CN116572909B - Single track hangs oil pressure regulation formula overspeed protector and hydraulic system - Google Patents
Single track hangs oil pressure regulation formula overspeed protector and hydraulic system Download PDFInfo
- Publication number
- CN116572909B CN116572909B CN202310462980.6A CN202310462980A CN116572909B CN 116572909 B CN116572909 B CN 116572909B CN 202310462980 A CN202310462980 A CN 202310462980A CN 116572909 B CN116572909 B CN 116572909B
- Authority
- CN
- China
- Prior art keywords
- oil
- pressure
- pressure oil
- port
- overspeed
- 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
- 230000001012 protector Effects 0.000 title claims abstract description 38
- 230000001105 regulatory effect Effects 0.000 claims abstract description 13
- 230000000903 blocking effect Effects 0.000 claims description 12
- 230000009471 action Effects 0.000 abstract description 13
- 230000003137 locomotive effect Effects 0.000 abstract description 7
- 230000035945 sensitivity Effects 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 176
- 230000033001 locomotion Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000001154 acute effect Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
- B60T7/126—Brakes for railway vehicles coming into operation in case of exceeding a predetermined speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
- B60T13/14—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using accumulators or reservoirs fed by pumps
- B60T13/141—Systems with distributor valve
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H11/00—Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types
- B61H11/06—Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types of hydrostatic, hydrodynamic, or aerodynamic brakes
- B61H11/08—Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types of hydrostatic, hydrodynamic, or aerodynamic brakes comprising a pump or the like circulating fluid, braking being effected by throttling of the circulation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a monorail crane oil pressure regulating overspeed protector and a hydraulic system, belonging to the technical field of railway vehicle braking; the hydraulic system comprises an overspeed protector, a braking reversing valve, a hydraulic pump, a pressure reducing valve, a low-pressure oil pipe, a hydraulic control oil pipe, a reset oil pipe and a brake. The oil pressure regulating overspeed protector of the monorail crane simplifies the complex mechanical structure of the original overspeed protector, converts locomotive speed signals into oil pressure signals, replaces the actions of the original mechanical structures such as a deflector rod and the like, avoids the false triggering problem caused by running vibration, and realizes the combination of sensitivity of overspeed braking and accuracy of judging locomotive overspeed.
Description
Technical Field
The invention relates to the technical field of railway vehicle braking, in particular to a monorail crane oil pressure regulating overspeed protector and a hydraulic system.
Background
The monorail crane auxiliary transportation system completes the transportation of underground equipment, personnel and materials through an I-shaped steel rail hung above a mine tunnel. In order to ensure that the monorail crane can stop in time when the monorail crane is in fault and prevent serious safety accidents, a centrifugal overspeed protection device is generally adopted to carry out emergency braking on the monorail crane exceeding the maximum running speed. However, the conventional centrifugal overspeed protection device converts a speed signal into an action signal of the centrifugal device, the centrifugal device is used for poking a mechanical structure against the brake reversing valve, the action signal of the centrifugal device is converted into an action signal of a valve core of the brake reversing valve, and the brake and the oil tank are communicated through the reversing valve, so that emergency braking is realized.
Due to the severe running condition in the pit, continuous and severe vibration can be generated when the monorail crane runs, the sensitivity of the mechanical structure is too high in the process of converting the action signal of the centrifugal device into the action signal of the valve core of the braking reversing valve, and the sensitivity of overspeed braking and the accuracy of judging the overspeed of the locomotive cannot be considered because of false triggering of the brake caused by running vibration.
Disclosure of Invention
Aiming at the technical defects, the invention aims to provide the oil pressure regulation type overspeed protector of the monorail crane and the hydraulic system, which convert locomotive speed signals into oil pressure signals to replace the actions of the original deflector rod and other mechanical structures, so that the false triggering problem caused by running vibration is avoided, and the sensitivity of overspeed braking and the accuracy of judging locomotive overspeed are both realized.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention provides a monorail crane oil pressure regulation type overspeed protector, which comprises a fixed ring, wherein a moving ring which is matched with the fixed ring and coaxial with the fixed ring is arranged in a cavity of the fixed ring, the fixed ring comprises a fixed ring shell, an annular low-pressure oil groove and a pressure oil groove are formed in the inner wall of the fixed ring shell, and a low-pressure oil port communicated with the low-pressure oil groove and a pressure oil port communicated with the pressure oil groove are formed in the outer wall of the fixed ring shell; the outer wall of the moving coil and the pressure oil groove and the low-pressure oil groove form an independent closed cavity respectively; the fixed ring is fixed on the body of the overspeed protection trolley, and the bottom of the moving ring is connected with the speed taking wheel shaft of the overspeed protection trolley;
the movable coil comprises a movable coil shell, a movable coil pressure oil port and a movable coil low-pressure oil port which are matched with the pressure oil groove and the low-pressure oil groove are formed in the movable coil shell, and a centrifugal block, a head limiting block and a tail limiting block are arranged in the movable coil shell and used for ensuring that the centrifugal block moves linearly relative to the movable coil;
the centrifugal block comprises a centrifugal block head and a centrifugal block tail, and the tail end of the centrifugal block tail is provided with an oil blocking column which is matched with the pressure oil port of the moving coil and can block the pressure oil port of the moving coil;
two inner connecting shafts are symmetrically fixed on two sides of the tail of the centrifugal block, the inner connecting shafts are connected with one end of a spring assembly in a sliding mode, the other end of the spring assembly, which is far away from the inner connecting shaft, is connected with an outer connecting shaft in a sliding mode, and the bottom of the outer connecting shaft is fixed on a bottom plate of the movable coil shell.
The upper end of the moving coil shell is provided with a moving coil cover which is covered and sealed, a reset oil cavity is formed among the moving coil shell, the head limiting block, the moving coil cover and the head of the centrifugal block, the part except the reset oil cavity of the inner cavity of the moving coil is a main oil cavity, and the reset oil cavity is communicated with the main oil cavity through an external pipeline; and the moving coil pressure oil port and the moving coil low-pressure oil port are communicated with the main oil cavity.
Preferably, the width and the maximum outer diameter of the low-pressure oil groove and the pressure oil groove are the same, and the inner diameters of the low-pressure oil port and the pressure oil port are smaller than the width of the low-pressure oil groove.
Preferably, the moving coil cover comprises a moving coil cover plate, a main oil port communicated with the main oil cavity and a reset oil port communicated with the reset oil cavity are formed in the moving coil cover plate, the main oil port is communicated with the reset oil port through a hydraulic hose, and a hydraulic quick connector is arranged at one end, connected with the main oil port, of the hydraulic hose.
Preferably, the head limiting block is semi-wrapped at the head of the centrifugal block, so that the reset oil cavity and the main oil cavity are not communicated in the moving coil, two tail limiting blocks are arranged and symmetrically arranged at two sides of the tail of the centrifugal block.
Preferably, the spring assembly comprises a hollow sleeve which can stretch out and draw back, two lantern rings are symmetrically fixed at two ends of the hollow sleeve, the two lantern rings are correspondingly nested on the outer connecting shaft and the inner connecting shaft, a spring is arranged in the hollow sleeve, two ends of the spring are fixed with two ends of the hollow sleeve, and the spring is guaranteed to deform only along the axial direction.
Preferably, two connecting plates are symmetrically fixed on two sides of the tail of the centrifugal block, and an inner connecting shaft is fixed on each connecting plate.
The invention also provides a hydraulic system adopting the monorail crane oil pressure regulating overspeed protector, which comprises an overspeed protector, a braking reversing valve, a hydraulic pump, a pressure reducing valve, a low-pressure oil pipe, a hydraulic control oil pipe, a reset oil pipe and a brake; the high-pressure oil port of the hydraulic pump is divided into two oil paths, one of the two oil paths is connected with one port of the hydraulic control oil pipe through the pressure reducing valve, and the other oil path directly enters the reset oil pipe; two ports of the hydraulic control oil pipe are respectively connected with a control oil port of the brake reversing valve and a pressure oil port of the overspeed protector; the other end of the reset oil pipe is provided with another hydraulic quick connector for connecting an overspeed protector, one end of the low-pressure oil pipe is connected with an oil tank, and the other end of the low-pressure oil pipe is connected with a low-pressure oil port of the overspeed protector; the P port of the braking reversing valve is communicated with the brake.
Preferably, the braking reversing valve is a hydraulic control reversing valve, and the hydraulic pump is an original auxiliary oil supply pump of the monorail crane hydraulic driving system.
The invention has the beneficial effects that:
(1) The overspeed protector provided by the invention converts a speed signal into an action signal of the centrifugal block by using the spring, and converts the action signal of the centrifugal block into a pressure signal of a control oil port of the hydraulic control dynamic reversing valve by using the on-off state of the pressure oil port and the low pressure oil port of the oil blocking column on the centrifugal block.
(2) The overspeed protector provided by the invention directly outputs the pressure signal of oil, can be directly used for controlling the valve core movement of the hydraulic control reversing valve, and simplifies the complex mechanical structure of the original overspeed protector.
(3) The overspeed protector provided by the invention utilizes the change of oil pressure to replace the action of the original mechanical structures such as the deflector rod, so that the problem of false triggering caused by running vibration is avoided, and the sensitivity of overspeed braking and the accuracy of judging the overspeed of the locomotive are both realized.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a hydraulic pressure regulating overspeed protector for a monorail crane according to an embodiment of the present invention;
FIG. 2 is a schematic diagram (cross-sectional view) of a hydraulic pressure regulating overspeed protector for a monorail crane according to an embodiment of the present invention;
FIG. 3 is a schematic view of a spring assembly according to an embodiment of the present invention;
fig. 4 is a connection diagram of a hydraulic system according to an embodiment of the present invention.
Reference numerals illustrate:
1-overspeed protector, 2-braking reversing valve, 3-hydraulic pump, 4-relief valve, 5-low pressure oil pipe, 6-hydraulic oil pipe, 7-return oil pipe, 8-brake, 111-fixed ring shell, 112-pressure oil port, 113-pressure oil groove, 114-low pressure oil port, 115-low pressure oil groove, 121-moving ring shell, 122-tail stopper, 123-head stopper, 124-outer connecting shaft, 125-moving ring pressure oil port, 126-moving ring low pressure oil port, 131-moving ring cover plate, 132-hydraulic quick connector, 133-hydraulic hose, 134-main oil port, 135-return oil port, 14-centrifugal block, 141-centrifugal block head, 142-centrifugal block tail, 143-oil blocking column, 144-inner connecting shaft, 15-spring assembly, 151-spring, 152-hollow sleeve, 91-return oil cavity, 92-main oil cavity.
Description of the embodiments
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 3, the oil pressure regulation type overspeed protector of the monorail crane comprises a fixed ring 11, wherein a moving ring 12 which is matched with the fixed ring 11 and coaxial with the fixed ring 11 is arranged in a cavity of the fixed ring 11, the fixed ring 11 comprises a fixed ring shell 111, an annular low-pressure oil groove 115 and a pressure oil groove 113 are formed in the inner wall of the fixed ring shell 111, and a low-pressure oil port 114 which is communicated with the low-pressure oil groove 115 and a pressure oil port 112 which is communicated with the pressure oil groove 113 are formed in the outer wall of the fixed ring shell 111; the outer wall of the moving coil 12 and the pressure oil groove 113 and the low-pressure oil groove 115 form an independent closed cavity respectively; the fixed ring 11 is fixed on the body of the overspeed protection trolley, and the bottom of the movable ring 12 is connected with the speed taking wheel shaft of the overspeed protection trolley;
the width and the maximum outer diameter dimensions of the low-pressure oil groove 115 and the pressure oil groove 113 are the same, and the inner diameters of the low-pressure oil port 114 and the pressure oil port 112 are smaller than the width of the low-pressure oil groove 115.
The moving coil 12 includes a moving coil housing 121, a moving coil pressure oil port 125 and a moving coil low pressure oil port 126 which are adapted to the pressure oil tank 113 and the low pressure oil tank 115 are provided on the moving coil housing 121, and a centrifugal block 14, and a head limiting block 123 and a tail limiting block 122 for ensuring the centrifugal block 14 to do linear motion relative to the moving coil 12 are provided in the moving coil housing 121;
the head limiting block 123 is semi-wrapped on the head 141 of the centrifugal block, so that the reset oil cavity 91 and the main oil cavity 92 are not communicated inside the moving coil 12, two tail limiting blocks 122 are arranged, and the two tail limiting blocks are symmetrically arranged on two sides of the tail 142 of the centrifugal block.
The centrifugal block 14 comprises a centrifugal block head 141 and a centrifugal block tail 142, and the tail end of the centrifugal block tail 142 is provided with an oil blocking column 143 which is matched with the moving coil pressure oil port 125 and can block the moving coil pressure oil port;
two connecting plates are symmetrically fixed on two sides of the tail 142 of the centrifugal block, and an inner connecting shaft 144 is fixed on each connecting plate. The inner connecting shaft 144 is slidably connected to one end of the spring assembly 15, the other end of the spring assembly 15 away from the inner connecting shaft 144 is slidably connected to the outer connecting shaft 124, and the bottom of the outer connecting shaft 124 is fixed to the bottom plate of the moving coil housing 121.
The spring assembly 15 comprises a hollow sleeve 152 capable of telescoping, two lantern rings are symmetrically fixed at two ends of the hollow sleeve 152 and correspondingly nested on the outer connecting shaft 124 and the inner connecting shaft 144, a spring 151 is arranged in the hollow sleeve 152, two ends of the spring 151 are fixed with two ends of the hollow sleeve 152, and the spring 151 is guaranteed to deform only along the axial direction.
The upper end of the moving coil housing 121 is provided with a moving coil cover 13 which is covered and sealed, a reset oil cavity 91 is formed among the moving coil housing 121, a head limiting block 123, the moving coil cover 13 and a head 141 of the centrifugal block, a part except the reset oil cavity 91 of the inner cavity of the moving coil 12 is a main oil cavity 92, and the reset oil cavity 91 is communicated with the main oil cavity 92 through an external pipeline; the moving coil pressure oil port 125 and the moving coil low pressure oil port 126 are communicated with the main oil cavity 92.
The moving coil cover 13 comprises a moving coil cover plate 131, a main oil port 134 communicated with the main oil cavity 92 and a reset oil port 135 communicated with the reset oil cavity 91 are formed in the moving coil cover plate 131, the main oil port 134 and the reset oil port 135 are communicated through a hydraulic hose 133, and a hydraulic quick connector 132 is arranged at one end, connected with the main oil port 134, of the hydraulic hose 133.
Referring to fig. 4, the invention also provides a hydraulic system adopting the monorail crane oil pressure regulating overspeed protector, which comprises an overspeed protector 1, a braking reversing valve 2, a hydraulic pump 3, a pressure reducing valve 4, a low-pressure oil pipe 5, a hydraulic control oil pipe 6, a reset oil pipe 7 and a brake 8; the high-pressure oil port of the hydraulic pump 3 is divided into two oil paths, one of the two oil paths is connected with one port of the hydraulic control oil pipe 6 through the pressure reducing valve 4, and the other oil path directly enters the reset oil pipe 7; two ports of the hydraulic control oil pipe 6 are respectively connected with a control oil port of the brake reversing valve 2 and a pressure oil port 112 of the overspeed protector 1; the other end of the reset oil pipe 7 is provided with another hydraulic quick connector 132 for connecting the hydraulic quick connector 132 of the overspeed protector 1, one end of the low-pressure oil pipe 5 is connected with an oil tank, and the other end is connected with the low-pressure oil port 114 of the overspeed protector 1; the P port of the brake reversing valve 2 is communicated with a brake 8.
The braking reversing valve 2 is a hydraulic control reversing valve, and the hydraulic pump 3 is an original auxiliary oil supply pump of a monorail crane hydraulic driving system.
Working principle: when the monorail crane is overspeed, the centrifugal block 14 moves as follows:
the spring 151 remains compressed regardless of the position of the centrifugal mass 14. When the axial direction of the spring 151 and the movement direction of the centrifugal block 14 form an acute angle, the spring 151 blocks the movement of the centrifugal block 14, and the oil blocking column 143 is prevented from being pulled out. When the included angle between the axial direction of the spring 151 and the movement direction of the centrifugal block 14 is an obtuse angle, the spring 151 pushes the centrifugal block 14 to move, so as to accelerate the extraction of the oil blocking column 143. When the centrifugal block 14 is triggered, the head of the centrifugal block 14 is propped against the inner wall of the movable ring 12 under the action of the spring 151, and the extraction state of the oil blocking column 143 is maintained. When the included angle between the axial direction of the spring 151 and the movement direction of the centrifugal block 14 is changed from an acute angle to an obtuse angle, the oil blocking column 143 is not completely pulled out, so that the centrifugal block 14 is ensured not to automatically reset due to the fact that the centrifugal force is reduced by the braking of a locomotive.
When the monorail crane does not overspeed, the main oil cavity 92 is communicated with the reset oil cavity 91. Under the action of spring force, the tail of the centrifugal block 14 is propped against the inner wall of the movable coil 12, and the oil blocking column 143 blocks the pressure oil port 125 of the movable coil, so as to isolate the main oil cavity 92 and the pressure oil groove 113. The hydraulic control oil pipe 6 is not communicated with the oil tank, and oil pressure exists inside the hydraulic control oil pipe. The oil way of the braking reversing valve 2 is disconnected, and the monorail crane normally operates.
When the monorail crane overspeed occurs, the centrifugal block 14 overcomes the resistance of the spring 151 under the action of centrifugal force and slides relatively with the moving coil 12, and the oil in the reset oil cavity 91 enters the main oil cavity 92 through the hydraulic hose 133. The oil blocking column 143 is separated from the moving coil pressure oil port 125, and communicates the pressure oil groove 113 with the main oil chamber 92. The hydraulic control oil pipe 6 is communicated with the oil tank, and the pressure of the oil in the hydraulic control oil pipe is instantaneously reduced. The braking reversing valve 2 is communicated with an oil way, the brake 8 is used for pressure relief, and the monorail crane is braked emergently.
After the single track crane is out of order, the hydraulic hose 133 on the movable coil cover 13 is separated from the main oil port 134 and is connected with the quick connector 71 on the reset oil pipe 7 through the hydraulic quick connector 132, and the high-pressure oil of the reset oil pipe 7 is introduced into the reset oil cavity 91 to push the centrifugal block 14 to reset against the spring force. The oil blocking column 143 re-blocks the moving coil pressure oil port 125, isolating the main oil chamber 92 from the pressure oil tank 113. The pilot oil pipe 6 is not communicated with the oil tank any more, and the internal oil pressure is reestablished. The brake reversing valve 2 is opened again to allow the brake 8 to release the track.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (8)
1. A monorail crane oil pressure regulation type overspeed protector is characterized in that: the device comprises a fixed ring (11), wherein a moving ring (12) which is matched with the fixed ring and is coaxial with the fixed ring is arranged in a cavity of the fixed ring (11), the fixed ring (11) comprises a fixed ring shell (111), an annular low-pressure oil groove (115) and a pressure oil groove (113) are formed in the inner wall of the fixed ring shell (111), and a low-pressure oil port (114) which is communicated with the low-pressure oil groove (115) and a pressure oil port (112) which is communicated with the pressure oil groove (113) are formed in the outer wall of the fixed ring shell (111); the outer wall of the moving coil (12) forms an independent closed cavity with the pressure oil groove (113) and the low-pressure oil groove (115) respectively; the fixed ring (11) is fixed on the body of the overspeed protection trolley, and the bottom of the moving ring (12) is connected with a speed taking wheel shaft of the overspeed protection trolley;
the movable coil (12) comprises a movable coil shell (121), a movable coil pressure oil port (125) and a movable coil low-pressure oil port (126) which are matched with the pressure oil groove (113) and the low-pressure oil groove (115) are formed in the movable coil shell (121), and a centrifugal block (14) and a head limiting block (123) and a tail limiting block (122) which are used for ensuring that the centrifugal block (14) moves linearly relative to the movable coil (12) are arranged in the movable coil shell (121);
the centrifugal block (14) comprises a centrifugal block head (141) and a centrifugal block tail (142), and the tail end of the centrifugal block tail (142) is provided with an oil blocking column (143) which is matched with the moving coil pressure oil port (125) and can block the moving coil pressure oil port;
two inner connecting shafts (144) are symmetrically fixed on two sides of the tail part (142) of the centrifugal block, the inner connecting shafts (144) are connected to one end of a spring assembly (15) in a sliding mode, the other end, far away from the inner connecting shafts (144), of the spring assembly (15) is connected to an outer connecting shaft (124) in a sliding mode, and the bottom of the outer connecting shaft (124) is fixed on a bottom plate of a movable coil shell (121);
the upper end of the moving coil shell (121) is provided with a moving coil cover (13) which is covered and sealed, a reset oil cavity (91) is formed among the moving coil shell (121), a head limiting block (123), the moving coil cover (13) and a centrifugal block head (141), the part except the reset oil cavity (91) of the inner cavity of the moving coil (12) is a main oil cavity (92), and the reset oil cavity (91) is communicated with the main oil cavity (92) through an external pipeline; the moving coil pressure oil port (125) and the moving coil low pressure oil port (126) are communicated with the main oil cavity (92).
2. The monorail crane oil pressure regulating overspeed protector of claim 1, wherein: the width and the maximum external diameter size of the low-pressure oil groove (115) are the same as those of the pressure oil groove (113), and the internal diameters of the low-pressure oil port (114) and the pressure oil port (112) are smaller than the width of the low-pressure oil groove (115).
3. A monorail crane oil pressure regulated overspeed protector as defined in claim 2, wherein: the movable coil cover (13) comprises a movable coil cover plate (131), a main oil port (134) communicated with the main oil cavity (92) and a reset oil port (135) communicated with the reset oil cavity (91) are formed in the movable coil cover plate (131), the main oil port (134) is communicated with the reset oil port (135) through a hydraulic hose (133), and a hydraulic quick connector (132) is arranged at one end, connected with the main oil port (134), of the hydraulic hose (133).
4. A monorail crane oil pressure regulated overspeed protector as defined in claim 3 wherein: the head limiting block (123) is semi-wrapped on the head (141) of the centrifugal block, so that the reset oil cavity (91) and the main oil cavity (92) are not communicated in the moving coil (12), two tail limiting blocks (122) are arranged, and the two tail limiting blocks are symmetrically arranged on two sides of the tail (142) of the centrifugal block.
5. The monorail crane oil pressure regulating overspeed protector of claim 4, wherein: the spring assembly (15) comprises a hollow sleeve (152) which can stretch out and draw back, two lantern rings are symmetrically fixed at two ends of the hollow sleeve (152), the two lantern rings are correspondingly nested on the outer connecting shaft (124) and the inner connecting shaft (144), a spring (151) is arranged in the hollow sleeve (152), two ends of the spring (151) are fixed with two ends of the hollow sleeve (152), and the spring (151) is guaranteed to deform only along the axial direction.
6. The monorail crane oil pressure regulating overspeed protector of claim 4, wherein: two connecting plates are symmetrically fixed on two sides of the tail part (142) of the centrifugal block, and an inner connecting shaft (144) is fixed on each connecting plate.
7. A hydraulic system employing the monorail crane oil pressure regulated overspeed protector of claim 5, characterized in that: the hydraulic system comprises an overspeed protector (1), a braking reversing valve (2), a hydraulic pump (3), a pressure reducing valve (4), a low-pressure oil pipe (5), a hydraulic control oil pipe (6), a reset oil pipe (7) and a brake (8); the high-pressure oil port of the hydraulic pump (3) is divided into two oil paths, one of the two oil paths is connected with one port of the hydraulic control oil pipe (6) through the pressure reducing valve (4), and the other oil path directly enters the reset oil pipe (7); two ports of the hydraulic control oil pipe (6) are respectively connected with a control oil port of the brake reversing valve (2) and a pressure oil port (112) of the overspeed protector (1); the other end of the reset oil pipe (7) is provided with another hydraulic quick connector (132) for connecting the overspeed protector (1), one end of the low-pressure oil pipe (5) is connected with an oil tank, and the other end is connected with a low-pressure oil port (114) of the overspeed protector (1); the P port of the braking reversing valve (2) is communicated with a brake (8).
8. The hydraulic system of claim 7, wherein: the braking reversing valve (2) is a hydraulic control reversing valve, and the hydraulic pump (3) is an original auxiliary oil supply pump of a monorail crane hydraulic driving system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310462980.6A CN116572909B (en) | 2023-04-26 | 2023-04-26 | Single track hangs oil pressure regulation formula overspeed protector and hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310462980.6A CN116572909B (en) | 2023-04-26 | 2023-04-26 | Single track hangs oil pressure regulation formula overspeed protector and hydraulic system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116572909A CN116572909A (en) | 2023-08-11 |
| CN116572909B true CN116572909B (en) | 2023-10-13 |
Family
ID=87536851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310462980.6A Active CN116572909B (en) | 2023-04-26 | 2023-04-26 | Single track hangs oil pressure regulation formula overspeed protector and hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116572909B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202279132U (en) * | 2011-11-03 | 2012-06-20 | 徐州雷曼机械科技有限公司 | Buffering device of brake of mining monorail crane |
| CN102501880A (en) * | 2011-11-03 | 2012-06-20 | 徐州雷曼机械科技有限公司 | Brake buffer device of mining monorail crane |
| JP2016211685A (en) * | 2015-05-11 | 2016-12-15 | トヨタ自動車株式会社 | Vehicular controller |
| CN109058193A (en) * | 2018-09-28 | 2018-12-21 | 四川耐特阀门有限公司 | A kind of monorail crane brake fluid system |
| CN112208554A (en) * | 2019-11-29 | 2021-01-12 | 丁雷超 | Overspeed protection device for pneumatic monorail crane |
| CN214527724U (en) * | 2020-12-07 | 2021-10-29 | 徐州立人单轨运输装备有限公司 | Electro-hydraulic driven monorail crane vehicle |
| CN113830672A (en) * | 2021-11-26 | 2021-12-24 | 徐州徐工基础工程机械有限公司 | Single track hangs centrifugation overspeed protection device with adjustable |
| WO2022078478A1 (en) * | 2020-10-15 | 2022-04-21 | 中国第一汽车股份有限公司 | Hydraulic control system for automatic transmission |
| CN115853931A (en) * | 2023-03-03 | 2023-03-28 | 太原矿机电气股份有限公司 | Speed-limiting brake control system with adjustable speed limit value |
-
2023
- 2023-04-26 CN CN202310462980.6A patent/CN116572909B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202279132U (en) * | 2011-11-03 | 2012-06-20 | 徐州雷曼机械科技有限公司 | Buffering device of brake of mining monorail crane |
| CN102501880A (en) * | 2011-11-03 | 2012-06-20 | 徐州雷曼机械科技有限公司 | Brake buffer device of mining monorail crane |
| JP2016211685A (en) * | 2015-05-11 | 2016-12-15 | トヨタ自動車株式会社 | Vehicular controller |
| CN109058193A (en) * | 2018-09-28 | 2018-12-21 | 四川耐特阀门有限公司 | A kind of monorail crane brake fluid system |
| CN112208554A (en) * | 2019-11-29 | 2021-01-12 | 丁雷超 | Overspeed protection device for pneumatic monorail crane |
| WO2022078478A1 (en) * | 2020-10-15 | 2022-04-21 | 中国第一汽车股份有限公司 | Hydraulic control system for automatic transmission |
| CN214527724U (en) * | 2020-12-07 | 2021-10-29 | 徐州立人单轨运输装备有限公司 | Electro-hydraulic driven monorail crane vehicle |
| CN113830672A (en) * | 2021-11-26 | 2021-12-24 | 徐州徐工基础工程机械有限公司 | Single track hangs centrifugation overspeed protection device with adjustable |
| CN115853931A (en) * | 2023-03-03 | 2023-03-28 | 太原矿机电气股份有限公司 | Speed-limiting brake control system with adjustable speed limit value |
Non-Patent Citations (1)
| Title |
|---|
| 郑礼成 ; .单轨吊制动车关键部件设计与分析.煤矿机电.2017,(第02期),第72-74页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116572909A (en) | 2023-08-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106402077B (en) | Hydraulic actuator class output speed controlled hydraulic circuit system | |
| US3890786A (en) | Pneumatic to hydraulic converter with parking brake | |
| CN108518386A (en) | A kind of cushion cylinder | |
| CN106043258B (en) | Brake pump and its application on loading machine | |
| US4467605A (en) | Hydro-pneumatic actuator with automatic slack adjuster | |
| CN107478449B (en) | Auxiliary acceleration and deceleration device for model train test and application method | |
| CN103486171A (en) | Brake cylinder of hydraulic brake device of railway vehicle | |
| CN116572909B (en) | Single track hangs oil pressure regulation formula overspeed protector and hydraulic system | |
| CN101973263A (en) | Anti-leakage two-way air braking system for variable-frequency speed-regulating industrial and mineral electric locomotive | |
| CN204095829U (en) | A kind of track laying machine Pneumatic brake systems | |
| CN205472381U (en) | A hoisting gear for among oblique pitshaft driving in power station | |
| CN106015130A (en) | Large-thrust high-speed hydraulic cylinder and work method thereof | |
| CN208053357U (en) | Locomotive remotely alleviates system with EMU parking brake | |
| CN108556853B (en) | A kind of train with frost-grit function is to wheel mechanism | |
| CN101900148A (en) | Short-stroke pressure-maintaining high-pressure heavy hydraulic cylinder with high-pressure proximity switches | |
| CN112173994A (en) | Control valve unit, hydraulic control loop and engineering equipment with telescopic crane boom | |
| JPH02171380A (en) | Safety brake for kinematic member | |
| CN104354690B (en) | Pressure control device of brake cylinder of rail vehicle and control method of pressure control device | |
| CN211543506U (en) | Air-controlled pressure reducing valve for maglev train | |
| CN206569953U (en) | Pneumoelectric dual control anti-collision pulleying valve | |
| CN105584950B (en) | One kind keeps permanent interval work secure, integral brake cylinder automatically | |
| CN220850500U (en) | Quick braking device of mining monorail crane | |
| US4799355A (en) | Brake actuation systems for vehicles | |
| CN109080658B (en) | Brake apparatus and aerial suspension hanger rail train | |
| CN204956516U (en) | One -way retarder that resets slowly of high load capacity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |