阅读说明：本技术 一种电力维修用升降机限速装置 (Elevator speed limiting device for power maintenance ) 是由 熊卫明 于 2020-07-14 设计创作，主要内容包括：本发明公开了一种电力维修用升降机限速装置,包括安装盒,所述安装盒的内侧设置有缆线轮,且缆线轮上安装有主轴,所述安装盒的外侧设置有电磁开关,且电磁开关的外侧连接有驱动杆,所述驱动杆位于安装盒的外侧,且驱动杆上安装有第一横轴,所述刹车杆的上表面设置有触发块,且刹车杆的另一端安装有刹车板,并且刹车板位于缆线轮和安装盒之间,所述触发块的上方设置有微动开关,且微动开关安装于安装盒的外侧表面。该电力维修用升降机限速装置,电磁开关停止工作之后,此时涡旋弹簧推动驱动杆在第一横轴上进行旋转,方便驱动杆对棘爪进行推动顶动,故棘爪会进行旋转,有利于棘爪与棘轮之间进行连接,故方便对后续的相关结构进行触发驱动。(The invention discloses an elevator speed limiting device for power maintenance, which comprises an installation box, wherein a cable wheel is arranged on the inner side of the installation box, a main shaft is arranged on the cable wheel, an electromagnetic switch is arranged on the outer side of the installation box, a driving rod is connected to the outer side of the electromagnetic switch, the driving rod is positioned on the outer side of the installation box, a first transverse shaft is arranged on the driving rod, a trigger block is arranged on the upper surface of a brake rod, a brake plate is arranged at the other end of the brake rod, the brake plate is positioned between the cable wheel and the installation box, a micro switch is arranged above the trigger block, and the micro switch is arranged on the outer side surface of the installation box. This elevator speed limiting device for power maintenance, after electromagnetic switch stop work, vortex spring promoted the actuating lever and rotated on first cross axle this moment, made things convenient for the actuating lever to promote the top to move the pawl, so the pawl can rotate, is favorable to being connected between pawl and the ratchet, so the convenience triggers the drive to subsequent relevant structure.)

1. The utility model provides an elevator speed limiting device for power maintenance, includes mounting box (1), its characterized in that: the inner side of the mounting box (1) is provided with a cable wheel (2), a main shaft (3) is mounted on the cable wheel (2), an electromagnetic switch (4) is arranged on the outer side of the mounting box (1), a driving rod (5) is connected to the outer side of the electromagnetic switch (4), the driving rod (5) is located on the outer side of the mounting box (1), a first transverse shaft (6) is mounted on the driving rod (5), a vortex spring (7) is arranged between the driving rod (5) and the first transverse shaft (6), the driving rod (5) is connected with the first transverse shaft (6) through the vortex spring (7), a pawl (8) is arranged on the outer side of the driving rod (5), the pawl (8) is located on the outer side of the cable wheel (2), a second transverse shaft (9) is mounted on the pawl (8), and the pawl (8) is connected with the cable wheel (2) through the second transverse shaft (9), and a vortex spring (7) is also arranged between the second transverse shaft (9) and the cable wheel (2), a ratchet wheel (10) is arranged on the outer side of the cable wheel (2), a driving gear (11) is arranged on the outer side of the ratchet wheel (10), the ratchet wheel (10) and the driving gear (11) are both positioned on the inner side of the mounting box (1), the ratchet wheel (10) and the driving gear (11) are both mounted on the surface of a sleeve (12), the sleeve (12) is also positioned on the inner side of the mounting box (1), the sleeve (12) is mounted on the outer side of the main shaft (3), the vortex spring (7) is also arranged between the sleeve (12) and the main shaft (3), a brake lever (13) is arranged below the driving gear (11), a connecting tooth block (14) is arranged on the upper surface of the brake lever (13), and the brake lever (13) is connected with the driving gear (11) through the connecting tooth block (14), one end of the brake rod (13) is located on the inner side of the storage box (15), the storage box (15) is installed on the surface of the installation box (11), a storage cavity (16) is formed in one end of the brake rod (13), an ejector rod (17) is arranged on the inner side of the storage cavity (16), the ejector rod (17) is installed on the inner side of the storage box (15), a reset spring (18) is arranged on the outer side of the ejector rod (17), the reset spring (18) is located on the inner side of the storage cavity (16), the ejector rod (17) is connected with the brake rod (13) through the reset spring (18), a trigger block (19) is arranged on the upper surface of the brake rod (13), a brake plate (20) is installed at the other end of the brake rod (13), the brake plate (20) is located between the cable wheel (2) and the installation box (1), and a micro switch (21) is arranged above the trigger block (19), and the microswitch (21) is arranged on the outer side surface of the mounting box (1).

2. The elevator governor for power maintenance according to claim 1, wherein: the cable wheel (2) and the mounting box (1) form a rotating structure through the main shaft (3), and the cable wheel (2) pulls the lifting platform through a steel cable.

3. The elevator governor for power maintenance according to claim 1, wherein: the drive rod (5) forms a rotating structure through the vortex spring (7) and the first transverse shaft (6), and the upper end of the drive rod (5) is connected with the pawl (8) in a fitting mode.

4. The elevator governor for power maintenance according to claim 1, wherein: the number of pawl (8) is provided with 2, and 2 pawl (8) are located the both sides of cable wheel (2) respectively to 2 pawl (8) all constitute revolution mechanic through second cross axle (9) and cable wheel (2).

5. The elevator governor for power maintenance according to claim 1, wherein: ratchet (10) and drive gear (11) all are fixed connection with between sleeve (12), and constitute revolution mechanic between sleeve (12) and main shaft (3).

6. The elevator governor for power maintenance according to claim 1, wherein: one end of the brake rod (13) is of a transversely placed U-shaped structure, and the brake rod (13) is in through connection with the mounting box (1).

7. The elevator governor for power maintenance according to claim 1, wherein: the connecting tooth blocks (14) are distributed on the upper surface of the brake rod (13) at equal intervals, and the brake rod (13) is meshed and connected with the driving gear (11) through the connecting tooth blocks (14).

8. The elevator governor for power maintenance according to claim 1, wherein: the ejector rod (17) is fixedly connected with the storage box (15), and the ejector rod (17) and the brake rod (13) form a telescopic structure through a return spring (18).

9. The elevator governor for power maintenance according to claim 1, wherein: the brake plate (20) is of an arc-shaped structure, and the brake plate (20) is fixedly connected with the brake rod (13).

Technical Field

The invention relates to the technical field of power maintenance, in particular to a speed limiting device of a lifter for power maintenance.

Background

Power supply system is by power equipment, devices such as cable conductor and the support body of rod are constituteed, when high altitude power supply equipment breaks down, often need ascend a height the power maintenance, and maintain the power equipment of eminence for the convenience, the workman need use equipment such as lift usually to ascend a height the work, make things convenient for the workman to reach and correspond high maintenance to relevant equipment, but current coiling machine device can have following problem at the in-process that uses usually:

1. when the driving wire wheel of the elevator runs in an overspeed mode, the traction stability of the lifting platform is easily influenced, so that related personnel are easily caused to fall from high altitude, and meanwhile, the overspeed operation can bring large pulling force to a traction cable, so that the traction cable is easily broken;

2. when the driving wire wheel of the elevator exceeds the speed, the driving wire wheel of the elevator is not conveniently stopped emergently or limited in speed, so that the lifting platform is inconvenient to hover at a fixed point, and normal power maintenance work of workers is influenced.

Disclosure of Invention

The invention aims to provide a speed limiting device of a lift for power maintenance, which solves the problems that when a driving wire wheel of the lift provided in the background technology runs at an overspeed, the traction stability of a lifting platform is easily influenced, so that related personnel easily fall off at high altitude, meanwhile, the overspeed operation can bring large pulling force to a traction cable, so that the traction cable is easily broken, and when the driving wire wheel of the lift runs at an overspeed, the driving wire wheel of the lift is not conveniently and emergently stopped or limited, so that the lifting platform is inconvenient to hover at a fixed point, and the normal power maintenance work of workers is influenced.

In order to achieve the purpose, the invention provides the following technical scheme: a speed limiting device of an elevator for power maintenance comprises a mounting box, wherein a cable wheel is arranged on the inner side of the mounting box, a main shaft is arranged on the cable wheel, an electromagnetic switch is arranged on the outer side of the mounting box, a driving rod is connected to the outer side of the electromagnetic switch, the driving rod is positioned on the outer side of the mounting box, a first transverse shaft is arranged on the driving rod, a vortex spring is arranged between the driving rod and the first transverse shaft, the driving rod is connected with the first transverse shaft through the vortex spring, a pawl is arranged on the outer side of the driving rod and positioned on the outer side of the cable wheel, a second transverse shaft is arranged on the pawl and connected with the cable wheel through the second transverse shaft, the vortex spring is also arranged between the second transverse shaft and the cable wheel, a ratchet wheel is arranged on the outer side of the cable wheel, a driving gear is arranged on the outer side of the ratchet wheel, the ratchet wheel and the driving gear are both arranged on the surface of the sleeve, the sleeve is also positioned on the inner side of the mounting box, the sleeve is arranged on the outer side of the main shaft, a vortex spring is also arranged between the sleeve and the main shaft, a brake rod is arranged below the driving gear, a connecting tooth block is arranged on the upper surface of the brake rod, the brake rod is connected with the driving gear through the connecting tooth block, one end of the brake rod is positioned on the inner side of the storage box, the storage box is arranged on the surface of the mounting box, a storage cavity is formed in one end of the brake rod, an ejector rod is arranged on the inner side of the storage cavity and is arranged on the inner side of the storage box, a reset spring is arranged on the outer side of the ejector rod, the reset spring is positioned on the inner side of the storage cavity, the ejector rod is connected with the brake rod through the reset spring, a, and the brake plate is positioned between the cable wheel and the mounting box, a microswitch is arranged above the trigger block, and the microswitch is mounted on the outer side surface of the mounting box.

Preferably, the cable wheel forms a rotating structure through the main shaft and the mounting box, and the cable wheel pulls the lifting platform through a steel cable.

Preferably, the driving rod forms a rotating structure through the vortex spring and the first transverse shaft, and the upper end of the driving rod is in fit connection with the pawl.

Preferably, the number of the pawls is 2, the 2 pawls are respectively located on two sides of the cable wheel, and the 2 pawls and the cable wheel form a rotating structure through a second transverse shaft.

Preferably, the ratchet wheel and the driving gear are fixedly connected with the sleeve, and a rotating structure is formed between the sleeve and the main shaft.

Preferably, one end of the brake rod is of a transversely-placed U-shaped structure, and the brake rod is in through connection with the mounting box.

Preferably, the connecting tooth blocks are distributed on the upper surface of the brake lever at equal intervals, and the brake lever is in meshed connection with the driving gear through the connecting tooth blocks.

Preferably, be fixed connection between ejector pin and the receiver, and the ejector pin passes through reset spring and brake lever constitution extending structure.

Preferably, the brake plate is of an arc-shaped structure, and the brake plate is fixedly connected with the brake rod.

Compared with the prior art, the invention has the beneficial effects that: the speed limiting device of the elevator for power maintenance,

1. after the electromagnetic switch stops working, the vortex spring pushes the driving rod to rotate on the first transverse shaft, so that the driving rod can conveniently push and jack the pawl, the pawl can rotate, the connection between the pawl and the ratchet wheel is facilitated, and the subsequent related structures can be conveniently triggered and driven;

2. after the pawl is connected with the ratchet wheel, the cable wheel can conveniently perform synchronous rotary motion on the ratchet wheel through the pawl, so that the ratchet wheel can conveniently drive the driving gear to perform synchronous rotary motion through the sleeve, and the driving gear can conveniently drive subsequent related structures to work;

3. when drive gear rotated, drive gear this moment can carry out the simultaneous movement through connecting the tooth piece and promoting the brake lever, made things convenient for brake lever pulling brake block to carry out speed reduction control to the cable wheel, and the brake lever can drive the trigger block simultaneously and carry out the top to micro-gap switch and move.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic cross-sectional view of the back side of the present invention;

FIG. 3 is a schematic view of the connection structure of the carrier rod and the brake rod according to the present invention;

FIG. 4 is a schematic top view of the present invention;

fig. 5 is a schematic view of the connection structure of the driving rod and the first cross shaft according to the present invention.

In the figure: 1. mounting a box; 2. a cable wheel; 3. a main shaft; 4. an electromagnetic switch; 5. a drive rod; 6. a first lateral axis; 7. a scroll spring; 8. a pawl; 9. a second lateral axis; 10. a ratchet wheel; 11. a drive gear; 12. a sleeve; 13. a brake lever; 14. connecting the tooth blocks; 15. a storage box; 16. a receiving cavity; 17. a top rod; 18. a return spring; 19. a trigger block; 20. a brake plate; 21. a micro switch.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a speed limiting device of an elevator for power maintenance comprises a mounting box 1, a cable wheel 2 is arranged on the inner side of the mounting box 1, a main shaft 3 is mounted on the cable wheel 2, an electromagnetic switch 4 is arranged on the outer side of the mounting box 1, a driving rod 5 is connected to the outer side of the electromagnetic switch 4, the driving rod 5 is located on the outer side of the mounting box 1, a first transverse shaft 6 is mounted on the driving rod 5, a vortex spring 7 is arranged between the driving rod 5 and the first transverse shaft 6, the driving rod 5 is connected with the first transverse shaft 6 through the vortex spring 7, a pawl 8 is arranged on the outer side of the driving rod 5, the pawl 8 is located on the outer side of the cable wheel 2, a second transverse shaft 9 is mounted on the pawl 8, the pawl 8 is connected with the cable wheel 2 through the second transverse shaft 9, the vortex spring 7 is also arranged between the second transverse shaft 9 and the cable wheel 2, a, a driving gear 11 is arranged on the outer side of the ratchet wheel 10, the ratchet wheel 10 and the driving gear 11 are both positioned on the inner side of the mounting box 1, the ratchet wheel 10 and the driving gear 11 are both mounted on the surface of a sleeve 12, the sleeve 12 is also positioned on the inner side of the mounting box 1, the sleeve 12 is mounted on the outer side of the main shaft 3, a vortex spring 7 is also arranged between the sleeve 12 and the main shaft 3, a brake rod 13 is arranged below the driving gear 11, a connecting tooth block 14 is arranged on the upper surface of the brake rod 13, the brake rod 13 is mutually connected with the driving gear 11 through the connecting tooth block 14, one end of the brake rod 13 is positioned on the inner side of a storage box 15, the storage box 15 is mounted on the surface of the mounting box 11, a storage cavity 16 is formed inside one end of the brake rod 13, an ejector rod 17 is arranged on the inner side of the storage, and the return spring 18 is positioned at the inner side of the containing cavity 16, the ejector rod 17 is connected with the brake rod 13 through the return spring 18, the upper surface of the brake rod 13 is provided with a trigger block 19, the other end of the brake rod 13 is provided with a brake plate 20, the brake plate 20 is positioned between the cable wheel 2 and the mounting box 1, a microswitch 21 is arranged above the trigger block 19, and the microswitch 21 is arranged on the outer side surface of the mounting box 1.

The cable wheel 2 in the embodiment forms a rotating structure with the mounting box 1 through the main shaft 3, and the cable wheel 2 pulls the lifting platform through the steel cable, so that the steel cable and the lifting platform can be driven to synchronously work through the rotating work of the cable wheel 2;

the driving rod 5 forms a rotating structure through the vortex spring 7 and the first transverse shaft 6, and the upper end of the driving rod 5 is in fit connection with the pawl 8, so that the driving rod 5 can conveniently push the pawl 8 after rotating through the first transverse shaft 6;

2 pawls 8 are arranged, the 2 pawls 8 are respectively positioned on two sides of the cable wheel 2, and the 2 pawls 8 and the cable wheel 2 form a rotating structure through a second transverse shaft 9, so that the 2 pawls 8 can conveniently perform synchronous rotating motion on the cable wheel 2 through the second transverse shaft 9;

the ratchet wheel 10 and the driving gear 11 are fixedly connected with the sleeve 12, and a rotating structure is formed between the sleeve 12 and the main shaft 3, so that the ratchet wheel 10 can push the driving gear 11 to synchronously rotate through the sleeve 12 when rotating;

one end of the brake rod 13 is in a transversely-placed U-shaped structure, and the brake rod 13 is in through connection with the mounting box 1, so that the brake rod 13 can conveniently move synchronously on the mounting box 1;

the connecting tooth blocks 14 are distributed on the upper surface of the brake rod 13 at equal intervals, and the brake rod 13 is meshed with the driving gear 11 through the connecting tooth blocks 14, so that when the driving gear 11 rotates, the driving gear 11 can push the brake rod 13 to synchronously move through the connecting tooth blocks 14;

the ejector rod 17 is fixedly connected with the storage box 15, the ejector rod 17 and the brake rod 13 form a telescopic structure through the return spring 18, the brake rod 13 can conveniently perform telescopic motion on the outer side of the ejector rod 17 under the pushing action of the return spring 18, and the retraction and reset of the brake rod 13 are facilitated;

brake block 20 is the arc structure, and is fixed connection between brake block 20 and the brake lever 13, makes things convenient for brake lever 13 to drive brake block 20 and carry out the synchronous motion when moving, is favorable to brake block 20 to withstand cable wheel 2 and slows down it.

The working principle is as follows: according to fig. 1-5, the initial state of the electromagnetic switch 4 is an energized closing state, when the cable wheel 2 has an overspeed condition, the electromagnetic switch 4 is powered off, so the right end of the electromagnetic switch 4 does not pull the driving rod 5 any more, at this time, the spiral spring 7 pushes the driving rod 5 to rotate counterclockwise on the first horizontal shaft 6, so the driving rod 5 pushes the pawl 8, at this time, the pushed pawl 8 drives the pawl 8 on the other side of the cable wheel 2 to rotate synchronously via the second horizontal shaft 9, at this time, the pawl 8 is meshed and connected with the ratchet 10 after completing the rotation, at this time, when the cable wheel 2 performs the rotation motion, the cable wheel 2 drives the ratchet 10 to perform the synchronous rotation motion via the pawl 8, and when the ratchet 10 rotates, the driving gear 11 is driven by the sleeve 12 to perform the synchronous rotation motion on the main shaft 3, therefore, the driving gear 11 at this time pushes the brake rod 13 to move leftward (based on the view angle of fig. 2) through the connecting tooth block 14, so that the left end of the brake rod 13 retracts into the storage box 15, the ejector rod 17 in the storage box 15 pushes the return spring 18 in the storage cavity 16 tightly while the brake rod 13 retracts into the storage box 15, the brake rod 13 at this time drives the brake plate 20 to push the cable wheel 2 tightly to decelerate while the brake rod 13 moves leftward, and meanwhile, the brake rod 13 drives the trigger block 19 to trigger the microswitch 21, so that the cable wheel 2 stops working;

when the cable wheel 2 does not overspeed any more, the electromagnetic switch 4 is powered on to work, the electromagnetic switch 4 pulls the driving rod 5 to rotate clockwise through the first transverse shaft 6, the driving rod 5 does not push the pawl 8 any more, the pawl 8 at the moment is reset to rotate, so the pawl 8 is also disconnected with the ratchet wheel 10, the cable wheel 2 does not drive the ratchet wheel 10 to rotate synchronously through the pawl 8 any more, the ratchet wheel 10 does not drive the driving gear 11 to rotate synchronously any more, so the driving gear 11 does not push the brake rod 13 to move through the connecting tooth block 14 any more, at the moment, the reset spring 18 pushes the brake rod 13 to extend out of the storage box 15, so the brake rod 13 drives the brake plate 20 to be far away from the cable wheel 2, and the triggering block 19 is disconnected with the microswitch 21, so the elevator speed limiting device for electric power maintenance is convenient to use.

It is to be understood that the terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the figures to facilitate a simplified description of the present invention, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be considered as limiting the scope of the present invention.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.