JP3982704B2 - Cabbutyl truck cabbutylt equipment - Google Patents

Description

  The present invention relates to an improvement in a cabylt device that tilts up a cab by interposing an expansion / contraction means between a chassis frame of a cab overtrack and a cab member.

  FIG. 6 shows an example of a cab overt mechanism of a cab over track. In the figure, a cab (reference numeral 12 indicates an underfloor frame of the cab) is rotatably supported around a tilt center C by a bracket 13 provided at a front end portion of a chassis frame 11. An expansion / contraction means 10A having both ends rotatably attached to the frame 11 and the cab member 12 is interposed. The expansion / contraction means 10A includes a tilt cylinder, and pressure fluid is contained in the cylinder. It is configured to inject and extend to tilt up the cab.

In this expansion / contraction means, the cylinder tube side of the tilt cylinder is engaged with the chassis frame side, the tip of a rod extending from the cylinder tube is engaged with the cab side, and one end is supported on the rod side so that the cylinder side A stopper lever 3 </ b> A extending in the direction is provided.
The stopper lever 3A is formed with a concave and convex engaging portion below the side surface, and engages with a stopper mechanism provided on the cylinder tube side to stop and hold the cab at a predetermined tilt position. Yes.

In such a cabylt mechanism, the cab rotates and tilts around the front end of the frame, so that the cab tilts forward when tilting up, and tilting up is not possible if there is no space in front of the stop position of the vehicle.
However, the necessity for tilt-up occurs not only when there is such a space, but there is a case where it is possible to stop in the middle even if a full stroke is not possible in a narrow space.

  Therefore, it is desired to provide a stopper member that restricts the stroke so that the tilt cylinder does not make a full stroke so that the tilt cylinder can be stopped in the middle of the tilt up. In addition, the work becomes troublesome.

In addition, the technique about the improvement of the stopper mechanism in such a cabylt mechanism is disclosed as a prior art (for example, refer patent document 1).
However, this technique prevents the cab from moving past the dead point and moving forward at the time of tilting up, and does not solve the above-mentioned problem.
JP 2000-264260 A

  The present invention addresses the above-described problems, and an object thereof is to provide a cab over-track cabylt device that can perform a full stroke of tilt-up and a halfway stop in a simple operation.

  According to the present invention, in the cab tilting device for tilting up the cab with the expansion / contraction means (cylinder assembly 10) interposed between the chassis frame (11) of the cab overtrack and the cab member (12), the expansion / contraction means (10) is engaged with the chassis frame (11) and the cab member (12) by one end of the cylinder tube (1) and the other end of the rod extended from the piston in the cylinder tube (1). One end of the stopper lever (3) is engaged with the rod side, and a locking portion (3a) formed on the stopper lever (3) and locking means (stopper 4) provided on the cylinder tube are provided. The stopper means is configured to restrict expansion / contraction of the expansion / contraction means (10), and the stopper portion (3a) of the stopper lever is in the middle of the stroke of the expansion / contraction means (10). An engagement preventing member (cover material 25) is provided to engage with the locking means (stopper 4) of (1) and prevent engagement at an intermediate position thereof, and the engagement preventing member (25) Is a forbidden position for completely covering the locking portion (3a) formed on the stopper lever (3) and prohibiting the engagement between the locking portion (3) and the locking means (4), and the locking portion ( 3a) can be exposed to move between the allowable positions allowing the engagement with the locking means (4), and the engagement preventing member (25) rotates relative to the stopper lever (3). Thus, the prohibition position and the allowable position are configured to be movable (claim 1).

  The stopper lever (3) is provided with a rotating shaft member (26), and a through hole (25a) is formed near one end of the engagement preventing member (25). The projecting rotary shaft member (26) is inserted into a through hole (25a) formed in the engagement preventing member (25), and the inner diameter of the through hole (25a) causes the rotary shaft member (26) to rotate. It is perforated larger than the outer diameter of the rotating shaft member (26) to an allowance (Claim 2).

  The engagement preventing member (25) completely covers the locking portion (3a) formed on the stopper lever (3) and prohibits the engagement between the locking portion (3a) and the locking means (4). In the position, it is configured to be fixed to the stopper lever (3).

  The engagement preventing member (25) is provided with a second through hole (25b) in addition to the through hole (25a), and a fastening means (fixing bolt 28) is provided in the second through hole (25b). The engagement preventing member (25) is inserted and fixed to the stopper lever (3) (claim 4).

  The engagement preventing member (25) is formed at the stopper lever (3) at a position where the engagement portion (3a) formed on the stopper lever (3) is exposed to allow engagement with the engagement means (4). ) Is not fixed to the above (claim 5).

  The stopper lever (3) is provided with an engagement preventing member mounting means (stopper pin 29), and the mounting means (29) is formed with an engagement preventing member (25) on the stopper lever (3). The engagement preventing member (25) is arranged so as to be placed when the engagement portion (3a) and the engagement means (4) are allowed to engage with each other. 6).

According to the present invention having the above configuration,
(A) Since the locking prevention member can be easily rotated and set to the engagement allowable position and the prohibition position so as to be rotatable around the rotary shaft member, the cab can be set between the full stroke position and the midway stop position. You can easily select and tilt up.
(B) The selection operation is a simple operation of attaching and detaching the fixing bolt of the cover material and the rotation of the cover material, and there is little risk of losing parts.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIGS. 1 and 2 show the expansion / contraction means in the cabylt apparatus described with reference to FIG. 6. FIG. 1 shows a full stroke and FIG. 2 shows a halfway stop.
In the figure, the expansion / contraction means is interposed between the chassis frame 11 and the cab member 12z of the cabylt mechanism described with reference to FIG. 6, and the cylinder assembly 10 that tilts up the cab by its extension, the stopper lever 3, and the like. It is configured. And the lower side is the cylinder tube 1 and the lower end part shown with the code | symbol A is rotatably attached to the flame | frame 11, The rod 2 extended | stretched from the piston in the cylinder tube 1 is hidden in the stopper lever 3 in the figure. However, it is rotatably attached to the cab member 12z at its tip portion indicated by reference numeral B.

  The stopper lever 3 has a distal end portion that is coaxially engaged with an engagement shaft B with the cab member 12z at the distal end of the rod 2 and has a cross-sectional shape that is formed in an inverted U shape so as to cover the rod portion. In the state shown in the figure, it can be rotated counterclockwise around the point B, can be moved in the direction of opening with respect to the rod axis, and can be engaged with the cylinder tube side stopper 4 as a locking mechanism as will be described later. It is.

Hereinafter, referring also to FIG. 3 (at full stroke) and FIG. 4 (when stopped halfway) showing the details of the locking mechanism, the open end of the inverted U-shaped cross section is located near the end of the stopper lever 3 near the frame. A locking portion 3a is formed by a serrated projection.
Further, a stopper 4 is provided on the end of the cylinder tube 1 closer to the cab so as to protrude laterally (FIG. 4), and the end of the chassis frame closer to the rod (stopper) is brought into contact with the locking portion 3a of the stopper lever. The extension on the lever) side is regulated.

  In the state shown in FIG. 3, a cover member 25 that covers the protrusion is attached to the stopper lever locking portion 3 a formed in a sawtooth shape by two bolt members (rotating shaft member 26, fixing bolt 28). In the case of normal full stroke tilt-up, the stopper 4 is configured to pass through without being engaged.

  The cover member 25 is formed so as to cover the engaging portion 3a of the stopper lever in the attached state as described above, and the shape of the side surface 25d of the portion covering the engaging portion 3a is formed on an inclined surface. It can be slid over the stopper 4 on the tube side. Further, first and second through holes 25a and 25b (see FIG. 5) are formed in the vicinity of both ends of the cover member 25, respectively. The first through-hole 25 a is drilled large enough to allow rotation with respect to the outer diameter of the rotating shaft member 26.

Referring to FIG. 4 again, the stopper lever 3 is provided with screw holes in the positions corresponding to the through holes 25a and 25b of the cover member 25 in the vicinity of the locking portion 3a. The fixing shaft 28 is screwed to the rotary shaft member 26 and the other.
A stopper pin 29 is erected as a mounting means for the cover member 25 at a position where the lower end of the cover member 25 is placed at the engagement allowable position (described later).

  With such a configuration, the cover member 25 can rotate about the rotary shaft member 26, and, as shown in FIG. If the fixing bolt 28 is fixed, the fixing bolt 28 is removed, and the cover member 25 is rotated 180 degrees, the cover member 25 is placed on the stopper pin 29 and becomes the engagement allowable position H.

Therefore, if the cover member 25 is set to the engagement prohibition position F, the stopper lever 3 can be cab-up to the full stroke without engaging the stopper 4, and if it is set to the engagement allowable position H, the stopper lever 3 can be stopped. The lever locking portion 3a engages with the stopper 4 and stops at a position halfway up the tilt.
The switching operation can be performed by removing the fixing bolt 29 and rotating the cover member 25.
In addition, if the 2nd through-hole 25b of the cover material 25 is notched in a counter rotation direction, a cover material can also be rotated only by loosening a fixing bolt.

The side view which shows the full stroke state of the expansion-contraction means of the carbylate apparatus by this invention. The side view which shows a halfway stop state same as the above. The perspective view which shows the detail of the latching mechanism of FIG. The perspective view which shows the detail of the latching mechanism of FIG. Explanatory drawing of the engagement prohibition position and engagement allowable position of a cover material. The side view which shows a carbylt mechanism.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Cylinder tube 3 ... Stopper lever 3a ... Locking part 4 ... Stopper 5 ... Cover 10 ... Cylinder assembly 11 ... Chassis frame 12 ... Cab 13 ... -Tilt bracket 25 ... Cover material 26 ... Rotating shaft member 28 ... Fixing bolt 29 ... Stopper pin

Claims (6)

  In a cabylt device that tilts up a cab by interposing an expansion / contraction means between a chassis frame of a cab overtrack and a cab member, the expansion / contraction means includes one end of a cylinder tube and a rod extended from a piston in the cylinder tube. The other end of the stopper is engaged with the chassis frame and the cab member. One end of the stopper lever is engaged with the rod side, and the engaging portion formed on the stopper lever and the engagement provided on the cylinder tube are engaged. The stopper means engages with the stopper means to limit the extension / contraction of the extension / contraction means, and the stopper lever locking portion is formed to engage with the cylinder tube locking means at an intermediate position of the extension / contraction means stroke. An engagement preventing member for preventing engagement at the midway position is provided, and the engagement preventing member completely covers the locking portion formed on the stopper lever. It is movable between a prohibition position that prohibits engagement between the locking portion and the locking means and an allowable position that exposes the locking portion and allows engagement with the locking means. A cab overtrack cabylt device, wherein the prevention member is configured to move between the forbidden position and the allowable position by rotating with respect to a stopper lever.   A rotation shaft member is projected from the stopper lever, and a through hole is formed near one end of the engagement prevention member. The rotation shaft member projected from the stopper lever is formed at the engagement prevention member. 2. A cab overtrack cabbutyl device according to claim 1, wherein the caliber device is inserted into the through hole, and the inner diameter of the through hole is drilled larger than the outer diameter of the rotating shaft member to allow the rotating shaft member to rotate.   The engagement preventing member is configured to be fixed to the stopper lever at a position where the engagement portion formed on the stopper lever is completely covered and the engagement between the engagement portion and the engagement means is prohibited. The cab overtrack cabbutyl device according to any one of claims 1 and 2.   The engagement preventing member is formed with a second through hole in addition to the through hole, and a fastening means is inserted into the second through hole to fix the engagement preventing member to the stopper lever. The cab overtrack cabbutyl device according to claim 3.   The engagement preventing member is configured not to be fixed to the stopper lever at a position where the engaging portion formed on the stopper lever is exposed to allow engagement with the engaging means. Item 5. A cab overtrack cab over truck device according to any one of items 1 to 4.   The stopper lever is provided with an engaging prevention member mounting means, and the mounting means is a position at which the engagement preventing member allows the locking portion formed on the stopper lever to engage with the locking means. 6. The cab overtrack carbylating device according to claim 5, wherein the engagement preventing member is placed on the cab overtrack.