Function testing device for elevator speed governor

Abstract

The invention discloses an elevator speed governor function testing device which comprises a main box body, a power assembly used for providing power needed by detection for a speed governor is arranged in the main box body, a switch assembly used for cutting off power transmission is arranged on the upper side of the power assembly, and a lifting table is arranged on the upper side of the main box body. A speed measuring assembly used for detecting the linear speed of the speed governor when the speed governor is triggered is arranged in the lifting table. The speed governor is driven to rotate by rotating the annular rotating wheel and the steel wire rope so as to simulate the process that the speed governor is driven to rotate through the speed governor rope when an elevator runs, so that the detection platform is relatively simple in structure and relatively small in size compared with an existing detection platform, and when the speed governor stops, the annular rotating wheel automatically stops rotating; when the speed governor is detected, the steel wire rope stops pulling the speed governor, so that the damage to the internal part structure of the speed governor in the detection process is reduced to the greatest extent, the detected speed governor can be directly put into use after simple detection, and the production cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field related to elevator detection, and in particular to a device for testing the function of an elevator speed limiter. Background Art

[0002] The elevator speed limiter is one of the safety control components in the elevator safety protection system. The normal operation of the speed limiter is an important guarantee for the safe operation of the elevator. Therefore, the sensitivity test of the elevator speed limiter under dynamic balance is particularly important. The test content mainly focuses on whether the speed limiter can start normally and whether its reaction speed meets the requirements when the elevator overspeeds by 115%.

[0003] At present, the speed limiter test is mainly carried out on a test platform, which uses a heavy object to simulate the overspeed movement of the car, and uses a detection instrument to detect whether the speed limiter can work normally. However, since a heavy object is used to simulate the movement of the car, the entire detection platform is large in size and complex in structure, resulting in a high cost of the platform and increased production costs. At the same time, during frequent detection processes, the frequent pulling of the heavy object can easily cause damage to the structural components in the speed limiter, so that the speed limiter after the test cannot be put into use directly, and the speed limiter that has not been detected cannot be guaranteed to be able to be used normally. Therefore, the current elevator speed limiter detection platform has certain disadvantages. Summary of the invention

[0004] Based on this, the purpose of the present invention is to overcome the defects of the prior art and provide a speed limiter testing device which is small in size and can be directly put into use after detection.

[0005] To achieve the purpose of the present invention, the following technical solutions are provided: an elevator speed limiter function test device, comprising a main box, a power assembly for providing the speed limiter with power required for detection is arranged in the main box, a switch assembly for cutting off power transmission is arranged on the upper side of the power assembly, a lifting platform is arranged on the upper side of the main box, and a speed measuring assembly for detecting the linear speed of the speed limiter when the speed limiter is triggered is arranged in the lifting platform;

[0006] The power assembly comprises an annular rotating wheel arranged in the main box body, a driving rotating wheel is rotatably matched in the annular rotating wheel, and six magnetic latches are arranged between the driving rotating wheel and the annular rotating wheel;

[0007] The switch assembly comprises a slider disposed in the main housing, two left-right symmetrical guide wheels are disposed in the slider, and contact switches are disposed on both upper and lower sides of the slider;

[0008] The speed measuring assembly includes a speed measuring wheel arranged in the lifting platform, a driving bevel gear is arranged on the front side of the speed measuring wheel, a driven bevel gear meshing with the driving bevel gear is arranged on the right side of the driving bevel gear, and a speed meter fixedly connected to the lifting platform is arranged on the right side of the driven bevel gear.

[0009] Among them, a wheel cavity is provided in the main housing, a second motor fixedly connected to the main housing is provided at the rear side of the wheel cavity, a second motor shaft is fixed to the front end face of the second motor, the front part of the second motor shaft extends forward into the wheel cavity, the driving wheel is fixed to the front end of the second motor shaft, the annular wheel is located in the wheel cavity, a steel wire rope is provided on the outer periphery of the annular wheel, and the speed limiter can be driven to rotate through the steel wire rope by the rotation of the annular wheel.

[0010] Among them, six limit cavities are arranged in the annular rotating wheel and are distributed circumferentially with the second motor shaft as the center, and the openings of the limit cavities are arranged inwardly; six pin cavities are arranged in the active rotating wheel and are distributed circumferentially with the second motor shaft as the center, and the openings of the pin cavities are arranged outwardly; magnetic pins are slidably fitted in the six pin cavities, and electromagnets are fixed on the bottom walls of the six pin cavities; pin springs are fixed between the six electromagnets and the six magnetic pins, and the magnetic pins can be slid inwardly and outwardly by utilizing the gain and loss of electricity of the electromagnets and the elastic force of the pin springs, thereby realizing the clutch between the active rotating wheel and the annular rotating wheel.

[0011] Among them, a slider cavity is provided on the upper side of the rotor cavity, and two lower through cavities which are symmetrical on the left and right and open upward are connected on the upper side of the rotor cavity. The lower through cavity on the right side passes through the slider cavity, and the slider is slidably connected to the slider cavity. A wire rope through cavity which passes through up and down is provided in the slider, and guide wheel cavities are connected on the left and right sides of the wire rope through cavity. A guide wheel shaft is fixed between the front and rear end walls of the two guide wheel cavities, and the guide wheels on the left and right sides are respectively fixed to the guide wheel shafts on the corresponding sides, and slider springs are fixed between the upper and lower end surfaces of the slider and the upper and lower end walls of the slider cavity, and the contact switch is fixed to the right end wall of the slider cavity, and the slider is driven upward or downward by the steel wire, so that the slider touches the upper contact switch or the lower contact switch, thereby controlling the gain and loss of power of the electromagnet.

[0012] Among them, the lifting platform is provided with two upper through cavities which pass through from top to bottom, a tachometer wheel cavity is connected to the right side of the upper through cavity, an axle seat cavity is provided on the front side of the tachometer wheel cavity, an axle seat is slidably fitted in the axle seat cavity, a tachometer wheel axle is rotatably fitted in the axle seat, the rear part of the tachometer wheel axle extends backward into the tachometer wheel cavity, the tachometer wheel is fixed to the rear end of the tachometer wheel axle, axle seat springs are fixed between the left and right end faces of the axle seat and the left and right end walls of the axle seat cavity, the tachometer wheel can always be in close contact with the wire rope by utilizing the elastic force of the axle seat spring and the sliding of the axle seat in the axle seat cavity.

[0013] Among them, a bevel gear cavity is provided on the front side of the shaft seat cavity, the front part of the speed measuring wheel shaft extends forward into the bevel gear cavity, the active bevel gear is fixed to the front end of the speed measuring wheel shaft, a driven bevel gear shaft is fixed to the left end face of the speed meter, the left part of the driven bevel gear shaft extends to the left through the bevel gear cavity to the left end wall of the bevel gear cavity, a sleeve located in the bevel gear cavity is slidably fitted on the driven bevel gear shaft, a sleeve seat is rotatably fitted on the right end of the sleeve, a compression spring is fixed between the right end face of the sleeve seat and the right end wall of the bevel gear cavity, the driven bevel gear is fixed to the left end of the sleeve, and the elastic force of the compression spring enables the driven bevel gear to always be able to mesh with the active bevel gear.

[0014] In which, a belt cavity is provided at the lower side of the wheel cavity, and a first motor fixedly connected to the main box body is provided at the lower side of the belt cavity, and the upper end wall of the belt cavity is rotatably matched with two screw shafts symmetrically with the annular rotating wheel as the center, and the upper side portion of the screw shaft extends upward to the outside of the main box body, and the lower side portion extends downward to the belt cavity, and the lower side portion of the screw shaft on the right side extends downward to be fixedly connected to the upper end surface of the first motor. The screw shafts on the left and right sides are fixed with pulleys located in the belt cavity, and the pulleys on the left and right sides are powered by belts, and the two screw shafts are connected to the lifting platform by threaded matching, and two front-and-rear symmetrical guide rods are fixed on the upper end surface of the main box body, and the two guide rods are slidably matched with the lifting platform, and the lifting platform can be driven to move upward or downward through the rotation of the screw shaft, so that the wire rope can be in a taut state when detecting different types of speed limiters.

[0015] The beneficial effects of the present invention are as follows: the present invention utilizes the rotating annular rotating wheel and the steel wire rope to drive the speed limiter to rotate, so as to simulate the process of driving the speed limiter to rotate by the speed limiter rope when the elevator is running, so that the structure of the present invention is relatively simpler than the current detection platform, and the volume is relatively small. The linear speed of the steel wire rope is detected by the second motor. At this time, the linear speed of the steel wire rope is the speed of simulating the operation of the car. When the linear speed of the steel wire rope exceeds the rated linear speed, it is observed whether the speed limiter can be started normally, and the time from the steel wire rope linear speed reaching the rated speed to the steel wire completely stopping is recorded, so as to calculate the reaction time of the speed limiter. When the speed limiter stops, the annular rotating wheel automatically stops rotating, so that the steel wire rope stops pulling the speed limiter, thereby minimizing the damage of the internal parts structure of the speed limiter during the detection process, so that the speed limiter after detection can be directly put into use after a simple inspection, thereby reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the appearance of the present invention;

[0017] Figure 2 It is a schematic diagram of the overall structure of an elevator speed limiter function test device of the present invention;

[0018] Figure 3 The present invention Figure 2 A partial enlarged schematic diagram of the middle annular runner component;

[0019] Figure 4 The present invention Figure 3 Schematic diagram of AA in the middle;

[0020] Figure 5 The present invention Figure 3 A partial enlarged schematic diagram of the magnetic latch component;

[0021] Figure 6 The present invention Figure 2 A partial enlarged schematic diagram of the middle slider component;

[0022] Figure 7 The present invention Figure 2 A partial enlarged schematic diagram of the middle speed measuring wheel component;

[0023] Figure 8 The present invention Figure 7 Schematic diagram of BB.

[0024] In the figure:

[0025] 10. Main box; 11. Lower through cavity; 12. Guide rod; 13. Speed ​​measuring wheel; 14. Upper through cavity; 15. Lifting platform; 16. Sliding block; 17. Ring wheel; 18. Wheel cavity; 19. First motor; 20. Belt; 21. Belt cavity; 22. Pulley; 23. Screw shaft; 24. Active wheel; 25. Second motor shaft; 26. Magnetic latch; 27. Second motor; 28. Limit cavity; 29. ​​Latch spring; 30. Electromagnet; 31. Latch Pin cavity; 32. contact switch; 33. guide wheel cavity; 34. guide wheel; 35. wire rope cavity; 36. slider spring; 37. guide wheel shaft; 38. slider cavity; 39. tachometer wheel cavity; 40. tachometer wheel shaft; 41. tachometer; 42. shaft seat cavity; 43. shaft seat spring; 44. compression spring; 45. shaft sleeve seat; 46. driven bevel gear; 47. shaft sleeve; 48. bevel gear cavity; 49. driven bevel gear shaft; 50. driving bevel gear; 51. shaft seat. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below with reference to the accompanying drawings:

[0027] Reference Figure 1-Figure 8 According to an embodiment of the present invention, an elevator speed limiter function test device comprises a main box 10, wherein a power assembly for providing the speed limiter with power required for detection is arranged in the main box 10, a switch assembly for cutting off power transmission is arranged on the upper side of the power assembly, a lifting platform 15 is arranged on the upper side of the main box 10, and a speed measuring assembly for detecting the linear speed of the speed limiter when the speed limiter is triggered is arranged in the lifting platform 15;

[0028] The power assembly includes an annular rotating wheel 17 disposed in the main housing 10, a driving rotating wheel 24 is rotatably matched in the annular rotating wheel 17, and six magnetic latches 26 are disposed between the driving rotating wheel 24 and the annular rotating wheel 17;

[0029] The switch assembly includes a slider 16 disposed in the main box 10, two left-right symmetrical guide wheels 34 are disposed in the slider 16, and contact switches 32 are disposed on both upper and lower sides of the slider 16;

[0030] The speed measuring assembly includes a speed measuring wheel 13 arranged in the lifting platform 15, a driving bevel gear 50 is arranged on the front side of the speed measuring wheel 13, a driven bevel gear 46 meshing with the driving bevel gear 50 is arranged on the right side of the driving bevel gear 50, and a speed meter 41 fixedly connected to the lifting platform 15 is arranged on the right side of the driven bevel gear 46.

[0031] Furthermore, a runner cavity 18 is provided in the main housing 10, and a second motor 27 fixedly connected to the main housing 10 is provided at the rear side of the runner cavity 18, a second motor shaft 25 is fixed to the front end face of the second motor 27, and the front part of the second motor shaft 25 extends forward into the runner cavity 18, the driving runner 24 is fixed to the front end of the second motor shaft 25, the annular runner 17 is located in the runner cavity 18, a steel wire rope is provided on the outer periphery of the annular runner 17, and a groove is provided on the outer periphery of the annular runner 17, so that the steel wire rope can always abut against the outer periphery of the annular runner 17, and the speed limiter can be driven to rotate through the steel wire rope by the rotation of the annular runner 17.

[0032] Furthermore, the annular rotating wheel 17 is provided with six limit cavities 28 distributed circumferentially with the second motor shaft 25 as the center, and the limit cavities 28 are opened inwardly. The active rotating wheel 24 is provided with six pin cavities 31 distributed circumferentially with the second motor shaft 25 as the center, and the pin cavities 31 are opened outwardly. The six pin cavities 31 are slidably fitted with magnetic pins 26, and the bottom walls of the six pin cavities 31 are fixed with electromagnets 30, and pin springs 29 are fixed between the six electromagnets 30 and the six magnetic pins 26. The magnetic pins 26 can slide inwards and outwards by utilizing the gain and loss of electricity of the electromagnets 30 and the elastic force of the pin springs 29, thereby realizing the clutch between the active rotating wheel 24 and the annular rotating wheel 17.

[0033] Furthermore, a slider cavity 38 is provided on the upper side of the wheel cavity 18, and two lower through cavities 11 with left-right symmetry and opening upward are connected on the upper side of the wheel cavity 18. The lower through cavity 11 on the right side passes through the slider cavity 38, and the slider 16 is slidably connected with the slider cavity 38. A wire rope through cavity 35 is provided in the slider 16, and the left and right sides of the wire rope through cavity 35 are connected with guide wheel cavities 33. A guide wheel shaft 37 is fixed between the front and rear end walls of the two guide wheel cavities 33, and the guide wheels 34 on the left and right sides are respectively fixed to the corresponding side. On the guide wheel shaft 37, the wire rope passes between the guide wheels 34 on the left and right sides. The two guide wheels 34 are used to reduce the friction between the slider 16 and the wire rope. Slider springs 36 are fixed between the upper and lower end faces of the slider 16 and the upper and lower end walls of the slider cavity 38. The contact switch 32 is fixed to the right end wall of the slider cavity 38. The slider 16 is driven upward or downward by the steel wire, so that the slider 16 touches the upper contact switch 32 or the lower contact switch 32, thereby controlling the power gain and loss of the electromagnet 30.

[0034] Furthermore, the lifting platform 15 is provided with two upper through cavities 14 which pass through from top to bottom. A tachometer wheel cavity 39 is connected to the right side of the upper through cavity 14. An axle seat cavity 42 is provided on the front side of the tachometer wheel cavity 39. An axle seat 51 is slidably fitted in the axle seat cavity 42. A tachometer wheel axle 40 is rotatably fitted in the axle seat 51. The rear part of the tachometer wheel axle 40 extends rearward into the tachometer wheel cavity 39. The tachometer wheel 13 is fixed to the rear end of the tachometer wheel axle 40. A groove is provided on the outer periphery of the tachometer wheel 13 so that the steel wire rope can always abut against the outer periphery of the tachometer wheel 13. Axle seat springs 43 are fixed between the left and right end faces of the axle seat 51 and the left and right end walls of the axle seat cavity 42. By utilizing the elastic force of the axle seat springs 43 and the sliding of the axle seat 51 in the axle seat cavity 42, the tachometer wheel 13 can always be in close contact with the steel wire rope.

[0035] Furthermore, a bevel gear cavity 48 is provided on the front side of the shaft seat cavity 42, the front part of the speed measuring wheel shaft 40 extends forward into the bevel gear cavity 48, the active bevel gear 50 is fixed to the front end of the speed measuring wheel shaft 40, a driven bevel gear shaft 49 is fixed to the left end face of the speed meter 41, the speed meter 41 is used to detect the linear speed of the wire rope, the left part of the driven bevel gear shaft 49 extends to the left through the bevel gear cavity 48 to the left end wall of the bevel gear cavity 48, the driven bevel gear shaft 49 is slidably fitted with a shaft sleeve 47 located in the bevel gear cavity 48, the right end of the shaft sleeve 47 is rotatably fitted with a shaft sleeve seat 45, a compression spring 44 is fixed between the right end face of the shaft sleeve seat 45 and the right end wall of the bevel gear cavity 48, the driven bevel gear 46 is fixed to the left end of the shaft sleeve 47, and the elastic force of the compression spring 44 enables the driven bevel gear 46 to always be able to mesh with the active bevel gear 50.

[0036] Furthermore, a belt cavity 21 is provided at the lower side of the wheel cavity 18, and a first motor 19 fixedly connected to the main housing 10 is provided at the lower side of the belt cavity 21. Two screw shafts 23 symmetrically centered on the annular rotating wheel 17 are rotatably matched in the upper end wall of the belt cavity 21. The upper part of the screw shaft 23 extends upward to the outside of the main housing 10, and the lower part extends downward into the belt cavity 21. The lower part of the screw shaft 23 on the right side extends downward to be fixedly connected to the upper end surface of the first motor 19, and the screw shafts 23 on the left and right sides are fixed with the screw shafts 23 located at the The pulley 22 in the belt cavity 21 is dynamically matched with a belt 20 between the pulleys 22 on the left and right sides. The two screw shafts 23 are connected to the lifting platform 15 through threaded matching. Two front-to-back symmetrical guide rods 12 are fixed to the upper end surface of the main box body 10. The two guide rods 12 are slidably matched with the lifting platform 15. The guide rods 12 are used for sliding guidance of the lifting platform 15. The rotation of the screw shaft 23 can drive the lifting platform 15 to move upward or downward, so that the wire rope can be in a taut state when detecting different types of speed limiters.

[0037] An elevator speed limiter function test device of the present invention has the following working process:

[0038] When the present invention is in the initial state, the lower end surface of the lifting platform 15 abuts against the upper end surface of the main box body 10, the electromagnet 30 is in a de-energized state, the outer end of the magnetic latch 26 is located in the limit cavity 28, the latch spring 29 is in a relaxed state, the slider 16 is located in the middle position of the slider cavity 38, the slider spring 36 is in a relaxed state, the slider 16 is not in abutment with the contact switches 32 on the upper and lower sides, the axle seat 51 is located in the middle position of the axle seat cavity 42, the two axle seat springs 43 are both in a relaxed state, and the compression spring 44 is in a relaxed state.

[0039] The steel wire rope is passed through the annular rotating wheel 17, the lower through chambers 11 on the left and right sides, the steel wire rope through chambers 35 and the upper through chambers 14 on the left and right sides, and the guide wheels 34 on the left and right sides clamp the steel wire rope.

[0040] The contact switch 32 is a single-point switch. When the slider 16 touches the contact switch 32, the contact switch 32 is in a waiting state. When the slider 16 is out of contact with the contact switch 32, the contact switch 32 is in a triggered state.

[0041] The speed limiter to be tested is fixed on the upper end surface of the lifting platform 15, the wire rope is hung on the speed limiter rope pulley, and the first motor 19 is started to rotate the screw shaft 23 on the right side, thereby driving the pulley 22 on the right side to rotate, and the pulley 22 on the left side is driven to rotate by the belt 20, thereby causing the screw shaft 23 on the left side to rotate, thereby driving the lifting platform 15 to move upward, and then causing the speed limiter on the upper side of the lifting platform 15 to move upward together, until the wire rope is tightened, and then the first motor 19 is turned off.

[0042] During this process, the steel wire rope squeezes the tachometer wheel 13 to the right, so that the tachometer wheel axle 40 moves to the right, and then drives the axle seat 51 to move to the right, so that the axle seat spring 43 on the left is stretched and the axle seat spring 43 on the right is compressed. Under the action of the elastic force of the axle seat spring 43 on the right and the tension of the axle seat spring 43 on the left, the outer periphery of the tachometer wheel 13 is tightly abutted against the steel wire rope.

[0043] When the tachometer shaft 40 moves to the right, the active bevel gear 50 moves to the right along with the tachometer shaft 40 , thereby causing the driven bevel gear 46 to move to the right, thereby driving the sleeve 47 to move to the right, and then causing the sleeve seat 45 to move to the right, compressing the compression spring 44 .

[0044] At this time, the second motor 27 is started to drive the second motor shaft 25 to rotate forward, thereby making the active wheel 24 rotate forward, and under the action of the magnetic latch 26, the annular wheel 17 rotates forward along with the active wheel 24, thereby driving the speed measuring wheel 13 and the speed limiter to rotate forward together under the action of the wire rope.

[0045] At the same time, the right side of the wire rope moves downward, causing the guide wheel shaft 37 to rotate. Under the action of the friction between the guide wheel shaft 37 and the wire rope, the wire rope drives the guide wheel shaft 37 to move downward, so that the slider 16 overcomes the tension of the slider spring 36 on the upper side and the elastic force of the slider spring 36 on the lower side and moves downward until it touches the contact switch 32 on the lower side, and the contact switch 32 is in a state to be triggered.

[0046] During this period, the tachometer wheel 13 rotates to rotate the tachometer wheel shaft 40, thereby driving the tachometer wheel shaft 40 to rotate, and then the driven bevel gear 46 rotates, and then the shaft sleeve 47 rotates, and then the driven bevel gear shaft 49 rotates, and then the linear speed of the wire rope can be measured by the tachometer 41.

[0047] As the speed of the second motor 27 continues to increase, the linear speed of the wire rope gradually increases, thereby simulating the process of the car running out of control and overspeeding.

[0048] At this time, the speed of the speed limiter gradually increases with the wire rope speed.

[0049] If the speed limiter is triggered during the process of increasing the speed of the speed limiter, causing the speed limiter clamp to clamp the wire rope, the wire rope will stop moving instantly.

[0050] At this time, the slider 16 moves upward under the elastic force of the slider spring 36 on the lower side and the pulling force of the slider spring 36 on the upper side, and the slider 16 is instantly disengaged from the contact switch 32 on the lower side, and the contact switch 32 on the lower side is triggered, so that the six electromagnets 30 are started at the same time, and the six electromagnets 30 are energized to attract the corresponding magnetic pins 26, so that the six magnetic pins 26 overcome the elastic force of the corresponding pin springs 29 and move inward to the corresponding pin cavities 31, thereby causing idling between the active wheel 24 and the annular wheel 17, so that the annular wheel 17 no longer generates tension on the wire rope, thereby reducing the impact on the internal mechanism of the speed limiter.

[0051] Then, the second motor 27 is turned off to stop the driving wheel 24 from rotating. At the same time, the electromagnet 30 is turned off. The driving wheel 24 continues to rotate under the action of inertia, so that the magnetic latch 26 is re-engaged in the limit cavity 28 under the elastic force of the latch spring 29.

[0052] At this time, the wire rope linear velocity value measured by the speed meter 41 is recorded and compared with the rated trigger speed value of the speed limiter to determine whether the speed limiter meets the design requirements.

[0053] At the same time, the time from the linear speed of the wire rope reaching the rated speed to the time when the wire rope stops completely is used to analyze the sensitivity of the speed limiter.

[0054] If it is necessary to detect the performance of the speed limiter during reverse rotation, the speed limiter is restored to the initial state, and the second motor 27 is started in reverse. The remaining process is opposite to the above-mentioned motion process.

[0055] It will be clear to those skilled in the art that various modifications to the above embodiments may be made without departing from the overall spirit and concept of the present invention. All of these modifications fall within the scope of protection of the present invention. The protection scheme of the present invention shall be subject to the claims attached to the present invention.

Claims

1. An elevator speed limiter function test device, comprising a main box (10), characterized in that: A power assembly for providing the speed limiter with power required for detection is arranged in the main housing (10); a switch assembly for cutting off power transmission is arranged on the upper side of the power assembly; a lifting platform (15) is arranged on the upper side of the main housing (10); a speed measuring assembly for detecting the linear speed of the speed limiter when the speed limiter is triggered is arranged in the lifting platform (15); The power assembly comprises an annular rotating wheel (17) arranged in the main housing (10), a driving rotating wheel (24) rotatably matched in the annular rotating wheel (17), and six magnetic latches (26) are arranged between the driving rotating wheel (24) and the annular rotating wheel (17); The switch assembly comprises a slider (16) arranged in the main box (10), two left-right symmetrical guide wheels (34) are arranged in the slider (16), and contact switches (32) are arranged on both upper and lower sides of the slider (16); The speed measuring assembly comprises a speed measuring wheel (13) arranged in the lifting platform (15), a driving bevel gear (50) is arranged on the front side of the speed measuring wheel (13), a driven bevel gear (46) meshing with the driving bevel gear (50) is arranged on the right side of the driving bevel gear (50), and a speed meter (41) fixedly connected to the lifting platform (15) is arranged on the right side of the driven bevel gear (46).

2. An elevator speed limiter function test device according to claim 1, characterized in that: A wheel cavity (18) is provided in the main housing (10), a second motor (27) fixedly connected to the main housing (10) is provided at the rear side of the wheel cavity (18), a second motor shaft (25) is fixed to the front end surface of the second motor (27), a front part of the second motor shaft (25) extends forward into the wheel cavity (18), the driving wheel (24) is fixed to the front end of the second motor shaft (25), and the annular wheel (17) is located in the wheel cavity (18).

3. An elevator speed limiter function test device according to claim 2, characterized in that: The annular rotating wheel (17) is provided with six limiting cavities (28) distributed circumferentially with the second motor shaft (25) as the center, and the limiting cavities (28) are opened inwardly. The active rotating wheel (24) is provided with six bayonet cavities (31) distributed circumferentially with the second motor shaft (25) as the center, and the bayonet cavities (31) are opened outwardly. The six bayonet cavities (31) are all slidably fitted with magnetic bayonet pins (26), and the bottom walls of the six bayonet cavities (31) are all fixed with electromagnets (30), and bayonet springs (29) are fixed between the six electromagnets (30) and the six magnetic bayonet pins (26).

4. An elevator speed limiter function test device according to claim 2, characterized in that: A slider cavity (38) is provided on the upper side of the rotating wheel cavity (18). Two lower through cavities (11) which are symmetrical on the left and right and open upward are connected on the upper side of the rotating wheel cavity (18). The lower through cavity (11) on the right side passes through the slider cavity (38). The slider (16) is connected to the slider cavity (38) by sliding fit. A wire rope through cavity (35) which passes through the upper and lower sides is provided in the slider (16). The left and right sides of the wire rope through cavity (35) are connected to guide wheel cavities (33). A guide wheel shaft (37) is fixed between the front and rear end walls of the two guide wheel cavities (33). The guide wheels (34) on the left and right sides are respectively fixed to the guide wheel shaft (37) on the corresponding sides. Slider springs (36) are fixed between the upper and lower end surfaces of the slider (16) and the upper and lower end walls of the slider cavity (38). The contact switch (32) is fixed to the right end wall of the slider cavity (38).

5. An elevator speed limiter function test device according to claim 4, characterized in that: The lifting platform (15) is provided with two upper through cavities (14) which are connected vertically. A tachometer wheel cavity (39) is connected to the right side of the upper through cavity (14). An axle seat cavity (42) is provided in front of the tachometer wheel cavity (39). An axle seat (51) is slidably fitted in the axle seat cavity (42). A tachometer wheel axle (40) is rotatably fitted in the axle seat (51). The rear side of the tachometer wheel axle (40) extends backward into the tachometer wheel cavity (39). The tachometer wheel (13) is fixed to the rear end of the tachometer wheel axle (40). Axle seat springs (43) are fixed between the left and right end faces of the axle seat (51) and the left and right end walls of the axle seat cavity (42).

6. An elevator speed limiter function test device according to claim 5, characterized in that: A bevel gear cavity (48) is provided at the front side of the shaft seat cavity (42); the front side portion of the speed measuring wheel shaft (40) extends forward into the bevel gear cavity (48); the active bevel gear (50) is fixed to the front end of the speed measuring wheel shaft (40); a driven bevel gear shaft (49) is fixed to the left end face of the speed meter (41); the left side portion of the driven bevel gear shaft (49) extends to the left and passes through the bevel gear cavity (48) to the left end wall of the bevel gear cavity (48); a shaft sleeve (47) located in the bevel gear cavity (48) is slidably fitted on the driven bevel gear shaft (49); a shaft sleeve seat (45) is rotatably fitted at the right end of the shaft sleeve (47); a compression spring (44) is fixed between the right end face of the shaft sleeve seat (45) and the right end wall of the bevel gear cavity (48); and the driven bevel gear (46) is fixed to the left end of the shaft sleeve (47).

7. An elevator speed limiter function test device according to claim 5, characterized in that: A belt cavity (21) is provided at the lower side of the wheel cavity (18), and a first motor (19) fixedly connected to the main housing (10) is provided at the lower side of the belt cavity (21). Two screw shafts (23) symmetrically centered on the annular wheel (17) are rotatably engaged in the upper end wall of the belt cavity (21), and the upper side portion of the screw shaft (23) extends upward to the outside of the main housing (10), and the lower side portion extends downward to the inside of the belt cavity (21). The lower side portion of the screw shaft (23) on the right side extends downward to The first motor (19) is fixedly connected to the upper end surface, and the left and right screw shafts (23) are fixed with pulleys (22) located in the belt cavity (21), and the left and right pulleys (22) are dynamically matched with a belt (20), and the two screw shafts (23) are connected to the lifting platform (15) through threaded matching, and the upper end surface of the main box body (10) is fixed with two front-to-back symmetrical guide rods (12), and the two guide rods (12) are slidably matched with the lifting platform (15).

Images