CN115647058A - Locking structure and locking method - Google Patents

Abstract

The invention relates to a locking structure and a locking method, and belongs to the field of metal rolling equipment. A locking device cylinder body is fixedly arranged on the working shaft, and a locking device piston is arranged in the locking device cylinder body; a cavity on one side of the locking device piston is connected to the high-pressure oil port, and a cavity on the other side of the locking device piston is connected to the low-pressure oil port; the straightening device is characterized by further comprising a pull rod for connecting the straightening roller and the working shaft, wherein the locking device piston is arranged on the pull rod, and the pull rod penetrates through the locking device cylinder body. The invention connects the straightening roller and the working shaft through the pull rod, realizes the quick locking/loosening of the straightening roller and the quick locking/loosening of the pull rod, and provides enough locking force. By the invention, the straightening roll can be quickly locked and can provide enough locking force, so that the straightening machine can meet the requirements of production and quick roll change.

Description

Locking structure and locking method

technical field

The invention belongs to the field of metal rolling equipment and relates to a locking structure.

Background technique

Straightening is an extremely important process for metal materials, which determines the quality level of the product. During the production process, due to changes in product specifications and wear of the straightening rollers, the straightening rollers need to be replaced frequently. In order to quickly change the roll, it is necessary to adopt a keyless connection form that is easy to disassemble. In order to transmit the straightening torque and overcome the straightening force, it is necessary to generate sufficient friction between the tapered surface of the straightening roll and the working shaft through a huge pressing force. Force, so as to achieve the purpose of straightening the product.

However, the traditional hydraulic nut expansion sleeve method requires manual tightening of the nut, which has high working intensity and uncontrollable operating time and locking force. This method not only puts higher requirements on the operator, but also reduces the locking reliability of the straightening roller. Sex, and greatly increased the roll change time, not suitable for the needs of multi-roll fast roll change.

Contents of the invention

In view of this, the object of the present invention is to provide a locking structure, and to design a new locking structure that can realize fast locking and provide sufficient locking force, so as to overcome the above-mentioned problems and ensure that the straightening machine meets the requirements of production and straightening. The need for quick roll changes.

To achieve the above object, the present invention provides the following technical solutions:

A locking structure, a 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 One side cavity is connected to the low-pressure oil port; it also includes a tie rod connecting the roller to be locked and the working shaft, the locking device piston is set on the tie rod, and the tie rod is set through the locking device cylinder .

Optionally, a guide rod is provided outside the locking device.

Optionally, a clamping cylinder is provided on the outside of the guide rod, two of the clamping cylinders are arranged symmetrically, and a clamping half ring is provided on the side of the clamping cylinder facing the pull rod, through which the clamping cylinder The tightening cylinder moves toward or away from the pull rod to realize the tightening and loosening of the pull rod.

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

Optionally, the rod chamber of the clamping cylinder is connected to the low-pressure oil port through the clamping cylinder cut-off valve.

Optionally, the pull rod passes through the roller to be locked, the working shaft, the cylinder of the lock device, and the piston of the lock device, and the lock and release of the pull rod are realized by tightening the half ring.

Optionally, the locking and loosening of the roller to be locked and the working shaft can be realized through the movement of the cylinder of the locking device.

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

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

The locking method is applied to one or more of the following scenarios:

(1) Fixing and replacement of metal saw blades;

(2) Locking and loosening of the ship's cable drum;

(3) Locking and loosening of the crane driving device;

(4) Locking and loosening of straightening rollers.

The beneficial effects of the present invention are:

The invention connects the roller to be locked and the working shaft through a tie rod, realizes fast locking/releasing of the roller to be locked and fast embracing/releasing of the tie 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 fast clamping/releasing of the tie rod, and the locking device cylinder realizes fast locking of the locking roller. Locking/releasing, the pipeline system is responsible for the normal operation of the hydraulic cylinder and providing sufficient pressure. The low-pressure needle valve is used to maintain the pressure of the locking cylinder and provide sufficient locking force; the high-pressure needle valve is used to maintain the pressure of the locking device cylinder to provide sufficient locking force. Through the present invention, the locking rolls to be locked can be quickly locked and sufficient locking force can be provided, so as to ensure that the straightening machine meets the requirements of production and quick roll change.

Other advantages, objects and features of the present invention will be set forth in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the investigation and research below, or can be obtained from It is taught in the practice of the present invention. The objects and other advantages of the invention may be realized and attained by the following specification.

Description of drawings

In order to make the purpose of the present invention, technical solutions and advantages clearer, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

Fig. 1 is a schematic diagram of the overall structure of the present invention;

Fig. 2 is the working schematic diagram under the locking state of the straightening roller of the present invention;

Fig. 3 is the working schematic diagram under the unclamped state of straightening roller of the present invention;

Fig. 4 is an end view of the locking structure of the present invention.

1—working shaft; 2—cylinder of locking device; 3—tie rod; 4—straightening roller; 5—piston of locking device; 6—holding cylinder; 7—guide rod; 8—holding half ring; 9— Low-pressure needle valve; 10—holding cylinder shut-off valve; 11—high-pressure needle valve; A—high-pressure oil port; B—low-pressure oil port Specific implementation

Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic concept of the present invention, and the following embodiments and the features in the embodiments can be combined with each other in the case of no conflict.

Wherein, the accompanying drawings are for illustrative purposes only, and represent only schematic diagrams, rather than physical drawings, and should not be construed as limiting the present invention; in order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, Enlargement or reduction does not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings.

In the drawings of the embodiments of the present invention, the same or similar symbols correspond to the same or similar components; , "front", "rear" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred devices or elements must It has a specific orientation, is constructed and operated in a specific orientation, so the terms describing the positional relationship in the drawings are for illustrative purposes only, and should not be construed as limiting the present invention. For those of ordinary skill in the art, the understanding of the specific meaning of the above terms.

Please refer to Figures 1 to 4, the device mainly includes a locking device cylinder 2, a tightening cylinder 6 and a pipeline system connected thereto, and the tightening cylinder 6 realizes fast tightening/releasing of the tie rod 3. The to-be-locked roll in the illustration is illustrated by taking the straightening roll 4 as an example. The fast locking/releasing of the straightening roll 4 is realized through the locking device cylinder 2, and the pipeline system is responsible for the normal operation of the hydraulic cylinder and providing sufficient pressure.

The clamping steps of the clamping cylinder 6 are as follows: the high-pressure needle valve 11 is closed, the low-pressure needle valve 9 and the clamping cylinder cut-off valve 10 are opened, the high-pressure oil port A enters oil, the low-pressure oil port B returns oil, and the clamping cylinder 6 passes through. Hold the half ring 8 and hold the pull rod 3 tightly.

The loosening steps of the clamping cylinder 6 are as follows: 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 enters oil, the high-pressure oil port A returns oil, and the clamping cylinder 6 Hold the half ring 8 tightly and release the pull rod 3 .

The locking steps of the cylinder body 2 of the locking device are as follows: open the high-pressure needle valve 11, close the low-pressure needle valve 9 and the shut-off valve 10 of the holding cylinder, enter oil from the high-pressure oil port A, return oil to the low-pressure oil port B, and wait for the high-pressure oil to After the road pressure reaches the design value, the high-pressure needle valve 11 is closed to lock the straightening roller 4.

The steps for releasing the cylinder body 2 of the locking device are as follows: open the high-pressure needle valve 11, close the low-pressure needle valve 9 and the shut-off valve 10 of the locking cylinder, enter oil from the low-pressure oil port B, and return oil to the high-pressure oil port A to realize the locking The unclamping of tight half ring 8 and straightening roller 4.

Another purpose of the present invention is to maintain the pressure on the cylinder 2 of the locking device in the rotating motion to ensure that the straightening roller 4 is locked within the preset time. Therefore, a high-pressure needle valve 11 is provided. In the case of no oil pressure compensation Realize holding pressure.

Through the connection and structural arrangement of the above-mentioned pipelines, the present invention can realize the pressure maintenance of the ultra-high pressure system, so as to achieve the purpose of locking, and the method can be applied to other places with similar requirements. The working shaft 1 is fixed together with the cylinder body 2 of the locking device, and two symmetrically arranged locking cylinders 6 are connected to the cylinder body 2 of the locking device through the guide rod 7, and the two locking half rings 8 realize simultaneous Clamping and loosening movement.

The left oil chamber of the locking device cylinder 2 is connected to the oil circuit A through the high-pressure needle valve 11, the right oil chamber is connected to the oil circuit B, and the rodless chambers of the two locking cylinders 6 are connected to the oil circuit A through the low-pressure needle valve 9, with rods The cavity is connected to the oil passage B through the shut-off valve 10 of the clinging cylinder.

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 cut-off valve 10 are opened, the oil enters the A circuit, the B circuit returns the oil, and the clamping cylinder 6 clamps the tie rod 3 through the clamping half ring 8 , then the low-pressure needle valve 9 and the clamping cylinder cut-off valve 10 are closed; the high-pressure needle valve 11 is opened, oil enters the A circuit, and oil returns to the B circuit. After the oil pressure of the A circuit reaches the design value, the high-pressure needle valve 11 is closed, and the straightening roller 4 Locking is complete.

The loosening process of the straightening roller 4: the high-pressure needle valve 11 is opened to release the pressure, then the oil enters the B road, and the A road returns the oil, and the locking device piston 5 moves to the left to loosen the half-ring 8; the high-pressure needle valve 11 is closed, and the low-pressure needle Valve 9 and clamping cylinder cut-off valve 10 are opened, oil is fed into circuit B, and oil is returned to circuit A. After the clamping half ring 8 is released, the straightening roller 4 is completely released.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be carried out Modifications or equivalent replacements, without departing from the spirit and scope of the technical solution, should be included in the scope of the claims of the present invention.

Claims (10)

1. A locking structure, characterized in that: a locking device cylinder is fixedly arranged on the working shaft, a locking device piston is arranged in the locking device cylinder; one side cavity of the locking device piston is connected to to the high-pressure oil port, and the cavity on the other side is connected to the low-pressure oil port; it also includes a tie rod connecting the roller to be locked and the working shaft, the locking device piston is set on the tie rod, and the tie rod runs through the Locking device cylinder set. 2. The locking structure according to claim 1, characterized in that: a guide rod is provided outside the locking device. 3. The locking structure according to claim 2, wherein a locking cylinder is arranged outside the guide rod, two of the locking cylinders are arranged symmetrically, and the locking cylinders face toward the side of the tie rod. One side is provided with a tightening half ring, and the tightening and loosening of the tie rod can be achieved by the movement of the tightening cylinder in a direction approaching or away from the pull rod. 4. The locking structure according to claim 3, characterized in that: the rodless chamber of the clamping cylinder is connected to the high-pressure oil port through a low-pressure needle valve. 5. The locking structure according to claim 3, characterized in that: the rod chamber of the clamping cylinder is connected to the low-pressure oil port through the clamping cylinder cut-off valve. 6. The locking structure according to claim 3, characterized in that: the pull rod passes through the roller to be locked, the working shaft, the cylinder body of the locking device, and the piston of the locking device, and the locking of the pull rod is realized by tightening the half ring. Lock and loosen. 7. The locking structure according to claim 1, characterized in that: the lockable roller and the working shaft are locked and released by the movement of the cylinder of the locking device. 8. The locking structure according to claim 1, characterized in that: the cavity on one side of the piston of the locking device is connected to the high-pressure oil port through a high-pressure needle valve. 9. A locking method, characterized in that the roller to be locked is connected to the working shaft through a pull rod, a locking device that provides locking force through hydraulic oil is provided on the working shaft, and the locking of the roller is realized through the locking device. Locking, holding pressure, loosening. 10. The locking method according to claim 9, characterized in that it is applied to one or more of the following scenarios: (1) Fixing and replacement of metal saw blades; (2) Locking and loosening of the ship's cable drum; (3) Locking and loosening of the crane driving device; (4) Locking and loosening of straightening rollers.

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