Auxiliary detection device and detection method for friction conversion force of switch machine

Abstract

The invention discloses an auxiliary detection device and method for the friction conversion force of a point switch. The auxiliary detection device for the friction conversion force of the point switch comprises a force measuring module and a driving module. The driving module is in linkage connection with a hand-cranking short handle on an original motor speed reducer of the switch machine through the force measuring module and is used for driving the hand-cranking short handle to execute rotation operation through the force measuring module; and the force measuring module is used for detecting the torque output by the driving module. The auxiliary detection device and the detection method for the friction conversion force of the point switch are scientific in design, can accurately and reliably enable a worker to further obtain the friction conversion force of the point switch based on the measurement data of the auxiliary detection device, and have great practical significance.

Description

Technical Field

[0001] This invention relates to the field of rail transit technology, and in particular to an auxiliary detection device and method for detecting the friction conversion force of a switch machine. Background Technology

[0002] A switch machine is an important signaling infrastructure used to reliably change the position of a turnout, change the direction of the turnout, lock the turnout switch rail, and reflect the position of the turnout. It can effectively ensure traffic safety, improve transportation efficiency, and reduce the labor intensity of traffic operators.

[0003] The motor in a switch machine is a key component. Overload protection of the switch machine is achieved by the friction coupling. When the switch machine is working normally, the friction coupling is equivalent to a gear, working with the reducer to transmit the torque output by the motor. However, when the load is too large or when there is resistance during turnout switching, and the resistance exceeds the force value set by the friction coupling, the friction coupling starts to work, allowing the motor and reducer to idle, thereby protecting the motor and the entire switch machine from damage.

[0004] The friction conversion force of the friction coupling varies depending on the rated conversion force of the switch machine. Abnormal friction conversion force will lead to malfunctions in the switch machine. Therefore, the detection of the friction conversion force of the switch machine is quite important.

[0005] It should be noted that the friction conversion force of the switch machine is the force value output by the friction connector of the switch machine. If the force value is too small, the switch machine will not be able to pull the turnout; if the force value is too large, it will cause the switch machine to lock or rebound and lose the indication signal.

[0006] Therefore, there is an urgent need to develop a technology that can solve the above-mentioned technical problems. Summary of the Invention

[0007] The purpose of this invention is to address the technical deficiencies of existing technologies by providing an auxiliary detection device for the friction conversion force of a switch machine.

[0008] To this end, the present invention provides an auxiliary detection device for the friction conversion force of a switch machine, comprising a force measuring module and a drive module; The drive module is linked to the hand crank handle on the original motor reducer of the switch machine through the force measuring module. It is used to drive the hand crank handle to perform rotation operation through the force measuring module. The force measurement module is used to detect the magnitude of the torque output by the drive module.

[0009] As can be seen from the technical solution provided by the present invention above, compared with the prior art, the present invention provides an auxiliary detection device and detection method for the friction conversion force of a switch machine. The design is scientific. Based on the measurement data of the auxiliary detection device, the staff can accurately and reliably obtain the friction conversion force of the switch machine, which has great practical significance. Attached Figure Description

[0010] Figure 1 This is a front view of the force measuring module in an auxiliary detection device for the friction conversion force of a switch machine provided by the present invention; Figure 2 This is a top view (internal) of the force measuring module. Figure 3 This is the left view of the force measuring module; Figure 4 This is the right view of the force measuring module; Figure 5 A front view of the electric crank handle in an auxiliary detection device for friction conversion force of a switch machine provided by the present invention; Figure 6 Top view (interior) of the electric crank handle; Figure 7 Left view of the electric crank handle; Figure 8 A schematic diagram of the hand crank of a switch machine friction conversion force detection device provided by the present invention; Figure 9 This invention uses an electric crank handle and a force measuring module to measure the friction conversion force of a switch machine. Figure 10 This invention uses a manual crank handle and a force measuring module to measure the frictional conversion force of a switch machine. Figure 11 This is a schematic diagram of the communication signal transmission of the force measurement module; Figure 12 A schematic diagram of the power supply transmission for the force measuring module; Figure 13 A schematic diagram of communication signal transmission for an electric crank handle; Figure 14 A schematic diagram of power transmission for an electric crank handle; Figure 15 This is a schematic diagram showing the position of the hand-cranked short shaft on the original motor reducer of the switch machine. In the diagram, 1 represents the force measuring module; 101 is the first rotary female connector, 102 is the first bearing seat, 103 is the first outer shell, 1031 is the first outer shell support, 1032 is the first stud, 104 is the first transparent panel, and 105 is the first button membrane; 106 is the second bearing housing, 107 is the rotating shaft, 1071 is the rotary male connector, 108 is the first fastener, 109 is the static torque sensor, and 1091 is the static torque sensor socket; 110 is the second fastener, 111 is the conductive slip ring, 1111 is the conductive slip ring housing lead wire, 1112 is the conductive slip ring shaft lead wire, 1113 is the conductive slip ring shaft lead plug, 1114 is the conductive slip ring housing, and 1115 is the conductive slip ring shaft. 112 is the third fastener, 113 is the processing board, 1131 is the display screen, 1132 is the keypad, 1133 is the first power supply and communication interface, 1134 is the first battery, and 1135 is the processing unit; 1136 is the first communication unit, 1137 is the first power supply management unit, 114 is the fourth fastener, 115 is the fifth fastener, 116 is the sixth fastener, 117 is the seventh fastener, and 118 is the positioning pin. 2 is an electric crank handle; 201 is the second rotary female connector, 2011 is the shaft of the second rotary female connector, and 202 is the third bearing housing; 203 is the second outer shell, 2031 is the second outer shell support, 2032 is the second stud, 204 is the second transparent panel, and 205 is the second button membrane; 206 is the coupling, 207 is the motor, 2071 is the motor shaft, 208 is the eighth fastener, and 209 is the control board; 091 is the second display screen, 2092 is the second keypad, 2093 is the second power supply and communication interface, 2094 is the control unit, 2095 is the drive unit, 2096 is the second communication unit, and 2097 is the second power supply management unit; 210 is the ninth fastener, 211 is the tenth fastener, 212 is the positioning hole, and 213 is the second battery.

[0011] 3 is a hand crank; 301 is the third rotary female connector 301, and 302 is the handle. Detailed Implementation

[0012] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0013] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0014] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0015] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0016] The technical solution of the present invention will be further described below through specific embodiments. Details not specified in the embodiments are all conventional technologies in the industry.

[0017] See Figures 1 to 15 The present invention provides an auxiliary detection device for the friction conversion force of a switch machine, which is applied to a switch machine. The device includes a force measuring module 1 and a drive module. The drive module is connected in series with the hand crank handle 4 on the original motor reducer of the switch machine through the force measuring module 1. It is used to drive the hand crank handle 4 to perform rotation operation through the force measuring module 1. Force measuring module 1 is used to detect the magnitude of the torque output by the drive module.

[0018] In this invention, specifically, the auxiliary detection device for the friction conversion force of the switch machine provided by this invention is matched with an existing, traditional, and widely used switch machine, such as the ZDJ9 model switch machine produced by Tianjin Railway Signal Co., Ltd.

[0019] In this invention, specifically, the driving module is connected to the rotating male connector 1071 in the force measuring module 1, and is used to drive the rotating male connector 1071 in the force measuring module 1 to rotate. In this invention, specifically, the drive module includes an electric crank handle 2 and / or a hand crank handle 3; When the drive module is an electric crank handle 2, the positioning pin 118 in the force measuring module 1 is inserted into the positioning hole 212 of the electric crank handle 2, and the rotating male connector 1071 on the force measuring module 1 is inserted into the second rotating female connector 201 of the electric crank handle 2. At this time, it is combined to form a friction conversion force auxiliary detection device. When the drive module is a hand crank 3, the rotating male connector 1071 of the force measuring module 1 is inserted into the third rotating female connector 301 of the hand crank 3.

[0020] In this invention, see Figures 1 to 4 Force measuring module 1 includes: a hollow first outer shell 103; A static torque sensor 109 is provided in the inner cavity of the first outer casing 103; The first bearing housing 102 and the second bearing housing 106 are respectively provided on the left and right sides of the first housing 103. The inner ring of the bearing installed on the first bearing housing 102 is inserted horizontally through the first rotary female connector 101 from left to right. The right end of the first rotary female connector 101 is fixedly connected to the left side of the static torque sensor 109; A horizontally distributed rotating shaft 107 is inserted horizontally through the inner ring of the bearing mounted on the second bearing housing 106 from right to left. A rotating male connector 1071 is provided at the right end of the rotating shaft 107; The left end of the rotating shaft 107 (which has a mounting base on its left end) is fixedly connected to the right side of the static torque sensor 109; In specific implementation, a conductive slip ring 111 is fixedly provided on the outer circumferential side of the rotating shaft 107; The conductive slip ring 111 has a conductive slip ring shaft lead-out plug 1113, which is plugged into the static torque sensor socket 1091 on the static torque sensor 109.

[0021] For specific implementation details, see [link / reference] Figure 3 As shown, the first bearing housing 102 is fixed to the threaded hole reserved on the left side of the first housing 103 by a plurality of (e.g., four) sixth fasteners 116 (i.e. fastening screws); In practice, the first rotary female connector 101 is fixed to the threaded hole reserved on the left side of the static torque sensor 109 by a plurality of (e.g., four) first fasteners 108 (i.e. fastening screws).

[0022] It should be noted that the first rotary female connector 101 is inserted into the first bearing housing 102, and the first rotary female connector 101 is fixed to the threaded hole reserved in the static torque sensor 109 using the first fastener 108 (i.e., fastening screw). In practice, the rotating shaft 107 (with a mounting base at its left end) is fixed to the threaded hole reserved on the right side of the static torque sensor 109 by a plurality of (e.g., four) second fasteners 110 (i.e. fastening screws). In practice, the conductive slip ring 111 is connected to the rotating shaft 107 through multiple third fasteners 112 (i.e., fastening screws).

[0023] It should be noted that the rotating shaft 107 is sequentially inserted into the conductive slip ring 111 and the second bearing seat 106, and the conductive slip ring 111 is fixed to the rotating shaft 107 using the third fastener 112 (i.e., the fastening screw). Then, the conductive slip ring shaft lead-out plug 1113 on the conductive slip ring 111 is inserted into the static torque sensor socket 1091. The conductive slip ring shaft lead-out wire 112 extending from the conductive slip ring shaft 1115 of the conductive slip ring 111 is connected to the conductive slip ring shaft lead-out plug 1113.

[0024] In specific implementation, a first housing support 1031 is provided inside the first housing 103; The first housing bracket 1031 is fixedly connected to the fifth fastener 115 (i.e., fastening screw) and the conductive slip ring housing 1114 of the conductive slip ring 111. In practice, the second bearing housing 106 is fixed to the threaded hole reserved on the right side of the first housing 103 by a plurality of (e.g., four) seventh fasteners 117 (i.e. fastening screws); In a specific implementation, two positioning pins 118 are provided on the rear right side of the first outer shell 103, spaced vertically and distributed horizontally.

[0025] In a specific implementation, the conductive slip ring housing lead 1111 on the conductive slip ring housing 1114 of the conductive slip ring 111 is connected to a processing board 113; The processing plate 113 is connected to the first stud 1032 provided on the housing bracket 1031 using the fourth fastener 114 (i.e., fastening screw).

[0026] Furthermore, the processing board 113 includes a first display screen 1131, a first keypad 1132, a first power supply and communication interface 1133, a first battery 1134, a processing unit 1135, a first communication unit 1136, and a first power supply management unit 1137. The first outer casing 103 has an opening at a position corresponding to the first display screen 1131 of the processing board 113 (i.e., directly in front) where a first transparent panel 104 is installed. The first keypad 1132 is covered with a first key membrane 105; The first outer casing 103 has a first button film receiving opening at a position corresponding to the first button film 105, so that the first button film 105 can be exposed.

[0027] It should be noted that, in this invention, the first transparent panel 104 is attached to the outer casing 103, and the display content of the first display screen 1131 can be seen through the first transparent panel 104. The first key film 105 covers the first keypad 1132.

[0028] Furthermore, see Figure 12 For force measuring module 1, its power supply connection design is as follows: The first power supply management unit 1137 is electrically connected to the first battery 1134 and the first communication power supply interface 1133 respectively; The first communication power supply interface 1133 is electrically connected to an external power source.

[0029] It should be noted that the first battery 1134 is connected to the first power management unit 1137. When the first battery is not being charged, the first battery 1134 provides working power to the first power management unit 1137. When the battery needs to be charged, an external power source supplies power to the first power management unit 1137 through the first communication power interface 1113, and the first power management unit 1137 charges the first battery 1134.

[0030] The first power supply management unit 1137 is electrically connected to the first display screen 1131, the processing unit 1135 and the first communication unit 1136 respectively, and is used to supply power to the first display screen 1131, the processing unit 1135 and the first communication unit 1136. The first power supply management unit 1101 is electrically connected to the static torque sensor 109 through a conductive slip ring 111.

[0031] It should be noted that the first power supply management unit 1137 directly supplies power to the first display screen 1131, the processing unit 1135, and the first communication unit 1136, while the first power supply management unit 1101 supplies power to the static torque sensor 109 through the conductive slip ring 111.

[0032] Furthermore, see Figure 11 For force measuring module 1, its communication signal connection design is as follows: The first processing unit 1135 is connected to the first communication power supply interface 1133 via the first communication unit 1136, and is used to complete the transmission of information with external devices (such as computers). The processing unit 1135 is communicatively connected to the first display screen 1131 and is used to control the display content of the first display screen 1131; The processing unit 1135 is communicatively connected to the first keypad 1132 and is used to receive keyboard input signals; The processing unit 1135 is communicatively connected to the static torque sensor 109 via the conductive slip ring 111, and is used to receive the output signal (i.e. the output torque signal) of the static torque sensor 109.

[0033] It should be noted that the first display screen 1131, the first keypad 1132, the first power supply and communication interface 1133, the first battery 1134, the processing unit 1135, the first communication unit 1136, and the first power supply management unit 1137 are conventional electrical units that are technologically mature, widely used, and well-known. They can be traditional conventional electrical modules, and will not be described in detail here.

[0034] For example, the processing unit 1135 can be a programmable logic controller (PLC), a central processing unit (CPU), a digital signal processor (DSP), or a microcontroller (MCU) with signal control and data processing capabilities. These are conventional electrical units with mature existing technology, and will not be described in detail here.

[0035] In this invention, see Figures 5 to 7 Electric crank 2, including a hollow second outer shell 203; The inner cavity of the second housing 203 is provided with a coupling 206; A third bearing housing 202 is provided on the left side of the second housing 203; The inner ring of the bearing installed on the third bearing housing 202 is inserted horizontally through the second rotary female connector 201 from left to right; The right end of the second rotary female connector 201 is connected to the left end of the coupling 206 via the second rotary female connector shaft 2011. The right end of coupling 206 is connected to the left end of motor shaft 2071 of motor 207.

[0036] In a specific implementation, two positioning holes 212 with left openings are provided on the rear side of the second outer shell 2032; The two positioning holes 212 are spaced vertically and distributed horizontally; Two positioning holes 212 are used to be inserted into the two positioning pins 118 in the force measuring module 1.

[0037] It should be noted that the shape and size of the second outer shell 2032 correspond to and match the shape and size of the two positioning pins 118 in the force measuring module 1.

[0038] In practice, the third bearing housing 203 is fixed to the threaded hole reserved on the left side of the second housing 203 by multiple (e.g., four) tenth fasteners 211 (i.e. fastening screws); In specific implementation, a second outer shell support 2031 is provided inside the second outer shell 203; The motor 207 is fixed to the second housing bracket 2031 inside the second housing 203 by a plurality of eighth fasteners 208 (i.e. fastening screws); It should be noted that, in this invention, the third bearing housing 203 is mounted on the second housing 203 using the tenth fastener 211, the second rotary female connector 201 is inserted into the third bearing housing 203, the shaft 2011 of the second rotary female connector is connected to the coupling 206, the motor shaft 2071 is connected to the other end of the coupling 206, and the motor 207 is fixed to the second housing bracket 2031 using the eighth fastener 208. In practice, a control board 209 is provided inside the second outer shell 203; The control board 209 is connected to the second stud 2032 provided on the second housing bracket 2031 using the ninth fastener 210 (i.e., fastening screw); Furthermore, the control board 209 includes a second display screen 2091, a second keypad 2092, a second power supply and communication interface 2093, a control unit 2094, a drive unit 2095, a second communication unit 2096, and a second power supply management unit 2097; The second housing 203 has an opening for mounting a second transparent panel 204 at a position corresponding to the second display screen 2091 of the control panel 209 (i.e., directly in front); The second keypad 2092 is covered with a second key membrane 205; The second outer casing 203 has a second button film receiving opening at a position corresponding to the second button film 205, so that the second button film 205 can be exposed.

[0039] It should be noted that, in this invention, the second transparent panel 204 is pasted on the second housing 203, and the display content of the second display screen 2091 can be seen through the second transparent panel 204. The second key film 205 covers the second keypad 2092, and the second battery 213 is fixed to the second housing 203 with glue.

[0040] Furthermore, see Figure 14 For the electric crank handle 2, its power supply connection design is as follows: The second power supply management unit 2097 is electrically connected to the second communication power supply interface 2093 and the second battery 213 respectively; It should be noted that the second communication power supply interface 2093 is connected to the second power supply management unit 2097, and the second battery 213 is connected to the second power supply management unit 2097. When the second battery is not charging, the second battery 213 provides working power to the second power supply management unit 2097. When the battery needs to be charged, an external power source supplies power to the second power supply management unit 2097 through the second communication power supply interface 2093, and the second power supply management unit 2097 charges the second battery 213.

[0041] The second power supply management unit 2097 is electrically connected to the second display screen 2091, the control unit 2094, and the second communication unit 2096 respectively, and is used to supply power to the second display screen 2091, the control unit 2094, and the second communication unit 2096. The second power supply management unit 2091 supplies power to the motor 207 through the drive unit 2095.

[0042] It should be noted that the second power supply management unit 2097 directly supplies power to the second display screen 2091, the control unit 2094, and the second communication unit 2096, while the second power supply management unit 2091 supplies power to the motor 207 through the drive unit 2095.

[0043] Furthermore, see Figure 13 For the electric crank handle 2, its communication signal connection design is as follows: The control unit 2094 is connected to the communication power supply interface 2093 via the second communication unit 2096, and can complete the transmission of information with external devices (such as computers); The control unit 2094 is communicatively connected to the second display screen 2091 and is used to control the display content of the second display screen 2091; The control unit 2094 is connected to the second display keypad 2092 and is used to receive keypad input signals; The control unit 2094 is communicatively connected to the motor 207 via the drive unit 2095 and is used to control the rotation direction of the motor 207.

[0044] It should be noted that the second display screen 2091, the second keypad 2092, the second power supply and communication interface 2093, the control unit 2094, the drive unit 2095, the second communication unit 2096, and the second power supply management unit 2097 are all conventional electrical units that are technologically mature, widely used, and well-known. They can be traditional conventional electrical modules, and will not be described in detail here.

[0045] For example, the control unit can be a programmable logic controller (PLC), a central processing unit (CPU), a digital signal processor (DSP), or a microcontroller (MCU) with signal control and data processing capabilities. These are conventional electrical units with mature existing technology, and will not be elaborated further here.

[0046] In this invention, for specific implementation, see [link to relevant documentation]. Figure 8 As shown, the hand crank 3 includes a third rotary female connector 301 and a handle 302.

[0047] The third rotary female connector 301 is connected to the handle 302.

[0048] In the specific implementation of this invention, since the energy transfer of the device cannot be 100%, it is necessary to calibrate the device in advance to obtain the relationship between its torque and force.

[0049] The first rotary female connector 101 of the force measuring module 1 of the present invention is connected to the detection end of the standard force sensor, and multiple values ​​of its range are measured for calibration. The relationship between torque and force is obtained, and the relationship between force and torque between any two values ​​is considered to be linear.

[0050] It should be noted that, because the torque formula T = R·F·sin(θ), and since the rotational force is always in the tangential direction, θ = 0, therefore T = R·F. Since R is fixed, T and F have a linear relationship. Here, T represents torque, R represents lever arm, F represents the magnitude of the force, and θ represents the angle between the torque and the force.

[0051] The specific calibration method is as follows: Set the rotation torque value of the present invention via a button, so that the first rotating female connector 101 can rotate with a constant torque. Check the standard force sensor at this time to obtain the force value corresponding to the torque. Based on the relationship between force F and torque T, the following formula can be obtained: , formula (1); In formula (1), a x For a certain range of measurement coefficients, b x Let a be the offset value within a certain measurement range. When information from two measurement points is known, a can be obtained through a linear equation in two variables. x and b x .

[0052] It should be noted that, in the specific implementation, a scatter plot is drawn with the torque T (i.e., moment T) obtained from the force measuring module 1 through multiple (e.g., 10) calibration operations as the x-axis and the force value F obtained from the standard force sensor according to the calibration operations as the y-axis. By fitting this scatter plot, a quantitative relationship (i.e., a linear equation in two variables) between the torque T (i.e., moment T) and the force value F can be obtained, as follows: , formula (1); Where T is the torque (i.e., moment) obtained by force measuring module 1; F is the force value F obtained by the quasi-force sensor; a x and bx a is a constant. x Let b be the slope of the straight line connecting multiple points in the scatter plot. x The intersection of the line connecting multiple points in the scatter plot and the y-axis.

[0053] It should be noted that by plotting several sets of data of torque T and force F in a scatter plot (e.g. in Excel), and then performing linear fitting through trend analysis, the above fitting relationship (i.e., a linear equation in two variables) can be obtained, namely formula (1).

[0054] It should be noted that formula (1) is a fitting formula. Theoretically, the torque formula is T = R·F·sin(θ). Since the rotational force is always in the tangential direction, θ = 0, so T = R·F, that is, F = (1 / R)·T. Where T represents torque, R represents lever arm, F represents the magnitude of force, and θ represents the angle between torque and force. Because there is always an error in fitting, there is a b in formula (1). x .

[0055] Furthermore, the output of the torque sensor (i.e., the static torque sensor 109) is an analog voltage A, which has a linear relationship with the torque T. Therefore, the following relationship can be obtained: , formula (2); In formula (2), k is the relationship coefficient between analog quantity A and torque T. When the torque sensor is determined, the coefficient k is determined and is a constant.

[0056] Furthermore, the analog voltage A output by the torque sensor (i.e., the static torque sensor 109) is converted into a digital quantity D by a chip with AD conversion (analog-to-digital conversion) function (i.e., a conventional analog-to-digital converter chip; the processing module 1135 may also have analog-to-digital conversion function) in the force measurement module 1. When the chip is determined, the conversion coefficient j between the analog and digital quantities is also determined. Therefore, the formula can be derived: , formula (3); Substituting formulas (3) and (2) into formula (1), we get: , formula (4); In formula (4), force F is the magnitude of the torsional force on the torque sensor (i.e., static torque sensor 109); D is the magnitude of the torque value (digital quantity) obtained from the torque sensor (i.e., static torque sensor 109).

[0057] Based on the auxiliary detection device for monitoring the accuracy of a notch camera provided by the present invention, the present invention also provides a method for detecting the friction conversion force of a switch machine using an auxiliary detection device for the friction conversion force of a switch machine, which includes the following steps: Step S1: Connect the force measuring module 1 to the drive module; In specific implementation, step S1 is as follows: insert the positioning pin 118 of the force measuring module 1 into the positioning hole 212 of the electric crank handle 2, and insert the rotating male connector 1071 on the force measuring module 1 into the second rotating female connector 201 of the electric crank handle 2 to form a friction conversion force auxiliary detection device. or, Step S1 specifically involves inserting the rotating male connector 1071 of the force measuring module 1 into the third rotating female connector 301 of the hand crank 3 to form a friction conversion force auxiliary detection device.

[0058] Step S2: Fit the first rotary female connector 101 of the force measuring module 1 onto the hand-cranked short shaft 4 of the original motor reducer of the switch machine; It should be noted that the hand-cranked short shaft 4 of the original motor reducer of the switch machine is an exposed square column; the hand-cranked short shaft 4 is inserted into the limiting groove with the left opening of the first rotary female connector 101 of the force measuring module 1.

[0059] Step S3: The drive module drives the rotating male connector 1071 and the first rotating female connector 101 of the force measuring module 1 to rotate, and finally drives the hand-cranked short shaft 4 of the switch machine to rotate. In specific implementation, step S3 is as follows: use electric crank 2 to control the rotation of motor 207, thereby driving the rotation of the male connector 1071 and the first rotation female connector 101 of force measuring module 1 to rotate, and finally driving the hand-cranked short shaft 4 of the original motor reducer of the switch machine to rotate. Alternatively, step S3 specifically involves: cranking the handle 302 of the hand crank 3 to drive the rotating male connector 1071 and the first rotating female connector 101 of the force measuring module 1 to rotate, thereby driving the hand crank short shaft 4 of the original motor reducer of the switch machine to rotate. It should be noted that in this invention, the original hand-cranked short shaft 4 of the switch machine is used to manually change the fixed and reverse positions of the switch machine. By rotating the hand-cranked short shaft, the indicator rod or locking rod extends or retracts, so that the switch machine becomes a fixed, reverse, or four-open position.

[0060] The torque applied to the original hand-cranked short shaft 4 of the switch machine is transmitted to the hand-cranked gear in the motor reducer. Through the hand-cranked gear of the reducer, the motor reducer will continue to transmit the torque to the friction coupling. The motor reducer and the friction coupling transmit the torque through gear meshing.

[0061] Step S4: Based on the torque obtained by the force measuring module 1 and the preset torsional force calculation formula, the magnitude of the torsional force on the static torque sensor 109 in the force measuring module 1 is obtained, that is, the frictional conversion force on the original motor on the switch machine is obtained. In step S4, the preset formula for calculating the torsional force is as follows: , formula (4); In formula (4), force F is the magnitude of the torsional force on the torque sensor (i.e., static torque sensor 109); D is the magnitude of the torque value (digital quantity) obtained from the torque sensor (i.e., static torque sensor 109). k is the relationship coefficient between the analog quantity A and the torque T inherent in the static torque sensor 109, and it is a constant. j is the analog-to-digital conversion coefficient of the analog-to-digital conversion chip itself, which is used to convert the analog voltage A output by the static torque sensor 109 into analog and digital quantities. It is a constant. It should be noted that the torsional force on the static torque sensor 109 is equal to the frictional force converted from the original motor on the switch machine. The frictional force converted from the switch machine is the force value output by the switch machine friction connector.

[0062] It should be noted that the static torque sensor 109 is used to detect the magnitude of the torque output by the drive module (electric crank 2 or hand crank 3) to the hand crank short shaft 4 of the original motor reducer of the switch machine through the force measuring module 1. The torque applied to the hand crank short shaft 4 is transmitted to the friction coupling through the hand crank gear of the original motor reducer of the switch machine. The original motor reducer of the switch machine transmits the torque to the original friction coupling of the switch machine, and then the friction coupling of the switch machine outputs a force value outward (e.g., to the turnout), that is, outputs the friction conversion force of the switch machine.

[0063] In practice, the staff can calculate the magnitude of the torsional force on the static torque sensor 109 in the force measuring module 1 based on the torque obtained by the force measuring module and the preset torsional force calculation formula, i.e., formula (4).

[0064] In a specific implementation, the processing unit 1135 on the force measuring module 1 can also execute the above-mentioned step S4. That is, the processing unit 1135 is connected to the static torque sensor 109 for communication. It is used to calculate the magnitude of the torsional force on the static torque sensor 109 in the force measuring module 1 based on the torque obtained by the static torque sensor 109 (the processing unit can convert the analog torque signal output by the static torque sensor 109 into a digital signal, that is, into a torque value) and the preset torsional force calculation formula. That is, it can obtain the frictional conversion force on the original motor on the switch machine. Thus, the frictional conversion force on the motor on the switch machine can be obtained by observing the data on the first display screen 1131 of the force measuring module 1.

[0065] It should be noted that, for this invention, when the first rotary female connector 101 is fitted onto the original hand-cranked short shaft 4 of the motor reducer of the switch machine (e.g., a ZDJ9 model switch machine manufactured by Tianjin Railway Signal Co., Ltd.), it fits tightly against the hand-cranked short shaft 4, and will not cause non-uniform rotation due to gaps; when the second rotary female connector 201 or the third rotary female connector 301 is fitted onto the rotary male connector 1071, it fits tightly against the rotary male connector 1071, and will not cause non-uniform rotation due to gaps; the real-time friction conversion force value can be displayed on the first display screen 1131 on the force measuring module 1, and the friction conversion force curve can be further displayed in the form of a curve graph for convenient use; in addition, for this invention, the measurement results can be output to an external device (such as a computer) through the first power supply and communication interface 1133 on the force measuring module 1.

[0066] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An auxiliary detection device for the friction conversion force of a switch machine, characterized in that, It includes a force measuring module (1) and a drive module; The drive module is connected to the hand crank (4) on the original motor reducer of the switch machine through the force measuring module (1) and is used to drive the hand crank (4) to perform rotation operation through the force measuring module (1); Force measuring module (1) is used to detect the magnitude of the torque output by the drive module; The force measuring module (1) includes a hollow first outer shell (103); A static torque sensor (109) is provided in the inner cavity of the first outer shell (103). Two positioning pins (118) are provided on the rear right side of the first outer shell (103) with vertical spacing and horizontal distribution.

2. The auxiliary detection device for the friction conversion force of a switch machine as described in claim 1, characterized in that, The drive module includes an electric crank (2) and / or a hand crank (3). When the drive module is an electric crank (2), the positioning pin (118) in the force measuring module (1) is inserted into the positioning hole (212) of the electric crank (2), and the rotating male connector (1071) on the force measuring module (1) is inserted into the second rotating female connector (201) of the electric crank (2); When the drive module is a hand crank (3), the rotating male connector (1071) of the force measuring module (1) is inserted into the third rotating female connector (301) of the hand crank (3).

3. The auxiliary detection device for the friction conversion force of a switch machine as described in claim 1, characterized in that, The first bearing housing (102) and the second bearing housing (106) are respectively provided on the left and right sides of the first outer shell (103). The inner ring of the bearing installed on the first bearing housing (102) is inserted horizontally through the first rotary female connector (101) from left to right. The right end of the first rotary female connector (101) is fixedly connected to the left side of the static torque sensor (109); A laterally distributed rotating shaft (107) is inserted horizontally through the inner ring of the bearing mounted on the second bearing housing (106) from right to left. A rotating male connector (1071) is provided at the right end of the rotating shaft (107). The left end of the rotating shaft (107) is fixedly connected to the right side of the static torque sensor (109).

4. The auxiliary detection device for the friction conversion force of a switch machine as described in claim 3, characterized in that, A conductive slip ring (111) is fixedly installed on the outer circumferential side of the rotating shaft (107). The conductive slip ring (111) has a conductive slip ring shaft lead-out plug (1113) which is connected to the static torque sensor socket (1091) on the static torque sensor (109).

5. The auxiliary detection device for the friction conversion force of a switch machine as described in claim 4, characterized in that, The first bearing housing (102) is fixed to the threaded hole reserved on the left side of the first housing (103) by a plurality of sixth fasteners (116); The first rotary female connector (101) is fixed to the threaded hole reserved on the left side of the static torque sensor (109) by a plurality of first fasteners (108); The rotating shaft (107) is fixed to the threaded hole reserved on the right side of the static torque sensor (109) by a plurality of second fasteners (110); The conductive slip ring (111) is connected to the rotating shaft (107) via multiple third fasteners (112).

6. The auxiliary detection device for the friction conversion force of a switch machine as described in claim 2, characterized in that, Electric crank (2), including a hollow second housing (203); The inner cavity of the second housing (203) is provided with a coupling (206). A third bearing housing (202) is provided on the left side of the second housing (203). The inner ring of the bearing installed on the third bearing housing (202) is inserted laterally from left to right into the second rotary female connector (201). The right end of the second rotary female connector (201) is connected to the left end of the coupling (206) via the second rotary female connector shaft (2011); The right end of the coupling (206) is connected to the left end of the motor shaft (2071) of a motor (207).

7. The auxiliary detection device for the friction conversion force of a switch machine as described in claim 6, characterized in that, The rear side of the second outer casing (2032) is provided with two positioning holes (212) that open to the left. The two positioning holes (212) are spaced vertically and distributed horizontally; Two positioning holes (212) are used to be inserted into the two positioning pins (118) in the force measuring module (1).

8. The auxiliary detection device for the friction conversion force of a switch machine as described in claim 2, characterized in that, The hand crank (3) includes a third rotary female connector (301) and a handle (302). The third rotary female connector (301) is connected to the handle (302).

9. A method for detecting the friction conversion force of a switch machine based on an auxiliary detection device for the friction conversion force of a switch machine as described in any one of claims 1 to 8, characterized in that, Includes the following steps: Step S1: Connect the force measuring module (1) to the drive module; Step S2: Place the first rotating female connector (101) of the force measuring module (1) onto the hand-cranked short shaft (4) of the original motor reducer of the switch machine; Step S3: Through the drive module, the rotating male connector (1071) and the first rotating female connector (101) of the force measuring module (1) are driven to rotate, and finally the hand-cranked short shaft (4) of the switch machine is driven to rotate. Step S4: Based on the torque obtained by the force measuring module 1 and the preset torsional force calculation formula, the magnitude of the torsional force received by the static torque sensor (109) in the force measuring module (1) is obtained, that is, the frictional conversion force received by the original motor on the switch machine is obtained.

10. The method for detecting the friction conversion force of a switch machine as described in claim 9, characterized in that, Step S1 is as follows: insert the positioning pin (118) of the force measuring module 1 into the positioning hole (212) of the electric crank handle (2), and insert the rotating male connector (1071) on the force measuring module (1) into the second rotating female connector (201) of the electric crank handle (2); Alternatively, step S1 specifically involves inserting the rotating male connector (1071) of the force measuring module (1) into the third rotating female connector (301) of the hand crank (3); Step S3 is as follows: Use the electric crank handle (2) to control the motor (207) to rotate, thereby driving the rotating male connector (1071) and the first rotating female connector (101) of the force measuring module (1) to rotate, and finally driving the hand-cranked short shaft (4) of the original motor reducer of the switch machine to rotate. Alternatively, step S3 is as follows: crank the handle (302) of the hand crank (3) to drive the rotating male connector (1071) and the first rotating female connector (101) of the force measuring module (1) to rotate, thereby driving the hand crank short shaft (4) of the original motor reducer of the switch machine to rotate.

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