Hand-operated elevator

Abstract

The utility model relates to the technical field of lifters and discloses a hand-operated lifter which comprises a base, a supporting frame is fixedly installed on the top of the base, a fixed sliding plate is connected to the outer side of the supporting frame in a sliding mode, and a pallet is fixedly installed on one side of the fixed sliding plate. An anti-falling lifting assembly and a supporting and extending assembly are arranged between the pallet and the base. According to the technical scheme, the anti-falling lifting assembly is arranged, specifically, when a steel wire rope is broken, a tension spring can pull a movable pull rod, then the two ends of the movable pull rod can pull the upper half portion of a movable clamping rod, the bottom end of the movable clamping rod expands outwards instantly, then the movable clamping rod is clamped into a tooth groove, and a fixed sliding plate is supported; therefore, the pallet is prevented from continuously falling, and goods damage and personnel injury caused by sudden falling are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to a hand-operated elevator. Background Art

[0002] A hand-operated elevator, usually called a manual elevator, is a device that uses human power or manual operation to lift and lower goods or people. It is usually used in some light and small-scale occasions, such as warehouses, factories, stores, etc. This device is usually more economical than an electric elevator and does not require additional power facilities. Its principle is to rotate the gear system by hand operation to achieve the lifting and lowering of goods or people.

[0003] The hand-operated elevator usually uses the method of wire rope winding to lift and lower the lifting platform board. However, during the lifting process, the wire rope will be worn, and after long-term use, the wire rope is prone to breakage, resulting in an abrupt drop of the platform board, and the goods or people are likely to fall from the platform board, causing danger. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a hand-operated elevator to solve the problem that in the prior art, the hand-operated elevator usually uses the method of wire rope winding to lift and lower the lifting platform board. However, during the lifting process, the wire rope will be worn, and after long-term use, the wire rope is prone to breakage, resulting in an abrupt drop of the platform board, and the goods or people are likely to fall from the platform board, causing danger.

[0005] In view of this, the utility model provides a hand-operated elevator, including a base, a support frame is fixedly installed on the top of the base, a fixed sliding plate is slidably connected to the outside of the support frame, a cargo board is fixedly installed on one side of the fixed sliding plate, and an anti-falling lifting component and a support extension component are arranged between the cargo board and the base;

[0006] The anti-falling lifting component includes a plurality of movable clamping rods, movable waist holes, movable pull rods, tension springs, tooth grooves, pulleys, wire ropes, winding rollers and a manual elevator gearbox. The inner side of one end of the fixed sliding plate is rotatably connected to the 1 / 3 position of the movable clamping rod. The movable waist hole is opened on the inner side of one end of the movable clamping rod. One end of the movable pull rod is slidably connected to the inner side of the movable waist hole. The tension spring is fixedly installed between the movable pull rod and the fixed sliding plate. The tooth groove is opened on the inner side of the support frame. The pulley is fixedly installed on the inner side of the top of the support frame. One end of the wire rope is fixedly connected to the middle of the movable pull rod. The winding roller is rotatably connected to the top of the base. The manual elevator gearbox is fixedly installed at one end of the winding roller. The other end of the wire rope is fixedly installed on the outer wall of the winding roller.

[0007] Optionally, a plurality of the movable clamping rods are located on the inner sides of both ends of the fixed sliding plate.

[0008] Optionally, one end of the movable drawbar has a shape matching that of the tooth groove.

[0009] Optionally, one end of the tension spring is fixedly installed inside one end of the movable drawbar, and the other end of the movable drawbar is fixedly installed inside the support frame.

[0010] Optionally, the middle part of the steel wire rope is movably installed inside the pulley.

[0011] Optionally, the output end of the gearbox of the manual lift is fixedly installed at one end of the rotating shaft of the winding roller.

[0012] Optionally, the support extension assembly includes an extension rod and a screw foot. One end of the extension rod is rotatably connected to the top of the base, and the screw foot is threadedly connected to one end of the extension rod.

[0013] It can be seen from the above technical solutions that the embodiments of the present invention have the following advantages:

[0014] 1. For the hand-cranked lift of the present invention, by setting the anti-falling lift assembly, specifically, when the steel wire rope breaks, the tension spring will pull the movable drawbar, and then both ends of the movable drawbar will pull the upper half of the movable latch, causing the bottom end of the movable latch to expand outward instantly, and then snap into the tooth groove to form a support for the fixed slide plate, thereby preventing the cargo board from continuing to fall and avoiding damage to goods and injury to personnel caused by a sudden drop.

[0015] 2. For the hand-cranked lift of the present invention, by setting the support extension assembly, specifically, during use, the extension rod is unfolded, and then the screw foot is adjusted so that its bottom supports the ground, expanding the support area of the base, thereby improving the stability of the lift during use.

[0016] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following further describes the present invention with reference to the drawings:

[0018] Figure 1 is a schematic front view structure diagram of the present invention;

[0019] Figure 2 is a schematic rear view structure diagram of the present invention;

[0020] Figure 3 is a partial cross-sectional view of the rear side of the present invention;

[0021] Figure 4 is an unfolded view of the support assembly of the present invention.

[0022] Description of reference numerals: 1, base; 2, support frame; 3, fixed sliding plate; 4, cargo board; 501, movable clamping rod; 502, movable waist-shaped hole; 503, movable pull rod; 504, tension spring; 505, tooth groove; 506, pulley; 507, steel wire rope; 508, winding roller; 509, gearbox of manual elevator; 601, extension rod; 602, screw support foot. Detailed implementation manners

[0023] The technical solutions of the embodiments of the present invention will be explained and described below with reference to the accompanying drawings of the embodiments of the present invention. However, the following embodiments are only the preferred embodiments of the present invention and not all of them. Based on the embodiments in the implementation manners, other embodiments obtained by those skilled in the art without creative efforts all fall within the protection scope of the present invention.

[0024] The following will specifically describe a hand-cranked elevator according to an embodiment of the present invention with reference to the accompanying drawings.

[0025] Embodiment 1

[0026] For ease of understanding, please refer to Figures 1 to 4 , an embodiment of a hand-cranked elevator provided by the present invention includes a base 1, a support frame 2 is fixedly installed on the top of the base 1, a fixed sliding plate 3 is slidably connected to the outside of the support frame 2, a cargo board 4 is fixedly installed on one side of the fixed sliding plate 3, and an anti-falling lifting component and a support extension component are arranged between the cargo board 4 and the base 1;

[0027] The anti-falling lifting assembly includes a number of movable clamping rods 501, movable waist-shaped holes 502, movable pull rods 503, tension springs 504, tooth grooves 505, pulleys 506, steel wire ropes 507, winding rollers 508 and a manual elevator gearbox 509. The 1 / 3 position of the movable clamping rod 501 is rotatably connected to the inner side of one end of the fixed slide plate 3. The movable waist-shaped hole 502 is opened in the inner side of one end of the movable clamping rod 501. One end of the movable pull rod 503 is slidably connected to the inner side of the movable waist-shaped hole 502. The tension spring 504 is fixedly installed between the movable pull rod 503 and the fixed slide plate 3. The tooth groove 505 is opened in the inner side of the support frame 2. The pulley 506 is fixedly installed on the inner side of the top of the support frame 2. One end of the steel wire rope 507 is fixedly connected to the middle of the movable pull rod 503. The winding roller 508 is rotatably connected to the top of the base 1. The manual elevator gearbox 509 is fixedly installed at one end of the winding roller 508. The other end of the steel wire rope 507 is fixedly installed on the outer wall of the winding roller 508. A number of movable clamping rods 501 are located on the inner sides of both ends of the fixed slide plate 3. The shape of one end of the movable pull rod 503 matches the shape of the tooth groove 505. One end of the tension spring 504 is fixedly installed on the inner side of one end of the movable pull rod 503. The other end of the movable pull rod 503 is fixedly installed on the inner side of the support frame 2. One end of the tension spring 504 is fixedly installed on the inner side of one end of the movable pull rod 503. The other end of the movable pull rod 503 is fixedly installed on the inner side of the support frame 2. The output end of the manual elevator gearbox 509 is fixedly installed at one end of the rotating shaft of the winding roller 508.

[0028] It should be noted that by setting the movable clamping rod 501, the movable waist-shaped hole 502, the movable pull rod 503 and the tension spring 504, when lifting, the manual elevator gearbox 509 is driven by the handle of the manual elevator gearbox 509, and then the winding roller 508 is driven to wind the steel wire rope 507. The steel wire rope 507 is used to pull the movable pull rod 503. Under the action of the movable waist-shaped hole 502, the bottom end of the movable clamping rod 501 can be opened, so that the fixed slide plate 3 can be smoothly driven to rise, so as to lift the people or goods on the cargo board 4. When the set steel wire rope 507 is worn and disconnected, at this time, the movable pull rod 503 loses the upward pulling force, and then the tension spring 504 will pull the movable pull rod 503 to contract. Since the length of the movable pull rod 503 remains unchanged all the time, one end of the movable pull rod 503 will slide downward in the movable waist-shaped hole 502. At this time, it will hold the upper part of the movable clamping rod 501, so that the lower end of the movable clamping rod 501 expands outward and is clamped into the tooth groove 505, forming a support for the fixed slide plate 3, so as to prevent the cargo board 4 from continuing to fall and avoid damage to the goods and injury to the personnel caused by a sudden drop.

[0029] Embodiment 2

[0030] In some embodiments, such as Figure 1 、 Figure 4As shown, the support extension assembly includes an extension rod 601 and a screw foot 602. One end of the extension rod 601 is rotatably connected to the top of the base 1, and the screw foot 602 is threadedly connected to one end of the extension rod 601.

[0031] It should be noted that by providing the extension rod 601 and the screw foot 602, during use, the extension rod 601 is unfolded, and then the screw foot 602 is adjusted so that its bottom supports the ground, expanding the support area of the base 1, thereby improving the stability of the lift during use.

[0032] Working principle: During use, first, the extension rod 601 is unfolded, and then the screw foot 602 is adjusted so that its bottom supports the ground, expanding the support area of the base 1, thereby improving the stability of the lift during use. Then, the manual lift gearbox 509 is driven by the handle of the manual lift gearbox 509, and then the winding roller 508 winds the steel wire rope 507. The steel wire rope 507 is used to pull the movable pull rod 503. Under the action of the movable waist hole 502, the bottom end of the movable latch 501 can be opened, so that the fixed slide plate 3 can be smoothly driven to rise, thereby lifting the people or goods on the cargo board 4. When the provided steel wire rope 507 is worn and disconnected, at this time, the movable pull rod 503 loses the upward pulling force, and then the tension spring 504 will pull the movable pull rod 503 to contract. Since the length of the movable pull rod 503 remains unchanged, one end of the movable pull rod 503 will slide downward in the movable waist hole 502. At this time, the upper part of the movable latch 501 will be pulled, causing the lower end of the movable latch 501 to expand outward and engage in the tooth groove 505, forming a support for the fixed slide plate 3, thereby preventing the cargo board 4 from continuing to fall and avoiding damage to the goods and injury to personnel caused by a sudden drop.

[0033] The above is the case. The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A hand-cranked elevator, characterized in that: It includes a base (1), a support frame (2) is fixedly installed on the top of the base (1), a fixed slide plate (3) is slidably connected to the outside of the support frame (2), a cargo board (4) is fixedly installed on one side of the fixed slide plate (3), and an anti-fall lifting component and a support extension component are arranged between the cargo board (4) and the base (1); The anti-fall lifting component includes a number of movable clamping rods (501), movable waist-shaped holes (502), movable pull rods (503), tension springs (504), tooth grooves (505), pulleys (506), steel wire ropes (507), winding rollers (508) and a manual elevator gear box (509). The 1 / 3 position of the movable clamping rod (501) is rotatably connected to the inner side of one end of the fixed slide plate (3). The movable waist-shaped hole (502) is opened on the inner side of one end of the movable clamping rod (501). One end of the movable pull rod (503) is slidably connected to the inner side of the movable waist-shaped hole (502). The tension spring (504) is fixedly installed between the movable pull rod (503) and the fixed slide plate (3). The tooth groove (505) is opened on the inner side of the support frame (2). The pulley (506) is fixedly installed on the inner side of the top of the support frame (2). One end of the steel wire rope (507) is fixedly connected to the middle of the movable pull rod (503). The winding roller (508) is rotatably connected to the top of the base (1). The manual elevator gear box (509) is fixedly installed at one end of the winding roller (508). The other end of the steel wire rope (507) is fixedly installed on the outer wall of the winding roller (508).

2. The hand-cranked elevator according to claim 1, wherein: A number of the movable clamping rods (501) are located inside both ends of the fixed slide plate (3).

3. A hand-cranked elevator according to claim 1, characterized in that: The shape of one end of the movable pull rod (503) matches the shape of the tooth groove (505).

4. A hand-cranked elevator according to claim 1, wherein: One end of the tension spring (504) is fixedly installed on the inner side of one end of the movable pull rod (503), and the other end of the movable pull rod (503) is fixedly installed on the inner side of the support frame (2).

5. A manual elevator according to claim 1, wherein: The middle of the steel wire rope (507) is movably installed inside the pulley (506).

6. The manual elevator according to claim 1, wherein: The output end of the manual elevator gear box (509) is fixedly installed at one end of the rotating shaft of the winding roller (508).

7. A manual elevator according to claim 1, characterized in that: The support extension component includes an extension rod (601) and a screw foot (602). One end of the extension rod (601) is rotatably connected to the top of the base (1), and the screw foot (602) is threadedly connected to one end of the extension rod (601).

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