CN214527888U - Safety device of lifting platform - Google Patents
Safety device of lifting platform Download PDFInfo
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- CN214527888U CN214527888U CN202120461043.5U CN202120461043U CN214527888U CN 214527888 U CN214527888 U CN 214527888U CN 202120461043 U CN202120461043 U CN 202120461043U CN 214527888 U CN214527888 U CN 214527888U
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Abstract
A safety device of a lifting platform relates to the technical field of safety protection of lifting platforms. The platform is arranged on the lifting main frame body, the left side and the right side of the platform are respectively connected with one end of two weight-reducing brake steel wire ropes with the same length, the other end of the platform is connected to the balancing weight, a movable rope winding structure is arranged at the top of the lifting main frame body, the lifting steel wire ropes are arranged on rope winding pulleys at the lower part of the movable rope winding structure, one end of the lifting steel wire rope is connected to the lifting steel wire rope winding structure at the bottom of the lifting main frame body after bypassing the movable rope winding structure after being connected to the platform, the proximity switch is arranged on the inner side of the upper part of the lifting main frame body, and the right-angle variable speed motor is arranged on one side of the lifting steel wire rope winding structure; its simple structure, self structural installation and circuit structure installation cost are lower relatively, can provide higher safety protection performance, for lift platform provides the safety guarantee, the loss that causes when reducing lift platform trouble, and the practicality is higher relatively, is fit for not isostructure or working method's lift platform to use, and is simple high-efficient.
Description
Technical Field
The utility model relates to a lift platform safety protection technical field, concretely relates to lift platform's safety device.
Background
Lifting platform is a multi-functional jack-up loading and unloading mechanical equipment, can divide into fixed and portable: the movable type is divided into a straight arm type, a crank arm type, a scissor type, a mast type, an aluminum alloy lifting platform and a telescopic cylinder type: the fixed type is provided with a scissor fork type, a guide rail type lifting platform, a chain type lifting platform, a loading and unloading platform, an attached type electric construction platform and the like. The lifting platform is a hoisting machine for vertically transporting people or objects. Also refers to equipment for vertical conveying in logistics systems such as factories and automatic warehouses, and various plane conveying equipment is often arranged on the lifting platform and is used as a connecting device for conveying lines with different heights. The hydraulic lifting platform is generally driven by hydraulic pressure, so the hydraulic lifting platform is called as a hydraulic lifting platform. The device is widely applied to high-altitude installation, maintenance and other operations besides being used for conveying goods with different heights. The characteristic that the elevating platform freely goes up and down has been widely used in municipal maintenance, the transportation of goods in wharf, logistics center, building decoration etc., has installed that car chassis, storage battery car chassis etc. can freely walk, and the working height space also changes to some extent, has light in weight, from walking, electric start, from the landing leg, easy operation, operation face is big, can stride across 360 degrees free rotations advantages such as obstacle carries out high altitude construction.
Because current lift platform rate of utilization is higher, its frequency that breaks down and the accident also risees thereupon, and current lift platform safety arrangement is most comparatively complicated, and the structure is complicated, and the installation circuit is also comparatively complicated, need higher installation cost, and can not provide comparatively stable safety guarantee, lift platform's trouble leads to great loss extremely easily, consequently to lift platform, effective timely protection is especially important, to above problem and defect, a simple and effectual lift platform protection device has been proposed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to prior art's defect and not enough, provide a lift platform's safety device, its simple structure, self structural installation and circuit structure installation cost are lower relatively, can provide higher safety protection performance, provide safety guarantee for lift platform, the loss that causes when reducing lift platform trouble, the practicality is higher relatively, is fit for not isostructure or working method's lift platform and uses, and is simple high-efficient.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the device comprises a platform 1, a lifting main frame body 2, a proximity switch 3, a lifting steel wire rope 6, a movable rope winding structure 7, a weight-reducing brake steel wire rope 8, a right-angle variable-speed motor 9, a lifting steel wire rope winding structure 10, a balancing weight 11 and an electromagnetic brake rope winding structure 12; the lifting main frame body 2 is provided with a platform 1, the left side and the right side of the platform 1 are respectively connected with one end of two weight-reducing brake steel wire ropes 8 with equal length, two sides of the top of the lifting main frame body 2 are provided with electromagnetic brake rope winding structures 12, the two weight-reducing brake steel wire ropes 8 wind the electromagnetic brake rope winding structures 12 on the left side and the right side of the upper part of the lifting main frame body 2, the other end of the two weight-reducing brake steel wire ropes is connected with a balancing weight 11, the top of the lifting main frame body 2 is provided with a movable rope winding structure 7, the bottom of the movable rope winding structure 7 is provided with a pulley 72, a lifting steel wire rope 6 is arranged on the rope winding pulley 72 at the lower part of the movable rope winding structure 7, one end of the lifting steel wire rope winding structure 10 connected with the bottom of the lifting main frame body 2 after passing through the movable rope winding structure 7 after being connected with the platform 1, a proximity switch 3 is arranged at the inner side of the upper part of the lifting main frame body 2 and is positioned at one side of the movable rope winding structure 7, the right-angle variable-speed motor 9 is arranged on one side of the lifting steel wire rope winding structure 10.
The side of the side frame body of the lifting main frame body 2 is provided with a slide rail 4, and pulleys 5 at the left side and the right side of the platform 1 are connected with the lifting main frame body 2 in a sliding way through the slide rail 4.
The electromagnetic braking rope winding structure 12 includes an electromagnetic brake 121 and a brake wheel 122, and the electromagnetic brake 121 is connected with the brake wheel 122 through a rotating shaft.
The top of the movable rope winding structure 7 is also provided with a spring 71.
The proximity switch 3 is electrically connected with the electromagnetic brake 121 through an intermediate relay, and a relay is installed in an installation circuit of the proximity switch 3 and the electromagnetic brake 121.
The utility model discloses a theory of operation: when the lifting device is lifted, the electromagnetic brake is powered on and is in a non-braking state, and when the steel wire rope is broken, the movable rope winding structure is bounced by the spring to trigger the proximity switch to disconnect the power supply of the electromagnetic brake, so that the electromagnetic brake brakes and prevents the lifting platform from falling and being damaged.
Specifically, when the equipment is lifted, current supplies power to the electromagnetic brake through the intermediate relay to remove braking, when the steel wire rope breaks the spring on the upper part of the movable rope winding structure and bounces, the movable rope winding structure rises to trigger the proximity switch to control the intermediate relay to break the electromagnetic brake to supply power, the electromagnetic brake brakes, and the lifting platform is prevented from falling and being damaged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic structural view of the broken steel wire rope of the present invention;
fig. 3 is a perspective view of the present invention;
fig. 4 is a schematic structural diagram of the proximity switch 3 in the present invention;
fig. 5 is a schematic structural view of the movable rope winding structure 7 of the present invention;
fig. 6 is a schematic structural view of the electromagnetic braking roping arrangement 12 according to the present invention;
fig. 7 is a circuit diagram of the working principle of the present invention.
Description of reference numerals: the device comprises a platform 1, a lifting main frame body 2, a proximity switch 3, a slide rail 4, a pulley 5, a lifting steel wire rope 6, a movable rope winding structure 7, a spring 71, a rope winding pulley 72, a weight-reducing brake steel wire rope 8, a right-angle variable-speed motor 9, a lifting steel wire rope winding structure 10, a balancing weight 11, an electromagnetic brake rope winding structure 12, an electromagnetic brake 121 and a brake wheel 122.
Detailed Description
Referring to fig. 1 to 7, the technical solution adopted by the present embodiment is: the device comprises a platform 1, a lifting main frame body 2, a proximity switch 3, a lifting steel wire rope 6, a movable rope winding structure 7, a weight-reducing brake steel wire rope 8, a right-angle variable-speed motor 9, a lifting steel wire rope winding structure 10, a balancing weight 11 and an electromagnetic brake rope winding structure 12; the lifting main frame body 2 is provided with a platform 1, the left side and the right side of the platform 1 are respectively connected with one end of two weight-reducing brake steel wire ropes 8 with equal length, two sides of the top of the lifting main frame body 2 are provided with electromagnetic brake rope winding structures 12, the two weight-reducing brake steel wire ropes 8 wind the electromagnetic brake rope winding structures 12 on the left side and the right side of the upper part of the lifting main frame body 2, the other end of the two weight-reducing brake steel wire ropes is connected with a balancing weight 11, the top of the lifting main frame body 2 is provided with a movable rope winding structure 7, the bottom of the movable rope winding structure 7 is provided with a pulley 72, a lifting steel wire rope 6 is arranged on the rope winding pulley 72 at the lower part of the movable rope winding structure 7, one end of the lifting steel wire rope winding structure 10 connected with the bottom of the lifting main frame body 2 after passing through the movable rope winding structure 7 after being connected with the platform 1, a proximity switch 3 is arranged at the inner side of the upper part of the lifting main frame body 2 and is positioned at one side of the movable rope winding structure 7, the right-angle variable-speed motor 9 is arranged on one side of the lifting steel wire rope winding structure 10.
Further, the side of the lifting main frame body 2 is provided with a slide rail 4, and the pulleys 5 on the left and right sides of the platform 1 are slidably connected with the lifting main frame body 2 through the slide rail 4. The lifting of the lifting main frame body 2 is realized through the matching of the slide rail 4 and the pulley 5.
Further, the electromagnetic brake rope winding structure 12 includes an electromagnetic brake 121 and a brake drum 122, and the electromagnetic brake 121 is connected to the brake drum 122 through a rotating shaft. The matching of the electromagnetic brake 121 and the brake wheel 122 can well realize the braking effect.
Further, a spring 71 is arranged on the top of the movable rope winding structure 7. The spring 71 can provide a good cushioning effect.
Further, the proximity switch 3 is electrically connected to the electromagnetic brake 121 through an intermediate relay, and a relay is installed in an installation circuit of the proximity switch 3 and the electromagnetic brake 121.
The utility model discloses a theory of operation: when the lifting device is lifted, the electromagnetic brake is powered on and is in a non-braking state, and when the steel wire rope is broken, the movable rope winding structure is bounced by the spring to trigger the proximity switch to disconnect the power supply of the electromagnetic brake, so that the electromagnetic brake brakes and prevents the lifting platform from falling and being damaged.
Specifically, when the equipment is lifted, current supplies power to the electromagnetic brake through the intermediate relay to remove braking, when the steel wire rope breaks the spring on the upper part of the movable rope winding structure and bounces, the movable rope winding structure rises to trigger the proximity switch to control the intermediate relay to break the electromagnetic brake to supply power, the electromagnetic brake brakes, and the lifting platform is prevented from falling and being damaged.
After the technical scheme is adopted, the utility model discloses beneficial effect does: its simple structure, self structural installation and circuit structure installation cost are lower relatively, can provide higher safety protection performance, for lift platform provides the safety guarantee, utilize proximity switch to trigger to switch on and electromagnetic braking ware is the braking when not having the power supply, just remove the characteristics of braking when the power supply, the loss that causes when reducing lift platform trouble, the practicality is higher relatively, is fit for the lift platform of different structures or working method and uses, and is simple high-efficient.
The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (5)
1. A safety device of a lifting platform is characterized in that: the lifting main frame comprises a platform (1), a lifting main frame body (2), a proximity switch (3), a lifting steel wire rope (6), a movable rope winding structure (7), a weight-reducing braking steel wire rope (8), a right-angle variable-speed motor (9), a lifting steel wire rope winding structure (10), a balancing weight (11) and an electromagnetic braking rope winding structure (12); the lifting main frame is characterized in that the platform (1) is arranged on the lifting main frame body (2), the left side and the right side of the platform (1) are respectively connected with one ends of two weight-reducing brake steel wire ropes (8) with equal length, the two sides of the top of the lifting main frame body (2) are provided with electromagnetic brake rope winding structures (12), the two weight-reducing brake steel wire ropes (8) are wound around the electromagnetic brake rope winding structures (12) on the left side and the right side of the upper part of the lifting main frame body (2), the other ends of the two weight-reducing brake steel wire ropes are connected to the balancing weight (11), the top of the lifting main frame body (2) is provided with a movable rope winding structure (7), the bottom of the movable rope winding structure (7) is provided with a pulley (72), the lifting steel wire rope (6) is arranged on a rope winding pulley (72) on the lower part of the movable rope winding structure (7), one end of the movable rope winding structure (7) is connected to the lifting steel wire rope winding structure (10) on the bottom of the lifting main frame body (2) after being connected to the platform (1), the proximity switch (3) is arranged on the inner side of the upper part of the lifting main frame body (2) and is positioned on one side of the movable rope winding structure (7), and the right-angle variable-speed motor (9) is arranged on one side of the lifting steel wire rope winding structure (10).
2. A safety device for a lifting platform according to claim 1, wherein: the side of the side frame body of the lifting main frame body (2) is provided with a sliding rail (4), and pulleys (5) on the left side and the right side of the platform (1) are connected with the lifting main frame body (2) in a sliding way through the sliding rail (4).
3. A safety device for a lifting platform according to claim 1, wherein: the electromagnetic braking rope winding structure (12) comprises an electromagnetic brake (121) and a brake wheel (122), wherein the electromagnetic brake (121) is connected with the brake wheel (122) through a rotating shaft.
4. A safety device for a lifting platform according to claim 1, wherein: the top of the movable rope winding structure (7) is also provided with a spring (71).
5. A safety device for a lifting platform according to claim 1, wherein: the proximity switch (3) is electrically connected with the electromagnetic brake (121), and a relay is installed in an installation circuit of the proximity switch (3) and the electromagnetic brake (121).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120461043.5U CN214527888U (en) | 2021-03-03 | 2021-03-03 | Safety device of lifting platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120461043.5U CN214527888U (en) | 2021-03-03 | 2021-03-03 | Safety device of lifting platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214527888U true CN214527888U (en) | 2021-10-29 |
Family
ID=78258799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120461043.5U Active CN214527888U (en) | 2021-03-03 | 2021-03-03 | Safety device of lifting platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214527888U (en) |
-
2021
- 2021-03-03 CN CN202120461043.5U patent/CN214527888U/en active Active
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