CN214534172U - Variable braking force device of high-sensitivity brake - Google Patents
Variable braking force device of high-sensitivity brake Download PDFInfo
- Publication number
- CN214534172U CN214534172U CN202120325216.0U CN202120325216U CN214534172U CN 214534172 U CN214534172 U CN 214534172U CN 202120325216 U CN202120325216 U CN 202120325216U CN 214534172 U CN214534172 U CN 214534172U
- Authority
- CN
- China
- Prior art keywords
- brake
- cavity
- piston
- fixedly arranged
- cylinder body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Cage And Drive Apparatuses For Elevators (AREA)
- Braking Arrangements (AREA)
Abstract
The utility model belongs to the technical field of the driving and braking of a high-sensitivity brake, and discloses a variable braking force device of the high-sensitivity brake, wherein a brake cylinder body is a hollow cylinder type with two closed ends, a first piston is fixedly arranged in a brake release cavity of the brake cylinder body, and a second piston is fixedly arranged at a position where a brake bar is close to the right side; the left end of the brake rod is fixedly connected with the middle position of the right side of the first piston, and the right end of the brake rod penetrates through the brake cavity and extends to the outside of the right side of the brake cylinder body; the brake shoe is fixedly arranged at the right end of the brake rod; the brake releasing cavity is fixedly arranged at the left position of the brake cylinder body, and the brake cavity is fixedly arranged at the right position of the brake releasing cavity. The utility model discloses a under the operating mode that does not change the stopper volume, can realize the improvement of braking force, reduce the machining precision of stopper, reduce the manufacturing cost of stopper.
Description
Technical Field
The utility model belongs to the technical field of the drive braking of stopper, concretely relates to variable brake force device of high sensitive stopper.
Background
A brake is a machine component having a function of decelerating, stopping, or holding a moving member (or a moving machine) in a stopped state, and stops or decelerates the moving member in the machine. The main functions of the brake of the hoisting machine are as follows: when the hoist does not work, the brake is used for braking the winding drum, and when the hoist has an emergency, the safety brake is carried out.
When the elevator is started, the hydraulic station outputs pressure oil to open the brake, the elevator starts to work, after hydraulic oil is injected into the oil cylinder, the plurality of disc springs are in a compressed state under the pushing of the piston, when the elevator works and brakes, the hydraulic oil in the oil cylinder is unloaded, and at the moment, under the elastic force of the plurality of disc springs, the brake rod and the brake shoe are instantly pushed to hold the brake disc of the elevator tightly for braking. The disc type brake of the hoister in the prior art mainly has the technical problems that: with the increase of the types of the hoisting machines, for a disc type brake of the hoisting machine, the corresponding braking force needs to be improved to ensure the braking effectiveness of the disc type brake. At present, to improve the braking force of a disc brake, the size of a disc spring and the thickness of the disc spring need to be increased to improve the braking force of the disc brake, so that the weight and the arrangement space of the disc brake need to be increased, and the manufacturing cost and the arrangement space of the disc brake are inevitably improved. The inventor has developed a variable braking force apparatus of a highly sensitive brake based on the above-mentioned drawbacks of the prior art, which can solve the above-mentioned problems of the prior art.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model provides a variable braking force device of a high-sensitivity brake, which has simple design structure, is scientific and reasonable and improves the braking force of a brake of a hoisting machine; the utility model discloses can solve along with the increase of lifting machine model, for the braking force that improves dish type stopper, need increase the size of dish spring and the thickness of dish spring, the size of unlimited increase dish type stopper with arrange the space, improve the problem of dish type automatics manufacturing cost.
The utility model adopts the technical proposal that: a variable braking force device of a high-sensitivity brake comprises a brake cylinder body, a first piston, a second piston, a brake rod and a brake shoe; the brake cylinder body is a hollow cylinder with two closed ends, the first piston is fixedly arranged in a brake release cavity of the brake cylinder body, and the second piston is fixedly arranged at a position, close to the right side, of the brake rod; the left end of the brake rod is fixedly connected with the middle position of the right side of the first piston, and the right end of the brake rod penetrates through the brake cavity and extends to the outside of the right side of the brake cylinder body; the brake shoe is fixedly arranged at the right end of the brake rod; the brake release cavity is fixedly arranged at the left side position of the brake cylinder body, and the brake cavity is fixedly arranged at the right side position of the brake release cavity; the hydraulic oil injection port is fixedly arranged in the middle of the upper part of the brake release cavity and is communicated with the brake release cavity; the nitrogen injection port is fixedly arranged in the middle of the upper part of the brake cavity and communicated with the brake cavity.
The second piston is correspondingly arranged in the brake cavity and can move left and right in the brake cavity along with the left and right movement of the brake rod.
And a sealing ring is arranged at the contact position of the brake rod and the brake contact cavity as well as the brake cavity.
And a sealing ring is arranged at the joint of the brake rod and the second piston.
And a sealing ring is arranged at the contact position of the brake rod and the right end of the brake cylinder body.
And the hydraulic oil injection port is fixedly connected with a hydraulic oil pump of the hydraulic station and is used for injecting hydraulic oil into the brake release cavity or unloading the brake release cavity.
The nitrogen injection port is normally closed, and when the pressure of nitrogen in the brake cavity is reduced, high-pressure nitrogen is injected into the brake cavity through the nitrogen injection port.
The variable braking force device of the high-sensitivity brake has the following use processes: when the variable braking force device of the high-sensitivity brake is required to realize braking and holding of a brake disc of a hoister, firstly, the pressure required by the brake disc is calculated according to the size of the hoister, and corresponding nitrogen pressure capable of meeting the braking force requirement is injected into a brake cavity through a nitrogen injection port by a nitrogen pressurizing pump, so that the nitrogen injection port is in a closed state; then hydraulic oil is injected into the brake releasing cavity through a hydraulic oil injection opening by a hydraulic pump of the hydraulic station, when the oil pressure in the brake releasing cavity is greater than the nitrogen pressure in the brake cavity, the hydraulic oil in the brake releasing cavity pushes the first piston to move to the left side of the brake releasing cavity, meanwhile, the brake rod drives the second piston and the brake shoe to move to the left side, when the second piston moves to the left side of the brake cavity, the nitrogen is in a compression state, when the brake is needed, the hydraulic oil in the brake releasing cavity is unloaded, the nitrogen pressure in the brake cavity is greater than the oil pressure in the brake releasing cavity, the compressed nitrogen in the brake cavity recovers the original volume, the second piston is pushed out to the right side instantly and rapidly, the first piston and the brake shoe are driven to move to the right side, when the brake shoe is in contact with a brake disc of a lifter, under the cooperation of the structure of the utility model with the same other side, and the brake shoe is used for tightly holding and braking a brake disc of the hoister. When the brake needs to be released, hydraulic oil is injected into the brake releasing cavity through the hydraulic oil injection port by using a hydraulic pump of the hydraulic station, when the oil pressure in the brake releasing cavity is greater than the nitrogen pressure in the brake cavity, the hydraulic oil in the brake releasing cavity pushes the first piston to move to the left side of the brake releasing cavity, and meanwhile, the brake rod drives the second piston and the brake shoe to move to the left side, so that the brake releasing of the hoister is realized.
The brake cylinder body is a hollow cylinder with two closed ends, the first piston is fixedly arranged in a brake release cavity of the brake cylinder body, and the second piston is fixedly arranged at a position, close to the right side, of the brake rod; the main purposes of this arrangement are: by means of the arrangement of the first piston, on one hand, the oil pressure in the brake release cavity is changed, and the first piston is matched with the brake cylinder body, so that the brake rod drives the second piston and the brake shoe to move to the left side, and the brake release effect is achieved; on the other hand, the first piston plays a limiting role when the brake lever and the brake shoe move to the right side to generate braking force by utilizing the separation effect between the brake release cavity and the brake cavity. By means of the arrangement of the second piston, on one hand, when the first piston drives the brake rod and the brake shoe to move towards the left side, the first piston plays a limiting role; on the other hand, when the first piston drives the brake rod and the brake shoe to move towards the left side, the nitrogen is compressed to generate a compression force in the matching direction of the second piston and the brake cylinder body, and a power source is provided for generating braking force.
The left end of the brake rod is fixedly connected with the middle position of the right side of the first piston, and the right end of the brake rod penetrates through the brake cavity and extends to the outside of the right side of the brake cylinder body; the brake shoe is fixedly arranged at the right end of the brake rod; the main purposes of this arrangement are: due to the arrangement of the brake rod, the brake shoe can be driven by the first piston or the second piston to move, and the brake shoe can generate braking force or braking releasing force.
The brake release cavity is fixedly arranged at the left side position of the brake cylinder body, and the brake cavity is fixedly arranged at the right side position of the brake release cavity; the main purposes of this arrangement are: the brake release cavity and the brake cavity are arranged, on one hand, the first piston, the second piston, the brake rod and the brake shoe can move under the action of mutual change of oil pressure of the brake release cavity and nitrogen pressure in the brake cavity, and the generation of braking force and the action of braking force release are realized; on the other hand, the matching of the brake cavity and the second piston cylinder brake cylinder body is utilized, and the second piston is utilized to compress nitrogen under the condition that the oil pressure of the brake release cavity is greater than the pressure of the nitrogen in the brake cavity, so that a brake power source is generated; on the other hand, the nitrogen in the brake cavity replaces a plurality of disc springs in the prior art, so that the elastic loss generated by compression of the disc springs is reduced, and under the condition that the volume of the disc springs and the volume of a brake cylinder body are not changed, the brake force generated by the brake can be changed by increasing the pressure of the nitrogen in the brake cavity, so that the brake force of the brake is improved, the processing precision of the brake is reduced, and the manufacturing cost of the brake is reduced.
The utility model has the advantages that: the utility model provides a variable braking force device of a high-sensitivity brake, which has simple design structure, is scientific and reasonable and improves the braking force of a brake of a hoisting machine; under the condition of not changing the size and the arrangement space of the brake, the brake force can be improved, the processing precision of the brake is reduced, and the manufacturing cost and the arrangement space of the brake are reduced.
Drawings
Fig. 1 is a front view of the present invention;
the labels in the figure are: 1. the brake device comprises a brake cylinder body, 2, a first piston, 3, a second piston, 4, a brake rod, 5, a brake shoe, 6, a brake release cavity, 7, a brake cavity, 8, a hydraulic oil injection port, 9 and a nitrogen injection port.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.
As shown in the figure, the variable braking force device of the high-sensitivity brake comprises a brake cylinder body 1, a first piston 2, a second piston 3, a brake rod 4 and a brake shoe 5; the brake cylinder body 1 is a hollow cylinder with two closed ends, the first piston 2 is fixedly arranged in a brake release cavity 5 of the brake cylinder body 1, and the second piston 3 is fixedly arranged at a position, close to the right, of the brake rod 4; the left end of the brake rod 4 is fixedly connected with the right middle position of the first piston 2, and the right end of the brake rod 4 penetrates through the brake cavity 7 and extends to the outside of the right side of the brake cylinder body 1; the brake shoe 5 is fixedly arranged at the right end of the brake rod 4; the brake release cavity 6 is fixedly arranged at the left position of the brake cylinder body 1, and the brake cavity 7 is fixedly arranged at the right position of the brake release cavity 6; the hydraulic oil injection port 8 is fixedly arranged in the middle of the upper part of the brake release cavity 6, and the hydraulic oil injection port 8 is communicated with the brake release cavity 6; the nitrogen injection port 9 is fixedly arranged at the middle position of the upper part of the brake cavity 7, and the nitrogen injection port 9 is communicated with the brake cavity 7.
The second piston 3 is correspondingly arranged in the brake cavity 7, and can move left and right in the brake cavity 7 along with the left and right movement of the brake lever 4.
And a sealing ring is arranged at the contact part of the brake lever 4 and the brake contact cavity 6 and the brake cavity 7.
And a sealing ring is arranged at the joint of the brake rod 4 and the second piston 3.
And a sealing ring is arranged at the contact position of the brake rod 4 and the right end of the brake cylinder body 1.
The hydraulic oil injection port 8 is fixedly connected with a hydraulic oil pump of the hydraulic station, and the hydraulic oil injection port 8 is used for injecting hydraulic oil into the brake release cavity 6 or unloading the hydraulic oil.
The nitrogen injection port 9 is normally closed, and when the pressure of nitrogen in the brake chamber 7 is reduced, high-pressure nitrogen is injected into the brake chamber 7 through the nitrogen injection port 9.
The variable braking force device of the high-sensitivity brake has the following use processes: when the variable braking force device of the high-sensitivity brake is required to realize braking and holding of the brake disc of the elevator, firstly, the pressure required by the brake disc is calculated according to the size of the elevator, and corresponding nitrogen pressure capable of meeting the braking force requirement is injected into the brake cavity 7 through the nitrogen injection port 9 by the nitrogen pressurization pump, so that the nitrogen injection port 9 is in a closed state; then hydraulic oil is injected into a brake release cavity 6 through a hydraulic oil injection port 8 by a hydraulic pump of a hydraulic station, when the oil pressure in the brake release cavity 6 is greater than the nitrogen pressure in a brake cavity 7, the hydraulic oil in the brake release cavity 6 pushes a first piston 2 to move to the left side of the brake release cavity 6, meanwhile, a brake rod 4 drives a second piston 3 and a brake shoe 5 to move to the left side, when the second piston 3 moves to the left side of the brake cavity 7 leftwards, the nitrogen is in a compressed state, when braking is needed, the hydraulic oil in the brake release cavity 6 is unloaded, the nitrogen pressure in the brake cavity 7 is greater than the oil pressure in the brake release cavity 6, the compressed nitrogen in the brake cavity 7 recovers the original volume, the second piston 3 is instantly and quickly pushed out to the right side, the first piston 2 and the brake shoe 5 are simultaneously driven to move to the right side, when the brake shoe 5 is in contact with a brake disc of a lifter, the opposite side is the same the utility model discloses under the cooperation of structure, utilize brake shoe 5 to hold the brake disc of lifting machine braking tightly. When the brake needs to be released, hydraulic oil is injected into the brake release cavity 6 through the hydraulic oil injection port 8 by using a hydraulic pump of the hydraulic station, when the oil pressure in the brake release cavity 6 is greater than the nitrogen pressure in the brake cavity 7, the hydraulic oil in the brake release cavity 6 pushes the first piston 2 to move to the left side of the brake release cavity 6, and meanwhile, the brake rod 4 drives the second piston 3 and the brake shoe 5 to move to the left side, so that the brake release of the elevator is realized.
Various modifications to the above-described embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (4)
1. A variable braking force device of a high-sensitivity brake comprises a brake cylinder body, a first piston, a second piston, a brake rod and a brake shoe; the method is characterized in that: the brake cylinder body is a hollow cylinder with two closed ends, the first piston is fixedly arranged in a brake release cavity of the brake cylinder body, the second piston is fixedly arranged at a position, close to the right side, of the brake rod, the second piston is correspondingly arranged in the brake cavity, and the second piston can move left and right in the brake cavity along with the left and right movement of the brake rod; the left end of the brake rod is fixedly connected with the middle position of the right side of the first piston, and the right end of the brake rod penetrates through the brake cavity and extends to the outside of the right side of the brake cylinder body; the brake shoe is fixedly arranged at the right end of the brake rod; the brake release cavity is fixedly arranged at the left side position of the brake cylinder body, and the brake cavity is fixedly arranged at the right side position of the brake release cavity; the hydraulic oil injection port is fixedly arranged in the middle of the upper part of the brake release cavity and is communicated with the brake release cavity; the nitrogen injection port is fixedly arranged in the middle of the upper part of the brake cavity and communicated with the brake cavity.
2. The variable braking force apparatus of a high-sensitivity brake as claimed in claim 1, wherein: and a sealing ring is arranged at the contact position of the brake rod and the brake contact cavity as well as the brake cavity.
3. The variable braking force apparatus of a high-sensitivity brake as claimed in claim 2, wherein: and a sealing ring is arranged at the joint of the brake rod and the second piston.
4. The variable braking force apparatus of a high-sensitivity brake as claimed in claim 3, wherein: and a sealing ring is arranged at the contact position of the brake rod and the right end of the brake cylinder body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120325216.0U CN214534172U (en) | 2021-02-05 | 2021-02-05 | Variable braking force device of high-sensitivity brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120325216.0U CN214534172U (en) | 2021-02-05 | 2021-02-05 | Variable braking force device of high-sensitivity brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214534172U true CN214534172U (en) | 2021-10-29 |
Family
ID=78233873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120325216.0U Active CN214534172U (en) | 2021-02-05 | 2021-02-05 | Variable braking force device of high-sensitivity brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214534172U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113483041A (en) * | 2021-02-05 | 2021-10-08 | 中实洛阳重型机械有限公司 | Variable braking force device of high-sensitivity brake |
-
2021
- 2021-02-05 CN CN202120325216.0U patent/CN214534172U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113483041A (en) * | 2021-02-05 | 2021-10-08 | 中实洛阳重型机械有限公司 | Variable braking force device of high-sensitivity brake |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN214534172U (en) | Variable braking force device of high-sensitivity brake | |
| ITBO20080651A1 (en) | BRAKING SYSTEM OF A VEHICLE ACTING TO COMMAND A REGENERATIVE BRAKING | |
| CN110789063B (en) | Mold replacing device | |
| JP3437758B2 (en) | Crank press | |
| US11618647B2 (en) | Elevator car parking brake | |
| JPH0570722B2 (en) | ||
| CN101306788A (en) | Inclined plane disc type brake for winches | |
| WO2014054503A1 (en) | Cylinder device with force multiplication mechanism | |
| CN113483041A (en) | Variable braking force device of high-sensitivity brake | |
| EP2295825A2 (en) | Combined brake and clutch device for presses | |
| CN201385659Y (en) | Automobile braking hydraulic booster | |
| CN214248092U (en) | Pneumatic brake | |
| CN102582759A (en) | Linkage brake valve and motorcycle provided with the same | |
| CN210769922U (en) | Driving and parking braking integral type hydraulic pressure tong disc brake | |
| JP2852953B2 (en) | Fluid pressure piston mover | |
| CN102745293A (en) | Split piston type linkage brake valve and motorcycle | |
| CN110775854B (en) | Winch foot-operated braking system and dynamic compactor | |
| CN113757275B (en) | Brake wedge piston, method for designing same, brake cylinder and clamping unit | |
| CN211283553U (en) | Foot-operated braking system of winch and dynamic compactor | |
| CN2918357Y (en) | Braking apparatus of bridge and trestle crane running gear | |
| CN110439875B (en) | Hydraulic oil cylinder for controlling load | |
| CN210629263U (en) | Double-freedom-degree linear module actuating mechanism with brake | |
| CN110259853A (en) | It is a kind of to drive a vehicle and parking braking Integral hydraulic clipper disk brake | |
| KR20150011333A (en) | Combined coupling and brake device | |
| CN213839347U (en) | Reset stop brake for top drive of petroleum drilling machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |