Movable steel truss lifting appliance

Abstract

The movable steel truss lifting appliance comprises a steel truss, a guide rail, an electric hoist, a connecting seat and a hook assembly, a guide rail and a movable electric hoist are arranged on the bottom side of a cross beam of the door-shaped steel truss, the guide rail is fixed to the bottom side of the cross beam, the electric hoist is connected to the guide rail through a sliding base, the bottom end of the electric hoist is connected with a connecting base, and a hook assembly is installed at the bottom end of the connecting base and comprises a supporting arm, a hook and a driving assembly. An annular groove is formed in the outer side of the hook, an arc-shaped fixing strip is slidably connected into the annular groove, a supporting guide assembly is arranged between the arc-shaped fixing strip and the hook, one end of the arc-shaped fixing strip can be matched with the open end of the hook in an inserted mode, and a driving assembly is arranged between the hook and the supporting arm. According to the lifting appliance, the open end of the hook can be closed and locked, so that an object or a chain can be effectively prevented from being separated during lifting, on the contrary, the locking can be quickly released, and the safety and the stability of the lifting appliance during use are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to steel truss technical field, concretely relates to a mobile steel truss lifting appliance. BACKGROUND

[0002] Steel truss refers to the truss made of steel. The roof structure of industrial and civil buildings, crane beam, bridge and hydraulic gate, etc. often use steel truss as the main load-bearing component. Various towers, such as mast tower, television tower and power transmission line tower, etc. often use space steel truss composed of three, four or more plane trusses. The lifting appliance refers to the device for lifting heavy objects in hoisting machinery. The most commonly used lifting appliance for lifting component objects is lifting hook, lifting belt, and other lifting rings, lifting suction cups, tongs and forks, etc. It is widely used in hoisting industry and can be used with steel truss to lift objects.

[0003] At present, the lifting appliance on the existing mobile steel truss is mainly composed of steel truss and electric hoist installed thereon. The object is lifted by the hook on the electric hoist, and the lifting operation is realized. Since the hook on the electric hoist is usually hook-shaped and has an opening at the side end, whether the object is directly hung or lifted with a chain, the object or chain is easily separated from the opening end during transportation, which greatly affects the safety and stability of the lifting appliance during use. UTILITY MODEL CONTENTS

[0004] The utility model aims to provide a mobile steel truss lifting appliance, which can close and lock the opening end of the hook, thereby effectively preventing the object or chain from separating during lifting, greatly improving the safety and stability of the lifting appliance during use, to solve the above-mentioned deficiencies in the art.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a mobile steel truss lifting appliance, which comprises a steel truss, a guide rail and an electric hoist. The steel truss comprises a vertical column and a crossbeam, and the crossbeam is erected on the top of the corresponding vertical column. The crossbeam bottom side of the steel truss is provided with a guide rail and a movable electric hoist. The guide rail is fixed on the crossbeam bottom side, and the electric hoist is connected to the guide rail through a sliding seat. The key technology is that the lifting appliance further comprises a connecting seat and a hook assembly. The connecting seat is connected to the bottom end of the electric hoist, and the bottom end of the connecting seat is provided with a hook assembly. The hook assembly comprises a support arm, a hook, a driving assembly, an arc-shaped fixing strip and a support guide assembly. The top end of the support arm is connected to the bottom end of the connecting seat, and the bottom end is connected to the hook. The driving assembly is arranged between the hook and the support arm. The outer side of the hook is provided with an annular groove, and the arc-shaped fixing strip is slidably connected to the inner side of the annular groove. The support guide assembly is arranged between the arc-shaped fixing strip and the hook, and one end of the arc-shaped fixing strip is inserted into the opening end of the hook.

[0007] The steel truss is a portal structure, two beams are arranged in parallel, a guide rail and an electric hoist are arranged on the bottom side of one of the beams, one vertical column is arranged in parallel on each end of each beam, and a plurality of connecting rods are arranged in parallel on the vertical columns on the same side of the two ends of the beam.

[0008] The vertical column of the steel truss is provided with a traveling wheel.

[0009] The support and guide assembly comprises a guide strip and a receiving cavity, the receiving cavity is symmetrically arranged at both ends of the inner side of the hook, both ends of the arc-shaped fixed strip extend into the receiving cavity, and the guide strips are symmetrically connected on both sides.

[0010] The driving assembly comprises an arc-shaped rack, a gear and a driving motor, the arc-shaped rack is fixedly connected to the outer side of the arc-shaped fixed strip, the driving motor is fixedly connected to the side wall of the support arm, the output end of the driving motor is connected with the gear through the support arm, and the bottom end of the gear is engaged with the arc-shaped rack.

[0011] The driving motor is externally provided with a protective cover.

[0012] The top end of the support arm is provided with a plug column, the bottom end of the connecting seat is provided with a plug slot matched with the plug column, the plug column is inserted into the plug slot in a plug-in fit, and a fixing assembly is arranged between the connecting seat and the plug column, and the connecting seat and the plug column on the support arm are connected through the fixing assembly.

[0013] The fixing assembly comprises a threaded column and a nut, the threaded column is connected between the connecting seat and the plug column in a penetrating mode, the two ends of the threaded column are symmetrically provided with the nuts, the two sides of the connecting seat are symmetrically provided with first threaded holes matched with the threaded column, and the side wall of the plug column is provided with second threaded holes matched with the threaded column.

[0014] Compared with the prior art, the utility model has the advantages of the following beneficial effects:

[0015] 1、 the utility model discloses a structure of arc-shaped rack, arc-shaped fixed strip, receiving cavity, guide strip and driving assembly are set up on the hook, can make the driving assembly drive arc-shaped fixed strip and guide strip move and be inserted in the other end of hook, can close and lock the open end of hook, can effectively prevent the separation of article or chain when hoisting, vice versa can also quickly release locking, greatly improve the safety and stability when the lifting appliance is used.

[0016] 2、 the utility model discloses a structure of plug column, plug slot, threaded column and first threaded hole, can firmly support the support arm on the connecting seat, vice versa can also separate the support arm and the connecting seat, then can realize the disassembly of hook, convenient replacement and maintenance, greatly improve the use effect of device. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the whole structure schematic diagram of the utility model.

[0018] Figure 2 Figure 1 is a schematic view of the connection structure of the connecting seat and the hook of the present utility model;

[0019] Figure 3 Figure 2 is a schematic view of the separation structure of the connecting seat and the hook of the present utility model;

[0020] Figure 4 Figure 3 is a longitudinal sectional view of the hook of the present utility model.

[0021] Mark explanation:

[0022] 1, steel truss; 2, guide rail; 3, electric hoist; 4, hook; 5, connecting seat; 6, insertion column; 7, support arm; 8, insertion slot; 9, threaded column; 10, first threaded hole; 11, second threaded hole; 12, nut; 13, annular groove; 14, arc-shaped rack; 15, gear; 16, driving motor; 17, guide bar; 18, arc-shaped fixed bar; 19, storage cavity. Specific implementation:

[0023] The present utility model is further described in combination with specific implementation, and the specific implementation is a further description of the principle of the present utility model, which does not limit the present utility model in any way, and the same or similar technology as the present utility model does not exceed the protection scope of the present utility model.

[0024] Referring to Figures 1-4 The present utility model provides a mobile steel truss lifting appliance, which comprises a steel truss 1, a guide rail 2, an electric hoist 3, a connecting seat 5 and a hook assembly. The steel truss 1 is of a door-shaped structure and comprises upright columns and cross beams, the cross beams are arranged at the top of the corresponding upright columns, and the bottom of the upright column is provided with a traveling wheel. The bottom side of the cross beam of the steel truss 1 is provided with the guide rail 2 and the movable electric hoist 3, and the guide rail 2 is fixed to the bottom side of the cross beam. In the present embodiment, two cross beams are arranged in parallel on the steel truss 1, and the bottom side of one of the cross beams is provided with the guide rail 2 and the electric hoist 3. One upright column is arranged vertically and in parallel on each end of each cross beam, and a plurality of connecting rods are arranged in parallel and horizontally between the upright columns on the same side of the two ends of the cross beam. The electric hoist 3 is connected to the guide rail 2 through a sliding seat, the bottom end of the electric hoist 3 is connected to the connecting seat 5, and the bottom end of the connecting seat 5 is provided with the hook assembly.

[0025] The hook assembly comprises a support arm 7, a hook 4, a driving assembly, an arc-shaped fixing strip 18, a support guiding assembly, the top end of the support arm 7 is connected with the bottom end of the connecting seat 5, the bottom end is fixedly connected with the hook 4, the driving assembly is arranged between the hook 4 and the support arm 7, an annular groove 13 is formed in the outer side of the hook 4, the arc-shaped fixing strip 18 is slidably connected in the annular groove 13, the support guiding assembly is arranged between the arc-shaped fixing strip 18 and the hook 4, one end of the arc-shaped fixing strip 18 is insertedly connected with the opening end of the hook 4, and the driving assembly is used for driving the arc-shaped fixing strip 18 to move in the annular groove 13. The support guiding assembly comprises a guiding strip 17 and a receiving cavity 19, the receiving cavities 19 are symmetrically formed in the inner sides of the two ends of the hook 4, the two ends of the arc-shaped fixing strip 18 extend into the receiving cavities 19 and are symmetrically connected with the guiding strips 17 on the two sides. The driving assembly comprises an arc-shaped gear rack 14, a gear 15 and a driving motor 16, the arc-shaped gear rack 14 is fixedly connected on the outer side of the arc-shaped fixing strip 18, the driving motor 16 is fixedly connected on the side wall of the support arm 7, the output end of the driving motor 16 is connected with the gear 15 through the support arm 7, and the bottom end of the gear 15 is engaged with the arc-shaped gear rack 14. A protective cover is arranged on the outer side of the driving motor 16, and the driving motor 16 is protected by the protective cover. By starting the driving motor 16, the driving motor 16 drives the gear 15 to rotate, the gear 15 drives the engaged arc-shaped gear rack 14 to move, then the arc-shaped gear rack 14 drives the arc-shaped fixing strip 18 to slide in the annular groove 13 of the hook 4, and the arc-shaped fixing strip 18 drives the guiding strips 17 on the two sides to slide along the receiving cavities 19, so that the arc-shaped fixing strip 18 is stably moved and inserted in the other end of the hook 4, that is, the opening end of the hook 4 is closed and locked, and vice versa.

[0026] A plug column 6 is arranged at the top end of the support arm 7, a plug groove 8 matched with the plug column 6 is formed in the bottom end of the connecting seat 5, the plug column 6 is insertedly connected in the plug groove 8, a fixing assembly is arranged between the connecting seat 5 and the plug column 6, and the plug column 6 on the support arm 7 is connected with the connecting seat 5 through the fixing assembly. The fixing assembly comprises a threaded column 9 and a nut 12, the threaded column 9 is penetrated and connected between the connecting seat 5 and the plug column 6, the two ends of the threaded column 9 are symmetrically provided with the nuts 12, the two sides of the connecting seat 5 are symmetrically provided with first threaded holes 10 matched with the threaded column 9, and the side wall of the plug column 6 is provided with a second threaded hole 11 matched with the threaded column 9. By insertingly connecting the plug column 6 at the top end of the support arm 7 in the plug groove 8 of the connecting seat 5, the support arm 7 and the connecting seat 5 are connected together, then the threaded column 9 is screwed between the first threaded hole 10 of the connecting seat 5 and the second threaded hole 11 of the plug column 6, and then the nuts 12 are screwed on the two ends of the threaded column 9 and abut against the connecting seat 5, so that the support arm 7 is fixed on the connecting seat 5, and vice versa, so that the support arm 7 and the connecting seat 5 can be separated, and the hook 4 can be disassembled and assembled.

Claims

1. A mobile steel truss hoist, the hoist comprising a steel truss (1), a guide rail (2) and an electric hoist (3), the steel truss (1) comprising uprights and cross beams, the cross beams being arranged at the top of the corresponding uprights; the bottom side of the cross beams of the steel truss (1) is provided with the guide rail (2) and the movable electric hoist (3), the guide rail (2) being fixed on the bottom side of the cross beams, and the electric hoist (3) being connected to the guide rail (2) through a sliding seat, characterized in that: The lifting appliance further comprises a connecting seat (5) connected with the bottom end of the electric hoist (3), a hook assembly installed at the bottom end of the connecting seat (5), the hook assembly comprising a supporting arm (7), a hook (4), a driving assembly, an arc-shaped fixing strip (18) and a supporting guide assembly, the top end of the supporting arm (7) being connected with the bottom end of the connecting seat (5), the bottom end of the supporting arm (7) being connected with the hook (4), the driving assembly being arranged between the hook (4) and the supporting arm (7), the outer side of the hook (4) being provided with an annular groove (13), the arc-shaped fixing strip (18) being slidably connected in the annular groove (13), the arc-shaped fixing strip (18) and the hook (4) being provided with the supporting guide assembly, and one end of the arc-shaped fixing strip (18) being insertably connected with the opening end of the hook (4).

2. A mobile steel truss spreader according to claim 1, characterized in that: The steel truss (1) is in a portal structure, and two beams are arranged in parallel, one of the beams is provided with a guide rail (2) and an electric hoist (3) at the bottom side, and one vertical column is arranged at each end of each beam in parallel, and a plurality of connecting rods are arranged in parallel and horizontally between the vertical columns on the same side of the two ends of the beam.

3. The mobile steel truss spreader of claim 1, wherein: The vertical column of the steel truss (1) is provided with a traveling wheel at the bottom.

4. The mobile steel truss spreader of claim 1, wherein: The supporting guide assembly comprises a guide strip (17) and a receiving cavity (19), the receiving cavity (19) is symmetrically arranged at both ends of the inner side of the hook (4), both ends of the arc-shaped fixing strip (18) extend into the receiving cavity (19) and are symmetrically connected with the guide strips (17) on both sides.

5. The mobile steel truss spreader of claim 1, wherein: The driving assembly comprises an arc-shaped rack (14), a gear (15) and a driving motor (16), the arc-shaped rack (14) is fixedly connected to the outer side of the arc-shaped fixing strip (18), the driving motor (16) is fixedly connected to the side wall of the supporting arm (7), the output end of the driving motor (16) passes through the supporting arm (7) and is connected with the gear (15), and the bottom end of the gear (15) is engaged with the arc-shaped rack (14).

6. A mobile steel truss spreader according to claim 5, characterized in that: The driving motor (16) is provided with a protective cover.

7. The mobile steel truss spreader of claim 1, wherein: The top end of the supporting arm (7) is provided with a plug column (6), the bottom end of the connecting seat (5) is provided with a plug groove (8) matched with the plug column (6), the plug column (6) is insertably connected in the plug groove (8), a fixing assembly is arranged between the connecting seat (5) and the plug column (6), and the connecting seat (5) and the plug column (6) on the supporting arm (7) are connected through the fixing assembly.

8. A mobile steel truss spreader according to claim 7, characterized in that: The fixing assembly comprises a threaded column (9) and a nut (12), the threaded column (9) is connected between the connecting seat (5) and the plug column (6), the threaded column (9) is symmetrically provided with the nut (12) at both ends, the connecting seat (5) is symmetrically provided with a first threaded hole (10) matched with the threaded column (9) at both sides, and the side wall of the plug column (6) is provided with a second threaded hole (11) matched with the threaded column (9).

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