JP4464555B2 - Dolly tow bracket - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a detachable cart towing bracket that can be attached to a cart and used only when the cart is towed.
[0002]
[Prior art]
Such trolley traction brackets are well known. For example, Japanese Utility Model Laid-Open No. 4-104004 has a connecting ring for engaging a hook on the tractor side at one end of the arm-shaped main body, and is provided on the trolley at the other end. A female hook provided with an arm-side hook that engages with a U-shaped puller, and provided with a lock means for preventing the arm-side hook from being detached when engaged with a puller of a carriage. A truck traction bracket is shown. Such detachable bogie towing brackets do not require the bogie towing brackets to be always provided on the bogie side, so that unnecessary projections do not protrude from the bogie when not towing so that the occupied space can be reduced, and a large number of bogies can be stored during storage There are merits such as being able to store densely.
[0003]
[Problems to be solved by the invention]
In the above conventional example, the arm side hook and the connecting ring are integrated with the arm-shaped main body, so that it cannot be connected if there is a large difference in height between the truck and the connecting part of the towing vehicle, or when it bounces during towing, etc. May come off or deform. Further, when it is desired to connect a plurality of carts not provided with the cart pulling bracket, it is impossible to connect only with such a female cart pulling bracket. Accordingly, the present invention aims to solve such problems.
[0004]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, a first invention relating to a truck traction bracket of the present application is a female truck traction bracket that is detachably attached to a carriage, and a carriage side bracket that engages with a frame portion of the carriage, and the carriage side The arm is provided with one end swingably attached to the bracket and a coupling hole provided at the other end, and a coupling member for towing provided in another truck or towing vehicle is engaged with the coupling hole. It is characterized by that.
[0005]
The second invention is a male trolley towing bracket that is detachable in the same manner as the first invention, and is a trolley side bracket that engages with the frame portion of the trolley, and the trolley side bracket side. A coupling member supported so as to be movable up and down is provided, and this coupling member is engaged with a traction bracket of another carriage or a coupling hole provided in the traction vehicle.
[0006]
Further, each of the first and second inventions is provided with a notch portion for preventing skid in the cart side bracket, and when the cart side bracket is engaged with the frame portion of the cart, the frame is provided in the notch portion for preventing skid. A part of the part is fitted to prevent side slip.
[0007]
The third invention is characterized in that a clamp for strengthening the coupling with the carriage side is provided in the carriage side bracket in the first or second invention.
[0008]
【The invention's effect】
According to the first aspect of the present invention, even with a cart that does not have a female cart towing bracket, if the cart-side bracket is engaged with the frame of the cart, it is easy to attach the female cart towing bracket to the cart. For example, the coupling member according to the second aspect of the present invention can be connected to the coupling hole of the arm portion by engaging with the coupling hole. In addition, because the carriage side bracket that engages with the carriage frame and one end of the arm are pivotably connected, it can be easily connected even if there is a height difference with another truck or towing vehicle that is the connection partner. Even if it bounces during towing, it is absorbed by the swinging of the arm, so that deformation or the like does not occur.
[0009]
The male truck traction bracket according to the second aspect of the present invention is provided with the coupling member that is supported on the carriage side bracket side and moves up and down. Can be easily made into a bogie with a male dolly traction bracket, and the coupling member is used to connect to the coupling hole of the dolly traction bracket described in the first invention. It becomes connectable by engaging.
[0010]
Therefore, when the counterpart side lacks the dolly pulling bracket at all, the male and female dolly pulling brackets according to the first and second inventions are used in pairs, and when the counterpart side is provided only with the female type, the second type is used. By attaching the male mold according to the present invention, a plurality of carts can be easily connected and pulled.
[0011]
In addition, according to the first and second aspects of the present invention, a part of the frame portion constituting the carriage is fitted to the notch part for preventing skid by providing a notch part for preventing skid on each carriage side bracket. As a result, the side bracket of the carriage side is prevented from slipping and stable traction is possible.
[0012]
In the third aspect of the present invention, by providing a clamp on the carriage side bracket in the first or second aspect of the invention, the carriage side bracket can be securely fixed to the work of the carriage, and can be prevented from falling off due to a bounce during towing.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment will be described below with reference to the drawings. FIG. 1 shows a use state in which a male and female cart towing bracket are used at the same time, FIG. 2 is a plan view of the female cart towing bracket, FIG. 3 is a sectional view taken along line 3-3 in FIG. FIG. 5 is a sectional view taken along line 5-5 of FIG. 4, and FIG. 6 is a diagram showing a clamp from the direction of arrow A in FIG.
[0014]
First, in FIG. 1, the base frame of the carriage 1 has a quadrilateral shape including a pair of side frames 2 that extend horizontally in the front-rear direction, and a front-rear frame 3 that extends and connects between the front and rear end portions in the vehicle width direction. None, the wheel 4 is supported below the side frame 2. In addition, vertical frames 5 extending upward from the four corners of the base frame and intermediate portions of the side frame 2 and the front and rear frames 3 are provided, and auxiliary horizontal frames 7 that connect the vertical frames 5 are provided. Of the vertical frame 5, the one provided in the middle portion of the front and rear frame 3 that is the center of the vehicle body (indicated by reference numeral C in FIG. 2) is the vertical member 6. Also, as shown in FIG. 2 and the like, a lattice-shaped bottom auxiliary frame 8 is also provided between the side frame 2 and the front and rear frames 3 forming the base frame.
[0015]
A female truck traction bracket 10 is attached to the front and rear frame 3 of the carriage 1. The female trolley pulling bracket 10 includes a trolley side bracket 11 and an arm 12, and the trolley side bracket 11 engages with the front and rear frames 3. One end of the arm 12 is pivotally connected to the carriage side bracket 11 by a shaft 13, and a coupling hole 14 is provided at the other end. The arm 12 has a male carriage traction bracket 30 attached to another carriage 9. Connected.
[0016]
The carriage 9 may have the same structure as that of the carriage 1 or may have a different structure, but the side frame 2 and the front and rear frames 3 can be connected if the vertical member 6 is provided in common if necessary. Rather, the present invention has an advantage that the carts of different types can be freely connected using the female cart towing brackets 10 and 30. However, in the following description, for the sake of convenience, the bogie 9 has the same structure as the bogie 1 and each part is denoted by a common reference.
[0017]
The male truck traction bracket 30 is a carriage-side bracket 31 that engages with the front and rear frame 3, a substantially E-shaped coupler-side bracket 32 that is attached thereto, and a coupling that is supported by the coupler-side bracket 32 so as to be movable up and down. When the coupling pin 33 penetrates the coupling hole 14, the female cart towing bracket 10 and the male cart towing bracket 30 are connected to each other, and the female cart towing bracket 10 and the male cart towing bracket 30 are connected. The cart 1 and the cart 9 are connected via
[0018]
The details of the female truck pulling metal fitting 10 will be described with reference to FIGS. The carriage-side bracket 11 is a member that has a substantially U-shaped cross section and is opened downward. A side-slip prevention notch 15 is formed at an intermediate portion in the vehicle width direction, and a side-slip prevention notch 15 is formed on both sides thereof. Left and right top walls 16 are formed as the remainder. By fitting the vertical member 6 into the notch 15 for preventing skidding, the left and right top walls 16 sandwich the both sides of the vertical member 6, thereby preventing the skidding in the vehicle width direction.
[0019]
On the inner surfaces of the vertical walls 17 and 18 sandwiching the front and rear frames 3 of the carriage-side bracket 11, there are provided adjusting members 19 and 20 made of resin or the like for appropriately forming a thick strip and making it difficult to damage the contact portion.
Among these, the adjustment member 19 is attached to the vertical wall 17 entering the inside of the cart 1 with bolts and nuts. An adjustment member 20 is attached to the vertical wall 18 of the front and rear frame 3 that overlaps the outside of the carriage 1 with a bolt, and the amount of protrusion is adjusted with an adjustment bolt 21.
[0020]
Further, a clamp 22 is provided at a portion opposite to the adjustment bolt 21 across the center line, and the pressing portion 23 penetrates the adjustment member 20 and comes into contact with the front and rear frame 3. The pressing part 23 is pressed or released by the rotation of the handle 24.
[0021]
A substantially U-shaped arm-side bracket 25 opened to the arm 12 side is attached to the center of the rear surface of the vertical wall 18 by welding or the like, and its upper part is an upper part that extends obliquely downward toward the arm 12. A lower stopper 27 is provided, which forms a stopper 26 and the lower part extends obliquely upward. Moreover, the shaft 13 is supported between the left and right side walls 28, and the front end portion of the arm 12 is slidably connected. As a result, the arm 12 swings between the tips of the upper stopper 26 and the lower stopper 27 in the vertical direction within an angle θ.
[0022]
Next, the details of the male truck traction metal fitting 30 will be described with reference to FIGS. The cart side bracket 31 has the same structure as the cart side bracket 11. As shown in FIG. 5, the coupler side bracket 32 is substantially E-shaped, the lower U-shaped portion has a vertical wall 41, a lower side portion 42, and an upper side portion 44. The vertical wall 41 is connected to the vertical wall 38. And a through hole 43 is formed in the lower side portion 42 thereof.
[0023]
The upper side portion 44 is provided in parallel with the lower side portion 42, and a through hole 45 is formed at a position overlapping the through hole 43. Further, a guide wall 46 extending upward from the upper side portion 44 is provided, and the upper end portion thereof is bent to form an upper wall 47 extending parallel to the upper side portion 44, and a through hole 48 is formed at a position overlapping the through hole 45. Has been.
[0024]
When the coupling pin 33 is supported through the through holes 43, 45 and 48 so as to be movable up and down, and the handle 34 extending in the horizontal direction at the upper end is lifted, the lower end of the coupling pin 33 comes out of the through hole 43 and is shown in the figure. The stopper 50 comes into contact with the upper wall 47 and stops. When the handle 34 is released, the stopper 50 is lowered by its own weight, and the stopper 50 is located at a position where the tip of the coupling pin 33 penetrates the through hole 43 and protrudes downward. Stops in contact with the upper side 44.
[0025]
As apparent from FIG. 4, a clamp 52 is provided on the back surface of the vertical wall 38 at one end in the vehicle width direction of the carriage side bracket 31. This structure is the same as that of the clamp 22 (FIGS. 2 and 3), and the pressing portion 53 is operated with the handle 54 and is advanced or retracted through the adjusting member 40 to be pressed or released to the front / rear frame 3.
[0026]
Next, the operation of this embodiment will be described. In FIG. 1, when the carriage side bracket 11 in the female female carriage pulling metal fitting 10 is engaged with the front and rear frame 3 and pressed by the clamp 22, the female carriage pulling metal fitting 10 is firmly attached to the front and rear frame 3 of the carriage 1. It is done. Similarly, the carriage side bracket 31 in the male male carriage pulling metal fitting 30 is fitted to the front and rear frames 3 of the carriage 9 and firmly attached by the clamp 52.
[0027]
Subsequently, after holding the handle 34 of the male cart traction metal 30 and pulling up the coupling pin 33, the coupling hole 14 side of the arm 12 of the female trolley traction metal 10 is inserted between the lower side portion 42 and the upper side portion 44. When the hole 14 is made to coincide with the through hole 43 and the handle 34 is released, the coupling pin 33 descends due to its own weight and penetrates the coupling hole 14 and the through hole 43 and protrudes below the lower side portion 42 to pull the female carriage. The metal fitting 10 and the male truck pulling metal fitting 30 are connected.
[0028]
At this time, since the arm 12 is swingable with respect to the cart side bracket 11 by the shaft 13, the mounting height of the female cart towing bracket 10 and the male cart towing bracket 30 is high or low depending on the structure of each cart. Even if a difference occurs, it can be easily connected. Further, since the arm 12 is controlled to swing at a predetermined angle θ, it always extends in a substantially horizontal direction, and is easily connected.
[0029]
When traveling in this connected state, even when the vehicle bounces, the vertical movement is absorbed by the swinging of the arm 12, so that the deformation of the arm 12 can be prevented. In addition, since the side brackets 11 and 31 are provided with notch portions 15 and 35 for preventing skid, the vertical member 6 is prevented from receiving a force that causes the skid to slide on the front and rear frame 3 in the vehicle width direction. Therefore, stable towing is possible.
[0030]
Moreover, since the female cart towing bracket 10 and the male cart towing bracket 30 are detachable, they can be attached only during towing, and when not towing, there is no unnecessary overhanging portion on the cart, so the occupied space is reduced. While improving handling property, it is possible to store a large number of carts closely, which is convenient for storing. Moreover, this attachment / detachment is extremely easy and quick.
[0031]
In the case where either the male or female bogie towing bracket is lacking in the bogie, it becomes possible to pull by using the female bogie towing bracket 10 or the male bogie towing bracket 30 which is lacking, and even if both are missing, as shown in FIG. The female truck traction bracket 10 and the male truck traction bracket 30 may be used simultaneously. In addition, traction may be between trolleys or a traction vehicle with power. Further, in the case of trolleys, any number of cars can be connected as necessary by repeating the connecting structure as shown in FIG.
[0032]
Furthermore, instead of the connecting pin 33, a hook-shaped one that swings in the vertical direction may be used. The coupler side bracket 32 may be formed integrally with the carriage side bracket 31. Furthermore, the clamps 22 and 52 are not necessarily provided. In this case, if the adjustment members 19, 20, 39, and 40 have thickness adjustment and elasticity, and use a member having a high degree of adhesion, the adjustment members 19, 20, 39, and 40 can be easily attached and prevented from coming off.
[0033]
Furthermore, the cart side brackets 11 and 31 do not necessarily have a substantially U-shaped cross section, for example, an L-shaped cross section, and the side facing one vertical wall can be substituted by a clamp.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing a specification state of an embodiment. FIG. 2 is a plan view of a female truck traction bracket of the embodiment. FIG. 3 is a cross-sectional view taken along line 3-3 of FIG. [Figure 5] Sectional view taken along line 5-5 in FIG. 4 [Explanation of symbols]
1: Cart, 2: Side frame, 3: Front / rear frame, 6: Vertical member, 9: Cart, 10: Female carriage towing bracket, 11: Cart side bracket, 12: Arm, 13: Shaft, 14: Connection hole , 15: notch portion for preventing skidding, 22: clamp, 30: male dolly towing bracket, 31: dolly side bracket, 32: bracket on bracket side, 33: coupling pin, 35: notch portion for preventing side slip, 52 : Clamp

Claims (3)

A truck traction bracket that is detachably attached to a carriage, includes a carriage side bracket that engages with a frame portion of the carriage, and an arm that is pivotably attached at one end to the carriage side bracket and has a coupling hole at the other end. In addition, the coupling hole is engaged with a coupling member for traction provided in another carriage or towing vehicle ,
When the cart side bracket is provided with a notch for preventing skid, and when the cart side bracket is engaged with the frame of the cart, a part of the frame is fitted to the notch for skid prevention to prevent skidding. <br/> A female dolly pulling metal fitting characterized by the above. In a truck traction bracket that is detachably attached to a carriage, the carriage has a carriage-side bracket that engages with a carriage frame, and a coupling member that is supported so as to be movable up and down on the carriage-side bracket side. Or engage with the coupling hole of the traction bracket provided on the towing vehicle ,
When the cart side bracket is provided with a notch for preventing skid, and when the cart side bracket is engaged with the frame of the cart, a part of the frame is fitted to the notch for skid prevention to prevent skidding. A male dolly pulling metal fitting characterized in that it is made to do.  The cart traction bracket according to claim 1 or 2, wherein a clamp for strengthening the coupling with the cart side is provided on the cart side bracket.

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