Electric push rod provided with emergency motor and applied to electric parking anti-running device

Abstract

The utility model belongs to the technical field of emergency devices of parking anti-running devices, and particularly relates to an electric push rod with an emergency motor, which is applied to an electric parking anti-running device. Comprising a lead screw assembly, a torsion limiter assembly in transmission connection with the lead screw assembly, a speed reducer in transmission connection with the torsion limiter assembly, a main motor in power connection with the speed reducer, an electromagnetic clutch in electric power connection with the main motor and an emergency motor in electric power connection with the electromagnetic clutch. A rear output shaft extending out of the tail of the main motor is connected with a rotor at one end of the electromagnetic clutch, an output shaft of the emergency motor is connected with an aluminum guide seat at the other end of the electromagnetic clutch, the emergency motor and the electromagnetic clutch share the same power supply for power supply, and the main motor is independently powered by another power supply. In an emergency state, the device is simple and convenient to operate and high in safety, the efficiency is obviously improved, the emergency motor is not damaged during normal work, the service life of the emergency motor is prolonged, the maintenance cost is saved, and the reliability of emergency use is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the parking anti -slip device emergency device technical field, concretely relates to a kind of electric push rod with emergency motor applied to electric parking anti -slip device. BACKGROUND

[0002] With the wide application of electric parking anti -slip device in the safety field of preventing railway rolling stock from slipping, the requirements of railway department for the technical performance of electric parking anti -slip device are gradually improved, especially the power device of electric parking anti -slip device, which directly affects the reliability, safety and use efficiency of electric parking anti -slip device under abnormal conditions such as power failure, and is the key to ensure that electric parking anti -slip device can still serve railway transport production under abnormal conditions.

[0003] Under abnormal conditions such as power failure, first, part of equipment can only be manually operated by artificial on-site tool relying on manpower, manual operation needs to be in the position close to basic rail and railway rolling stock, and the use efficiency is extremely low, the labor intensity is extremely great, the safety risk is extremely high, which seriously affects the efficiency of railway transport production and seriously endangers the safety of on-site operators. Second, part of equipment is equipped with electric wrench for operator on the basis of retaining original manual mechanism, although it replaces pure manpower operation, but due to the need of transmission structure to change direction for several times to extend to operating position, the operation of mechanical structure is unreliable, which limits the improvement of equipment use efficiency, and the labor intensity of operator and the high personal safety risk problem have not been alleviated. Third, although the electric device of part of equipment adopts main and standby motor coaxial series connection, which can provide emergency power supply for emergency motor separately, it theoretically solves the above problems, but it does not consider the protection of equipment, and the main motor rotates inevitably to drive the emergency motor to rotate passively under normal circumstances, which easily damages the emergency motor, and the emergency motor may not work due to damage under abnormal conditions, with extremely low reliability. CONTENT OF UTILITY MODEL

[0004] In view of the above deficiencies in the prior art, the utility model provides an electric push rod with emergency motor applied to electric parking anti -slip device to solve the above existing problems.

[0005] In order to solve the above technical problems, the utility model adopts the following technical scheme:

[0006] The utility model relates to an electric push rod with emergency motor applied to electric parking anti -skid, including screw rod assembly, with screw rod assembly transmission connection's speed reducer, with speed reducer power connection's main motor, with main motor electric power connection's electromagnetic clutch and with electromagnetic clutch electric power connection's emergency motor, electromagnetic clutch sets up between main motor and emergency motor, the rear output shaft of main motor extension goes out and is connected with the rotor of one end of electromagnetic clutch, the output shaft of emergency motor is connected with the aluminium guide seat of the other end of electromagnetic clutch, emergency motor and electromagnetic clutch share same power supply, main motor is independently powered by another power supply.

[0007] Further, the wire seat of the electromagnetic clutch is fixedly connected to the main motor housing.

[0008] Further, the main motor and the emergency motor are both brushless and non-frequency conversion motors.

[0009] Further, the screw rod assembly comprises an assembly housing, a front movable lug mounted at the front end of the assembly housing, a piston tube mounted in the assembly housing, a screw rod mounted in the piston tube, and a nut movably sleeved on the screw rod.

[0010] Further, a torsion limiter assembly is mounted between the screw rod assembly and the speed reducer, the torsion limiter assembly comprising a torsion limiter housing and a torsion limiter mounted in the torsion limiter housing, the front end of the torsion limiter being connected with the screw rod, and the rear end of the torsion limiter being connected with the speed reducer.

[0011] Further, the assembly housing and the torsion limiter housing are flange bolted.

[0012] Further, the speed reducer, the main motor, the electromagnetic clutch and the emergency motor are covered with a load-bearing frame structure, the load-bearing frame structure comprising a load-bearing frame structure front end seat and a load-bearing frame structure rear end seat, the load-bearing frame structure front end seat and the load-bearing frame structure rear end seat being fixedly connected by a load-bearing frame structure long bolt.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The utility model discloses an emergency motor is added, under normal circumstances, the main motor works, and power is provided for electric push rod, under abnormal circumstances, the emergency motor works, and power is provided for electric push rod through the emergency power supply such as portable power supply, and the control cable connection operating end can extend to the safe place, and the operator is operated in the position far from the steel rail and the railway vehicle stay, when the emergency motor selects, can select the direct current motor similar to the wheel hub motor, satisfies the requirement of electric push rod limit size. The configuration of emergency motor is added, ensures that the electric parking prevention sliding device power device under abnormal circumstances is efficient, reliable work also, reduces the labor intensity and the personal safety risk of operator,

[0015] 2. The utility model discloses an electromagnetic clutch is added between the main motor and the emergency motor, and the rotor of electromagnetic clutch, aluminium guide base are connected with the output shaft of main motor rear end extension, the output shaft of emergency motor, and electromagnetic clutch and emergency motor share same power supply independent power supply, under normal circumstances, electromagnetic clutch is not electrified, and does not attract, and the output shaft of main motor is physically disconnected with the output shaft of emergency motor, avoids the main motor long time work and drives the passive rotation of emergency motor and causes the damage of emergency motor, only under abnormal circumstances, the emergency motor works, and electromagnetic clutch will be electrified, and attract, satisfy short time emergency power demand. The setting of electromagnetic clutch avoids the damage, the problem of failure of emergency motor because of passive rotation for a long time, improves the reliability of emergency motor, and reduces the maintenance cost,

[0016] 3. The utility model discloses the main motor and emergency motor select brushless, non -variable frequency motor, and electromagnetic clutch can adopt flexible coupling connection with two motor output shafts, prevent the interference electromagnetic clutch in the motor working process and lead to electromagnetic clutch false suction, and the output input shaft of each partial structure is connected outside through the flange and fastener of casing and fixed, guarantees the strength requirement of electric push rod. ACCURACY OF DRAWINGS

[0017] Figure 1 It is the general assembly structure schematic drawing of the utility model for a kind of electric push rod with emergency motor applied to electric parking prevention sliding device embodiment;

[0018] Figure 2 It is the screw rod subassembly schematic drawing in the utility model for a kind of electric push rod with emergency motor applied to electric parking prevention sliding device embodiment;

[0019] Figure 3 It is the torsion limiter subassembly schematic drawing in the utility model for a kind of electric push rod with emergency motor applied to electric parking prevention sliding device embodiment;

[0020] Figure 4 It is the main motor schematic drawing in the utility model for a kind of electric push rod with emergency motor applied to electric parking prevention sliding device embodiment.

[0021] Figure 5 The electromagnetic clutch in the electric push rod applied to the electric parking anti-slip device with an emergency motor of the utility model;

[0022] Figure 6 The emergency motor schematic diagram in the electric push rod applied to the electric parking anti-slip device with an emergency motor of the utility model;

[0023] The reference signs in the drawings of the specification include:

[0024] Front end movable lug 1, screw rod assembly 2, torsion limiter assembly 3, speed reducer 4, main motor 5, electromagnetic clutch 6, emergency motor 7, force bearing frame structure front end seat 8, force bearing frame structure long bolt 9, force bearing frame structure rear end seat 10, rear end fixed lug 11, assembly shell 12, piston pipe 13, screw rod 14, nut 15, shell flange 16, torsion limiter front flange 17, torsion limiter 18, torsion limiter shell 19, torsion limiter rear flange 20, shaft coupling 21, front output shaft 22, front flange 23, rear flange 24, rear output shaft 25, wire seat 26, clutch plate 27, rotor 28, aluminum guide base 29, output shaft 30, emergency motor flange 31, emergency motor shell 32. DETAILED DESCRIPTION

[0025] In order for those skilled in the art to better understand the utility model, the technical scheme of the utility model is further described below in combination with the drawings and examples.

[0026] Among them, the drawings are only used for example description, and the representation is only a schematic diagram, not a physical diagram, and cannot be understood as a limitation on the patent; in order to better illustrate the examples of the utility model, some components of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some known structures and their descriptions in the drawings may be omitted.

[0027] The same or similar reference signs in the drawings of the utility model examples correspond to the same or similar components; in the description of the utility model, it is understood that if the terms "upper", "lower", "left", "right", "inner", "outer" and the like appear, the orientation or positional relationship shown in the drawings is based on the orientation or positional relationship, only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, a specific orientation and operation, therefore the positional relationship description in the drawings is only used for example description, and cannot be understood as a limitation on the patent, for those skilled in the art, the specific meaning of the above terms can be understood according to the specific situation.

[0028] In the description of the utility model, unless another explicit provision and limitation, if the connection relationship between the components appears the term "connection" and the like, the term should be understood broadly, for example, it can be fixedly connected, can be detachably connected, or be integrated, can be mechanically connected, can be electrically connected, can be directly connected, can be indirectly connected through an intermediate medium, can be the communication inside two components or the interaction relationship of two components. For ordinary skilled in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to specific circumstances.

[0029] Embodiment:

[0030] As Figures 1-6 The utility model discloses an electric push rod with emergency motor applied to electric parking anti-slip device, including screw rod subassembly 2, torsion limiter subassembly 3, speed reducer 4, main motor 5, electromagnetic clutch 6, emergency motor 7, wherein the rotating part of each part is connected in front and back, and the shell is fixed together through flange, force bearing frame structure and fastener. The specific structure is as follows:

[0031] Screw rod subassembly: including front movable lug 1, subassembly shell 12, piston pipe 13, screw rod 14, nut 15.

[0032] Front movable lug 1 is connected with piston pipe 13, and piston pipe 13 is connected with nut 15, and piston pipe 13 and nut 15 are all sleeved on the outside of screw rod 14, and the rear end of screw rod 14 is provided with bearing, bearing seat and other auxiliary components, and the above-mentioned components are all sleeved in the inside of subassembly shell 12, wherein screw rod 14 is connected with torsion limiter 18, and subassembly shell 12 is connected with torsion limiter shell 19 through shell flange 16.

[0033] Torsion limiter subassembly: including torsion limiter 18, torsion limiter shell 19, can be set according to use scene and demand, and the main role is auxiliary protection motor.

[0034] The key groove or key shaft of one end of torsion limiter 18 is connected with screw rod 14, and the key groove or key shaft of the other end is connected with the output shaft of one end of speed reducer 4 through shaft coupling 21;Torsion limiter front flange 17 is connected with shell flange 16 of screw rod subassembly 2, and torsion limiter rear flange 20 is connected with force bearing frame structure front end seat 8. Wherein, torsion limiter shell 19 is sleeved on the outside of torsion limiter 18.

[0035] The speed reducer 4, the main motor 5, the electromagnetic clutch 6 and the emergency motor 7 are fixed in the load bearing frame structure. The side shell of the speed reducer 4 is connected with the front end seat 8 of the load bearing frame structure, and the output shaft on the same side passes through the front end seat 8 of the load bearing frame structure and is connected with the torsion limiter 18 through the shaft coupling 21. The other side shell of the speed reducer 4 is connected with the front flange 23 of the main motor 5, and the key groove on the same side is connected with the front output shaft 22 of the main motor 5. The long bolt 9 of the load bearing frame structure passes through the front flange 23 and the rear flange 24 of the main motor 5. The rear flange 24 is connected with the line seat 26 of the electromagnetic clutch 6. The rear output shaft 25 of the main motor 5 is connected with the rotor 28 of the electromagnetic clutch 6. The aluminum guide seat 29 of the electromagnetic clutch 6 is connected with the output shaft 30 of the emergency motor. The long bolt 9 of the load bearing frame structure passes through the flange 31 of the emergency motor. The shell 32 of the emergency motor is connected with the rear end seat 10 of the load bearing frame structure.

[0036] Specifically, when the electric push rod is used, the working principle is as follows:

[0037] Under normal circumstances, the main motor 5 is independently powered by a special power supply and is controlled by the remote control system of the electric parking anti-slip device or the on-site control cabinet (during maintenance). The electromagnetic clutch 6 and the emergency motor 7 are in a power-off state. The clutch plate 27 of the electromagnetic clutch 6 is not attracted, and the output shaft 30 of the emergency motor is in a disconnected position with the rear output shaft 25 of the main motor 5. After the main motor 5 receives the braking or relief signal of the electric parking anti-slip device, the main motor 5 starts, and the front output shaft 22 and the rear output shaft 25 of the main motor 5 are synchronously forward or reverse rotated, driving the input and output shafts of the speed reducer 4 to forward or reverse rotate, in turn driving the torsion limiter 3 and the screw rod 14 of the screw rod assembly 2 to forward or reverse rotate. When the screw rod 14 rotates, the screw nut 15 moves forward and backward on the screw rod 14 through the action of the thread, the piston pipe 13 is driven to extend or retract by the screw nut 15, and the front movable lug 1 is driven to move forward and backward by the piston pipe 13. Since the rear fixed lug 11 is connected with the structure in the electric parking anti-slip device that cannot move forward and backward, and the front movable lug 1 is connected with the transmission structure in the electric parking anti-slip device that can move forward and backward, the front movable lug 1 drives the transmission structure in the electric parking anti-slip device to move forward and backward, thereby realizing the braking or relief of the electric parking anti-slip device.

[0038] Abnormal condition: the main motor 5 is independently powered off or the main motor 5 is disconnected with the control system of the electric parking anti-slip device; the electromagnetic clutch 6 and the emergency motor 7 are powered by the emergency power supply such as the field portable power supply and are controlled by the field control cabinet or the portable control terminal. After the electromagnetic clutch 6 and the emergency motor 7 receive the braking or relieving signal of the electric parking anti-slip device, the clutch plate 27 of the electromagnetic clutch 6 is attracted, the emergency motor output shaft 30 is connected with the rear output shaft 25 of the main motor 5, the emergency motor 7 is started, the emergency motor output shaft 30 rotates forward or reversely, the aluminum guide base 29, the clutch plate 27 and the rotor 28 of the electromagnetic clutch 6 rotate forward or reversely, the rotor 28 of the electromagnetic clutch 6 drives the rear output shaft 25 and the front output shaft 22 of the main motor 5 to rotate forward or reversely, the front output shaft 22 of the main motor 5 drives the input and output shaft of the speed reducer 4 to rotate forward or reversely, and then drives the torsion limiter 3 and the lead screw 14 of the screw rod assembly 2 to rotate forward or reversely. When the lead screw 14 rotates, the screw nut 15 moves forward and backward on the lead screw 14 through the action of the thread, the piston pipe 13 is driven to stretch and contract by the screw nut 15, and the front movable lug 1 is driven to move forward and backward by the piston pipe 13. Since the rear fixed lug 11 is connected with the structure in the electric parking anti-slip device which cannot move forward and backward, and the front movable lug 1 is connected with the transmission structure in the electric parking anti-slip device which can move forward and backward, the front movable lug 1 drives the transmission structure in the electric parking anti-slip device to move forward and backward, thereby realizing the braking or relieving of the electric parking anti-slip device.

[0039] The above is only an embodiment of the present application, and the specific structures and properties of the scheme and the like are not described in detail. The ordinary technical personnel in the field knows all the ordinary technical knowledge in the technical field of the present application before the application date or the priority date, can know all the prior art in the field, and has the ability to apply the conventional experimental means before the date. The ordinary technical personnel in the field can improve and implement the scheme based on their own ability under the inspiration of the present application. Some typical known structures or known methods should not be an obstacle for the ordinary technical personnel in the field to implement the present application. It should be noted that, for the technical personnel in the field, without departing from the structure of the present application, a number of modifications and improvements can be made, which should be considered as the protection scope of the present application. These do not affect the effect and practicality of the present application.

Claims

1. An electric push rod with emergency motor applied to an electric parking brake preventer, characterized in that: The application relates to a screw rod assembly, a speed reducer connected with the screw rod assembly, a main motor connected with the speed reducer, an electromagnetic clutch connected with the main motor, and an emergency motor connected with the electromagnetic clutch.

2. An electric push rod with emergency motor for electric parking brake preventer according to claim 1, characterized in that: The electromagnetic clutch is arranged between the main motor and the emergency motor, the rear output shaft of the main motor is connected with a rotor at one end of the electromagnetic clutch, the output shaft of the emergency motor is connected with an aluminum guide base at the other end of the electromagnetic clutch, the emergency motor and the electromagnetic clutch share the same power supply, and the main motor is independently supplied with power by another power supply.

3. An electric push rod with emergency motor for electric parking brake preventer according to claim 2, characterized in that: The wire seat of the electromagnetic clutch is fixedly connected with the main motor shell.

4. An electric push rod with emergency motor for electric parking brake preventer according to claim 3, characterized in that: The main motor and the emergency motor are both brushless and non-variable frequency motors.

5. An electric push rod with emergency motor for electric parking brake preventer according to claim 4, characterized in that: The screw rod assembly comprises an assembly shell, a front movable lug arranged at the front end of the assembly shell, a piston pipe arranged in the assembly shell, a screw rod arranged in the piston pipe, and a nut arranged on the screw rod and movable forward and backward.

6. An electric push rod with emergency motor for electric parking brake preventer according to claim 5, characterized in that: A torsion limiter assembly is arranged between the screw rod assembly and the speed reducer, the torsion limiter assembly comprises a torsion limiter shell and a torsion limiter arranged in the torsion limiter shell, the front end of the torsion limiter is connected with the screw rod, and the rear end of the torsion limiter is connected with the speed reducer.

7. An electric push rod with emergency motor for electric parking brake preventer according to claim 6, characterized in that: The assembly shell and the torsion limiter shell are flange bolted. The speed reducer, the main motor, the electromagnetic clutch and the emergency motor are covered with a load bearing frame structure, the load bearing frame structure comprises a load bearing frame structure front end seat and a load bearing frame structure rear end seat, a load bearing frame structure long bolt is arranged between the load bearing frame structure front end seat and the load bearing frame structure rear end seat, and the load bearing frame structure front end seat and the load bearing frame structure rear end seat are fixedly connected through the load bearing frame structure long bolt.

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