Electronic trigger type safety tongs

Abstract

The utility model discloses an electronic trigger type safety gear which comprises a base used for being connected with a lift car, an electromagnetic module fixedly arranged on the base, an electromagnetic lead screw fixedly connected with the electromagnetic module and a brake wedge block fixedly arranged on the electromagnetic lead screw. An electronic triggering mode is adopted, the electromagnetic module is powered on to achieve abutting braking of the braking wedge block to the guide rail, the response speed is high, the structure is simple, great advantages are achieved on elevator cost and installation, the construction period is effectively shortened, and due to the fact that a mechanical triggering structure of a traditional braking system is omitted, cost is reduced; and miniaturization design of the braking system is facilitated, and the occupied space of the hoistway is small.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator braking, in particular to an electronically triggered safety gear. Background Art

[0002] With the rapid development of society and the aggravation of population aging, elevators have gradually become an important and indispensable part of people's work and life. Therefore, higher requirements are placed on the installation of elevators and the hoistway space.

[0003] The original elevator safety gear braking system consists of a safety gear, a speed limiter, a tensioning device and a lifting device. The speed limiter monitors the elevator speed. If the speed exceeds the limit value, the travel switch on the speed limiter component will be triggered, and then the speed limiter will be braked. The safety gear lifting handle is mechanically lifted through the lifting device to lock the safety gear wedge block, thereby realizing the car stop. This braking system has a complex structure, requires a large hoistway size, and is very inconvenient for elevator cost and installation. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the utility model provides an electronically triggered safety gear with a simple structure and small hoistway occupancy space.

[0005] To achieve the above objectives, the utility model is realized through the following technical solutions.

[0006] The present application provides an electronically triggered safety gear, including:

[0007] A base for connecting the car;

[0008] An electromagnetic module fixedly arranged on the base, which can drive the electromagnetic screw rod to expand and contract relative to the electromagnetic module when powered on;

[0009] The electromagnetic screw rod is fixedly connected to the electromagnetic module;

[0010] A braking wedge block fixedly arranged on the electromagnetic screw rod;

[0011] Wherein, when the electromagnetic module is powered on, the braking wedge block can abut against the guide rail.

[0012] Further defined, in the above-mentioned electronically triggered safety gear, two electromagnetic screw rods are symmetrically and fixedly connected to the electromagnetic module, and braking wedge blocks are respectively fixedly arranged on the two electromagnetic screw rods;

[0013] Wherein, when the electromagnetic module is powered on, the two braking wedge blocks can retract relative to the electromagnetic module and clamp the guide rail.

[0014] Further defined, for an electronic trigger type safety clamp as described above, wherein the braking wedge is slidably arranged on the electromagnetic lead screw, and two adjusting nuts are threadedly connected to the electromagnetic lead screw;

[0015] Wherein, along the axial direction of the electromagnetic lead screw, the two adjusting nuts are located on both sides of the braking wedge and can respectively abut against the corresponding ends of the braking wedge.

[0016] Further defined, for an electronic trigger type safety clamp as described above, wherein a elastic reset unit is further included and arranged between the base and the braking wedge.

[0017] Further defined, for an electronic trigger type safety clamp as described above, wherein the elastic reset unit includes a guide rod fixedly arranged on the base, the guide rod is parallel to the axis of the electromagnetic lead screw and a clamping plate is fixedly arranged thereon;

[0018] Wherein, the braking wedge is slidably arranged on the guide rod, the clamping plate is located on the side of the braking wedge away from the base and a elastic member is arranged between the clamping plate and the braking wedge.

[0019] Further defined, for an electronic trigger type safety clamp as described above, wherein the elastic member is specifically arranged as a spring sleeved on the guide rod, and two ends of the spring respectively abut against the corresponding ends of the braking wedge and the clamping plate.

[0020] Further defined, for an electronic trigger type safety clamp as described above, wherein the braking wedge includes a connecting portion and a braking portion fixedly connected to the connecting portion, the length direction of the connecting portion is parallel to the extending direction of the guide rail, and the braking portion is perpendicular to the connecting portion;

[0021] Wherein, the connecting portion is fixedly connected to the guide rod, and one end of the braking portion away from the connecting portion can abut against the guide rail.

[0022] Further defined, for an electronic trigger type safety clamp as described above, wherein a receiving groove is arranged on the end face of the connecting portion of the braking wedge away from the base, and an adjusting hole communicating with the receiving groove is axially penetrated through the connecting portion along the electromagnetic lead screw;

[0023] Wherein, the electromagnetic lead screw penetrates through the adjusting hole and is slidably connected to the adjusting hole, one adjusting nut abuts against the end face of the braking wedge close to the base, and the other adjusting nut abuts against the inner wall of the receiving groove close to the base.

[0024] Further defined, for an electronic trigger type safety clamp as described above, wherein a guide hole communicating with the receiving groove is axially penetrated through the connecting portion of the braking wedge, and the guide rod of the elastic reset unit penetrates through the guide hole and is slidably connected to the guide hole;

[0025] Wherein, one end of the elastic member of the elastic reset unit abuts against one end of the clamping plate close to the base, and the other end abuts against the inner wall of the accommodating groove close to the base side.

[0026] Further defined, for an electronic trigger type safety clamp as described above, wherein, a plurality of mounting holes are provided on the base;

[0027] Wherein, the base is fixedly connected to the car body by bolts through the mounting holes.

[0028] The utility model has at least the following beneficial effects:

[0029] 1. Adopting an electronic trigger mode, the braking wedge block presses against the guide rail through energizing the electromagnetic module for braking. It not only has a fast response speed, but also has a simple structure, which has great advantages for the cost and installation of the elevator, effectively shortening the construction period. Since the mechanical trigger structure of the traditional braking system is omitted, the cost is reduced, which is convenient for the miniaturization design of the braking system and occupies less space in the hoistway;

[0030] 2. The braking wedge block is fixedly connected to the electromagnetic lead screw through an adjusting nut. When the adjusting nut rotates, the fixed position of the braking wedge block on the electromagnetic lead screw can be adjusted, so as to adjust the distance between the braking wedge block and the guide rail initially, and further ensure the pressing stability between the braking wedge block and the guide rail when the electromagnetic module is energized, with stronger applicability and practicability. Description of the Drawings

[0031] Figure 1 It is a schematic structural diagram of the electronic trigger type safety clamp according to the embodiment of the present application;

[0032] Figure 2 It is a schematic structural diagram of the electronic trigger type safety clamp according to the embodiment of the present application;

[0033] Figure 3 It is a schematic structural diagram of the electronic trigger type safety clamp according to the embodiment of the present application;

[0034] Figure 4 It is a schematic structural diagram of the electronic trigger type safety clamp according to the embodiment of the present application;

[0035] Figure 5 It is a schematic structural diagram of the "braking wedge block 500" in the electronic trigger type safety clamp according to the embodiment of the present application.

[0036] Reference Signs

[0037] Guide rail - 100, base - 200, mounting hole - 210, electromagnetic module - 300, electromagnetic lead screw - 400, braking wedge block - 500, connecting portion - 510, braking portion - 520, guide hole - 530, adjusting hole - 540, accommodating groove - 550, guide rod - 600, clamping plate - 700, elastic member - 800, adjusting nut - 900. Detailed implementation manners

[0038] The following will clearly describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0039] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are usually of the same type, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally indicates an "or" relationship between the associated objects before and after.

[0040] The following will, with reference to the accompanying drawings, describe in detail the electronic trigger type safety clamp provided in the embodiments of the present application through specific embodiments and their application scenarios.

[0041] As Figures 1 to 5 shown, the embodiment of the present application provides an electronic trigger type safety clamp, including a base 200 for connecting to a car, an electromagnetic module 300 fixedly arranged on the base 200, an electromagnetic screw rod 400 fixedly connected to the electromagnetic module 300, and a brake wedge 500 fixedly arranged on the electromagnetic screw rod 400.

[0042] Among them, when the electromagnetic module 300 is energized, it can drive the electromagnetic screw rod 400 to expand and contract relative to the electromagnetic module 300. In the energized state of the electromagnetic module 300, the brake wedge 500 can abut against the guide rail 100.

[0043] It can be understood that when the electromagnetic module 300 is not energized, the electromagnetic screw rod 400 does not expand and contract relative to the electromagnetic module 300, and the brake wedge 500 does not abut against the guide rail 100; when the electromagnetic module 300 is energized, it drives the electromagnetic screw rod 400 to move relative to the electromagnetic module 300, thereby driving the brake wedge 500 to move towards the side close to the guide rail 100 and abut against the guide rail 100. Under the friction force between the brake wedge 500 and the guide rail 100, the braking of the car relative to the guide rail 100 is realized; when the elevator stops and is overhauled safely, the electromagnetic module 300 is powered off, and the brake wedge 500 loses the pressing force on the guide rail 100, thereby realizing the release of the braking of the car relative to the guide rail 100.

[0044] In the embodiment of the present application, an above-mentioned electronic trigger type safety clamp is adopted, which adopts an electronic trigger mode. By energizing the electromagnetic module 300, the braking wedge 500 is pressed against the guide rail 100 for braking. It not only has a fast response speed but also a simple structure, which has great advantages for the cost and installation of the elevator, effectively shortening the construction period. Since the mechanical trigger structure of the traditional braking system is omitted, the cost is reduced, which is convenient for the miniaturized design of the braking system and occupies a small space in the hoistway.

[0045] In a preferred embodiment, as Figure 1 、 Figure 3 shown, a plurality of mounting holes 210 are provided on the base 200, and the base 200 is fixedly connected to the car by bolts through the mounting holes 210.

[0046] It can be understood that the fixed installation form of the base 200 and the car is not limited to the above one, and will not be elaborated here.

[0047] In a preferred embodiment, as Figures 1 to 5 shown, it further includes an elastic reset unit disposed between the base 200 and the braking wedge 500.

[0048] Among them, in the state where the electromagnetic module 300 is not energized, the elastic reset unit can drive the braking wedge 500 to reset to release the pressing brake on the guide rail 100.

[0049] In a preferred embodiment, as Figures 1 to 4 shown, the elastic reset unit includes a guide rod 600 fixedly arranged on the base 200. The guide rod 600 is parallel to the axis of the electromagnetic screw rod 400 and is fixedly provided with a clamping plate 700.

[0050] Among them, the braking wedge 500 is slidably arranged on the guide rod 600. The clamping plate 700 is located on the side of the braking wedge 500 away from the base 200, and an elastic member 800 is provided between the clamping plate 700 and the braking wedge 500.

[0051] It can be understood that when the electromagnetic module 300 is not energized, the elastic member 800 does not accumulate elastic potential energy, and a gap is maintained between the braking wedge 500 and the guide rail 100, so as to ensure the normal operation of the elevator; when the electromagnetic module 300 is energized, the electromagnetic screw rod 400 moves relative to the electromagnetic module 300 and drives the braking wedge 500 to press against the guide rail 100, and the elastic member 800 accumulates elastic potential energy; when the electromagnetic module 300 is de-energized, the braking wedge 500 resets under the elastic force of the elastic member 800, so as to release the pressing brake on the guide rail 100.

[0052] In a preferred embodiment, as Figures 1 to 4As shown, the elastic member 800 is specifically arranged as a spring sleeved on the guide rod 600, and both ends of the spring are respectively abutted against the corresponding side end faces of the brake wedge block 500 and the clamping plate 700.

[0053] It can be understood that the setting form of the elastic member 800 is not limited to the above one. For example, the elastic member 800 can also be arranged as other elastic structures such as a snap ring or elastic rubber, as long as it can realize the automatic reset of the brake wedge block 500, which will not be elaborated here.

[0054] In a preferred embodiment, as Figures 1 to 4 shown, the brake wedge block 500 is slidably arranged on the electromagnetic lead screw 400, and two adjusting nuts 900 are threadedly connected to the electromagnetic lead screw 400.

[0055] Among them, in the axial direction of the electromagnetic lead screw 400, the two adjusting nuts 900 are located on both sides of the brake wedge block 500 and can respectively abut against the corresponding side end faces of the brake wedge block 500.

[0056] In the embodiment of the present application, by adopting the above-mentioned electronic trigger type safety clamp, the brake wedge block 500 is fixedly connected to the electromagnetic lead screw 400 through the adjusting nut 900. When the adjusting nut 900 rotates, the fixed position of the brake wedge block 500 on the electromagnetic lead screw 400 can be adjusted, so as to adjust the initial distance between the brake wedge block 500 and the guide rail 100, and further ensure the pressing stability between the brake wedge block 500 and the guide rail 100 when the electromagnetic module 300 is powered on, with stronger applicability and practicability.

[0057] In a preferred embodiment, as Figures 1 to 4 shown, two electromagnetic lead screws 400 are symmetrically and fixedly connected to the electromagnetic module 300, and brake wedge blocks 500 are respectively fixedly arranged on the two electromagnetic lead screws 400.

[0058] Among them, the guide rail 100 is specifically arranged as a T shape. When the electromagnetic module 300 is in the powered-on state, the two brake wedge blocks 500 can retract relative to the electromagnetic module 300 and clamp the guide rail 100, so as to realize the braking between the car and the guide rail 100.

[0059] In a preferred embodiment, as Figure 5 shown, the brake wedge block 500 includes a connecting portion 510 and a braking portion 520 fixedly connected to the connecting portion 510. The length direction of the connecting portion 510 is parallel to the extending direction of the guide rail 100, and the braking portion 520 is perpendicular to the connecting portion 510.

[0060] Among them, the connecting portion 510 is fixedly connected to the guide rod 600, and one end of the braking portion 520 far from the connecting portion 510 can abut against the guide rail 100.

[0061] In a preferred embodiment, as Figure 5As shown, a receiving groove 550 is provided on the end face of the connecting portion 510 away from the base 200, and an adjusting hole 540 communicating with the receiving groove 550 is axially penetrated through the connecting portion 510 along the electromagnetic lead screw 400.

[0062] Among them, the electromagnetic lead screw 400 penetrates through the adjusting hole 540 and is slidably connected to the adjusting hole 540. One adjusting nut 900 abuts against the end face of the braking wedge block 500 close to the base 200, and the other adjusting nut 900 abuts against the inner wall of the receiving groove 550 close to the base 200.

[0063] It can be understood that the receiving groove 550 can provide a receiving space for the adjusting nut 900, and the overall occupied space of the safety clamp can be reduced while ensuring the overall structural strength of the braking wedge block 500.

[0064] In a preferred embodiment, as Figure 5 shown, a guiding hole 530 communicating with the receiving groove 550 is axially penetrated through the connecting portion 510 along the electromagnetic lead screw 400, and the guiding rod 600 penetrates through the guiding hole 530 and is slidably connected to the guiding hole 530.

[0065] Among them, one end of the elastic member 800 abuts against one end of the clamping plate 700 close to the base 200, and the other end abuts against the inner wall of the receiving groove 550 close to the base 200.

[0066] It can be understood that the receiving groove 550 can provide a receiving space for the clamping plate 700 and the elastic member 800, and the overall occupied space of the safety clamp can be reduced while ensuring the overall structural strength of the braking wedge block 500.

[0067] It should be noted that in this article, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0068] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them fall within the protection scope of the present application.

Claims

1. An electronically triggered safety clamp, characterized in that: include: A base, for connecting the car; The electromagnetic module is fixedly arranged on the base and can drive the electromagnetic screw rod to extend and retract relative to the electromagnetic module when powered on; The electromagnetic screw is fixedly connected to the electromagnetic module; A brake wedge is fixedly arranged on the electromagnetic screw rod; Wherein, when the electromagnetic module is powered on, the brake wedge can contact the guide rail.

2. An electronically triggered safety clamp according to claim 1, characterized in that: The electromagnetic screw rods are symmetrically and fixedly connected to the electromagnetic module, and brake wedges are fixedly provided on the two electromagnetic screw rods respectively; Wherein, when the electromagnetic module is powered on, the two brake wedges can retract relative to the electromagnetic module and clamp the guide rail.

3. The electronically triggered safety clamp according to claim 1, characterized in that: The brake wedge is slidably arranged on the electromagnetic screw rod, and two adjusting nuts are threadedly connected on the electromagnetic screw rod; The two adjusting nuts are located on both sides of the brake wedge and can respectively abut against corresponding ends of the brake wedge in the axial direction of the electromagnetic screw.

4. The electronically triggered safety clamp according to claim 1, characterized in that: It also includes an elastic force reset unit arranged between the base and the brake wedge.

5. An electronically triggered safety clamp according to claim 4, characterized in that: The elastic force reset unit comprises a guide rod fixedly arranged on the base, the guide rod is parallel to the axis of the electromagnetic screw rod and is fixedly provided with a clamping plate; The brake wedge is slidably arranged on the guide rod, and the clamping plate is located at a side of the brake wedge away from the base and an elastic member is arranged between the clamping plate and the brake wedge.

6. An electronically triggered safety clamp according to claim 5, characterized in that: The elastic member is specifically configured as a spring sleeved on the guide rod, and two ends of the spring are respectively in contact with the corresponding ends of the brake wedge and the clamping plate.

7. The electronically triggered safety clamp according to claim 1, characterized in that: The brake wedge block comprises a connecting portion and a braking portion fixedly connected to the connecting portion, the length direction of the connecting portion is parallel to the extending direction of the guide rail, and the braking portion is perpendicular to the connecting portion; The connecting portion is fixedly connected to the guide rod, and one end of the braking portion away from the connecting portion can abut against the guide rail.

8. An electronically triggered safety clamp according to claim 3 or 7, characterized in that: A receiving groove is provided on the end surface of the connecting portion of the brake wedge away from the base, and an adjustment hole connected to the receiving groove is provided on the connecting portion along the axial direction of the electromagnetic screw rod; The electromagnetic screw rod passes through the adjustment hole and is slidably connected with the adjustment hole, one adjustment nut abuts against the end surface of the brake wedge block close to the base, and the other adjustment nut abuts against the inner wall of the accommodating groove close to the base.

9. An electronically triggered safety clamp according to claim 4 or 7, characterized in that: A guide hole communicating with the accommodating groove is provided on the connecting portion of the brake wedge along the axial direction of the electromagnetic screw rod, and a guide rod of the elastic reset unit passes through the guide hole and is slidably connected with the guide hole; Among them, one end of the elastic member of the elastic reset unit abuts against one end of the clamping plate close to the base, and the other end abuts against the inner wall of the accommodating groove close to the base.

10. The electronically triggered safety clamp according to claim 1, characterized in that: The base is provided with a plurality of mounting holes; Wherein, the base is fixedly connected with the car bolts through the mounting holes.

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