Locking structure and locking method

Abstract

The present application relates to a locking structure and a locking method, and belongs to the field of metal rolling equipment. A locking device cylinder is fixedly arranged on a working shaft, and a locking device piston is arranged in the locking device cylinder. One side cavity of the locking device piston is connected to a high-pressure oil port, and the other side cavity is connected to a low-pressure oil port. A pull rod connecting a straightening roller and the working shaft is further provided, the locking device piston is arranged on the pull rod, and the pull rod penetrates through the locking device cylinder. The straightening roller and the working shaft are connected through the pull rod, the quick locking and loosening of the straightening roller and the quick clamping and loosening of the pull rod are realized, and sufficient locking force is provided. Through the present application, the straightening roller can be quickly locked and sufficient locking force can be provided, so that the straightening machine can meet the requirements of production and quick roller replacement.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of metal rolling equipment, and relates to a locking structure. BACKGROUND

[0002] Straightening is an extremely important process for metal materials, which determines the quality level of products. In the production process, due to the change of product specifications and the wear of straightening rollers, the straightening rollers need to be frequently replaced. In order to quickly replace the rollers, a keyless connection form convenient for disassembly needs to be adopted, and in order to transmit the straightening torque and overcome the straightening force, a great pressing force needs to be used to generate sufficient friction between the taper surface of the straightening roller and the working shaft, so as to achieve the purpose of straightening the product.

[0003] However, the traditional hydraulic nut plus expansion sleeve mode needs manual tightening of the nut, has high working intensity, and the operation time and locking force are uncontrollable. This mode not only puts high requirements on the operator and reduces the locking reliability of the straightening roller, but also greatly increases the roller replacement time, which is not suitable for the needs of quick roller replacement of multiple rollers. SUMMARY

[0004] Therefore, the purpose of the present application is to provide a locking structure, design a new locking structure that can achieve quick locking and provide sufficient locking force, so as to overcome the above problems and ensure that the straightening machine meets the needs of production and quick replacement of straightening rollers.

[0005] To achieve the above purpose, the present application provides the following technical scheme:

[0006] A locking structure, a locking device cylinder is fixedly arranged on a working shaft, and a locking device piston is arranged in the locking device cylinder; one side cavity of the locking device piston is connected to a high-pressure oil port, and the other side cavity is connected to a low-pressure oil port; the locking structure further comprises a pull rod connecting a to-be-locked roller and the working shaft, the locking device piston is arranged on the pull rod, and the pull rod penetrates through the locking device cylinder.

[0007] Optionally, a guide rod is arranged outside the locking device.

[0008] Optionally, a holding cylinder is arranged outside the guide rod, the holding cylinder is symmetrically provided with two holding half-rings, and the holding cylinder is provided with a holding half-ring on the side facing the pull rod. The holding cylinder is moved in the direction of approaching or moving away from the pull rod to realize holding and loosening of the pull rod.

[0009] Optionally, a rodless cavity of the holding cylinder is connected to the high-pressure oil port through a low-pressure needle valve.

[0010] Optionally, a rod cavity of the holding cylinder is connected to the low-pressure oil port through a holding cylinder stop valve.

[0011] Optionally, the pull rod passes through the to-be-locked roller, the working shaft, the locking device cylinder, the locking device piston, and the locking and loosening of the pull rod are realized through the clamping half ring.

[0012] Optionally, the to-be-locked roller and the working shaft are locked and loosened through the movement of the locking device cylinder.

[0013] Optionally, one side cavity of the locking device piston is connected to the high-pressure oil port through a high-pressure needle valve.

[0014] A locking method, the to-be-locked roller is connected with the working shaft through the pull rod, the locking device that provides the locking force through the hydraulic oil is arranged on the working shaft, and the locking, pressure maintaining, and loosening of the to-be-locked roller are realized through the locking device.

[0015] The locking method is applied to one or more of the following scenes:

[0016] (1) fixing and replacing of metal saw blades;

[0017] (2) locking and loosening of ship cable winding drums;

[0018] (3) locking and loosening of crane driving devices;

[0019] (4) locking and loosening of straightening rollers.

[0020] The present application has the following beneficial effects:

[0021] The present application connects the to-be-locked roller with the working shaft through the pull rod, realizes the quick locking / loosening of the to-be-locked roller and the quick clamping / loosening of the pull rod, and provides sufficient locking force. Therefore, the device mainly includes a locking device cylinder, a clamping cylinder, and a pipeline system connected thereto, the clamping cylinder realizes the quick clamping / loosening of the pull rod, the locking device cylinder realizes the quick locking / loosening of the to-be-locked roller, and the pipeline system is responsible for the normal operation of the hydraulic cylinder and provides sufficient pressure. The pressure maintaining of the clamping cylinder is realized through a low-pressure needle valve, and sufficient clamping force is provided. The pressure maintaining of the locking device cylinder is realized through a high-pressure needle valve, and sufficient locking force is provided. Through the present application, the to-be-locked roller can be quickly locked and sufficient locking force can be provided, so that the straightening machine can meet the needs of production and quick roller replacement.

[0022] Other advantages, objects, and features of the present application will be set forth in part in the following specification taken in conjunction with the accompanying drawings, and in part will be apparent to those skilled in the art from the following description, or can be learned from the practice of the present application. The objects and other advantages of the present application can be realized and obtained by means of the following description. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to make the objects, technical solutions and advantages of the present application clearer, the preferred embodiments of the present application will be described in detail below with reference to the drawings, in which:

[0024] Fig. 1 is a schematic diagram of the overall structure of the present application;

[0025] Fig. 2 is a working schematic diagram of the present application in the locked state of the straightening roller;

[0026] Fig. 3 is a working schematic diagram of the present application in the unlocked state of the straightening roller;

[0027] Fig. 4 is an end view of the locking structure of the present application.

[0028] 1 - working shaft; 2 - locking device cylinder; 3 - pull rod; 4 - straightening roller; 5 - locking device piston; 6 - clamping cylinder; 7 - guide rod; 8 - clamping half ring; 9 - low-pressure needle valve; 10 - clamping cylinder stop valve; 11 - high-pressure needle valve; A - high-pressure oil port; B - low-pressure oil port DETAILED DESCRIPTION

[0029] The embodiments of the present application are described below through specific examples, and other advantages and effects of the present application can be easily understood by those skilled in the art from the disclosure of the present specification. The present application can also be implemented or applied through other different embodiments, and each detail in the present specification can be modified or changed based on different views and applications without departing from the spirit of the present application. It should be noted that the drawings provided in the following embodiments only illustrate the basic concept of the present application in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0030] The drawings are only used for illustrative explanation, and the representation is only a schematic diagram, not a physical diagram, and should not be understood as a limitation of the present application; in order to better illustrate the embodiments of the present application, some components in the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; it can be understood by those skilled in the art that some well-known structures and their descriptions in the drawings may be omitted.

[0031] The same or similar reference numerals in the drawings of the embodiments of the present application correspond to the same or similar components; in the description of the present application, it should be understood that the orientations or positional relationships indicated by terms such as 'upper', 'lower', 'left', 'right', 'front', 'back' and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore the terms describing the positional relationships in the drawings cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the terms describing the positional relationships in the drawings are only used for exemplary illustration and cannot be understood as limiting the present application, and for those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0032] Please refer to Figs. 1-4 The device mainly comprises a locking device cylinder 2, a clamping cylinder 6 and a pipeline system connected thereto, the clamping cylinder 6 realizes quick clamping and loosening of the pull rod 3, the straightening roller 4 in the present application is taken as an example for description, the locking device cylinder 2 is used to realize quick locking and loosening of the straightening roller 4, and the pipeline system is responsible for normal operation of the hydraulic cylinder and provides sufficient pressure.

[0033] The clamping step of the clamping cylinder 6 is that the high-pressure needle valve 11 is closed, the low-pressure needle valve 9 and the clamping cylinder stop valve 10 are opened, the high-pressure oil port A is supplied with oil, the low-pressure oil port B is returned with oil, and the clamping cylinder 6 clamps the pull rod 3 through the clamping half ring 8.

[0034] The loosening step of the clamping cylinder 6 is that the high-pressure needle valve 11 is closed, the low-pressure needle valve 9 and the clamping cylinder stop valve 10 are opened, the low-pressure oil port B is supplied with oil, the high-pressure oil port A is returned with oil, and the clamping half ring 8 of the clamping cylinder 6 loosens the pull rod 3.

[0035] The locking step of the locking device cylinder 2 is that the high-pressure needle valve 11 is opened, the low-pressure needle valve 9 and the clamping cylinder stop valve 10 are closed, the high-pressure oil port A is supplied with oil, the low-pressure oil port B is returned with oil, the high-pressure needle valve 11 is closed after the high-pressure oil way pressure reaches the design value, and the straightening roller 4 is locked.

[0036] The loosening step of the locking device cylinder 2 is that the high-pressure needle valve 11 is opened, the low-pressure needle valve 9 and the clamping cylinder stop valve 10 are closed, the low-pressure oil port B is supplied with oil, the high-pressure oil port A is returned with oil, and the clamping half ring 8 and the straightening roller 4 are loosened.

[0037] Another object of the present application is to realize pressure maintenance for the locking device cylinder 2 in rotary motion, to ensure that the straightening roller 4 is locked within a preset time, and therefore the high-pressure needle valve 11 is arranged to realize pressure maintenance without oil pressure compensation.

[0038] The application can realize pressure maintaining of the super-high pressure system, so as to achieve the locking purpose, and can be applied to other places with similar requirements. The working shaft 1 is fixed with the locking device cylinder 2, two clamping cylinders 6 arranged symmetrically are connected with the locking device cylinder 2 through guide rods 7, and two clamping half rings 8 realize simultaneous clamping and loosening movement under the action of hydraulic pressure.

[0039] The left oil cavity of the locking device cylinder 2 is connected with the oil path A through the high-pressure needle valve 11, the right oil cavity is connected with the oil path B, the rodless cavity of the two clamping cylinders 6 is connected with the oil path A through the low-pressure needle valve 9, and the rod cavity is connected with the oil path B through the clamping cylinder stop valve 10.

[0040] The locking process of the straightening roller 4: the high-pressure needle valve 11 is closed, the low-pressure needle valve and the clamping cylinder stop valve 10 are opened, the oil is fed in the A path, the oil is returned in the B path, the clamping cylinder 6 clamps the pull rod 3 through the clamping half ring 8, then the low-pressure needle valve 9 and the clamping cylinder stop valve 10 are closed; the high-pressure needle valve 11 is opened, the oil is fed in the A path, the oil is returned in the B path, the high-pressure needle valve 11 is closed after the oil pressure in the A path reaches the design value, and the locking of the straightening roller 4 is completed.

[0041] The loosening process of the straightening roller 4: the high-pressure needle valve 11 is opened to release pressure, then the oil is fed in the B path, the oil is returned in the A path, the clamping half ring 8 is loosened by moving the locking device piston 5 to the left; the high-pressure needle valve 11 is closed, the low-pressure needle valve 9 and the clamping cylinder stop valve 10 are opened, the oil is fed in the B path, the oil is returned in the A path, and the straightening roller 4 is loosened after the clamping half ring 8 is loosened.

[0042] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the application and are not limited. Although the application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the application can be modified or replaced equivalently without departing from the purpose and scope of the technical solutions, which should be covered in the scope of the claims of the application.

Claims

1. A locking structure, characterized by: The locking device cylinder is fixedly arranged on the working shaft, and a locking device piston is arranged in the locking device cylinder; one side cavity of the locking device piston is connected to a high-pressure oil port, and the other side cavity is connected to a low-pressure oil port; a pull rod connecting the to-be-locked roller and the working shaft is further arranged, the locking device piston is arranged on the pull rod, and the pull rod penetrates through the locking device cylinder; wherein, A guide rod is arranged outside the locking device, the guide rod is provided with a clamping cylinder outside, the clamping cylinder is symmetrically provided with two, the clamping cylinder is provided with a clamping half ring on the side facing the pull rod, and the clamping and loosening of the pull rod are realized by moving the clamping cylinder in the direction close to or away from the pull rod; the one side cavity of the locking device piston is connected to the high-pressure oil port through a high-pressure needle valve; The rodless cavity of the clamping cylinder is connected to the high-pressure oil port through a low-pressure needle valve; the rod cavity of the clamping cylinder is connected to the low-pressure oil port through a clamping cylinder stop valve.

2. The locking structure according to claim 1, characterized in that: The pull rod penetrates through the to-be-locked roller, the working shaft, the locking device cylinder, the locking device piston, and the clamping half ring, so as to realize the locking and loosening of the pull rod.

3. The locking structure according to claim 1, wherein: The to-be-locked roller and the working shaft are locked and loosened through the movement of the locking device cylinder.

4. A locking method, characterized by, The to-be-locked roller and the working shaft are connected through the pull rod, a locking device for providing locking force through hydraulic oil is arranged on the working shaft, the locking, pressure maintaining and loosening of the locking roller are realized through the locking device, and the locking device adopts the locking structure according to any one of claims 1-3.

5. The locking method of claim 4, wherein, It is applied to one or more of the following scenarios: (1) fixing and replacing of metal saw blades; (2) locking and loosening of ship cable winding drums; (3) locking and loosening of crane driving devices; (4) locking and loosening of straightening rollers.

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