Portable lifting machine

Abstract

The utility model relates to the field of hoisting machines, and discloses a portable hoisting machine which comprises a power seat, a lifting arm is arranged at the top of the power seat, an adjusting mechanism is fixedly connected to the top of the lifting arm, a hoisting frame is arranged at the top of the adjusting mechanism, two opposite lifting grooves are formed in the bottom of the power seat, and the two opposite lifting grooves are fixedly connected to the top of the lifting arm. According to the portable lifting machine, after the lifting machine is moved to the needed position through the universal wheels, the hydraulic telescopic rods are used for driving the lifting plate and the universal wheels to move into the lifting groove so that the power base can be connected to the ground, the rotating plate can be rotated to be flush with the power base in cooperation with the hinge, and then the lifting plate can be moved to the needed position; the bottom area and weight of the lifting machine are increased by matching with the supporting plate and the counterweight plate, a heavy object in a lifting site can be put into the placing groove to continuously increase the bottom weight, the lifting machine does not need to be fixed by using fixing pieces such as bolts, and the problem that an existing lifting machine is difficult to quickly and stably mount in the lifting site is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of hoists, in particular to a portable hoist. Background Art

[0002] A crane is a mechanical device used to lift objects vertically and move objects horizontally, usually consisting of a lifting mechanism, a traveling mechanism, a control system, etc. Cranes are widely used in the fields of construction, industry, mining, aerospace, etc. They can be used to lift heavy and large objects such as building materials, equipment, and machines.

[0003] The patent with publication number CN215516429U discloses a portable small-sized crane, which comprises a power base and a lifting outer column, wherein the surface of the lifting outer column is movably connected with a lifting inner column, the surface of the lifting inner column is movably connected with a movable block, and the movable block is rotatably connected with a driving shaft inside. The device can limit the object after the object is lifted to a suitable height, and can provide a fulcrum for the operator, so as to facilitate the use of the small-sized crane. However, the device has the problem that the power base is used to control the lifting inner column to move from the top support at the top of the lifting outer column to contact with the roof of the house, and then the material is lifted in cooperation with a series of transmission structures such as a motor. However, directly raising the top support to fix the crane will not only cause a large squeezing force between the lifting inner column and the lifting outer column, but also the top support may not be used to support and fix the crane during actual use, so that it is difficult to meet the lifting of materials of different weights by relying solely on the weight of the power base. For this reason, a portable crane is proposed to solve the problem that the existing crane is difficult to be installed quickly and stably in the lifting site. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a portable hoist to solve the above-mentioned problems.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a portable hoist, comprising a power base, a lifting arm is arranged on the top of the power base, an adjusting mechanism is fixedly connected to the top of the lifting arm, a lifting frame is arranged on the top of the adjusting mechanism, two opposite lifting slots are arranged on the bottom of the power base, a hydraulic telescopic rod and a lifting plate are arranged in the inner cavity of the lifting slot, two universal wheels are fixedly connected to the bottom of the lifting plate, a rotating plate is hinged on the top of the power base, a counterweight plate is fixedly connected to the top of the rotating plate, a support plate is arranged on one side of the counterweight plate, and a placement slot is provided at the bottom of the rotating plate.

[0008] Preferably, the top and bottom of the hydraulic telescopic rod are fixedly connected to the top of the inner cavity of the lifting slot and the lifting plate respectively, and a plurality of guide wheels are arranged in the lifting frame and all pass through the lifting cable.

[0009] Preferably, the rotating plate can be rotated to be flush with the top of the power seat under the action of the hinge, and when the rotating plate is rotated to be flush with the top of the power seat, the bottom of the support plate is flush with the bottom of the power seat, the support plate is fixedly connected to the rotating plate, and an anti-slip pad is fixedly connected to one end of the support plate away from the rotating plate.

[0010] Preferably, the adjustment mechanism includes an adjustment seat fixed on the top of the lifting arm, an adjustment slot is provided on the top of the adjustment seat, an adjustment slider is slidably connected to the inner cavity of the adjustment slot, and the adjustment slider is fixedly connected to the lifting frame.

[0011] Preferably, a screw is provided through the adjustment seat, the screw passes through the adjustment slider and is threadedly connected, one end of the adjustment seat is fixedly connected to a servo motor, and the output shaft of the servo motor is fixedly connected to the screw.

[0012] Preferably, both ends of the power seat and the rotating plate are fixedly connected with a stabilizing sleeve, and the inner cavity of the stabilizing sleeve on the power seat is slidably connected with a connecting plug plate.

[0013] Preferably, one end of the adjustment seat is fixedly connected to a U-shaped support frame, and the inner cavity of the U-shaped support frame is provided with a guide wheel.

[0014] (III) Beneficial effects

[0015] 1. The portable hoist is moved to the desired position by the universal wheel, and then the hydraulic telescopic rod is used to drive the lifting plate together with the universal wheel to move into the lifting slot to ground the power seat, and the hinge is used to rotate the rotating plate to be flush with the power seat, and the support plate and the counterweight plate are used to increase the bottom area and weight of the hoist. The heavy objects in the lifting site can also be placed in the placement slot to continue to increase the weight of the bottom, and there is no need to use bolts and other fixings to fix the hoist, which solves the problem that the existing hoist is difficult to be installed quickly and stably in the lifting site.

[0016] 2. This portable hoist uses a power seat and a lifting arm to raise the lifting frame on the top of the adjustment mechanism to the required lifting position. The servo motor can also be turned on to drive the screw to rotate, and the adjusting slider in the screw-connected adjustment slot can be used to adjust the front and rear positions of the lifting frame on the top of the adjustment seat, so as to facilitate lifting materials at different positions to the required height. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the structural diagram of the utility model;

[0018] Figure 2 This is a cross-sectional view of the power seat of the utility model structure;

[0019] Figure 3 This is the structural diagram of the utility model;

[0020] Figure 4 It is a cross-sectional view of the structural adjustment mechanism of the utility model.

[0021] In the figure: 1. power seat; 2. lifting arm; 3. adjustment mechanism; 301. adjustment seat; 302. adjustment slide; 303. adjustment slider; 304. screw; 305. servo motor; 4. lifting frame; 5. lifting slot; 6. hydraulic telescopic rod; 7. lifting plate; 8. universal wheel; 9. rotating plate; 10. counterweight plate; 11. support plate; 12. placement slot; 13. stabilizing sleeve; 14. connecting plug plate; 15. U-shaped support frame. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example: See Figure 1-4 A portable hoist comprises a power base 1, a lifting arm 2 is arranged on the top of the power base 1, an adjusting mechanism 3 is fixedly connected to the top of the lifting arm 2, a lifting frame 4 is arranged on the top of the adjusting mechanism 3, two relative lifting grooves 5 are arranged on the bottom of the power base 1, a hydraulic telescopic rod 6 and a lifting plate 7 are arranged in the inner cavity of the lifting groove 5, two universal wheels 8 are fixedly connected to the bottom of the lifting plate 7, a rotating plate 9 is hinged on the top of the power base 1, a counterweight plate 10 is fixedly connected to the top of the rotating plate 9, a support plate 11 is arranged on one side of the counterweight plate 10, and a placement groove 12 is opened at the bottom of the rotating plate 9.

[0024] Furthermore, the top and bottom of the hydraulic telescopic rod 6 are fixedly connected to the inner cavity top of the lifting groove 5 and the lifting plate 7 respectively, and a plurality of guide wheels are arranged in the lifting frame 4 and all of them pass through the lifting cable.

[0025] Furthermore, the rotating plate 9 can be rotated to be flush with the top of the power seat 1 under the action of the hinge. When the rotating plate 9 is rotated to be flush with the top of the power seat 1, the bottom of the supporting plate 11 is flush with the bottom of the power seat 1. The supporting plate 11 is fixedly connected to the rotating plate 9, and the end of the supporting plate 11 away from the rotating plate 9 is fixedly connected with an anti-skid pad. The hydraulic telescopic rod 6 in the lifting groove 5 is opened to drive the lifting plate 7 together with the universal wheel 8 to move into the lifting groove 5, so that the power seat 1 is grounded, and then the rotating plate 9 is rotated to be flush with the power seat 1 under the action of the hinge. The anti-skid pad at the bottom of the support plate 11 is used to increase the friction force while supporting the rotating plate 9. The weight of the bottom of the overall crane is increased by the counterweight plate 10, and the heavy objects in the lifting site can be directly placed in the placement groove 12. After continuing to increase the weight to ensure the stability of the lifting, the material can be lifted. There is no need to fix the crane with bolts and other fixings, thereby improving the convenience of moving and installing the crane.

[0026] Furthermore, the adjustment mechanism 3 includes an adjustment seat 301 fixed on the top of the lifting arm 2, an adjustment slot 302 is provided on the top of the adjustment seat 301, an adjustment slider 303 is slidably connected to the inner cavity of the adjustment slot 302, and the adjustment slider 303 is fixedly connected to the lifting frame 4.

[0027] Furthermore, a screw rod 304 is provided through the adjustment seat 301, and the screw rod 304 passes through the adjustment slider 303 and is threadedly connected. A servo motor 305 is fixedly connected to one end of the adjustment seat 301, and the output shaft of the servo motor 305 is fixedly connected to the screw rod 304. The power seat 1 is used in conjunction with the lifting arm 2 to lift the lifting frame 4 on the top of the adjustment mechanism 3 to the desired lifting position. The servo motor 305 can also be turned on to drive the screw rod 304 to rotate, and the adjustment slider 303 in the threaded adjustment slot 302 can be used to adjust the front and rear positions of the lifting frame 4 on the top of the adjustment seat 301, so as to facilitate lifting materials at different positions to the desired height.

[0028] Furthermore, both ends of the power base 1 and the rotating plate 9 are fixedly connected with a stabilizing sleeve 13, and the inner cavity of the stabilizing sleeve 13 on the power base 1 is slidably connected with a connecting plug plate 14. After the rotating plate 9 is flipped to be flush with the power base 1, the connecting plug plate 14 can be inserted into the stabilizing sleeve 13 in the rotating plate 9, thereby connecting the power base 1 and the rotating plate 9 together to ensure the integrity and further improve the stability of this hoist during lifting.

[0029] Furthermore, one end of the adjusting seat 301 is fixedly connected to a U-shaped support frame 15, and a guide wheel is provided in the inner cavity of the U-shaped support frame 15. The guide wheel in the U-shaped support frame 15 can be used to guide the lifting cable, and at the same time, when the lifting frame 4 moves, the cable will not cause friction with the servo motor 305 or the adjusting seat 301, thereby affecting the lifting operation of the material.

[0030] Working principle: When using this portable crane, use the universal wheel 8 to move the power base 1 to the position where the material needs to be lifted, then open the hydraulic telescopic rod 6 in the lifting groove 5 to drive the lifting plate 7 together with the universal wheel 8 to move into the lifting groove 5, so that the power base 1 is grounded, and then the rotating plate 9 is rotated to be flush with the power base 1 under the action of the hinge, and the anti-slip pad at the bottom of the support plate 11 is used to increase the friction while supporting the rotating plate 9. The counterweight plate 10 is used to increase the overall bottom weight of the crane, and the heavy objects in the lifting site can be directly placed in the placement groove 12. After continuing to increase the weight to ensure stable lifting, the material can be lifted. There is no need to use bolts or other fixings to fix the crane, which improves the convenience of moving and installing the crane, and solves the problem that the existing crane is difficult to be quickly and stably installed in the lifting site.

[0031] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A portable hoist, comprising a power base (1), characterized in that: The top of the power seat (1) is provided with a lifting arm (2), the top of the lifting arm (2) is fixedly connected with an adjustment mechanism (3), the top of the adjustment mechanism (3) is provided with a lifting frame (4), the bottom of the power seat (1) is provided with two relative lifting grooves (5), the inner cavity of the lifting groove (5) is provided with a hydraulic telescopic rod (6) and a lifting plate (7), the bottom of the lifting plate (7) is fixedly connected with two universal wheels (8), the top of the power seat (1) is hinged with a rotating plate (9), the top of the rotating plate (9) is fixedly connected with a counterweight plate (10), a support plate (11) is provided on one side of the counterweight plate (10), and a placement groove (12) is provided at the bottom of the rotating plate (9).

2. A portable hoist according to claim 1, characterized in that: The top and bottom of the hydraulic telescopic rod (6) are respectively fixedly connected to the inner cavity top of the lifting groove (5) and the lifting plate (7), and a plurality of guide wheels are arranged in the lifting frame (4) and all of them pass through the lifting cable.

3. A portable hoist according to claim 1, characterized in that: The rotating plate (9) can be rotated to be flush with the top of the power seat (1) under the action of the hinge. When the rotating plate (9) is rotated to be flush with the top of the power seat (1), the bottom of the support plate (11) is flush with the bottom of the power seat (1). The support plate (11) is fixedly connected to the rotating plate (9). An end of the support plate (11) away from the rotating plate (9) is fixedly connected to an anti-slip pad.

4. A portable hoist according to claim 1, characterized in that: The adjustment mechanism (3) comprises an adjustment seat (301) fixed on the top of the lifting arm (2); an adjustment slide groove (302) is provided on the top of the adjustment seat (301); an adjustment slider (303) is slidably connected to the inner cavity of the adjustment slide groove (302); and the adjustment slider (303) is fixedly connected to the lifting frame (4).

5. A portable hoist according to claim 4, characterized in that: The adjustment seat (301) is provided with a screw rod (304) penetrating therethrough, the screw rod (304) penetrates the adjustment slider (303) and is threadedly connected, one end of the adjustment seat (301) is fixedly connected to a servo motor (305), and the output shaft of the servo motor (305) is fixedly connected to the screw rod (304).

6. A portable hoist according to claim 1, characterized in that: Both ends of the power seat (1) and the rotating plate (9) are fixedly connected with a stabilizing sleeve (13), and the inner cavity of the stabilizing sleeve (13) on the power seat (1) is slidably connected with a connecting plug plate (14).

7. A portable hoist according to claim 4, characterized in that: One end of the adjustment seat (301) is fixedly connected to a U-shaped support frame (15), and the inner cavity of the U-shaped support frame (15) is provided with a guide wheel.

Images