阅读说明：本技术 一种运行稳定的电动葫芦用限位装置 (Stop device for electric block that operation is stable ) 是由 郭昕航 李治军 孙程 杨州 于广超 于 2021-01-28 设计创作，主要内容包括：本发明公开了一种运行稳定的电动葫芦用限位装置,包括桁架、电动葫芦主体和限位组件,所述限位组件数量为两组并且分别固定安装在防脱挡板上,所述限位组件包括限位行程开关、限位触板和第一弹性装置,所述限位行程开关固定安装在防脱挡板上并且与驱动装置电联,所述第一弹性装置套设在限位行程开关外围并且与限位触板固定连接,所述限位触板与触碰板位置相对应。本发明采用限位行程开关、限位触板和触碰板,当触碰板向限位触板移动时,所述触碰板推动限位触板并使其与限位行程开关接触,从而限位行程开关控制驱动装置停止,提高安全性,同时利用第一压缩弹簧的弹力缓冲限位触板与限位行程开关的相触碰的作用力,既能减损,又能使其平稳停止。(The invention discloses a limiting device for an electric hoist, which is stable in operation and comprises a truss, an electric hoist main body and limiting assemblies, wherein the number of the limiting assemblies is two, the limiting assemblies are respectively and fixedly arranged on an anti-falling baffle, each limiting assembly comprises a limiting travel switch, a limiting touch plate and a first elastic device, the limiting travel switches are fixedly arranged on the anti-falling baffle and are electrically connected with a driving device, the first elastic devices are sleeved on the periphery of the limiting travel switches and are fixedly connected with the limiting touch plates, and the limiting touch plates correspond to the touch plates in position. The limit travel switch, the limit touch panel and the touch panel are adopted, when the touch panel moves towards the limit touch panel, the touch panel pushes the limit touch panel to be in contact with the limit travel switch, so that the limit travel switch controls the driving device to stop, the safety is improved, and meanwhile, the elastic force of the first compression spring is utilized to buffer the contact acting force of the limit touch panel and the limit travel switch, so that the damage can be reduced, and the limit travel switch can be stably stopped.)

1. A stop device for an electric hoist with stable operation comprises a truss (8), an electric hoist main body and a stop assembly, and is characterized in that a plurality of groups of rollers (10) are arranged on the electric hoist main body, a driving device (4) for driving the rollers (10) to rotate is further arranged in the electric hoist main body, a sliding rail (9) is arranged on the truss (8), the sliding rail (9) and the rollers (10) are in sliding fit, and anti-falling baffles (1) are further fixedly arranged on two sides of the truss (8) respectively; spacing subassembly quantity is two sets of and respectively fixed mounting on anticreep baffle (1), spacing subassembly includes spacing travel switch (14), spacing touch panel (2) and first resilient means, spacing travel switch (14) fixed mounting on anticreep baffle (1) and with drive arrangement (4) electricity federation, first resilient means cover is established in spacing travel switch (14) periphery and with spacing touch panel (2) fixed connection, spacing touch panel (2) are corresponding with touch panel (3) position of fixed mounting on electric block main part outer wall.

2. The limiting device for the electric hoist with the stable operation function according to claim 1, wherein the first elastic device comprises a first compression spring (13), the first compression spring (13) is sleeved outside the limiting travel switch (14) and two ends of the first compression spring are respectively and fixedly connected with the anti-dropping baffle (1) and the limiting touch plate (2).

3. The limiting device for the electric hoist with the stable operation according to claim 1, wherein the periphery of the roller (10) is sleeved with a rubber guard ring (12).

4. The stop device for the electric hoist with stable operation according to claim 1, characterized in that the electric hoist main body comprises an electric hoist housing (6), a winding drum (5) and a rope (17), the electric hoist housing (6) is slidably mounted on the truss (8) through a plurality of groups of rollers (10) and is fixedly mounted with a winding motor (7) inside, one end of the winding drum (5) is rotatably mounted inside the electric hoist housing (6) and the other end of the winding drum is linked with an output shaft of the winding motor (7), one end of the rope (17) is wound on the periphery of the winding drum (5) and the other end of the rope is fixed with a hook (11).

5. The stop device for the electric hoist with stable operation according to claim 4, characterized in that one end of the rope (17) close to the hook (11) is further provided with an annular pressure sensor (18), the annular pressure sensor (18) is floatingly mounted above the hook (11) through a second elastic device and is electrically connected with the winding motor (7), and one side of the annular pressure sensor (18) far away from the second elastic device corresponds to a pressure retaining ring fixedly mounted at the bottom of the electric hoist housing (6).

6. The stop device for the electric hoist with stable operation according to claim 5, characterized in that the second elastic device comprises a second compression spring (19) and a mounting ring (20), one end of the second compression spring (19) is fixedly mounted on the hook (11) through the mounting ring (20) and the other end is fixedly connected with the annular pressure sensor (18).

7. The limiting device for the electric hoist with the stable operation function according to claim 4, wherein a rope sensor (16) and a buzzer (15) are arranged on the outer wall of the winding roller (5), and the rope sensor (16) is electrically connected with the buzzer (15) and the winding motor (7) respectively.

Technical Field

The invention relates to a limiting device, in particular to a limiting device for an electric hoist, which runs stably.

Background

The electric hoist is a special hoisting device, can be arranged on a crown block and a gantry crane, can move back and forth, and has the characteristics of small volume, light dead weight, simple operation, convenient use and the like. When the electric hoist is used, the electric hoist needs to be prevented from exceeding a preset stroke in the movement process by means of the limiting device, and being collided or derailed to cause damage to components.

However, most of the existing limiting devices are in rigid contact with a limiting contact plate, and are lack of elastic devices for buffering, so that the limiting travel switch is easy to be damaged by collision. Therefore, the limiting device for the electric hoist is stable in operation.

Disclosure of Invention

The invention aims to provide a limiting device for an electric hoist, which runs stably and solves the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a limiting device for an electric hoist stable in operation comprises a truss, an electric hoist main body and a limiting assembly, wherein a plurality of groups of rollers are arranged on the electric hoist main body, a driving device for driving the rollers to rotate is further arranged in the electric hoist main body, a sliding rail is arranged on the truss, the sliding rail and the rollers are in sliding fit, and anti-falling baffles are fixedly arranged on two sides of the truss respectively; spacing subassembly quantity is two sets of and respectively fixed mounting on the anticreep baffle, spacing subassembly includes spacing travel switch, spacing touch panel and first resilient means, spacing travel switch fixed mounting on the anticreep baffle and with drive arrangement electricity federation, first resilient means cover is established at spacing travel switch periphery and with spacing touch panel fixed connection, spacing touch panel is corresponding with the touch panel position of fixed mounting on electric block main part outer wall.

As a further scheme of the invention: the first elastic device comprises a first compression spring, the first compression spring is sleeved outside the limit travel switch, and two ends of the first compression spring are respectively fixedly connected with the anti-falling baffle and the limit touch plate.

As a further scheme of the invention: rubber protective rings are sleeved on the peripheries of the rollers.

As a further scheme of the invention: the electric block main part includes electric block shell, rolling cylinder and rope, the electric block shell passes through the multiunit gyro wheel slidable mounting is in on the truss and its inside fixed mounting have the rolling motor, rolling cylinder one end is rotated and is installed inside the electric block shell and its other end and rolling motor's output shaft linkage sets up, rope one end winding is peripheral and its other end is fixed with the couple at the rolling cylinder.

As a further scheme of the invention: the rope is close to the one end of couple still is provided with annular pressure sensor, annular pressure sensor through the floating installation of second resilient means the couple top and with the coiling motor electricity federation, one side that annular pressure sensor kept away from second resilient means is with fixed mounting the pressure of electric block shell bottom keeps off the ring position and is corresponding.

As a further scheme of the invention: the second elastic device comprises a second compression spring and a mounting ring, one end of the second compression spring is fixedly mounted on the hook through the mounting ring, and the other end of the second compression spring is fixedly connected with the annular pressure sensor.

As a further scheme of the invention: and a rope sensor and a buzzer are arranged on the outer wall of the winding roller, and the rope sensor is electrically connected with the buzzer and the winding motor respectively.

Compared with the prior art, the invention has the beneficial effects that:

the driving device is adopted to drive the roller to roll in the slide rail, so as to drive the electric hoist main body to reciprocate on the truss, and the use is convenient; the electric hoist is characterized in that a limit travel switch, a limit touch plate and a touch plate are adopted, when the touch plate moves to the limit touch plate along with the electric hoist, the touch plate extrudes the limit touch plate and enables the limit touch plate to be in contact with the limit travel switch, so that the limit travel switch controls the driving device to stop, the electric hoist body stops moving in time, and the safety of the device is improved; the elastic force of the first compression spring is adopted to buffer the contact acting force of the limit touch plate and the limit travel switch, so that the limit touch plate and the limit travel switch are in flexible contact, the damage of the limit touch plate and the limit travel switch is reduced, and meanwhile, the movement trend of the electric hoist main body can be buffered, so that the electric hoist main body is stably stopped; the rubber protective ring is in contact with the sliding rail, so that the abrasion of the roller is reduced, the service life of the roller can be prolonged, the abraded rubber protective ring is convenient to replace, and the vibration of the device in the moving process can be slowed down by the elasticity of the rubber anti-slip ring, so that the device can run stably; a winding motor is adopted to drive a winding roller to rotate, so that the rope drives an object on the hook to move up and down; the annular pressure sensor is matched with the pressure retaining ring, when the pressure sensed by the annular pressure sensor exceeds a set value, the annular pressure sensor sends a signal to the winding motor to stop the winding motor, and the winding roller is prevented from forcibly pulling the hook into the shell of the electric hoist to damage related parts; the elastic force of the second compression spring is adopted to buffer the acting force of the annular pressure sensor and the pressure retaining ring, so that the annular pressure sensor and the pressure retaining ring are in flexible contact, and the damage of the annular pressure sensor and the pressure retaining ring is reduced; adopt rope sensor and buzzer cooperation, because emit too much when the rope, the length of winding on the take-up drum outer wall is not enough to enclose into the round time, rope sensor then controls the rolling motor stall, still controls buzzer simultaneously and takes place sound and reminds operating personnel, prevents that the rope is whole to be emitted, leads to the take-up drum antiport rolling rope, influences the use of this device.

Drawings

Fig. 1 is a schematic structural view of a limiting device for an electric hoist which operates stably.

Fig. 2 is a schematic structural view of a limiting assembly in the limiting device for the electric hoist, which operates stably.

Fig. 3 is a schematic structural view of a winding roller in the limiting device for the electric hoist which runs stably.

Fig. 4 is a schematic structural view of a hook in the limiting device for the electric hoist which operates stably.

Description of reference numerals:

1. an anti-drop baffle plate; 2. a limiting touch plate; 3. a touch pad; 4. a drive device; 5. a winding roller; 6. an electric hoist housing; 7. a winding motor; 8. a truss; 9. a slide rail; 10. a roller; 11. hooking; 12. a rubber guard ring; 13. a first compression spring; 14. a limit travel switch; 15. a buzzer; 16. a rope sensor; 17. a rope; 18. an annular pressure sensor; 19. a second compression spring; 20. and (7) installing a ring.

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.

Example 1

Referring to fig. 1 to 4, in the embodiment of the invention, the limiting device for the electric hoist with stable operation comprises a truss 8, an electric hoist main body and a limiting assembly, wherein the electric hoist main body is provided with a plurality of groups of rollers 10, and a driving device 4 for driving the rollers 10 to rotate is further arranged in the electric hoist main body, the truss 8 is provided with a slide rail 9, the slide rail 9 and the rollers 10 form sliding fit, two sides of the truss 8 are respectively and fixedly provided with an anti-falling baffle 1, and the driving device 4 drives the rollers 10 to roll in the slide rail 9 to drive the electric hoist main body to reciprocate on the truss 8, so that the electric hoist main body is convenient to use; the limiting assemblies are two in number and are respectively fixedly mounted on the anti-falling baffle plate 1, each limiting assembly comprises a limiting travel switch 14, a limiting touch plate 2 and a first elastic device, the limiting travel switches 14 are fixedly mounted on the anti-falling baffle plate 1 and are electrically connected with the driving device 4, the first elastic devices are sleeved on the periphery of the limiting travel switches 14 and are fixedly connected with the limiting touch plates 2, and the limiting touch plates 2 correspond to the touch plates 3 fixedly mounted on the outer wall of the electric hoist main body in position; when the touch panel 3 moves towards the limit touch panel 2 along with the electric hoist, the touch panel 3 extrudes the limit touch panel 2 and makes the limit touch panel contact with the limit travel switch 14, so that the limit travel switch 14 controls the driving device 4 to stop, the electric hoist body stops moving in time, and the safety of the device is improved.

The first elastic device comprises a first compression spring 13, the first compression spring 13 is sleeved outside the limit travel switch 14, and two ends of the first compression spring 13 are respectively and fixedly connected with the anti-falling baffle 1 and the limit touch plate 2; the touch pad 3 extrudes the first compression spring 13 through the limit touch pad 2, so that the limit touch pad 2 overcomes the elastic force of the first compression spring 13 to be contacted with the limit travel switch 14, and the elastic force of the first compression spring 13 is utilized to buffer the mutually-touched acting force of the limit touch pad 2 and the limit travel switch 14, so that the limit touch pad 2 and the limit travel switch are in flexible contact, the damage of the limit touch pad and the limit travel switch is reduced, and meanwhile, the motion trend of the electric hoist main body can be buffered, and the electric hoist main body is stably stopped.

In order to reduce the abrasion of the roller 10, the periphery of the roller 10 is sleeved with a rubber protection ring 12, the rubber protection ring 12 is in contact with the sliding rail 9, the service life of the roller 10 can be prolonged, the abraded rubber protection ring 12 is convenient to replace, the elasticity of the rubber anti-skid ring can be utilized to slow down the vibration of the device in the moving process, and the device is stable in operation.

The electric hoist main body comprises an electric hoist shell 6, a winding roller 5 and a rope 17, wherein the electric hoist shell 6 is slidably mounted on a truss 8 through a plurality of groups of rollers 10, a winding motor 7 is fixedly mounted in the electric hoist shell 6, one end of the winding roller 5 is rotatably mounted in the electric hoist shell 6, the other end of the winding roller 5 is in linkage with an output shaft of the winding motor 7, one end of the rope 17 is wound on the periphery of the winding roller 5, and a hook 11 is fixed at the other end of the rope; the winding motor 7 drives the winding roller 5 to rotate, so that the rope 17 drives the object on the hook 11 to move up and down.

In order to avoid that the hook 11 is taken into the electric hoist shell 6 when the rope 17 is wound by the winding roller 5, one end of the rope 17 close to the hook 11 is also provided with an annular pressure sensor 18, the annular pressure sensor 18 is arranged above the hook 11 in a floating mode through a second elastic device and is electrically connected with the winding motor 7, and one side, far away from the second elastic device, of the annular pressure sensor 18 corresponds to the position of a pressure retaining ring fixedly arranged at the bottom of the electric hoist shell 6; in the process that the rope 17 is wound by the winding roller 5 and approaches the hook 11, the annular pressure sensor 18 is in contact with the pressure retaining ring, when the pressure sensed by the annular pressure sensor 18 exceeds a set value, the annular pressure sensor 18 sends a signal to the winding motor 7 to stop the winding motor, and the winding roller 5 is prevented from forcibly drawing the hook 11 into the electric hoist shell 6 to damage related parts.

The second elastic device comprises a second compression spring 19 and a mounting ring 20, one end of the second compression spring 19 is fixedly mounted on the hook 11 through the mounting ring 20, and the other end of the second compression spring is fixedly connected with the annular pressure sensor 18; the elastic force of the second compression spring 19 is used for buffering the acting force of the annular pressure sensor 18 contacting with the pressure retaining ring, so that the annular pressure sensor 18 flexibly contacts with the pressure retaining ring, and the damage of the annular pressure sensor 18 and the pressure retaining ring is reduced.

Example 2

Referring to fig. 1 and 3, in an embodiment of the present invention, in order to prevent a rope 17 from being completely released, which causes a winding drum 5 to reversely rotate a winding rope 17, and affects the use of the device, on the basis of embodiment 1, a rope sensor 16 and a buzzer 15 are disposed on an outer wall of the winding drum 5, and the rope sensor 16 is electrically connected to the buzzer 15 and the winding motor 7, respectively; when the length of the rope 17 wound on the outer wall of the winding roller 5 is not enough to form a circle because of excessive unwinding, the rope sensor 16 controls the winding motor 7 to stop rotating, and also controls the buzzer 15 to make a sound to remind an operator.

The working principle of the invention is as follows:

when the device works, an object is hung on the hook 11, the winding motor 7 is started, the winding motor 7 drives the winding roller 5 to rotate, and the rope 17 drives the object on the hook 11 to move upwards to realize hoisting; starting the driving device 4, wherein the driving device 4 drives the roller 10 to roll in the slide rail 9 to drive the electric hoist main body to reciprocate on the truss 8, so that the transverse movement of an object is realized; when the touch pad 3 moves towards the limit touch pad 2 along with the electric hoist, the touch pad 3 extrudes the first compression spring 13 through the limit touch pad 2, so that the limit touch pad 2 overcomes the elastic force of the first compression spring 13 to be in contact with the limit travel switch 14, the limit travel switch 14 controls the driving device 4 to stop, the electric hoist body stops moving in time, the elastic force of the first compression spring 13 is utilized to buffer the contact acting force of the limit touch pad 2 and the limit travel switch 14, the limit touch pad 2 and the limit travel switch 14 are in flexible contact, and the damage of the limit touch pad and the limit travel switch is reduced; when the device is not used, the rope 17 is retracted, when the rope 17 is wound by the winding roller 5 and approaches the hook 11, the pressure sensor is in contact with the pressure baffle plate, when the pressure sensed by the pressure sensor exceeds a set value, the pressure sensor sends a signal to the winding motor 7 to stop the winding motor, the winding roller 5 is prevented from forcibly drawing the hook 11 into the electric hoist shell 6, the elastic force of the second compression spring 19 is utilized to buffer the acting force of the annular pressure sensor 18 in contact with the pressure retaining ring, so that the annular pressure sensor 18 is in flexible contact with the pressure retaining ring, and the damage of the annular pressure sensor 18 and the pressure retaining ring is reduced; before the object is hung by the hook 11, when the length of the rope 17 wound on the outer wall of the winding roller 5 is not enough to enclose a circle because of being paid out too much, the rope sensor 16 controls the winding motor 7 to stop rotating, and simultaneously controls the buzzer 15 to generate sound to remind an operator.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.