CN214788687U

CN214788687U - Double-power brake

Info

Publication number: CN214788687U
Application number: CN202120990766.4U
Authority: CN
Inventors: 王玉元; 王金刚; 邹磊明; 王洪涛; 王健
Original assignee: Shandong Iron and Steel Co Ltd
Current assignee: Shandong Iron and Steel Co Ltd
Priority date: 2021-05-10
Filing date: 2021-05-10
Publication date: 2021-11-19
Anticipated expiration: 2031-05-10

Abstract

The utility model discloses a double dynamical stopper, including the base, the base is equipped with electric liquid impeller, enclasping device and two support arms that are parallel to each other, be equipped with the braked wheel between two support arms, one side that the support arm is close to the braked wheel is equipped with the brake shoe, two support arms are articulated with the braked arm, enclasping device, electric liquid impeller all are connected with the braked arm, still include with base fixed connection's supporting seat, with supporting seat rotatable coupling's cam and drive cam pivoted push rod, electric liquid impeller's ejector pin is equipped with the spout, the braked arm is equipped with the slider with spout joint complex; the cam is abutted with the brake arm, when the lowest point of the cam is contacted with the brake arm, the brake shoe is clasped with the brake wheel, and when the highest point of the cam is contacted with the brake arm, the brake shoe is separated from the brake wheel. Therefore, the electro-hydraulic pusher can still realize the separation of the brake wheel and the brake shoe through the cam structure after failure, thereby avoiding the overflow of molten iron caused by the incapability of swinging of the swinging launder and ensuring the safe discharge of the molten iron.

Description

Double-power brake

Technical Field

The utility model relates to a blast furnace equipment technical field, more specifically say, relate to a double dynamical ware.

Background

The blast furnace swinging launder is used for guiding molten iron smelted by a blast furnace into a molten iron tank from a molten iron ditch, and repeatedly converting an inclination angle according to the liquid level of the molten iron tank in the continuous flowing process of the molten iron so as to meet the tank changing requirement.

In the prior art, the blast furnace swinging launder utilizes the electro-hydraulic pusher to brake, if the electro-hydraulic pusher fails due to emergency power failure or other reasons in the molten iron flowing process, the brake wheel can not rotate, the swinging launder can not swing left and right, and finally a major safety accident that the molten iron overflows is caused.

In summary, how to realize the rotation of the brake wheel after the failure of the electro-hydraulic impeller is a problem to be solved urgently by the technical personnel in the field at present.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a double dynamical stopper can separate braked wheel and brake shoe after the electric liquid impeller became invalid, has avoided the braked wheel locking to lead to the unable accident that continues the swing and make the molten iron spill over of swing chute, has ensured production safety.

In order to achieve the above object, the present invention provides the following technical solutions:

a double-power brake comprises a base, wherein the base is provided with an electro-hydraulic pusher, a holding device and two supporting arms which are parallel to each other, a brake wheel is arranged between the two supporting arms, a brake shoe is arranged on one side, close to the brake wheel, of each supporting arm, the two supporting arms are hinged with the brake arm, the holding device and the electro-hydraulic pusher are both connected with the brake arm, the double-power brake also comprises a supporting seat fixedly connected with the base, a cam rotatably connected with the supporting seat and a push rod driving the cam to rotate, a push rod of the electro-hydraulic pusher is provided with a sliding groove, and the brake arm is provided with a sliding block in clamping fit with the sliding groove;

the cam is abutted to the brake arm, when the lowest point of the cam is in contact with the brake arm, the brake shoe is clasped with the brake wheel, and when the highest point of the cam is in contact with the brake arm, the brake shoe is separated from the brake wheel.

Preferably, the brake arm is provided with a pulley, and the pulley abuts against the cam.

Preferably, the brake arm is connected with the clasping device through a first pin shaft, and the pulley is sleeved on the first pin shaft.

Preferably, the supporting seat is fixedly connected with the supporting arm relatively close to the clasping device.

Preferably, the cam is connected with the support seat through a third pin shaft, and a connecting line of the third pin shaft and the first pin shaft is perpendicular to the base.

Preferably, the clasping device comprises a shell connected with the base, a screw rod, a nut and a spring are arranged in the shell, one end of the screw rod is connected with the braking arm, and the other end of the screw rod is in threaded connection with the nut;

one end of the spring is abutted to the top surface of the shell, and the other end of the spring is abutted to the nut.

Preferably, the cam comprises a long edge, a short edge perpendicular to the long edge and a transition arc, and the transition arc is connected with the long edge and the short edge.

The utility model provides a double dynamical stopper is when the electricity liquid impeller is out of work, and the brake arm only receives the vertical decurrent power of hugging closely of armful device, and the brake arm pushes down and drives the brake shoe and the braked wheel cohesion of two support arms, and the braked wheel can't rotate.

At the moment, the cam is controlled to rotate through the push rod, the side face, which is used for being in contact with the brake arm, of the cam is gradually changed into a long side from a short side, and due to the fact that the cam is abutted to the brake arm, the brake arm bears vertical upward thrust in the rotating process of the cam, the clamping force of the clamping device is overcome, the two support arms are driven to move upwards, the brake shoe and the brake wheel of each support arm are separated, and the brake wheel can continue to rotate.

Therefore, the utility model provides a double dynamical stopper is after the electric liquid impeller inefficacy, and still accessible cam structure realizes the separation of braked wheel and brake shoe, has avoided the emergence of the unable swing of swing chute, the major accident that the molten iron spills over, has ensured the smooth safe emission of molten iron under the emergency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a dual-power brake according to an embodiment of the present invention in a braking state;

FIG. 2 is a schematic structural diagram of the dual-power brake of FIG. 1 in a non-braking state;

FIG. 3 is a schematic view of the cam and pushrod of FIG. 1;

fig. 4 is a schematic structural view of the clasping device in fig. 1.

In fig. 1-4:

the device comprises a base 1, a support arm 2, a brake shoe 21, a brake wheel 3, a brake arm 4, a holding device 5, a screw rod 51, a shell 52, a spring 53, a nut 54, an electro-hydraulic pusher 6, an ejector rod 61, a support seat 7, a cam 8, a push rod 9 and a pulley 10.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The core of the utility model is to provide a double dynamical stopper can separate braked wheel and brake shoe after the electric liquid impeller inefficacy, has avoided the braked wheel locking to lead to the unable accident that continues the swing and make the molten iron spill over of swing chute, has ensured production safety.

Referring to fig. 1-4, fig. 1 is a schematic structural view of a dual-power brake according to an embodiment of the present invention in a braking state; FIG. 2 is a schematic structural diagram of the dual-power brake of FIG. 1 in a non-braking state; FIG. 3 is a schematic view of the cam and pushrod of FIG. 1; fig. 4 is a schematic structural view of the clasping device in fig. 1.

It should be noted that the highest point of the cam 8 mentioned in this document is a point on the outer edge of the cam 8 farthest from the rotation center of the cam 8, and the lowest point of the cam 8 is a point on the outer edge of the cam 8 closest to the rotation center of the cam 8.

The utility model provides a double dynamical stopper, including base 1, base 1 is equipped with electric liquid impeller 6, cohesion device 5 and two support arms 2 that are parallel to each other, be equipped with braked wheel 3 between two support arms 2, one side that support arm 2 is close to braked wheel 3 is equipped with brake shoe 21, two support arms 2 are articulated with braked arm 4, cohesion device 5, electric liquid impeller 6 all are connected with braked arm 4, still include supporting seat 7 with base 1 fixed connection, cam 8 and the push rod 9 that drives cam 8 and rotate with supporting seat 7 rotatable coupling, the ejector pin 61 of electric liquid impeller 6 is equipped with the spout, braked arm 4 is equipped with the slider with spout joint cooperation; the cam 8 abuts against the brake arm 4, and when the lowest point of the cam 8 contacts the brake arm 4, the brake shoe 21 is engaged with the brake drum 3, and when the highest point of the cam 8 contacts the brake arm 4, the brake shoe 21 is separated from the brake drum 3.

Referring to fig. 1, the support arm 2, the brake wheel 3, the brake arm 4 and the clasping device 5 form a braking system of the dual-power brake, the electro-hydraulic pusher 6 is a main power assembly of the dual-power brake, the electro-hydraulic pusher 6 drives the brake arm 4 to move upward against the clasping force of the clasping device 5, and further the positions of the two support arms 2 hinged to the brake arm 4 are changed, so that the brake shoe 21 is separated from the brake wheel 3; the cam 8 and the push rod 9 are an emergency braking component of the double-power brake and are mainly used for providing upward thrust for the brake arm 4 when the electro-hydraulic impeller 6 fails.

One end of the supporting arm 2 is hinged with the base 1, the other end of the supporting arm 2 is hinged with the brake arm 4, and as the brake arm 4 is positioned at one side of the supporting arm 2, as shown in fig. 1, the supporting arm 2 relatively far away from the brake arm 4 is hinged with the brake arm 4 through an adjusting screw rod and the like.

The structure, dimensions and position of the support arm 2 and the structure, dimensions and arrangement of the brake shoe 21 are determined according to the actual production requirements with reference to the prior art and will not be described in detail herein.

The clasping device 5 is connected with the brake arm 4 to drive the brake arm 4 to press down, and the specific type and size of the clasping device are determined according to actual production needs, which are not described herein again.

A sliding block of the brake arm 4 is matched with a sliding groove of the electro-hydraulic pusher 6, and the sliding block can be a bolt, a convex block or a second pin shaft shown in figure 1 which is arranged to protrude out of the brake arm 4; the electro-hydraulic pusher 6 can be specifically set as common linear displacement power elements such as an electric push rod, a hydraulic cylinder and a cylinder.

The cam 8 is rotatably connected to the supporting seat 7, and the supporting seat 7 is fixedly connected to the base 1, so that the rotation center of the cam 8 is fixed relative to the base 1. And because the cam 8 is abutted with the brake arm 4, the brake arm 4 is lifted by the cam 8 in the process that the cam 8 rotates from the short edge to the long edge, and the brake shoe 21 is further driven to be separated from the brake wheel 3.

The cross section of the cam 8 can be set to any geometric shape as long as the height setting of the highest point and the lowest point meets the requirement and the outer edge of the cam 8 is in smooth transition.

Preferably, referring to fig. 3, the cam 8 includes a long side, a short side perpendicular to the long side, and a transition arc, and the transition arc connects the long side and the short side, so that the structure is simple, the manufacture is easy, the transition is smooth, and the smooth lifting of the brake arm 4 is facilitated.

The length of the long side is a, the length of the short side is b, and the curvature radius of the transition arc is r, wherein r is not more than b, and b < r < a can also be set. When b < r < a, the curvature radius of the transition arc is large, and the cam 8 rotates smoothly from the lowest point to the highest point.

Further, the cam 8 may be provided as an eccentric cylinder, an eccentric elliptic cylinder, or the like.

When the electro-hydraulic pusher 6 and the cam 8 do not work, the brake arm 4 is only held by the vertical downward holding force of the holding device 5, and the brake arm 4 presses down and drives the brake shoes 21 of the two support arms 2 to be held with the brake wheel 3, so that the brake wheel 3 cannot rotate. At this time, the slider of the brake arm 4 is at the bottom of the slide groove of the jack 61.

When the electro-hydraulic pusher 6 works by electrifying, the ejector rod 61 of the electro-hydraulic pusher 6 extends upwards, and the ejector rod 61 drives the sliding block of the brake arm 4 to move upwards synchronously, so that upward thrust is provided for the brake arm 4, the brake arm 4 is lifted upwards, and the brake shoe 21 is driven to be separated from the brake wheel 3.

When the electro-hydraulic pusher 6 fails, the push rod 9 is utilized to control the cam 8 to rotate, the side face, which is used for being contacted with the brake arm 4, of the cam 8 is gradually changed into a long edge from a short edge, and because the cam 8 is abutted against the brake arm 4, the brake arm 4 is subjected to vertical upward thrust in the rotating process of the cam 8, the clasping force of the clasping device 5 is overcome, so that the two support arms 2 are driven to move upwards, the brake shoe 21 of the support arm 2 is separated from the brake wheel 3, and the brake wheel 3 can continue to rotate.

In the embodiment, after the electro-hydraulic pusher 6 fails, the brake wheel 3 and the brake shoe 21 can still be separated through the cam structure, so that major accidents that the swinging launder cannot swing and molten iron overflows are avoided, and smooth and safe discharge of the molten iron in an emergency state is guaranteed.

Preferably, in order to avoid the cam 8 interfering with the electro-hydraulic braking process of the brake arm 4, the brake arm 4 is provided with a pulley 10, the pulley 10 abutting the cam 8, thereby avoiding the cam 8 abutting directly against the bottom surface of the brake arm 4.

On the basis of the above embodiments, please refer to fig. 1 and fig. 2, the brake arm 4 is connected to the clasping device 5 through a first pin, and the pulley 10 is sleeved on the first pin. The pulley 10 is sleeved outside the first shaft pin, and the original connection of the brake arm 4 and the holding device 5 is utilized, so that the structure of the brake arm 4 is simplified.

The pulley 10 can be a common roller or can be configured as a cam, and it should be noted that, if the pulley 10 is configured as a cam, the shape of the pulley 10 and the shape of the cam 8 should be designed reasonably to complete the lifting of the brake arm 4.

The size and material of the pulley 10 should be determined according to the actual production requirements, and will not be described herein.

Preferably, the cam 8 is connected with the supporting seat 7 through a third pin shaft, and a connecting line of the third pin shaft and the first pin shaft is perpendicular to the base 1.

The cam 8 is arranged below the pulley 10, and if the cam 8 is directly connected to the base 1 through the supporting seat 7, the maintenance and installation space of the holding device 5 needs to be reserved, so that the pulley 10 is large in thickness and heavy in weight.

Preferably, the support base 7 is fixedly connected to the support arm 2 relatively close to the clasping means 5. The length of the supporting seat 7 is determined according to the connection point position of the supporting seat 7 and the supporting arm 2, the distance between the clasping device 5 and the supporting arm 2 and other factors in actual production.

On the basis of the above embodiment, the structure of the clasping device 5 is limited, the clasping device 5 comprises a shell 52 connected with the base 1, a screw rod 51, a nut 54 and a spring 53 are arranged in the shell 52, one end of the screw rod 51 is connected with the brake arm 4, and the other end of the screw rod 51 is in threaded connection with the nut 54; one end of the spring 53 abuts the top surface of the housing 52, and the other end of the spring 53 abuts the nut 54.

When the clasping device 5 operates, the spring 53 is in a compressed state so that the spring 53 exerts a downward pressure on the nut 54, and the elastic restoring force of the spring 53 on the nut 54 is the clasping force of the clasping device 5.

The kinds, sizes, materials and the like of the screw rod 51, the spring 53 and the nut 54 are determined according to the actual production requirements, and are not described in detail herein.

When the magnitude of the holding force needs to be adjusted, the screw rod 51 is rotated by a wrench to change the number of the threads of the screw rod 51 connected with the nut 54, and further, the height of the nut 54 in the shell 52 is changed, so that the compression length of the spring 53 is changed.

It should be noted that, the first pin, the second pin, and the third pin mentioned in this document are only used to distinguish the difference of the positions, and do not contain a limitation on the sequence.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The above is to the double dynamical brake that the utility model provides has introduced in detail. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. A double-power brake comprises a base (1), wherein the base (1) is provided with an electro-hydraulic pusher (6), a holding device (5) and two supporting arms (2) which are parallel to each other, a brake wheel (3) is arranged between the two supporting arms (2), one side of the supporting arm (2) close to the brake wheel (3) is provided with a brake shoe (21), the two supporting arms (2) are hinged with the brake arm (4), the clasping device (5) and the electro-hydraulic pusher (6) are both connected with the brake arm (4), it is characterized by also comprising a supporting seat (7) fixedly connected with the base (1), a cam (8) rotatably connected with the supporting seat (7) and a push rod (9) driving the cam (8) to rotate, a push rod (61) of the electro-hydraulic pusher (6) is provided with a sliding groove, and the brake arm (4) is provided with a sliding block in clamping fit with the sliding groove;

the cam (8) is abutted to the brake arm (4), when the lowest point of the cam (8) is in contact with the brake arm (4), the brake shoe (21) is clasped with the brake wheel (3), and when the highest point of the cam (8) is in contact with the brake arm (4), the brake shoe (21) is separated from the brake wheel (3).

2. The dual-power brake as claimed in claim 1, characterized in that the brake arm (4) is provided with a pulley (10), the pulley (10) abutting the cam (8).

3. The hybrid brake of claim 2, wherein the brake arm (4) is connected to the clasping device (5) by a first pin, and the pulley (10) is sleeved on the first pin.

4. The hybrid brake of claim 3, characterized in that the support (7) is fixedly connected to the support arm (2) relatively close to the clasping means (5).

5. The dual-power brake of claim 3, wherein the cam (8) is connected with the support base (7) through a third pin, and a connecting line of the third pin and the first pin is perpendicular to the base (1).

6. The dual-power brake as recited in any one of claims 1-5, characterized in that the clasping device (5) comprises a housing (52) connected with the base (1), a screw (51), a nut (54) and a spring (53) are arranged in the housing (52), one end of the screw (51) is connected with the brake arm (4), and the other end of the screw (51) is in threaded connection with the nut (54);

one end of the spring (53) abuts against the top surface of the housing (52), and the other end of the spring (53) abuts against the nut (54).

7. Double-power brake according to any one of claims 1-5, characterized in that the cam (8) comprises a long side, a short side perpendicular to the long side and a transition arc, which connects the long side and the short side.