JPH0355347B2 - - Google Patents

Description

[Detailed description of the invention]

(1) Object of the Invention (A) Field of Industrial Application The present invention relates to an improvement of a loading trolley used for transporting a civil engineering work vehicle such as a crane truck on a track. (B) Regarding conventional technology (a) Regarding carts using tire or roller drive systems and their problems. This technology involves placing a loading trolley for carrying a working vehicle on a track, loading the working vehicle onto the trolley, and then rolling the wheels (tires) of the mounted working vehicle.
The vehicle was configured to be able to transport the loaded vehicle by either directly rotating the wheels (made of iron) of the loading truck or indirectly rotating the wheels of the loading truck via rollers to run the loading truck on the track. (b) Self-propelled or towed trolleys This technology involves mounting a work vehicle on a trolley that runs on a track, either self-propelled or being towed, for transportation. Unlike conventional trolleys, this type of trolley does not use the engine of the vehicle on which it is mounted, but is towed and transported by the engine attached to the vehicle or another powered vehicle. (C) Problems with the conventional technology (1) The tire or roller drive system described above has the disadvantage that the transmission of driving force is not perfect, lacks hill-climbing power, and also requires brakes to be applied to the wheels of the vehicle carrying the vehicle during transportation. There is a drawback that the brakes on the loaded vehicle do not apply as expected even if the brakes are applied, and the wear and tear of the loaded vehicle's tires is extremely significant because the transportation is carried out due to friction between the tires of the loaded vehicle and the wheels of the loaded truck.
Furthermore, since this method does not cause bogies, there is a problem in that it has poor track followability on curves, and lateral pressure is generated on the track, making it easy to derail or damage points. Furthermore, self-propelled or towed trolleys not only do not use the engine of the vehicle on which they are mounted, but also require a separate power source for transportation, which is wasteful. (2) Next, a common problem with the conventional technology is that there is no loading truck configured to run and brake the truck using the drive source of the work vehicle mounted on the loading truck. In addition, as is well known, the spacing between the tracks used in Japan is limited to three types, but there are no carts with vehicle widths that can be adapted to any of them, and transportation on tracks with different gauges is difficult. There was the inconvenience of having to prepare a separate trolley each time. Furthermore, since vehicles running on tracks always meander while running, most vehicles use a bogie type with a center plate to ensure course keeping and prevent derailment. In the case of loading bogies in the technical field related to this, bogies are rarely adopted, making it difficult to maintain course, and the brake mechanism and track insulation mechanism are extremely inadequate. (C) Problems to be Solved by the Invention In view of the above, the present invention uses the power source of the loading vehicle to operate the drive mechanism and braking mechanism attached to the loading truck to drive and brake the loading truck. In addition, the structure of the loading bogie is such that it can be used on both wide and narrow tracks, and even if it is not a bogie type (there is no center plate), the loading bogie has a structure that can always maintain course and prevent derailment. At the same time, it is an object of the present invention to provide a loading trolley in which the brake device is always activated even if the user forgets to apply the hydraulic brake, thereby completely preventing accidents such as runaway. (2) Regarding the structure of the invention The present invention was invented with the above objectives, and each structure will be specifically explained in detail below with reference to the drawings. (2-1) Regarding work vehicles. The present invention relates to a loading trolley 2 on which a working vehicle 1 is mounted, and the working vehicle 1 utilizes the engine and hydraulic system 3 equipped with it, and the working vehicle itself uses a special system. There are no inventions. (2-1) Regarding the configuration of the loading trolley. The loading truck according to the present invention is composed of the following parts. (a) Trolley frame. (b) Vehicle spacing adjustment mechanism. (c) Vehicle cradle. (d) Mounting trolley drive mechanism. (e) Mounted bogie braking mechanism. The device is composed of the above-mentioned parts, and each of these parts will be explained in detail next. (A) Structure of the bogie frame (Fig. 2 A, B). As shown in FIG. 2, the truck frame is formed into a quadrilateral shape by left and right frames 5, 4, 7, and 6. Frame beams 8 and 9 are stretched between the left and right frames 5 and 4, and the frame beams 8 and 9 are stretched between the left and right frames 5 and 4. ，
The interval 9 is such that the wheels 27 of the work vehicle (hereinafter referred to as the "equipped vehicle") 1 mounted on the wheel cradle (hereinafter referred to as the "mounted vehicle") can be configured to rotate with some grace when constructing a wheel cradle to be described later. It is strung out at intervals. Also, near the left and right ends of the front and rear frames 7, 6, a first arm attachment part 14 is formed with a bolt hole 12 for attaching a third arm attachment part 32 formed on the bearing attachment arm 11. A plurality of upright mounting plates 30 for mounting one end of the bearing mounting arm 11 are fixed to the frame legs 8 and 9 at positions symmetrical to the first arm mounting portions 29. In addition, there is a bottom plate 1 on both left and right sides between frame edges 8 and 9.
5 and a tire stopper 16 constitute a wheel pedestal 17. (B) Regarding the wheel spacing adjustment mechanism. (B-1) Wheels and axles (Fig. 3 A, B). The wheels and axles are attached to both frames and both frame legs, respectively. The wheel 18 is attached to both ends of the axle 19 via bearings 20, and the bearings 20 are attached to the bearing mounting arm 11. It is attached to both front and rear frames 6, 7 and both frame legs 8, 9 so as to be movable left and right. Although a plate 24' is interposed between the bearing mounting arm 11 and the bearing 20,
If track insulation is required, use insulation plates. (B-2) Axle telescoping adjustment mechanism One of the features of the loading trolley 2 of the present invention is that the axle 1 can be adjusted to accommodate both wide and narrow track spacing.
9, the length of the wheel can be expanded and contracted to make it possible to adjust the distance between the wheels. That is, as shown in FIGS. 3A and 3B, the axle 19 is divided into two parts, and the adjustment axle mounting plate 22 is fixed at a position corresponding to the depth of the axle insertion hole 25, which will be described next, from the end of the axle 19. An adjustable axle 21 having a length of
, the axle 19 is inserted into both insertion holes 25, and both mounting plates 22 and 23 are removably mounted. 26 is its mounting bolt. Note that 25' is a sleeve interposed between the axle 19 and the insertion hole 25, and an insulating sleeve is used when track insulation is required. The length of the axle 19 can be adjusted by replacing the adjusting axle 21 or by replacing the washer 24 when the difference in track spacing is small. (B-3) Adjustment axle mounting mechanism Once the axle 19 configured as described above has been adjusted to expand and contract to match the wheel spacing to the conveyance track spacing, the axle must be mounted on the trolley frame. is the adjustment axle mounting mechanism. The adjustment axle mounting mechanism includes a first arm mounting portion 29 consisting of mounting bolt holes 12 provided in the front and rear frames 7, 6, and frame legs 8, 9.
A second arm mounting portion 31 consisting of an upright mounting plate 30 or mounting bolt holes 30' provided in the bearing mounting arm 11 and a bolt hole 3 provided in the bearing mounting arm 11
3, and a third arm mounting portion 32 consisting of a first mounting plate 36 having a diameter of 3. As shown in FIG. 4A, the first arm mounting portion 29 is designed so that a bearing mounting arm 11 can be mounted near both ends of the front and rear frames 7, 6 in accordance with the three types of track spacing currently used in Japan. For example, in the case of a track with the widest track spacing, the mounting bolt holes 12 are spaced 28 apart, and the first mounting plate 36 is mounted closest to the left and right frames 5, 4 than the mounting positions of the other two types of track gauges. Further, the bolt holes 12 are formed at intervals of 28' and 28'' so that the first mounting plate 36 of the axle mounting arm 11 can be mounted in accordance with other track gauges. As shown in FIGS. 2A and 3A, the second arm mounting portion 31 is connected to the frame rods 8 and 9, and the axle mounting arm 11 is located at a target position corresponding to the track spacing with the first arm mounting portion 29. It has a structure in which a plurality of upright mounting plates 30 are erected and fixed on the frame legs 8 and 9 so that the bearing mounting arms 11 can be mounted by adjusting the wheel spacing when the track spacing difference is very small. In this case, a washer 34 may be used between the upright mounting plate 30 and the axle mounting arm 11 (Fig. 3A). A mounting bolt hole 30' corresponding to the adjustment interval may be provided to mount the bearing mounting arm 11. In this case, a second mounting plate 38 described below is used for the bearing mounting arm 11.Next, this second arm mounting portion 31 may be constructed by only the upright mounting plate 30, or may be constructed by having only the mounting bolt holes 30'.Also, as shown in the drawing (Fig. 3A), it may be constructed by a combination of the two. Of course, this is a good thing.Next, the third arm attachment portion 32 is an attachment mechanism configured at one end of the bearing attachment arm 11, one of which is the first attachment plate 36 attached to the first arm attachment portion 29. The plate 36 has mounting bolt holes 1 provided in the first arm mounting portion 29.
The mounting bolt holes 33, which are provided so as to be able to be mounted corresponding to 2, are set at intervals of 3, corresponding to the bolt hole intervals 28.
7, and spacing 3 corresponding to spacing 28', 28''
7'. Spacings 28 and 37 are bolt holes used for mounting in the case of the widest track spacing, spacings 28' and 37' for the medium width track spacing, and spacings 28'' and 37' for the narrowest track spacing. If the second arm attachment portion is the attachment bolt hole 30' provided in the frame legs 8, 9, the second attachment plate 38 is fixed to the other end of the track attachment arm 11, and the attachment bolt hole 39 is connected to the second attachment plate 38. It may also be constructed so that it can be installed using bolt holes 30' and mounting bolts 39' (Figure 3A). (C) Structure of wheel cradle (Figures 1 and 2 A).Wheel cradle Reference numeral 17 is placed inside the truck frame, and the left and right wheels 27 of the work vehicle 1 are placed between the front and rear frame legs 8 and 9 on both the left and right sides thereof, and the wheels 27 are mounted on the wheel supports with a certain amount of time. It is formed into a box shape with a space that allows it to move back and forth and left and right within the stand, and to rotate, and the tire stopper (standing plate) 16 around it rises diagonally outward from the bottom plate 15. The bottom plate 15 of the wheel holder 17 may be formed flat, but it may be formed with a certain degree of slope from the bottom of each tire stopper 16 toward the center of the bottom plate 15. (D) Loading truck drive mechanism (Fig. 3 A, C).The loading truck drive mechanism (hereinafter referred to as the "drive mechanism") is , of course, is attached to the back of the truck frame. Hydraulic motor 40 Rotating gear 41 attached to the hydraulic motor rotating shaft Axle rotating gear 42 attached to the axle (adjusting axle in the drawing) so as to rotate coaxially with the axle Drive chain 43 spanning between rotating gear 41 and axle rotating gear 42 The hydraulic motor 40 consists of the above-mentioned parts and is connected to the hydraulic system 3 of the work vehicle 1 and the first flexible hose 44.
It is configured so that it can be connected with the hydraulic motor 40.
Although shown attached to the frame truss 8 in the drawings, it goes without saying that it may be attached to the frame truss 9 and the front wheel axle. (E) Braking mechanism of mounted bogie (Fig. 3A, Fig. 5). This mechanism is a so-called brake mechanism of the loading truck 2, and as shown in FIGS. 3A and 5, a hydraulic cylinder 45 is installed on the rear side of the truck frame, on the frame arm 9, and on the front frame 6 in the opposite position. A brake spring 48 is installed, and the spring 48 and the hydraulic cylinder 4
The spring 48 is always engaged with the tip of the piston rod 46 of No. 5.
A link mechanism 49 between the tip of the piston rod 46 and the brake
The brake shoe 50 provided on the link mechanism 49 can be actuated by the brake drum provided on the axle 19. Further, the hydraulic cylinder 45 is configured to be connectable to the hydraulic system 3 of the working vehicle 1 through two second flexible hoses 47. (3) Regarding the functions and effects of the invention The present invention has the above configuration, and the functions and effects thereof will be described next. When transporting the work vehicle 1 on the track 52 according to the present invention, the adjustment axle 21 is replaced and the length of the axle 19 is adjusted telescopically to adjust the wheel spacing of the loading cart 2 to the track spacing at the work site. Match the orbit spacing.
At this time, as already mentioned, the expansion and contraction adjustment may be carried out by attaching and detaching the washer 24 between the adjusting axle mounting plate 22 and the axle mounting plate 23. In addition, since the adjustment axle 21 is also manufactured and prepared according to the track spacing, adjustment can be carried out smoothly.If the adjustment washer 24 is also manufactured and prepared for adjustment, the expansion and contraction of the axle 19, that is, the adjustment of the wheel spacing, is extremely easy. Easy to implement. At this time, if track insulation is required, replace the washer 24 with an insulating washer,
Complete track insulation can be achieved by replacing the sleeve 25' in the axle insertion hole 25 with an insulating sleeve and replacing the plate 24' between the bearing mounting arm 11 and the bearing 20 with an insulating plate. Once the axle expansion and contraction adjustment has been completed, the axle 19 is attached to the truck frame. First, both ends of the axle are attached to the bearings 20 that are fixed to the bearing attachment arm 11, and then they are attached to one end of the bearing attachment arm 11. The first mounting plate 36 of the third arm mounting portion 32 is mounted and fixed to the first arm mounting portion 29 formed on the front and rear frames 6, 7. At this time, if the track 52 is standard (1, 435 mm), the mounting bolt holes 12 of the first arm mounting part 29 with a spacing of 28 and the bolt holes 33 of the first mounting plate 36 with a spacing of 37 are used. Similarly, the other end of the axle mounting arm 11 is connected to the upright plate 30 provided on the second arm mounting portion 31, and the mounting bolt hole spacing 28 is
Attach both with mounting bolts 39' in symmetrical positions. If the adjustment interval is small during installation, a washer 34 may be used between the bearing installation arm 11 and the upright installation plate 30 to perform the adjustment installation. The track spacing currently used in this book is 1,435 gauge bolt core 1,735mm and 1,372
Since there are only three types available: gauge bolt core 1, 672 mm and 1,067 gauge bolt core 1, 367 mm, it would be convenient to make a washer 34 for adjustment. Once the wheel spacing has been adjusted, place the loading trolley on the track,
The wheels of the working vehicle are placed on the wheel cradle 17 of the truck, and the vehicle is mounted, and the first flexible hose 44 of the drive mechanism and the second flexible hose 47 of the braking mechanism are connected to the working vehicle. If connected to the hydraulic system 3, the loading trolley 2
becomes capable of transporting the work vehicle 1. In this case, two mounting carts are used, but either the front or rear of the two mounting carts 2 may be a cart that does not have a mounting cart drive mechanism or a mounting cart braking mechanism. FIG. 6 shows a case in which a front loading truck is used that does not have a driving mechanism or a braking mechanism. Next, the engine of the mounted vehicle 1 is started, and the hydraulic system 3 sends hydraulic pressure to the hydraulic motor 40 through one of the first flexible hoses 44. When the hydraulic motor 40 is started, the rotational force is transferred to the drive chain 43.
This rotates the axle rotation gear 42, and therefore the axle 19 and the wheels 18 coaxially rotate, so that the loading truck 2 responds and conveys the loaded vehicle 1. At this time, a certain amount of hydraulic pressure is sent from one of the second flexible hoses 47 to the hydraulic cylinder 45 to push the piston rod 46 forward and loosen the braking action of the spring 48 to release the brake. Next, when stopping the operation of the loading trolley 2, hydraulic pressure is sent from the other one of the first flexible hoses 44 to stop the rotation of the hydraulic motor 40, and then one of the second flexible hoses 47 is Hydraulic pressure is sent from the hydraulic cylinder 45 to extend the piston rod 46. In such a case, the piston rod 46 compresses the spring 48 forward, and the brake shoe 50 provided in the link mechanism 49 acts on the brake drum 51, and the pressure causes the axle 19 and wheel 18 to rotate coaxially with the adjustment axle 21. The rotation of the loading trolley 2 is stopped to stop the running of the loading trolley 2. When driving again, use hydraulic cylinder 4
What is necessary is to release the brake operation in step 5 and start the drive motor 40 again. Although the loading truck 2 is braked as described above, there is a possibility that the hydraulic cylinder 45 will not operate and the brake will not be applied due to forgetting to apply the brake or failure of the hydraulic mechanism. In such a case, there is a risk that the loading cart with the work vehicle 1 mounted thereon may run out of control. In order to prevent such accidents in the present invention, a hydraulic cylinder 45 and a spring 48 are used together in the braking mechanism, and if the hydraulic mechanism fails, the spring 48 pushes the piston rod 46 and activates the link mechanism to activate the brake shoe 50. The brake drum 51 is adapted to act on the brake drum 51. In other words, when the hydraulic system is not operated, spring 4
Since the brake is always applied at step 8, this has the great effect of completely preventing runaway accidents during driving or work even if a failure occurs in the hydraulic system. Next, the wheel holder 17 is attached to its tire stopper 16.
The wheels 27 extend upward from the bottom plate 15 in a widening manner, and the width of the wheel cradle 17 is designed so that the mounted wheels 27 can freely rotate back and forth and left and right within the wheel cradle 17. Therefore, even if the bottom plate 15 is flat, the wheels 27 rotate in response to the left and right shaking during transport, and act so that the center of the wheel is always at the center of the bottom plate 15. Sufficient course keeping performance is ensured. In particular, when the bottom plate 15 is configured to be inclined from the bottom of the tire stopper 16 toward its center, the axle 27 has a stronger force that tends to constantly move to the center of the bottom plate 15 with free left and right rotational movement. This has the effect of ensuring even better course keeping. In other words, it is generally known that vehicles running on a track always make a meandering motion even if it is on a straight track, so it is necessary to always return it to the center of the track to prevent derailment, and when on a curve, it is necessary to always return it to the center of the track to prevent derailment. A large lateral pressure is exerted on the train, and if this is not absorbed, the train will derail, so measures are taken to prevent derailment. As one of the means for this purpose, a bogie system having a core plate is often adopted, but the prior art of this type of bogie mentioned above had a major drawback in that it almost never became a bogie. However, the loading trolley 2 of the present invention
In this case, it is a bogie system without a center plate, and when the left and right axles 27 of the loaded vehicle 1 are subjected to meandering motion or lateral pressure on a curve while the loaded vehicle 1 is being transported, the left and right wheels 27 are rotated. cradle 17
(see Fig. 6), the wheel cradle 17 has a large degree of freedom relative to the wheels 27 of the vehicle on which it is mounted, and the bottom plate 1
5 is inclined toward its center, so the wheel 27
The center of the loading vehicle 2 is located at the center of the meandering loading vehicle 2, and the course maintenance of the loading vehicle 2 is ensured.Moreover, deviation of the loaded vehicle 1 to one side and derailment due to lateral pressure are prevented, and there is no adverse effect on the points. It has the advantage that it can easily pass through sharp curves, and furthermore, since the springs of the tires 27 and the mounted vehicle 1 act as pillow springs, it has good followability against cants and good adhesion performance. In other words, it is a bogie wheel without a center plate, which has great functions and effects. Furthermore, in the present invention, the power source (hydraulic system) of the loading vehicle 1 is used as the power source to drive the hydraulic motor 40 of the loading truck 2, so that the loading truck 2 does not require a new power source for traveling. It is also extremely easy to connect with the vehicle, and does not cause wear of the tires of the vehicle 1 unlike the conventional tire/roller drive system. Next, conventional mounting carts had to be manufactured and used separately for each track spacing, but in the present invention, it is sufficient to prepare an adjustment axle 21 according to the track spacing, and a washer 24 for adjustment is used. This has the advantage that by preparing two adjustment axles, it is possible to transport the work vehicle 1 and carry out construction work on any track in Japan, and furthermore, the brake is of a simple structure and works perfectly, so it is extremely safe. be. To summarize the above-mentioned effects, the bogie on which the work vehicle of the present invention is mounted is not a bogie, but it has the effect of being a bogie without a center plate, completely preventing derailment at curves, etc., and the braking is The interaction between hydraulic pressure and springs completely prevents runaway, and the wheel spacing can be adjusted freely with the axle and washers, making it instantly compatible with any track, wide or narrow.In addition, the vehicle equipped with it has a special drive source. It does not require a power source, and furthermore, it has the great effect of eliminating the wear and tear of the tires of the vehicle on which it is mounted, such as a tire or roller drive system.

[Brief explanation of drawings]

The drawings show an embodiment, and FIG. 1 is an explanatory side view showing a state in which a work vehicle is mounted on a loading trolley. FIG. 2A is a perspective explanatory view of the truck frame, FIG. 2B is a perspective explanatory view showing the related structure of the bearing mounting arm, the second arm attachment, and the third arm attachment part,
Figure 3A is a rear view of the loading truck, Figure 3B is a partial cross-sectional view of the axle expansion/contraction adjustment mechanism, Figure 3C is a side view of the loading truck, and Figure 4A is an explanatory view of the mechanism installed on the rear frame. Expanded side view of the first arm attachment part, 4th
Figure B is an enlarged side view of the third arm attachment part, the fifth
The figure is a partially cross-sectional explanatory view of the braking mechanism of the loading truck, and FIG. 6 is an explanatory diagram showing the course-keeping performance of the loading truck on the traveling track. 1...Work vehicle (equipped vehicle), 2...Mounted trolley, 3...Hydraulic system, 4...Right side frame, 5...
... Left side frame, 6 ... Rear frame, 7 ... Front frame, 8, 9 ... Frame arm, 11 ... Bearing mounting arm, 12 ... Mounting bolt hole of first arm mounting part, 15 ... Wheel Bottom plate of pedestal, 16...
Tire stopper, 17...Wheel rest, 18...
...Wheel of loading truck, 19...Axle of loading truck, 2
0... Bearing, 21... Adjustment axle, 22... Adjustment axle mounting plate, 23... Axle mounting plate, 24... Washer (insulating washer), 24'... Plate (insulating plate), 25... Axle insertion Mounting hole, 25'...Sleeve (insulating sleeve), 26...Mounting bolt,
27...Wheels of the work vehicle, 29...First arm mounting portion, 30...Vertical mounting plate, 30'...
Mounting bolt hole, 31...Second arm mounting part, 32
...Third arm mounting part, 33...Mounting bolt hole of first mounting plate, 34...Washer used in second arm mounting part, 36...First mounting plate, 3
8... Second mounting plate, 40... Hydraulic motor, 42... Axle rotating gear, 43... Drive chain, 44... First flexible hose, 45... Hydraulic cylinder, 46... Piston rod, 47... …
Second flexible hose, 48... Spring (for brake), 49... Link mechanism, 50... Brake shoe, 51... Brake drum, 52... Track.

Claims (1)

[Claims] 1. In a loading truck that transports a working vehicle on a track by a loading truck running on a track, the loading truck is provided with an adjustment axle for adjusting the wheel spacing of the loading truck in accordance with the track spacing. A wheel spacing adjustment mechanism is provided for use and attachment of the axle, and each wheel of the work vehicle can be moved or rotated forward, backward, left, and right with some margin. a wheel mounting platform having a width such that the wheel mounting platform has a tire stopper that restricts the wheel so that the wheel to be placed does not move beyond the range of the width; One is to provide a hydraulic motor for driving the axle of the wheel of the truck,
The hydraulic motor can be connected to the hydraulic system of the working vehicle through a flexible hose, and a braking device consisting of a hydraulic cylinder, a piston rod, a spring, etc. is provided to brake the mounted truck,
The hydraulic cylinder can be connected to the hydraulic system of the working vehicle with a flexible hose, and the driving mechanism and braking mechanism of the bogie are operated using the power source of the working vehicle, A trolley carrying a moving work vehicle. 2. Claim 1, in which the wheel spacing adjustment mechanism comprises an adjusting axle, an adjusting axle mounting plate, and an axle mounting plate.
Loading trolley as described in section. 3. The braking device comprises a brake shoe and a brake drum, in which a piston rod of a hydraulic cylinder interlocks with a brake spring at its tip and is connected to a brake link mechanism, and a brake drum. The loading trolley described in Section 2. 4. The tire stopper of the wheel mount is formed to face outward and rise obliquely from the bottom plate, and the bottom plate is inclined to some extent downward from the center of the bottom plate to form the wheel mount. or second
The loading trolley described in item 1 or 3.