearing device described in the utility model adopts a double-headed bidirectional screw in the tightening assembly. When the pressure pad needs to be replaced, the servo hydraulic cylinder is first hung by the lifting ear on the outer wall of the cylinder body, and then the double-headed bidirectional screw is rotated to move the entire pressure pad upward to expose the threaded sleeve in the receiving groove of the pressure plate. The threaded sleeve is rotated to separate the sleeve from the threaded column on the cylinder body, and then the connecting bolts at the bottom of the pressure plate are removed. Finally, the pressure plate is removed downward to repair or replace it with a new one, which greatly improves the cost of repairing or replacing the pressure plate and is simple to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0026] Figure 1 It is a cross-sectional schematic diagram of the servo hydraulic cylinder pressure bearing device according to an embodiment of the utility model;

[0027] Figure 2 It is a partial cross-sectional view of the servo hydraulic cylinder pressure-bearing device described in an embodiment of the utility model.

[0028] Description of reference numerals:

[0029] 1. Sleeve; 2. Pressure block; 3. Pressure plate; 4. Connecting bolt; 5. Cylinder body; 6. Screw; 7. Connecting plate; 8. Threaded column; 9. Threaded sleeve. DETAILED DESCRIPTION

[0030] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0031] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0033] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0034] like Figure 1 As shown, a servo hydraulic cylinder pressure-bearing device comprises a sleeve 1, the top of which is fixedly connected to a rolling mill stand; the bottom of which is detachably connected to a cylinder body 5 of a hydraulic cylinder;

[0035] A pressure pad is sleeved on the outer side of the sleeve 1, the bottom of the pressure pad is fitted with the top surface of the cylinder body 5, and the top of the pressure pad is provided with a tightening assembly for tightening the pressure pad downward.

[0036] The present application uses the sleeve 1 and the pressure pad to bear the reaction force of the servo hydraulic cylinder during the rolling process, and the pressure pad presses the cylinder body 5 downward under the action of the tightening assembly, thereby bearing more reaction force, effectively protecting the sleeve 1 and preventing the sleeve 1 from deformation. Compared with the traditional method of only using columns for pressure bearing, the sleeve 1 and the pressure pad of the present application bear the reaction force of the servo hydraulic cylinder during the rolling process, which greatly improves the service life of the pressure-bearing device and reduces the maintenance and replacement costs of the pressure-bearing device.

[0037] like Figure 1 , Figure 2 As shown, a threaded sleeve 9 is sleeved on the outer side of the bottom of the sleeve 1, and the threaded sleeve 9 is rotatably connected to the sleeve 1; a threaded column 8 corresponding to the threaded sleeve 9 is fixed on the top of the cylinder body 5; the sleeve 1 and the threaded column 8 are threadedly connected through the threaded sleeve 9. Through this structural design, it is convenient to connect the threaded column 8 with the sleeve 1.

[0038] The pressure pad includes a pressure block 2 and a pressure plate 3, the pressure block 2 is arranged on the upper surface of the pressure plate 3, the upper surface of the pressure plate 3 has a groove corresponding to the pressure block 2, and the bottom of the pressure block 2 is arranged in the groove; the center positions of the pressure block 2 and the pressure plate 3 are provided with a through hole corresponding to the sleeve 1, and the sleeve 1 passes through the pressure plate 3 and the pressure pad through the through hole; the bottom of the pressure plate 3 has a through bolt hole, and the bottom of the pressure block 2 has a threaded hole, and the pressure pad is connected to the pressure block 2 through the connecting bolts 4 at the bottom.

[0039] In the present application, the pressure pad includes a pressure block 2 and a pressure plate 3. During the rolling process, the pressure plate 3 plays a major pressure-bearing role. Compared with the pressure block 2, the pressure plate 3 is more prone to breakage. When a break occurs, since the pad and the pressure plate 3 are connected in a split manner, we only need to replace the pressure plate 3 without replacing the entire pressure pad, which greatly reduces the replacement cost of the pressure pad.

[0040] The center of the bottom of the pressure plate 3 is provided with a receiving groove, and the threaded sleeve 9 is arranged in the receiving groove. The structural design of the receiving groove allows the pressure plate 3 to fully contact the upper surface of the cylinder body 5, and the pressure plate 3 is mainly used to share the reaction force during the rolling process.

[0041] The clamping assembly includes a screw rod 6 and a connecting plate 7, and the connecting plate 7 is fixedly connected to the rolling mill stand; a threaded hole corresponding to the screw rod 6 is opened on the connecting plate 7, and a threaded hole corresponding to the screw rod 6 is opened on the upper surface of the pressure block 2, and the screw rod 6 is threadedly connected to the threaded hole. The number of the screw rods 6 is more than two; the screw rod 6 is a double-headed bidirectional screw rod 6. The outer wall of the cylinder body 5 has a lifting lug for hoisting the servo hydraulic cylinder. A double-headed bidirectional screw rod 6 refers to a screw rod 6 with threads at both ends of the screw rod 6 and the threads are in opposite directions. The double-headed bidirectional screw rod 6 facilitates the pressure pad to move upward quickly as a whole, exposing the threaded sleeve 9 below.

[0042] When the pressure pad needs to be replaced, first hang the servo hydraulic cylinder through the lifting ear on the outer wall of the cylinder body 5, and then by rotating the double-headed bidirectional screw 6, the entire pressure pad can be moved up to reveal the threaded sleeve 9 set in the accommodating groove of the pressure plate 3, and the threaded sleeve 9 is rotated to separate the sleeve 1 from the threaded column 8 on the cylinder body 5, and then the connecting bolts 4 at the bottom of the pressure plate 3 are removed, and finally the pressure plate 3 is removed downward (it should be noted that the diameter of the through hole at the center of the pressure plate 3 is larger than the outer diameter of the threaded sleeve 9), and the pressure plate 3 is repaired or replaced with a new one, which greatly improves the cost of repairing or replacing the pressure plate, and is simple to operate.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A servo hydraulic cylinder pressure bearing device, characterized in that: It comprises a sleeve, the top of which is fixedly connected to a rolling mill stand; the bottom of which is detachably connected to a cylinder body of a hydraulic cylinder; A pressure pad is sleeved on the outer side of the sleeve, the bottom of the pressure pad is fitted with the top surface of the cylinder body, and the top of the pressure pad has a tightening assembly for tightening the pressure pad downward; A threaded sleeve is sleeved on the outer side of the bottom of the sleeve, and the threaded sleeve is rotatably connected to the sleeve; A threaded column corresponding to the threaded sleeve is fixedly arranged on the top of the cylinder body; The sleeve is threadedly connected to the threaded column via the threaded sleeve; The pressure pad includes a pressure block and a pressure plate, wherein the pressure block is arranged on the upper surface of the pressure plate, the upper surface of the pressure plate has a groove corresponding to the pressure block, and the bottom of the pressure block is arranged in the groove; The pressure block and the pressure plate are provided with through holes corresponding to the sleeve at their center positions, and the sleeve passes through the pressure plate and the pressure pad through the through holes; The bottom of the pressure plate is provided with a through bolt hole, the bottom of the pressure block is provided with a threaded hole, and the pressure pad is connected to the pressure block via connecting bolts at the bottom.

2. The servo hydraulic cylinder pressure bearing device according to claim 1, characterized in that: A receiving groove is provided at the center of the bottom of the pressure pad; The threaded sleeve is arranged in the accommodating groove.

3. The servo hydraulic cylinder pressure bearing device according to claim 1, characterized in that: The tightening assembly includes a screw rod and a connecting plate, and the connecting plate is fixedly connected to the rolling mill stand; The connection plate is provided with a threaded hole corresponding to the screw rod, the upper surface of the pressure block is provided with a threaded hole corresponding to the screw rod, and the screw rod is threadedly connected to the threaded hole.

4. The servo hydraulic cylinder pressure bearing device according to claim 3 is characterized in that: The number of the screws is more than two; The screw is a double-headed, bidirectional screw.

5. The servo hydraulic cylinder pressure bearing device according to claim 1, characterized in that: The outer wall of the cylinder body is provided with a lifting lug for lifting the servo hydraulic cylinder.

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