CN213419722U - Ratchet pawl type band-type brake mechanism of nuclear power plant gate - Google Patents
Ratchet pawl type band-type brake mechanism of nuclear power plant gate Download PDFInfo
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- CN213419722U CN213419722U CN202021478873.0U CN202021478873U CN213419722U CN 213419722 U CN213419722 U CN 213419722U CN 202021478873 U CN202021478873 U CN 202021478873U CN 213419722 U CN213419722 U CN 213419722U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The utility model relates to a specialized tool technical field of nuclear power plant provides a ratchet pawl formula band-type brake mechanism of nuclear power plant's gate, include: the commutator is arranged on the gate body of the gate; the commutator has a first output shaft; the brake component comprises a ratchet wheel, a bracket, a pawl, a stop block, a shaft lever and an elastic piece; the ratchet is installed on first output shaft, and the pawl is including consecutive first connecting portion, second connecting portion and pointed end, second connecting portion and support pin joint, and most advanced and ratchet are detained or are separated tightly, and the dog is installed on the door frame of gate, and the axostylus axostyle activity sets up on the support, the one end and the first connecting portion pin joint of axostylus axostyle, 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. After the door body is opened, one end, far away from the pawl, of the shaft rod is separated from the stop block, the elastic piece pushes the shaft rod to move towards the direction far away from the ratchet wheel, the tip end of the pawl is tightly buckled with the ratchet wheel, and the ratchet wheel is in a locking state.
Description
Technical Field
The utility model relates to a specialized tool technical field of nuclear power plant especially relates to a ratchet pawl 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
In view of the above, it is necessary to provide a ratchet pawl type internal contracting brake mechanism of a nuclear power plant gate in order to solve the problems of the conventional technology.
A ratchet pawl formula band-type brake mechanism of nuclear power plant gate includes:
the commutator is arranged on the gate body of the gate; the commutator has a first output shaft;
the brake component comprises a ratchet wheel, a bracket, a pawl, a stop block, a shaft lever and an elastic piece; the ratchet wheel is installed on the first output shaft, the support is installed on a door body of the gate, the pawl comprises a first connecting portion, a second connecting portion and a tip end which are sequentially connected, the second connecting portion is pivoted with the support, the tip end is tightly buckled with or separated from the ratchet wheel, the stop block is installed on a door frame of the gate, the shaft rod is movably arranged on the support, one end of the shaft rod is pivoted with the first connecting portion, the other end of the shaft rod is abutted with or separated from the stop block, and the elastic piece is abutted with the shaft rod and provides elastic force for pushing the shaft rod to be far away from the ratchet wheel.
According to the ratchet wheel pawl type contracting brake mechanism of the nuclear power plant gate, when the door body is in a closed state, one end, far away from the pawl, of the shaft rod is abutted to the stop block, the elastic piece is in an elastic compression state, the tip end of the pawl is separated from the ratchet wheel, and the ratchet wheel is in an unlocking state, so that the first output shaft can rotate; after the door body is opened, one end, far away from the pawl, of the shaft rod is separated from the stop block, the elastic piece pushes the shaft rod to move towards the direction far away from the ratchet wheel, the shaft rod drives the pawl to rotate relative to the support, the first connecting portion of the pawl moves towards the direction far away from the ratchet wheel, the tip of the first connecting portion moves towards the direction close to the ratchet wheel, then the tip of the pawl is tightly buckled with the ratchet wheel, the ratchet wheel is in a locking state, and the first output shaft cannot rotate. The ratchet wheel pawl type band-type brake mechanism of the nuclear power plant gate is simplified in structure, simpler in working principle and high in reliability.
In one embodiment, the bracket comprises fixing blocks, supporting blocks and supporting blocks which are sequentially arranged at intervals, the fixing blocks are pivoted with the second connecting parts, and the shaft rod is movably arranged through the supporting blocks and the supporting blocks.
In one embodiment, the bracket further comprises a pin shaft movably arranged on the fixed block in a penetrating manner, and the pin shaft is connected with the second connecting part.
In one embodiment, the bracket further comprises a bottom plate, the bottom plate is mounted on a door body of the gate, and the fixing block, the supporting block and the supporting block are all arranged on the bottom plate.
In one embodiment, the shaft rod is provided with a supporting plate, the supporting plate is arranged between the supporting block and the supporting plate, the elastic member is arranged between the supporting block and the supporting plate, and two ends of the elastic member elastically abut against the supporting block and the supporting plate respectively.
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, the abutting plate is sleeved on the shaft rod, an abutting column is arranged on the shaft rod, and the abutting column is arranged between the abutting plate and the supporting block.
In one embodiment, the commutator further has an input shaft, which is in driving connection with the first output shaft.
In one embodiment, the commutator further has a second output shaft, the second output shaft and the first output shaft are respectively disposed on two opposite sides of the commutator, the input shaft is disposed between the first output shaft and the second output shaft, and the second output shaft is in transmission connection with the input shaft.
In one embodiment, the first output shaft is sleeved with a first chain wheel, and the second output shaft is sleeved with a second chain wheel.
Drawings
Fig. 1 is a schematic structural view of a ratchet pawl type band-type brake mechanism of a nuclear power plant gate of the present invention;
fig. 2 is a front view of a ratchet pawl type contracting brake mechanism of the nuclear power plant gate shown in fig. 1.
The reference numbers in the figures are:
The brake component 20, the ratchet 21, the bracket 22, the bottom plate 220, the fixing block 221, the supporting block 222, the pin 224, the pawl 23, the first connecting portion 230, the second connecting portion 231, the tip 232, the stopper 24, the shaft 25, the abutting plate 250, the abutting column 251, the elastic member 26,
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 and 2, a ratchet pawl type band-type brake mechanism of a nuclear power plant gate according to an embodiment of the present invention is installed on a nuclear power plant gate. The ratchet pawl type band-type brake mechanism of the nuclear power plant gate comprises a commutator 10 and a band-type brake assembly 20. The commutator 10 is installed on the door body of the gate, and the commutator 10 has a first output shaft 11. The band-type brake assembly 20 is disposed on one side of the commutator 10, and specifically, the band-type brake assembly 20 includes a ratchet 21, a bracket 22, a pawl 23, a stopper 24, a shaft 25 and an elastic member 26. The ratchet 21 is installed on the first output shaft 11, specifically, the ratchet 21 is fixedly sleeved on the first output shaft 11, and the ratchet 21 and the first output shaft 11 are coaxially arranged. The bracket 22 is mounted on the door body of the gate. The pawl 23 includes a first connecting portion 230, a second connecting portion 231 and a tip 232 connected in sequence, it is understood that the second connecting portion 231 is disposed between the first connecting portion 230 and the tip 232, the second connecting portion 231 is pivotally connected to the bracket 22, the tip 232 is disposed corresponding to the circumferential side of the ratchet wheel 21, and the tip 232 is fastened to or separated from the ratchet wheel 21. The stopper 24 is mounted on the door frame of the lock gate. The shaft 25 is movably disposed on the bracket 22, one end of the shaft 25 is pivotally connected to the first connecting portion 230, and the other end of the shaft 25 abuts against or separates from the stopper 24. The elastic member 26 abuts the shaft 25 and provides an elastic force that urges the shaft 25 away from the ratchet 21.
In the ratchet pawl type contracting brake mechanism of the nuclear power plant gate, the commutator 10 and the bracket 22 are all installed on the door body of the gate, the stop block 24 is installed on the door frame of the gate, when the door body is in a closed state, one end of the shaft rod 25, which is far away from the pawl 23, is arranged corresponding to the stop block 24, one end of the shaft rod 25, which is far away from the pawl 23, is abutted against the stop block 24, the elastic piece 26 is in an elastic compression state, the tip 232 of the pawl 23 is separated from the ratchet 21, and the ratchet 21 is in an unlocking state, so that the first; after the door body is opened, one end of the shaft rod 25, which is away from the pawl 23, is separated from the stopper 24, the elastic member 26 pushes the shaft rod 25 to move in a direction away from the ratchet 21, the shaft rod 25 drives the pawl 23 to rotate relative to the bracket 22, in this embodiment, the shaft rod 25 drives the pawl 23 to rotate clockwise relative to the bracket 22, specifically, the first connecting portion 230 of the pawl 23 moves in a direction away from the ratchet 21, the tip 232 of the first connecting portion 230 moves in a direction close to the ratchet 21, then the tip 232 of the pawl 23 is tightly buckled with the ratchet 21, the ratchet 21 is in a locked state, and the first output shaft 11 is not rotatable. The ratchet wheel pawl type band-type brake mechanism of the nuclear power plant gate is simplified in structure, simpler in working principle and high in reliability.
In this embodiment, when the door body of the gate is raised, it means that the door body is opened, and when the door body of the gate is lowered, it means that the door body is closed, and the stopper 24 is provided to be inclined upward in the vertical direction of the door frame of the gate, so that when the door body of the gate is lowered and closed, the end of the shaft 25 away from the pawl 23 can abut against the stopper 24.
The commutator 10 is a rectangular body, and the first output shaft 11 is arranged on one side of the commutator 10. The commutator 10 further comprises an input shaft 12 and a second output shaft 13, the input shaft 12 is arranged adjacent to the first output shaft 11, that is, the side surface of the commutator 10 where the input shaft 12 is located is adjacent to the side surface of the commutator 10 where the first output shaft 11 is located, and the input shaft 12 is in transmission connection with the first output shaft 11, so that when the input shaft 12 is driven to rotate, the input shaft 12 drives the first output shaft 11 to rotate. The second output shaft 13 is disposed on one side of the commutator 10 opposite to the first output shaft 11, that is, the second output shaft 13 and the first output shaft 11 are disposed on two opposite sides of the commutator 10, respectively, and the input shaft 12 is disposed between the first output shaft 11 and the second output shaft 13. The second output shaft 13 is arranged coaxially with the first output shaft 11, and the second output shaft 13 is in transmission connection with the input shaft 12, so that when the input shaft 12 is driven to rotate, the input shaft 12 drives the second output shaft 13 to rotate. In the present embodiment, the input shaft 12 is provided perpendicular to the first output shaft 11 and the second output shaft 13, and the input shaft 12 reverses the direction of the first output shaft 11 and the second output shaft 13 by 90 ° using the reverser 10.
It should be noted that, when the ratchet 21 is in the locked state, the first output shaft 11 is not rotatable, the input shaft 12 is not rotatable, and the second output shaft 13 is not rotatable.
In this embodiment, the input shaft 12 is used for connecting a jacking mechanism on the gate, the first output shaft 11 is used for connecting a locking mechanism at the lower end of the gate, the second output shaft 13 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 at the lower end of the gate through the input shaft 12 and the first output shaft 11, the power of the jacking mechanism is also transmitted to the locking mechanism at the upper end of the gate through the input shaft 12 and the second output shaft 13, and the door body of the gate and the door frame of the gate are locked or unlocked through the. It can be understood that when the tip 232 of the pawl 23 is separated from the ratchet wheel 21 and the ratchet wheel 21 is in the unlocking state, the input shaft 12, the first output shaft 11 and the second output shaft 13 can all rotate, and at this time, the jacking mechanism and the locking mechanism can all operate normally. When the tip 232 of the pawl 23 is fastened to the ratchet wheel 21 and the ratchet wheel 21 is in a locked state, the input shaft 12, the first output shaft 11 and the second output shaft 13 are not rotatable, and at this time, the jacking mechanism and the locking mechanism are in a locked state.
Further, a first chain wheel 14 is sleeved on the first output shaft 11, the first chain wheel 14 and the first output shaft 11 are coaxially arranged and synchronously rotate along with the first output shaft 11, and the first chain wheel 14 is in transmission connection with a locking mechanism at the lower end of the gate through a toothed chain. The second output shaft 13 is sleeved with a second chain wheel 15, the second chain wheel 15 and the second output shaft 13 are coaxially arranged, the second output shaft 13 synchronously rotates, and the second chain wheel 15 is in transmission connection with a locking mechanism at the upper end of the gate through a toothed chain.
The bracket 22 includes a bottom plate 220, a fixing block 221 and a supporting block 222, the bottom plate 220 is mounted on the door body of the gate, the fixing block 221 and the supporting block 222 are arranged at intervals, the fixing block 221 is arranged near the ratchet 21, and the supporting block 222 is arranged near the stopper 24, that is, the supporting block 222 is arranged between the fixing block 221 and the stopper 24. In this embodiment, the number of the supporting blocks 222 is two, two supporting blocks 222 are disposed at intervals, one supporting block 222 is disposed near the fixing block 221, and the other supporting block 222 is disposed near the stopper 24. The fixing block 221 is pivotally connected to the second connecting portion 231, and specifically, the bracket 22 further includes a pin 224 movably disposed on the fixing block 221 in a penetrating manner, the pin 224 is further disposed on the fixing block 221 in a penetrating manner through a bearing, the pin 224 is connected to the second connecting portion 231, and further, the pin 224 may be sleeved on or screwed to the second connecting portion 231.
The shaft 25 is movably disposed through the support block 222. The shaft rod 25 is provided with a resisting plate 250, the resisting plate 250 is arranged between the two supporting blocks 222, the elastic element 26 is arranged between the supporting block 222 and the resisting plate 250 which are arranged close to the fixing block 221, and two ends of the elastic element 26 are respectively elastically abutted against the supporting block 222 and the resisting plate 250 which are arranged close to the fixing block 221. Therefore, when the end of the shaft 25 away from the pawl 23 abuts against the stopper 24, the shaft 25 moves a predetermined distance in the direction approaching the ratchet 21, the abutting plate 250 moves a predetermined distance in the direction approaching the ratchet 21 in synchronization with the shaft 25, and the elastic member 26 is compressed by the engagement between the abutting plate 250 and the supporting block 222 disposed near the fixed block 221. When the end of the shaft 25 away from the pawl 23 is separated from the stopper 24, the elastic member 26 rebounds and pushes the resisting plate 250 to move in a direction away from the ratchet 21, thereby driving the shaft 25 to move in a direction away from the ratchet 21.
Further, the abutting plate 250 is annular, the abutting plate 250 is sleeved on the shaft rod 25, the shaft rod 25 is provided with an abutting column 251, the abutting column 251 is arranged between the abutting plate 250 and the supporting block 222 arranged close to the stopper 24, and the abutting plate 250 is limited through the abutting column 251. It should be noted that, when the shaft 25 is provided with the abutting column 251, the abutting plate 250 is fixedly or movably sleeved on the shaft 25, and when the shaft 25 is not provided with the abutting column 251, the abutting plate 250 is fixedly sleeved on the shaft 50, that is, the abutting plate 70 cannot move relative to the shaft 25.
In this embodiment, the elastic member 26 is a coil spring, and the elastic member 26 is sleeved on the shaft 25.
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 (10)
1. The utility model provides a ratchet pawl formula band-type brake mechanism of nuclear power plant gate which characterized in that includes:
the commutator is arranged on the gate body of the gate; the commutator has a first output shaft;
the brake component comprises a ratchet wheel, a bracket, a pawl, a stop block, a shaft lever and an elastic piece; the ratchet wheel is installed on the first output shaft, the support is installed on a door body of the gate, the pawl comprises a first connecting portion, a second connecting portion and a tip end which are sequentially connected, the second connecting portion is pivoted with the support, the tip end is tightly buckled with or separated from the ratchet wheel, the stop block is installed on a door frame of the gate, the shaft rod is movably arranged on the support, one end of the shaft rod is pivoted with the first connecting portion, the other end of the shaft rod is abutted with or separated from the stop block, and the elastic piece is abutted with the shaft rod and provides elastic force for pushing the shaft rod to be far away from the ratchet wheel.
2. The ratchet pawl type contracting brake mechanism of the nuclear power plant gate of claim 1, wherein the bracket comprises fixing blocks and supporting blocks arranged at intervals, the fixing blocks are pivoted with the second connecting portion, and the shaft rod is movably arranged through the supporting blocks.
3. The ratchet pawl type contracting brake mechanism of the nuclear power plant gate of claim 2, wherein the bracket further comprises a pin movably disposed on the fixing block, and the pin is connected with the second connecting portion.
4. The ratchet pawl type contracting brake mechanism of the nuclear power plant gate of claim 2, wherein the support further comprises a bottom plate, the bottom plate is mounted on a door body of the gate, and the fixing block and the supporting block are both arranged on the bottom plate.
5. The ratchet pawl type contracting brake mechanism of the nuclear power plant gate of claim 2, wherein the number of the supporting blocks is two, one of the supporting blocks is arranged close to the fixing block, and the other supporting block is arranged close to the baffle; the shaft lever is provided with a supporting plate, the supporting plate is arranged between the two supporting blocks, the elastic piece is arranged between the supporting block and the supporting plate which are arranged close to the fixed block, and two ends of the elastic piece are respectively elastically abutted against the supporting block and the supporting plate which are arranged close to the fixed block.
6. The ratchet pawl type contracting brake mechanism of the nuclear power plant gate of claim 5, wherein the elastic member is a coil spring, and the elastic member is sleeved on the shaft rod.
7. The ratchet wheel pawl type contracting brake mechanism of the nuclear power plant gate of claim 5, wherein the abutting plate is annular, the abutting plate is sleeved on the shaft rod, an abutting column is arranged on the shaft rod, and the abutting column is arranged between the abutting plate and the supporting block close to the stop block.
8. The ratchet pawl type internal contracting brake mechanism of the nuclear power plant gate of claim 1, wherein the commutator further has an input shaft, and the input shaft is in transmission connection with the first output shaft.
9. The ratchet pawl type contracting brake mechanism of the nuclear power plant gate of claim 8, wherein the commutator further has a second output shaft, the second output shaft and the first output shaft are respectively arranged at two opposite sides of the commutator, the input shaft is arranged between the first output shaft and the second output shaft, and the second output shaft is in transmission connection with the input shaft.
10. The ratchet pawl type contracting brake mechanism of the nuclear power plant gate of claim 9, wherein a first chain wheel is sleeved on the first output shaft, and a second chain wheel is sleeved on the second output shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021478873.0U CN213419722U (en) | 2020-07-23 | 2020-07-23 | Ratchet pawl type band-type brake mechanism of nuclear power plant gate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021478873.0U CN213419722U (en) | 2020-07-23 | 2020-07-23 | Ratchet pawl type band-type brake mechanism of nuclear power plant gate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213419722U true CN213419722U (en) | 2021-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021478873.0U Active CN213419722U (en) | 2020-07-23 | 2020-07-23 | Ratchet pawl type band-type brake mechanism of nuclear power plant gate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213419722U (en) |
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2020
- 2020-07-23 CN CN202021478873.0U patent/CN213419722U/en active Active
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