KR20100103252A - Self-propelled type carrier - Google Patents

Abstract

PURPOSE: A self-propelled carrier is provided to prevent the trolley assembly from being overturned in the transverse direction of the girders and to control the steering angle of steering wheels by adjusting the stroke of a steering cylinder without an additional sensor. CONSTITUTION: A self-propelled carrier comprises a carrier frame, a trolley assembly(30), a trolley separation protection part, a winch assembly, a wheel steering part, and a driving part. The carrier frame includes a pair of girders(11), legs(15), saddles(16) reinforcing the legs, drive wheels(21), and steering wheels(22). The trolley assembly comprises a trolley frame(31) and a lifting sieve assembly(65) for lifting and transporting heavy materials. The trolley separation protection part guides the reciprocation of the trolley assembly along the girders in order to prevent the trolley assembly from being overturned in the transverse direction of the girders. The winch assembly comprises a pair of winch drums(61) and a wire(72) connected via the trolley assembly and the lifting sieve assembly. The wheel steering part is connected to the steering wheels and regulates the steering angle of the steering wheels in multiple stages. The driving part drives the drive wheels and the steering wheels of the carrier frame, trolley wheels(38) of the trolley assembly, and the winch drums of the winch assembly.

Description

Self-propelled type carrier

The present invention relates to a self-propelled carrier, and more particularly to a self-propelled carrier for transporting large, heavy objects, such as PC slabs for civil engineering.

The carrier for carrying a heavy, large lifting object is composed of a frame that forms a whole frame and is provided with a plurality of parts, a wheel installed at the bottom of the frame, and a hoist installed on the frame to lift a heavy object.

In such a carrier, a hydraulic cylinder is provided for adjusting the traveling direction of the carrier. The cylinder rod of this hydraulic cylinder is connected to the wheel to rotate the wheel in the horizontal direction. The cylinder rod of such a hydraulic cylinder does not adjust the stroke by itself. Therefore, a separate sensor is installed to control the rotation angle of the wheel by adjusting the stroke of the cylinder rod, and the stroke of the cylinder rod is controlled by controlling the hydraulic pressure supplied to the hydraulic cylinder through the sensor.

However, the sensor is expensive, requires a separate connection circuit, the structure is very fragile and easily damaged by external shocks. Therefore, when the sensor is installed to control the stroke of the cylinder rod, the manufacturing cost of the carrier is greatly increased, and there is a problem that a lot of time and effort are required for maintenance and repair of the carrier.

Meanwhile, in the conventional carrier, hook assemblies are respectively installed in a pair of girders, and the hook assembly is provided with two rows of first sieve blocks and second sieve blocks. The first sieve block and the second sieve block are connected to one hook to lift a heavy object suspended from the hook.

However, the first sheave of the first sieve block and the second sheave of the second sheave block have two rows of wires respectively, and two winding drums are provided to respectively wind the two rows of wires.

Therefore, the conventional carrier should be provided with two rows of wires and two winding drums for winding two rows of wires to simultaneously lift two rows of the first sheave block and the second sheave block. Therefore, in the conventional carrier, the number of parts is increased by that amount, and the assembly labor and manufacturing cost are increased by that.

In addition, the conventional carrier is very difficult to assemble the wheel. To assemble the wheel, temporarily place the wheel inside the wheel frame, match the hole of the wheel with the hole of the wheel frame, and then insert the wheel shaft into it. When the wheel shaft is inserted into the wheel frame and the wheel, the bearing and the bearing housing are coupled to both ends of the wheel shaft, and then the bearing housing is fixed to the wheel frame.

Therefore, a lot of processes are required to assemble the wheels to the wheel frame, and accordingly, the number of assembly operations is greatly increased, and a lot of time is required for maintenance and repair.

An object of the present invention for solving the above problems, one drum drive motor, one winch drum, one line of wire, self-propelled carrier to be able to elevate the first sieve block and the second sieve block forming two rows To provide.

Another object of the present invention is to provide a self propellered carrier which prevents the trolley assembly from tipping over in the transverse direction of the girder.

Still another object of the present invention is to provide a self-propelled carrier capable of adjusting a steering angle of a steering wheel by adjusting a stroke of a steering cylinder without a separate sensor.

It is still another object of the present invention to provide a self propellered carrier which can be easily assembled to a wheel frame and a steering wheel.

The self-propelled carrier of the present invention for achieving the above object is a pair of girders are installed parallel to the top, the legs are installed on both ends of the girders in the downward direction, and the saddle connected to the two adjacent legs to reinforce them And a carrier frame composed of driving wheels and steering wheels installed at lower ends of the legs; Trolley frame with trolley wheels installed on the upper part of the pair of girders so as to traverse along it, and a lifting sieve assembly that is connected to the lower part of the trolley frame and moves along the girder together with the trolley frame and lifts and carries a large, heavy object Trolley assembly; A pair of winch drums respectively installed on the two legs to correspond to two adjacent ends of the girder, and a connection between the trolley assembly and the lifting sheave assembly to be wound around the winch drums and to lift the lifting sheave assembly when the winch drum is driven. A winch assembly having a wire to be provided; A wheel steering unit installed at the saddle of the carrier frame and connected to a steering wheel to which a steering cylinder is installed to adjust a steering angle of the steering wheel; And a drive unit installed in the carrier frame and connected to the drive wheel of the carrier frame, the steering wheel, the trolley wheel of the trolley assembly, and the winch drum of the winch assembly to drive them.

Another characteristic of the self propellered carrier of the present invention is that the winch drum is provided with a first winding part and a second winding part on both sides of the circumference thereof; One end of the wire is wound around the first winding portion, the first guide sheave of the carrier frame, the first water guide upper sheave of the trolley assembly, the first water guide sheaves of the first evaluation sheave, the first lifting sheaves of the lifting sheave assembly and the trolley After passing through the first vertical guide upper sheave of the assembly, the second vertical guide upper sheave of the trolley assembly, the second evaluation guide lower sheave, the second evaluation guide upper sheave, the second lifting sieve of the lifting sheave assembly, the carrier frame Via the second guide sheave of the other end is wound around the second winding of the winch drum so that the entire form of the wire forms a closed loop; With one winch drum and one line of wire, the first sieve block and the second sieve block of the elevating sieve assembly forming two rows are balanced.

Another feature of the self propellered carrier of the present invention is that trolley assemblies and girders are provided with a trolley departure prevention portion to guide the trolley assemblies to be reciprocated along the girders and to prevent the trolley assembly from overturning in the lateral direction of the girder.

Another feature of the self-propelled carrier of the present invention, the trolley departure prevention portion, the lower guides are installed on both sides of the bottom surface of the top of the girders long along the length direction, the fixing brackets fixed to the lower sides of the girders, fixing brackets Supporting shafts installed in the horizontal direction, guide rollers coupled to the supporting shafts and engaged with the lower guides to reciprocate along the lower guide, and horizontally coupled to the fixing brackets, and one end of the upper plate of the girder It is located at the bottom and consists of safety pins that prevent the trolley assembly from tipping over in the transverse direction of the girders.

Another feature of the self-propelled carrier of the present invention, the wheel steering portion, one end is coupled to the first fixed hinge pin to the saddle of the carrier frame to be rotated around the first fixed hinge pin and the other end is connected to the steering wheel steering A steering cylinder for adjusting the steering angle of the wheel, one end of which is coupled to the saddle of the carrier frame by a second fixed hinge pin, the other end of which is connected to the steering cylinder by a first movable hinge pin, and the second fixed hinge pin when the steering cylinder is operated. A first link pivoted around the first link, one end of which is coupled to the steering wheel by a second movable hinge pin, the other end of which is coupled to the first movable hinge pin, and both ends of the first movable hinge pin and the second movable hinge pin are operated when the steering cylinder is operated. The second link is rotated about the movable hinge pin to adjust the steering angle of the steering wheel.

Another feature of the self-propelled carrier of the present invention is that the steering cylinder, the first cylinder rod is installed on one side and connected to the first fixed hinge pin, and the other side is connected to the first movable hinge pin and is different from the first cylinder rod It is a bidirectional cylinder composed of a second cylinder rod having a stroke.

According to the present invention as described above, one end of the wire is wound around the first winding portion, the first guide sheave, the first water evaluation guide upper sheave, the first water evaluation guide lower sheaves, the first lifting sieves, the first vertical After passing through the upper guide sheave, the second vertical guide upper sheave, the second hydrostatic guide lower sheave, the second hydrostatic guide upper sheave, the second elevating sheave and the second guide sheave, and the other end of the winch drum It is wound up in two winding parts, and the whole form of a wire forms a closed loop form. Therefore, the first sieve block and the second sieve block forming two rows can be lifted in a balanced manner with a single winch drum and a single wire, thereby reducing the number of parts, thereby reducing the assembly labor and manufacturing cost.

The trolley assemblies and girders of the present invention are provided with a trolley departure prevention portion to guide the trolley assemblies to be reciprocated along the girders and to prevent the trolley assembly from overturning in the transverse direction of the girder. Therefore, when the trolley assembly is transported along the upper guide of the girder, the guide roller is transported along the lower guide and guides the trolley assembly to be stably transported. Supported on both sides of the bottom of the top plate to prevent overturning. The trolley assembly therefore runs stably on the girder.

In addition, the steering wheel of the present invention is provided with a steering cylinder having a first cylinder rod and a second cylinder rod having different strokes, and the steering cylinder and the steering wheel to rotate the steering wheel during operation of the steering cylinder. The link and the second link are connected. Therefore, when the second cylinder rod of the steering cylinder is advanced, the steering wheel is rotated by a predetermined angle about the central axis, and when the first cylinder is advanced, the steering wheel is further rotated by the constant angle. Therefore, the present invention can adjust the rotation angle of the steering wheel by combining the steering cylinder, the first link, the second link and a plurality of hinge pins without a separate sensor.

And, the self-propelled carrier of the present invention is very easy to assemble the driving wheels and steering wheels. Assemble the wheel axle with driving wheel or steering wheel in the center and bearing assembly at both ends to the lower part of the slide groove of the wheel frame and push it upwards of the slide groove. do. Therefore, the assembly process is greatly reduced because the process of fixing the driving wheel and the steering wheel to the wheel frame is simplified.

Specific features and advantages of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings.

1 is a perspective view of a self-propelled carrier of the present invention, Figures 2 to 4 are a front view, a side view, a plan view of Figure 1, Figures 5 to 7 are a front view, a side view, a plan view of the trolley assembly. Figure 8 is a schematic view of the winch assembly, Figures 9a to 9b is a schematic plan view showing a wheel steering portion, Figures 10a and 10b is a front view and a side view showing a wheel frame. 11A to 11C are schematic front views illustrating a state in which a driving wheel or a steering wheel is assembled to a wheel frame, and FIG. 12 is a circuit diagram illustrating a driving unit.

The self-propelled carrier of the present invention, the carrier frame 10, the trolley assembly 30, the trolley departure prevention unit 50, the winch assembly 60, the wheel steering unit 80, the drive unit 110.

The carrier frame 10 is provided with a pair of girders 11 installed to be parallel to the upper portion. An upper guide 13 is installed in the upper plates 12 of the girder 11 along its longitudinal direction, and the trolley wheel 38 to be described later is mounted on the upper guide 13 to be driven along the same. Horizontal beams 14 are provided between the girders 11 to support them. Legs 15 are installed at both ends of the girder 11 in the lower direction thereof. Saddles 16 are connected to two adjacent legs 15 to reinforce them. The saddle 16 is provided with a mounting table 17 so that the driving unit 110, such as a generator 111, an electric motor 112, a hydraulic pump 113 to be described later is installed. Wheels are provided at the bottom of the leg 15, and these wheels are composed of a pair of driving wheels 21 and a pair of steering wheels 22.

The wheel drive motor 19 is connected to the pair of drive wheels 21. The wheel drive motor 19 is a hydraulic motor and is connected to the hydraulic pump 113 of the driving unit 110 to be described later, and receives hydraulic pressure for driving the driving wheel 21 therefrom.

The cabin 20 is installed at one side of the carrier frame 10. The cabin 20 is provided with a self propellered carrier drive controller. When moving the whole carrier, the boarding 20 is used to control the transport of the carrier by operating the controller.

The trolley assembly 30 is moved along the girder 11 and carries a large, heavy object by lifting. The trolley assembly 30 is provided with a trolley frame 31 to be seated on a pair of girders 11 and traversed along it. This trolley frame 31 is provided with trolley wheels 38 so as to be seated on the upper guide 13 of the girder 11.

The upper one side of the trolley frame 31 is provided so that the first sieve guide upper sheave 32 and the second water evaluation guide upper sheave 33 face each other, and the upper side of the trolley frame 31 has the first sieve guide upper sheave. The first water evaluation guide upper sheave 36 and the second water evaluation guide upper sheave 37 are provided so as to be perpendicular to the central axis of the 32 and the second water evaluation guide upper sheave 33. Lower sieve mounting plates 40 are fixed to both sides of the trolley frame 31. The lower sieve mounting plates 40 are provided with a pair of first water evaluation guide lower sheaves 34 and a pair of second water evaluation guide lower sheaves 35.

On the other hand, the trolley transverse cylinder 39 is installed in the girder 11, and the trolley transverse cylinder 39 is connected to the trolley frame 31. Therefore, when the trolley transverse cylinder 39 is driven, the trolley wheel 38 of the trolley frame 31 is transported along the upper guide 13 of the girder 11. The trolley transverse cylinder 39 is connected to the hydraulic pump 113 of the drive unit 110 to be described later is supplied with the driving hydraulic pressure.

The trolley departure prevention unit 50 is installed between the trolley assemblies 30 and the girders 11 to guide the trolley assemblies 30 to be reciprocated along the girders 11 and the trolley assembly 30. Is prevented from overturning in the lateral direction of the girder 11.

The trolley departure prevention unit 50, the lower guides 51, the support shafts 52, guide rollers 53, safety pins (54). The lower guides 51 are provided on both sides of the bottom surface of the top plate 12 of the girder 11 along the longitudinal direction thereof. The support shafts 52 are provided in the horizontal direction on the lower sieve mounting plates 40 fixed to both lower sides of the girders 11. The guide rollers 53 are coupled to the support shafts 52 and installed to engage the lower guides 51 so as to reciprocate along the lower guide 51. The safety pins 54 are horizontally coupled to the lower sieve mounting plates 40 and one end is positioned below the upper plate 12 of the girders 11 such that the trolley assembly 30 is rolled over in the transverse direction of the girders 11. To prevent it.

In the winch assembly 60, two winch drums 61 are formed at two legs 15 so as to correspond to two adjacent ends of the girders 11. The winch drums 61 are wound with a wire 72 to transport two trolley assemblies 30 seated on the girders 11 along the girders 11. The wire 72 is wound around the winch drums 61 and connected via the trolley assembly 30 and the lifting sheave assembly 65 to lift the lifting sheave assembly 65 when the winch drum 61 is driven. do.

The drum drive motor 64 is connected to the winch drum 61, and the drum drive motor 64 is connected to the hydraulic pump 113 of the driving unit 110 to be described later to receive driving hydraulic pressure. The first winding portion 62 and the second winding portion 63 are formed around the winch drum 61 so that both ends of the wire 72 are wound.

The first guide sheave 73 and the second guide sheave 74, which form one component of the winch assembly 60, are installed on one side of the girder 11, and the first winding part 62 and the second volume are provided. Two portions of the wire 72 wound around the mounting portion 63 pass through the first guide sheave 73 and the second guide sheave 74.

The lower and lower assembly of the trolley assembly 30 is provided with a lifting assembly 65 that constitutes the winch assembly 60. The elevating sieve assembly 65 is provided with the first sieve block 66 and the second sieve block 67 to form two rows, and the first sieve block 66 and the second sieve block 67 are provided with the first elevating structure. A sheave 68 and a second elevating sheave 69 are provided. A spreader 70 or a hook (not shown) is installed at a lower portion of the first sieve block 66 and the second sieve block 67 so that a heavy material is coupled.

One end of the wire 72 is wound around the first winding part 62, and the first guide sheave 73, the first evaluation guide upper sheave 32, the first first elevating sheave 68, and the first first horizontal After the guide lower sheave 34, the second first elevating sheave 68, the second first elevating guide lower sheave 34, the third first elevating sheave 68, and the first hydrostatic guide upper sheave 36, 2nd number evaluation guide lower sheave (37), 3rd 2nd raising and lowering sheave (69), 2nd second evaluation guide and lower sheave (35), 2nd 2nd raising and lowering sheave (69), 1st 2nd evaluation and receiving guide lower sheave (35), The other end is wound by the 2nd winding part 63 of the winch drum 61 via the 1st 2nd raising and lowering sheave 69, the 2nd water evaluation guide upper sieve 33, and the 2nd guide sheave 74. As shown in FIG.

Accordingly, the wire 72 is formed in its entirety such that both ends thereof are wound around one winch drum 61 and the other part can lift and lower the first row of the first sieve block 66 and the second sieve block 67 through the sheaves. Form a closed loop. Therefore, with one winch drum 61 and one row of wires 72, the first sheave block 66 and the second sheave block 67 of the elevating sheave assembly 65 forming two rows can be lifted in a balanced manner. have.

The wheel steering unit 80 is installed in the saddle 16 of the carrier frame 10 and connected to the steering wheel 22 to adjust the steering angle of the steering wheel 22 step by step. The wheel steering unit 80 is composed of a steering cylinder 81, the first link 88, the second link (89).

The steering cylinder 81 is composed of bidirectional cylinders in which first cylinder rods 82 and second cylinder rods 83 are formed on both sides thereof. The first cylinder rod 82 has its end coupled to the saddle 16 with a first fixed hinge pin 84. Therefore, the steering cylinder 81 is rotatably installed around the first fixed hinge pin 84. The second cylinder rod 83 has a first movable hinge pin 86 coupled to an end thereof. The first cylinder rod 82 and the second cylinder rod 83 have different strokes.

One end of the first link 88 is coupled to the saddle 16 of the carrier frame 10 by a second fixed hinge pin 85. Therefore, the first link 88 is rotated in the horizontal direction about the second fixed hinge pin (85). The other end of the first link 88 is connected to the steering cylinder 81 by the first movable hinge pin 86, and is rotated about the second fixed hinge pin 85 when the steering cylinder 81 is operated. .

One end of the second link 89 is coupled to the second movable hinge pin 87 on one side of the wheel frame 96 to be described later, and the other end is coupled to the first movable hinge pin 86. The second link 89 is rotated in the horizontal direction with respect to the first movable hinge pin 86 and the second movable hinge pin 87 at both ends of the steering cylinder 81 of the steering wheel 22. Adjust the steering angle.

The driving wheel 21 and the steering wheel 22 are provided at both ends of the wheel shaft 90 supporting the center of the driving wheel 21 and the steering wheel 22, and the wheel shaft 90, respectively. In the bearing assembly 91 supporting rotation, the wheel frame 96 coupled to the lower end of the leg 15 and the driving wheel 21 and the steering wheel 22 are coupled, and in the upper center of the wheel frame 96. It is installed by the central axis 106 is coupled, and the mounting bracket 107 is coupled to the upper end of the central axis 106.

The bearing assembly 91 includes a fixed plate 92 positioned at both ends of the wheel shaft 90, a wheel shaft bearing 93 mounted inside the fixed plate 92, and supporting both ends of the wheel shaft 90, and a fixed plate ( 92 is fixed to the cover 94 coupled to the outside of the fixing plate 92 and the reinforcing plate 100 of the wheel frame 96 to be described later to fix the fixing plate 92 to the wheel frame 96 ( 95).

The wheel frame 96 is provided with inner plates 97, reinforcement plates 100, and outer plates 103.

On the inner plates 97, slide grooves 98 are formed at both ends so that both ends of the wheel shaft 90 enter from the lower side to the upper side, and the bearing assembly 91 is supported on the outer surface. The inner plate 97 is formed with a through hole 99 to penetrate the fixing bolts 95 to be described later.

 The reinforcement plates 100 are respectively fixed to corresponding inner surfaces of the inner plates 97, and slide grooves 101 are formed at both ends so that both ends of the wheel shaft 90 enter from the lower side to the upper side, and the bearing assembly 91 The fastening hole 102 is formed to fasten the fixing bolt 95 of the). The outer plate 103 is provided on the outside of the inner plate 97 so that the installation space 105 of the bearing assembly 91 is formed on the outside of the inner plate 97 and the fixing bolt assembly groove 104 at the lower end thereof. Is formed.

The central axis 106 is coupled to the top center of the wheel frame 96 to support the wheel frame 96 to rotate in the horizontal direction. The mounting bracket 107 is installed at the upper end of the central shaft 106 and coupled to the lower end of the leg 15.

The driving unit 110 is connected to the electric motor 112 and the electric motor 112 which are connected to the generator 111 installed in the carrier frame 10 and the generator 111 and driven by the power thereof, and thereby are driven. It is made of a hydraulic pump 113.

The hydraulic pump 113 of the drive unit 110 includes a wheel drive motor 19 of the drive wheel 21, a trolley transverse cylinder 39 of the trolley wheel 38, and a drum drive motor 64 of the winch drum 61. It is connected to the steering cylinder 81 of the steering wheel 22 to drive them.

The self-propelled carrier of the present invention having such a configuration operates as follows.

The driver controls the wheel driving motor 19 and the steering cylinder by operating a controller (not shown) inside the cabin 20 while the driver is in the cabin 20. The driving wheel 21 is driven by the wheel driving motor 19 and the steering angle of the steering wheel 22 is set by the steering cylinder 81 to move the carrier to a desired position.

Wherein the wheel steering unit 80 is controlled as follows.

When the first cylinder rod 82 of the steering cylinder 81 is advanced, the first link 88 is rotated about the second fixed hinge pin 85, and the steering cylinder 81 of the first link 88 is rotated. It rotates about the 1st fixed hinge pin 84 by rotation. At this time, the second link 89 is rotated about both ends of the first movable hinge pin 86 and the second movable hinge pin 87, and the wheel frame 96 of the second movable hinge pin 87 is centered. It is rotated about the axis 106. Accordingly, the steering wheel 22 installed in the wheel frame 96 is rotated by an angle corresponding to the forward stroke of the first cylinder rod 82.

When the second cylinder rod 83 of the steering cylinder 81 is advanced, the first link 88 is further rotated about the second fixed hinge pin 85, and the steering cylinder 81 is the first link 88. It is further rotated about the first fixed hinge pin 84 by the rotation of. At this time, the second link 89 is rotated about both ends of the first movable hinge pin 86 and the second movable hinge pin 87, and the wheel frame 96 of the second movable hinge pin 87 is centered. It is further rotated about axis 106. Accordingly, the steering wheel 22 is further rotated by an angle corresponding to the forward stroke of the second cylinder rod 83.

If the wheel steering unit 80 is installed so as to face both sides of the wheel frame 96, the steering wheel 22 can be controlled to rotate to the right or left.

When the self-propelled carrier of the present invention is moved to a desired position, the occupant gets out of the cabin 20 and then uses a wired or wireless controller (not shown) to control the drum drive motor 64 and the trolley wheel 38 of the winch drum 61. The trolley transverse cylinder 39 is controlled to raise and lower the lifting assembly 65 or to traverse the trolley assembly 30 to lift a heavy object.

When the drum driving motor 64 is driven, the winch drum 61 is rotated so that two portions of the wire 72 are wound or unwound by the first winding 62 and the second winding 63. Accordingly, the first sieve block 66 and the second sieve block 67 in two rows are lifted or lowered to lift the weight coupled to the spreader 70.

When the trolley transverse cylinder 39 is driven, the trolley wheel 38 of the trolley frame 31 is transported along the upper guide, and the trolley assembly 30 and the lifting sheave assembly 65 are traversed along the girder 11.

The self-propelled carrier of the present invention has the following effects.

First, one end of the wire 72 is wound around the first winding part 62, the first guide sheave 73, the first number evaluation guide upper sheave 32, the first number evaluation guide lower sheave 34, After passing through the first elevating sheaves 68 and the first water guide upper sheave 36, the second water guide upper sheave 37, the second water test guide lower sheave 35, and the second water evaluation guide upper sheave. (33), the second lifting sheaves 69, the second guide sheave 74, the other end is wound around the second winding portion 63 of the winch drum 61, the overall form of the wire 72 Form a closed loop.

Therefore, since the first sieve block 66 and the second sieve block 67 forming two rows can be lifted in a balanced manner with one winch drum 61 and one line of wire 72, the number of parts is reduced and thus assembled. The labor and manufacturing costs are reduced accordingly.

Secondly, the trolley assemblies 30 and girders 11 guide the trolley assemblies 30 straight along the girders 11 and prevent the trolley assembly 30 from overturning in the transverse direction of the girder. Trolley departure prevention part 50 is installed.

Therefore, when the trolley assembly 30 is transported along the upper guide 13 of the girder, the guide roller 53 is transported along the lower guide 51 to guide the trolley assembly 30 to be stably transported, and the trolley assembly When 30 is to be rolled over in the lateral direction of the girder 11, the end of the safety pin 54 is supported on both sides of the bottom surface of the top plate 12 of the girder 11 to prevent the rollover. Therefore, the trolley assembly 30 runs stably on the girder 11.

Third, the steering wheel 22 of the present invention is provided with a steering cylinder 81 having a first cylinder rod 82 and a second cylinder rod 83 having different strokes, the steering cylinder 81 and steering The first link 88 and the second link 89 are connected to the wheel 22 to rotate the steering wheel 22 when the steering cylinder 81 is operated.

Therefore, when the second cylinder rod 83 of the steering cylinder 81 is advanced, the steering wheel 22 is rotated by a predetermined angle about the central axis 106, and when the first cylinder rod 82 is advanced, the steering wheel ( 22 is rotated further by a certain angle. Therefore, the present invention can adjust the rotation angle of the steering wheel 22 by combining the steering cylinder 81, the first link 88, the second link and a plurality of hinge pins without a separate sensor.

Fourth, the self-propelled carrier of the present invention is very easy to assemble the driving wheel 21 and the steering wheel 22. After the driving wheel 21 or the steering wheel 22 is installed at the center and the wheel shaft 90 provided with the bearing assembly 91 at both ends thereof is opposed to the lower portions of the slide grooves 98 and 101 of the wheel frame 96. The slide grooves 98 and 101 are pushed upwards, and the fixing bolts 95 are fastened to the fastening holes 102 of the reinforcing plate 100 to be simply assembled. Therefore, the assembly process is greatly reduced because the process of fixing the driving wheel 21 and the steering wheel 22 to the wheel frame 96 is simplified.

1 is a perspective view of a self-propelled carrier of the present invention

FIG. 2 is a front view of FIG. 1

3 is a side view of FIG. 1

4 is a plan view of FIG. 1

5 is a front view of the trolley assembly;

6 is a side view of FIG. 5

7 is a plan view of FIG.

8 is a schematic view of the winch assembly

9a to 9b are schematic plan views showing the wheel steering portion

10a and 10b is a front view and a side view showing a wheel frame

11A to 11C are schematic front views showing a state in which a driving wheel or a steering wheel is assembled to a wheel frame;

12 is a circuit diagram showing a driving unit

* Description of the symbols for the main parts of the drawings *

10 carrier frame 11: girders

12: top plate 13: upper guide

19: wheel drive motor 21: drive wheel

22: steering wheel 30: trolley assembly

31: trolley frame 32: first top evaluation guide sheave

33: Upper number of second evaluation guide lower 34

35: second vertical guide lower sheave 36: first vertical guide upper sheave

37: second vertical guide upper sheave 38: trolley wheel

39: trolley transverse cylinder 40: lower sheave mounting plate

50: trolley departure prevention part 51: lower guide

52: support shaft 53: guide roller

54: safety pin 60: winch assembly

61: winch drum 62: the first winding

63: the second winding 64: drum drive motor

65: lifting sieve assembly 66: the first sieve block

67: second sieve block 68: first lifting sieve

69: second lifting sieve 80: wheel steering

81: steering cylinder 82: the first cylinder rod

83: second cylinder rod 84: first fixed hinge pin

85: second fixed hinge pin 86: first movable hinge pin

87: second movable hinge pin 88: the first link

89: second link 90: wheel shaft

91: bearing assembly 92: fixed plate

93: wheel shaft bearing 94: cover

95: fixing bolt 96: wheel frame

97: inner plate 98,101: slide groove

100: reinforcing plate 102: fastening hole

103: outer plate 104: assembly groove

105: installation space 110: drive unit

111: generator 112: electric motor

113: hydraulic pump

Claims (6)

A pair of girders 11 installed to be parallel to the top, legs 15 installed downward at both ends of the girders 11, and saddles 16 connected to and reinforcing two adjacent legs 15, ) And a carrier frame 10 formed of driving wheels 21 and steering wheels 22 installed at lower ends of the legs 15; A trolley frame 31 having trolley wheels 38 installed thereon so as to traverse along the top of the pair of girders 11 and connected to the lower part of the trolley frame 31 is moved along the girders with the trolley frame 31. A trolley assembly 30 provided with a lifting sieve assembly 65 for lifting and carrying large and heavy materials; Installed between the trolley assemblies 30 and the girders 11, the trolley assemblies 30 guide the straight reciprocation along the girders 11, and the trolley assembly 30 is rolled over in the transverse direction of the girder. Trolley departure prevention unit 50 to prevent; A pair of winch drums 61 respectively installed on the two legs 15 so as to correspond to two adjacent ends of the girder 11 and the winch drums 61 wound up and down while driving the winch drum 61. A winch assembly 60 having a trolley assembly 30 and a wire 72 connected to the elevating assembly 65 to elevate and assemble the assembly 65; A wheel steering part 80 installed at the saddle 16 of the carrier frame 10 and connected to the steering wheel 22 so that the steering cylinder 81 is installed to adjust the steering angle of the steering wheel 22 step by step; It is installed on the carrier frame 10 and the drive wheel 21, the steering wheel 22 of the carrier frame 10, the trolley wheel 38 of the trolley assembly 30, the winch drum 61 of the winch assembly 60. The self-propelled carrier comprising a; drive unit 110 is connected to drive them. The method of claim 1, The winch drum 61 is provided with the 1st winding part 62 and the 2nd winding part 63 in the both sides of the circumference | surroundings; One end of the wire 72 is wound around the first winding part 62, and the first guide sheave 73 of the carrier frame 10 and the first sheave guide upper sheave 32 of the trolley assembly 30 are formed. 1 after passing through the number of guide lower sheaves 34, the first elevating sheaves 68 of the elevating sheave assembly 65, and the first elevating guide upper sheave 36 of the trolley assembly 30, the trolley assembly 30 2nd number evaluation guide upper sheave 37, 2nd number evaluation guide lower sheave 35, 2nd number evaluation guide upper sheave 33, 2nd elevating sheave 69 of the elevating sheave assembly 65, carrier Via the second guide sheave 74 of the frame 10, the other end is wound around the second winding 63 of the winch drum 61, so that the entire form of the wire 72 forms a closed loop; With one winch drum 61 and one line of wire 72, the first sheave block 66 and the second sheave block 67 of the elevating sheave assembly 65 forming two rows can be lifted in a balanced manner. Self-propelled carrier characterized by the above. According to claim 1, The trolley departure prevention unit 50, It is installed in the horizontal direction on the lower guide 51 which is installed in the longitudinal direction on both sides of the bottom of the top plate of the girder 11 and the lower sheave mounting plate 40 fixed to the lower side of both sides of the girder 11 Support rollers 52, guide rollers 53 coupled to the support shafts 52 and installed to engage the lower guides 51 to reciprocate along the lower guide 51, and the lower sheave mounting plate It is characterized in that it consists of safety pins (54) coupled horizontally to the (40) and one end is located below the upper plate of the girder (11) to prevent the trolley assembly (30) from overturning in the transverse direction of the girders (11). Self-propelled carrier. The method of claim 1, wherein the wheel steering portion 80, One end is coupled to the first fixed hinge pin 84 to the saddle 16 of the carrier frame 10 so as to rotate about the first fixed hinge pin 84 and the other end is connected to the steering wheel 22 A steering cylinder 81 for adjusting a steering angle of the steering wheel 22; One end is coupled to the saddle 16 of the carrier frame 10 by a second fixed hinge pin 85 and the other end is connected to the steering cylinder 81 by the first movable hinge pin 86 and the steering cylinder 81 The first link 88 is rotated about the second fixed hinge pin (85) during the operation of, One end is coupled to the steering wheel 22 by the second movable hinge pin 87, the other end is coupled to the first movable hinge pin 86, and both ends of the steering cylinder 81 are operated by the first movable hinge pin ( 86) and a self-propelled carrier comprising a second link (89) for adjusting the steering angle of the steering wheel (22) while being rotated about the second movable hinge pin (87). The method of claim 4, wherein the steering cylinder 81, The first cylinder rod 82 is installed on one side and connected to the first fixed hinge pin 84, and the other cylinder is installed on the other side and connected to the first movable hinge pin 86 and makes a different stroke from the first cylinder rod 82. Self-propelled carrier, characterized in that the bidirectional cylinder consisting of a second cylinder rod (83). The method of claim 1, wherein the drive wheel 21 and the steering wheel 22, A wheel shaft 90 supporting the center of the driving wheel 21 or the steering wheel 22; Bearing assemblies 91 provided at both ends of the wheel shaft 90 to support rotation of the wheel shaft 90; Slider grooves 98 are formed at both ends so that both ends of the wheel shaft 90 enter from the lower side to the upper side, and the inner plate 97 and the inner plate 97 on which the bearing assembly 91 is supported on the outer surface. Reinforcement plates are fixed to the corresponding inner surfaces, and slide grooves 101 are formed at both ends so that both ends of the wheel shaft 90 enter the upper direction from the lower side, and the fixing bolts 95 of the bearing assembly 91 are fastened to each other. 100 and the outside of the inner plate 97 so that the installation space 105 of the bearing assembly 91 is formed on the outside of the inner plate 97 and the fixing bolt assembly groove 104 is formed at the lower end thereof. A wheel frame 96 including an outer plate 103; A central axis 106 coupled to the top center of the wheel frame 96 to support the wheel frame 96 to be rotated in a horizontal direction; Self-propelled carrier, characterized in that installed on the lower portion of the leg (15) by the mounting bracket (107) is installed on the upper end of the central axis (106) and coupled to the lower end of the leg (15).

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