Remote switching double-speed centrifugal release device

Abstract

The utility model discloses a remote switching double-speed centrifugal release device which comprises a supporting frame, a double-speed centrifugal release device body, a transition disc, a reset spring, an electromagnetic coil, a pressing disc, a bearing I, a bearing II, a transparent cover, a spacer bush, a speed taking shaft, a speed taking wheel, a pusher dog, a screw and a cam valve. A high-speed centrifugal module and a low-speed centrifugal module are arranged in the double-speed centrifugal release device, the remote control electromagnetic coil is powered on, a pin shaft in the coil pushes the transition disc to move towards the double-speed centrifugal release device and limits work of the low-speed centrifugal module in the double-speed centrifugal release device, and the high-speed centrifugal module of the double-speed centrifugal release device dominates work. Detecting the high-speed running speed of the monorail crane; and when the remote control electromagnetic coil loses power, the transition disc resets under the action of the reset spring to relieve the limitation on the work of the low-speed centrifugal module in the double-speed centrifugal release device, and the low-speed centrifugal module of the double-speed centrifugal release device is dominated to work.

Description

Technical Field

[0001] The utility model relates to the field of centrifugal releasing devices, in particular to a remote switching dual-speed centrifugal releasing device. Background Art

[0002] Mechanical centrifugal release technology is widely used in many industries as a safety protection method for real-time online monitoring of operating speed and instant triggering of overspeeding. Mechanical centrifugal release technology is used for mechanical overspeed protection of coal mine monorail locomotives. However, the mechanical centrifugal release technology currently in use is mostly a set of devices that can only set one monitoring speed. Even if a set of devices can set two monitoring speeds, it is manually switched to select high-speed and low-speed values ​​for monitoring. Due to the large fluctuations in the height of coal mine tunnels, manual switching remains unchanged, and it cannot meet the needs of monorail locomotives to monitor the operating speed at different speed values ​​of high speed and low speed when operating under different working conditions. Based on the existing dual-speed centrifugal release device technology that manually switches to select high-speed and low-speed values ​​for monitoring, a dual-speed centrifugal release device that can set two detection speed values ​​and high-speed and low-speed values ​​can be remotely switched is developed to meet the above needs. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the utility model provides a remote-switching dual-speed centrifugal release device, which controls the movement of a transition plate through the combined action of an electromagnetic coil and a reset spring to achieve switching between high-speed and low-speed detection speed values.

[0004] In order to achieve the above utility model purpose, the technical solution adopted by the utility model is:

[0005] A remote switching dual-speed centrifugal release device comprises: a support frame, a dual-speed centrifugal release device, a transition plate, a reset spring, an electromagnetic coil, a pressure plate, a bearing I, a bearing II, a transparent cover, a spacer, a speed shaft, a speed wheel, a pusher claw, a screw, and a cam valve.

[0006] A magnetic conductive ring is designed in the coil hole of the electromagnetic coil, and a movable pin is arranged in the magnetic conductive ring hole;

[0007] The dual-speed centrifugal release device is assembled on the speed-taking shaft, and is assembled with the electromagnetic coil on the mounting plate and the connecting plate of the support frame respectively. A reset spring, a transition plate, a bearing I and a pressure plate are sequentially designed between the dual-speed centrifugal release device and the electromagnetic coil.

[0008] The cam valve is assembled on a mounting plate of the support frame;

[0009] The pusher claw is assembled on the pusher claw pin shaft of the support frame, and the clamping screw on the pusher claw directly presses on the cam valve lever wheel;

[0010] The dual-speed centrifugal release device comprises: a cover plate, a connecting plate, a centrifugal block I, a speed regulating spring, a centrifugal block II, a speed wheel, a speed shaft, a housing, a set screw, a centrifugal rod, an adjusting nut, a guide column, and a guide hole;

[0011] The centrifugal block I, centrifugal block II, centrifugal rod, connecting plate and set screws respectively form a high-speed centrifugal block and a low-speed centrifugal block in the shell, and rotate integrally with the shell, cover plate and transition plate under the shell belt;

[0012] The housing has two threaded through holes and is equipped with four adjusting nuts. The centrifugal rods of the high-speed and low-speed centrifugal blocks extend through the two adjusting nut holes respectively. A speed adjusting spring is provided between the adjusting nut and the centrifugal block. The housing is provided with a locking screw, and the adjusting nut can be locked after the speed value is calibrated.

[0013] The structure of the low-speed centrifugal assembly is the same as that of the high-speed centrifugal assembly, which is assembled in the housing near the cover plate. Two limiting holes corresponding to the guide holes on the cover plate are designed on the connecting plate on the cover plate of the low-speed centrifugal assembly. A transition plate is installed on the outer side of the cover plate, and a reset spring is designed between the cover plate and the transition plate. The limiting pin of the transition plate is inserted into the limiting hole on the connecting plate through the guide hole on the cover plate to limit the operation of the low-speed centrifugal assembly.

[0014] The centrifugal body block I and the centrifugal block II have cylindrical holes, the centrifugal rod passes through the cylindrical holes, and the set screws assemble the centrifugal rod and the centrifugal body block II into one. The centrifugal blocks I and II are each provided with two long holes, and the connecting plate is provided with two long cylinders, which are respectively inserted into the long holes on the centrifugal blocks I and II, that is, the centrifugal block I, the centrifugal block II, and the connecting plate form a whole. Under the joint action of the centrifugal force of the centrifugal blocks I and II, the connecting plate rotates, and the centrifugal rod is thrown outward with the centrifugal block II. If the dual-speed centrifugal release device limits the position change of any component of the low-speed centrifugal block, the low-speed centrifugal rod cannot be thrown outward.

[0015] Furthermore, the low-speed centrifugal assembly is assembled near the cover plate, which is provided with three guide posts. The transition plate rotates together with the housing of the dual-speed centrifugal release device under the action of the guide posts and can move between the cover plate and the support plate under the action of the electromagnetic coil and the return spring.

[0016] Furthermore, when the electromagnetic coil is energized, the movable pin in the center hole of the magnetic ring pushes the transition plate to move toward the cover of the dual-speed centrifugal release device under the action of magnetic force, and the limit pin on the transition plate is inserted into the cover of the dual-speed centrifugal release device and limits the operation of the low-speed centrifugal block, and the high-speed centrifugal block is in the dominant operation;

[0017] Furthermore, when the electromagnetic coil loses power, the transition plate moves away from the cover plate of the dual-speed centrifugal release device under the action of the reset spring, thereby releasing the restriction on the low-speed centrifugal assembly, and the low-speed centrifugal assembly takes the lead in the work.

[0018] The beneficial effects of the utility model are:

[0019] When the electromagnetic coil is energized, the transition plate moves toward the cover of the dual-speed centrifugal release device to limit the operation of the low-speed centrifugal block, and the high-speed centrifugal block is in the dominant working state. It can detect whether the instantaneous speed of the tested equipment during operation reaches the high-speed centrifugal release value.

[0020] When the electromagnetic coil loses power, the transition plate moves away from the cover of the dual-speed centrifugal release device under the action of the reset spring, releasing the restriction on the low-speed centrifugal block. The low-speed centrifugal block takes the lead in the work, and can detect whether the instantaneous speed of the tested equipment during operation reaches the low-speed centrifugal release value.

[0021] Even if the electromagnetic coil fails, the dual-speed centrifugal release device can ensure that one set of centrifugal blocks is in working monitoring state.

[0022] The device has a simple structure, and the switching between high-speed and low-speed values ​​is achieved by turning the electromagnetic coil on and off. It can realize remote switching and is easy to operate, and can meet the needs of monorail crane locomotives working in different operating conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the utility model;

[0024] Figure 2 It is a cross-sectional view of the utility model;

[0025] Figure 3 It is a top view of the utility model;

[0026] Figure 4 This is the front view of the support frame of the utility model;

[0027] Figure 5 It is a top view of the support frame of the utility model;

[0028] Figure 6 It is a cross-sectional view of the support frame of the utility model;

[0029] Figure 7 It is a cross-sectional view of the dual-speed centrifugal release device of the utility model;

[0030] Figure 8 It is a top view of the dual-speed centrifugal release device of the utility model;

[0031] Fig. 9 This is a structural diagram of the centrifugal assembly of the utility model;

[0032] Fig.10 This is the main view of the practical transition tray;

[0033] Fig.11 It is a top view of the transition plate of the utility model;

[0034] Fig.12 This is the internal structure diagram of the electromagnetic coil of the utility model;

[0035] Fig.13 This is a cross-sectional view of the thrust bearing solution adopted in the utility model.

[0036] Reference table of reference numerals:

[0037] 1-support frame, 1-1 mounting plate, 1-2 pin shaft, 1-3 connecting plate, 1-4 nut, 1-5 pusher claw pin shaft, 1-6 spring pin shaft, 2-dual speed centrifugal release device, 2-1 cover plate, 2-2 connecting plate, 2-3 centrifugal block I, 2-4 speed regulating spring, 2-5 centrifugal block II, 2-6 housing, 2-7 set screw, 2-8 centrifugal rod, 2-9 adjusting nut, 2-10 guide column, 2-11 guide hole, 3-transition plate, 3-1 guide hole, 3-2 plate body, 3-3 limit pin, 3-4 spring seat, 3-5 boss, 4-reset spring, 5-electromagnetic coil, 5-1 coil, 5-2 magnetic ring, 5-3 pin, 6-pressure plate, 7-bearing I, 8-bearing II, 9-transparent cover, 10-spacer, 11-speed shaft, 12-speed wheel, 13-pull claw, 14-screw, 15-cam valve, 16-thrust bearing. DETAILED DESCRIPTION

[0038] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings. The same parts are represented by the same figure numbers. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0039] In order to make the contents of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0040] like Figure 1-Figure 3 As shown, the remote switching dual-speed centrifugal release device includes: a support frame 1, a dual-speed centrifugal release device 2, a transition plate 3, a reset spring 4, an electromagnetic coil 5, a pressure plate 6, a bearing I 7, a bearing II 8, a transparent cover 9, a spacer 10, a speed shaft 11, a speed wheel 12, a pusher claw 13, a screw 14, and a cam valve 15.

[0041] like Figure 4-Figure 6As shown, the support frame 1 includes: a mounting plate 1-1, a pin 1-2, a connecting plate 1-3, a nut 1-4, a pusher pin 1-5, and a spring pin 1-6. The hole in the mounting plate 1-1 is coaxial with the hole in the connecting plate 1-3, and the connecting plate 1-3 is mounted on the three pins 1-2.

[0042] like Figure 7-Figure 8 As shown, the dual-speed centrifugal release device 2 includes: a cover plate 2-1, a connecting plate 2-2, a centrifugal block I 2-3, a speed regulating spring 2-4, a centrifugal block II 2-5, a housing 2-6, a set screw 2-7, a centrifugal rod 2-8, an adjusting nut 2-9, a guide column 2-10, and a guide hole 2-11.

[0043] like Fig. 9 As shown, the centrifugal body block Ⅰ2-3, the centrifugal block Ⅱ2-5, the connecting plate 2-2, the set screw 2-7, and the centrifugal rod 2-8 constitute a centrifugal block. The high-speed and low-speed centrifugal blocks have the same structure. The centrifugal body block Ⅰ2-3 and the centrifugal block Ⅱ2-5 have cylindrical holes, and the centrifugal rod 2-8 passes through the cylindrical holes. The set screw 2-7 assembles the centrifugal rod 2-8 and the centrifugal body block Ⅱ2-5 into one body. The centrifugal block Ⅰ2-3 and the centrifugal block Ⅱ2-5 are both provided with two The connecting plate 2-2 is provided with two long cylinders, which are respectively inserted into the long holes on the centrifugal body block Ⅰ2-3 and the centrifugal block Ⅱ2-5, that is, the centrifugal body block Ⅰ2-3, the centrifugal block Ⅱ2-5, the connecting plate 2-2, the set screw 2-7, and the centrifugal rod 2-8 form a whole. Under the joint action of the centrifugal force of the centrifugal body block Ⅰ2-3 and the centrifugal block Ⅱ2-5, the connecting plate 2-2 rotates, and the centrifugal rod 2-8 is thrown outward with the centrifugal block Ⅱ2-5.

[0044] like Figure 7 As shown, the shell 2-6 is designed with two threaded through holes, and the centrifugal rods 2-8 of the high-speed and low-speed centrifugal modules are respectively installed in the two threaded through holes of the shell 2-6, and the low-speed module is installed near the cover plate 2-1.

[0045] like Figure 10-11 As shown, the transition plate includes: a guide hole 3-1, a plate body 3-2, a limit pin shaft 3-3, a spring seat 3-4, and a boss 3-5. The guide hole 3-1 of the transition plate 3 corresponds one-to-one with the three guide posts 2-10 on the cover plate 2-1 of the dual-speed centrifugal release device 2, and the limit pin shaft 3-3 corresponds one-to-one with the guide hole 2-11.

[0046] like Figure 2 As shown, the dual-speed centrifugal release device 2 is assembled on the speed-taking shaft 11 and is installed in the hole of the mounting plate 1-1 through the bearing II 8, the transparent cover 9 and the spacer 10.

[0047] like Fig.12As shown, the electromagnetic coil 5 includes: a coil 5-1, a magnetic ring 5-2, and a pin 5-3. The pin 5-3 can move in the magnetic ring 5-2.

[0048] like Figure 2-Figure 6 As shown, the electromagnetic coil 5 is installed on the connecting plate 1-3.

[0049] like Figure 2-Figure 11 As shown, a transition plate 3 is designed between the dual-speed centrifugal release device 2 and the connecting plate 1-3, and three guide posts 2-10 on the cover plate 2-1 of the dual-speed centrifugal release device 2 are respectively inserted into the three guide holes 3-1 of the transition plate 3, driving the transition plate 3 and the dual-speed centrifugal release device 2 to rotate together.

[0050] like Figure 2 As shown, a return spring 4 is designed between the dual-speed centrifugal release device 2 and the spring seat 3-4 on the transition plate 3; a bearing Ⅰ7 and a pressure plate 6 that can move axially are designed in the hole of the connecting plate 1-3 of the support frame 1, and the boss 3-5 of the transition plate 3 is inserted into the hole of the bearing Ⅰ7. When the transition plate 3 rotates with the dual-speed centrifugal release device 2, the pressure plate 6 does not rotate;

[0051] like Fig.13 As shown, the remote switching dual-speed centrifugal release device can also use a thrust bearing 16 to replace the bearing Ⅰ7;

[0052] The electromagnetic coil 5 of the remote switching dual-speed centrifugal release device is energized, and the pin shaft 5-3 in the magnetic ring 5-2 pushes the pressure plate 6, the bearing I7, and the transition plate 3 to compress the reset spring 4 and move toward the dual-speed centrifugal release device 2 under the action of magnetic force. The limit pin shaft 3-3 on the transition plate 3 is inserted into the guide hole 2-11 on the cover plate 2-1 of the dual-speed centrifugal release device 2 to limit the low-speed module from working, and the high-speed centrifugal module of the dual-speed centrifugal release device takes the lead in working;

[0053] The electromagnetic coil 5 of the remote switching dual-speed centrifugal release device loses power, and the pressure plate 6, bearing Ⅰ7, transition plate 3, and pin shaft 5-3 move toward the electromagnetic coil 5 under the action of the reset spring 4, and the limit pin shaft on the transition plate 3 exits the dual-speed centrifugal release device 2, and the low-speed module in the dual-speed centrifugal release device takes the lead in work.

[0054] like Figure 3 As shown, the speed of the dual-speed centrifugal release device 2 reaches the set value, the centrifugal rod 2-10 throws out the collision finger 11, the finger 11 rotates to release the restriction on the valve handle of the cam valve 13, and the cam valve 13 is activated to transmit a speed over-limit signal.

[0055] like Figure 2As shown, the working principle of the remote switching dual-speed centrifugal release device is: the electromagnetic coil 5 is energized by remote control, and the high-speed centrifugal module of the dual-speed centrifugal release device takes the lead in working to detect the high-speed running speed of the monorail crane locomotive; the electromagnetic coil 5 is de-energized by remote control, and the low-speed centrifugal module of the dual-speed centrifugal release device takes the lead in working to detect the low-speed running speed of the monorail crane locomotive;

[0056] The high-speed and low-speed value conversion is remotely controlled and easy to operate. It is not affected by the height fluctuation of the tunnel when used on the monorail crane locomotive, and it automatically switches to the low-speed centrifugal module to take the lead in work when the power is off, which can prevent the influence of external factors such as electrical failure on the high-speed and low-speed value conversion.

[0057] The above description is only a preferred embodiment of the present utility model patent and is not intended to limit the present utility model patent. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model patent shall be included in the protection scope of the present utility model patent.

Claims

1. A remotely switchable dual-speed centrifugal release device, characterized in that: include: Support frame (1), dual-speed centrifugal release device (2), electromagnetic coil (5), bearing II (8), transparent cover (9), spacer (10), speed shaft (11), speed wheel (12), pusher claw (13), screw (14), cam valve (15); The support frame (1) comprises: a mounting plate (1-1) and a connecting plate (1-3); the dual-speed centrifugal release device (2) and the electromagnetic coil (5) are respectively assembled on the mounting plate (1-1) and the connecting plate (1-3) of the support frame (1); a reset spring (4), a transition plate (3), a bearing I (7) and a pressure plate (6) are sequentially arranged between the dual-speed centrifugal release device (2) and the electromagnetic coil (5); a magnetic ring (5-2) is arranged in the hole of the coil (5-1) in the electromagnetic coil (5); a movable pin (5-3) is arranged in the hole of the magnetic ring (5-2); the cam valve (15) is assembled on the mounting plate (1-1); the pusher claw (13) is assembled on the pusher claw pin (1-5) of the support frame (1); and the head of the screw (14) on the pusher claw (13) directly presses on the pusher rod wheel of the cam valve (15); The dual-speed centrifugal release device (2) has a high-speed centrifugal assembly and a low-speed centrifugal assembly built therein, and rotates integrally with the shell, the cover plate and the transition plate under the shell belt.

2. A remotely switchable dual-speed centrifugal release device according to claim 1, characterized in that: When the electromagnetic coil (5) is energized, the movable pin shaft (5-3) in the hole of the magnetic ring (5-2) pushes the transition plate (3) to move in the direction of the dual-speed centrifugal release device (2) under the action of magnetic force, and the limiting pin shaft (3-3) on the transition plate (3) is inserted into the guide hole (2-11) on the cover plate (2-1) of the dual-speed centrifugal release device (2) to limit the operation of the low-speed centrifugal block, and the high-speed centrifugal block is in a dominant working state.

3. A remotely switchable dual-speed centrifugal release device according to claim 1, characterized in that: When the electromagnetic coil (5) loses power, the transition plate (3) moves in a direction away from the dual-speed centrifugal release device (2) under the action of the reset spring (4), thereby releasing the restriction on the low-speed centrifugal block, and the low-speed centrifugal block takes the lead in the work.

4. A remotely switchable dual-speed centrifugal release device according to claim 1, characterized in that: If the electromagnetic coil (5) fails, the dual-speed centrifugal release device can also ensure that one group of centrifugal block groups is in a working monitoring state.

5. A remotely switchable dual-speed centrifugal release device according to claim 1, characterized in that: The cover plate (2-1) of the dual-speed centrifugal release device (2) is provided with guide columns (2-10) and guide holes (2-11), which correspond to the guide holes (3-1) and the limit pins (3-3) of the transition plate (3) respectively. The guide columns (2-10) on the cover plate (2-1) are respectively inserted into the guide holes (3-1) of the transition plate (3), thereby driving the transition plate (3) and the dual-speed centrifugal release device (2) to rotate together.

6. A remotely switchable dual-speed centrifugal release device according to claim 1, characterized in that: A bearing I (7) is arranged between the transition plate (3) and the pressure plate (6), and the boss (3-5) of the transition plate (3) is inserted into the hole of the bearing I (7). When the transition plate (3) rotates together with the dual-speed centrifugal release device (2), the pressure plate (6) does not rotate.

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