Asymmetric safety gear and car column

Abstract

The application discloses an asymmetric safety tongs, which comprises a tongs body assembly, a guide assembly and a reset assembly; the tongs body assembly comprises a tongs body, a fixed part and a movable part; the tongs body is provided with a channel for the guide rail to pass through, and the fixed part and the movable part are arranged on both sides of the channel; the fixed part is fixedly connected with the tongs body, and the movable part can move upwards along the tongs body under the action of an external pulling mechanism; the asymmetric safety tongs is installed in a car vertical column; the guide assembly is connected with the tongs body, so that the tongs body can move horizontally inside the car vertical column; and the reset assembly is connected with the tongs body, so that the tongs body can be kept at an initial position in a non-braking state.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of elevator technology, in particular to an asymmetric safety gear and a car column. BACKGROUND

[0002] The safety gear is an important safety component of the elevator, which plays a role in stopping the car or the counterweight when the car or the counterweight falls at a high speed. When the asymmetric safety gear acts, the fixed part and the movable part clamp the guide rail, and the friction generated stops the elevator. With the development of the elevator industry, the requirements for the civil construction of the elevator are getting higher and higher. The traditional safety gear can only be installed at the top or the bottom of the column, occupying the space of the top height and the pit depth. In addition, the connection mode of the traditional asymmetric safety gear and the column is fixed connection, which causes the column and the guide shoe to bear a large horizontal force when the safety gear acts. At the same time, the installation mode of the safety gear requires that the guide shoe must be equipped with elastic elements.

[0003] In order to solve the problem of horizontal movement of the column during braking, document CN 116262583 A discloses an installation structure of a floating safety gear, which fixes the gear body assembly on the column through the fixing bolts on the back of the gear body. The fixing bolts will protrude from the surface of the column. The back of the car column is generally the car room, and the protruding bolt head on the surface of the column will affect the installation space of the car wall. Document CN 111646337 B discloses a floating type elevator safety gear, which has a large outer dimension, and the reset mechanism is on the back of the gear body, so it can only be installed at the top or the bottom of the column and cannot be flexibly arranged at any height of the column. SUMMARY

[0004] To solve the above technical problems, the present application provides an asymmetric safety gear, which comprises a gear body assembly, a guide assembly and a reset assembly.

[0005] The gear body assembly comprises a gear body, a fixed part and a movable part. The gear body is provided with a channel for the guide rail to pass through, and the fixed part and the movable part are arranged on both sides of the channel. The fixed part is fixedly connected with the gear body, and the movable part can move upward along the gear body under the action of an external pulling mechanism.

[0006] The asymmetric safety gear is installed in the car column. The guide assembly is connected with the gear body, so that the gear body can move horizontally inside the car column. The reset assembly is connected with the gear body, so that the gear body remains in the initial position in the non-braking state.

[0007] Preferably, the back of the gear body has a positioning part. After the asymmetric safety gear is installed, the positioning part is accommodated in the sliding groove of the car column.

[0008] Preferably, the gap between the positioning part and the upper and lower edges of the sliding groove is less than 3mm.

[0009] Preferably, the positioning part outer end surface protrudes out of the car column outer surface by less than 3mm.

[0010] Preferably, the guiding assembly comprises a mounting base, a sleeve, a guiding column and a fixing bolt; the guiding column is fixed on both sides of the jaw body, the sleeve is arranged in the inner hole of the mounting base, and the guiding column can slide horizontally in the sleeve; and the mounting base is fixed with the car column by the fixing bolt.

[0011] Preferably, the reset assembly comprises a reset spring, a limiting rod, an adjusting nut and a locking nut; the reset spring is mounted on the limiting rod and located outside the side of the car column; the limiting rod passes through the mounting hole of the side of the car column and is sequentially assembled with the adjusting nut and the locking nut to fix the limiting rod with the jaw body; and the adjusting nut is used for adjusting the left-right position of the jaw body inside the car column.

[0012] The application also provides a car column, which is a C-shaped opening structure; and the side of the car column is provided with a mounting groove and a mounting hole for mounting the aforementioned asymmetric safety jaw.

[0013] Preferably, the back of the car column is provided with a sliding groove for accommodating the aforementioned positioning part.

[0014] Compared with the prior art, the application can achieve the following technical effects

[0015] 1. The safety jaw is arranged inside the car column to reduce the top layer height or the pit depth;

[0016] 2. The safety jaw is fixed in a floating manner with the column to avoid horizontal movement of the column during braking;

[0017] In the preferred technical solution, the following technical effects are also achieved

[0018] 1. The floating structure formed by the jaw body and the column does not invade the space between the column and the car wall, and the car wall is designed more conveniently.

[0019] 2. The specific structure of the guiding assembly and the reset assembly is simple and reliable, and it is more convenient to install and adjust before leaving the factory. BRIEF DESCRIPTION OF DRAWINGS

[0020] The application will be further described in detail below in combination with the accompanying drawings and specific embodiments:

[0021] Figures 1 to 3 It is a structural schematic diagram of the asymmetric safety jaw of Example 1 and a schematic diagram of the car column of Example 3. Figure 4 It is a structural schematic diagram of the asymmetric safety jaw of Example 2. DETAILED DESCRIPTION

[0022] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can fully understand other advantages and technical effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through different specific embodiments, and the details in this specification can also be applied based on different viewpoints, with various modifications or changes made without departing from the overall design concept of the invention. It should be noted that, unless otherwise specified, the following embodiments and features can be combined with each other. The following exemplary embodiments of the present invention can be implemented in many different forms and should not be construed as being limited to the specific embodiments set forth herein. It should be understood that these embodiments are provided to make the disclosure of the present invention thorough and complete, and to fully convey the technical solutions of these exemplary embodiments to those skilled in the art.

[0023] Example 1

[0024] like Figures 1 to 3 As shown, this embodiment provides an asymmetric safety clamp, including a clamp body assembly 2, a guide assembly 3, and a reset assembly 4; in this embodiment, the asymmetric safety clamp is a progressive safety clamp.

[0025] The clamp assembly 2 includes a clamp body 21, a fixing member 22, and a movable member 23; the clamp body 21 is provided with a channel for the guide rail 6 to pass through, and the fixing member 22 and the movable member 23 are respectively placed on both sides of the channel; the fixing member 22 is fixedly connected to the clamp body 21, and the movable member 23 can move upward along the clamp body 21 under the action of an external lifting mechanism; in this embodiment, the movable member 23 can move upward along the arc groove on the clamp body 21.

[0026] The asymmetric safety clamp is installed inside the car column 1; the guide assembly 3 is connected to the clamp body 21, so that the clamp body 21 can move horizontally inside the car column 1; the reset assembly 4 is connected to the clamp body 21, so that the clamp body 21 remains in the initial position when not braking.

[0027] The clamp body 21 has a positioning part on its back; after the asymmetric safety clamp is installed, the positioning part is accommodated in the groove of the car column 1.

[0028] The positioning part can be a positioning pin 5 fixed to the back of the clamp body 21, or a protrusion integral with the back of the clamp body 21.

[0029] After the asymmetric safety clamp is installed on the car column 1, the positioning pin 5 does not contact the upper and lower edges of the waist-shaped slide groove 13, and the gap between the positioning pin 5 and the upper and lower edges of the waist-shaped slide groove 13 is less than 3mm. The outer end face of the positioning pin 5 protrudes from the outer surface of the column 1 by less than 3mm. In actual car installation, there is a 6mm installation gap between the column 1 and the car wall. Therefore, this invention does not require additional installation space, which helps to further reduce the civil engineering requirements of the elevator.

[0030] The guiding assembly 3 comprises a mounting base 31, a sleeve 32, a guiding column 33 and a fixing bolt 34; the guiding column 33 is fixed on both sides of the jaw body 21 and corresponds to the mounting groove of the car stand 1. The sleeve 32 is arranged in the inner hole of the mounting base 31, and the guiding column 33 can slide horizontally in the sleeve 32; the mounting base 31 is fixed with the car stand 1 through the fixing bolt 34.

[0031] The reset assembly 4 comprises a reset spring 41, a limiting rod 42, an adjusting nut 43 and a locking nut 44; the reset spring 41 is arranged on the limiting rod 42 and located outside the side of the car stand 1.

[0032] The limiting rod 42 passes through the mounting hole 12 on the side of the car stand 1 and is sequentially assembled with the adjusting nut 43 and the locking nut 44 to fix the limiting rod 42 with the jaw body 21; the adjusting nut 43 is used to adjust the left-right position of the jaw body 21 inside the car stand 1, so that the gap between the fixed part 22 and the guide rail 6 and the gap between the movable part 23 and the guide rail 6 are similar in the non-braking state of the safety jaw.

[0033] The working principle of the asymmetric safety jaw in the embodiment is as follows:

[0034] During the early debugging, the jaw body 21 is moved horizontally inside the stand by adjusting the adjusting nut 43, so that the gap between the clamping surface of the fixed part 22 and the movable part 23 and the guide rail 6 exists, and a longitudinal channel is left for the guide rail to pass through.

[0035] In use, the stand 1 is fixed on the car, and when the car normally runs in the shaft, the jaw body 21 also moves together, and the guide rail 6 passes through the channel between the fixed part 22 and the movable part 23. When the car moves downward beyond a certain speed, the external pulling mechanism pulls the movable part 23 upward, so that the movable part 23 contacts with the guide rail 6, and pressure is generated after the movable part 23 contacts with the guide rail 6. Under the action of the pulling mechanism and the friction force, the movable part 23 moves upward, and in this process, the jaw body 21 as a whole will slide to the left due to the action of the guiding column 33, so that the fixed part 22 abuts against the other side of the guide rail 6, which makes the movable part 23 and the fixed part 22 abut against the two sides of the guide rail 6, so as to brake and stop the overspeed car.

[0036] Embodiment 2

[0037] As shown in the figure, the difference between the embodiment and the embodiment 1 is that the movable part is a sliding block 24 which can move upward along the ball 25 on the jaw body 21 to reduce the friction force when the sliding block moves upward. Figure 4 Embodiment 3

[0038]

[0039] ​As Figures 1 to 3 The embodiment provides a car stand column 1, which is a C-shaped opening structure; the side of the car stand column 1 is provided with a mounting groove 11 and a mounting hole 12 for mounting an asymmetric safety clamp.

[0040] The back of the car stand column is provided with a sliding groove 13 for accommodating the positioning part 5 of the clamp body.

[0041] The above has carried out the detailed explanation to the present application through the specific embodiment and the example, but these do not constitute the limitation to the present application. In the case where not departing from the principle of the present application, the person skilled in the art can also make many deformation and improvement, and these also should be regarded as the protection scope of the present application.

Claims

1. An asymmetric safety clamp, characterized in that, Includes clamp assembly, guide assembly, and reset assembly; The clamp assembly includes a clamp body, a fixed component, and a movable component; the clamp body is provided with a channel for the guide rail to pass through, and the fixed component and the movable component are respectively placed on both sides of the channel; the fixed component is fixedly connected to the clamp body, and the movable component can move upward along the clamp body under the action of an external lifting mechanism; The asymmetric safety clamp is installed inside the car pillar; the guide assembly is connected to the clamp body, allowing the clamp body to move horizontally inside the car pillar; the reset assembly is connected to the clamp body, allowing the clamp body to remain in its initial position when not braking. The clamp body has a positioning part on its back; after the asymmetric safety clamp is installed, the positioning part is accommodated in the slide groove of the car column; The height of the outer end face of the positioning part protruding from the outer surface of the car column is less than 3mm. The guide assembly includes a mounting base, a sleeve, a guide post, and fixing bolts; the guide post is fixed to both sides of the clamp body, the sleeve is disposed in the inner hole of the mounting base, and the guide post can slide horizontally inside the sleeve; the mounting base is fixed to the car column by fixing bolts. The positioning part does not contact the upper or lower edges of the groove.

2. The asymmetric safety clamp according to claim 1, characterized in that, The gap between the positioning part and the upper and lower edges of the slide groove is less than 3mm.

3. The asymmetric safety clamp according to claim 1, characterized in that, The reset assembly includes a reset spring, a limit rod, an adjusting nut, and a locking nut; the reset spring is mounted on the limit rod and is located on the outside of the side of the car column. The limiting rod passes through the mounting hole on the side of the car column, and an adjusting nut and a locking nut are installed in sequence to fix the limiting rod to the clamp body; the adjusting nut is used to adjust the left and right position of the clamp body inside the car column.

4. A car pillar, characterized in that, The car pillar has a C-shaped opening structure; the side of the car pillar has a mounting groove and mounting hole for installing the asymmetric safety clamp as described in any one of claims 1 to 3.

5. The car pillar according to claim 4, characterized in that, The back of the car pillar has a groove for accommodating the positioning part.

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