CN219378429U - A balance beam type roller changing device - Google Patents

Abstract

The utility model relates to a balance beam type roller changing device, belonging to the technical field of metallurgical equipment, comprising an I-shaped beam, one end of the beam is connected with a roll changing joint to fix the rollers, a weight balancing device is arranged on the lower side of the middle of the beam, the weight balancing device includes a lead screw, a driving device connected with the lead screw, a counterweight connection seat forming a screw nut pair with the lead screw, a counterweight block connected with the counterweight connection seat, a roller mounted on the counterweight connection seat and hung in the cavity between two wing plates of the beam, and a counterweight connection The seat includes a counterweight connection seat body, the counterweight connection seat body has a first non-rotationally symmetrical limiting hole, and a slider with a cross-sectional size smaller than the first limiting hole is provided in the first limiting hole so that the slider can move in the circumferential direction, and the slider and the lead screw form a screw nut pair. The sliding block of the utility model can move in the circumferential direction, and the lead screw does not bear the pressure of the beam during storage, so that it does not need to be supported by a special support during storage, and can be stacked directly, reducing the use and maintenance cost.

Description

A balance beam type roller changing device

technical field

The utility model belongs to the technical field of metallurgical equipment and relates to a balance beam type roller changing device.

Background technique

In mechanical equipment, especially metallurgical equipment, various rollers are used, and the rollers will gradually wear out during work. When the rollers are worn to a certain extent, they need to be replaced.

Roller changing devices mainly include C-type hook-type roller-changing device, balance beam-type roller-changing device and roller-changing trolley. The C-type hook-type roll changing device is suitable for the open and unobstructed environment above the rolls; the roll changing trolley can change the rolls from the side, which is suitable for the situation where the operating side or the transmission side of the rolls is unobstructed, and the foundation is suitable for installing the roll changing trolley; the balance beam type roll changing device does not need to be installed on the foundation, and the rolls can be changed from the side.

The balance beam type roll changing device generally uses a screw to drive the counterweight to realize the weight balance of the roll changing device during no-load and roll changing. Both ends of the screw are installed on the bearing housing, and the middle passes through the screw nut that is fixedly connected with the counterweight. Therefore, a screw is constrained by three points, and the coaxiality must be guaranteed, which requires high installation requirements. Improper installation and use may cause the screw to rotate inflexibly or even get stuck.

In addition, when the roll changing device is stored, a special support is required, which increases the cost; instead of being stacked directly without a support, the balance beam will press the weight on the lead screw, which will cause the lead screw to deform and affect subsequent use.

Utility model content

In view of this, the purpose of this utility model is to provide a balance beam type roller changing device, so as to realize direct stacking during storage, and no longer need to use a special support for support.

In order to achieve the above object, the utility model provides the following technical solutions:

A balance beam type roller changing device, comprising an I-shaped beam, one end of the beam is connected with a roll changing joint to fix the rollers, and a weight balancing device is provided on the lower side of the middle of the beam, the weight balancing device includes a lead screw, a driving device connected with the lead screw, a counterweight connection seat forming a screw nut pair with the lead screw, a counterweight block connected with the counterweight connection seat, a roller mounted on the counterweight connection seat and hung in the cavity between two wing plates of the beam, the counterweight connection seat includes a counterweight connection seat body, a counterweight The connecting seat body has a non-rotationally symmetrical first limiting hole, and a slider with a cross-sectional size smaller than the first limiting hole is provided in the first limiting hole to allow the slider to move in the circumferential direction, and the slider and the lead screw form a screw nut pair.

Optionally, the slider includes a slider body, and the slider body is provided with a second limiting hole. The middle part of the second limiting hole has a cylindrical hole arranged in a cross with the axis of the screw and perpendicular to the beam flange. A cylindrical nut is slidably connected to it in the cylindrical hole. The cylindrical nut and the lead screw form a screw nut pair, and the minimum diameter of the second limit hole is greater than the outer diameter of the screw.

Optionally, the first limiting hole is rectangular, and one side of the first limiting hole is parallel to the beam flange.

Optionally, a first sliding plate is fixed at both ends of the first limiting hole, a second sliding plate is fixed at both ends of the sliding block and is slidably connected to the first sliding plate, and the second sliding plate does not protrude from the circumferential direction of the sliding block.

Optionally, a pointer is installed on the counterweight connecting seat, and a scale is installed on the beam, so as to mark the position of the counterweight in the two states of no-load and roller changing through the pointer pointing to the position of the scale.

Optionally, the driving device is a reduction motor, a hydraulic motor or a manually adjusted hand wheel.

Optionally, the driving device is located at one end of the lead screw close to the roll changing joint.

Optionally, at least one fastening bolt is provided in the circumferential direction of the roll changing joint to fix the rolls.

Optionally, two lifting lugs are arranged at intervals on the upper side of the beam, and the lifting lugs are connected with a hanger, and the hanger is a wire rope hanger or a chain hanger.

The beneficial effect of the utility model is that the slider can move in the circumferential direction, so that the lead screw does not bear the pressure of the beam during storage, so it does not need to be supported by a special support during storage, and can be stacked directly, reducing the cost of use and maintenance, and has the characteristics of simple structure, less investment and long life.

Other advantages, objectives and features of the present utility model 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 taught from the practice of the present utility model. The objectives and other advantages of the utility model can be realized and obtained through the following description.

Description of drawings

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

Fig. 1 is the structural representation of a kind of balance beam type roller changing device of the present utility model;

Fig. 2 is A-A sectional view of Fig. 1;

Fig. 3 is the B-B sectional view of Fig. 2;

Fig. 4 is another structure of the B-B sectional view of Fig. 2 .

Reference signs: roll changing joint 1, beam 2, weight balance device 3, fastening bolt 4, lead screw 5, counterweight 6, counterweight connecting seat 7, roller 8, slider assembly 9, driving device 10, bearing seat 11, slider 12, first slide 13-1, second slide 13-2, cylindrical nut 14, pointer 15, scale 16, lifting lug 17, first limit hole 18, second limit hole 19.

Detailed ways

The implementation of the present utility model is described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. The utility model can also be implemented or applied through other different specific implementation modes, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the utility model. It should be noted that the illustrations provided in the following embodiments are only schematically illustrating the basic idea of the present utility model, and the following embodiments and the features in the embodiments can be combined with each other in the case of no conflict.

Wherein, accompanying drawing is only for illustrative illustration, and what represent is only schematic diagram, rather than actual figure, can not be understood as the restriction to the present utility model; In order to better explain the embodiment of the present utility model, some parts of accompanying drawing will be omitted, enlarged or reduced, and do not represent the size of actual product; For those skilled in the art, it is understandable that some known structures and their descriptions in the accompanying drawings may be omitted.

In the accompanying drawings of the embodiments of the utility model, the same or similar symbols correspond to the same or similar parts; in the description of the utility model, it should be understood that if the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", and "rear" is based on the orientation or positional relationship shown in the accompanying drawings, it is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, and be configured and operated in a specific orientation. The terms of positional relationship are used for illustrative purposes only, and should not be construed as limitations on the present utility model. Those of ordinary skill in the art can understand the specific meanings of the above terms according to specific situations.

Please refer to Fig. 1-Fig. 4, a kind of balance beam type roller changing device, including I-shaped beam 2, one end of beam 2 is connected with roll changing joint 1 to fix the roller, the middle and lower side of beam 2 is provided with weight balance device 3, weight balance device 3 includes lead screw 5, drive device 10 connected with lead screw 5, counterweight connecting seat 7 forming lead screw nut pair with lead screw 5, counterweight 6 connected with counterweight connecting seat 7, installed on counterweight connecting seat 7 and hung on the two wings of beam 2 The roller 8 at the cavity position between the plates, the counterweight connecting seat 7 includes a counterweight connecting seat body, the counterweight connecting seat body has a first non-rotationally symmetrical limiting hole 18, and the first limiting hole 18 is provided with a slider 12 whose cross-sectional size is smaller than the first limiting hole 18 so that the slider 12 can move in the circumferential direction, and the slider 12 and the leading screw 5 form a screw nut pair. The upper side of the beam 2 is provided with two lifting lugs 17 at intervals, and the lifting lugs 17 are connected with a sling, and the sling can be a wire rope sling or a chain type sling. At least one fastening bolt 4 is provided in the circumferential direction of the roll changing joint 1 to fix the rolls.

The slider 12 of the utility model can move in the circumferential direction, which reduces the constraint points of the lead screw 5 and improves the rotation flexibility of the lead screw 5. The lead screw 5 does not bear the pressure of the beam 2 during storage, so no special support is required during storage, and it can be stacked directly, reducing the cost of use and maintenance, and has the characteristics of simple structure, less investment and long life.

In order to further improve the rotation flexibility of the lead screw, the utility model has also increased a degree of freedom. The implementation method is: the slider 12 is made as a split structure. The slider 12 includes a slider body. 5 outside diameter. This kind of structure can ensure that the rotation of the lead screw 5 is flexible when the lead screw 5 is not installed parallel to the beam 2 and has an included angle.

The cross-section of the first limiting hole 18 of the present invention can be polygonal, preferably rectangular. When it is rectangular, one side of the first limiting hole 18 is parallel to the wing plate of the beam 2 .

In order to maintain and reduce costs, the utility model adds a wear-resistant structure to the parts that are easy to wear, namely, a first slide plate 13-1 is fixed at both ends of the first limiting hole 18, and a second slide plate 13-2 that is slidably connected with the first slide plate 13-1 is fixed at both ends of the slide block 12. The second slide plate 13-2 does not protrude from the circumference of the slide block 12. The first slide plate 13-1 and the second slide plate 13-2 should be installed in a removable manner.

In order to facilitate the adjustment of the roller changing device, the utility model is equipped with a pointer 15 on the counterweight connecting seat 7, and a scale 16 is installed on the beam 2, so as to mark the position of the counterweight 6 under no-load and roll changing states by pointing to the position of the scale through the pointer 15. This setting method enables the operator to quickly adjust the roll changing device to achieve a balanced state.

The driving device 10 of the present invention can be a reduction motor, a hydraulic motor or a manually adjusted hand wheel, and the installation position of the driving device 10 is preferably located at the end of the lead screw 5 close to the roll changing joint 1 . This arrangement enables the operator to observe the balance state of the roller while moving the counterweight, reducing the number of operators.

Example

A balance beam type roll changing device, comprising a roll changing joint 1, a beam 2, and a weight balancing device 3. One end of the beam 2 is connected with a roll changing joint 1, and a plurality of fastening bolts 4 for clamping the rolls are arranged on the roll changing joint 1. The upper part of the beam is provided with two lifting lugs 17, and the lifting lugs 17 are connected with a wire rope sling or a chain sling. The lower part of the beam 2 is provided with a weight balancing device 3 . The weight balancing device 3 includes a lead screw 5 , a counterweight 6 , a counterweight connection seat 7 , a roller 8 , a slider assembly 9 and a lead screw driving device 10 . The weight balancing device 3 is hung on the wing plate at the bottom of the crossbeam by rollers 8, and four rollers 8 are preferably provided. The lead screw 5 passes through the slider assembly 9, and the two ends are fixed on the lower side of the beam 2 through the bearing housing 11.

The slider assembly 9 includes a slider 12, a first slider 13-1, and a second slider 13-2. The slider 12 is located in the first limiting hole 18 of the counterweight connection seat 7. The first slider 13-1 is installed at both ends of the slider 12. The second slider 13-2 is installed on the inner wall of the first limiting hole 18. There is a certain clearance between the first limiting hole 18 and the slider 12 so that the slider 12 can slide in the first limiting hole 18. There are two ways to connect the slider to the lead screw:

Mode 1: tap the threaded hole in the center of the slider 12 , and the lead screw 5 passes through the threaded hole of the slider 12 . When the weight balancing device 3 moves along the lead screw 5, because the slider 12 can move circumferentially in the first limiting hole 18, the lead screw 5 is only restricted by the bearing seats 11 at both ends, and the rotation is smooth and flexible.

Mode 2: drill a round hole in the center of the slider 12, install a cylindrical nut 14 in the round hole, and the lead screw 5 passes through the threaded hole provided on the cylindrical nut 14. When the weight balancing device 3 moves along the lead screw 5, in addition to the circumferential movement of the slider 12, the cylindrical nut 14 can also rotate around its axis. When the installation of the leading screw 5 is not parallel to the beam 2 and an included angle occurs, the flexible rotation of the leading screw 5 can still be guaranteed.

Another advantage brought by the above two methods is that when the roller changing device is not in use, no special support is needed, and the beam 2 can be pressed on the weight balance device 3 3. At this time, the lead screw 5 moves with the beam 2 under the drive of the bearing seats 11 at both ends, and the slider 12 in the middle moves together with the lead screw 5 to ensure that the center of the lead screw 5 is not stressed, so it will not be deformed.

One end of the lead screw 5 is connected with a driving device 10, and the driving device 10 can be a manually adjusted handwheel, or a geared motor or a hydraulic motor. The installation position of the driving device 10 is preferably on the side of the roll changing joint, and the operator can move the counterweight while observing the balance state of the rolls, reducing the number of operators.

A pointer 15 is installed on the counterweight connecting seat 7, and a scale 16 is provided on the beam, so that the position of the counterweight 6 under two states of no-load and roll changing can be marked, and the operator can quickly adjust the roll changing device to reach a balanced state.

The new type of equipment has a simple and reasonable structure, fewer lead screw constraint points, flexible rotation, and low requirements for processing and installation precision; the equipment does not need a special support for storage, and can be stacked directly, which solves the problem of easy deformation and jamming of the lead screw of the counterweight balance beam roller changing device, and makes the roll changing device no longer needs a special support for storage, reducing the implementation cost.

Finally, it is noted that the above embodiments are only used to illustrate the technical solution of the utility model without limitation. Although the utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solution of the utility model can be modified or equivalently replaced without departing from the purpose and scope of the technical solution, which should be included in the claims of the utility model.

Claims (9)

1. A balance beam type roller changing device, comprising an I-shaped crossbeam, one end of the crossbeam is connected with a roll changing joint to fix the rollers, a weight balancing device is provided on the lower side of the middle part of the crossbeam, and the weight balancing device includes a lead screw, a driving device connected to the lead screw, a counterweight connecting seat forming a screw nut pair with the leading screw, a counterweight connected to the counterweight connecting seat, a roller mounted on the counterweight connecting seat and hung on the cavity position between the two wing plates of the cross beam, characterized in that: the counterweight connecting seat includes a counterweight The connecting seat body and the counterweight connecting seat body have a non-rotationally symmetrical first limiting hole. A slider with a cross-sectional size smaller than the first limiting hole is provided in the first limiting hole so that the slider can move in the circumferential direction. The slider and the lead screw form a screw nut pair. 2. A balance beam type roller changing device according to claim 1, wherein the slider comprises a slider body, the slider body is provided with a second limiting hole, the middle of the second limiting hole has a cylindrical hole arranged as a cross with the axis of the lead screw and perpendicular to the beam flange, a cylindrical nut slidingly connected to it is provided in the cylindrical hole, the cylindrical nut and the lead screw form a screw nut pair, and the minimum diameter of the second limit hole is larger than the outer diameter of the lead screw. 3 . The balance beam type roller changing device according to claim 1 , wherein the first limiting hole is rectangular, and one side of the first limiting hole is parallel to the beam wing. 4 . 4. A balance beam type roller changing device according to claim 1, wherein a first slide plate is fixed at both ends of the first limiting hole, and a second slide plate slidably connected with the first slide plate is fixed at both ends of the slide block, and the second slide plate does not protrude from the circumference of the slide block. 5. A balance beam type roller changing device according to claim 1, characterized in that: a pointer is installed on the counterweight connecting seat, and a scale is installed on the crossbeam, so as to mark the position of the counterweight under the two states of no-load and roll changing through the position of the pointer pointing to the scale. 6. A balance beam type roller changing device according to claim 1, characterized in that: the driving device is a geared motor, a hydraulic motor or a manually adjusted hand wheel. 7 . The balance beam type roll changing device according to claim 1 , wherein the driving device is located at the end of the lead screw close to the roll changing joint. 8 . 8 . The balance beam type roll changing device according to claim 1 , characterized in that: at least one fastening bolt is provided in the circumferential direction of the roll changing joint to fix the roll. 9. A balance beam type roller changing device according to claim 1, characterized in that: two lifting lugs are arranged at intervals on the upper side of the beam, the lifting lugs are connected with a lifting device, and the lifting device is a wire rope lifting device or a chain type lifting device.