A linked control type elevator speed limiter

Abstract

The present invention relates to a linkage-controlled elevator speed limiter, comprising a speed limiter support plate, a sheave and a brake disc fixed to the speed limiter support plate via a main shaft, a switch plate, a switch mechanism linked to the switch plate, and a centrifugal mechanism disposed on the sheave and moving with the sheave. The centrifugal mechanism contacts and presses the brake disc when the elevator stalls. The speed limiter also comprises a linkage plate, a linkage rod, a hook plate, and a rope clamp. The linkage plate is fixedly connected to the brake disc, the linkage rod is connected to the linkage plate, and the elevator wire rope passes through the rope clamp. One end of the hook plate is connected to the movable clamp of the rope clamp, and the other end is connected to the linkage rod. The linkage rod is simultaneously triggered when the elevator speed limiter is in a triggered action state, driving the hook plate to move and switching the working state of the rope clamp to clamping the wire rope. The overall structure of the present application is simple, small in size, and easy to arrange. At the same time, it is adapted to the action linkage during speed limiter braking, and has higher working stability and safety.

Description

Technical Field

[0001] The present invention relates to an elevator safety component, in particular to the field of elevator speed limiters, and in particular to a linked control type elevator speed limiter. Background Art

[0002] Elevators are widely used in our daily lives. To ensure safety and prevent injuries caused by overspeeding, elevator speed limiters are used as safety components to monitor elevator speeds. When an elevator overspeed fault occurs or when testing the elevator's linkage function, the speed limiter triggers. Furthermore, rope clamps are safety brake devices that can also act on the car, counterweight, wire rope system, or traction sheave for rope braking. However, existing rope clamps are complex, bulky, and require separate installation, making them inconvenient. Summary of the Invention

[0003] The object of the present invention is to provide a linkage control type elevator speed governor, which has a simple overall structure, a small volume, and is easy to arrange. At the same time, it is adapted to the action linkage during the speed governor braking, and has higher working stability and safety.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] The present invention provides a linkage-controlled elevator speed governor, the elevator speed governor comprising a speed governor support plate, a rope sheave fixed to the speed governor support plate by a main shaft, a brake disc arranged coaxially with the main shaft, a switch plate rotatably arranged on the speed governor support plate, a switch mechanism linked to the switch plate, a centrifugal mechanism arranged on the rope sheave and moving with the rope sheave, the centrifugal mechanism contacting and pressing the brake disc when the elevator stalls, and further comprising a linkage plate, a linkage rod, a hook plate and a rope clamp, the linkage plate being fixedly connected to the brake disc, the linkage rod being connected to the linkage plate, the steel wire rope of the elevator passing through the rope clamp, one end of the hook plate being connected to the movable clamp of the rope clamp, and the other end being connected to the linkage rod, wherein the linkage rod is simultaneously triggered when the elevator speed governor is in a triggered action state, driving the hook plate to move and switching the working state of the rope clamp to clamping the steel wire rope.

[0006] Regarding the above technical solution, the applicant has further optimization measures.

[0007] Optionally, a U-shaped plate is vertically fixed on the inner side of the speed limiter bracket plate, and positioning holes are opened on the upper and lower arms of the U-shaped plate. The lower end of the connecting rod passes through the two positioning holes on the U-shaped plate and is connected to the other end of the hook plate.

[0008] Furthermore, a blocking piece is fixed on the connecting rod between the upper and lower arms of the U-shaped plate, a buffer spring is provided between the blocking piece and the lower arm of the U-shaped plate, and the buffer spring is sleeved on the connecting rod.

[0009] Optionally, the rope clamp includes a fixed seat, a fixed clamp, a movable clamp, and a compression spring. The fixed seat is fixedly connected to the speed limiter bracket plate, the fixed clamp is locked and fixed in the fixed seat, and the movable clamp is slidably arranged in the fixed seat. The wire rope passes between the fixed clamp and the movable clamp, one side of the movable clamp faces the fixed clamp, and the compression spring is arranged between the other side opposite to the fixed seat, and the compression spring is used to push the movable clamp toward the direction of the fixed clamp.

[0010] Furthermore, the other end of the hook plate is a U-shaped notch, and the other end of the hook plate is clamped in the connecting rod.

[0011] Optionally, a latch is fixedly connected to the bottom of the connecting rod, and a limiting plate is provided on the connecting rod above the latch. The U-shaped notch at the other end of the hook plate is clamped in the position of the connecting rod between the latch and the limiting plate. A return spring is provided between the limiting plate and the outer surface of the lower arm of the U-shaped plate, and the return spring is sleeved on the connecting rod.

[0012] Optionally, the switching mechanism includes a safety caliper brake switch mechanism, which is arranged on the outside of the speed limiter bracket plate and is set at a height at the bottom position of the connecting rod. A through groove parallel to the connecting rod is opened on the speed limiter bracket plate, and a sliding piece is arranged in the through groove. The inner side of the sliding piece is fixedly connected to the connecting rod, and the outer side extends out of the speed limiter bracket plate and abuts against the movable end of the safety caliper brake switch mechanism.

[0013] Furthermore, the safety clamp brake switch mechanism includes a contact switch, a connecting frame and a guide wheel. The connecting frame is arranged on the outside of the contact of the contact switch through a rotating pin. The guide wheel is rotatably fixed to the end of the connecting frame through a rotating shaft. The bottom of the guide wheel abuts against the upper part of the sliding plate.

[0014] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0015] The linkage-controlled elevator speed limiter of the present invention triggers the action of the rope clamp by means of a linkage rod that is linked to the brake disc of the speed limiter. The overall structure is simple and compact, making it easy to arrange in a limited space. The structure that is directly linked to the brake disc makes the overall operation stable and reliable, and can achieve a lower failure rate than conventional elevator speed limiters. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0017] Figure 1 2 is a schematic diagram of the overall structure of a linked control type elevator speed governor in a packaged state according to an embodiment of the present invention;

[0018] Figure 2 1. This is a schematic structural diagram of a linkage-controlled elevator speed governor according to one embodiment of the present invention, with the governor support plate partially removed, to illustrate the internal main structure.

[0019] Figure 3 for Figure 2 A partial enlarged view of the linked control type elevator speed governor is shown;

[0020] Figure 4 for Figure 2 The main structural diagram of the linked control type elevator speed governor is shown;

[0021] Figure 5 for Figure 4 The AA-axis cross-sectional structure diagram of the linked control type elevator speed governor is shown;

[0022] Figure 6 for Figure 4 An axial side view of a cross section taken along line BB of a linked control type elevator speed governor is shown;

[0023] Figure 7 for Figure 6 A partial enlarged view of the linked control type elevator speed governor is shown;

[0024] Figure 8 The present invention is a schematic structural diagram of a rope clamp in a linked control type elevator speed governor according to an embodiment of the present invention in a non-rope clamping state.

[0025] The description of the accompanying drawings is as follows:

[0026] 1. Speed ​​governor bracket plate, 11. Pulley, 12. Wire rope, 13. Brake disc, 14. Switch plate, 15. Main brake switch mechanism, 16. Safety caliper brake switch mechanism, 17. Centrifugal mechanism, 18. Main shaft;

[0027] 2. Linking piece;

[0028] 3. Connecting rod, 31. U-shaped plate, 32. Blocking plate, 33. Bayonet, 34. Limiting plate, 35. Sliding plate;

[0029] 41. Contact switch, 42. Connecting frame, 43. Guide wheel;

[0030] 5. Hook plate, 51. Limiting groove, 52. U-shaped notch;

[0031] 6. Rope clamp, 61. Fixed seat, 62. Fixed chuck, 63. Movable chuck, 64. Waist-shaped hole, 65. Pin, 66. Guide rod, 67. Guide slot, 68. Limiting column, 69. Threaded hole at the movable chuck;

[0032] 71. Placement rack, 72. Reset rod, 73. Positioning plate, 74. Positioning hole;

[0033] 81. Brake drum, 82. Friction plate, 83. Disc spring, 84. Pull rod pin, 85. Limit plate, 86. Copper plate, 87. Retaining ring, 88. Limit hole, 89. Brake sleeve. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0037] This embodiment provides a linkage control type elevator speed limiter, such as Figures 1 to 8As shown, the elevator speed governor includes a speed governor bracket plate 1, a sheave 11 fixed to the speed governor bracket plate 1 by a main shaft 18, a brake disc 13 arranged coaxially with the main shaft 18, a switch plate 14 rotatably arranged on the speed governor bracket plate 1, a switch mechanism linked to the switch plate 14, and a centrifugal mechanism 17 arranged on the sheave 11 and moving with the sheave 11. The centrifugal mechanism 17 contacts and presses the brake disc 13 when the elevator stalls. It also includes a connecting plate 2, a connecting rod 3, a hook plate 5 and a rope clamp 6. The connecting plate 2 is fixedly connected to the brake disc 13, and the connecting rod 3 is connected to the connecting plate 2. The end of the connecting plate 2 can be connected to the connecting rod 3 in the form of a U-shaped fork hook, a limit slot, etc. The connecting plate 2 can vertically lift the connecting rod 3, but eliminates lateral movement, and is limited to the connection method that can achieve this function.

[0038] The elevator wire rope 12 passes through the rope clamp 6. One end of the hook plate 5 is connected to the movable clamp 63 of the rope clamp 6, and the other end is connected to the connecting rod 3. The connecting rod 3 is triggered at the same time when the elevator speed limiter is triggered, driving the hook plate 5 to move and switching the working state of the rope clamp 6 to clamp the wire rope 12.

[0039] For example, when the elevator stalls, the centrifugal mechanism 17 is actuated to cause the brake disc 13 to start braking. The brake disc 13 rotates, thereby rotating the connecting plate 2, driving the connecting rod 3 to pull upward, thereby pulling the hook plate 5 upward. When the hook plate 5 is unhooked from the component that defines its position, the movable clamp 63 can be released instantly. Under the elastic force of the compression spring, the compression spring pushes the movable clamp 63, causing the movable clamp 63 to move toward the fixed clamp 62 and maintain a clamped state, thereby clamping the wire rope 12 between the movable clamp 63 and the fixed clamp 62. The overall structure is simple and the volume is small, which is conducive to the realization of miniaturization of the equipment.

[0040] A U-shaped plate 31 is vertically fixed to the inner side of the speed limiter bracket plate 1, and positioning holes are opened on the upper and lower arms of the U-shaped plate 31. The lower end of the connecting rod 3 passes through the two positioning holes on the U-shaped plate 31 and is connected to the other end of the hook plate 5. A baffle 32 is fixed to the connecting rod 3 between the upper and lower arms of the U-shaped plate 31, and a buffer spring is provided between the baffle 32 and the lower arm of the U-shaped plate 31, and the buffer spring is sleeved on the connecting rod 3.

[0041] The rope clamp 6 includes a fixed base 61, a fixed clamp 62, a movable clamp 63, and a compression spring. The fixed base 61 is fixedly connected to the speed limiter bracket plate 1, the fixed clamp 62 is locked and fixed in the fixed base 61, and the movable clamp 63 is slidably arranged in the fixed base 61. The wire rope 12 passes between the fixed clamp 62 and the movable clamp 63. One side of the movable clamp 63 faces the fixed clamp 62, and the compression spring is arranged between the other side and the fixed base 61. The compression spring is used to push the movable clamp 63 toward the direction of the fixed clamp 62.

[0042] The fixed seat 61 is provided with a waist-shaped hole 64. To ensure the stable movement of the movable chuck 63, waist-shaped holes 64 are provided on both the front and rear side panels of the fixed seat 61, and each side panel is provided with two upper and lower parallel waist-shaped holes 64. The front and rear sides of the movable chuck 63 are fixed to the waist-shaped holes 64 by two pins 65, respectively. Each pin 65 slides with the corresponding waist-shaped hole 64, and the movable chuck 63 can translate along the waist-shaped hole 64. A guide rod 66 is also provided in the fixed seat 61. The guide rod 66 is provided between the other side of the movable chuck 63 and the right side panel of the fixed seat 61. A guide sleeve is provided on the right side panel. One end of the guide rod 66 is fixedly connected to the other side of the movable chuck 63, and the other end passes through the guide sleeve and slides with the guide sleeve. The compression spring is sleeved on the guide rod 66 and is located between the movable chuck 63 and the right side panel of the fixed seat 61.

[0043] The hook plate 5 is disposed on the outside of the fixing seat 61. A guide slot 67 is provided on the front or rear side plate of the fixing seat 61. One end of the hook plate 5 is fixedly connected to the movable clamp 63 via a connecting pin passing through the guide slot 67. The other end of the hook plate 5 is connected to the linkage rod 3. A limiting post 68 is provided on the outside of the fixing seat 61. The limiting post 68 and the hook plate 5 are disposed on the same side. A limiting slot 51 is provided on the lower edge of the hook plate 5. The limiting slot 51 can be fixedly engaged with the limiting post 68. A guard plate is also provided on the outside of the limiting post 68 and is fastened to the fixing seat 61 by bolts.

[0044] Specifically, the limiting groove 51 at the lower edge of the hook plate 5 is U-shaped, and there is a height difference between the lower edges of the main body of the hook plate 5 on the left and right sides of the limiting groove 51, wherein the lower edge of the left side of the hook plate 5 is lower than the lower edge of the right side of the hook plate 5.

[0045] In order to facilitate the hook plate 5 to fall back accurately when resetting so that the limiting groove 51 can accurately clamp the limiting column 68, the right side of the limiting groove 51 at the hook plate 5 is a smooth arc transition and the left side is a vertical wall.

[0046] A threaded hole 69 is provided on the side surface of the other side of the movable chuck 63, and a corresponding through-hole is provided on the right side plate of the fixing seat 61 at the same height as the threaded hole 69. A placement bracket 71 is vertically fixed to the outer side of the speed governor bracket plate 1, and a reset rod 72 is inserted into the placement bracket 71. The end of the reset rod 72 has an external thread that matches the threaded hole 69 in the movable chuck 63. When resetting, the reset rod 72 can be directly inserted through the through-hole on the right side plate of the fixing seat 61 and then screwed into the movable chuck 63. Similar to the transmission relationship between a lead screw and a transmission pair, the movable chuck 63 can be pulled out and away from the wire rope 12. When the linkage rod 3 returns, the hook plate 5 can be smoothly lowered, thereby causing the hook plate 5 to fall back and return to its original position.

[0047] In order to facilitate the insertion of the reset rod 72 into the speed governor for operation, a positioning plate 73 is provided on the outer side of the speed governor bracket plate 1 located on the side, that is, on the outer side of the speed governor bracket plate 1 close to the outer end of the hook plate 5. A positioning hole 74 is opened on the positioning plate 73 corresponding to the through hole on the right side plate of the fixing seat 61 and the threaded hole 69 at the movable clamp 63. These three holes are located at the same horizontal height. After the reset rod 72 is inserted through the positioning hole 74 and then passes through the through hole on the right side plate of the fixing seat 61, according to the two-point-one-line principle, it can be accurately inserted into the threaded hole 69 at the movable clamp 63 for operation.

[0048] The other end of the hook plate 5 is a U-shaped notch 52. The other end of the hook plate 5 is stuck in the connecting rod 3 and the lower part rests on the upper part of the latch 33, so that the other end of the hook plate 5 can be accurately stuck to the connecting rod 3. At the same time, when the hook plate 5 is pulled up by the connecting rod 3, it can also avoid the connecting rod 3 from pulling up smoothly.

[0049] A latch pin 33 is fixedly connected to the bottom of the connecting rod 3, and a limiting plate 34 is provided on the connecting rod 3 above the latch pin 33. The U-shaped notch 52 at the other end of the hook plate 5 is stuck in the position of the connecting rod 3 between the latch pin 33 and the limiting plate 34. A return spring is provided between the limiting plate 34 and the outer surface of the lower arm of the U-shaped plate 31, and the return spring is sleeved on the connecting rod 3.

[0050] Generally speaking, the switch mechanism includes a main brake switch mechanism 15 for controlling the traction machine to stop and a safety caliper brake switch mechanism 16 for controlling the safety caliper to brake. The safety caliper brake switch mechanism 16 is arranged on the outside of the speed limiter bracket plate 1 and is arranged at the bottom position of the connecting rod 3. A through groove parallel to the connecting rod 3 is opened on the speed limiter bracket plate 1, and a sliding piece 35 is arranged in the through groove. The inner side of the sliding piece 35 is fixedly connected to the connecting rod 3, and the outer side extends out of the speed limiter bracket plate 1 and abuts the movable end of the safety caliper brake switch mechanism 16.

[0051] The safety clamp brake switch mechanism 16 includes a contact switch 41, a connecting frame 42 and a guide wheel 43. The connecting frame 42 is arranged on the outside of the contact of the contact switch 41 through a rotating pin. The guide wheel 43 is rotatably fixed to the end of the connecting frame 42 through a rotating shaft. The bottom of the guide wheel 43 abuts against the upper part of the sliding plate 35.

[0052] In addition, the brake disc 13 includes a brake drum 81 and a brake sleeve 89 which are arranged concentrically with the main shaft 18. The brake sleeve 89 is fixed to the brake drum 81 by docking and snapping. The brake drum 81 covers the surface of the brake sleeve 89, thereby forming an accommodation cavity inside the two. A friction plate 82 and a disc spring 83 are arranged in the accommodation cavity. The disc spring 83 pushes the friction plate 82 so that the friction plate is close to the brake sleeve 89. A pull rod pin 84 is welded on the outer surface of the brake drum 81. The outer end of the pull rod pin 84 is fixedly connected to the connecting plate 2. A limit plate 85 is provided on the outer surface of the brake drum 81. A copper plate 86 and a retaining ring 87 are arranged in sequence from the inside to the outside between the brake drum 81 and the limit plate 85. The inner surface of the copper plate 86 contacts the end surface of the brake sleeve 89 and the brake drum 81, and the outer surface of the copper plate 86 contacts the inner surface of the retaining ring 87. The retaining ring 87 is arranged between the copper plate 86 and the inner surface of the connecting plate 2, and can block and protect the connecting plate 2.

[0053] The centrifugal mechanism 17 adopts a single-flap or double-flap structure. The structure of this part of the centrifugal mechanism 17 is an existing structure and is not the focus of protection of this application, so it is not described in detail. When the elevator stalls, the high-speed rotation of the rope sheave 11 generates a large centrifugal force, which causes the flinging piece of the centrifugal mechanism 17 to be thrown out. After being thrown out, the flinging piece can contact the striking plate of the main brake switch mechanism 15 and trigger the operation of the main brake switch mechanism 15. At the same time, the flinging piece drives the contact wheel connected thereto to move toward the brake disc 13. After the contact wheel contacts the brake sleeve of the brake disc 13, since the centrifugal mechanism 17 is arranged on the rope sheave 11 and moves with the rope sheave 11, the high-speed rotating rope sheave 11 will drive the brake sleeve 89 to rotate together, and the disc spring 83 and the friction plate 82 are arranged in the placement cavity formed between the brake drum 81 and the brake sleeve 89 and maintain a tensioned state. After the initial rotation, the brake sleeve 89 will drive the brake drum 81 to rotate together, thereby rotating the connecting piece 2 and driving the connecting rod 3 to pull upward, so that the hook plate 5 is lifted upward. However, the brake drum 81 will subsequently limit its rotation range due to the action of the limit plate 85. Only the rotating sleeve 89 keeps rotating and contacts the friction plate 82 for friction and braking during the stall control process. That is to say, when the elevator stalls, the centrifugal mechanism 17 initially triggers the action of the brake disc 13, and the brake drum 81 of the brake sleeve 13 rotates together with the brake sleeve 89. Then, under the restriction of the limit plate 85, the brake drum 81 stops rotating, and only the brake disc 89 continues to rotate and realizes friction braking during the contact process with the friction plate 82.

[0054] Limit plate 85 is fixedly connected to the outer bearing sleeve of main shaft 18. This means that limit plate 85 remains fixed and motionless during operation of the elevator and its speed governor. Limit hole 88 is defined on limit plate 85, corresponding to the position of tie rod pin 84. This serves to limit the rotational range of tie rod pin 84, thereby limiting the rotation amplitude of brake drum 81. This prevents excessive rotation of linkage plate 2 and linkage rod 3, which could lead to malfunctions. Specifically, limit hole 88 is an arc-shaped hole with an arc of 8 to 15 degrees.

[0055] In summary, the linkage-controlled elevator speed limiter of the present application triggers the action of the rope clamp 6 through the linkage rod 3 that is in linkage with the speed limiter brake disc 13. The overall structure is simple and the volume is small, which is convenient for arrangement in a limited space. The structure that is directly linked with the brake disc 13 makes the overall operation stable and reliable, and can achieve a lower failure rate than that of a conventional elevator speed limiter.

[0056] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable people familiar with this technology to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A linkage-controlled elevator speed governor, comprising a speed governor support plate, a sheave fixed to the speed governor support plate via a main shaft, a brake disc coaxially arranged with the main shaft, a switch plate rotatably arranged on the speed governor support plate, a switch mechanism linked to the switch plate, and a centrifugal mechanism arranged on the sheave and moving with the sheave, wherein the centrifugal mechanism contacts and presses the brake disc when the elevator stalls, and is characterized in that: The elevator also includes a connecting plate, a connecting rod, a hook plate, and a rope clamp, wherein the connecting plate is fixedly connected to the brake disc, the connecting rod is connected to the connecting plate, the elevator wire rope passes through the rope clamp, one end of the hook plate is connected to the movable clamp of the rope clamp, and the other end is connected to the connecting rod, wherein the connecting rod is triggered at the same time when the elevator speed limiter is triggered, driving the hook plate to move and switching the working state of the rope clamp to clamp the wire rope; The rope clamp includes a fixed base, a fixed chuck, a movable chuck, and a compression spring. The fixed base is fixedly connected to the speed limiter bracket plate, the fixed chuck is locked and fixed in the fixed base, the movable chuck is slidably arranged in the fixed base, the wire rope passes between the fixed chuck and the movable chuck, one side of the movable chuck faces the fixed chuck, and the compression spring is arranged between the other side opposite to the fixed base, and the compression spring is used to push the movable chuck toward the fixed chuck; A U-shaped plate is vertically fixed to the inner side of the speed limiter bracket plate, and positioning holes are opened on the upper and lower arms of the U-shaped plate. The lower end of the connecting rod passes through the two positioning holes on the U-shaped plate and is connected to the other end of the hook plate; A blocking piece is fixed on the connecting rod between the upper and lower arms of the U-shaped plate, and a buffer spring is provided between the blocking piece and the lower arm of the U-shaped plate, and the buffer spring is sleeved on the connecting rod; The other end of the hook plate is a U-shaped notch, and the other end of the hook plate is clamped in the connecting rod; The bottom of the connecting rod is fixedly connected to a bayonet pin, and a limiting plate is provided on the connecting rod above the bayonet pin. The U-shaped notch at the other end of the hook plate is stuck in the position of the connecting rod between the bayonet pin and the limiting plate. A return spring is provided between the limiting plate and the outer surface of the lower arm of the U-shaped plate, and the return spring is sleeved on the connecting rod.

2. The interlocking control type elevator speed governor according to claim 1, characterized in that: The switch mechanism includes a safety caliper brake switch mechanism, which is arranged on the outside of the speed limiter bracket plate and is set at a height located at the bottom position of the connecting rod. A through groove parallel to the connecting rod is opened on the speed limiter bracket plate, and a sliding piece is arranged in the through groove. The inner side of the sliding piece is fixedly connected to the connecting rod, and the outer side extends out of the speed limiter bracket plate and abuts the movable end of the safety caliper brake switch mechanism.

3. The linked control type elevator speed governor according to claim 2, characterized in that: The safety clamp brake switch mechanism includes a contact switch, a connecting frame and a guide wheel. The connecting frame is arranged on the outside of the contact of the contact switch through a rotating pin. The guide wheel is rotatably fixed to the end of the connecting frame through a rotating shaft. The bottom of the guide wheel abuts against the upper part of the sliding plate.

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