Hand-push type cantilever hoisting device

Abstract

The utility model discloses a hand-push type cantilever hoisting device, and relates to the technical field of pipe hoisting. Comprising a chassis, a bottom vertical frame, a top triangular rotating frame, a lifting appliance, a winding drum transmission box and a weight box, the bottom vertical frame comprises a pushing handle and a first central hollow cylinder vertical rod, and the top triangular rotating frame comprises a second central hollow cylinder vertical rod; the bottom of the second central hollow cylinder vertical rod is connected with a connecting shaft pressure plate, the connecting shaft pressure plate is provided with a thrust ball bearing, the thrust ball bearing is rotatably connected to the top of the first central hollow cylinder vertical rod, and a shaft of the connecting shaft pressure plate extends to the thrust ball bearing and is in clearance fit with an inner cavity of the first central hollow cylinder vertical rod; one end of the lifting appliance is connected with the winding drum transmission case, and the other end sequentially bypasses the first guide rope pulley and the second guide rope pulley; the mold lifting device is compact in structure, free to move, convenient to use and suitable for being used for lifting in occasions with small space, and solves the problem that a mold is difficult to lift in the occasions with the small space in a plastic pipe extrusion production line.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe hoisting, in particular to a hand-pushed cantilever hoisting device. Background Art

[0002] In the plastic pipe production line, the mold is usually extruded and then cooled by cooling equipment, and then rolled and packaged to complete the production. In the workshop of the plastic pipe extrusion production line, the mold is usually replaced by an overhead crane. However, for small workshops, due to the space environment, it is not enough to install the overhead crane, nor is it enough to operate the overhead crane, which makes the mold replacement or installation and disassembly time-consuming and labor-intensive, and there are certain safety risks. Utility Model Content

[0003] The utility model overcomes the shortcomings of the prior art and provides a hand-push cantilever hoisting device to solve the problem of difficulty in hoisting the mold of a plastic pipe extrusion production line in a small space.

[0004] In order to achieve the above purpose, the utility model is implemented through the following technical solutions.

[0005] A hand-pushed cantilever lifting device comprises a chassis, a bottom frame, a top triangular rotating frame, a sling, a drum transmission box, and a counterweight box; a walking mechanism is arranged at the bottom of the chassis, and the bottom frame, the drum transmission box and the counterweight box are all arranged on the chassis; the bottom frame comprises a pushing handle and a first central hollow cylinder upright pole, the first central hollow cylinder upright pole is vertically connected to the chassis, one end of the pushing handle is connected to the first central hollow cylinder upright pole, and the other end is connected to the chassis through a supporting column; the top triangular rotating frame comprises a second central hollow cylinder upright pole, a coupling pressure plate and a pushing handle The second center hollow cylinder pole is provided with a coupling pressure plate at the bottom, and a thrust ball bearing is installed on the coupling pressure plate. The thrust ball bearing is rotatably connected to the top of the first center hollow cylinder pole, and the shaft of the coupling pressure plate extends to the gap between the thrust ball bearing and the inner cavity of the first center hollow cylinder pole; the top of the second center hollow cylinder pole is connected to the first guide rope pulley, and the second center hollow cylinder pole is connected to a cantilever beam, and the end of the cantilever beam is connected to the second guide rope pulley; one end of the sling is connected to the drum transmission box, and the other end passes around the first guide rope pulley and the second guide rope pulley in turn.

[0006] Furthermore, a first diagonal brace is connected between the pushing handle and the first central hollow tube upright pole.

[0007] Furthermore, a second diagonal brace is connected between the second central hollow tube upright pole and the cantilever cross beam; both the cantilever cross beam and the second diagonal brace are provided with through holes allowing the hanger to pass through.

[0008] Furthermore, a ring tray is connected to the top of the first central hollow tube upright, and a thrust ball bearing is rotatably connected to the ring tray.

[0009] Furthermore, the second central hollow cylinder upright is connected with a semicircular steering wheel.

[0010] Furthermore, the sling includes a wire rope and a hook clamp; one end of the wire rope is connected to the drum of the drum transmission box, and the other end is passed around the first guide rope pulley and the second guide rope pulley in sequence and connected to the hook clamp.

[0011] Furthermore, the reel transmission box has a built-in drive variable speed motor, a reel and an electromagnetic brake block. The reel transmission box is fixed to the front of the chassis by bolts. An electric control wire outlet hole is also opened above the reel transmission box. The electric control part includes wires and buttons.

[0012] Furthermore, the counterweight box is arranged at the rear of the chassis and below the bottom frame.

[0013] Furthermore, the walking mechanism includes two universal wheels arranged at the front end below the chassis, and two fixed wheels arranged at the rear end below the chassis.

[0014] The beneficial effects of the utility model compared with the prior art are:

[0015] The hand-pushed cantilever lifting device described in the utility model is suitable for replacing the lifting of molds in the occasion where there is no overhead crane in the workshop of the plastic pipe extrusion production line. It has a compact structure, is easy to move, is easy to use, reduces the labor intensity of installing and disassembling the mold, and is safe and reliable.

[0016] When in use, push the hand-pushed cantilever lifting device described in the utility model to the place where the mold is placed, connect the mold with a hook, press the electric control button to lift, turn on the power to release the electromagnetic brake block, start the reel transmission box, and when the mold is lifted to a certain height, press the stop button, turn off the power to let the electromagnetic brake block hold the reel tightly. Use the two pushing handles set above the bottom frame to push the cantilever lifting device to the extruder head. According to the center height of the extruder head, start the reel transmission box again, lift the mold to a suitable height, and use the semicircular steering wheel on the center empty cylinder upright of the top triangular rotating frame to rotate and adjust the left and right positions, so as to achieve docking and installation of the mold and the extruder head, and the installation process is smooth and safe. Since the hand-pushed cantilever lifting device has a compact structure, is easy to move, and is easy to use, it can also be used for lifting in other occasions with smaller spaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the hand-pushed cantilever hoisting device of the utility model;

[0018] Figure 2 for Figure 1 AA view;

[0019] In the figure: 1-chassis, 2-reel transmission box, 21-electric control outlet hole, 22-button, 23-rectangular rope hole, 3-counterweight box, 41-promoting handle, 42-first center hollow cylinder pole, 43-support column, 44-first diagonal brace, 45-annular tray, 51-second center hollow cylinder pole, 52-coupling pressure plate, 53-thrust ball bearing, 54-cantilever beam, 55-second diagonal brace, 57-semicircular steering wheel, 6-first guide rope pulley, 7-second guide rope pulley, 81-wire rope, 82-hook fixture, 9-universal wheel, 10-directional wheel. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail in combination with the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. The technical solution of the present invention is described in detail below in combination with the embodiments and the accompanying drawings, but the scope of protection is not limited thereto.

[0021] See also Figure 1 and Figure 2 This embodiment proposes a hand-pushed cantilever lifting device, including a chassis 1, a bottom frame, a top triangular rotating frame, a sling, a drum transmission box 2, and a counterweight box 3; a walking mechanism is arranged at the bottom of the chassis 1, and the walking mechanism includes two universal wheels 9 arranged at the front end below the chassis 1, and two directional wheels 10 arranged at the rear end below the chassis 1. The lifting device can be conveniently moved to the position where it needs to be lifted through the walking mechanism. The bottom frame, the drum transmission box 2 and the counterweight box 3 are all arranged on the chassis 1; the drum transmission box 2 has a built-in drive variable speed motor, a drum and an electromagnetic brake block, and the drum transmission box 2 is fixed to the front of the chassis 1 by bolts. An electric control outlet hole 21 and a rectangular rope hole 23 are also opened above the drum transmission box 2, and the electric control part includes wires and buttons 22. The counterweight box 3 is arranged at the rear of the chassis 1 and is located below the bottom frame.

[0022] The bottom frame includes two push handles 41 and a first central hollow tube pole 42, the first central hollow tube pole 42 is vertically connected to the chassis 1, one end of the push handle 41 is connected to the first central hollow tube pole 42, and the other end is connected to the chassis 1 through a support column 43; a first diagonal brace 44 is connected between the push handle 41 and the first central hollow tube pole 42. A ring tray 45 is connected to the top of the first central hollow tube pole 42.

[0023] The top triangular rotating frame includes a second central hollow cylinder upright pole 51, a coupling pressure plate 52 and a thrust ball bearing 53; the second central hollow cylinder upright pole 51 is welded with a coupling pressure plate 52 at the bottom, and a thrust ball bearing 53 is installed on the coupling pressure plate 52, and the thrust ball bearing 53 is rotatably connected to the annular tray 45 at the top of the first central hollow cylinder upright pole 42. The shaft of the coupling pressure plate 52 extends to the gap between the thrust ball bearing 53 and the inner cavity of the first central hollow cylinder upright pole 42; the second central hollow cylinder upright pole 51 is connected to a semicircular steering wheel 57. The top of the second central hollow cylinder upright pole 51 is connected to the first guide rope pulley 6, and the second central hollow cylinder upright pole 51 is connected to a cantilever beam 54, and the end of the cantilever beam 54 is connected to the second guide rope pulley 7.

[0024] A second diagonal brace 55 is connected between the second central hollow tube upright pole 51 and the cantilever cross beam 54 ; both the cantilever cross beam 54 and the second diagonal brace 55 are provided with through holes allowing the hanger to pass through.

[0025] The sling includes a wire rope 81 and a hook fixture 82; one end of the wire rope 81 is connected to the drum of the drum transmission box 2, and the other end passes through the rectangular rope hole 23, the hole and passes around the first guide rope pulley 6, the second guide rope pulley 7 in turn and is connected to the hook fixture 82.

[0026] The working principle of the hand-pushed cantilever lifting device described in this embodiment is as follows:

[0027] Move the hand-pushed cantilever hoisting device to the place where the mold is placed, connect the mold with the hook fixture 82, press the lifting key of the electronically controlled button 22, the electromagnetic brake block is released when the power is turned on, and the reel transmission box 2 is started. When the mold is lifted to a certain height, press the stop button, and the electromagnetic brake block is turned off to hold the reel tightly. Use the two pushing handles 41 set above the bottom frame to push the cantilever hoisting device as a whole to the extruder head. According to the center height of the extruder head, start the reel transmission box 2 again, lift the mold to a suitable height, and use the semicircular steering wheel 57 on the second center hollow cylinder upright 51 of the top triangular rotating frame to rotate and adjust the left and right positions to achieve the docking installation of the mold and the extruder head. The installation process is smooth and safe. Because the hand-pushed cantilever hoisting device has a compact structure, is easy to move, and is easy to use, it can also be used for hoisting in other occasions with smaller spaces.

[0028] The above content is a further detailed description of the utility model in combination with a specific preferred implementation method. It cannot be determined that the specific implementation methods of the utility model are limited to this. For ordinary technicians in the technical field to which the utility model belongs, they can make several simple deductions or substitutions without departing from the utility model, which should be regarded as belonging to the utility model and the scope of patent protection determined by the submitted claims.

Claims

1. A hand-pushed cantilever lifting device, characterized in that: The invention comprises a chassis (1), a bottom frame, a top triangular rotating frame, a sling, a drum transmission box (2), and a counterweight box (3); a walking mechanism is arranged at the bottom of the chassis (1); the bottom frame, the drum transmission box (2), and the counterweight box (3) are all arranged on the chassis (1); the bottom frame comprises a pushing handle (41) and a first central hollow cylinder upright pole (42); the first central hollow cylinder upright pole (42) is vertically connected to the chassis (1); one end of the pushing handle (41) is connected to the first central hollow cylinder upright pole (42), and the other end is connected to the chassis (1) through a supporting column (43); the top triangular rotating frame comprises a second central hollow cylinder upright pole (51), a connecting shaft pressure plate (52), and a thrust ball bearing (53); the first The bottom of the second center hollow cylinder pole (51) is connected to a coupling pressure plate (52), and a thrust ball bearing (53) is installed on the coupling pressure plate (52). The thrust ball bearing (53) is rotatably connected to the top of the first center hollow cylinder pole (42), and the shaft of the coupling pressure plate (52) extends to the gap between the thrust ball bearing (53) and the inner cavity of the first center hollow cylinder pole (42); the top of the second center hollow cylinder pole (51) is connected to a first guide rope pulley (6), and the second center hollow cylinder pole (51) is connected to a cantilever beam (54), and the end of the cantilever beam (54) is connected to a second guide rope pulley (7); one end of the sling is connected to the drum transmission box (2), and the other end is passed around the first guide rope pulley (6) and the second guide rope pulley (7) in sequence.

2. A hand-pushed cantilever hoisting device according to claim 1, characterized in that: A first diagonal brace (44) is connected between the pushing handle (41) and the first central hollow tube upright pole (42).

3. A hand-pushed cantilever hoisting device according to claim 1, characterized in that: A second diagonal brace (55) is connected between the second central hollow tube upright pole (51) and the cantilever cross beam (54); both the cantilever cross beam (54) and the second diagonal brace (55) are provided with through holes allowing the hanging device to pass through.

4. A hand-pushed cantilever hoisting device according to claim 1, characterized in that: The top of the first central hollow tube upright (42) is connected to an annular tray (45), and a thrust ball bearing (53) is rotatably connected to the annular tray (45).

5. The hand-pushed cantilever hoisting device according to claim 1, characterized in that: The second central hollow cylinder upright (51) is connected to a semicircular steering wheel (57).

6. A hand-pushed cantilever hoisting device according to claim 1, characterized in that: The lifting device comprises a steel wire rope (81) and a hook clamp (82); one end of the steel wire rope (81) is connected to the drum of the drum transmission box (2), and the other end of the steel wire rope is passed through the first guide rope pulley (6) and the second guide rope pulley (7) in sequence and connected to the hook clamp (82).

7. The hand-pushed cantilever hoisting device according to claim 1, characterized in that: The reel transmission box (2) has a built-in drive variable speed motor, a reel and an electromagnetic brake block. The reel transmission box (2) is fixed to the front of the chassis (1) by bolts. An electric control wire outlet hole (21) is also opened above the reel transmission box (2). The electric control part includes wires and buttons (22).

8. A hand-pushed cantilever hoisting device according to claim 7, characterized in that: The counterweight box (3) is arranged at the rear of the chassis (1) and is located below the bottom frame.

9. The hand-pushed cantilever hoisting device according to claim 1, characterized in that: The walking mechanism comprises two universal wheels (9) arranged at the front end below the chassis (1), and two directional wheels (10) arranged at the rear end below the chassis (1).

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