CN105540460A - Self-jacking device for jib crane - Google Patents

Abstract

The invention relates to a jib crane self-jacking device, which belongs to the technical field of hoisting machinery. The structure of the present invention includes an introduction platform, an introduction trolley, a foundation chassis, a standard section, a sleeve frame, a jacking platform and a hydraulic jacking mechanism, the foundation chassis is fixedly connected to the ground anchor, and the standard section and the sleeve frame are sequentially connected to the foundation chassis , the hydraulic cylinder is placed inside the standard section, the lower end of the hydraulic cylinder is connected to the foundation chassis, the upper end is connected to the jacking platform, one end of the introduction platform is connected to the foundation chassis, and the other end is connected to the sleeve frame through a tie rod, and the introduction trolley is placed on the introduction platform , the standard section is placed on the imported trolley and introduced; the jacking method of the present invention is that the climbing claws of the jacking platform contact the stepping surface of the standard section, and the self-top lifting is completed by free expansion and contraction of the hydraulic cylinder. The present invention has a simple and reasonable structure, is easy to install and disassemble, and has a stable and quick jacking method. The whole process of jacking is operated on the ground, without high-altitude operations, safe and reliable, and can be widely used in various hoisting machines.

Description

Self-jacking device for jib crane

technical field

The invention relates to a jib crane self-jacking device, in particular to a jib crane self-jacking device with a detachable standard joint, underground jacking and a built-in oil cylinder, belonging to the technical field of hoisting machinery.

Background technique

Generally speaking, the jacking oil cylinder of the jacking device in the prior art is provided on one side, that is, only one side of the climbing frame is provided with a jacking oil cylinder, and the jacking process of the climbing frame is completed through the expansion and contraction of the jacking oil cylinder. Since the jacking oil cylinder is only provided on one side, during the jacking process of the tower crane, the force on the tower body will be unbalanced, resulting in poor jacking stability and accidents.

The patent publication number is CN203079590U, and the Chinese patent on July 24, 2013 discloses a title called "a kind of tower crane and its jacking device". This patent improves the jacking cylinder on one side of the climbing frame in the prior art to symmetrically setting the jacking cylinder on both sides of the climbing frame. Unbalanced forces lead to inclination, but how to achieve synchronous jacking of the double-sided oil cylinders is a major difficulty in this technology, which is not mentioned in this patent, and there is no effective method for the time being, so it still has the above-mentioned defects.

In view of this, how to design a jacking device, which is balanced in force during the jacking process, and the jacking is stable, fast, safe and reliable, is a technical problem urgently needed by those skilled in the art.

Contents of the invention

Aiming at the problems existing in the prior art, the present invention provides a jib crane self-jacking device, which can realize synchronous jacking of both sides of the cylinder, and balance the force during the jacking process, the jacking is stable and fast, and the jacking is fully automatic. The process is all ground operations, no high-altitude operations, safe and reliable, and can be widely used in self-jacking devices for jib cranes on construction sites in various environments.

In order to achieve the above object, the technical solution of the present invention is: a jib crane self-jacking device, including an introduction trolley, an introduction platform, a foundation chassis, a hydraulic jacking cylinder, a jacking platform, a standard section and a sleeve frame;

The foundation chassis is fixedly connected with external ground anchors, and the standard joint and sleeve frame are sequentially connected with the foundation chassis;

A hydraulic jacking cylinder is installed in the standard section;

The lower end of the hydraulic jacking cylinder is connected to the foundation chassis, and the upper end of the hydraulic jacking cylinder is connected to the jacking platform;

One end of the introduction platform is connected to the foundation chassis, and the other end of the introduction platform is connected to the sleeve frame;

The introduction trolley is placed on the introduction platform, and the standard section is placed on the introduction trolley for introduction.

Further, the foundation chassis includes a cross beam, a standard joint support, a sleeve support, a first oil cylinder seat and an inner rail;

There are wire holes at the four ends of the cross beam, and the first oil cylinder seat is located at the center of the cross beam;

The standard joint support and the sleeve support are evenly arranged around the cross beam with the first oil cylinder seat as the center, and the internal rails are arranged on both sides of the first oil cylinder seat.

Further, the standard section includes a standard section U-shaped frame and a standard section single piece;

There are two pairs of rails inside the U-shaped frame of the standard section, and a connecting sleeve and a guide block are installed on the U-shaped frame of the standard section;

The single piece of the standard section is composed of three third transverse webs, two third oblique webs, one anti-torsion bar and six first connecting plates;

Seven through holes are drilled on the connecting surface of the standard section U-shaped frame corresponding to the standard section single piece, and the standard section U-shaped frame and the standard section single piece are connected by bolts or pins.

Further, the sleeve includes a second main chord, a fourth transverse web, a fourth diagonal web, four second connecting plates and four guide wheels;

The lower ends of both sides of the sleeve frame are provided with standard joint introduction openings, the four guide wheels are fixedly connected to the inner side of the sleeve frame, and the four connecting plates are fixedly connected to the lower end of the second main chord.

Further, the jacking platform includes a jacking frame, a second oil cylinder seat, crawling claws and rollers;

The jacking frame is composed of two long beams, two short beams, a middle beam, four fifth oblique web bars, four guide plates and eight climbing claw connection ears;

The long beam and the short beam are sequentially connected end to end to form a frame, the cross beam is fixed in the middle of the frame, the four fifth oblique web bars are evenly distributed in the frame, and the four guide plates are symmetrically arranged in pairs on the long beam superior;

The eight climbing claw connecting ears are fixedly installed around the frame in pairs. Eight described rollers are installed on the guide plate.

Further, the introduction platform includes two introduction tracks, two first cross-web bars, a second diagonal web bar, an outer beam, two rib plates, two lug plates, two tie rods and two adjustment rods device;

The first cross-web bar and the first oblique web bar are welded to the lower surface of the lead-in track; the outer beam is welded to the outer end of the lead-in track; the ribs are respectively connected to the lead-in track and the outer beam; at both ends of the outer beam;

One end of the pull rod is connected with the ear plate, and the other end of the pull rod is connected with the adjusting rod device.

Further, the adjusting rod device includes two connecting ear plates, a screw rod, a nut and a connecting plate;

A through hole is drilled on the connecting plate, one end of the screw rod passes through the through hole and is connected with a nut, and the other end of the screw rod is welded between two connecting ear plates.

Further, the introduction trolley includes a trolley frame and four introduction wheels;

The four introduction wheels are fixed on the trolley frame;

The trolley frame is welded by two main girders, two long oblique rods, two short oblique rods, two beams, four support plates, four columns, ten rib plates and four stepped shafts.

A jacking method of a jib crane self-jacking device, the jacking method comprising the following steps:

1) The climbing claws of the jacking platform are in contact with the stepping surface of the standard section, and the hydraulic jacking cylinder is controlled by the speed regulating valve to expand and contract freely;

2) The hydraulic jacking cylinder is placed between the foundation chassis and the jacking platform, and the advance and retreat speed of the hydraulic oil on the working oil circuit of the oil cylinder is controlled by the forward speed regulating valve and the reverse speed regulating valve, so as to realize the lifting of the oil cylinder of jacking.

Further, when the jacking method introduces the standard section, the standard section is split into a standard section U-shaped frame and a standard section single piece,

Among them, the standard section U-shaped frame is placed on the introduction trolley and introduced from the front, and the standard section single piece is introduced from the back and then connected with the standard section U-shaped frame.

The beneficial effects of the present invention are: 1. The self-jacking structure of the jib crane is made of metal steel and connected by bolts or pins, which is convenient for installation, disassembly and transportation, and can be recycled repeatedly; 2. The whole lifting process is ground operation, no high-altitude operation, safe and reliable; 3. The method of the present invention is jacking inside the ground, and each time a standard joint is added, the jacking can be completed in one stroke, which greatly reduces the cost of the jacking process. 4. The jacking oil cylinder of the present invention is a single oil cylinder, and is internally jacked, and the jacking process is stable, which avoids the hidden danger caused by the asynchronous jacking of the double oil cylinders.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the embodiment of the present invention;

Fig. 2 is the structural representation of introducing dolly in the embodiment of the present invention;

Fig. 3 is the structural representation of introducing platform in the embodiment of the present invention;

Fig. 4 is a schematic structural view of the foundation chassis in an embodiment of the present invention;

Fig. 5 is a schematic structural diagram of a standard section in an embodiment of the present invention;

Fig. 6 is a schematic structural diagram of a standard section U-shaped frame in an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a standard section single chip in an embodiment of the present invention;

Fig. 8 is a structural schematic diagram of a jacking platform in an embodiment of the present invention;

Fig. 9 is a schematic structural view of a sleeve frame in an embodiment of the present invention;

In the figure: Ⅰ, imported trolley, Ⅱ, imported platform, Ⅲ, foundation chassis, Ⅳ, hydraulic jacking cylinder, V, jacking platform, VI, sleeve frame, VII, standard section, VIII, standard section U-shaped frame , IX, single piece of standard section, 1, introduction wheel, 2, main beam, 3, long oblique rod, 4, short oblique rod, 5, beam, 6, support plate, 7, column, 8, reinforcement plate, 9, Ladder shaft, 10, introduction track, 11, first transverse web bar, 12, first oblique web bar, 13, outer beam, 14, rib plate, 15, small ear plate, 16, large ear plate, 17, tie rod, 18, Adjusting rod device, 19, cross beam, 20, standard joint support, 21, sleeve frame support, 22, first oil cylinder seat, 23, inner track, 24, cable hole, 25, first main chord, 26, The second cross-web bar, 27, the second diagonal web bar, 28, the guide rail, 29, the gusset plate, 30, the step, 31, the connection sleeve, 32, the guide block, 33, the third transverse web bar, 34, the third diagonal web bar . Web bar, 44, guide plate, 45, climbing claw connecting ear, 46, the second main chord bar, 47, the fourth transverse web bar, 48, the fourth oblique web bar, 49, the second connecting plate, 50, guide wheel.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

As shown in Figure 1, a jib crane self-jacking device includes the introduction trolley I, the entry platform II, the foundation chassis III, the hydraulic jacking cylinder IV, the jacking platform V, the sleeve frame VI and the standard section VII . The foundation chassis III is fixedly connected with the external ground anchor, the standard section VII and the sleeve frame VI are connected with the foundation chassis III in turn, and the hydraulic jacking cylinder IV is placed inside VII of the standard section; the lower end of the hydraulic jacking cylinder IV is connected to the foundation chassis III Connection, the upper end is connected with the jacking platform V, one end of the introduction platform II is connected with the foundation chassis, and the other end is connected with the sleeve frame VI through a tie rod, the introduction trolley I is placed on the introduction platform II, and the standard section VII is placed on the introduction trolley I import.

As shown in Figure 2: the introduction trolley I includes a trolley frame and four introduction wheels 1. The trolley frame consists of two main beams 2, two long slanting bars 3, two short slanting bars 4, two beams 5, four support plates 6, four columns 7, ten rib plates 8 and four stepped shafts 9 is welded, and four lead-in wheels 1 and four stepped shafts 9 are sequentially connected and fixed on the trolley frame.

As shown in Figure 3, this figure shows the overall structure of the introduction platform II. The introduction platform II includes two introduction rails 10, two first transverse web bars 11, one first oblique web bar 12, an outer beam 13, two rib plates 14, two small ear plates 15, and four large ear plates 16. Two pull rods 17 and two adjusting rod devices 18. The first cross-web bar 11 and the first oblique web bar 12 are welded to the lower surface of the lead-in track 10, the outer beam 13 is welded to the outer end of the lead-in track 10, the ribs 14 are respectively connected to the lead-in track 10 and the outer beam 13, and the small ear plate 15 is welded to the At both ends of the outer beam 13, one end of the pull rod 17 is connected with the small ear plate 15, and the other end of the pull rod 17 is connected with the adjusting rod device 18.

As shown in Figure 4, this figure shows the overall structure of the foundation chassis III. Foundation chassis III mainly includes cross beam 19 , standard joint support 20 , sheath support 21 , first oil cylinder seat 22 and internal rail 23 . There are pull wire holes 24 at the four ends of the cross beam 19, the first oil cylinder seat 22 is located at the center of the cross beam, the standard joint support 20 and the sleeve support 21 are evenly distributed around the cross beam 19 with the first oil cylinder seat 22 as the center, and the inner track 23 are evenly distributed on both sides of the first oil cylinder block 22.

As shown in Figure 5, this figure shows the overall structure of the standard section VII, and the standard section VII includes the standard section U-shaped frame VIII and the standard section single chip IX.

As shown in Figure 6, the figure is a standard section U-shaped frame VIII structure. The U-shaped frame VIII of the standard section is composed of four first main chords 25 , nine second transverse webs 26 , six second diagonal webs 27 and two auxiliary guide rails 28 . Between the first main chord and the first main chord, three second cross-web members 26 and two second oblique web members 27 are sequentially connected through gusset plates 29 or steps 30 at the top, middle and bottom, and the two auxiliary rails 28 are symmetrically welded on Inside the U-shaped frame VIII of the standard section, four connecting sleeves 31 are respectively welded at both ends of the U-shaped frame VIII of the standard section, and six guide blocks 32 are arranged at the upper end.

As shown in Figure 7, this figure is a standard section single-chip IX structure. The single piece of the standard section is composed of three third transverse web bars 33, two third oblique web bars 34, one anti-torsion bar 35 and six first connecting plates 36, the connecting surface of the U-shaped frame VIII of the standard section and the single piece of the standard section IX has seven through holes drilled at the corresponding positions, and the U-shaped frame of the standard section is connected with the single piece of the standard section by bolts or pins.

As shown in Figure 8, this figure shows the overall structure of the jacking platform V. The jacking platform V includes a jacking frame, a second oil cylinder seat 37, four climbing claws 38 and thirty-two rollers 39. The jacking frame is made up of two long beams 40, two short beams 41, a middle beam 42, four fifth oblique web bars 43, four guide plates 44 and eight claw connection ears 45 for climbing. The long beams 40 and the short beams 41 are welded end to end in turn to form a frame, the cross beam 42 is welded in the middle of the frame, four oblique web bars 43 are evenly distributed inside the frame, and four guide plates 44 are symmetrically arranged on the long beam 40 in pairs. Block climbing claw connection ear 45 is welded in two groups around the frame, and the second oil cylinder seat 37 is positioned at the middle of the jacking frame, and climbing claw 38 is movably connected with climbing claw connection ear 45, and eight rollers 39 are installed on every guide plate.

As shown in Figure 9, this figure shows the overall structure of the sleeve VI. The frame VI includes four second main chords 46, (4N-4) fourth transverse webs 47, (8N-16) fourth diagonal webs 48, four second connecting plates 49 and four guide wheels 50 compositions. The lower ends of the front and rear sides of the frame VI are provided with standard joint introduction openings, four guide wheels 50 are welded on the inside of the upper end of the frame VI, and four connecting plates 49 are welded on the lower ends of the four main chords. Wherein (N≥4, N is selected as 5 in this embodiment).

A jacking method of a jib crane self-jacking device, the jacking method comprising the following steps:

1) The climbing claws of the jacking platform are in contact with the stepping surface of the standard section, and the hydraulic jacking cylinder is controlled by the speed regulating valve to expand and contract freely;

2) The hydraulic jacking cylinder is placed between the foundation chassis and the jacking platform, and the advance and retreat speed of the hydraulic oil on the working oil circuit of the oil cylinder is controlled by the forward speed regulating valve and the reverse speed regulating valve, so as to realize the lifting of the oil cylinder of jacking.

Further, when the jacking method introduces the standard section, the standard section is split into a standard section U-shaped frame and a standard section single piece,

Among them, the standard section U-shaped frame is placed on the introduction trolley and introduced from the front, and the standard section single piece is introduced from the back and then connected with the standard section U-shaped frame.

In addition, it should be noted that the specific embodiments described in this specification may be different in parts, shapes and names of parts, and the above content described in this specification is only an illustration of the structure of the present invention. All equivalent changes or simple changes made according to the structure, features and principles described in the patent concept of the present invention are included in the protection scope of the patent of the present invention. Those skilled in the art to which the present invention belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, as long as they do not deviate from the structure of the present invention or exceed the scope defined in the claims. All should belong to the protection scope of the present invention.

Claims (10)

1. arm crane is from a jacking apparatus, it is characterized in that: comprise and introduce dolly, introduction platform, basic underframe, hydraulic lifting oil cylinder, jacking cushion cap, standard knot and stock;

Described basic underframe is connected with extraneous earth anchorage, and described standard knot and stock are connected with described basic underframe successively;

Hydraulic lifting oil cylinder is installed in described standard knot;

Described hydraulic lifting oil cylinder lower end is connected with described basic underframe, and described hydraulic lifting cylinder upper end is connected with jacking cushion cap;

Described introduction platform one end is connected with basic underframe, and the described introduction platform other end is connected with described stock;

Described introduction dolly is positioned on described introduction platform, and described standard knot is positioned on described introduction dolly and introduces.

2. a kind of arm crane according to claim 1 is from jacking apparatus, it is characterized in that: described basic underframe comprises rood beam, standard knot bearing, stock bearing, the first oil cylinder seat and inner tracks;

Described rood beam four end has bracing wire hole, and described first oil cylinder seat is positioned at described rood beam center;

Described standard knot bearing and stock bearing are evenly arranged in described rood beam surrounding centered by the first oil cylinder seat, and described inner tracks is all arranged in described first oil cylinder seat both sides.

3. a kind of arm crane according to claim 1 is from jacking apparatus, it is characterized in that: described standard knot comprises the U-shaped frame of standard knot and standard knot monolithic;

Be provided with two secondary tracks in the U-shaped frame of described standard knot, the U-shaped frame of described standard knot is provided with adapter sleeve and orienting lug;

Described standard knot monolithic is made up of three the 3rd horizontal web members, two the 3rd diagonal web members, an anti-torsion bar and six the first connecting panels;

The position that the joint face of the U-shaped frame of described standard knot is corresponding with described standard knot monolithic is drilled with seven through holes, and the U-shaped frame of described standard knot and described standard knot monolithic are by bolt or pinned connection.

4. a kind of arm crane according to claim 1 is from jacking apparatus, it is characterized in that: described stock comprises the second main chord, the 4th horizontal web member, the 4th diagonal web member, four the second connecting panels and four track adjusting wheels;

The lower end of described stock two sides is all provided with standard knot and introduces opening, and four described track adjusting wheels are fixedly connected on inside described stock, and four described connecting panels are fixedly connected on described second main chord lower end.

5. a kind of arm crane according to claim 1 is from jacking apparatus, it is characterized in that: described jacking cushion cap comprises jacking frame, the second oil cylinder seat, climbs pawl and roller;

Described jacking frame is climbed pawl engaging lug formed by two Chang Liang, two short beams, a center member, four the 5th diagonal web members, four pieces of guide plates and eight piece;

Described long beam and short beam head and the tail are in turn connected to form frame, and described crossbeam is fixed on the centre of frame, and four even cloth of described 5th diagonal web member are in frame, and four pieces of described guide plates between two symmetry are distributed in Chang Liangshang;

Climb pawl engaging lug one group and be fixedly installed in described frame surrounding between two described in eight pieces, described second cylinder pedestal is positioned in the middle of described jacking frame, climbs pawl engaging lug and is connected with and climbs pawl, and guide plate described in every block is provided with eight described rollers.

6. a kind of arm crane according to claim 1 is from jacking apparatus, it is characterized in that: described introduction platform comprises two introduction tracks, two first horizontal web members, second diagonal web member, an outer crossbeam, two pieces of gussets, two pieces of otic placodes, two pull bars and two adjust bar devices;

Described first horizontal web member and the first diagonal web member are welded in described introduction track lower surface; Described outer crossbeam is welded in introduces track outer end, and described gusset is connected with introduction track and outer crossbeam respectively, and described otic placode is welded in outer crossbeam two ends;

One end of described pull bar is connected with otic placode, and the other end of pull bar is connected with adjust bar device.

7. a kind of arm crane according to claim 6 is from jacking apparatus, it is characterized in that: described adjust bar device comprises two pieces and connects otic placode, screw rod, a nut and one piece of connecting panel;

Described connecting panel is drilled with through hole, and described screw rod one end is connected with nut through this through hole, and the screw rod other end is welded in two pieces and connects in the middle of otic placode.

8. a kind of arm crane according to claim 1 is from jacking apparatus, it is characterized in that: described introduction dolly comprises trolley frame and four introduction wheels;

Four described introduction wheels are fixed on trolley frame;

Described trolley frame is welded by two girders, two long diagonal braces, two short braces, two crossbeams, four pieces of stay bearing plates, four columns, ten pieces of gussets and four stepped shaft.

9. arm crane is from a jacking method for jacking apparatus, it is characterized in that, this jacking method comprises the steps:

1) pawl of climbing of jacking cushion cap contacts with standard knot step surface, by governor valve hydraulic control jacking cylinder free-extension;

2) described hydraulic lifting oil cylinder is positioned between basic underframe and described jacking cushion cap, is controlled the advance and retreat speed of the hydraulic oil on cylinder efficient oil circuit, thus realize the jacking of oil cylinder by forward governor valve and reverse governor valve.

10. a kind of arm crane according to claim 9 is from the jacking method of jacking apparatus, it is characterized in that: described jacking method is when introducing standard knot, and standard knot is split as the U-shaped frame of standard knot and standard knot monolithic,

Wherein, the U-shaped frame of standard knot is positioned over to be introduced on dolly and introduces from front, and standard knot monolithic is introduced frame U-shaped with standard knot again and is connected from the back side.