CN213740706U

CN213740706U - Rubber wheel brake type band-type brake mechanism of nuclear power plant gate

Info

Publication number: CN213740706U
Application number: CN202021477594.2U
Authority: CN
Inventors: 刘省勇; 钦军伟; 张文利
Original assignee: China General Nuclear Power Corp; CGN Power Co Ltd; Daya Bay Nuclear Power Operations and Management Co Ltd; Lingdong Nuclear Power Co Ltd; Guangdong Nuclear Power Joint Venture Co Ltd; Lingao Nuclear Power Co Ltd
Current assignee: China General Nuclear Power Corp; CGN Power Co Ltd; Daya Bay Nuclear Power Operations and Management Co Ltd; Lingdong Nuclear Power Co Ltd; Guangdong Nuclear Power Joint Venture Co Ltd; Lingao Nuclear Power Co Ltd
Priority date: 2020-07-23
Filing date: 2020-07-23
Publication date: 2021-07-20
Anticipated expiration: 2030-07-23

Abstract

The utility model relates to the technical field of special tools for nuclear power plants, and provides a rubber wheel brake type band-type brake mechanism of a nuclear power plant gate, which comprises a rubber wheel, a bracket, a brake shoe, a stop block, a shaft lever and an elastic piece; the brake shoe surrounds at least part of the peripheral surface of the pulley, the brake shoe is provided with a first connecting end and a second connecting end, the first connecting end and the second connecting end are respectively positioned at two opposite sides of the pulley, and the first connecting end is connected with the support; the axostylus axostyle activity sets up on the support, and the one end and the second link of axostylus axostyle are connected, and the other end and the dog butt or the separation of axostylus axostyle, elastic component and axostylus axostyle butt provide the elasticity that promotes the axostylus axostyle and keep away from the leather pulley. After the door body of gate was opened, axostylus axostyle and dog separation, the elastic component kick-backs to promote the axostylus axostyle and move towards the direction of keeping away from the pulley, the pulley is kept away from to the second link that the brake lining was dragged to the axostylus axostyle, so that the middle part of brake lining is close to the pulley and with pulley frictional contact, the pulley is unrotatable.

Description

Rubber wheel brake type band-type brake mechanism of nuclear power plant gate

Technical Field

The utility model relates to a specialized tool technical field of nuclear power plant especially relates to a rubber tyer brake skin formula band-type brake mechanism of nuclear power plant's gate.

Background

The personnel gate of the nuclear power plant is electromechanical integrated equipment penetrating through the pressure-bearing boundary of the containment vessel, and the personnel gate and the small equipment mainly have the functions of allowing personnel and small equipment to pass through the containment vessel during operation or thermal shutdown of the reactor without damaging the sealing function of the containment vessel.

The contracting brake mechanism is an important mechanism of a personnel gate transmission system, and realizes the functions of opening and closing a sealing door and the like together with other mechanisms. However, the working principle of the traditional band-type brake mechanism is complex and poor in reliability.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a rubber-wheel brake type band-type brake mechanism of a nuclear power plant gate to solve the problems of the conventional technology.

A rubber wheel brake type band-type brake mechanism of a nuclear power plant gate comprises a rubber wheel, a bracket, a brake shoe, a stop block, a shaft lever and an elastic piece; the brake shoe surrounds at least part of the peripheral surface of the pulley, the brake shoe is provided with a first connecting end and a second connecting end, the first connecting end and the second connecting end are respectively positioned at two opposite sides of the pulley, and the first connecting end is connected with the bracket; the shaft lever is movably arranged on the bracket, one end of the shaft lever is connected with the second connecting end, the other end of the shaft lever is abutted to or separated from the stop block, and the elastic piece is abutted to the shaft lever and provides elastic force for pushing the shaft lever to be far away from the leather wheel.

Above-mentioned rubber-tyred band-type brake mechanism of nuclear power plant's gate, the pulley is installed on the output shaft of commutator, and the support mounting is on the door body of gate, and the dog is installed on the door frame of gate, and when the door body of gate was in the closed condition, the one end and the dog butt of brake shoe were kept away from to the axostylus axostyle, and the elastic component is in the elastic compression state, has the clearance between brake shoe and the pulley, and the pulley can rotate automatically to the output shaft of commutator is also rotatable. After the door body of gate was opened, axostylus axostyle and dog separation, the elastic component kick-backs to promote the axostylus axostyle and move towards the direction of keeping away from the pulley, the pulley is kept away from to the second link that the brake lining was dragged to the axostylus axostyle, so that the middle part of brake lining is close to the pulley and with pulley frictional contact, the pulley is unrotatable, thereby the output shaft of commutator is also unrotatable. The nuclear power plant gate band-type brake mechanism is simplified in structure, simple in working principle and high in reliability.

In one embodiment, the bracket comprises a bottom plate and a fixing block, the fixing block is mounted on the bottom plate and is arranged between the brake shoe and the stop block, the first connecting end is connected with the bottom plate, and the shaft rod is movably arranged through the fixing block.

In one embodiment, the device further comprises a supporting plate, the supporting plate is arranged on the shaft rod, the supporting plate is arranged between the fixed block and the stop block, the elastic element is arranged between the fixed block and the supporting plate, and two ends of the elastic element are respectively elastically abutted against the fixed block and the supporting plate.

In one embodiment, the elastic member is a coil spring, and the elastic member is sleeved on the shaft rod.

In one embodiment, the abutting plate is annular, and the abutting plate is sleeved on the shaft rod.

In one embodiment, the shaft rod is provided with a support column, and the support column is arranged between the support plate and the stop block.

In one embodiment, an end of the shaft rod away from the brake shoe is provided with an arc-shaped portion.

In one embodiment, the arcuate portion is hemispherical.

In one embodiment, the brake shoes are disposed half-way around the circumference of the pulley.

In one embodiment, the brake shoe is a belt having elasticity.

Drawings

Fig. 1 is a schematic structural view of a rubber-wheel brake band-type internal contracting brake mechanism of a power plant gate according to a first embodiment of the present invention, wherein a brake band is separated from a rubber wheel;

fig. 2 is another state diagram of the pulley type band-type brake mechanism of the power plant gate shown in fig. 1, wherein the brake shoe is tightly held with the pulley.

Fig. 3 is a schematic structural view of a pulley brake type band-type brake mechanism of a power plant gate according to a second embodiment of the present invention.

The meaning of the reference symbols in the drawings is:

the brake shoe comprises a leather wheel 10, a support 20, a bottom plate 21, a fixing block 22, a brake shoe 30, a stop block 40, an inclined surface 41, a shaft rod 50, an arc-shaped part 51, a support column 52, an elastic element 60 and a support plate 70.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1, a rubber band-type brake mechanism of a nuclear power plant gate according to an embodiment of the present invention is installed on a gate, and a commutator having an output shaft is installed on a door body of the gate.

The belt wheel brake type band-type brake mechanism of the nuclear power plant gate comprises a belt wheel 10, a bracket 20, a brake shoe 30, a stop block 40, a shaft lever 50 and an elastic piece 60; the pulley 10 is installed on the output shaft of the commutator, and the pulley 10 and the output shaft of the commutator are coaxially arranged. The bracket 20 is mounted on the door body of the gate. The brake shoe 30 is a belt having elasticity, and the brake shoe 30 surrounds at least a part of the outer circumferential surface of the pulley 10, specifically, the brake shoe 30 is disposed to surround the circumferential side of the pulley 10. The brake shoe 30 has a first connecting end 31 and a second connecting end 32, the first connecting end 31 being connected to the support 20. The stopper 40 is installed on the door frame of the lock gate. The shaft lever 50 is movably disposed on the bracket 20, one end of the shaft lever 50 is connected to the second connecting end 32, and the other end of the shaft lever 50 is abutted to or separated from the stopper 40. The resilient member 60 abuts the axle 50 and provides a spring force that urges the axle 50 away from the pulley 10.

Above-mentioned pulley 10 is installed on the output shaft of commutator, support 20 is installed on the door body of gate, dog 40 is installed on the door frame of gate, when the door body of gate is in the closed condition, as shown in fig. 1, the one end that brake lining 30 was kept away from to axostylus axostyle 50 corresponds the setting with dog 40, and the one end and the dog 40 butt that brake lining 30 was kept away from to axostylus axostyle 50, elastic component 70 is in the elastic compression state, have the clearance between brake lining 30 and the pulley 10, thereby pulley 10 can rotate automatically, the output shaft synchronous rotation along with the commutator of pulley 10 promptly. After the door body of the gate is opened, as shown in fig. 2, one end of the shaft lever 50, which is far away from the brake shoe 30, is separated from the stopper 40, the elastic member 70 rebounds and pushes the shaft lever 50 to move in a direction far away from the pulley 10, and the shaft lever 50 pulls the second connecting end 32 of the brake shoe 30 to be far away from the pulley 10, so that a part of the brake shoe 30 is close to the pulley 10 and is in frictional contact with the pulley 10, that is, the brake shoe 30 tightly holds the pulley 10, the pulley 10 cannot rotate, and thus the output shaft of the commutator cannot rotate.

When the gate body of the gate is raised, the gate body is opened, and when the gate body of the gate is lowered, the gate body is closed.

The commutator arranged on the gate body is a rectangular body. The number of output shafts is two, and two output shafts are located the opposite side of commutator respectively, and two output shafts coaxial setting. The pulley 10 is fixedly sleeved on one of the output shafts of the commutator. The commutator also has an input shaft which is in driving connection with the two output shafts so that when the input shaft is driven to rotate, the input shaft drives the output shafts to rotate. In the present embodiment, the input shaft is arranged perpendicular to the two output shafts, so that the input shaft commutates the output shafts by 90 ° via the commutators.

When the brake shoes 30 tightly hold the pulley 10, the pulley 10 is not rotatable, the output shaft is not rotatable, and the input shaft is not rotatable.

In this embodiment, the input shaft is used for connecting a jacking mechanism on the gate, one of the output shafts is used for connecting a locking mechanism at the lower end of the gate, the other output shaft is used for connecting a locking mechanism at the upper end of the gate, the power of the jacking mechanism is transmitted to the locking mechanism on the gate through the input shaft and the output shaft, and the door body of the gate and the door frame of the gate are locked or unlocked through the locking mechanism. It can be understood that when the brake shoe 30 is separated from the pulley 10, the pulley 10 can automatically rotate, the output shaft and the input shaft can both rotate, and at this time, both the jacking mechanism and the locking mechanism can operate normally. When the brake shoe 30 tightly holds the pulley 10, the pulley 10 is not rotatable, the output shaft and the input shaft are not rotatable, and at the moment, the jacking mechanism and the locking mechanism are both in a locking state.

Furthermore, a chain wheel is sleeved on the output shaft, the chain wheel and the output shaft are coaxially arranged and synchronously rotate along with the output shaft, and the chain wheel is in transmission connection with a locking mechanism on the gate door body through a toothed chain.

The support 20 includes bottom plate 21 and fixed block 22, the bottom plate 21 is installed on the door body of gate, the fixed block 22 is installed on the bottom plate 21, and the fixed block 22 is located between brake shoe 30 and the dog 40, the first link 31 and the bottom plate 21 of brake shoe 30 are connected, and the first link 31 of brake shoe 30 is located one side that the pulley 10 deviates from axostylus axostyle 50, the second link 32 of brake shoe 30 is located between pulley 10 and the fixed block 22, and the one end of axostylus axostyle 50 is fixed cup joints with the second link 32 of brake shoe 30, so that the second link 32 of brake shoe 30 can move along with axostylus axostyle 50. The shaft lever 50 is movably disposed through the fixing block 22, so that the shaft lever 50 can move linearly left and right relative to the fixing block 22.

The end of the shaft 50 away from the brake shoe 30 is provided with an arc-shaped portion 51 so that the shaft 50 can smoothly abut against the stopper 40. In the present embodiment, the arc portion 51 has a hemispherical shape.

The rubber wheel brake type band-type brake mechanism of the nuclear power plant gate further comprises a resisting plate 70, the resisting plate 70 is arranged on the shaft rod 50, the resisting plate 70 is arranged between the fixed block 22 and the stop block 40, the elastic element 60 is arranged between the fixed block 22 and the resisting plate 70, and two ends of the elastic element 60 are respectively elastically abutted against the fixed block 22 and the resisting plate 70.

Further, the elastic member 60 is a coil spring, and the elastic member 60 is sleeved on the shaft rod 50. The abutting plate 70 is annular, and the abutting plate 70 is fixedly sleeved on the shaft lever 50.

Referring to fig. 3, a pulley brake type band-type brake mechanism of a nuclear power plant gate according to a second embodiment of the present invention includes a pulley 10, a bracket 20, a brake shoe 30, a stopper 40, a shaft rod 50 and an elastic member 60, wherein the pulley 10 is mounted on an output shaft of a commutator, and the pulley 10 and the output shaft of the commutator are coaxially disposed. The bracket 20 is mounted on the door body of the gate. The brake shoes 30 are disposed around the circumferential side of the pulley 10. The brake shoe 30 has a first connecting end 31 and a second connecting end 32, the first connecting end 31 being connected to the support 20. The stopper 40 is installed on the door frame of the lock gate. The shaft lever 50 is movably disposed on the bracket 20, one end of the shaft lever 50 is connected to the second connecting end 32, and the other end of the shaft lever 50 is abutted to or separated from the stopper 40. The resilient member 60 abuts the axle 50 and provides a spring force that urges the axle 50 away from the pulley 10.

The structure of the pulley 10, the bracket 20, the brake shoe 30 and the elastic member 60 in this embodiment is the same as the structure of the pulley 10, the bracket 20, the brake shoe 30 and the elastic member 60 in the first embodiment, but the difference is that the shaft lever 50 is further provided with a prop 52, the prop 52 is disposed between the prop 70 and the stopper 40, and the prop 52 is used for limiting the prop 250 and preventing the prop 70 from moving away from the fixing block 22 under the action of the elastic member 26. It should be noted that, when the shaft 50 is provided with the abutting column 52, the abutting plate 70 is fixedly or movably sleeved on the shaft 50, and when the shaft 50 is not provided with the abutting column 52, the abutting plate 70 is fixedly sleeved on the shaft 50, that is, the abutting plate 70 cannot move relative to the shaft 50. The dog 40 is inclined plane 41 towards 50 a side of axostylus axostyle, and inclined plane 41 sets up along the vertical tilt up of the door frame of gate, because the door body of gate rises and shows to open the door body, and the door body of gate descends and shows to close the door body when descending to the setting of inclined plane 41 to when making the door body of gate descend and close, so that the axostylus axostyle 50 keeps away from the one end of brake lining 30 and changes easily with the dog 40 butt.

The utility model discloses a rubber tyer brake formula band-type brake mechanism of nuclear power plant gate, the leather tyer 10 is installed on the output shaft of commutator, support 20 is installed on the door body of gate, dog 40 is installed on the door frame of gate, when the door body of gate is in the closed condition, the one end and the dog 40 butt that the brake shoe 30 was kept away from to axostylus axostyle 50, elastic component 70 is in the elastic compression state, the clearance has between brake shoe 30 and the leather tyer 10, but the leather tyer 10 is automatic to rotate to the output shaft of commutator is also rotatable. After the door body of gate is opened, axostylus axostyle 50 and dog 40 separation, elastic component 70 kick-backs to promote axostylus axostyle 50 to move towards the direction of keeping away from the pulley 10, second link 32 that axostylus axostyle 50 pulled brake shoes 30 keeps away from pulley 10, so that the middle part of brake shoes 30 is close to pulley 10 and with pulley 10 frictional contact, pulley 10 can not rotate, thereby the output shaft of commutator is also not rotatable. The nuclear power plant gate band-type brake mechanism is simplified in structure, simple in working principle and high in reliability.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A belt pulley brake type band-type brake mechanism of a nuclear power plant gate is characterized by comprising a belt pulley, a bracket, a brake shoe, a stop block, a shaft lever and an elastic piece; the brake shoe surrounds at least part of the peripheral surface of the pulley, the brake shoe is provided with a first connecting end and a second connecting end, the first connecting end and the second connecting end are respectively positioned at two opposite sides of the pulley, and the first connecting end is connected with the bracket; the shaft lever is movably arranged on the bracket, one end of the shaft lever is connected with the second connecting end, the other end of the shaft lever is abutted to or separated from the stop block, and the elastic piece is abutted to the shaft lever and provides elastic force for pushing the shaft lever to be far away from the leather wheel.

2. The rubber-wheel brake type band-type brake mechanism of the nuclear power plant gate as claimed in claim 1, wherein the bracket comprises a bottom plate and a fixed block, the fixed block is mounted on the bottom plate and is arranged between the brake shoe and the stop block, the first connecting end is connected with the bottom plate, and the shaft rod is movably arranged to penetrate through the fixed block.

3. The rubber-pulley brake type band-type brake mechanism of the nuclear power plant gate of claim 2, further comprising a resisting plate, wherein the resisting plate is arranged on the shaft rod, the resisting plate is arranged between the fixed block and the stop block, the elastic member is arranged between the fixed block and the resisting plate, and two ends of the elastic member are respectively elastically abutted against the fixed block and the resisting plate.

4. The belt-type band-type brake mechanism of the nuclear power plant gate of claim 3, wherein the elastic member is a coil spring, and the elastic member is sleeved on the shaft rod.

5. The pulley brake type band-type brake mechanism of the nuclear power plant gate as claimed in claim 3, wherein the abutting plate is annular, and the abutting plate is sleeved on the shaft rod.

6. The rubber-pulley brake type band-type brake mechanism of the nuclear power plant gate as claimed in claim 5, wherein the shaft rod is provided with a support column, and the support column is arranged between the support plate and the stop block.

7. The pulley brake type band-type brake mechanism of the nuclear power plant gate as claimed in claim 1, wherein an end of the shaft lever away from the brake shoe is provided with an arc-shaped portion.

8. The pulley brake type band-type brake mechanism of a nuclear power plant gate of claim 7, wherein the arc-shaped portion is hemispherical.

9. The pulley brake mechanism of a nuclear power plant gate of claim 1, wherein the brake shoe is disposed half-way around a circumferential side of the pulley.

10. The pulley brake type band-type brake mechanism of the nuclear power plant gate as claimed in claim 1, wherein the brake shoe is a belt having elasticity.