CN112125178A

CN112125178A - Jacking step-changing device of internal climbing tower crane

Info

Publication number: CN112125178A
Application number: CN202010808038.7A
Authority: CN
Inventors: 高宁
Original assignee: Shandong Faenke Machinery Equipment Co ltd
Current assignee: Shandong Faenke Machinery Equipment Co ltd
Priority date: 2020-08-12
Filing date: 2020-08-12
Publication date: 2020-12-25

Abstract

The invention relates to the technical field of tower cranes, and discloses a jacking step-changing device of an internal climbing tower crane, which comprises a climbing box, wherein the climbing box is internally and slidably connected with a first rack, the inner wall of the climbing box is provided with a supporting mechanism, the top of the first rack is connected with a top frame through bolts, a fixing mechanism is arranged inside the top frame, and a jacking mechanism is arranged between the first rack and the top frame. The jacking step-changing device of the internal climbing tower crane provided by the invention has the advantages that the jacking mechanism and the supporting mechanism work in a matched manner, so that a crane body can be climbed and lifted, the clamping jaws on the jacking mechanism are welded and fixed with the crane body and cannot rotate, the bearing capacity of a joint is greatly increased, the safety factor is greatly increased, and a third supporting plate and a fourth supporting plate are clamped between every two frames, so that the jacking mechanism can be helped to share the gravity, the jacking mechanism is prevented from being broken due to the overweight of the crane, and further, safety accidents are caused.

Description

Jacking step-changing device of internal climbing tower crane

Technical Field

The invention relates to the technical field of cranes, in particular to a jacking step-changing device of an internal climbing tower crane.

Background

The crane is a hoisting device which is transversely erected above workshops, warehouses and material yards for hoisting materials, because the two ends of the crane are located on high cement columns or metal supports and are shaped like a bridge, the bridge of the bridge crane longitudinally runs along tracks laid on the elevated frames at the two sides, the space below the bridge can be fully utilized for hoisting the materials, the crane is not hindered by ground equipment, and the crane is a hoisting machine with the widest application range and the largest quantity.

When the current internal climbing tower crane ascends, only the jacking device supports the whole crane, the jacking device is possibly stressed too much and breaks, the claw on the jacking device can rotate, the force which can be borne by the joint can be possibly small, and further the breaking can also happen when the crane operates, so that a great safety accident occurs, and the jacking step-changing device of the internal climbing tower crane is provided to solve the problem.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a jacking step-changing device of an internal climbing tower crane, which solves the problems that the bearing force of the joint of a clamping jaw on the jacking device, which needs to rotate, is small, and most of the stress is borne by the jacking device.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: including the climbing case, the inside sliding connection of climbing case has a frame, the inner wall of climbing case is provided with supporting mechanism, there is the roof-rack at the top of frame through bolted connection, the inside of roof-rack is provided with fixed establishment, be provided with climbing mechanism between frame and the roof-rack.

Preferably, there is No. two frames bottom of a frame through bolted connection, the joint has No. three backup pads between a frame and No. two frames, No. three fixture blocks have all been welded to the both sides of No. three backup pads, No. four backup pads have been connected to the bottom joint of No. two frames, No. four fixture blocks have all been welded to the both sides of No. four backup pads, the inner wall welding of a frame has the baffle.

Preferably, the number of the second machine frame is provided with a plurality of, and the central line that the No. two machine frames of a plurality of all used climbing case is the linear array distribution of symmetry axis.

Preferably, the supporting mechanism comprises a supporting block, the inner wall of the supporting block is rotatably connected with a fixed rod, a lower stop block is welded at the rear part of the fixed rod, a clamping groove is formed in the inner wall of the supporting block, the inner wall of the supporting block is connected with two inner rings in a sliding mode, an upper stop block is welded at the front part of each inner ring, a return spring is welded between the two inner rings, and a clamping strip is welded on the surface of each inner ring.

Preferably, the surface of the supporting block is rotatably connected with the inner wall of the climbing box, the surface of the fixing rod is fixedly connected with the inner wall of the climbing box in an inserting mode, the surface of the clamping strip is slidably connected with the inner wall of the clamping groove, and the surface of the lower stop block is in contact with the surface of the upper stop block.

Preferably, the fixing mechanism comprises a pull rod, an extension spring is sleeved on the surface of the pull rod, a chuck is welded at the bottom end of the pull rod, and a clamping rod is welded at the bottom of the chuck.

Preferably, the surfaces of the pull rod, the chuck and the clamping rod are connected with the inner wall of the top frame in a sliding mode, and the two ends of the telescopic spring are fixedly welded to the top wall inside the top frame and the top of the chuck respectively.

Preferably, climbing mechanism is including a backup pad, a fixture block has all been welded to the both sides of a backup pad, there is the hydro-cylinder bottom of a backup pad through bolted connection, there is No. two backup pads lower surface of hydro-cylinder through bolted connection, No. two fixture blocks have all been welded to the both sides of No. two backup pads, the locating hole has been seted up at the top of a backup pad.

Preferably, the surface of the first supporting plate is connected between the top frame and the first machine frame in a sliding mode, the surface of the second supporting plate is connected with the inner wall of the baffle in a sliding mode, the lower surfaces of the first clamping block and the second clamping block are in contact with the upper surface of the supporting block, and the inner wall of the positioning hole is connected with the surface of the clamping rod in a sliding mode.

(III) advantageous effects

Compared with the prior art, the invention provides a jacking step-changing device of an internal climbing tower crane, which has the following beneficial effects:

1. this jacking device of stepping changing of inside climbing tower crane through climbing mechanism and supporting mechanism cooperation work to can realize that the hoist body scrambles and rises, and jack catch and body welded fastening on the climbing mechanism, can't rotate, and then greatly increased the holding capacity of junction, make factor of safety greatly increased.

2. This jacking device of stepping on of interior tower crane, junction between per two No. two frames all the joint have No. three backup pads and No. four backup pads to can help climbing mechanism to share gravity, prevent that the hoist from overweight makes climbing mechanism fracture, and then the incident takes place.

3. This jacking step-changing device of interior tower crane that climbs, No. three backup pads and No. four backup pads are crossed the cross and are placed to can increase the hoist and guarantee its stability when rising, if all on one side, probably take place the slope, and then take place to empty the phenomenon.

4. This jacking device of stepping that climbs tower crane in can carry out spacing fixed with each backup pad through fixed establishment to can prevent that it from climbing the in-process, each backup pad takes place the displacement, leads to each fixture block unable and supporting shoe contact, and then makes the hoist have the strong point at the climbing in-process, causes the hoist landing.

5. This jacking step-changing device of interior tower crane that climbs can carry on spacingly to No. two supporting plate machines through the baffle to can restrict No. two supporting plates and drive No. two blocks and can only remove on a vertically route, prevent the skew of No. two supporting plates, and then can't continue to scramble.

Drawings

FIG. 1 is a schematic structural view of a jacking step-changing device of an internal climbing tower crane according to the present invention;

FIG. 2 is a half sectional view of a jacking step-changing device of an internal climbing tower crane according to the present invention;

FIG. 3 is a schematic view of the internal structure of a jacking step-changing device of an internal climbing tower crane according to the present invention;

FIG. 4 is a schematic view of a second frame of a jacking step-changing device of an internal climbing tower crane according to the present invention;

FIG. 5 is a partial enlarged cross-sectional view of a climbing box of a jacking step-changing device of an internal-climbing tower crane, which is provided by the invention;

FIG. 6 is a partially enlarged cross-sectional view of a supporting mechanism of a jacking step-changing device of an inside climbing tower crane according to the present invention;

FIG. 7 is a right side sectional view of a fixing mechanism of a jacking step-changing device of an inside climbing tower crane according to the present invention;

fig. 8 is a schematic diagram of a jacking mechanism of a jacking step-changing device of an internal climbing tower crane according to the invention.

In the figure: 1. climbing a box; 2. a first frame; 3. a support mechanism; 31. a support block; 32. fixing the rod; 33. a lower stop block; 34. an inner ring; 35. an upper stop block; 36. a return spring; 37. clamping the strip; 38. a card slot; 4. a top frame; 5. a fixing mechanism; 51. a pull rod; 52. a tension spring; 53. a chuck; 54. a clamping rod; 6. a jacking mechanism; 61. a first support plate; 62. a first clamping block; 63. an oil cylinder; 64. a second support plate; 65. a second clamping block; 66. positioning holes; 7. a third clamping block; 71. a third support plate; 8. a second frame; 9. a fourth clamping block; 91. a support plate No. four; 10. and a baffle plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

The utility model provides a jacking device that steps that climbs tower crane in, as shown in fig. 1-6, including climbing case 1, climbing case 1's inside sliding connection has frame 2 No. one, and climbing case 1's inner wall is provided with supporting mechanism 3, and bolted connection has roof-rack 4 at frame 2's top, and the inside of roof-rack 4 is provided with fixed establishment 5, is provided with climbing mechanism 6 between frame 2 and the roof-rack 4.

In this embodiment, there is No. two frames 8 bottom of frame 2 through bolted connection, the joint has No. three backup pads 71 between frame 2 and No. two frames 8, No. three fixture block 7 has all been welded to the both sides of No. three backup pads 71, No. two frame 8's bottom joint has No. four backup pads 91, No. four fixture block 9 has all been welded to the both sides of No. four backup pads 91, the inner wall welding of frame 2 has baffle 10, No. three backup pads 71 and No. four backup pads 91 carry out the cross and place, thereby can increase the hoist when rising, guarantee its stability, if all on one side, the slope can take place, take place to empty the phenomenon, and then take place the incident.

In addition, the quantity of No. two frames 8 is provided with a plurality of, and No. two frames 8 of a plurality of all use the central line of climbing case 1 to be the array distribution of symmetry axis nature, the whole height of hoist can come to come from the row through No. two frames 8 as required and adjust, can increase or reduce the biggest climbing distance of hoist, practicality greatly increased, when No. two frames 8 increase in quantity, No. three backup pad 71 and No. four backup pad 91's quantity also relative increase for increase the overall stability of hoist.

Besides, supporting mechanism 3 is including supporting shoe 31, the inner wall of supporting shoe 31 rotates and is connected with dead lever 32, the rear portion welding of dead lever 32 has lower dog 33, draw-in groove 38 has been seted up to the inner wall of supporting shoe 31, the inner wall sliding connection of supporting shoe 31 has two inner circles 34, the anterior welding of inner circle 34 has last dog 35, the welding has reset spring 36 between two inner circles 34, the skin weld of inner circle 34 has card strip 37, can restrict inner circle 34 and slide at the inner wall of supporting shoe 31 through draw-in groove 38 and card strip 37 and not rotatory, thereby when can realizing supporting shoe 31 clockwise turning, drive inner circle 34 through draw-in groove 38 and card strip 37 and rotate, and then make each fixture block can follow the top and drive supporting shoe 31 rotatory, and can not follow the top down and drive supporting.

Further, the surface of supporting shoe 31 rotates with the inner wall of climbing case 1 to be connected, the surface of dead lever 32 is pegged graft fixedly with the inner wall of climbing case 1, the surface of card strip 37 and the inner wall sliding connection of draw-in groove 38, the surface of bottom dog 33 and the surface of last dog 35 contact each other, the contact surface of going up dog 35 and bottom dog 33 is the inclined plane, the another side is the plane, can make last dog 35 and bottom dog 33 carry out clockwise rotation and can not carry out anticlockwise rotation, and then carry out the auto-lock to inner circle 34 and whole supporting shoe 31, when preventing that each backup pad from pushing down, supporting shoe 31 is rotatory, make each backup pad drop, the security greatly increased.

Furthermore, fixing mechanism 5 is including pull rod 51, expanding spring 52 has been cup jointed on pull rod 51's surface, pull rod 51's bottom welding has chuck 53, chuck 53's bottom welding has kelly 54, kelly 54 through among the fixing mechanism 5 can carry out spacing fixed with each backup pad, thereby can prevent that the hoist from climbing the in-process, each backup pad from taking place the displacement, lead to each fixture block unable and supporting shoe 31 contact, and then make the hoist have no strong point at the climbing in-process, cause the hoist landing.

Example 2

As shown in fig. 5-8, the surfaces of the pull rod 51, the chuck 53 and the clamping rod 54 are all connected with the inner wall of the top frame 4 in a sliding manner, the two ends of the extension spring 52 are respectively welded and fixed with the top wall inside the top frame 4 and the top of the chuck 53, the chuck 53 can prevent the whole fixing mechanism 5 from being pulled out due to excessive force when the pull rod 51 is pulled, and the chuck 53 can play a role in limiting the pull rod 51 and the clamping rod 54.

It is worth noting that climbing mechanism 6 is including a backup pad 61, fixture block 62 has all been welded to the both sides of a backup pad 61, there is an hydro-cylinder 63 bottom of a backup pad 61 through bolted connection, there is No. two backup pads 64 on the lower surface of hydro-cylinder 63 through bolted connection, No. two fixture blocks 65 have all been welded to the both sides of No. two backup pads 64, locating hole 66 has been seted up at the top of a backup pad 61, fixture block 62 and No. two fixture blocks 65 respectively with a backup pad 61 and No. two backup pads 64 welded fastening, thereby can realize that the hoist body climbs and rises, and welded fastening between each fixture block on climbing mechanism 6 and each backup pad, can't rotate, and then greatly increased the bearing capacity of junction, make factor of safety greatly increased.

It is worth to be noted that the surface of the first support plate 61 is slidably connected between the top frame 4 and the first frame 2, the surface of the second support plate 64 is slidably connected with the inner wall of the baffle plate 10, the lower surfaces of the first fixture block 62 and the second fixture block 65 are both in contact with the upper surface of the support block 31, the inner wall of the positioning hole 66 is slidably connected with the surface of the clamping rod 54, and the baffle plate 10 can limit the second support plate 64, so that the second support plate 64 can be limited from driving the second fixture block 65 to move only on a vertical path, and the second support plate 64 is prevented from being deviated, thereby preventing the jacking mechanism 6 from being incapable of climbing and lifting continuously.

When the jacking step-changing device of the internal climbing tower crane is used, when the crane needs to be lifted, the first support plate 61 is inserted between the top frame 4 and the first rack 2, the pull rod 51 is pulled to enable the pull rod 51 to drive the clamping rod 54 to move upwards through the chuck 53, at the moment, the first support plate 61 moves to the position, the pull rod 51 is loosened to enable the clamping rod 54 to be clamped into the positioning hole 66 on the first support plate 61, so that the situation that each support plate is displaced in the climbing process to cause each clamping block to be incapable of contacting with the support block 31, further the crane has no supporting point in the climbing process to cause the crane to slide down, the third support plate 71 and the fourth support plate 91 are arranged between every two second racks 8 in a crossed manner according to the above-mentioned steps, therefore, the lifting time of the crane can be increased, the stability of the crane can be ensured, if the third support plate and the fourth support plate, when the crane is lifted, the oil cylinder 63 pushes the second support plate 64 to move, so that the first support plate 61 pushes the whole crane to move upwards, in the process of moving upwards, each fixture block pushes the support block 31 to rotate clockwise, the support block 31 is pushed to drive the inner ring 34 to rotate, the inner ring 34 can drive the support block 31 to rotate clockwise but not anticlockwise due to the contact of the inclined surfaces of the lower stop block 33 and the upper stop block 35, each fixture block can move upwards through the support block 31, after the oil cylinder 63 pushes a stroke, each fixture block on the first support plate 61, the third support plate 71 and the fourth support plate 91 can be pressed on the support block 31, the return spring 36 supports the inner rings 34 at two ends, so that the planes of the lower stop block 33 and the upper stop block 35 are in contact with each other, cause inner circle 34 can't carry out anticlockwise rotation, and then make supporting shoe 31 can't rotate, thereby support each backup pad, each fixture block and body welded fastening on the climbing mechanism 6, can't rotate, and then greatly increased the bearing capacity of junction, make factor of safety greatly increased, hydro-cylinder 63 withdraws, drive No. two backup pad 64 rebound to last supporting shoe 31, stretch out hydro-cylinder 63 again, repeat above-mentioned function, thereby can drive whole hoist and scramble and rise.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Claims

1. The utility model provides a jacking device that steps that rises of interior tower crane, includes climbing case (1), its characterized in that: the inside sliding connection of climbing case (1) has frame (2) No. one, the inner wall of climbing case (1) is provided with supporting mechanism (3), there is roof-rack (4) at the top of frame (2) through bolted connection, the inside of roof-rack (4) is provided with fixed establishment (5), be provided with climbing mechanism (6) between frame (2) and roof-rack (4).

2. The jacking step-changing device of the internal climbing tower crane according to claim 1, characterized in that: the bottom of a frame (2) has No. two frames (8) through bolted connection, the joint has No. three backup pads (71) between frame (2) and No. two frames (8), No. three fixture block (7) have all been welded to the both sides of No. three backup pad (71), the bottom joint of No. two frames (8) has No. four backup pads (91), No. four fixture block (9) have all been welded to the both sides of No. four backup pads (91), the inner wall welding of a frame (2) has baffle (10).

3. The jacking step-changing device of the internal climbing tower crane according to claim 2, characterized in that: the number of the second machine frame (8) is provided with a plurality of machine frames, and the central lines of the climbing boxes (1) are used as symmetrical axis linear array distribution for the second machine frames (8).

4. The jacking step-changing device of the internal climbing tower crane according to claim 1, characterized in that: the supporting mechanism (3) comprises a supporting block (31), the inner wall of the supporting block (31) is rotatably connected with a fixing rod (32), a lower stop block (33) is welded at the rear part of the fixing rod (32), a clamping groove (38) is formed in the inner wall of the supporting block (31), two inner rings (34) are slidably connected to the inner wall of the supporting block (31), an upper stop block (35) is welded at the front part of each inner ring (34), a reset spring (36) is welded between the inner rings (34), and a clamping strip (37) is welded on the surface of each inner ring (34).

5. The jacking step-changing device of the internal climbing tower crane according to claim 4, characterized in that: the surface of supporting shoe (31) rotates with the inner wall of climbing case (1) to be connected, the surface of dead lever (32) is pegged graft fixedly with the inner wall of climbing case (1), the surface of card strip (37) and the inner wall sliding connection of draw-in groove (38), the surface of lower dog (33) and the surface of last dog (35) contact each other.

6. The jacking step-changing device of the internal climbing tower crane according to claim 1, characterized in that: fixed establishment (5) including pull rod (51), expanding spring (52) have been cup jointed on the surface of pull rod (51), the bottom welding of pull rod (51) has chuck (53), the bottom welding of chuck (53) has kelly (54).

7. The jacking step-changing device of the internal climbing tower crane according to claim 6, characterized in that: the surface of pull rod (51), chuck (53) and kelly (54) all with the inner wall sliding connection of roof-rack (4), the both ends of expanding spring (52) respectively with the roof of roof inside roof and the top welded fastening of chuck (53) of roof-rack (4).

8. The jacking step-changing device of the internal climbing tower crane according to claim 1, characterized in that: climbing mechanism (6) are including backup pad (61) No. one, fixture block (62) have all been welded to the both sides of backup pad (61), there is hydro-cylinder (63) bottom of backup pad (61) through bolted connection, there is No. two backup pad (64) lower surface of hydro-cylinder (63) through bolted connection, fixture block (65) No. two have all been welded to the both sides of No. two backup pad (64), locating hole (66) have been seted up at the top of backup pad (61).

9. The jacking step-changing device of the internal climbing tower crane according to claim 8, characterized in that: the surface of the first supporting plate (61) is connected between the top frame (4) and the first rack (2) in a sliding mode, the surface of the second supporting plate (64) is connected with the inner wall of the baffle (10) in a sliding mode, the lower surfaces of the first clamping block (62) and the second clamping block (65) are in contact with the upper surface of the supporting block (31), and the inner wall of the positioning hole (66) is connected with the surface of the clamping rod (54) in a sliding mode.