An elevator speed governor calibration bracket with a buffer mechanism

Abstract

This utility model discloses an elevator speed governor calibration bracket with a buffer mechanism, relating to the field of elevator speed governor calibration technology. The utility model includes a speed governor and a steel wire rope wound around the speed governor. A bracket is provided outside the speed governor, and the bracket further includes: a buffer section disposed within the bracket; a pull wire section located at the upper end of the bracket; the buffer section includes two buffer components, both located outside the speed governor; and a limiting component located outside the speed governor; the buffer component includes a connecting block disposed outside the speed governor. This utility model, by incorporating a buffer section, solves the problem in existing technologies where the steel wire rope is often clamped directly with pliers and then the pliers are allowed to fall directly onto the speed governor or bracket. This not only easily causes a hard impact on the parts but also makes it easy for the pliers to lift, causing the steel wire rope to loosen, thus affecting the preparation for calibration work.

Description

Technical Field

[0001] This utility model relates to the field of elevator speed governor calibration technology, specifically to an elevator speed governor calibration bracket with a buffer mechanism. Background Technology

[0002] As a vertical transportation device, safety is paramount for elevators. Their safety systems include brakes, safety clamps, and the speed governor is a key component that monitors the elevator's operating speed. When the speed exceeds the limit, the safety clamp is triggered to prevent a fall or overshoot. To ensure the reliability of the speed governor, it needs to be calibrated regularly. During calibration, the steel cable connecting it to the elevator car must be disconnected to avoid affecting the car or causing uneven stress on the steel cable. The calibration bracket is specifically designed for this scenario. It uses a stable structure to fix the disconnected steel cable, preventing it from shaking, tangling, or sagging, ensuring a safe and orderly calibration process. It is an indispensable auxiliary device in the speed governor calibration operation.

[0003] However, in the process of using existing calibration brackets, the steel wire rope is often clamped directly with pliers, and then the pliers are placed directly on the speed limiter or bracket. This not only easily causes hard impact on the parts, but the pliers are also prone to lifting up, causing the steel wire rope to loosen, thus affecting the preparation of calibration work. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides an elevator speed governor calibration bracket with a buffer mechanism to solve the problem that in the existing technology, the steel wire rope is often clamped directly with pliers and then the pliers are placed directly on the speed governor or bracket. This not only easily causes hard impact on the parts, but also the pliers are easy to lift up, causing the steel wire rope to loosen, thus affecting the preparation of the calibration work.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An elevator speed governor calibration bracket with a buffer mechanism includes a speed governor and a steel wire rope wound around the speed governor. A bracket is provided outside the speed governor. The bracket further includes: a buffer section disposed within the bracket; a pull wire section located at the upper end of the bracket; the buffer section includes two buffer assemblies, both located outside the speed governor; and a limiting assembly located outside the speed governor. Each buffer assembly includes a connecting block 1 disposed outside the speed governor, with a connecting block 2 slidably connected to the inner wall of the connecting block 1. Two springs are fixedly connected to the bottom inner wall of the connecting block 2. The top of each spring is fixedly connected to the connecting block. A limiting component is provided inside the connecting block. The two buffer components are mirror images of each other, and the two springs are mirror images of each other. The limiting component includes a limiting plate fixedly connected to the inner wall of the connecting block. A limiting block is fixedly connected to the inner wall of the connecting block. The outer wall of the limiting plate is slidably connected to the limiting block. The limiting block is an inverted C-shaped block. Buffering is achieved through the sliding cooperation of the connecting blocks 1 and 2 and the elastic action of the spring. At the same time, the sliding connection between the limiting plate and the inverted C-shaped limiting block limits the buffer stroke. The two mirror images of the buffer components together form symmetrical buffer protection for the speed limiter.

[0007] Preferably, the cable pull section includes a hook assembly disposed above the speed limiter; and two sliding assemblies, both of which are mounted on a bracket and are mirror images of each other.

[0008] Preferably, the limiting component includes two clamps disposed on the wire rope, two limiting grooves are formed on each of the two connecting blocks, two limiting frames are disposed on several of the limiting grooves, two limiting rods are fixedly connected to the inner wall of the bracket, and the two limiting rods pass through the two connecting blocks. The inner walls of the two connecting blocks are slidably connected to the two limiting rods. The two clamps are mirror images of each other and are used to clamp the wire rope. The two limiting frames are mirror images of each other and are adapted to several limiting grooves. The two limiting rods are mirror images of each other. By using the two mirror images of the clamps to clamp the wire rope, the two mirror images of the limiting frames adapted to the limiting grooves on the connecting blocks are used for limiting, and the two mirror images of the limiting rods passing through the inner wall of the bracket guide the sliding of the connecting blocks, thus achieving the limiting of the wire rope and the buffer component.

[0009] Preferably, the hook assembly includes a crossbeam disposed above the speed limiter, a slider is fixedly connected to the outer wall of the crossbeam, and a hook is fixedly connected to the bottom of the slider. The hook is used to hook the wire rope. The wire rope on the speed limiter is hooked by the slider on the outer wall of the crossbeam and the hook fixed at the bottom, thereby achieving the hooking and positioning of the wire rope.

[0010] Preferably, the sliding assembly includes a connecting block three fixedly connected to the bracket. The outer wall of the crossbeam is slidably connected to the connecting block three. The inner wall of the connecting block three is provided with several limiting grooves two. Two elastic elements are provided inside the crossbeam. The several limiting grooves two are arranged in an array. The two elastic elements are mirror images of each other. Each elastic element includes a slider two slidably connected to the inner wall of the crossbeam. The shape of the slider two is adapted to the several limiting grooves two. Two springs two are fixedly connected to the side of the slider two away from the limiting grooves two. The side of each spring two away from the slider two is fixedly connected to the crossbeam. The two springs two are mirror images of each other. With the sliding cooperation between the connecting block three on the bracket and the crossbeam, combined with the two mirror images of the elastic elements inside the crossbeam, the elasticity of the springs two is used to make the slider two adapt to the limiting grooves two arranged in an array on the inner wall of the connecting block three, thereby realizing the positioning and adjustment of the crossbeam after sliding.

[0011] Preferably, the speed governor described in this utility model is an OX-240 elevator speed governor. Its working principle is as follows: When the elevator is running, the speed governor rope wheel rotates with the car. If the car exceeds the speed limit, the centrifugal block inside the speed governor is thrown outward under the action of centrifugal force, first triggering the overspeed electrical switch, cutting off the safety circuit, and causing the brake to engage. If the car speed still does not decrease, the centrifugal block moves further, the pawl locks the ratchet, the contact rod pulls the pressure block to brake the wire rope, and then the linkage mechanism causes the safety clamp to clamp the guide rail and stop the car.

[0012] Preferably, the pliers described in this utility model are HY236 heavy-duty pliers. By manually operating the pliers handle, the pliers head is driven to close using the lever principle, accurately clamping the speed governor wire rope. After clamping, in conjunction with the speed governor calibration process, the tension of the wire rope can be controlled or a detached state can be simulated to ensure that the wire rope can be stably fixed during calibration, avoiding slippage. This assists in completing the testing of parameters such as speed and braking performance of the speed governor, and is suitable for elevator maintenance and testing scenarios.

[0013] Compared with existing technologies, the beneficial effects of this utility model are as follows:

[0014] 1. By setting up a buffer section, the bracket is placed outside the speed limiter. After clamping the wire rope with pliers, the bracket is placed on the connecting block one. The pliers squeeze the connecting block one, causing it to slide on the connecting block two and compress the spring one. The connecting block two is pushed along the limit rod until it is close to the speed limiter. Press the pliers to slide the limit bracket into the limit groove one to limit the pliers. When unlocking, the spring one drives the connecting block one to spring up and reset. This can not only form a buffer through the elastic force generated by the spring compression, avoiding hard impact on the wire rope or speed limiter during clamping, but also prevent the pliers from lifting up and causing the wire rope to loosen and slide back into the speed limiter wheel groove, thus providing a stable and safe wire rope limit condition for speed limiter calibration and ensuring the reliability of the preparation work before calibration.

[0015] 2. By setting up a pull-line section, a wire rope is hooked with a line hook. Pushing slider one causes the crossbeam to slide within connecting block three, squeezing slider two and compressing spring two. When the crossbeam slides to the corresponding position, spring two drives slider two to engage with limit groove two for fixation. The line hook pulls the wire rope away from the wheel groove. After verification, the reverse operation resets the pull-line section. This method can hook the wire rope away from the speed limiter wheel groove, preventing the wire rope from floating and affecting the test during verification. Furthermore, the cooperation between slider two and the limit groove can quickly lock the wire rope hooked position, ensuring that the wire rope is always detached from the wheel groove during verification and does not interfere with the normal verification operation of the speed limiter. After verification, the reverse operation can easily reset the wire rope without affecting the subsequent reset and installation of the wire rope, thus ensuring the stable progress of the verification work.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a partial cross-sectional view of the limiting component of this utility model;

[0019] Figure 3 This is a partial cross-sectional view of the buffer assembly of this utility model;

[0020] Figure 4 This is a schematic diagram of the overall structure of the hook assembly of this utility model;

[0021] Figure 5 This is a partial cross-sectional view of the sliding component of this utility model.

[0022] In the attached diagram, 101 is the speed limiter; 102 is the wire rope; 103 is the bracket; 2 is the buffer section; 21 is the buffer assembly; 211 is the connecting block one; 212 is the connecting block two; 213 is the spring one; 214 is the limiting plate; 215 is the limiting block; 22 is the limiting assembly; 221 is the pliers; 222 is the limiting groove one; 223 is the limiting frame; 224 is the limiting rod; 3 is the pull wire section; 31 is the hook assembly; 311 is the crossbeam; 312 is the slider one; 313 is the line hook; 32 is the sliding assembly; 321 is the connecting block three; 322 is the limiting groove two; 323 is the slider two; and 324 is the spring two. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figures 1 to 5 As shown, the present invention provides an elevator speed governor calibration bracket with a buffer mechanism, including a speed governor 101 and a steel wire rope 102 wound on the speed governor 101. A bracket 103 is provided outside the speed governor 101. The bracket also includes: a buffer part 2, which is disposed inside the bracket 103; and a pull wire part 3, which is located at the upper end of the bracket 103.

[0025] The buffer section 2 includes a buffer assembly 21, of which two buffer assemblies 21 are provided, both of which are located outside the speed limiter 101; and a limiting assembly 22, which is also located outside the speed limiter 101. The buffer assembly 21 includes a connecting block 211 disposed outside the speed limiter 101, a connecting block 212 slidably connected to the inner wall of the connecting block 211, and two springs 213 fixedly connected to the bottom inner wall of the connecting block 212, the tops of which are fixed to the connecting block 211. The connection includes a limiting component inside connecting block 1 211, two buffer components 21 mirror images of each other, and two springs 213 mirror images of each other. The limiting component includes a limiting plate 214 fixedly connected to the inner wall of connecting block 212, a limiting block 215 fixedly connected to the inner wall of connecting block 1 211, and the outer wall of the limiting plate 214 slidably connected to the limiting block 215. The limiting block 215 is an inverted C-shaped block. The limiting component 22 includes two clamps 221 mounted on the wire rope 102. The two connecting blocks 211... Each of the 11 sections has two limiting grooves 222. Several limiting grooves 222 are equipped with two limiting brackets 223. The inner wall of the bracket 103 is fixedly connected to two limiting rods 224. Both limiting rods 224 pass through two connecting blocks 212. The inner walls of the two connecting blocks 212 are slidably connected to the two limiting rods 224. Two clamps 221 are mirror images of each other and are used to clamp the wire rope 102. The two limiting brackets 223 are mirror images of each other, and each limiting bracket 223 is respectively connected to several... Each limiting groove 222 is matched, and the two limiting rods 224 are mirror images of each other. By setting the buffer part 2, the elastic force generated by the spring compression can form a buffer to avoid hard impact on the wire rope 102 or the speed limiter 101 during the clamping process. At the same time, the fixing effect of the limiting component 22 can prevent the clamps 221 from lifting up and causing the wire rope 102 to loosen and slide back into the speed limiter 101 groove. This provides a stable and safe wire rope limiting condition for speed limiter calibration and ensures that the preparation work before calibration is reliable.

[0026] The cable pull section 3 includes a hook assembly 31, which is positioned above the speed limiter 101; and two sliding assemblies 32, each mounted on the bracket 103 and mirror-image of the other. The hook assembly 31 includes a crossbeam 311 positioned above the speed limiter 101. A slider 312 is fixedly connected to the outer wall of the crossbeam 311, and a hook 313 is fixedly connected to the bottom of the slider 312 for hooking the wire rope 102. The sliding assembly 32 includes a connecting block 321 fixedly connected to the bracket 103. The outer wall of the crossbeam 311 is slidably connected to the connecting block 321. The inner wall of the connecting block 321 has several limiting grooves 322. Two elastic elements are disposed within the crossbeam 311, and the limiting grooves 322 are arranged in an array, with the two elastic elements mirror-image of each other. The elastic element includes a slider 323 slidably connected to the inner wall of the crossbeam 311. The shape of the slider 323 is adapted to several limiting grooves 322. Two springs 324 are fixedly connected to the side of the slider 323 away from the limiting grooves 322. The side of each spring 324 away from the slider 323 is fixedly connected to the crossbeam 311. The two springs 324 are mirror images of each other. By setting the pull wire part 3, the floating of the wire rope 102 during the calibration process can be avoided from affecting the detection. Moreover, the cooperation between the slider 323 and the limiting grooves 322 can quickly lock the position of the wire rope 102 hook, ensuring that the wire rope 102 is always detached from the wheel groove during the calibration process, without interfering with the normal calibration operation of the speed limiter 101. After calibration, the reverse operation can be used for convenient reset without affecting the subsequent reset and installation of the wire rope 102, thus ensuring the stable progress of the calibration work.

[0027] One specific application of this embodiment is as follows: During use, the elevator can be stopped at the second-to-last floor, and the main power supply of the elevator traction machine can be cut off to ensure operational safety. Then, the bracket 103 can be placed outside the speed governor 101. Next, the wire rope 102 can be clamped at the upward port using pliers 221. Then, the wire rope 102 at the downward port can be pulled to disengage it from the groove in the speed governor 101. Another pair of pliers 221 can be used to clamp the other end of the wire rope 102, thus preventing the wire rope 102 from slipping back into the groove. After clamping the wire rope 102 with pliers 221, it can be placed on connecting block one 211. Then, the pliers 221 can be released. At this time, the pliers 221 will squeeze connecting block one 211, causing it to press against connecting block two 212. The sliding mechanism compresses the spring 213, generating elasticity. The limiting block 215 and limiting plate 214 ensure the stable sliding of connecting block 211 on connecting block 212. At this point, connecting block 212 can be pushed to slide on the limiting rod 224. Finally, after adhering to the speed limiter 101, the sliding can stop. Then, the pliers 221 can be pressed against the surface of connecting block 211, and the limiting bracket 223 can be slid into the two limiting grooves 222 to restrain the pliers 221 and prevent it from lifting during use. After lifting the wire rope 102, the hook 313 can be hooked onto the wire rope 102, and then the slider 312 can be pushed to bring it along... The moving crossbeam 311 slides within the two connecting blocks 321. When the crossbeam 311 slides within the connecting blocks 321, it is pressed against the slider 323 by the limiting groove 322, causing it to slide on the crossbeam 311 and press against the spring 324, compressing it and generating elastic force. When the crossbeam 311 slides to the corresponding position, the slider 323 will be driven to lock onto the corresponding limiting groove 322 by the elastic force of the spring 324, thus completing the fixation. As the hook 313 moves, it will hook the wire rope 102 away from the wheel groove in the speed governor 101, and then the speed governor 101 can be checked. The check can be performed using an existing portable elevator speed governor checker. After the check is completed, the operation can be reversed. Pull the cable section 3 to reset it. Then, the wire rope 102 can be moved to the top of the wheel groove in the speed limiter 101. Then, the two limit brackets 223 can be slid out from the several limit grooves 222 respectively. Then, the pliers 221 at the downward port can be released to loosen the wire rope 102 and put the wire rope 102 back onto the wheel groove in the speed limiter 101. Then, the pliers 221 at the upward port can be released in the same way. When unlocking the two limit grooves 222, under the action of the elastic force of several springs 213, the two connecting blocks 211 will be driven to spring up from the two connecting blocks 212 respectively to complete the reset. Then, the bracket 103 can be removed from the speed limiter 101 and the elevator can be restarted.

[0028] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art, after reading this specification, can make modifications, substitutions, variations, and various choices and changes to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, variations, and choices and changes are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. An elevator speed governor calibration bracket with a buffer mechanism, comprising a speed governor (101) and a steel wire rope (102) wound around the speed governor (101), wherein a bracket (103) is provided outside the speed governor (101), characterized in that, Also includes: A buffer section (2) is disposed within a bracket (103); The pull wire part (3) is located at the upper end of the bracket (103); The buffer section (2) includes two buffer components (21), both of which are located outside the speed limiter (101); and Limiting component (22), the limiting component (22) is located outside the speed limiter (101); The buffer assembly (21) includes a connecting block 1 (211) disposed outside the speed limiter (101), a connecting block 2 (212) slidably connected to the inner wall of the connecting block 1 (211), two springs 1 (213) fixedly connected to the bottom inner wall of the connecting block 2 (212), the tops of the two springs 1 (213) being fixedly connected to the connecting block 1 (211), and a limit member being provided inside the connecting block 1 (211); Among them, the two buffer components (21) are mirror images of each other, and the two springs (213) are mirror images of each other.

2. The elevator speed governor calibration bracket with buffer mechanism according to claim 1, characterized in that, The cable pull section (3) includes a cable hook assembly (31), which is disposed above the speed limiter (101); and Two sliding components (32) are provided, and both sliding components (32) are mounted on the bracket (103); Among them, the two sliding components (32) are mirror images of each other.

3. The elevator speed governor calibration bracket with a buffer mechanism according to claim 2, characterized in that, The limiting component (22) includes two clamps (221) set on the wire rope (102), two limiting grooves (222) are opened on each of the two connecting blocks (211), two limiting frames (223) are set on a plurality of the limiting grooves (222), two limiting rods (224) are fixedly connected to the inner wall of the frame (103), the two limiting rods (224) pass through the two connecting blocks (212), and the inner walls of the two connecting blocks (212) are slidably connected to the two limiting rods (224); Among them, the two pliers (221) are mirror images of each other and are used to clamp the wire rope (102), the two limit frames (223) are mirror images of each other and are respectively adapted to several limit slots (222), and the two limit rods (224) are mirror images of each other.

4. The elevator speed governor calibration bracket with buffer mechanism according to claim 3, characterized in that, The hook assembly (31) includes a crossbeam (311) disposed above the speed limiter (101), a slider (312) is fixedly connected to the outer wall of the crossbeam (311), and a hook (313) is fixedly connected to the bottom of the slider (312). Among them, the hook (313) is used to hook the wire rope (102).

5. The elevator speed governor calibration bracket with a buffer mechanism according to claim 4, characterized in that, The sliding assembly (32) includes a connecting block three (321) fixedly connected to the bracket (103), the outer wall of the crossbeam (311) is slidably connected to the connecting block three (321), the inner wall of the connecting block three (321) is provided with a plurality of limiting grooves two (322), and two elastic elements are provided in the crossbeam (311); Among them, several limiting slots (322) are arranged in an array, and the two elastic elements are mirror images of each other.

6. The elevator speed governor calibration bracket with buffer mechanism according to claim 5, characterized in that, The limiting member includes a limiting plate (214) fixedly connected to the inner wall of the second connecting block (212). A limiting block (215) is fixedly connected to the inner wall of the first connecting block (211). The outer wall of the limiting plate (214) is slidably connected to the limiting block (215); Among them, the limiting block (215) is an inverted "匚"-shaped block.

7. The elevator speed governor calibration bracket with a buffer mechanism according to claim 6, characterized in that, The elastic member includes a second slider (323) slidably connected to the inner wall of the cross beam (311). The outer shape of the second slider (323) is adapted to a number of second limiting grooves (322). Two second springs (324) are fixedly connected to the side of the second slider (323) away from the second limiting grooves (322). The two second springs (324) are fixedly connected to the cross beam (311) on the side away from the second slider (323); Among them, the two second springs (324) are arranged mirror-symmetrically.

Images