JPS6124574Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to an improvement of the plow attachment/detachment mechanism in snow removal trucks. The objective of the present invention is to provide a snow removal truck that can be operated safely under reliable conditions.

The snow removal trucks that have been widely used in Japan up until now are:
These can be classified into dedicated snow removal types that are used only for snow removal work, and multi-purpose vehicle types that are used only for snow removal during the snowy season and are used for transportation, civil engineering work, etc. at other times of the year. Both types remove snow using a plow attached to the front of the vehicle, but it goes without saying that in terms of operability, the multi-purpose vehicle types that can be used all year round are more advantageous than the dedicated snow removal types that can only be used in winter.

However, as is well known, in our country,
According to the "Safety Standards for Road Transport Vehicles" based on the provisions of Chapter 3 of the Road Transport Vehicle Act, it is prohibited for trucks to be transported with snow removal plows attached. In such cases, it becomes necessary to frequently attach and detach the plow, and there has been a demand for the development of a simple attachment and detachment mechanism. Jitsukai 1976
The "snow removal truck" disclosed in No. 5015 was proposed by a member of the applicant's group in order to meet this request, but even in this case, when the plow is attached, the snow removal truck is attached to the truck body. Adjusting the position facing the plow and operating the hydraulic pressure required considerable skill, and it was far from ideal for attaching and detaching the plow.

The present invention has been made in order to meet the above-mentioned requirements for conventional snow removal trucks, especially shared vehicle type snow removal trucks, and will be explained based on the illustrated embodiment. A turn traverse bus 2 which is pivoted at the center and is provided so that both ends of the bus can freely move up and down.
A pair of mandible members 4 are fixed symmetrically near both ends of the turn truss bus 2 and have a guide slope 42 formed in the front portion thereof to guide and slide the joint bar 31 of the snow removal plow 3 into the catch portion 41. and; this mandible member 4
Maxillary member 5 has a hook portion 51 for restraining the joint bar 31 introduced into the catch portion 41 of
an actuating mechanism section 6 for swinging the maxi-relief member 5; a lock pin 7 for locking the maxi-relay member 5 to the mandible member 4 when the maxi-relief member 5 is in the joint bar restraining position; and a lock pin 7 for moving the lock pin 7 forward and backward. The present invention realizes a simple attachment/detachment mechanism for a plow in a snow removal truck, which is characterized in that it includes a hydraulic cylinder 8 for controlling the locking relationship between the maxillary member 5 and the mandible 4.

To describe the illustrated embodiment in more detail:
As shown in FIG. 1, the turn truck bus 2 has its central portion pivotally supported by a pivot pin 12 on a cross member 11 installed horizontally at the front of the truck body 1, so that the turn truck bus 2 has both left and right ends. vertical movement is allowed.

The mandible members 4 are provided symmetrically on both ends of the turn traverse 2, and the two and 4 are usually integrated by welding means. The illustrated mandible member 4 has an interval 43 in the middle in which a maxillary member, which will be described later, is to be installed, and is specifically constructed by engaging a stay plate 44 made of two thick steel plates. . As shown in FIG. 2, this mandible member 4 has an upwardly sloped guide slope 42 formed from the front end to the center portion, and a concave arc-shaped catch portion 41 is continuous to the guide slope 42 at the center portion. It is provided. That is, this catch part 41 is manufactured in a shape corresponding to the joint bar 31 of the snow removal plow 3, and when the plow 3 is installed, the joint bar 31 is moved by the forward movement of the truck body 1.
The structure is such that it comes into contact with the guide slope 42, moves up there, and is easily received by the catch portion 41.

In the example shown in FIG. 2, the maxillary member 5 has a hook-shaped overall shape, and is inserted into the interval 43 of the mandible member 4, and its approximately central portion is pivoted by a pivot 52. It is able to swing up and down. This maxi release member 5 has a hook portion 51 on the lower surface of its front end, and by swinging downward, the hook portion 51 restrains the joint bar 31 of the snow removal plow introduced into the catch portion 41. . In the illustrated example, a wing piece 53 is provided protruding from the rear upper surface of the maxillary member 5, and when the wing piece 53 is pulled upward by the operating mechanism section 6, the hook section 51 is lowered and closed. However, when the wing piece 53 is moved downward, the hook portion 51 is raised and opened. Furthermore, in the illustrated example, a through hole is provided in the side surface of the rear end of the maxillary member 5 and the mandible member 4, and by inserting the lock pin 7 therethrough, the maxillary member 5 can be attached to the joint bar of the snow removal plow. It is designed to be locked with 31 inhibited.

Although the actuating mechanism 6 is implemented as a wire release in the illustrated example, it is of course possible to employ a fluid pressure actuated cylinder or a solenoid mechanism.

The lock pin 7 is formed into a rod shape that can be inserted into a through hole formed on the side surface of the mandible member 4 and the maxillary member 5, and is connected to the operating shaft of the hydraulic cylinder 8.

A hydraulic cylinder is normally used as the fluid pressure operated cylinder 8, and the turn traverse 2 is arranged so as to face each of the pair of mandible members 4.
Two wires are fixed to the.

Further, in the figure, reference numeral 9 denotes guide plates, which are respectively disposed at both left and right ends of the turn traverse. This guide plate 9 is connected to the truck body 1.
This is effective when attaching the snow removal plow 3 to the snow removal plow. When the truck body 1 moves forward, both ends of the joint bar 31 of the snow removal plow come into contact with the inner surface of the guide plate 9, and the joint bar 31 is regulated by the guide plate 9 to remove snow. This makes connecting the plow surprisingly simple and reliable.

Since the mechanism of the present invention is constructed as described above, when it is necessary to remove the snow removal plow, the hydraulic cylinder 8 is retracted to release the restraint of the maxillary member 5 by the lock pin 7, and the operating mechanism section 6 is operated. When the hook portion 51 of the maxi-relay member 5 is opened, all that is left to do is to move the truck backwards, and the snow removal plow 3 is moved to the truck body 1.
This makes it possible to separate the Also,
When the snow removal plow 3 is attached to the truck body 1, if the truck body 1 is moved forward toward the joint bar 31 of the snow removal plow with the maxillary member 5 open, the guide slope 42 of the mandible member 4 will move toward the joint bar. 31 is scooped up and introduced into the catch part 41, and then the maxillary member 5 is closed by the action of the operating mechanism part 6, and the hook part 51 restrains the joint bar 31 from the catch part 41 of the mandible member. Therefore, when the fluid pressure actuated cylinder 8 is moved to protrude, the lock pin 7 causes the maxillary member 5 to move.
is locked to the mandible member 4, and thus the truck body 1 and the snow removal plow 3 are securely connected in a mechanically stable state.

As described above, according to the present invention, it is possible to perform the attachment and detachment of the snow removal plow surprisingly easily, quickly and reliably, which was difficult with conventional snow removal trucks. Snow removal operations can be carried out safely without the disadvantages of incomplete snow removal, and its practical effects can be said to be extremely large.

[Brief explanation of the drawing]

Figure 1 is a plan view showing the entire structure of the simple attachment/detachment mechanism of the present invention, Figure 2 is an enlarged perspective view of the main parts of the mechanism, and Figure 3 is a simplified diagram of the connection between the truck and the snow plow. FIG. 1...Truck body, 11...Cross member, 2...Turn truck bus, 3...Snow plow,
31... Joint bar, 4... Mandable member, 41... Catch part, 42... Guide slope, 5... Maxi release member, 51... Hook part, 6... Operating mechanism part, 7... Lock pin, 8...
...hydraulic actuated cylinder.

Claims (1)

[Scope of utility model registration request] A turn truck bus 2 is pivotally connected at the center to a cross member 11 at the front of a truck body 1, and is provided so that both ends thereof can freely move up and down.
A pair of mandible members 4 are fixed symmetrically near both ends of the turn truss bus 2 and have a guide slope 42 formed in the front portion thereof to guide and slide the joint bar 31 of the snow removal plow 3 into the catch portion 41. and; this mandible member 4
Maxillary member 5 has a hook portion 51 for restraining the joint bar 31 introduced into the catch portion 41 of
an actuating mechanism section 6 for swinging the maxi-relief member 5; a lock pin 7 for locking the maxi-relay member 5 to the mandible member 4 when the maxi-relief member 5 is in the joint bar restraining position; and a lock pin 7 for moving the lock pin 7 forward and backward. The maxi release member 5 and the mandible member 4
A simple attachment/detachment mechanism for a plow in a snow removal truck, characterized in that it includes a hydraulically actuated cylinder (8) for controlling the locking relationship between the plow and the plow.