JPH08118968A - Installation structure of rubber vibration insulator for radiator in travelling vehicle for work - Google Patents

Abstract

PURPOSE: To install a radiator on a bracket without making a through hole through which a piping port passes a long hole. CONSTITUTION: This is installation structure of a rubber vibration insulator for a radiator on a working travelling car constituted to install the rubber vibration insulator 17 on an installation seat 18 to be installed on a bottom plate 10 free to disconnect in such a way as to install it after the radiator 7 by projectively providing a positioning pin 16 from a lower surface of the radiator 7 and drilling a through hole 10a in the size large enough for the rubber vibration insulator 17 to pass through on the bottom plate 10 of a bracket.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting a vibration isolating rubber for a radiator in a working vehicle such as a construction machine such as a hydraulic excavator or an agricultural machine such as an agricultural tractor.

[0002]

BACKGROUND OF THE INVENTION Generally,
A radiator for cooling the engine is attached to a traveling vehicle for construction machinery, agricultural machinery, etc., but such a radiator is internally fitted to a bracket integrally formed with a shroud for incorporating a fan. In this case, the radiator should be installed so that the positioning pin protruding from the lower surface of the lower tank of the radiator is inserted into the insertion hole of the vibration-proof rubber on the bracket bottom plate for vibration-proof positioning. There is something I did. By the way, in the radiator mounted in this way, it is necessary to penetrate the front and rear plates facing the lower tank with the piping ports projecting in the front-rear direction from the tanks in the upper and lower parts. Therefore, as shown in FIG.
In this case, since the anti-vibration rubber 34 is configured to be retained and supported on the upper surface of the bottom plate 36 fixed to the mounting seat 35 in this case, the anti-vibration rubber 34 is incorporated prior to mounting the radiator. Therefore, the through hole 31a for the piping port 32 that is opened in the front plate 31 is a long hole that is long upward, and the positioning pin 33 is the insertion hole 3 of the vibration isolating rubber 34.
It is necessary to consider so that the pipe port 32 can be penetrated in accordance with the fact that the pipe port 32 enters the mountain 4a in a state where the mountain crosses. However, if this is left as it is, the upper portion of the through hole 31a is left open, and the cooling air leaks from there, thus lowering the cooling efficiency. Moreover, since the front plate 31 must secure an opening space for the elongated through hole 31a,
The lower part of the radiator is inevitably hidden by the front plate 31 to lower the cooling efficiency, and accordingly, it is necessary to use a large radiator.

[0003]

SUMMARY OF THE INVENTION The present invention was devised with the object of providing a structure for mounting a vibration isolating rubber for a radiator in a working vehicle capable of eliminating these drawbacks in view of the above circumstances. The radiator is internally fitted to the bracket integrally formed with the shroud for incorporating the fan, and the piping port projecting in the front-rear direction from the radiator is provided on the upper side of the cooling air passage of the bracket. In a traveling vehicle that penetrates through a through hole provided in the front plate, the radiator is provided with a positioning pin protruding from the lower surface of the radiator through an insertion hole of a vibration isolating rubber arranged on the bottom plate of the bracket. At the time of positioning and mounting, the bracket bottom plate shall be provided with at least a through hole having a size through which the vibration-proof rubber penetrates, while the bracket bottom plate is penetrated through the through hole. Rubber cushion incorporated Te are those supported retaining the mounting seat to removably fasten the bracket bottom plate characterized by being configured to be retrofitted the radiator. In this case, the bracket includes a side plate and a bottom plate for surrounding the left and right side surfaces and the bottom surface of the radiator, a front plate provided on the upper side of the cooling air passage, and a fan assembly for opening provided in the front plate. Of the shroud plate, and the engaging side part is left in the corner part of the opening formed in the front plate, and the engaging side part is fitted into the engaging groove formed in the side plate. It is characterized by being attached.

According to the present invention, when the radiator is assembled to the bracket, the radiator can be mounted without making the through hole through which the pipe port penetrates into a long hole.

[0005]

Embodiments of the present invention will now be described with reference to the drawings. In the drawings, reference numeral 1 denotes a hydraulic excavator, and the hydraulic excavator 1 is configured by using various member devices such as a lower traveling body 2, an upper revolving superstructure 3, a boom 4, a bucket 5 and the like as in the conventional case. However, a bracket 8 for mounting a radiator 7 for cooling the engine is provided in the engine room 6 formed in the rear portion of the upper swing body 3.
, Which is where the invention is implemented.

That is, the bracket 8 has a side plate 9 and a bottom plate 10, and a side plate 9 and a bottom plate 1 which are formed in a substantially upside down shape.
Front plate 11 integrally provided on the front edge of 0 (on the side above the cooling air passage), and an opening 1 formed in the front plate 11 in a substantially square shape
1a is integrally formed with a shroud plate 12, and the radiator 7 is fitted in the space surrounded by the side plate 9, the bottom plate 10 and the front plate 11, and the cooling fan 13 is attached to the shroud plate 12. It is adapted to be mounted in a circular fan mounting hole 12a to be opened. Here, in the present embodiment, the radiator 7 is mounted in a posture in which the radiator 7 faces sideways with respect to the upper revolving structure 3, that is, the rotation shaft (not shown) of the fan 13 faces in the left-right direction. Front panel 11 when equipped
Will be located to the left and right, not to the front,
In the present embodiment, the radiator 7 itself is described as a reference, and the following description is also based on this unless otherwise specified.

The front plate 11 has a left side edge (a rear side edge on the basis of the upper swing body 3) in FIG. 3 which is inclined so as to follow the shape of the rear side edge of the engine room 6.
The upper left corner of the opening 11a is opened with the tapered locking side 11b left. On the other hand, a notch 9a for engaging with the locking side portion 11b is formed at the upper edge portion of the side plate 9 assembled on that side, whereby the upper left corner of the front plate 11 has a notch 9a. Although consideration is given to avoiding a decrease in strength due to a narrow plate width, the side plate 9 is locked by assembling the side plate 9 with the notch 9a engaged with the locking side portion 11b. Side 11b
It is designed to be installed without being disturbed by. Incidentally, in this embodiment, the side plate 9 projects to the shroud plate 12 side to reinforce the side of the shroud.

Next, the radiator 7 is a cooling body 7.
a, a lower tank 7b, and an upper tank 7c are used, but a piping port (the upper side piping port has the same configuration as the lower side piping port is not shown since it is directed from both tanks 7b and 7c toward the front plate 11 side). ) 14 protrudes, and the pipe 1
5, the radiator 7 is attached so that the pipe port 14 penetrates the through hole 11c formed in the front plate 11. Here, the radiator 7 is
The lower part is elastically positioned and attached to the bottom plate 10, and the upper part is integrally attached to the front plate 11. The mounting structure is as follows. That is, the positioning pin 16 is provided on the lower surface of the lower tank 7 b so as to project, and the positioning pin 16 is elastic by being inserted into the insertion hole 17 a of the cylindrical vibration-proof rubber 17 provided on the bottom plate 10. Although it is designed to be positioned and attached, the vibration-proof rubber 17
Is installed in the bottom plate 10 so as to penetrate through the through-hole 10a formed from below, and the bottom plate 10 is attached to the mounting seat 18 integrally provided on the frame of the upper swing body 3 with the bolts 19. The anti-vibration rubber 17 attached through the above is incorporated in the bottom plate 10 in a state of being retained and supported by the bottom plate 10. On the other hand, a mounting side 20 is integrally projectingly provided on the upper tank 7c, and a bolt 21 penetrating from the mounting side 20 to the front plate 11 is tightened and fixed by using a double nut 22. Incidentally, 23
Is a collar interposed between the mounting side 20 and the front plate 11, and 24 is a fan guard. Further, the work light 25 provided on the boom 4 of the present embodiment is configured to swing and change between the working unit irradiation posture and the storage posture about the support shaft 26 as a fulcrum, and the fulcrum for maintaining each posture. An ammunition 27 is provided to cross over.

In the embodiment of the present invention constructed as described above, when the radiator 7 is attached to the upper swing body 3,
First, the radiator 7 is assembled into the bracket 8 to form an assembly, and this assembly is mounted on the mounting seat 18. In assembly of the assembly, the vibration-proof rubber 17 is attached to the bottom plate 1.
In a state in which the radiator 7 is not mounted on the front plate 11, the radiator 7 is moved forward so that the pipe port 14 penetrates the through hole 11c formed in the front plate 11, and fitted into the bracket 8, and the bolt 21 is mounted on the mounting side 20. After being penetrated through the front plate 11 and temporarily assembled, the anti-vibration rubber 17 is inserted into the through hole 10a formed in the bottom plate 10 by inserting the positioning pin 16 into the through hole 17a formed in the anti-vibration rubber 17. It suffices to penetrate the vibration-proof rubber 17, and the vibration-proof rubber 17 is held in a state in which the collar portion 17b, which slightly bulges on the outer periphery thereof, is locked to the upper surface of the bottom plate 10 so as to be temporarily removed. The radiator 7 is installed in the assembly,
The assembly bottom plate 10 is fixed to the mounting seat 18 with bolts 19.

As described above, in the embodiment of the present invention, the bracket 8 has the pipe port 1 protruding in the front-rear direction.
4 will be assembled so as to penetrate through the front plate 11, but in this case, the vibration-proof rubber 17 for positioning and holding the lower portion of the radiator 7 in a vibration-proof manner is such that the pipe port 14 is attached to the front plate 11. After being penetrated, it is attached through the through hole 10a, and as a result, like the conventional one in which the vibration-proof rubber 34 is previously attached to the bottom plate,
The through hole 31a through which the piping port 32 penetrates does not need to be a long hole long enough for the positioning pin 33 to pass over the anti-vibration rubber 34, and the diameter can be made small enough to allow the piping port 14 to gradually penetrate. As a result, the leakage of the cooling air can be reduced, and the cooling efficiency can be improved. Moreover, since the anti-vibration rubber 17 is retrofitted from the bottom surface of the bottom plate 10, it is easy to perform without being obstructed by the piping or shroud bottom plate as in the case of retrofitting the long hole formed in the conventional front plate. Can be done.

Further, in this structure, the through hole 11c through which the piping port 14 penetrates does not need to be a long hole as in the conventional structure. As a result, the front plate 11 has a through hole 11c.
It is not necessary to secure a space for making the long hole, and as a result, the upper surface position of the lower tank 7b can be made substantially the same position as the shroud bottom plate, which contributes to the improvement of the cooling efficiency of the radiator 7 and the weight reduction. You can do it.

[0012]

In summary, since the present invention is constructed as described above, the radiator has a vibration proof rubber projecting from the lower surface of the radiator after the pipe port is penetrated through the through hole formed in the front plate. It is sufficient to penetrate the bracket bottom plate from the lower side while penetrating the positioning pin, and then detachably fix the bracket bottom plate to the mounting seat. Will be done. As a result, the through hole for the piping port,
There is no need to make a long hole like the conventional one that is attached to the bottom plate with the anti-vibration rubber fixed in advance, and it is only necessary to have a small diameter so that the piping port will gradually penetrate, and the leakage of cooling air The cooling efficiency can be reduced to improve the cooling efficiency, and the radiator can be made lighter and more compact.

[Brief description of drawings]

FIG. 1 is a side view of a hydraulic excavator.

FIG. 2 is an enlarged vertical cross-sectional side view of a main part of the bracket with a radiator attached.

FIG. 3 is a rear view of the bracket.

FIG. 4 is a side view of the bracket.

FIG. 5 is a horizontal sectional view of the bracket.

FIG. 6 is a front view of a side plate.

FIG. 7 is a side view showing a state in which one side plate is omitted.

FIG. 8 is a side view of a modified work light.

FIG. 9 is an enlarged vertical cross-sectional side view of a main part showing a conventional example.

[Explanation of symbols]

 1 Hydraulic excavator 7 Radiator 9 Side plate 10 Bottom plate 11 Front plate 12 Shroud plate 13 Fan 14 Piping port 15 Piping 16 Positioning pin 17 Anti-vibration rubber 18 Mounting seat

Claims (2)

[Claims] 1. A radiator is internally fitted to a bracket integrally formed with a shroud for incorporating a fan,
In a traveling vehicle in which a pipe port projecting in the front-rear direction from the radiator penetrates a through hole provided in a front plate provided on the upper side of the cooling air passage of the bracket, the radiator has a positioning pin projecting from a lower surface of the radiator. When the vibration-proof rubber is inserted into the through hole of the vibration-proof rubber and is positioned for vibration-proof positioning, the bracket bottom plate is provided with at least a through-hole having a size through which the vibration-proof rubber penetrates. On the other hand, the anti-vibration rubber that is installed through the through hole is retained and supported by a mounting seat that removably fastens the bracket bottom plate, and is attached later than the radiator. Mounting structure for anti-vibration rubber for radiators on traveling vehicles. 2. The bracket according to claim 1, wherein the bracket is provided with side plates and a bottom plate for surrounding left and right side surfaces and a bottom surface of the radiator, a front plate provided on the upper side of the cooling air passage, and an opening formed in the front plate. A shroud plate for incorporating a fan, and a locking side portion is left at a corner portion of an opening formed in the front plate, and the locking side portion is formed on a side plate. A structure for mounting a vibration isolating rubber for a radiator in a working vehicle, which is characterized in that the mounting structure is adapted to be fitted into and attached to a vehicle.