Rotary band-type brake with balancing device

Abstract

The utility model discloses a rotary band-type brake with a balancing device, which relates to the technical field of equipment overhaul and maintenance and comprises a base, two brake shoes, a brake wheel and the balancing device, the base is provided with two supports fixedly connected to the base, and the two supports are arranged at intervals; the two brake shoes are detachably connected to the support, and the ends, away from the base, of the brake shoes are connected with a brake frame used for supporting an air cylinder. The brake wheels are arranged between the two brake shoes at intervals; the balancing device comprises a first supporting frame, a second supporting frame, a supporting plate and an adjusting piece, the second supporting frame is arranged on the air cylinder and connected to the supporting plate through the adjusting piece, and the supporting plate is connected to the support through the first supporting frame so that the adjusting piece can drive the air cylinder to be close to or away from the supporting plate. Upward pulling force can be provided for the air cylinder through the supporting plate and the adjusting piece, so that the phenomenon that the front end of the rotary brake falls is avoided, the safety operation guarantee of the electric shovel is improved, meanwhile, abrasion of parts is effectively reduced, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of equipment inspection and maintenance, in particular to a rotary brake with a balancing device. Background Art

[0002] Electric shovels are large-scale excavation equipment widely used in large and medium-sized open-pit mines in my country. Electric shovels usually use two slewing motors to provide power for the slewing mechanism. In order to ensure that the slewing mechanism can be in a safe and controlled state at any time, a slewing brake (slewing brake for short) is horizontally installed on the top of each slewing motor using a single-sided base support. The slewing brake is one of the important safety braking devices of the electric shovel.

[0003] During operation, the brake frame on the air cylinder side of the slewing brake is prone to falling due to its large gravity and lack of support points, causing the front end of the slewing brake to tilt downward, thereby causing the brake frames on the left and right sides to tilt as well. The brake shoes are always in a tilted state with the front lower and the back higher.

[0004] This phenomenon has the following disadvantages: First, the left and right brake shoes cannot keep level with the slewing brake wheel, and the eccentricity exceeds 15~20mm, which is much larger than the specified value of 1mm; second, the effective contact area between the left and right brake shoes and the slewing brake wheel is lower than 85% of the specified value, and the brake shoes and the brake wheel cannot be evenly separated when the brake is released, and the gap cannot be guaranteed to be within 1-3mm, and is often in a semi-contact state, which not only accelerates the wear of the brake shoes and the brake wheel, but also increases the load and energy loss of the slewing mechanism during the operation of the electric shovel, which not only increases the production cost, but also affects the slewing speed and operating efficiency of the electric shovel; finally, the slewing mechanism is prone to braking delay or failure, causing safety or equipment accidents. It can be seen that the above phenomenon has a long-term impact on the braking effect of the slewing mechanism of the electric shovel, which is not only not conducive to safe production, but also increases production costs.

[0005] Therefore, how to avoid and eliminate the design defects of the slewing brake and prevent the front end of the slewing brake from falling, thereby effectively reducing production costs while improving the safety of electric shovel operation, is a technical problem that technical personnel in this field currently need to solve. Utility Model Content

[0006] The utility model aims to provide a slewing brake with a balancing device, which can avoid and eliminate the design defects of the slewing brake and prevent the front end of the slewing brake from falling, thereby effectively reducing the production cost while improving the safety of electric shovel operation.

[0007] In order to achieve the above object, the utility model provides a rotary brake with a balancing device, comprising:

[0008] The base is provided with two brackets fixedly connected to the base, and the two brackets are arranged at intervals;

[0009] Two brake shoes are detachably connected to the brackets, and one end of the brake shoe facing away from the base is connected to a brake frame for supporting the air cylinder;

[0010] A brake wheel is arranged between two brake shoes at intervals;

[0011] The balancing device includes a first support frame, a second support frame, a support plate and an adjusting member. The second support frame is arranged on the air cylinder and connected to the support plate through the adjusting member. The support plate is connected to the bracket through the first support frame so that the adjusting member can drive the air cylinder to approach or move away from the support plate.

[0012] Preferably, the adjusting member is a telescopic cylinder, two ends of the adjusting member are respectively connected to the support plate and the second support frame, and the adjusting member is connected to a power source to control the adjusting member to extend or shorten along its own axis.

[0013] Preferably, a detector is provided on the bracket, which can detect the relative position of the brake shoe and the brake wheel, and when the displacement of the brake shoe relative to the brake wheel reaches a first preset value, the detector sends a signal.

[0014] Preferably, the power source is provided with a signal processing module and a control module. The signal processing module can receive the signal sent by the detector and transmit it to the control module, so that the control module drives the adjusting member to extend or shorten.

[0015] Preferably, the first support frame includes a first bending portion and a second bending portion that are perpendicular to each other, the first bending portion is vertically connected to the support, the second bending portion is connected to an end of the first bending portion that is away from the support, and the second bending portion is provided with a through hole, a connecting member is passed through the through hole to connect the second bending portion and the support plate, and the second bending portion is attached to the bottom of the support plate to support the support plate.

[0016] Preferably, the connecting member is a bolt, and the first bent portion is welded to the bracket.

[0017] Preferably, the second support frame includes two parallel and spaced vertical plates, both of which are fixedly connected to the circumferential wall of the air cylinder, and the ends of the two vertical plates facing away from the circumferential wall are connected by a horizontal plate, and the horizontal plate is connected to one end of the adjusting member.

[0018] Preferably, a through circular hole is provided in the middle of the support plate, and the circular hole is colinear with the axis of the gate wheel.

[0019] Preferably, the first bending portion and the second bending portion are an integral structure.

[0020] Preferably, the first support frame, the second support frame and the support plate are made of stainless steel.

[0021] Compared with the above-mentioned background technology, the utility model provides a rotary brake with a balancing device, including a base, two brake shoes, a gate wheel and a balancing device. The base is provided with two brackets fixedly connected to the base, and the two brackets are arranged at intervals; the two brake shoes are respectively detachably connected to the brackets, and the ends of the brake shoes facing away from the base are connected to a gate frame for supporting the air cylinder; the gate wheel is arranged at intervals between the two brake shoes; the balancing device includes a first support frame, a second support frame, a support plate and an adjusting member, the second support frame is arranged on the air cylinder and connected to the support plate through the adjusting member, and the support plate is connected to the bracket through the first support frame, so that the adjusting member can drive the air cylinder to approach or move away from the support plate.

[0022] Specifically, the support plate is connected to the bracket through the first support frame, and the support plate is connected to the second support frame arranged on the air cylinder through the adjusting member. The support plate and the adjusting member can provide an upward pulling force to the air cylinder to prevent the front end of the slewing brake from falling. At the same time, the positions of the gate frame, brake shoe and gate wheel can be relatively fixed, thereby improving the safe operation of the electric shovel while effectively reducing the wear of components such as the gate wheel, brake shoe and gate frame, thereby reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0024] Figure 1 A schematic diagram of the structure of a rotary brake with a balancing device provided in an embodiment of the utility model;

[0025] Figure 2 This is a schematic structural diagram of a balancing device provided in an embodiment of the utility model.

[0026] in:

[0027] 100-base, 110-bracket;

[0028] 200-brake shoe, 210-brake frame;

[0029] 300-air cylinder;

[0030] 400-brake wheel;

[0031] 510 - first support frame, 520 - support plate, 521 - round hole, 530 - adjustment member, 540 - power source;

[0032] 600-Detector. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0035] In the description of the present invention, it should be understood that the terms "top", "bottom" and "middle" etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the positions or elements referred to must have specific orientations, be constructed and operated in specific orientations, and therefore should not be understood as limitations of the present invention.

[0036] The utility model aims to provide a slewing brake with a balancing device, which can avoid and eliminate the design defects of the slewing brake and prevent the front end of the slewing brake from falling, thereby effectively reducing the production cost while improving the safety of electric shovel operation.

[0037] See also Figure 1 and Figure 2 To achieve the above-mentioned purpose, the utility model provides a rotary brake with a balancing device, including a base 100, two brake shoes 200, a brake wheel 400 and a balancing device.

[0038] The base 100 is provided with two brackets 110 fixedly connected to the base 100 , and the two brackets 110 are arranged at an interval.

[0039] The two brake shoes 200 are detachably connected to the bracket 110 , and one end of the brake shoe 200 away from the base 100 is connected to a brake frame 210 for supporting the air cylinder 300 .

[0040] It should be noted that the two brackets 110 are horizontally arranged at the same height and are both perpendicular to the base 100. The bracket 110 is provided with a bottom plate for fitting and mounting with the base 100. The bracket 110 and the bottom plate are detachably connected by bolts and nuts. The brake shoe 200 is connected to the bracket 110 by bolts and nuts to improve the installation and disassembly efficiency of the bracket 110 and the brake shoe 200.

[0041] The brake wheel 400 is disposed between the two brake shoes 200 .

[0042] The balancing device includes a first support frame 510, a second support frame, a support plate 520 and an adjusting member 530. The second support frame is arranged on the air cylinder 300 and is connected to the support plate 520 through the adjusting member 530. The support plate 520 is connected to the bracket 110 through the first support frame 510 so that the adjusting member 530 can drive the air cylinder 300 to move closer to or away from the support plate 520.

[0043] Among them, the first support frame 510 is used to support and fix the support plate 520, and the second support frame is arranged on the air cylinder 300, so that the adjustment member 530 connects the second support frame and the support plate 520, and then the air cylinder 300 is connected to the support plate 520. By controlling the distance between the support plate 520 and the second support frame by the adjustment member 530, the height of the air cylinder 300 can be adjusted to overcome the falling phenomenon under the action of gravity.

[0044] Specifically, the support plate 520 is connected to the bracket 110 through the first support frame 510, and the support plate 520 is connected to the second support frame arranged on the air cylinder 300 through the adjusting member 530. The support plate 520 and the adjusting member 530 can provide an upward pulling force to the air cylinder 300 to prevent the front end of the slewing brake from falling. At the same time, the positions of the brake frame 210, the brake shoe 200, and the brake wheel 400 can be relatively fixed, thereby improving the safety of the electric shovel operation while effectively reducing the wear of components such as the brake wheel 400, the brake shoe 200, and the brake frame 210, thereby reducing production costs.

[0045] Preferably, the adjusting member 530 is specifically a telescopic cylinder, and the two ends of the adjusting member 530 are respectively connected to the support plate 520 and the second support frame. The adjusting member 530 is connected to a power source 540 to control the extension or shortening of the adjusting member 530 along its own axis. A detector 600 is provided on the bracket 110. The detector 600 can detect the relative position of the brake shoe 200 and the brake wheel 400, and when the displacement of the brake shoe 200 relative to the brake wheel 400 reaches a first preset value, the detector 600 sends a signal. The power source 540 is provided with a signal processing module and a control module. The signal processing module can receive the signal sent by the detector 600 and transmit it to the control module, so that the control module drives the adjusting member 530 to extend or shorten.

[0046] In this embodiment, the adjusting member 530 is preferably a telescopic cylinder, and the fixed end of the telescopic cylinder is fixedly connected to the support plate 520, and the movable end of the telescopic cylinder is connected to the second support frame. Through the control of the power source 540, the adjusting member 530 can be extended and retracted to change the distance between the second support frame and the support plate 520. The bracket 110 is provided with a detector 600 capable of detecting the relative position of the brake shoe 200 and the brake wheel 400, and the power source 540 is provided with a signal processing module and a control module.

[0047] When the detector 600 detects that the relative position of the brake shoe 200 and the brake wheel 400 reaches a first preset value, a signal is sent to the signal processing module of the power source 540. The signal processing module controls the control module according to the signal to drive the adjusting member 530 to extend or shorten. Specifically, if the brake shoe 200 is relatively low relative to the brake wheel 400, the detector 600 sends a first signal, the signal processing module receives and identifies the first signal, and the control module drives the adjusting member 530 to shorten. If the brake shoe 200 is relatively high relative to the brake wheel 400, the detector 600 sends a second signal, the signal processing module receives and identifies the second signal, and the control module drives the adjusting member 530 to extend.

[0048] In addition, the specific length of the extension or shortening of the single adjusting member 530 can be set according to actual needs. After the single autonomous adjustment is completed, the detector 600 can continue to detect in real time. If it still exceeds the first preset value, it will continue to feedback to the power source 540 to enable the adjusting member 530 to extend or shorten a certain length again, until the relative position of the brake shoe 200 and the brake wheel 400 is less than the first preset value and the detector 600 sends no signal.

[0049] It should be noted that an alarm device may also be provided on the bracket 110. When the detector 600 continuously sends out the first signal and / or the second signal for a certain period of time, it indicates that the adjustment of the adjustment member 530 is still not in place. The alarm device may be used to remind the operator to pay attention to maintenance. Preferably, a through circular hole 521 is provided in the middle of the support plate 520, and the circular hole 521 is colinear with the axis of the gate wheel 400, so that the operator can observe the relative positions of the brake shoe 200 and the gate wheel 400.

[0050] Preferably, the first support frame 510 includes a first bent portion and a second bent portion which are perpendicular to each other, the first bent portion is vertically connected to the bracket 110, the second bent portion is connected to the end of the first bent portion which is away from the bracket 110, and the second bent portion is provided with a through hole, a connecting member is passed through the through hole to connect the second bent portion and the support plate 520, the second bent portion is attached to the bottom of the support plate 520 to support the support plate 520, the connecting member is specifically a bolt, and the first bent portion is welded to the bracket 110, the first bent portion and the second bent portion are an integrated structure.

[0051] In this embodiment, the first support frame 510 includes a first bent portion and a second bent portion that are perpendicular to each other. The first bent portion is vertically welded to the bracket 110, and the second bent portion is detachably connected to the support plate 520 by bolts. The connection between the bracket 110 and the support plate 520 is achieved through the first bent portion and the second bent portion of the integrated structure. The first support frame 510 can make the bracket 110 and the support plate 520 separated and parallel to each other.

[0052] In another embodiment, an extension portion may be added to the support plate 520, and the support plate 520 may be directly and detachably connected to the bracket 110 through the extension portion to complete the fixation of the support plate 520. The extension portion and the support plate 520 may be integrated to enhance the connection strength between the support plate 520 and the bracket 110.

[0053] Preferably, the second support frame includes two parallel and spaced-apart vertical plates, both of which are fixedly connected to the circumferential wall of the air cylinder 300 , and the ends of the two vertical plates facing away from the circumferential wall are connected by a horizontal plate, which is connected to one end of the adjusting member 530 .

[0054] It can be understood that the second support frame includes a horizontal plate and two vertical plates, and the horizontal plate is connected to two parallel and spaced vertical plates to achieve overall stability of the second support frame. The horizontal plate and the vertical plates can be preferably welded together, and the vertical plates are connected to the circumferential wall of the air cylinder 300 to achieve the adjustment member 530 to drive the second support frame and the air cylinder 300 to move closer to or away from the support plate 520.

[0055] In another embodiment, the adjusting member 530 in the above embodiment can be replaced by an elastic component, which includes a screw, a spring and a limit member, wherein the screw is welded to the middle part of the above-mentioned cross plate, and a second through hole is opened at a corresponding position of the support plate 520, so that the screw is passed through the second through hole and then sleeved by the limit member, and the limit member is located on the side of the support plate 520 away from the cross plate, and the spring is arranged between the support plate 520 and the limit member, and the elastic force of the spring makes the limit member move away from the support plate 520, thereby causing the limit member to drive the screw and the cross plate to move upward until the entire balancing assembly reaches a balanced state, and the spring has a certain deformation capacity, which can make the cross plate move within a certain height range, and when it is necessary to continue to lift the air cylinder 300 connected to the second support frame, it is only necessary to adjust the position of the limit member on the screw.

[0056] Preferably, the first support frame 510, the second support frame and the support plate 520 are made of stainless steel.

[0057] It is understandable that the first support frame 510, the second support frame and the support plate 520 are preferably made of stainless steel. The materials of the first support frame 510, the second support frame and the support plate 520 can also be adjusted according to actual conditions as long as the above purpose can be achieved.

[0058] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0059] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0060] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the utility model.

Claims

1. A swing brake with a balancing device, characterized in that: include: A base (100) is provided with two brackets (110) fixedly connected to the base (100), and the two brackets (110) are arranged at intervals; Two brake shoes (200) are respectively detachably connected to the bracket (110), and one end of the brake shoe (200) facing away from the base (100) is connected to a brake frame (210) for supporting the air cylinder (300); A brake wheel (400) is arranged between the two brake shoes (200); A balancing device comprises a first support frame (510), a second support frame, a support plate (520) and an adjusting member (530), wherein the second support frame is arranged on the air cylinder (300) and is connected to the support plate (520) via the adjusting member (530), and the support plate (520) is connected to the bracket (110) via the first support frame (510), so that the adjusting member (530) can drive the air cylinder (300) to move closer to or away from the support plate (520).

2. The swing brake with a balancing device according to claim 1, characterized in that: The adjusting member (530) is specifically a telescopic cylinder, and the two ends of the adjusting member (530) are respectively connected to the support plate (520) and the second support frame. The adjusting member (530) is connected to a power source (540) to control the adjusting member (530) to extend or shorten along its own axis.

3. The swing brake with a balancing device according to claim 2, characterized in that: The bracket (110) is provided with a detector (600), and the detector (600) is capable of detecting the relative position of the brake shoe (200) and the brake wheel (400), and when the displacement of the brake shoe (200) relative to the brake wheel (400) reaches a first preset value, the detector (600) sends a signal.

4. The swing brake with a balancing device according to claim 3, characterized in that: The power source (540) is provided with a signal processing module and a control module. The signal processing module is capable of receiving a signal sent by the detector (600) and transmitting the signal to the control module, so that the control module drives the adjusting member (530) to extend or shorten.

5. The swing brake with a balancing device according to claim 1, characterized in that: The first support frame (510) includes a first bending portion and a second bending portion which are perpendicular to each other, the first bending portion is vertically connected to the support (110), the second bending portion is connected to an end of the first bending portion which is away from the support (110), and the second bending portion is provided with a through hole, a connecting member is passed through the through hole to connect the second bending portion and the support plate (520), and the second bending portion is attached to the bottom of the support plate (520) to support the support plate (520).

6. The swing brake with a balancing device according to claim 5, characterized in that: The connecting member is specifically a bolt, and the first bent portion is welded to the bracket (110).

7. The swing brake with a balancing device according to claim 1, characterized in that: The second support frame comprises two parallel and spaced-apart vertical plates, the two vertical plates are fixedly connected to the circumferential wall of the air cylinder (300), and the ends of the two vertical plates facing away from the circumferential wall are connected by a horizontal plate, and the horizontal plate is connected to one end of the adjusting member (530).

8. The swing brake with a balancing device according to claim 1, characterized in that: A through circular hole (521) is provided in the middle of the support plate (520), and the circular hole (521) is colinear with the axis of the gate wheel (400).

9. The swing brake with a balancing device according to claim 5, characterized in that: The first bending portion and the second bending portion are an integrated structure.

10. The swing brake with a balancing device according to any one of claims 1 to 9, characterized in that: The first support frame (510), the second support frame and the support plate (520) are specifically made of stainless steel.

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