CN219507413U

CN219507413U - Safety tongs

Info

Publication number: CN219507413U
Application number: CN202320722198.9U
Authority: CN
Inventors: 潘利刚; 许洪亮; 赵准; 张荣业
Original assignee: Suzhou Yunchuan Metal Material Technology Co ltd
Current assignee: Suzhou Yunchuan Metal Material Technology Co ltd
Priority date: 2023-04-04
Filing date: 2023-04-04
Publication date: 2023-08-11
Anticipated expiration: 2033-04-04

Abstract

The utility model relates to a safety gear, comprising: a drive assembly; one end of the operating rod is connected with the driving assembly; one end of the lifting part is connected with the operating rod; a brake part connected with the other end of the lifting part; the guide rail is used for being connected with the braking part so as to realize that the braking part is clamped outside the guide rail when braking; the limiting part is connected with the braking part and used for limiting the sliding range of the braking part; and one side of the cargo carrying platform is connected with the limiting part. The utility model reduces the requirement on the guide rail, reduces the manufacturing cost of storage equipment, and is more convenient and reliable to install and debug.

Description

Safety tongs

Technical Field

The utility model relates to the technical field of elevator parts, in particular to a safety tongs.

Background

Elevator safety gear is one of the important safety devices of an elevator, which provides an effective protective effect for the safe operation of the elevator, which is typically mounted on a car frame or counterweight frame [1]. Safety tongs are classified into one-way safety tongs and two-way safety tongs, but the two-way safety tongs have not been popular in China due to the complex manufacturing process. The elevator safety tongs have the function that when the car or the counterweight fails to fall and overspeed, the speed limiter acts first to disconnect the safety tongs from the electric safety insurance, so that the safety tongs act to stop the operation of the elevator, and the safety of passengers is ensured.

When the traditional elevator safety tongs are used, the requirements of products on guide rails are high, the manufacturing cost is high, the installation and adjustment are inconvenient, the risk of misoperation exists in the use process, the traditional elevator safety tongs are in a single-lifting mode during braking, a cargo carrying platform can deviate during braking, the cargo carrying platform shakes, and if the clearance adjustment is unreasonable, the risk of incapability of braking exists.

The present utility model has been made in view of this.

Disclosure of Invention

The utility model aims to solve the technical problems of overcoming the defects of the prior art, providing the safety tongs, reducing the requirement on guide rails, reducing the manufacturing cost of storage equipment and being more convenient and reliable to install and debug.

In order to solve the technical problems, the utility model adopts the basic conception of the technical scheme that:

a safety gear comprising:

a drive assembly;

one end of the operating rod is connected with the driving assembly;

one end of the lifting part is connected with the operating rod;

a brake part connected with the other end of the lifting part;

the guide rail is used for being connected with the braking part so as to realize that the braking part is clamped outside the guide rail when braking;

the limiting part is connected with the braking part and used for limiting the sliding range of the braking part;

and one side of the cargo carrying platform is connected with the limiting part.

In a preferred embodiment of any of the foregoing aspects, the pulling portion includes:

the first lifting rod and the second lifting rod are symmetrically arranged on two sides of the guide rail, and one ends of the first lifting rod and the second lifting rod are connected with the operating rod.

In a preferred embodiment of any of the foregoing aspects, the braking portion includes:

the second braking elements and the first braking elements are symmetrically arranged on two sides of the guide rail, and the other ends of the first lifting rod and the second lifting rod are respectively connected with the first braking elements and the second braking elements.

In a preferred embodiment of any of the foregoing aspects, the limiting portion includes:

the second clamp body and the first clamp body are symmetrically arranged on two sides of the guide rail, and a second limit groove and a first limit groove are symmetrically arranged on the second clamp body and the first clamp body respectively;

the second braking element and the first braking element are respectively arranged in the second limiting groove and the first limiting groove.

the first brake element and the second brake element slide in the first limit groove and the second limit groove respectively.

In a preferred embodiment of any of the foregoing aspects, the second guide plate and the first guide plate are provided with a second limiting groove and a first limiting groove, respectively;

the second brake element and the first brake element are respectively provided with a second limiting shaft and a first limiting shaft, and the second limiting shaft and the first limiting shaft slide in the second limiting groove and the first limiting groove respectively.

In a preferred embodiment of any of the foregoing, the connector comprises:

the first screw is used for connecting the first guide plate with the first clamp body;

the second screw is used for connecting the second guide plate with the second clamp body.

the first rolling pin and the second rolling pin are arranged on the first braking element and are used for realizing sliding connection of the first braking element with the first guide plate through the first rolling pin;

the second rolling pin is arranged on the second braking element and is used for realizing sliding connection of the second braking element with the second guide plate through the second rolling pin.

the second spring and the first spring, one end of the second spring is connected with the second braking element, and the other end of the second spring is connected with the second guide plate;

one end of the first spring is connected with the first braking element, and the other end of the first spring is connected with the first guide plate.

In a preferred embodiment of any of the foregoing solutions, the first limiting groove and the second limiting groove are both provided.

By adopting the technical scheme, compared with the prior art, the utility model has the following beneficial effects.

Through setting up the pulling portion, and with the control lever is connected, can realize when braking the braking portion card is in outside the guide rail, and through spacing portion with the braking portion is connected for the restriction the slip scope of braking portion has reduced the requirement to the guide rail, has reduced storage equipment's manufacturing cost, and installation debugging is more convenient, reliable.

The following describes the embodiments of the present utility model in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. Some specific embodiments of the utility model will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers in the drawings denote the same or similar parts or portions, and it will be understood by those skilled in the art that the drawings are not necessarily drawn to scale, in which:

fig. 1 is a schematic view of the safety gear of the present utility model after installation.

Fig. 2 is a front view of the safety gear of the present utility model.

Fig. 3 is a perspective view of the safety gear of the present utility model.

In the figure: 1. a drive assembly; 2. a cargo bed; 3. a joystick; 4. a guide rail; 5. a first lifting rod; 6. a second lifting rod; 7. a first guide plate; 71. a first limit groove; 8. a second guide plate; 81. the second limit groove; 9. a first needle roller; 91. a second needle roller; 10. a second spring; 11. a first spring; 111. a first limiting shaft; 12. a second braking element; 121. the second limiting shaft; 13. a second clamp body; 14. a first clamp body; 15. a third limit groove; 16. a fourth limit groove; 17. a first screw; 18. a first braking element; 19. and a second screw.

It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but rather to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments, the elements of which are schematically represented and not drawn to scale.

Detailed Description

In order to enable those skilled in the art to better understand the present utility model, the following description will make clear and complete descriptions of the technical solutions according to the embodiments of the present utility model with reference to the accompanying drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

The following examples of the present utility model will illustrate the embodiments of the present utility model in detail by taking safety tongs as an example, but the examples should not limit the scope of the present utility model.

As shown in fig. 1 to 3, the present utility model provides a safety gear comprising:

a drive assembly 1;

a control rod 3, one end of which is connected with the driving assembly 1;

a lifting part, one end of which is connected with the operating rod 3;

a brake part connected with the other end of the lifting part;

the guide rail 4 is used for being connected with the braking part so as to realize that the braking part is clamped outside the guide rail 4 when braking;

and one side of the cargo table 2 is connected with the limiting part.

In the safety gear disclosed by the utility model, when the elevator fails to run or descends in overspeed, the safety gear automatically plays a role in braking, so that the elevator is stopped in situ, and the safety of passengers is protected. The driving assembly drives the lifting part to move through the control rod, so that the braking part is driven to be connected with the guide rail, and the braking effect is realized; meanwhile, the limiting part can control the moving range of the braking part, so that the braking part can be started timely and accurately, the requirement on a guide rail is reduced, the manufacturing cost of storage equipment is reduced, the installation and the debugging are more convenient and reliable, and the elevator braking device has the advantages of simple structure, reliable braking, convenience in operation and the like, and has important application value in elevator maintenance and safety protection.

As shown in fig. 1 to 3, the pulling part includes:

the first lifting rod 5 and the second lifting rod 6 are symmetrically arranged on two sides of the guide rail 4, and one ends of the first lifting rod 5 and the second lifting rod 6 are connected with the control rod 3.

In the safety tongs disclosed by the utility model, the first lifting pull rod 5 and the second lifting pull rod 6 which are symmetrical with each other are adopted, so that the cargo carrying platform cannot deviate in the braking process, the braking is smoother, the braking force is more stable, and the damage to the guide rail is smaller.

As shown in fig. 1 to 3, the braking section includes:

the second braking element 12 and the first braking element 18 are symmetrically arranged on two sides of the guide rail 4, and the other ends of the first lifting rod 5 and the second lifting rod 6 are respectively connected with the first braking element 18 and the second braking element 12.

In the safety gear of the present utility model, the second brake element 12 and the first brake element 18 adopt a disc spring group structure, wherein the disc spring group structure is a structure commonly used in the market, for example, the disc spring group structure can provide good shock absorption capacity and rigidity variation characteristics, and the structure adopts a disc spring to bear load, has the characteristic of larger deformation amount per unit volume, and can bear extremely large load in a smaller space. Meanwhile, friction resistance is generated between the surface and the guide rail 4, so that a braking effect can be achieved, and a high-efficiency braking effect is achieved.

As shown in fig. 1 to 3, the limiting portion includes:

the second clamp body 13 and the first clamp body 14 are symmetrically arranged on two sides of the guide rail 4, and a third limit groove 15 and a fourth limit groove 16 are symmetrically arranged on the second clamp body 13 and the first clamp body 14 respectively;

the second braking element 12 and the first braking element 18 are respectively arranged in the third limiting groove 15 and the fourth limiting groove 16;

the second guiding plate 8 and the first guiding plate 7 are respectively connected with the second caliper body 13 and the first caliper body 14 through connecting pieces, the first braking element 18 and the second braking element 12 respectively slide in the fourth limiting groove 16 and the third limiting groove 15, and the second guiding plate 8 and the first guiding plate 7 are respectively provided with a second limiting groove 81 and a first limiting groove 71; the second brake element 12 and the first brake element 18 are respectively provided with a second limiting shaft 121 and a first limiting shaft 111, and the second limiting shaft 121 and the first limiting shaft 111 slide in the second limiting groove 81 and the first limiting groove 71 respectively.

In the safety gear according to the utility model, the braking section comprises a second braking element 12 and a first braking element 18 symmetrically arranged on both sides of the guide rail 4, while the other ends of the first and second lifting rods 5, 6 are connected to the first and second braking elements 18, 12, respectively. Thus, upon actuation of the safety gear device, the first braking element 12 and the second braking element 18 will actuate and move rapidly, thereby braking the elevator for safety purposes.

In addition, the limit part is a part used for limiting the sliding range of the brake part in the safety tongs, the first brake element and the second brake element slide in the first limit groove and the second limit groove respectively, and the second guide plate and the first guide plate are also provided with the second limit groove and the first limit groove respectively. Meanwhile, the second brake element and the first brake element are also respectively provided with a second limiting shaft and a first limiting shaft, and the second limiting shaft and the first limiting shaft are in sliding connection with the second limiting groove and the first limiting groove to realize limiting functions. These limiting measures can ensure that the sliding range of the brake part is limited during operation, thereby improving the safety performance.

As shown in fig. 1 to 3, the connector includes:

a first screw 17 and a second screw 19, the first screw 17 being used to connect the first guide plate 7 with the first jaw 14; the second screw 19 is used for connecting the second guide plate 8 with the second clamp body 13, so that convenient disassembly and installation can be realized.

As shown in fig. 1 to 3, the limiting portion includes:

a first needle roller 9 and a second needle roller 91, wherein the first needle roller 9 is arranged on the first brake element 18, and is used for realizing the sliding connection of the first brake element 18 with the first guide plate 7 through the first needle roller 9; the second needle roller 91 is arranged on the second brake element 12, and is used for realizing the sliding connection of the second brake element 12 with the second guide plate 8 through the second needle roller 91;

a second spring 10 and a first spring 11, wherein one end of the second spring 10 is connected with the second braking element 12, and the other end is connected with the second guide plate 8; the first spring 11 is connected at one end to the first braking element 18 and at the other end to the first guide plate 7.

Specifically, the first needle roller 9 and the second needle roller 91 can effectively reduce the movement resistance of the first brake element 18 and the second brake element 12 within the limit range, simultaneously reduce the friction loss between the first brake element 18 and the second caliper body 13, and between the second brake element 12 and the first caliper body 14, and improve the service life of the safety caliper device.

Furthermore, the function of the second and first springs is to provide a reverse force when the first and second brake elements 18, 12 are moved from the limit position in order to achieve a quick start and maintain good control performance. The design can improve the response speed and the braking effect of the safety tongs and ensure the safety of the elevator in the running process.

As shown in fig. 1 to 3, the first limit groove 71 and the second limit groove 81 are provided with two.

In particular, in the sliding range of the first braking element 18 and the second braking element 12, they can limit their movement by four limit positions, so as to ensure high limit precision and reliability of the safety gear during operation.

Specifically, the first and second limiting grooves 71 and 81 are each divided into two parts so as to mount the first and second brake elements, and limit control is achieved by the first and second limit shafts. The first and second stop shafts are urged into the respective first and second stop grooves 71, 81 upon actuation of the safety gear, thereby ensuring that the first and second brake elements do not exceed their limit limits. The design can effectively reduce the running risk of the elevator and prevent accidents caused by the failure of the first braking element and the second braking element. Meanwhile, the four limiting positions can ensure that the safety tongs device can still keep stable and reliable limiting effect after long-time use, and the service life and safety performance of the elevator are improved.

When in operation: the safety tongs adopt a first lifting rod and a second lifting rod to respectively operate the first braking element and the second braking element so as to realize safe braking when the traction steel wire rope breaks or the cargo carrying platform descends rapidly. Specifically, when a dangerous situation occurs, the speed limiter drives the first lifting rod and the second lifting rod to ascend through the operating device, so that the first braking element and the second braking element respectively move upwards.

When the first braking element and the second braking element are contacted with the guide rail, the first braking element and the second braking element can continuously move upwards until the guide rail is clamped, so that the purpose of braking is achieved. In addition, the first limiting shaft on the first guide plate and the second limiting shaft on the second guide plate play a role in guiding in the braking process, so that the correct movement direction of the braking element is ensured, and the occurrence of offset and adverse conditions is avoided.

The safety tongs are simple and reliable in mechanism, and can avoid the deflection of the cargo carrying platform, so that the manufacturing cost of the storage equipment can be greatly reduced. Meanwhile, the brake device has the advantages of good braking effect, high safety and the like, is a very reliable safety measure, and can provide effective protection and guarantee for elevators and other vertical transportation equipment.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims

1. A safety gear, comprising:

a drive assembly (1);

one end of the control rod (3) is connected with the driving assembly (1);

one end of the lifting part is connected with the operating rod (3);

a brake part connected with the other end of the lifting part;

the guide rail (4) is used for being connected with the braking part so as to enable the braking part to be clamped outside the guide rail (4) when braking;

and one side of the cargo carrying platform (2) is connected with the limiting part.

2. The safety gear according to claim 1, wherein the pulling portion includes:

the first lifting rods (5) and the second lifting rods (6) are symmetrically arranged on two sides of the guide rail (4), and one ends of the first lifting rods (5) and the second lifting rods (6) are connected with the control rod (3).

3. Safety gear according to claim 2, characterized in that the braking portion comprises:

the second braking elements (12) and the first braking elements (18) are symmetrically arranged on two sides of the guide rail (4), and the other ends of the first lifting pull rod (5) and the second lifting pull rod (6) are respectively connected with the first braking elements (18) and the second braking elements (12).

4. A safety gear according to claim 3, wherein the limit stop comprises:

the second clamp body (13) and the first clamp body (14) are symmetrically arranged on two sides of the guide rail (4), and a third limit groove (15) and a fourth limit groove (16) are symmetrically arranged on the second clamp body (13) and the first clamp body (14) respectively;

the second braking element (12) and the first braking element (18) are respectively arranged in the third limiting groove (15) and the fourth limiting groove (16).

5. The safety gear according to claim 4, wherein the limit portion includes:

the second guide plate (8) and the first guide plate (7) are respectively connected with the second clamp body (13) and the first clamp body (14) through connecting pieces, and the first braking element (18) and the second braking element (12) respectively slide in the fourth limiting groove (16) and the third limiting groove (15).

6. Safety tongs according to claim 5, characterized in that the second guide plate (8) and the first guide plate (7) are provided with a second limit groove (81) and a first limit groove (71), respectively;

the second brake element (12) and the first brake element (18) are respectively provided with a second limiting shaft (121) and a first limiting shaft (111), and the second limiting shaft (121) and the first limiting shaft (111) slide in the second limiting groove (81) and the first limiting groove (71) respectively.

7. The safety gear according to claim 6, wherein the connecting member comprises:

a first screw (17) and a second screw (19), the first screw (17) being used for connecting the first guide plate (7) with the first clamp body (14);

the second screw (19) is used for connecting the second guide plate (8) with the second clamp body (13).

8. The safety gear according to claim 7, wherein the limit portion includes:

the first rolling needle (9) and the second rolling needle (91), the first rolling needle (9) is arranged on the first braking element (18) and is used for realizing the sliding connection of the first braking element (18) with the first guide plate (7) through the first rolling needle (9);

the second rolling needle (91) is arranged on the second braking element (12) and is used for realizing sliding connection of the second braking element (12) with the second guide plate (8) through the second rolling needle (91).

9. The safety gear according to claim 8, wherein the limit portion includes:

a second spring (10) and a first spring (11), wherein one end of the second spring (10) is connected with the second braking element (12), and the other end is connected with the second guide plate (8);

one end of the first spring (11) is connected with the first braking element (18), and the other end is connected with the first guide plate (7).

10. Safety tongs according to claim 9, characterized in that the first limit slot (71) and the second limit slot (81) are provided with two.