Asynchronous motor steering dual protection device

Abstract

The utility model relates to the field of asynchronous motors, in particular to a steering dual-protection device for an asynchronous motor. Comprising a machine body, the arc surface of the machine body is fixedly connected with a supporting plate, the arc surface of the machine body is provided with a controller, the controller is internally provided with an encoder, one side of the controller is electrically connected with a wire, one end, away from the controller, of the wire is electrically connected with a relay, and the lower surface of the relay is provided with an adjusting structure; the upper surface of the connecting plate is fixedly connected with the relay, one side of the connecting plate is rotatably connected with a rolling wheel, the electric wire sleeves the arc surface of the rolling wheel, the centrifugal position of the side, away from the connecting plate, of the rolling wheel is fixedly connected with a sliding rod, and the arc surface of the sliding rod is in threaded connection with an adjusting ring. The asynchronous motor steering dual-protection device provided by the utility model has the advantages that a worker can conveniently adjust the rolling wheel to tighten the wire between the machine body and the relay, and the normal use of the device can be prevented from being influenced by the winding of the wire.

Description

Technical Field

[0001] The utility model relates to the field of asynchronous motors, in particular to a double protection device for the rotation direction of an asynchronous motor. Background Art

[0002] An asynchronous motor is a type of induction motor and is a kind of motor powered by simultaneously connecting to an alternating current power supply, which can be used to drive the oil pump of a hydraulic excavator.

[0003] The utility model with the publication number CN218416049U discloses an asynchronous motor. The key points of its technical solution are as follows: It includes a motor housing. An installation base is installed at the bottom of the motor housing. A fixed flange is arranged on one side of the motor housing. A fixed bottom plate is installed at the top of the motor housing, and two fixed vertical plates are installed on the top of the fixed bottom plate. Compared with the prior art, this asynchronous motor can drive the driving gear to rotate by rotating the rotating handle, so that the first rack and the second rack can be separated, thereby driving the first moving housing and the second moving housing to separate, and thus the power connection components inside the first moving housing and the second moving housing can be exposed. The staff can perform the power connection operation on the machine body in an open space, which is convenient for the staff to handle the power connection operation of the motor. And because the operation space is increased, the staff has a clear line of sight during the power connection work, so to a certain extent, it can ensure the safety of the staff's power connection operation.

[0004] Regarding the above related content, it is found that there are technical defects: When an asynchronous motor is used to drive the oil pump of a hydraulic excavator, since the oil pump cannot operate in reverse, it is necessary to ensure that the asynchronous motor always rotates in one direction, otherwise it is easy to cause damage to the oil pump. The prior art uses double protection of a relay and an encoder to prevent the asynchronous motor from reversing. When the relay is in use, it controls the asynchronous motor by relying on connecting wires and cables, but the wires are prone to entanglement, which will affect the normal use of the device. Content of the Utility Model

[0005] The purpose of the present utility model is to solve the deficiencies existing in the prior art and to propose a double protection device for the rotation direction of an asynchronous motor.

[0006] The control device of claim 1, wherein the control wheel is located adjacent to the control wheel, and the control wheel is connected to the control wheel at the control wheel end.

[0007] The effect achieved by the above components is that by setting the adjustment structure, personnel can easily adjust the reel to tighten the wires between the body and the relay, thereby preventing the wires from getting tangled and affecting the normal use of the device.

[0008] Preferably, a rubber pad is fixedly connected to one side of the adjustment ring close to the limiting plate, and the diameter of the rubber pad is larger than the diameter of the adjustment ring.

[0009] The effect achieved by the above components is that the rubber pad can increase the friction force of the adjustment ring close to the limit plate, so that the adjustment ring can be squeezed and connected to the limit plate more firmly with the help of the rubber pad.

[0010] Preferably, one end of the reel is fixedly connected to a turntable, and the cross-section of the turntable is "T"-shaped.

[0011] The effect achieved by the above components is that personnel can use the turntable to rotate the reel, thereby achieving the effect of convenient control of the reel.

[0012] Preferably, a plurality of protrusions are fixedly connected to the outer wall of the reel, and the protrusions are evenly distributed on the outer wall of the reel.

[0013] The effect achieved by the above components is that the protrusions can make the arc surface of the reel uneven, thereby preventing the wire from slipping off the arc surface of the reel as much as possible.

[0014] Preferably, an auxiliary structure is provided at one end of the body, and the auxiliary structure includes a gear ring, which is fixedly connected to the arc surface of the output end of the body. A partition is fixedly connected to one end of the body, and a screw is slidably penetrated through the surface of the short arm end of the partition.

[0015] The effects achieved by the above components are as follows: By setting the auxiliary structure, personnel can conveniently lock and limit the output end of the asynchronous motor, avoiding the accidental start of the body by personnel and causing the accidental start of the oil pump, thereby further improving the practicality of the asynchronous motor.

[0016] Preferably, a guide block is fixedly connected to the lower end of the screw rod, and the guide block has a conical structure.

[0017] The effects achieved by the above components are as follows: By setting a guide block with a conical structure at the lower end of the screw rod, the effect of conveniently clamping the screw rod to the toothed ring can be achieved.

[0018] Preferably, a circular rail is fixedly connected to one end of the body, and several sliders are slidably connected to the inner wall of the circular rail, and one side of the slider is fixedly connected to the toothed ring.

[0019] The effects achieved by the above components are as follows: During the process of the output end of the body driving the toothed ring to rotate, the slider fixed on the toothed ring slides along the inner wall of the circular rail, achieving the effect of improving the stability of the circular rail during rotation.

[0020] Compared with the related technology, a double protection device for the rotation direction of an asynchronous motor provided by the present invention has the following beneficial effects:

[0021] The present invention provides a double protection device for the rotation direction of an asynchronous motor. By setting an adjustment structure, personnel can conveniently adjust the reel to tighten the wire between the body and the relay, thereby avoiding the wire entanglement and affecting the normal use of the device.

[0022] By setting the auxiliary structure, personnel can conveniently lock and limit the output end of the asynchronous motor, avoiding the accidental start of the body by personnel and causing the accidental start of the oil pump, thereby further improving the practicality of the asynchronous motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of a double protection device for the rotation direction of an asynchronous motor provided by the present invention;

[0024] Figure 2 is Figure 1 a schematic structural diagram of the adjustment structure shown;

[0025] Figure 3 is Figure 1 a schematic partial structural diagram of the adjustment structure shown;

[0026] Figure 4 is Figure 1 a schematic structural diagram of the auxiliary structure shown.

[0027] Reference numerals in the figure: 1, body; 2, support plate; 3, adjustment structure; 301, connecting plate; 302, winding wheel; 303, slide bar; 304, adjustment ring; 305, fixing plate; 306, limiting plate; 307, limiting hole; 308, turntable; 309, rubber pad; 310, bump; 4, auxiliary structure; 41, toothed ring; 42, partition plate; 43, screw; 44, guide block; 45, annular rail; 46, slider; 5, controller; 6, wire; 7, relay. Detailed implementation manners

[0028] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0029] The following describes in detail the specific implementation of the present utility model with reference to specific embodiments.

[0030] Please refer to Figures 1 to 4 , an asynchronous motor steering dual protection device provided by an embodiment of the present utility model includes: a body 1, a support plate 2 fixedly connected to the arc surface of the body 1, a controller 5 installed on the arc surface of the body 1, an encoder installed inside the controller 5, a wire 6 electrically connected to one side of the controller 5, a relay 7 electrically connected to the end of the wire 6 away from the controller 5, an adjustment structure 3 provided on the lower surface of the relay 7, and an auxiliary structure 4 provided at one end of the body 1.

[0031] In an embodiment of the present utility model, please refer to Figure 2 and Figure 3The adjusting structure 3 includes a connecting plate 301, the upper surface of the connecting plate 301 is fixedly connected to the relay 7, and one side of the connecting plate 301 is rotatably connected to the reel 302, and the wire 6 is sleeved on the arc surface of the reel 302, and the reel 302 is fixedly connected to the centrifugal position of the side of the connecting plate 301, and the arc surface of the slide rod 303 is threadedly connected to the adjusting ring 304. The side of the connecting plate 301 close to the reel 302 is fixedly connected to two fixing plates 305, and one side of the two fixing plates 305 is fixedly connected to the limiting plate 306, and a limiting hole 307 is provided on the side of the limiting plate 306, and the arc surface of the slide rod 303 fits the inner wall of the limiting hole 307. By setting the adjusting structure 3, the personnel can easily adjust the reel 302 to tighten the wire 6 between the body 1 and the relay 7, so as to prevent the wire 6 from getting tangled and affecting the normal operation of the device. The cam 308 is a small piece of wood that is fixed on the cam 308, so that the cam 308 of the cam 308 can be adjusted by the user.

[0032] In the embodiments of the present invention, please refer to Figure 4 The auxiliary structure 4 includes a gear ring 41, which is fixedly connected to the arc surface of the output end of the machine body 1. One end of the machine body 1 is fixedly connected to a partition 42, and a screw 43 is slidably penetrated on the surface of the short arm end of the partition 42. By setting the auxiliary structure 4, personnel can conveniently lock the output end of the asynchronous motor to limit the position, thereby preventing personnel from accidentally starting the machine body 1 and causing the oil pump to start incorrectly, thereby further improving the practicality of the asynchronous motor. The lower end of the screw 43 is fixedly connected to a guide block 44, which has a conical structure. By arranging a guide block 44 with a conical structure at the lower end of the screw 43, the screw 43 can be easily clamped to the gear ring 41. One end of the machine body 1 is fixedly connected to an annular rail 45, and the inner wall of the annular rail 45 is slidably connected to a plurality of sliders 46. One side of the slider 46 is fixedly connected to the gear ring 41. When the output end of the machine body 1 drives the gear ring 41 to rotate, the slider 46 fixed on the gear ring 41 slides along the inner wall of the annular rail 45, thereby improving the stability of the rotation process of the annular rail 45.

[0033] The working principle of the dual protection device for asynchronous motor steering provided by the present invention is as follows: the dual protection of the relay 7 and the motor encoder solves the problem of oil pump damage caused by steering errors that may be caused when the motor is driven. When it is necessary to tighten the wire 6 between the body 1 and the relay 7 to prevent the wire 6 from being entangled, first rotate the adjusting ring 304 to drive the rubber pad 309 to separate from the limit plate 306, and then rotate the turntable 308 to drive the reel 302 to reel the wire 6 on its arc surface. When the wire 6 is reeled to a length that will not cause entanglement, rotate the adjusting ring 304 in the opposite direction to drive the rubber pad 309 to abut against the limit plate 306. The reel 302 can be fixed to complete the winding of the wire 6. The rubber pad 309 can increase the friction force of the adjusting ring 304 close to the limit plate 306, so that the adjusting ring 304 can be squeezed and connected to the limit plate 306 with the help of the rubber pad 309 to achieve a more stable effect. Among them, the protrusion 310 can make the arc surface of the reel 302 uneven, so as to minimize the slipping of the wire 6 from the arc surface of the reel 302. By setting the adjustment structure 3, personnel can easily adjust the reel 302 to tighten the wire 6 between the body 1 and the relay 7, so as to avoid the entanglement of the wire 6 and affect the normal use of the device.

[0034] When the asynchronous motor is not in use, personnel can rotate the screw 43 to clamp the gear ring 41. When the asynchronous motor is needed to drive the oil pump of the hydraulic excavator, the screw 43 can be separated from the gear ring 41 by rotating it. By providing a guide block 44 with a conical structure at the lower end of the screw 43, the screw 43 can be easily clamped to the gear ring 41. In the process of the output end of the body 1 driving the gear ring 41 to rotate, the slider 46 fixed on the gear ring 41 slides along the inner wall of the annular rail 45, thereby achieving the effect of improving the stability of the rotation process of the annular rail 45. By providing the auxiliary structure 4, personnel can easily lock the output end of the asynchronous motor to a limit position, thereby avoiding the accidental start of the oil pump caused by the accidental start of the body 1 by personnel, thereby further improving the practicality of the asynchronous motor.

[0035] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0036] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An asynchronous motor steering dual protection device, characterized in that Including: A body (1), a support plate (2) is fixedly connected to the arc surface of the body (1), a controller (5) is installed on the arc surface of the body (1), an encoder is installed inside the controller (5), one side of the controller (5) is electrically connected to a wire (6), the end of the wire (6) far from the controller (5) is electrically connected to a relay (7), an adjusting structure (3) is arranged on the lower surface of the relay (7), the adjusting structure (3) includes an adapter plate (301), the upper surface of the adapter plate (301) is fixedly connected to the relay (7), a reel (302) is rotatably connected to one side of the adapter plate (301), the wire (6) is sleeved on the arc surface of the reel (302), a sliding rod (303) is fixedly connected to the centrifugal position on the side of the reel (302) far from the adapter plate (301), an adjusting ring (304) is threadedly connected to the arc surface of the sliding rod (303), two fixing plates (305) are fixedly connected to the side of the adapter plate (301) close to the reel (302), a limiting plate (306) is fixedly connected to one side of the two fixing plates (305), a limiting hole (307) is formed in the side surface of the limiting plate (306), and the arc surface of the sliding rod (303) is in fit with the inner wall of the limiting hole (307).

2. The dual protection device for the rotation direction of an asynchronous motor according to claim 1, characterized in that, A rubber pad (309) is fixedly connected to the side of the adjusting ring (304) close to the limiting plate (306), and the diameter of the rubber pad (309) is larger than that of the adjusting ring (304).

3. The dual protection device for the rotation direction of an asynchronous motor according to claim 1, characterized in that, A turntable (308) is fixedly connected to one end of the reel (302), and the cross section of the turntable (308) is in a "T" shape.

4. An asynchronous motor steering dual protection device according to claim 1, characterized in that, A plurality of bumps (310) are fixedly connected to the outer wall of the reel (302), and the bumps (310) are evenly distributed on the outer wall of the reel (302).

5. An asynchronous motor steering double protection device according to claim 1, characterized in that, An auxiliary structure (4) is arranged at one end of the body (1), the auxiliary structure (4) includes a toothed ring (41), the toothed ring (41) is fixedly connected to the arc surface of the output end of the body (1), a partition plate (42) is fixedly connected to one end of the body (1), and a screw rod (43) is slidably inserted through the surface of the short arm end of the partition plate (42).

6. The dual protection device for the rotation direction of an asynchronous motor according to claim 5, characterized in that, A guide block (44) is fixedly connected to the lower end of the screw rod (43), and the guide block (44) is in a conical structure.

7. An asynchronous motor steering dual protection device according to claim 5, characterized in that, An annular rail (45) is fixedly connected to one end of the body (1), a plurality of sliders (46) are slidably connected to the inner wall of the annular rail (45), and one side of the slider (46) is fixedly connected to the toothed ring (41).

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