CN219730473U

CN219730473U - Lifting device

Info

Publication number: CN219730473U
Application number: CN202320774441.1U
Authority: CN
Inventors: 宋龙伟; 黄馨仪; 徐达; 宋帅; 武迪
Original assignee: Henan Qiyuan Electric Power Survey And Design Co ltd
Current assignee: Henan Qiyuan Electric Power Survey And Design Co ltd
Priority date: 2023-04-10
Filing date: 2023-04-10
Publication date: 2023-09-22
Anticipated expiration: 2033-04-10

Abstract

The utility model discloses a lifting device which comprises a base, guide rails and a steel wire rope, wherein the guide rails are fixedly connected to the top of the base, guide wheels are rotatably connected to the inside of the top end of each guide rail, a lifting table is arranged between the two guide rails, sliding seats are fixedly connected to the two sides of the lifting table, the sliding seats are slidably connected to the inside of each guide rail, and meshing toothed plates and friction plates are fixedly connected to the inner wall of one side, far away from the sliding seats, of each guide rail. The beneficial effects are that: according to the utility model, the engaged toothed plate and the friction plate are arranged in the guide rail, and the lifting table is positioned by matching the arranged limiting component with the engaged toothed plate, so that the lifting table is prevented from falling off in the working process of a worker; through the friction subassembly and the friction plate cooperation that set up, when the elevating platform falls, can effectively cushion and make elevating platform whereabouts speed slow down gradually until stopping, effectively play the guard action.

Description

Lifting device

Technical Field

The utility model relates to the technical field of electric power construction, in particular to a lifting device.

Background

In the power construction process, the lifting platform device is used for vertically conveying constructors or maintenance staff and for conveying tools and parts required for installation and maintenance when the lifting platform device is used for climbing operation.

Through searching, chinese patent publication No. CN213834447U discloses a safe lifting device for electric power construction, wherein a first fixed plate is connected to the inner wall of an inner cavity of a base, an electric hydraulic push rod and a movable plate are fixedly connected to the lower part of the fixed plate, a first fixed frame and a supporting leg are respectively connected to the bottom of the movable plate, the first fixed frame is provided with a first motor, and a first sprocket wheel on an output shaft of the first motor is connected with a second sprocket wheel on the supporting leg; a second fixing frame and a second motor are further connected above the first fixing plate, a winding roller of the second motor is connected with a steel wire rope, and the steel wire rope penetrates through a second through hole of the lifting platform to be connected with a fixed stop block on the second fixing plate, so that the lifting platform is driven to move up and down; the movable plate is driven to move by the electric hydraulic push rod when the lifting table is lifted, so that the movable plate drives the rollers to rotate, the rollers are retracted into the base, the periphery of the base is contacted with the ground, and the device is more stable when the device is stopped; however, the above patent has a risk of breakage of the wire rope and does not have a function of preventing the lifting platform from falling, thereby causing injury to constructors or construction equipment.

Disclosure of Invention

The present utility model has been made to solve the above-mentioned problems, and an object of the present utility model is to provide a lifting device.

The utility model realizes the above purpose through the following technical scheme:

the utility model provides a elevating gear, includes base, guide rail, wire rope, guide rail fixed connection is in the base top, the inside rotation in guide rail top is connected with the guide pulley, two be provided with the elevating platform between the guide rail, elevating platform both sides fixedly connected with sliding seat, sliding seat sliding connection is in the guide rail, the guide rail keep away from fixedly connected with meshing pinion rack and friction plate on the inner wall of sliding seat one side, be provided with in the sliding seat respectively with meshing pinion rack with friction plate complex spacing subassembly and friction subassembly, be provided with elevating system in the base.

Preferably, two friction plates are arranged in one guide rail, and the friction plates are positioned on two sides of the meshing toothed plate.

Preferably, the limiting assembly comprises a first telescopic cylinder and a meshing block, the first telescopic cylinder is fixedly connected inside the sliding seat, the meshing block is fixedly connected on an output shaft of the first telescopic cylinder, and the meshing block is used for meshing with the meshing toothed plate.

Preferably, the friction assembly comprises a second telescopic cylinder, the second telescopic cylinder is fixedly connected inside the sliding seat, an output shaft of the second telescopic cylinder is fixedly connected with a U-shaped frame, an opening end of the U-shaped frame is fixedly connected with two friction blocks, and the two friction blocks correspond to the two friction plates.

Preferably, the lifting mechanism comprises a motor, the motor is fixedly connected to one side of the base, an output shaft of the motor is fixedly connected with a worm, the worm is connected to the inside of the base through a bearing, two sections of threads with opposite directions are arranged on the worm, two worm gears are meshed with the worm through two sections of threads, and a winding wheel is fixedly connected to the front side of the worm gear.

Preferably, the distance between the friction plates in the two guide rails becomes gradually smaller from top to bottom.

The beneficial effects are that: according to the utility model, the engaged toothed plate and the friction plate are arranged in the guide rail, and the lifting table is positioned by matching the arranged limiting component with the engaged toothed plate, so that the lifting table is prevented from falling off in the working process of a worker; through the friction subassembly and the friction plate cooperation that set up, when the elevating platform falls, can effectively cushion and make elevating platform whereabouts speed slow down gradually until stopping, effectively play the guard action.

Additional features and advantages of the utility model will be set forth in the description which follows, or may be learned by practice of the utility model.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the description serve to explain, without limitation, the utility model. In the drawings:

FIG. 1 is a perspective view of a lifting device according to the present utility model;

FIG. 2 is a front view showing the internal structure of a lifting device according to the present utility model;

FIG. 3 is an enlarged view of the structure A of a lifting device according to the present utility model;

fig. 4 is a top view showing the positional relationship between a friction assembly and a friction plate of a lifting device according to the present utility model.

The reference numerals are explained as follows: 1. a base; 2. a guide rail; 201. a guide wheel; 202. engaging the toothed plate; 203. a friction plate; 3. a lifting table; 301. guard bars; 4. a sliding seat; 401. a connecting block; 5. a limit component; 501. a first telescopic cylinder; 502. a meshing block; 6. a friction assembly; 601. a second telescopic cylinder; 602. a U-shaped frame; 603. a friction block; 7. a lifting mechanism; 701. a motor; 702. a worm; 703. a worm wheel; 704. a reel; 8. a wire rope.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to 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 thus should not be construed as limiting the present utility model.

The utility model is further described below with reference to the accompanying drawings:

examples

As shown in fig. 1-4, a lifting device comprises a base 1, a guide rail 2 and a steel wire rope 8, wherein the two guide rails 2 are arranged and welded at the top of the base 1, a guide wheel 201 is rotatably connected to the inside of the top end of the guide rail 2 through a pin shaft, the steel wire rope 8 bypasses the top of the guide wheel 201, a lifting table 3 is arranged between the two guide rails 2, a guardrail 301 is welded at the top of the lifting table 3 to improve the riding safety of people, sliding seats 4 are welded at two sides of the lifting table 3, the sliding seats 4 are slidably connected in the guide rail 2, a connecting block 401 is fixedly connected to the top of the sliding seats 4, one end of the steel wire rope 8 is fixedly connected with the connecting block 401, a speed sensor is arranged on the connecting block 401, whether the lifting table 3 falls rapidly or not is detected through the speed sensor, a meshing toothed plate 202 and a friction plate 203 are fixedly connected to the inner wall of the side of the guide rail 2, which is far away from the sliding seats 4, a limiting component 5 and a friction component 6 which are respectively matched with the meshing toothed plate 202 and the friction plate 203 are arranged in the sliding seats 4, and a lifting mechanism 7 is arranged in the base 1.

In this embodiment, two friction plates 203 are disposed in one guide rail 2, the friction plates 203 are located at two sides of the meshing toothed plate 202, and the limiting assembly 5 can cooperate with the two friction plates 203 at the same time, so as to ensure uniform stress.

In this embodiment, the limiting component 5 includes a first telescopic cylinder 501 and a meshing block 502, the first telescopic cylinder 501 is connected inside the sliding seat 4 through a screw, an output shaft of the first telescopic cylinder 501 extends out of the sliding seat 4, the meshing block 502 is fixedly connected on an output shaft of the first telescopic cylinder 501, meshing teeth are respectively arranged on opposite faces of the meshing block 502 and the meshing toothed plate 202, and the meshing block 502 and the meshing toothed plate 202 are meshed through the meshing teeth, so as to position the lifting platform 3.

In this embodiment, the friction assembly 6 includes a second telescopic cylinder 601, the second telescopic cylinder 601 is connected inside the sliding seat 4 through a screw, an output shaft of the second telescopic cylinder 601 extends out of the sliding seat 4 and is fixedly connected with a U-shaped frame 602, an opening end of the U-shaped frame 602 is fixedly connected with two friction blocks 603, the two friction blocks 603 correspond to the two friction plates 203, and when the lifting platform 3 falls, friction is performed through close contact between the friction blocks 603 and the friction plates 203, so that the lifting platform 3 is decelerated and stopped.

In this embodiment, elevating system 7 includes motor 701, motor 701 passes through bolted connection in base 1 one side, the output shaft of motor 701 has worm 702 through the coupling joint, worm 702 passes through the bearing connection in base 1 inside, be provided with two sections opposite directions's screw thread on the worm 702, worm 702 has two worm wheel 703 through two sections screw thread meshes, worm 702 rotates and will drive two worm wheel 703 reciprocal counter-rotation, worm wheel 703 front side fixedly connected with reel 704, wire rope 8 other end stretches into and twines on reel 704 from base 1 top, reel 704 passes through the pivot and connects inside base 1, worm wheel 703 drives reel 704 rotation and receive the line or pay off.

In this embodiment, the distance between the friction plates 203 in the two guide rails 2 gradually decreases from top to bottom, so that the friction force between the friction blocks 603 and the friction plates 203 gradually increases in the falling process of the lifting platform 3, and the protection effect is improved.

Working principle: the staff stands on the lifting platform 3, the worm 702 is driven to rotate by the motor 701, the worm 702 drives the worm wheel 703 and the winding wheel 704 to rotate, the winding wheel 704 is used for winding wires, the steel wire rope 8 drives the sliding seat 4 to ascend, when the lifting platform 3 moves to a proper position, the first telescopic cylinder 501 drives the meshing block 502 to move, the meshing block 502 is meshed with the meshing toothed plate 202, the lifting platform 3 is positioned, and the lifting platform 3 is kept stable; when the steel wire rope 8 is suddenly broken in the ascending or descending process of the lifting platform 3, the lifting platform 3 falls rapidly, and the speed sensor on the connecting block 401 detects the rapid speed change, so that the second telescopic cylinder 601 drives the U-shaped frame 602 to move, the friction block 603 is tightly attached to the friction plate 203, and the falling speed of the lifting platform 3 is gradually slowed down and finally stopped.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. The utility model provides a lifting device, includes base (1), guide rail (2), wire rope (8), guide rail (2) fixed connection is in base (1) top, its characterized in that: guide pulley (201) is connected with inside rotation in guide rail (2) top, two be provided with elevating platform (3) between guide rail (2), elevating platform (3) both sides fixedly connected with sliding seat (4), sliding seat (4) sliding connection is in guide rail (2), guide rail (2) are kept away from fixedly connected with meshing pinion rack (202) and friction plate (203) on the inner wall of sliding seat (4) one side, be provided with in sliding seat (4) respectively with meshing pinion rack (202) with friction plate (203) complex spacing subassembly (5) and friction subassembly (6), be provided with elevating system (7) in base (1).

2. A lifting device according to claim 1, wherein: two friction plates (203) are arranged in one guide rail (2), and the friction plates (203) are positioned on two sides of the meshing toothed plate (202).

3. A lifting device according to claim 1, wherein: the limiting assembly (5) comprises a first telescopic cylinder (501) and a meshing block (502), the first telescopic cylinder (501) is fixedly connected inside the sliding seat (4), the meshing block (502) is fixedly connected to an output shaft of the first telescopic cylinder (501), and the meshing block (502) is used for meshing with the meshing toothed plate (202).

4. A lifting device according to claim 1, wherein: the friction assembly (6) comprises a second telescopic cylinder (601), the second telescopic cylinder (601) is fixedly connected inside the sliding seat (4), an output shaft of the second telescopic cylinder (601) is fixedly connected with a U-shaped frame (602), two friction blocks (603) are fixedly connected to the opening end of the U-shaped frame (602), and the two friction blocks (603) correspond to the two friction plates (203).

5. A lifting device according to claim 1, wherein: elevating system (7) are including motor (701), motor (701) fixed connection is in base (1) one side, the output shaft fixedly connected with worm (702) of motor (701), worm (702) are in through bearing connection inside base (1), be provided with two sections opposite screw threads on worm (702), worm (702) have two worm wheel (703) through two sections screw thread meshing, worm wheel (703) front side fixedly connected with reel (704).

6. A lifting device according to claim 1, wherein: the distance between the friction plates (203) in the two guide rails (2) gradually decreases from top to bottom.