Elevator speed limiter

Abstract

The invention discloses an elevator speed limiter which comprises a mounting base, a front mounting frame and a rear mounting frame are arranged on the mounting base, an extension spring and a spring box are mounted on the rear mounting frame, an electromagnetic valve is further connected to the rear mounting frame, and a speed limiter wheel is arranged between the front mounting frame and the rear mounting frame. A shock absorber and a brake are further arranged between the front mounting frame and the rear mounting frame, the shock absorber is fixedly connected to the brake through a pin, a lower connector of the shock absorber abuts against the speed governor wheel, a cleaning assembly is further arranged on the mounting base and used for cleaning the interior of a rope groove of the speed governor wheel, and the cleaning assembly comprises a cleaning frame, a driven wheel and a brush plate assembly. A scraper extending into the rope groove is arranged on one side of the cleaning frame in an upward extending mode, the driven wheel is matched with the speed limiter wheel, and the brush plate assembly is provided with bristles extending into the rope groove. Vibration impact of a speed governor wheel can be effectively absorbed, the damping effect of the speed governor is improved, meanwhile, a rope groove of the speed governor is cleaned, and the accident that a safety protection switch of the speed governor is triggered or a rope is derailed and falls off due to excessive accumulation of oil dirt is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator safety, and in particular to an elevator speed limiter. Background Art

[0002] The elevator speed limiter is one of the safety control components in the elevator safety protection system. When the elevator is running, no matter what the reason, the car is overspeeding, or even in danger of falling, and all other safety protection devices do not work, the speed limiter and the safety clamp will work together to stop the elevator car.

[0003] After a long period of operation, the speed limiter wheel of a traditional elevator is often affected by dirt and wear, which affects the normal operation of the elevator. The current cleaning method usually requires shutdown maintenance and requires professional personnel to clean and maintain it, which is not only time-consuming and labor-intensive, but also has limited effects. In addition, the rubber ring on the shock absorber of the existing elevator speed limiter is easily worn and broken, and stuck on the speed limiter wheel to brake it, causing elevator safety accidents. Summary of the invention

[0004] In order to solve the above problems, the present invention proposes an innovative elevator speed limiter design, which combines the functions of automatically cleaning the speed limiter wheel and improving the shock absorption effect. By installing a cleaning device at the bottom of the speed limiter wheel, the dirt or debris on the speed limiter wheel can be cleaned in time. At the same time, the present invention introduces a new shock absorption structure to improve the shock absorption effect of the speed limiter, making the elevator run more stable and safe.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides an elevator speed governor, comprising a mounting base, wherein a mounting front frame and a mounting rear frame are arranged on the mounting base, a tension spring and a spring box are arranged on the mounting rear frame, a solenoid valve is also connected to the mounting rear frame, a speed governor wheel is arranged between the mounting front frame and the mounting rear frame, a shock absorber and a brake are also arranged between the mounting front frame and the mounting rear frame, the shock absorber is fixedly connected to the brake by a pin, a lower joint of the shock absorber abuts against the speed governor wheel, a cleaning assembly is also arranged on the mounting base for cleaning the inside of a rope groove of the speed governor wheel, the cleaning assembly comprises a cleaning frame, a driven wheel and a brush plate assembly, a scraper extending into the rope groove is upwardly extended on one side of the cleaning frame, the driven wheel cooperates with the speed governor wheel, and the brush plate assembly is provided with bristles extending into the rope groove.

[0006] Furthermore, one end of the tension spring is fixed on the mounting rear frame, and the other end is connected to the brake plate, and the spring box is fixed on the mounting rear frame by screws.

[0007] Furthermore, the solenoid valve is connected to the mounting rear frame via a connecting plate to drive the brake plate to move.

[0008] Furthermore, two bearings are installed in the speed limiter wheel, and the speed limiter wheel is installed between the front mounting frame and the rear mounting frame through a guide shaft.

[0009] Furthermore, the shock absorber includes an upper joint, a main bolt, a round nut, a compression spring, a locking nut and a lower joint, one end of the main bolt is inserted into the recessed hole of the upper joint and can move a certain distance in the recessed hole of the upper joint, and the other end of the main bolt is screwed into the screw hole of the lower joint and fixedly connected to the lower joint.

[0010] Furthermore, the main bolt is also provided with a locking nut, which is tightly pressed against the lower joint to lock the main bolt and the lower joint, and the external thread of the upper joint is provided with a round nut.

[0011] Furthermore, a compression spring is sleeved on the main bolt, one end of the compression spring abuts against the lower joint, and the other end abuts against the round nut.

[0012] Furthermore, the brake includes a trigger plate, a brake plate, a bearing sleeve, a bearing, a washer, a connecting shaft, and a pin. The trigger plate and the brake are connected together by screws, the washer is clamped on the bearing sleeve for limiting, the brake is fixed to the shock absorber by a pin, and the connecting shaft installs the brake between the front mounting frame and the rear mounting frame.

[0013] Furthermore, the driven wheel is installed in the middle of the cleaning frame, and a speed limiter wheel matching groove for pressing and contacting with the speed limiter wheel is arranged on the driven wheel, and an annular groove and a groove are arranged in the middle of the driven wheel.

[0014] Furthermore, the brush plate assembly includes a swing shaft rotatably installed inside the cleaning frame, a support rod is installed upwardly from the middle of the swing shaft, bristles are installed on the support rod and extend upward to the interior of the speed limiter wheel, torsion springs for driving the rotation are also provided at both ends of the swing shaft, a shift block is provided downwardly from the middle of the swing shaft, the shift block extends into the groove of the driven wheel, and slides in or out of different grooves as the driven wheel rotates. Beneficial Effects

[0015] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects: The invention installs a novel shock-absorbing structure on the speed limiter, thereby preventing the existing speed limiter rubber ring from being easily worn and broken, being stuck on the speed limiter wheel to brake it, and causing elevator safety accidents, thereby improving the shock-absorbing effect of the speed limiter and making the elevator run more smoothly and safely. At the same time, a cleaning component is provided at the bottom of the speed limiter to timely clean dirt or debris on the speed limiter wheel, so that the speed limiter is kept clean at all times, and excessive accumulation of oil and dirt is avoided to trigger the safety protection switch of the speed limiter or cause the rope derailment and falling accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the elevator speed limiter of the present invention; Figure 2 It is a side view of the elevator speed limiter of the present invention; Figure 3 It is a rear view of the elevator speed governor of the present invention; Figure 4 This is a schematic diagram of installing the rear frame in the present invention; Figure 5 It is the structural diagram of the speed limiter wheel in the present invention; Figure 6 It is a structural diagram of the shock absorber in the present invention; Figure 7 This is a structural diagram of the brake in the present invention; Figure 8 It is a schematic diagram of the cleaning component in the present invention; Fig. 9 It is a schematic diagram of the driven wheel in the present invention; Fig.10 This is a structural diagram of the brush plate assembly in the present invention.

[0017] The accompanying drawings are described as follows: 1- front frame installation, 3- solenoid valve, 5- base installation, 8- spring box, 9- connecting plate, 10- rear frame installation, 11- tension spring; 2-speed limiter wheel, 21-bearing, 22-guide shaft; 7- shock absorber, 71- upper joint, 72- main bolt, 73- round nut, 74- compression spring, 75- locking nut, 76- lower joint; 4-brake, 41-connecting shaft, 42-bearing, 43-trigger plate, 44-brake plate, 45-washer, 46-bearing sleeve, 47-pin; 6-cleaning assembly, 61-cleaning frame, 62-scraper, 63-driven wheel, 6301-speed limiter wheel matching groove, 6302-annular groove, 6303-groove, 64-brush plate assembly, 641-bristles, 644-swing shaft, 643-torsion spring, 642-support rod, 645-shift block. DETAILED DESCRIPTION

[0018] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0019] A specific embodiment 1 of the elevator speed limiter of the present invention is as follows Figures 1 to 10As shown, it includes a mounting base 5, on which a front mounting frame 1 and a rear mounting frame 10 are arranged, on which a tension spring 11 and a spring box 8 are installed, and on which a solenoid valve 3 is also connected, and between which a speed limiter wheel 2 is arranged, and between which a shock absorber 7 and a brake 4 are arranged, and the shock absorber 7 is fixedly connected to the brake 4 by a pin, and the lower joint 76 of the shock absorber 7 is against the speed limiter wheel 2, so that A cleaning assembly 6 is also provided on the mounting base 5 for cleaning the inside of the rope groove of the speed limiter wheel 2. The cleaning assembly 6 includes a cleaning frame 61, a driven wheel 63 and a brush plate assembly 64. A scraper 62 extending into the rope groove is extended upward from one side of the cleaning frame 61. The driven wheel 63 cooperates with the speed limiter wheel 2. The brush plate assembly 64 is provided with bristles 641 extending into the rope groove. The wheel groove passes through the scraper 62 and the brush plate assembly 64 in turn, and the oil stains that the scraper 62 cannot scrape off can be further cleaned.

[0020] In the present invention, one end of the tension spring 11 is fixed on the mounting rear frame 10, and the other end is connected to the brake plate 44, which effectively reduces the vibration of the brake 4. The spring box 8 is fixed on the mounting rear frame 10 by screws, and the solenoid valve 3 is connected to the mounting rear frame 10 by a connecting plate 9. When the elevator is overspeeding, the solenoid valve 3 is actuated to drive the brake 4 to move downward and get stuck on the speed limiter wheel 2, so that the speed limiter wheel 2 stops moving and triggers safety protection. Two bearings 21 are installed in the speed limiter wheel 2, and the speed limiter wheel 2 is installed on the mounting frame through a guide shaft 22; In the present invention, the shock absorber 7 includes an upper joint 71, a main bolt 72, a round nut 73, a compression spring 74, a locking nut 75 and a lower joint 76. One end of the main bolt 72 is inserted into the concave hole of the upper joint 71 and can move a certain distance in the concave hole of the upper joint 71. The other end of the main bolt 72 is screwed into the screw hole of the lower joint 76 and is fixedly connected to the lower joint 76. The main bolt 72 is also provided with a locking nut 75, which is tightly pressed against the lower joint 76 to lock the main nut 72 with the lower joint 76. The external thread of the upper joint 71 is provided with The round nut 73, the main body bolt 72 is sleeved with a compression spring 74, one end of the compression spring 74 abuts on the lower joint 76, and the other end abuts on the round nut 73, the locking nut 75 can adjust the relative position of the main body bolt 72 and the lower joint 76, and the round nut 75 can adjust its relative position with the upper joint 71, so as to fine-tune the length of the compression spring 74, that is, to adjust the shock absorbing effect of the shock absorber 7, when the lower joint 76 is squeezed by the speed limiter wheel 2, the main body bolt 72 penetrates into the concave hole of the upper joint 71, and then the compression spring 74 is compressed to play a shock absorbing role.

[0021] In the present invention, the brake 4 includes a trigger plate 43, a brake plate 44, a bearing sleeve 46, a bearing 42, a washer 45, a connecting shaft 41, and a pin 47. The trigger plate 43 and the brake 44 are connected together by screws, the washer is clamped on the bearing sleeve 46 for limiting, the brake 4 is fixedly connected to the shock absorber 7 by the pin 47, and the connecting shaft 41 installs the brake 4 between the front frame 1 and the rear frame 10.

[0022] In the present invention, the driven wheel 63 is installed in the middle of the cleaning frame 61, and a speed limiter wheel matching groove 6301 for pressing and contacting the speed limiter wheel 2 is provided on the driven wheel 63. The speed limiter wheel 2 drives the driven wheel 63 to move, thereby further cleaning the speed limiter wheel groove. An annular groove 6302 and a groove 6303 are provided in the middle of the driven wheel 63. The brush plate assembly 64 includes a swing shaft 644 rotatably installed inside the cleaning frame 61, and a support rod 642 is installed upward in the middle of the swing shaft 644 to support Brushes 641 are installed on the rod 642 and extend upward to the inside of the speed limiter wheel 2. Torsion springs 643 are also provided at both ends of the swing shaft 644 to drive it to rotate. A shift block 645 is provided downward in the middle of the swing shaft 644. The shift block 645 extends into the groove 6303 of the driven wheel 63. As the driven wheel 63 rotates, the shift block 645 slides in or out of different grooves 6303, driving the support rod 644 to swing to different degrees, so that the brushes 641 can more comprehensively clean the oil stains inside the speed limiter wheel groove.

[0023] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. An elevator speed governor, characterized in that: The invention comprises a mounting base (5), wherein a front mounting frame (1) and a rear mounting frame (10) are arranged on the mounting base (5), a tension spring (11) and a spring box (8) are installed on the rear mounting frame (10), a solenoid valve (3) is also connected to the rear mounting frame (10), a speed limiter wheel (2) is arranged between the front mounting frame (1) and the rear mounting frame (10), a shock absorber (7) and a brake (4) are also arranged between the front mounting frame (1) and the rear mounting frame (10), the shock absorber (7) is fixedly connected to the brake (4) by a pin, and the shock absorber (7) is fixedly connected to the brake (4) by a pin. The lower joint (76) of the vibrator (7) abuts against the speed limiter wheel (2). The mounting base (5) is further provided with a cleaning assembly (6) for cleaning the interior of the rope groove of the speed limiter wheel (2). The cleaning assembly (6) comprises a cleaning frame (61), a driven wheel (63) and a brush plate assembly (64). One side of the cleaning frame (61) is provided with a scraper (62) extending into the rope groove, the driven wheel (63) cooperates with the speed limiter wheel (2), and the brush plate assembly (64) is provided with bristles (641) extending into the rope groove.

2. An elevator speed governor according to claim 1, characterized in that: One end of the tension spring (11) is fixed to the mounting rear frame (10), and the other end is connected to the brake plate (44); the spring box (8) is fixed to the mounting rear frame (10) by screws.

3. An elevator speed governor according to claim 2, characterized in that: The solenoid valve (3) is connected to the mounting rear frame (10) via a connecting plate (9) and is used to drive the brake plate (4) to move.

4. An elevator speed governor according to claim 3, characterized in that: Two bearings (21) are installed in the speed limiter wheel (2), and the speed limiter wheel (2) is installed between the front mounting frame (1) and the rear mounting frame (10) via a guide shaft (22).

5. An elevator speed governor according to claim 4, characterized in that: The shock absorber comprises an upper joint (71), a main bolt (72), a round nut (73), a compression spring (74), a locking nut (75) and a lower joint (76); one end of the main bolt (72) is inserted into a concave hole of the upper joint (71) and can move a certain distance in the concave hole of the upper joint (71); the other end of the main bolt (72) is screwed into a screw hole of the lower joint (76) and is fixedly connected to the lower joint (76).

6. An elevator speed governor according to claim 5, characterized in that: The main body bolt (72) is also provided with a locking nut (75), which is tightly pressed against the lower joint (76) to lock the main body bolt (72) and the lower joint (76), and the external thread of the upper joint (71) is provided with a round nut (73).

7. An elevator speed governor according to claim 6, characterized in that: A compression spring (74) is sleeved on the main body bolt (72), one end of the compression spring (74) abuts against the lower joint (76), and the other end abuts against the round nut (73).

8. An elevator speed governor according to claim 7, characterized in that: The brake (4) comprises a trigger plate (43), a brake plate (44), a bearing sleeve (46), a bearing (42), a washer (45), a connecting shaft (41), and a pin (47); the trigger plate (43) and the brake plate (44) are connected together by screws; the washer (45) is clamped on the bearing sleeve (46) for limiting; the brake (4) is fixedly connected to the shock absorber (7) by the pin (47); and the connecting shaft (41) installs the brake (4) between the front mounting frame (1) and the rear mounting frame (10).

9. An elevator speed governor according to claim 8, characterized in that: The driven wheel (63) is installed in the middle of the cleaning frame (61), and a speed limiter wheel matching groove (6301) for pressing and contacting the speed limiter wheel (2) is provided on the driven wheel (63), and an annular groove (6302) and a groove (6303) are provided in the middle of the driven wheel (63).

10. An elevator speed governor according to claim 9, characterized in that: The brush plate assembly (64) comprises a swing shaft (644) rotatably mounted inside the cleaning frame (61); a support rod (642) is mounted upwardly at the middle of the swing shaft (642); bristles (641) are mounted on the support rod (642) and extend upwardly into the interior of the speed limiter wheel (2); torsion springs (643) for driving the swing shaft (644) to rotate are also arranged at both ends of the swing shaft (644); a shifting block (645) is arranged downwardly at the middle of the swing shaft (644); the shifting block (645) extends into a groove (6303) of the driven wheel (63) and slides into or out of different grooves (6303) as the driven wheel (63) rotates.

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