A cam power-off device for a switch machine and a switch machine

Abstract

The application discloses a kind of cam power-off devices and switch machines for switch machine, the operating lever (5) left and right ends of device are separately installed in the mounting hole of left support plate (1) and right support plate (2);The end of the operating lever (5) extending left support plate (1) is installed baffle (4);Right support plate (2) outside installs displacement contactor (8);The end of the operating lever (5) extending right support plate (2) is installed cylindrical contact cam (3);Operating lever (5) rotation drives baffle (4) to rotate to shield or expose motor output shaft (100);At the same time, drive cylindrical contact cam (3) to rotate, lift or release contact (81);Pass through displacement contactor (8) control switch machine on-off power supply.Restore switch machine process operation is simple, and it is beneficial to single person operation;With independent recovery interface, there is no electric shock safety risk;Simple structure, all functional pieces are on the same rotation shaft, and system reliability is high.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of mechanical structure, especially to the technical field of railway mechanical equipment, and particularly to a cam power-off device for a switch machine. BACKGROUND

[0002] An electric switch machine is used in railway switch conversion equipment. The electric switch machine is used to convert and lock a point rail / center rail, change the opening direction of a switch, and reflect the position state of the point rail / center rail through a contact point. The electric switch machine needs to be manually converted under maintenance or other special conditions. To ensure safety, the manual switch conversion needs to meet the following conditions:

[0003] (1) disconnect the AC 380V power supply / DC 160V power supply;

[0004] (2) remove the motor output shaft baffle; the hand crank mechanism is not allowed to be used under the power-on state of the switch machine. The current solution in the railway industry is to use a baffle to physically block the motor and the hand crank handle.

[0005] (3) Since the electric and track maintenance personnel in the railway industry operate separately, the power-off needs to be realized without opening the machine cover, and the power-off needs to be restored under the condition of opening the machine cover.

[0006] Therefore, a power-off module needs to be provided on the switch machine to control the power-on and power-off of the switch machine through a shift contactor to realize the above three conditions. The existing manual switch can realize the above functions, but when the power-off is restored, the power-off needs to be restored manually by pulling the pull buckle structure. The structure is close to the power-off module, and there is a risk of accidental contact between the hand and the power-off module when the power-off is restored, and the operation is complicated and not conducive to operation.

[0007] As shown in Figs. 2 and 3, the existing power-off device is a swing lever structure, as shown in the figure, which has two working states: Figure 1 State one, the connecting plate 109 is in a vertical state, blocking the motor output shaft 100; at this time, the motor output shaft 100 cannot be operated by the hand crank to manually convert the switch machine; the safety contacts of the contactor are in a closed state, and the switch machine is in a power-on state.

[0008] State two, the connecting plate 109 is turned to the left by a certain angle, exposing the motor output shaft 100; at this time, the motor output shaft 100 can be operated by the hand crank to manually convert the switch machine; the safety contacts of the contactor are in an open state, and the switch machine circuit is in a power-off state.

[0009]

[0010] ​State one to state two: the manual lever 107 is installed on the casing through the first gasket pipe 112 and the middle nut gasket, the manual lever 107 is located outside the casing, the manual lever 107 is rotated in the counterclockwise direction, the movable plug holder 101 is rotated, the movable plug 115 is also rotated, when reaching a certain angle, the movable plug 115 makes the movable contact group of the safety switch of the contactor out of the static contact group, the switch machine enters the off state; at the same time, the fixed plate 102 is rotated, the fixed plate 102 is connected with the swing lever 104 through the first joint 103, the swing lever 104 is connected with the connecting plate 109 through the second joint 106, the fixed plate 102 drives the connecting plate 109 to rotate in the counterclockwise direction through the swing lever 104, and the motor output shaft 100 is exposed; the second gasket pipe 112 is connected and installed on the connecting plate 109 through the screw pin 111, and the second gasket pipe 112 limits the axial position of the dial shaft 115. At the same time, the movable plug holder 101 drives the dial 105 to rotate, the dial 105 falls, the sharp end of the dial 105 is clamped into the dial shaft 115, and the dial shaft 115 is self-locked, so that the dial shaft 115 cannot be rotated, and the purpose of being unable to be restored outside the switch machine is achieved.

[0011] State two to state one: open the cover, lift the dial 105 with hand, and rotate the manual lever 107 in the clockwise direction at the same time, the movable plug holder 101 is rotated, the movable plug 115 is also rotated, when reaching a certain angle, the movable plug 115 makes the movable contact group of the safety switch of the contactor into the static contact group, and the switch machine enters the on state; at the same time, the swing lever 104 drives the connecting plate 109 to rotate in the clockwise direction, and the motor output shaft 100 is shielded. In the process, the dial 105 must be lifted by hand, and the sharp end of the dial 105 is separated from the dial shaft 115, otherwise the restoration process cannot be completed.

[0012] Disadvantages of the prior art

[0013] (1) During the restoration process, the dial 105 must be lifted by hand all the time, in the state that the manual lever 107 is close to the bottom shell of the switch machine, one person cannot even complete the operation, and multiple people are needed to cooperate to perform the operation. The operation space around the switch machine is small, and it is not conducive for multiple people to perform the operation.

[0014] (2) The dial 105 and the safety contact are basically in the same space, and there is a safety risk of accidental contact

[0015] (3) The connecting rod mechanism is used, and the structure is relatively complex. Summary of the application

[0016] The purpose of the present application is to provide a cam power-off device for a switch machine, which is applied to a switch machine, and has the advantages that the restoration process of the switch machine is simple to operate, is beneficial to single-person operation, has an independent restoration interface, has no safety risk of electric shock, has a simple structure, all functional parts are on the same rotating shaft, and the system has high reliability.

[0017] The technical scheme provided by the present application is as follows:

[0018] A cam power-off device for a switch machine, which controls the on-off power of the switch machine through a displacement contactor 8, comprises a left support plate 1, a right support plate 2, a shielding plate 4 and a control rod 5.

[0019] The left and right ends of the control rod 5 are respectively installed in the mounting holes of the left support plate 1 and the right support plate 2; the left support plate 1 and the right support plate 2 are fixed in the machine box of the switch machine.

[0020] One end of the control rod 5 extending out of the left support plate 1 is installed with the shielding plate 4.

[0021] The outer side of the right support plate 2 is installed with the displacement contactor 8.

[0022] One end of the control rod 5 extending out of the right support plate 2 is installed with a cylindrical contact cam 3; the control rod 5 rotates to drive the shielding plate 4 to rotate to shield or expose the motor output shaft 100; at the same time, the cylindrical contact cam 3 is driven to rotate to lift or release the contact 81 of the displacement contactor 8; the displacement contactor 8 controls the on-off power of the switch machine.

[0023] A limiting mechanism is arranged in the mounting hole of the control rod 5 extending out of the left support plate 1, which comprises a guide nail 6 and a cylindrical spiral compression spring 10.

[0024] The inner wall of the mounting hole of the left support plate 1 is provided with two limiting concave arc grooves 12 with different radial azimuth angles, the control rod 5 is provided with an axial key groove 52, the bottom of the axial key groove 52 is provided with a radial hole 51, the guide nail 6 is arranged in the axial key groove 52 in the axial direction, and the cylindrical spiral compression spring 10 is installed in the radial hole 51, so that the upper part of the guide nail 6 is partially inserted into one of the two limiting concave arc grooves 12 with different radial azimuth angles, the rotating position of the control rod 5 is limited, and the shielding plate 4 shields or exposes the motor output shaft 100.

[0025] A shielding plate partition pipe 7 is sleeved on the control rod 5 between the shielding plate 4 and the left support plate 1.

[0026] A switch machine comprises the above-mentioned cam power-off device for a switch machine.

[0027] As can be seen from the technical scheme provided by the present application, the cam power-off device for a switch machine provided by the present application is applied to the switch machine, the operation of restoring the switch machine is simple, and it is beneficial to single-person operation; the device has an independent restoration interface, and there is no safety risk of electric shock; the structure is simple, all functional parts are on the same rotating shaft, and the system has high reliability. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.

[0029] Figure 1 The main view structural diagram of the prior art power-off device for the turnout machine Figure 1 ;

[0030] Figure 2 The top view structural diagram of the prior art power-off device for the turnout machine Figure 2 ;

[0031] Figure 3 The A view structural diagram of Figure 2 ;

[0032] Figure 4 The structural diagram of the cam power-off device for the turnout machine provided by the embodiments of the present application

[0033] Figure 5 The B-B sectional view structural diagram of Figure 4 ;

[0034] Figure 6 The C-C sectional view structural diagram of Figure 4 ;

[0035] Figure 7 The structural diagram of the displacement contactor for the turnout machine provided by the embodiments of the present application Figure 1 ;

[0036] Figure 8 The structural diagram of the displacement contactor for the turnout machine provided by the embodiments of the present application Figure 2 ;

[0037] Figure 9 The main view structural diagram of the left support plate of the turnout machine provided by the embodiments of the present application

[0038] Figure 10 The left view structural diagram of the left support plate of the turnout machine provided by the embodiments of the present application

[0039] Figure 11 The top view structural diagram of the left support plate of the turnout machine provided by the embodiments of the present application

[0040] Figure 12 The main view structural diagram of the right support plate of the turnout machine provided by the embodiments of the present application

[0041] Figure 13The left view structural schematic diagram of the right support plate of the switch machine is provided for the embodiment of the present application;

[0042] Figure 14 The top view structural schematic diagram of the right support plate of the switch machine is provided for the embodiment of the present application;

[0043] Figure 15 The front view structural schematic diagram of the shielding plate of the switch machine is provided for the embodiment of the present application;

[0044] Figure 16 The right view structural schematic diagram of the shielding plate of the switch machine is provided for the embodiment of the present application;

[0045] Figure 17 The front view structural schematic diagram of the operating rod of the switch machine is provided for the embodiment of the present application;

[0046] Figure 18 The top view structural schematic diagram of the operating rod of the switch machine is provided for the embodiment of the present application;

[0047] Figure 19 The front view structural schematic diagram of the shielding plate partition pipe of the switch machine is provided for the embodiment of the present application;

[0048] Figure 20 The left view structural schematic diagram of the shielding plate partition pipe of the switch machine is provided for the embodiment of the present application. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0050] Firstly, the terms possibly used in the present text are explained as follows:

[0051] The term “and / or” means either of the two or both can be realized, for example, X and / or Y means three cases including “X” or “Y” or “X and Y”.

[0052] The terms “include”, “contain”, “have”, “possess” or other similar semantic descriptions should be interpreted as non-exclusive inclusion. For example: including a technical feature element (such as raw materials, components, ingredients, carriers, dosage forms, materials, sizes, parts, components, mechanisms, devices, steps, processes, methods, reaction conditions, processing conditions, parameters, algorithms, signals, data, products or articles, etc.) should be interpreted as not only including the explicitly listed technical feature element, but also including other technical feature elements not explicitly listed but known in the art.

[0053] The term "consisting of' shall mean excluding any element, ingredient, component, or step not specified. If the term "consisting of' is used in the context of a process, then the process must exclusively include the steps specified. If the term "consisting of' is used in the context of a composition, then the composition exclusively includes the ingredients specified. If the term "consisting of' is used in the context of a product, then the product must exclusively include the features specified. If the term "consisting of' is used in the context of a subpart of a claim, then the subpart must exclusively include the features specified. If the term "consisting of' is used in the context of a clause of a claim, then the clause must exclusively include the elements specified. If the term "consisting of' is used in the context of a dependent claim, then the dependent claim must exclusively include the features specified.

[0054] The term "mass parts" is used to express the mass ratio relationship between components, for example: if it is described that X component is x mass parts and Y component is y mass parts, it means that the mass ratio of X component to Y component is x:y; 1 mass part can represent any mass, for example: 1 mass part can represent 1 kg or 3.1415926 kg, etc. The sum of the mass parts of all components does not necessarily equal 100 parts, and can be greater than, less than, or equal to 100 parts. Unless otherwise specified, the parts, proportions, and percentages described herein are by mass.

[0055] Unless specifically defined otherwise, the terms "mounting", "connected", "connecting", "fixed", and like terms are to be construed in a broad sense, for example: can be fixedly connected, or detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or can be connected in communication between two elements. Those skilled in the art can understand the specific meaning of the above terms in the context of the present application according to the specific circumstances.

[0056] When a concentration, temperature, pressure, size, or other parameter is expressed as a numerical range, the numerical range should be understood to specifically disclose all ranges formed from any upper limit value, lower limit value, or preferred value within the numerical range, regardless of whether the range is explicitly recited; for example, if the numerical range "2-8" is recited, the numerical range should be interpreted to include ranges such as "2-7", "2-6", "5-7", "3-4 and 6-7", "3-5 and 7", "2 and 5-7", etc. Unless otherwise specified, numerical ranges recited herein include all integers and fractions within the range.

[0057] The terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of description, and do not mean that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting herein.

[0058] The embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0059] As shown in Figure 4 A cam power-off device for a switch machine, which controls the on-off power of the switch machine through the displacement of a contactor 8, comprises a left support plate 1, a right support plate 2, a shielding plate 4 and a control rod 5. The left and right ends of the control rod 5 are respectively installed in the mounting holes of the left support plate 1 and the right support plate 2. The specific installation method is the general shaft and hole installation method, which meets the requirement that the control rod 5 can rotate freely. The left support plate 1 and the right support plate 2 are fixed in the case of the switch machine. The specific method is to use screws, flat washers and spring washers, which are all known technologies and will not be described in detail.

[0060] As shown in Figure 5 The end of the control rod 5 extending out of the left support plate 1 is installed with the shielding plate 4. The shielding plate 4 and the control rod 5 are installed through the first flat key 9, and the outer end is fixed through a nut. In this example, the control rod 5 between the shielding plate 4 and the left support plate 1 is sleeved with a shielding plate spacer 7. The shielding plate spacer 7 is arranged outside the left support plate 1, and the inner end surface is in contact with the outer side of the left support plate 1 to limit the rightward movement of the control rod 5. The outer end of the shielding plate spacer 7 is in contact with the shielding plate 4 to position the shielding plate 4, and the inner hole is also provided with a key groove to prevent the first flat key 9 from falling off during installation.

[0061] The control lever 5 rotates to drive the shielding plate 4 to rotate, either shielding or exposing the motor output shaft 100. In order to ensure that the position of the shielding plate 4 accurately shields or exposes the motor output shaft 100, in this example, the control lever 5 is provided with a limiting mechanism in the mounting hole of the left support plate 1. The limiting mechanism includes a guide pin 6 and a cylindrical spiral compression spring 10. The inner wall of the mounting hole of the left support plate 1 is provided with two limiting concave arc grooves 12 with different radial azimuth angles. The azimuth angle can be determined by the direction in which the motor output shaft 100 is shielded or exposed. The control lever 5 has a radial hole 51 and an axial keyway 52. ​​The bottom of the axial keyway 52 has a radial hole 51. The guide pin 6 is a cylindrical pin. The guide pin 6 is axially positioned in the axial keyway 52. ​​The cylindrical spiral compression spring 10 is installed in the radial hole 51. The upper part of the cylindrical guide pin 6 is pushed into one of the two limiting concave arc grooves 12 with different radial azimuth angles to limit the rotation position of the control lever 5 and control the shielding plate 4 to shield or expose the motor output shaft 100.

[0062] In this example, as Figure 5 As shown, the joystick 5 has only two end positions and will not appear in other positions, and it has a certain degree of vibration resistance in both positions.

[0063] The limiting mechanism in this example is a preferred embodiment. Other structures that can limit the lever 5 to two end positions are also within the scope of protection of this patent.

[0064] Additionally, the left end of the operating lever 5 is square, which is used for the hand crank interface.

[0065] In this example, the displacement contactor 8 is installed on the outer side of the right support plate 2; specifically, it is installed using three sets of screws, flat washers, and spring washers, all of which are well-known technologies and will not be described in detail here.

[0066] like Figure 6 As shown, in this example, the end of the control lever 5 extending out of the right support plate 2 is equipped with a cylindrical contact cam 3; the inner end face of the cylindrical contact cam 3 contacts the outer side of the right support plate 2, restricting the control lever 5 from moving to the left. The right end is installed by a nut, a flat washer and a spring washer, all of which are known technologies and will not be described in detail.

[0067] At the same time, the rotation of the control lever 5 drives the cylindrical contact cam 3 to rotate, lifting or releasing the contact 81 of the shift contactor 8; the shift contactor 8 controls the power supply of the switch machine.

[0068] The cross-sectional shape of the cylindrical contact cam 3 can be designed and modified by those skilled in the art to achieve the function of this example, and all such modifications are within the scope of protection of this patent.

[0069] In this example, the shift contactor 8 is a known device, commonly available for purchase. A common structure can be found here.Figure 7 With 8 As shown in the figure, the contact 81 is set in the adjusting cylinder 82, which is installed on the displacement contactor shell through the flat nut 83. The contact 81 moves into the displacement contactor shell under the action of the cylindrical contact cam 3, and the contact spring 85 is lifted by the ejector pin 84. The silver contact 86 on the contact spring 85 is disconnected with the silver contact 86 on the contact plate 87, and the switch machine is turned off.

[0070] The cylindrical contact cam 3 is separated from the contact 81, and the contact 81 is reset under the action of the reset spring 88. The ejector pin 84 pushes the top force, the contact spring 85 is reset, and the two silver contacts 86 are in contact. The switch machine is turned on.

[0071] Figures 9 to 20 The part drawing of several main parts is not described again.

[0072] In addition, the example also includes a switch machine, which is applied to the above-mentioned cam power-off device for switch machine.

[0073] Working principle:

[0074] Two states are described

[0075] State one:

[0076] (1) Reference Figure 5 Two positions, the shielding plate 4 is in the vertical state, blocking the motor output shaft 100, and cannot pass through the hand crank connected to the motor output shaft 100 to manually convert the switch machine;

[0077] (2) The displacement contactor 8 is in the closed state, and the switch machine is in the on state at this time.

[0078] State two:

[0079] (1) Reference Figure 5 Two positions, the shielding plate 4 rotates to the left by a certain angle, exposing the motor output shaft 100, which can be connected to the motor output shaft 100 through the hand crank to manually convert the switch machine;

[0080] (2) The displacement contactor 8 is in the open state, and the switch machine circuit is in the open state at this time.

[0081] State one to state two: use the hand crank to connect the operating rod 5, refer to Figure 6When the direction is counterclockwise, the operating lever 5 is rotated, the cylindrical contact cam 3 is rotated, the contact 81 of the displacement contactor 8 is lifted, the circuit between the displacement contactors 8 is disconnected, and the switcher enters the off state; meanwhile, the shielding plate 4 coaxial with the cylindrical contact cam 3 is also rotated in the counterclockwise direction, and the motor output shaft 100 is exposed, at which time, the whole machine can be manually converted through the hand crank connected switcher; since the displacement contactor 8 has the characteristics of not being manually restored after being disconnected and not being automatically restored after being disconnected, the purpose of not being able to restore the power failure without opening the cover is finally achieved.

[0082] State two is converted to state one: the cover is opened, and the reference Figure 6 direction, the operating lever 5 is rotated clockwise, the cylindrical contact cam 3 is lifted, the displacement contactor 8 is manually pressed to restore the switch 89, and the switcher restores the power supply; meanwhile, the shielding plate 4 returns to the original position and blocks the motor output shaft 100.

[0083] It can be seen that the present patent has the following beneficial effects:

[0084] 1. The recovery process is simple to operate - restoring the switcher circuit function is relatively independent of ending the hand crank function, and logically, the hand crank function is ended first, and then the switcher circuit is restored, which can meet the actual use requirements.

[0085] 2. The recovery button is above the switcher after the cover is opened, and can be separated from the circuit by an insulating pad 810, which ensures the safety of the operator and completely eliminates the risk of electric shock.

[0086] 3. The structure is simple, all functions are concentrated on one rotating shaft operating lever 5, and a hand crank interface is reserved, which increases the conversion arm and reduces the operating strength.

[0087] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any changes or replacements within the technical range disclosed by the present application can be easily thought by those skilled in the art, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A cam de-energizing device for a switch machine for controlling the on-off of the switch machine through the displacement of a contactor (8), characterized in that, It comprises a left support plate (1), a right support plate (2), a shielding plate (4) and a control lever (5). The left and right ends of the control lever (5) are respectively installed in the mounting holes of the left support plate (1) and the right support plate (2); the left support plate (1) and the right support plate (2) are fixed in the case of the switch machine. One end of the control lever (5) extending out of the left support plate (1) is installed with the shielding plate (4); the left end of the control lever (5) is provided with an interface for installing a hand crank. The right support plate (2) is installed with a displacement contactor (8) outside. One end of the control lever (5) extending out of the right support plate (2) is installed with a cylindrical contact cam (3); the control lever (5) rotates to drive the shielding plate (4) to shield or expose the motor output shaft (100); at the same time, the cylindrical contact cam (3) is driven to rotate to lift or release the contact (81) of the displacement contactor (8); the displacement contactor (8) controls the on-off of the switch machine.

2. The cam de-energizing device for a switch machine according to claim 1, wherein, The mounting hole of the control lever (5) extending out of the left support plate (1) is provided with a limiting mechanism, which comprises a guide pin (6) and a cylindrical spiral compression spring (10). The inner wall of the mounting hole of the left support plate (1) is provided with two limiting concave arc grooves (12) with different radial azimuth angles; the control lever (5) is provided with an axial key groove (52), the bottom of the axial key groove (52) is provided with a radial hole (51), the guide pin (6) is arranged in the axial key groove (52) in the axial direction, and the cylindrical spiral compression spring (10) is installed in the radial hole (51), the upper part of the guide pin (6) is partially inserted into one of the two limiting concave arc grooves (12) with different radial azimuth angles, the rotating position of the control lever (5) is limited, and the shielding plate (4) shields or exposes the motor output shaft (100).

3. The cam de-energizing device for a switch machine according to either of claims 1 or 2, wherein, The shielding plate (4) is sleeved with a shielding plate spacer (7) on the control lever (5) between the left support plate (1).

4. A switch machine characterized by, It comprises the cam power-off device for the switch machine according to claim 1, 2 or 3.

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