CN212621215U - Point switch crank type dynamometer - Google Patents

Abstract

A switch machine crank type dynamometer is composed of a dynamometer, a manual crank, an electric crank and a data control instrument. The inside of the dynamometer is provided with a torque sensor, a sensor driving circuit, a data acquisition circuit, a rotating speed monitoring circuit, a wireless data transmitting circuit and a battery power supply and monitoring circuit, and the outside of the dynamometer is provided with a shifting fork fixedly connected with a torque sensor shaft and a nylon sleeve provided with a magnet. The data control instrument is composed of a main control circuit, a wireless receiving circuit, a liquid crystal display screen, control keys, a battery power supply and monitoring circuit, an aperture and a nixie tube. When the test is carried out, a shifting fork of the dynamometer is connected with a matching shifting fork of the point switch, the handle is rotated to push the turnout to move, the tested torque data is sent out through the wireless sending circuit, the receiving circuit on the data controller receives the data, the maximum force and the steady-state force are calculated after the relevant processing is carried out, and an instantaneous force curve in the movement process is formed for people to use.

Description

Point switch crank type dynamometer

Technical Field

The utility model relates to a switch machine frictional force and switch conversion resistance's crank formula dynamometer, specifically speaking are a frictional force and conversion resistance test for railway switch machine, and the dynamometry instrument of the crank formula on accessible wireless mode arrives TFT liquid crystal display with data transmission simultaneously.

Background

The point switch is a basic power unit for railway turnout conversion and is used for traction turnout conversion. As the service life increases, the power of the switch machine may be attenuated, the switch conversion resistance may also be increased, and when the power of the switch machine at the traction position is smaller than the switch conversion resistance, the switch may not be converted in place, which affects normal driving. The friction is the main parameter describing the switch machine power, the friction and the switch conversion resistance of the switch machine are the necessary items for the daily maintenance of railway signals, and are also the important indexes describing the mechanical state of the switch conversion system.

The action rod of the switch machine is connected with the outer locking device of the turnout through a connecting pin. The current commonly used force measuring instruments in the field are a combination of pin sensors and special displays. The pin type sensor is the same as the connecting pin in diameter, the original connecting pin is detached before testing, the pin type sensor is installed, relevant data of friction force and conversion resistance can be read on a special display instrument after the turnout is electrically operated, and the connecting pin is restored to be connected with the action rod of the point switch and the turnout outer locking device after the testing is finished.

The disadvantages of this approach are:

firstly, the connecting pin needs to be disassembled and assembled, and the working difficulty is higher. The problems of corrosion, abrasion, deformation and the like of the connecting pin at the site part can cause difficult disassembly and assembly, and even the accident of parking can be caused because the connecting pin cannot be reassembled and restored in time after the over-force measurement is finished; in addition, the connecting pin is provided with anti-loosening assemblies such as split pins and the like, the waterproof cover is arranged above the connecting pin, the whole dismounting process is relatively complicated, the dismounting, the testing and the resetting of one traction point are not easy, and the operation efficiency is lower. Particularly in cold northern areas in winter, the operation difficulty is higher, and larger workload is brought to signalers.

Second, the test data is not necessarily accurate. For an electric switch machine, a friction coupler is a key power transmission part, temperature rise of the friction coupler can be caused by continuous and frequent friction, the internal state of the friction coupler can be changed, and test data can generate larger fluctuation and even lose reference significance. Therefore, the friction force test and value taking should be carried out in the cold state of the switch machine, and at the moment, the state of the friction coupling is stable, the data is more accurate, and the actual use state of the switch machine is closer to the field. But the force measuring process of the point switch inevitably can be carried out for a plurality of times and for a long time to cause temperature rise, and the specific reasons are as follows:

a, dragging turnouts by multiple machines, wherein when a first point switch is used for friction force test, adjacent second point switches are possible to idle and rub together; when the second platform is used for measuring force, the second platform needs to be rubbed again, and the continuous friction of the two wheels is easy to accumulate heat to cause temperature rise.

The value of the friction force B can be completed within a few seconds after the beginning of the polishing, but the polishing is usually continued even till 30 seconds due to the setting of a linkage system and the field reality; when the turnout is switched to another position for measurement, the turnout is polished for another 30 seconds, and the friction plate is heated to a certain extent. What is worse, when the friction force is measured and found not to meet the standard, the friction force needs to be increased by manual adjustment immediately, and whether the friction force reaches the standard after adjustment needs to be confirmed by the next 30-second polishing test of forward and backward rotation; at this time, data may be distorted due to temperature rise, but since it is more difficult to perform repeated measurement and confirmation by organizing manpower at the time of alternate cold days, only qualitative and variable data can be collected. The common phenomenon is that: after the friction force is found to be unqualified in the previous measurement, the adjustment is carried out, the test is qualified at that time, but the data difference is found to be large and even exceeds the standard when the measurement is repeated again, so that the adjustment and the measurement are more scientific and accurate, and the problem of troubling the signal worker is always solved.

And thirdly, the service life of the switch machine is influenced. At present, the test method is difficult to avoid excessive grinding, not only influences the data accuracy, but also threatens the reliable work and the service life of the point switch. Excessive friction will aggravate the wear and aging of the internal friction plates, affect the power of the switch machine and increase the use risk of not being able to pull the switch. The service life of part of the switch machines is shortened due to over-test, and the switch machines can only get off the train in advance in order to not influence the running efficiency of the train.

Still another solution is the torque crank test tool of patent No. 201720505058.0 of kansu triple control engineering limited, which essentially displays the magnitude of the friction force by the torsion force generated by the deformed torsion spring driving the pointer on the dial. The instrument has the disadvantages that data in the measuring process cannot be kept recorded, only one maximum force obtained in the process is kept when the measurement is finished, relevant personnel pay more attention to the change of the force in the process in the actual use process, namely the change curve of the force in the process is needed, meanwhile, the dial plate of the instrument rotates along with the crank, so that the hands on the dial plate are difficult to observe while shaking the crank in the testing process, and when the change force is insufficient, three point switches installed at the point rail positions of the track turnouts are generally required to synchronously work and arrive at the same time when the change force is measured on site, and the three point switches have different moving speeds due to different moving ranges, so that the three torque cranks are difficult to synchronously measure the change force. The instrument has virtually no capability to measure the transfer force, only the maximum friction force can be measured.

In view of the above, it is necessary to invent a crank type force measuring instrument capable of synchronously measuring three-point conversion force and friction force at a point rail and recording data curves at the same time.

Disclosure of Invention

The utility model aims at providing a goat crank formula dynamometer, this instrument can be directly accomplish the test of goat frictional force and switch conversion resistance at the goat from the crank kneck that takes, need not tear open and trade any subassembly such as connecting pin.

The purpose of the utility model is realized like this:

a switch machine crank type dynamometer is divided into four parts: dynamometer, manual crank, electric crank and data controller.

The inside of the dynamometer is provided with a torque sensor and a circuit board with circuits of torque sensor driving, data acquisition, wireless data transmission, a power supply battery and monitoring, rotating speed monitoring and the like, and the outside of the dynamometer is provided with components such as a shifting fork, a sleeve and the like which are fixedly connected with a torque sensor shaft. The data controller consists of a circuit board with circuits such as a main control circuit, a wireless receiving circuit, a power supply battery circuit, a monitoring circuit and the like, a TFT liquid crystal display screen, an operation key, a synchronous diaphragm, a speed display nixie tube and the like.

During testing, the tool provides a testing function for the friction force of the switch machine and the switch conversion resistance in a manual mode and an electric mode. The manual mode is a mode that a boss at the tail part of the dynamometer is matched with a manual crank, the crank is manually rotated, and then data is acquired in the process of pushing the point switch to move; the electric mode is a method of acquiring data by directly driving a switch machine with an electric handle instead of human power.

When the friction force is measured, the front end of the dynamometer is connected with a crank interface of the switch machine in a matching mode, the dynamometer is driven to rotate to push the switch machine to act in a manual or electric mode, data are measured through the built-in torque sensor and output through the wireless transmitting circuit, and at the moment, the wireless receiving circuit on the data controller receives the data, and after relevant processing is carried out, the maximum force and the steady-state force are calculated, and an instantaneous force curve in the motion process is formed and is used for an operator to refer.

When measuring the switching resistance, the realization mode of manual and electric mode is different, and the core is different guiding mode for synchronous switching of each traction point of the turnout. When the manual operation is carried out, matched diaphragm speeds are preset according to different strokes on a data controller interface, and operators of all traction points rotate a manual crank according to the rotating speed guidance of the diaphragms, so that synchronous conversion of all points is realized and data are acquired; during electric operation, a rotating speed sensor built in the dynamometer detects the rotating speed, the rotating speed V1 of the dynamometer and the target rotating speed V0 corresponding to the stroke are displayed on the data controller in real time, and an operator at each traction point controls the rotating speed of the electric crank so that V1= V0, and synchronous conversion and data acquisition of each point can be realized.

The utility model discloses a goat crank formula dynamometer, simple structure is light, data wireless transmission, convenient to use, be particularly suitable for manual work, can test goat's conversion resistance and frictional force effectively, brings very big convenience for the site personnel.

Drawings

Fig. 1 is a cross-sectional view of a switch machine crank type load cell.

Fig. 2 is a schematic view of a manual crank.

Fig. 3 is a schematic view of an electric crank.

Fig. 4 is a schematic diagram of a switch machine crank type force measuring instrument data manipulator.

Fig. 5 is a schematic diagram of the internal components of the switch machine crank type dynamometer cavity.

Fig. 6 is a front view of the housing.

Fig. 7 is a cross-sectional view of the housing.

Detailed Description

The invention is described in further detail below with reference to the accompanying drawings:

referring to fig. 1, 2, 3, 4: the switch machine crank type dynamometer consists of four large components, namely a dynamometer 1, a manual crank 2, an electric crank 3 and a data manipulator 4.

Referring to fig. 1, 2, 3, 4, 5, 6, 7: the force measuring instrument 1 comprises a shifting fork 10, a nylon sleeve 11 with an end face embedded with a magnet 111, a torque sensor 12, a jackscrew 121 connected with the torque sensor 12 and the shifting fork 10, a shell 13, a speed sensor 131 at the bottom of the shell 13, a charging port 132 on the side wall, an internal circuit component fixing plate 14, a torque sensor fixing bolt 15, a lithium battery 16, a circuit board and a component 17, a screw 141 connected with the circuit board 17 by the fixing plate 14, a circuit operation indicator light 171, an end cover 18, a connecting bolt 181 between the end cover 18 and the shell 13, a boss 182 matched with the end cover 18 and a manual crank 2 or an electric crank 3, a power switch 19 and other components.

The hand crank 2 is provided with a square hole 20 and a handle 21 which are matched with a boss 182 of the end cover 18 at the tail part of the dynamometer 1.

The electric crank handle 3 is provided with a square hole 30 matched with a boss 182 of the end cover 18 at the tail part of the dynamometer 1, a power switch 31, a handle 32 and a battery pack 33. The depth of the power switch 31 is related to the rotational speed of the electric crank 3, and the deeper the rotational speed, the faster the rotational speed, and the shallower the rotational speed.

The data controller 4 is composed of a liquid crystal display 40, a diaphragm 41 composed of a plurality of LEDs, a nixie tube 42, a key 43, a power switch 44, and an internal circuit.

The utility model discloses a use is like this:

testing the friction force of the switch machine: only need one set of dynamometer 1, manual crank 2 or electronic crank 3 and data controller 4 cooperation this moment can, open dynamometer 1 switch 19 under the free state that shift fork 10 does not receive external force, power indicator 171 scintillation this moment, if the red light scintillation indicates that 16 electric quantities of lithium cell are not enough, need charge, if the green light scintillation indicates that the electric quantity is sufficient, continue to use. The power switch 44 of the data manipulator 4 is turned on, and the data manipulator 4 is set in the friction force test interface.

During manual testing, the hole 20 of the manual crank handle 2 is matched with the boss 182 of the end cover 18 at the tail part of the dynamometer 1, the shifting fork 10 of the dynamometer 1 is matched with the corresponding interface inside the switch machine, and the handle 21 is shaken by hands to enable the dynamometer 1 to rotate. During electric test, the hole 30 of the electric crank handle 3 is matched with the boss 182 of the end cover 18 at the tail part of the dynamometer 1, the shifting fork 10 of the dynamometer 1 is matched with a corresponding interface inside the switch machine, and the dynamometer 1 rotates by tightly holding the electric handle 32 and pressing the power switch 31 by hands. No matter manual or electric test is adopted, data measured by the dynamometer 1 are sent through a wireless circuit on the circuit board 17, and a wireless receiving circuit on the circuit board inside the data controller 4 receives the data, processes and displays the data on the liquid crystal screen 40, so that an operator can view the data at any time or view the stored data and curves through the key 43 in a flipping mode afterwards, and power of the switch machine is evaluated.

Conversion resistance test: the operator of the traction point on each switch uses a switch machine crank type force gauge to test on the corresponding switch machine. At this time, the set of the dynamometer 1, the manual crank 2 or the electric crank 3 and the data controller 4 are combined, the dynamometer power switch 19 is turned on in a free state that the shifting fork 10 is not subjected to external force, the power switch 44 of the data controller 4 is turned on, and the data controller 4 is arranged in a conversion force test interface.

During manual testing, the respective data controllers 4 are firstly arranged through the keys 43, parameters such as a stroke, a rotating direction, a conversion time and the like are selected, at this time, the data controllers 4 automatically calculate the period of sequential lightening of the LEDs on the aperture 41, an operator seems that a light spot runs around at a certain speed, and as long as the speed of shaking the handle 21 by hands is consistent with the running speed of the light spot on the aperture 41, synchronous arrival of traction points of the turnout can be ensured. After a shifting fork 10 of the dynamometer 1 is connected with a corresponding interface inside the point switch, the handle 21 is shaken by hands to enable the dynamometer 1 to rotate, data measured by the system is sent in a wireless mode, the data controller 4 receives the data, processes and displays the data on the liquid crystal screen 40, an operator can watch the data in time, or the data and the curve are turned over and watched through the key 43 afterwards, and evaluation is given to the turnout state. During the electric test, the parameters such as the stroke and the switching time are first set on the respective data controller 4 through the keys 43, and at this time, the required rotation speed is displayed on the liquid crystal panel 41 of the data controller 4. After the shifting fork 10 of the force measuring instrument 1 is connected with the corresponding interface inside the switch machine, the synchronous arrival of each traction point of the turnout can be ensured only by manually pressing the power switch 31 of the electric crank 3 and controlling the depth of the switch 31 to ensure that the speed detected by the speed sensor 131 and displayed on the nixie tube 42 is matched with the speed displayed on the liquid crystal screen 40 and required. The data measured by the system when the dynamometer 1 rotates are sent in a wireless mode, and the data controller 4 receives the data, processes and displays the data on the liquid crystal screen 40 for operators to observe the data in time or turn over and observe the stored data and curves through the keys 43 afterwards, so as to evaluate the turnout state.

Claims (5)

1. A switch machine crank formula dynamometer, characterized by: the device is composed of a dynamometer (1), a manual crank (2), an electric crank (3) and a data controller (4), wherein a hole (20) of the manual crank (2) or a hole (30) of the electric crank (3) is matched with a boss (182) of an end cover (18) at the tail part of the dynamometer (1), data measured by the dynamometer (1) are sent in a wireless mode, and the data controller (4) receives and displays the data on a liquid crystal display screen (40) of the data controller (4).

2. A switch machine crank load cell according to claim 1, characterized in that: a torque sensor (12) is arranged in a dynamometer (1), a sensor driving circuit, a rotating speed monitoring circuit, a data acquisition circuit, a wireless data transmission circuit, a battery power supply circuit and a monitoring circuit are arranged on a circuit board (17), and a shifting fork (10) fixedly connected with a torque sensor shaft and a nylon sleeve (11) assembly with a magnet (111) are arranged outside the dynamometer.

3. A switch machine crank load cell according to claim 1, characterized in that: one end face of a nylon sleeve (11) of a dynamometer (1), which is close to a torque sensor, is provided with 1-8 magnets (111) at equal intervals on the circumference, and the bottom in a dynamometer shell (13) is provided with 1 speed sensor (131) at the position corresponding to the circumference.

4. A switch machine crank load cell according to claim 1, characterized in that: the internal circuit board of the data controller (4) is provided with a main control circuit, a wireless receiving circuit, a battery power supply circuit, a monitoring circuit, a liquid crystal display screen (40), an aperture (41), a nixie tube (42) and an operation key (43) component.

5. A switch machine crank load cell according to claim 1, characterized in that: the aperture (41) of the data controller (4) is formed by uniformly distributing 35-60 LED light-emitting diodes on the circumference with the diameter of 35-55 mm, and a 3-4 digit nixie tube (42) is arranged in the aperture.

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