Elevator speed governor with replaceable speed measuring assembly

Abstract

The utility model discloses an elevator speed limiter with a replaceable speed measuring assembly, and belongs to the technical field of elevator speed limiters. Comprising a base, a support, a rope wheel rotationally connected with the support, a tensioning rope hung on the rope wheel, a speed measuring assembly connected with the rope wheel in a meshed mode, a switch assembly installed on the support, a rope clamping assembly installed on the base and a stay wire flexible shaft assembly between the speed measuring assembly and the switch assembly and between the speed measuring assembly and the rope clamping assembly. The speed measuring assembly is detachably connected with the support, so that the speed measuring assembly is detachable, separable and replaceable, and then when the action speed of the elevator speed limiter is verified and debugged, only the speed measuring assembly needs to be detached for verification and debugging or the speed measuring assembly which is verified to be qualified needs to be directly replaced. The elevator speed governor does not need to be integrally disassembled or the elevator speed governor tensioning rope does not need to be separated from the rope wheel to be checked and debugged; the method has the advantages of simple operation, short downtime and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of elevator speed limiters, and in particular relates to an elevator speed limiter with a replaceable speed measuring component. Background Art

[0002] The elevator speed limiter is a very important core safety device in the elevator, which is used to implement overspeed protection that may occur during elevator operation. When the elevator is running, the elevator speed limiter monitors the elevator speed in real time. When the running speed exceeds the speed setting value of the elevator speed limiter, the overspeed switch (elevator electrical safety switch, belonging to the elevator safety circuit, the same below) is activated to disconnect the elevator safety circuit to stop the elevator and clamp the tensioning rope to pull the elevator safety clamp to stop the elevator car on the elevator guide rail to avoid casualties and equipment damage.

[0003] Current elevator regulations require that for speed limiters with a service life of no more than 15 years, the speed limiter action speed should be checked every 2 years; for speed limiters with a service life of more than 15 years, the speed limiter action speed should be checked once a year. Therefore, maintaining the correct and reliable action speed of the elevator speed limiter is a very important prerequisite for ensuring the safe operation of the elevator.

[0004] In the prior art, the elevator speed limiter sheave is installed on the speed limiter bracket, and the tensioning (steel wire) rope suspended on the sheave is directly connected to the elevator car. The friction between the tensioning rope and the speed limiter sheave drives the sheave to rotate, and the centrifugal block, connecting rod, and adjusting spring attached to the sheave constitute the speed measuring system. When the elevator running speed exceeds the speed setting value of the speed limiter, the centrifugal block respectively activates the overspeed switch and clamps the tensioning rope to pull the elevator safety clamp, thereby realizing the elevator shutdown and elevator car braking functions. In this structure, the speed measuring system relies on the rotation of the sheave, and the speed measuring system parts are connected to the sheave, which cannot be disassembled, separated, or replaced. When checking and debugging the elevator speed limiter action speed, the elevator speed limiter must be disassembled as a whole or the tensioning rope must be separated from the elevator speed limiter sheave, which makes the operation difficult. Especially in the case of installation space restrictions, installation location restrictions, installation errors (for example, the speed limiter base is fixed by welding), etc., which may cause difficult disassembly, destructive disassembly, or even impossible disassembly; some operators are even unwilling to disassemble and perform verification due to the difficulty of disassembly and the long operation time, resulting in false verification. On the other hand, after the elevator speed limiter is disassembled, the elevator will not be able to continue to operate; it must wait for the verification to be completed and reinstalled before it can be put into operation. Factors such as difficult disassembly, false verification, long verification cycle, and long downtime will directly lead to the elevator speed limiter being unable to perform action speed verification according to the prescribed cycle, posing a huge safety hazard to the elevator operation.

[0005] Therefore, there is a need for an elevator speed limiter that can quickly complete verification and debugging to ensure that its operating speed meets the prescribed requirements and eliminate potential safety hazards in elevator operation. Utility Model Content

[0006] In response to one or more of the above defects or improvement needs in the prior art, the utility model provides a detachable, separable and replaceable speed measuring component. When it is necessary to calibrate and debug the action speed of the elevator speed limiter, it is only necessary to remove the speed measuring component for calibration and debugging or directly replace it with a qualified speed measuring component that has passed the calibration.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the utility model to solve its technical problems is as follows: a speed measuring assembly replaceable elevator speed limiter, comprising a base, a bracket, a rope pulley rotatably connected to the bracket, a tensioning rope suspended on the rope pulley, a speed measuring assembly for measuring the rotational speed of the rope pulley, a switch assembly installed on the bracket, a rope clamping assembly installed on the base, and a wire pulling flexible shaft assembly connecting the speed measuring assembly with the switch assembly and the rope clamping assembly; characterized in that the speed measuring assembly is meshedly connected to the rope pulley, and the speed measuring assembly is detachably connected to the bracket, so that the speed measuring assembly can be separated from the bracket and can be calibrated, debugged and replaced.

[0008] The bracket is mounted on the base, the rope pulley is mounted on the bracket through a wheel shaft and a bearing, the rope pulley is rotatably connected to the bracket, the tension rope is suspended on the rope pulley, and the tension rope is connected to the elevator car.

[0009] As a further improvement of the present invention, the speed measuring assembly includes a transmission wheel, a transmission shaft, a speed measuring wheel, a first speed measuring block, a first rotating plate, a second speed measuring block, a second rotating plate, a connecting rod, an adjusting spring, a first trigger latch, a second trigger latch and a support, the first rotating plate and the second rotating plate are respectively rotatably connected to the speed measuring wheel, the first speed measuring block is fixedly connected to the first rotating plate, the second speed measuring block is fixedly connected to the second rotating plate, the two ends of the connecting rod are respectively rotatably connected to the first rotating plate and the second rotating plate, one end of the adjusting spring is fixedly connected to the speed measuring wheel, the other end of the spring is connected to the second rotating plate, the first trigger latch and the second trigger latch are rotatably connected to the support, the transmission wheel and the speed measuring wheel are fixed on the transmission shaft, the transmission shaft is rotatably connected to the support, and the support is detachably connected to the support so that the support and the support are separable.

[0010] As a further improvement of the present invention, the outer edge of the rope wheel is provided with a toothed structure, and the outer edge of the transmission wheel is also provided with a toothed structure accordingly, so that the transmission wheel is toothedly connected with the rope wheel.

[0011] As a further improvement of the utility model, the switch assembly includes an overspeed switch and an overspeed switch action latch, the overspeed switch is installed on the bracket, one end of the overspeed switch action latch is rotatably connected to the bracket, and the other end is connected to the second pull wire flexible shaft.

[0012] As a further improvement of the present invention, the rope clamping assembly includes a first rope clamping block, a second rope clamping block and a rope clamping action latch, the first rope clamping block and the second rope clamping block are respectively movably connected to the base and are arranged on both sides of the tensioning rope; one end of the rope clamping action latch is rotatably connected to the bracket, and a hook is provided at the lower part thereof, and a hook is also provided at the upper part of the second rope clamping block, so that the second rope clamping block can be hung up by hanging the two hooks with each other; the rope clamping action latch is connected to the first pull wire flexible shaft.

[0013] As a further improvement of the utility model, the wire pull shaft assembly includes a first wire pull shaft and a second wire pull shaft, the first wire pull shaft is detachably connected to the first trigger latch, and the second wire pull shaft is detachably connected to the second trigger latch, so that the first wire pull shaft and the second wire pull shaft are separable from the speed measuring assembly; the other end of the second wire pull shaft is connected to the switch action latch, and the other end of the first wire pull shaft is connected to the rope clamping action latch.

[0014] As a further improvement of the utility model, the end of the transmission shaft may be directly provided with a toothed structure, so that the transmission shaft is directly meshed and connected with the rope wheel, without configuring the transmission wheel.

[0015] As a further improvement of the present invention, the base and the bracket can be integrally formed.

[0016] The above-mentioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0017] In general, the above technical solution conceived by the utility model has the following beneficial effects compared with the prior art:

[0018] (1) The speed measuring assembly replaceable elevator speed governor of the utility model is connected to the elevator car through a tension rope and suspended on a rope pulley, converting the up and down movement of the elevator car into the rotational movement of the rope pulley; the rope pulley is meshed with the transmission wheel or transmission shaft in the speed measuring assembly, which is further converted into the rotational movement of the speed measuring wheel, thereby realizing real-time monitoring of the elevator running speed;

[0019] (2) The utility model provides an elevator speed limiter with a replaceable speed measuring component. When the speed measuring component detects in real time that the elevator running speed exceeds the speed setting value, the speed measuring component generates a trigger action and transmits it to the switch component and the rope clamp component through the pull-wire flexible shaft component, respectively actuating the overspeed switch to disconnect the elevator safety circuit to stop the elevator and clamping the tensioning rope to pull the elevator safety clamp to stop the elevator car on the elevator guide rail, thereby avoiding casualties and equipment damage accidents;

[0020] (3) The speed measuring component of the elevator speed limiter with replaceable speed measuring component of the utility model is relatively independent of the elevator speed limiter, and the speed measuring function is completely completed by the speed measuring component. Therefore, when checking and debugging the elevator speed limiter, it is only necessary to dismantle the speed measuring component for verification or directly replace the speed measuring component that has passed the verification and meets the verification cycle requirements. There is no need to dismantle the elevator speed limiter as a whole or separate the elevator speed limiter tensioning rope from the rope wheel. It has the advantages of simple operation and short downtime.

[0021] (4) The utility model of the elevator speed governor with a replaceable speed measuring component can be transformed into an elevator speed governor with a replaceable speed measuring component by appropriately modifying the relevant parts of the existing elevator speed governor and installing the speed measuring component, thereby solving the defects of the existing elevator speed governor. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a front view of the structure of an elevator speed limiter with replaceable speed measuring components in an embodiment of the utility model;

[0023] Figure 2 It is a left view of the structure of an elevator speed limiter with replaceable speed measuring components in an embodiment of the utility model;

[0024] Figure 3 This is a front view of the structure of a speed measuring assembly of an elevator speed limiter with a replaceable speed measuring assembly in an embodiment of the utility model;

[0025] Figure 4 It is a left view of the structure of the speed measuring assembly of the elevator speed limiter with replaceable speed measuring assembly in the embodiment of the utility model;

[0026] Figure 5 It is a schematic diagram of the structure of the elevator speed limiter switch assembly with replaceable speed measuring assembly in the embodiment of the utility model, the left side is the main view, and the right side is the left view;

[0027] Figure 6 It is a schematic diagram of the structure of the elevator speed governor rope clamp assembly with a replaceable speed measuring assembly in the embodiment of the utility model, the left side is the main view, and the right side is the left view;

[0028] Figure 7 It is a schematic structural diagram of an improved embodiment of the speed measuring component in the embodiment of the utility model.

[0029] In all the accompanying drawings, the same figure marks represent the same technical features, specifically: 1. tensioning rope; 2. base; 3. bracket; 4. rope clamping assembly; 401. first rope clamping block; 402. second rope clamping block; 403. hook; 404. rope clamping action latch; 5. rope pulley; 6. switch assembly; 601. overspeed switch; 602. overspeed switch handle; 603. switch action latch; 7. wire pulley flexible shaft assembly; 701. first wire pulley flexible shaft; 702. second wire pulley flexible shaft; 8. speed measuring assembly; 801. support; 802. speed measuring wheel; 803. first rotating plate; 804. first trigger latch; 805. connecting rod; 806. second trigger latch; 807. second speed measuring block; 808. second rotating plate; 809. transmission wheel; 810. adjustment spring; 811. transmission shaft; 812. first speed measuring block. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number, order or sequence of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] The speed measuring component replaceable elevator speed limiter in the preferred embodiment of the utility model is as follows Figure 1 As shown. It includes a base and a bracket installed on the base, and a rope pulley installed on the bracket through a shaft and a bearing and connected to the bracket for rotation. The tension rope is suspended on the rope pulley and connected to the elevator car; it also includes a speed measuring component installed on the bracket and meshed with the rope pulley, a switch component installed on the bracket, a rope clamp component installed on the base, and a pull-wire flexible shaft component between the speed measuring component, the switch component, and the rope clamp component. The speed measuring component is used to monitor the running speed of the elevator in real time. When it is detected that the running speed of the elevator exceeds the set value, a trigger action is generated. Through the pull-wire flexible shaft component between the speed measuring component, the switch component, and the rope clamp component, the trigger action is transmitted to the action latch in the switch component and the rope clamp component respectively, so that the overspeed switch is actuated and the tension rope is clamped to pull the elevator safety clamp, thereby stopping the elevator or stopping the elevator car.

[0036] The following combination Figures 1 to 6 An embodiment of the utility model is described.

[0037] The replaceable elevator speed limiter bracket 3 is installed on the base 2, the rope pulley 5 is installed on the bracket 3 through the shaft and the bearing, the rope pulley 5 is rotatably connected with the bracket 3, the outer edge of the rope pulley 5 is processed with a rope groove and a tooth structure, the tensioning rope 1 is suspended in the rope groove of the rope pulley 5 and is connected to the elevator car.

[0038] The speed measuring assembly 8 is installed on the bracket 3 through the support 801, and the support 801 is detachably connected to the bracket 3; the transmission shaft 811 is installed on the support 801 through a bearing, and the transmission shaft 811 is rotatably connected to the support 801, and the transmission wheel 809 and the speed measuring wheel 802 are fixed on the transmission shaft 811; the transmission wheel 809 is meshed with the rope wheel 5; the first rotating plate 803 and the second rotating plate 808 are installed on the speed measuring wheel 802 through the shaft and the bearing, and the first rotating plate 803 and the second rotating plate 808 are connected to the speed measuring wheel 80 2 rotational connection; the first speed measuring block 812 and the second speed measuring block 807 are respectively welded and fixed to one end of the first rotating plate 803 and the second rotating plate 808; the connecting rod 805 is rotationally connected to the first rotating plate 803 and the second rotating plate 808 through a shaft and a bearing; one end of the adjusting spring 810 is connected to the second rotating plate 808, and the other end is fixed to the speed measuring wheel 802; the first trigger latch 804 and the second trigger latch 806 are respectively detachably connected to the first wire pull soft shaft 701 and the second wire pull soft shaft 702.

[0039] The switch assembly 6 comprises an overspeed switch 601 and a switch action latch 603. The overspeed switch 601 is mounted on the bracket 3; the switch action latch 603 is mounted on the bracket 3 through a shaft and a bearing, and is rotatably connected to the bracket 3.

[0040] The rope clamping assembly 4 includes a first rope clamping block 401, a second rope clamping block 402 and a rope clamping action latch 404. The first rope clamping block 401 and the second rope clamping block 402 are respectively arranged on both sides of the tensioning rope 1 and are movably connected to the base 2; wherein the first rope clamping block 401 is movably mounted on the base 2 through a spring (the spring is arranged to satisfy the requirement of maintaining a certain clamping force after the tensioning rope 1 is clamped); the second rope clamping block 402 is movably mounted on the base 2 through a fixed block and two rods; a hook 403 is processed on the upper part of the second rope clamping block 402; the rope clamping action latch 404 is mounted on the bracket 3 through a shaft and a bearing, and is rotatably connected to the bracket 3; a hook structure is also arranged on the lower part of the rope clamping action latch 404, which is mutually hung with the hook 403 on the upper part of the second rope clamping block 402, so that the second rope clamping block 402 is hung.

[0041] The wire-pulling flexible shaft assembly 7 includes a first wire-pulling flexible shaft 701 and a second wire-pulling flexible shaft 702. One end of the first wire-pulling flexible shaft 701 and the second wire-pulling flexible shaft 702 are detachably connected to the first trigger latch 804 and the second trigger latch 806 in the speed measuring assembly 8, respectively (as described above). The other end of the second wire-pulling flexible shaft 702 is connected to the switch action latch 603 in the switch assembly 6; the other end of the first wire-pulling flexible shaft 701 is connected to the rope clamping action latch 404 in the rope clamping assembly 4; the wire-pulling flexible shaft assembly 7 is fixed on the bracket 3.

[0042] When the elevator is running, the elevator car moves up and down, and the tension rope 1 connected to the elevator car also moves up and down with the elevator car. The tension rope 1 is suspended in the rope groove of the rope wheel 5, and the friction between the tension rope 1 and the rope groove of the rope wheel 5 drives the rope wheel 5 to rotate, which converts the up and down movement of the elevator car into the rotational movement of the rope wheel 5; the running speed of the elevator car is the same as the rotational linear speed of the rope wheel 5; through the meshing connection between the rope wheel 5 and the transmission wheel 809, the rotational movement of the rope wheel 5 is transmitted to the transmission wheel 809; the speed measuring wheel 802 and the transmission wheel 809 are both fixed on the transmission shaft 811, and the speed measuring wheel 802 and the transmission wheel 809 rotate synchronously; the running speed of the elevator is converted into the rotational speed of the speed measuring wheel 802. When the speed measuring wheel 802 rotates, the first speed measuring block 812, the first rotating plate 803, the connecting rod 805, the second speed measuring block 807, the second rotating plate 808, and the adjusting spring 810 all rotate with the speed measuring wheel 802. The first speed measuring block 812, the first rotating plate 803, the connecting rod 805, the second speed measuring block 807, the second rotating plate 808, and the adjusting spring 810 form a four-bar linkage, which is based on the first and second rotating plates (803, 808) and the fixed points of the speed measuring wheel 802 and the connecting rod 805 to constrain the mutual movement. According to the centrifugal principle, when the speed measuring wheel 802 rotates, the first speed measuring block 812 and the second speed measuring block 807 tend to be thrown outward. The greater the rotation speed, the greater the throwing amplitude. Therefore, when the elevator running speed exceeds the speed setting value, the speed measuring block (812 or 807) will overcome the elastic force of the adjusting spring 810 and touch the first trigger latch 804 and the second trigger latch 806; the first trigger latch 804 and the second trigger latch 806 move to the right, generating a triggering action; this triggering action is transmitted to the switch assembly 6 and the rope clamp assembly 4 by the first pull-wire flexible shaft 701 connected to the first trigger latch 804 and the second pull-wire flexible shaft 702 connected to the second trigger latch 806, respectively. That is, the speed measuring assembly 8 monitors the elevator running speed in real time and generates a triggering action when it detects that the elevator is running overspeed. The adjusting spring 810 is used to adjust the speed setting value, and the triggering sequence is determined by the structural dimensions and installation position design of the corresponding parts.

[0043] When the second pull-wire flexible shaft 702 receives the trigger action of the second trigger latch 806, it pulls the switch action latch 603 to the right, touches the overspeed switch handle 602, and activates the overspeed switch 601; thereby disconnecting the elevator safety circuit and stopping the elevator.

[0044] When the first pull-wire flexible shaft 701 receives the triggering action of the first trigger latch 804, it pulls the rope clamping action latch 404 to the right, so that the hook 403 disposed on the upper part of the second rope clamping block 402 is disengaged from the hook on the lower part of the rope clamping action latch 404. Under the action of gravity, the second rope clamping block 402 falls and clamps the tensioning rope 1 together with the first rope clamping block 401, thereby pulling the elevator safety clamp and stopping the elevator car on the elevator guide rail.

[0045] Further preferably, in another embodiment of the present invention, the transmission wheel 809 in the speed measuring assembly 8 may not be provided, and the end of the transmission shaft 811 in the speed measuring assembly 8 may be directly processed into a tooth shape according to the tooth shape parameters of the rope wheel 5, and directly meshed with the rope wheel 5. Figure 7 .

[0046] Further preferably, through appropriate design, the base 2 and the bracket 3 can be integrally formed.

[0047] In order to improve the utilization rate of the elevator speed limiter based on the existing technology, the elevator speed limiter based on the existing technology can be appropriately modified, irrelevant parts attached to the speed limiter rope wheel can be removed, the outer edge of the rope wheel can be processed into a toothed structure, the action mechanism of the overspeed switch and the rope clamping element can be modified or replaced, and a speed measuring component can be added. Then, the elevator speed limiter based on the existing technology can be transformed into an elevator speed limiter with a replaceable speed measuring component, thereby improving resource utilization and solving the defects of the existing elevator speed limiter.

[0048] It is easy for those skilled in the art to understand that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An elevator speed limiter with a replaceable speed measuring assembly, comprising a base, a bracket, a rope pulley rotatably connected to the bracket, a tension rope suspended on the rope pulley, a speed measuring assembly for measuring the rotation speed of the rope pulley, a switch assembly mounted on the bracket, a rope clamp assembly mounted on the base, and a wire pull flexible shaft assembly connecting the speed measuring assembly with the switch assembly and the rope clamp assembly; characterized in that: The speed measuring assembly is meshedly connected to the rope wheel, and the speed measuring assembly is detachably connected to the bracket, so that the speed measuring assembly can be separated from the bracket and can be checked, debugged and replaced.

2. The elevator speed governor with replaceable speed measuring assembly according to claim 1, characterized in that: The speed measuring assembly includes a transmission wheel, a transmission shaft, a speed measuring wheel, a first speed measuring block, a first rotating plate, a second speed measuring block, a second rotating plate, a connecting rod, an adjusting spring, a first trigger latch, a second trigger latch and a support, wherein the first rotating plate and the second rotating plate are respectively rotatably connected to the speed measuring wheel, the first speed measuring block is fixedly connected to the first rotating plate, the second speed measuring block is fixedly connected to the second rotating plate, the two ends of the connecting rod are respectively rotatably connected to the first rotating plate and the second rotating plate, one end of the adjusting spring is fixedly connected to the speed measuring wheel, the other end of the spring is connected to the second rotating plate, the first trigger latch and the second trigger latch are rotatably connected to the support, the transmission wheel and the speed measuring wheel are fixed on the transmission shaft, the transmission shaft is rotatably connected to the support, and the support is detachably connected to the support so that the support and the support are separable.

3. The elevator speed governor with replaceable speed measuring assembly according to claim 2 is characterized in that: The outer edge of the rope wheel is provided with a toothed structure, and the outer edge of the transmission wheel is also provided with a toothed structure accordingly, so that the transmission wheel is toothedly connected with the rope wheel.

4. The elevator speed governor with replaceable speed measuring assembly according to claim 2 or 3, characterized in that: The switch assembly comprises an overspeed switch and a switch action latch. The overspeed switch is arranged on the bracket. One end of the overspeed switch action latch is rotatably connected to the bracket.

5. The elevator speed governor with replaceable speed measuring assembly according to claim 4 is characterized in that: The rope clamping assembly includes a first rope clamping block, a second rope clamping block and a rope clamping action latch. The first rope clamping block and the second rope clamping block are respectively movably connected to the base and are arranged on both sides of the tensioning rope. One end of the rope clamping action latch is rotatably connected to the bracket, and a hook is provided at the lower part. The second rope clamping block is also provided at the upper part, so that the second rope clamping block can be hung up by hanging the two hooks together.

6. The elevator speed governor with replaceable speed measuring assembly according to claim 5, characterized in that: The wire pull shaft assembly includes a first wire pull shaft and a second wire pull shaft, the first wire pull shaft is detachably connected to the first trigger latch, and the second wire pull shaft is detachably connected to the second trigger latch, so that the first wire pull shaft and the second wire pull shaft are separable from the speed measuring assembly; the other end of the second wire pull shaft is connected to the switch action latch, and the other end of the first wire pull shaft is connected to the rope clamping action latch.

7. The elevator speed governor with replaceable speed measuring assembly according to claim 2 or 3, characterized in that: The end of the transmission shaft may also be directly provided with a toothed structure, so that the transmission shaft is directly toothed and connected with the rope wheel without configuring the transmission wheel.

8. The elevator speed governor with replaceable speed measuring assembly according to any one of claims 1 to 3, characterized in that: The base and the bracket can be integrally formed.

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