KR100651103B1 - Construction machinery - Google Patents

Abstract

An object of the present invention is to make it possible to install a conduction regulation device that regulates conduction of a cap at a low cost, and to easily attach and remove the cap.

A conduction limiting device 42 is provided between the left rear attachment base 11 of the base frame member 8 constituting the cap 7 and the cap support 6 of the swing frame 5, and the reinforcing device 32 is provided. The conduction restricting device 47 is installed between the connecting member 35 and the cap support 6 of the swing frame 5. As a result, even when a large load acts on the cap 7, it is possible to restrict the cap 7 from falling and prevent damage to the dustproof mount 41. In addition, the conduction control devices 42 and 47 pass the stopper bolts 44 and 49 through the through holes 43 and 48 from the lower side of the turning frame 5, and are simply attached to the cap 7 side. Can be assembled.

Conduction control device, base frame member, cap, swing frame, connecting member, reinforcement device

Description

Construction machinery {CONSTRUCTION MACHINERY}

1 is a front view showing a hydraulic shovel according to an embodiment of the present invention.

2 is an enlarged plan view of the revolving frame as a single member;

3 is an enlarged front view of the cap of FIG. 1;

4 is a rear view of the cap shown in FIG.

Fig. 5 is an enlarged cross sectional view showing the configuration of the cap from the direction of arrow V-V in Fig. 3 in a state where the door is omitted;

Fig. 6 is an external perspective view showing the base frame member, the cap box, the bottom plate, and the reinforcement device in an enlarged manner from the right front side in a state of being mounted on the cap support portion.

7 is an enlarged plan view of the base frame.

Fig. 8 is a perspective view of an enlarged main part showing a left rear attachment base and the like.

9 is a perspective view of an enlarged main part showing a state where the reinforcing device is attached to the bottom plate and the center pillar;

Fig. 10 is an exploded perspective view of the main part enlarged in a state where a part of the bottom plate, the center pillar, the bottom plate reinforcing member, the connecting member, and the conduction control device is disassembled;

11 is an enlarged perspective view of the connecting member in a single member.

Fig. 12 is a left side view of a portion of the connecting member viewed from the arrow XII-XII in Fig. 11;

Fig. 13 is a sectional view of an enlarged view of an essential part of the state in which the conduction restricting device is provided between the cap support and the base frame member as seen from the arrow XIII-XIII in Fig. 5;

Fig. 14 is a sectional view of an enlarged view of a main part of the state in which the conduction restricting device is provided between the cap support and the connecting member as seen from the arrow XIV-XIV direction in Fig. 5;

Fig. 15 is a sectional view of an enlarged view of a main part of the conduction control device according to the first modification of the present invention as viewed from the same position as in Fig. 13;

Fig. 16 is a sectional view of an enlarged view of a main portion of the conduction control device according to a second modification of the present invention as viewed from the same position as in Fig. 13;

<Explanation of symbols for main parts of the drawings>

1: hydraulic shovel (construction machinery)

5: turning frame

6: cap support

6A: Medium transverse beam

6B: Rear Side Beam

6C: Bell Beam

6D: Front Frame

6E, 6F: Mounting Hole

7: cap

8: base frame member

9: left front attachment base

10: Right front attachment base

11: left rear attachment base

12: Right rear attachment base

13: left connection frame

14: right connection frame

15: front access frame

16: rear access frame

17: cap box

17A: Front side

17B: rear side

17C: left side

17D: Right side part

17E: Ceiling surface part

18: left front pillar

19: Right front pillar

20: left rear pillar

21: Right rear pillar

24: Center Filler

28: hatch

30: bottom plate

31: Cab

32: reinforcement device

33: bottom plate reinforcement member

35: connecting member

38: driver's seat

41: Dust Mount

42, 47, 61, 71: conduction regulator

43, 48: through hole

44, 49, 62, 72: stopper bolt

44A, 49A, 72A: Head part (stopper)

45, 50 washer (stopper)

46, 51: color

G: buffer gap

Document 1 JP 2002-339406 A

The present invention relates, for example, to construction machinery such as hydraulic shovels, wheel loaders, and more particularly to construction machinery with caps on a frame.

Generally, the hydraulic shovel as a construction machine is comprised of the lower traveling body which can run itself, the upper swing body mounted on the lower traveling body so that rotation is possible, and the work device installed so that it could float in the front side of the upper swing body. Consists of.

Moreover, the cap is located on the left front side on the swing frame which comprises the upper swing body. The cap of the hydraulic shovel has a cap box constituting a hollow structure, a bottom plate which closes the lower side of the cap box, and a driver's seat, various levers, and the like, on which the driver sits. The cap is supported by the swing frame via a plurality of vibration mounts with respect to the swing frame. Thereby, the vibration transmitted to a cap is alleviated by the action of each dustproof mount, and the riding comfort is favorable.

Further, each of the dust-proof mounts for supporting the cap on the swinging frame is, for example, by a main body portion having a built-in damping force generating means, and an attachment screw having a lower side connected to the damping force generating means in the main body portion and an upper side projecting from the main body portion. It is roughly comprised, The said attachment screw is connected to the damping-force generating means in the said main-body part, and is displaceably attached via the rubber member which is elastic with respect to the said main-body part.

In the dustproof mount, the main body is attached to the swing frame, and an attachment screw is attached to the lower side of the cap. In this way, the vibration isolator damps the vibration transmitted to the cab by being damped by the damping force generating means by displacing the attachment screw with respect to the main body portion from the swing frame to the cab from the swing frame during travel and operation.

Here, the hydraulic shovel is likely to fall when, for example, the work is carried out in an unreasonable position on the inclined slope, a large load acts on the side of the cap when the hydraulic shovel is inverted. When a large load acts on the cap, the cap is greatly displaced so that the cap is lifted up, so that the damping force generating means, the rubber member, or the like of each dustproof mount may be damaged. Therefore, the hydraulic shovel is provided with a reinforcing member for regulating the fall of the cap between the swing frame and the cap so that the dustproof mount does not greatly displace over the commercial stroke even if the falling situation occurs.

So, the structure of the reinforcement member provided between the revolving frame and the cap will be described. The reinforcing member attaches a reinforcing member formed in a substantially inverted C shape in cross section to a connecting member provided in the lower side of the cap box to attach the bottom plate, and pivots at the bottom of the bottom through an opening in which the lower side of the reinforcing member is provided in the bottom plate. It is set as the structure arrange | positioned at the position coupleable to a frame (for example, refer document 1).

By the way, in the thing by the above-mentioned prior art, in order to provide the reinforcement member which restricts displacement of a cap, it is necessary to form the opening which lets a reinforcement member pass through the bottom plate of a cap. In addition, it is necessary to process the reinforcing member into a substantially inverted c-shaped cross section. For this reason, since many processing operations are required in order to install a reinforcement member, there exists a problem that the workability falls and a manufacturing cost rises.

In addition, since the reinforcing member of the prior art is disposed at the rear end of the cap, when the cap is removed for repair or maintenance, a bolt such as a spanner is attached to the bolt that attaches the reinforcing member at the rear end of the cap, which is difficult to work with. It must be removed by use, resulting in a problem of poor workability.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems of the prior art, and an object of the present invention is to provide a conduction regulating device that regulates displacement of a cap at a low cost in a simple operation, thereby improving workability and reducing manufacturing cost. To provide one construction machine.

Further, another object of the present invention is to provide a construction machine capable of removing the conduction control device from the outside of the cap when removing the cap from the frame, thereby improving workability such as repair work and maintenance work. There is.

The construction machine includes a frame constituting a support structure, a cap disposed on the frame and partitioning a cab therein and having a hatch on one side in a left and right direction, and installed between the frame and the cap to cushion the cap with respect to the frame. It is equipped with the dustproof mount which supports in a state.

And, in order to solve the above problems, the cap comprises a base frame made of a frame structure, and a hollow cap box provided on the base frame, between the rear edge position of the base frame member and the frame The antivibration mount is provided, and the conduction control device which restricts the displacement of the cap greatly beyond the commercial stroke of the antivibration mount is provided.

The said conduction control apparatus is set as the structure installed in the back corner position of the said one side where the hatch of the said cap is located.

The base frame member is constituted by four attachment bases disposed at corner positions of left front, right front, left rear, and right rear, and four connection frames connecting the respective attachment bases. It is set as the structure provided between the attachment base arrange | positioned at the said one side rear edge and the said frame among the four attachment bases which comprise the said base frame member.

The conduction regulating device is a vertically located through hole provided in the frame at the lower side of the cap, the upper side is fixed to the rear corner position of the base frame member, the lower side extending through the through hole; It is provided by the stopper provided in the lower end side of the said bolt, and the movement which raises the said cap to contact and regulate the periphery of the said through-hole.

The stopper and the frame are spaced apart from each other between the stopper and the frame around the through hole, and the stopper and the frame are spaced apart from each other. In this case, the gap between the stopper and the frame is provided.

The construction machine includes a frame constituting a support structure, a cap disposed on the frame and partitioning a cab therein and having a hatch on one side in a left and right direction, and installed between the frame and the cap to cushion the cap with respect to the frame. It is equipped with the dustproof mount which supports in a state.

And, in order to solve the above problems, the cap is a base frame member consisting of a frame structure, a hollow cap box having a center pillar installed on the base frame member and extending in the vertical direction on one side of the left and right directions; And a bottom plate installed on the base frame member to close the lower side of the cap box, and a reinforcement device installed between the bottom plate and the center pillar of the cap box to reinforce the center pillar from the inside. Between the reinforcement apparatus and the said frame, it is set as the structure which provides the fall control apparatus which restricts the displacement of the said cap largely beyond the commercial stroke of the said antivibration mount.

The reinforcement device is constituted by a bottom plate reinforcement member which extends in the left and right direction on the bottom plate, and a connection member which connects one end of the bottom plate reinforcement member to the center pillar of the cap box. It is set as the structure provided between the connection member of the said reinforcement apparatus, and the said frame.

The conduction limiting device is located in the lower side of the cap, the vertical through-hole provided in the frame, the upper side is fixed to the reinforcing device, the lower side extends through the through hole and the lower end side of the bolt The stopper is provided in the stopper which is attached to the said perforation and regulates the movement which raises the said cap.

In the state where the cap is displaced in the range of the commercial stroke of the dustproof mount between the stopper and the frame around the through hole constituting the conduction restricting device, the stopper and the frame may be spaced apart from the range of the commercial stroke. In this case, the gap between the stopper and the frame is provided.

EMBODIMENT OF THE INVENTION Hereinafter, as a construction machine which concerns on embodiment of this invention, a crawler type hydraulic shovel is taken as an example and it demonstrates in detail according to FIGS.

In Fig. 1, reference numeral 1 denotes a crawler type hydraulic shovel as a construction machine, and the hydraulic shovel 1 is a lower traveling body 2 which can run on its own, and an upper part which is pivotally mounted on the lower traveling body 2. It is comprised by the revolving body 3 and the working apparatus 4 which is installed so that the front side of the upper revolving body 3 can be moved, and performs excavation work etc. of earth and sand.

In addition, the upper swing body 3 includes a swing frame 5 to be described later that is pivotally mounted on the lower travel body 2, a cap 7 to be described later mounted on the left front side of the swing frame 5, and And a dustproof mount 41 to support the cap 7 in a buffered state with respect to the swing frame 5, and a conduction restricting device 42 and 47 for suppressing large displacement of the cap 7. ).

Reference numeral 5 denotes a swing frame formed as a support structure that forms the base of the upper swing body 3, and the swing frame 5 includes a thick bottom plate 5A extending and extending in the front and rear directions as shown in FIG. And vertical plates extending vertically on the bottom plate 5A in a forward and backward direction, and having left and right end plates 5B and 5B to which a working device 4 is attached on the front side, and the bottom plate 5A, respectively. A plurality of protruding beams 5C protruding in the left and right direction from the end plate 5B, the left and right side frames 5D and 5D extending in the front and rear directions at the distal ends of the protruding beams 5C, and the left front side It is comprised substantially by the cap support part 6 mentioned later provided in the side.

Reference numeral 6 denotes a cap support portion that forms a part of the swing frame 5 and is provided on the left front side of the swing frame 5, and the cap support portion 6 is positioned at an intermediate portion in the front and rear directions and extends in the left and right directions. Both ends are disposed at intervals on the rear side of the intermediate transverse beam 6A fixed to the bottom plate 5A, the left end plate 5B, and the left side frame 5D, and the intermediate transverse beam 6A, and both ends are bottomed. A rear transverse beam 6B fixedly attached to the plate 5A, the left end plate 5B, and the left side frame 5D, and extends forwardly in parallel with the left side frame 5D from the right end of the intermediate transverse beam 6A. It consists of the longitudinal beam 6C and the front frame 6D which extends to the left-right direction at intervals at the front side of the said intermediate transverse beam 6A, and connected the said left side frame 5D and the longitudinal beam 6C. It is.

Here, the rear transverse beam 6B constituting the cap support part 6 is formed in a substantially L-shaped cross section by the upper plate 6B1 and the front plate 6B2, and the dustproof mount (to be described later) Two mount mounting holes 6E for attaching the main body portion 41A of 41 are spaced apart in the left and right directions. Moreover, the front frame 6D of the cap support part 6 is formed in substantially L shape in cross section by the upper board 6D1 and the front board 6D2, The main board of the antivibration mount 41 is attached to the upper board 6D1. Two mounting attachment holes 6F for attaching the portion 41A are spaced apart in the left and right directions.

In addition, the upper plate 6B1 of the rear transverse beam 6B is provided with a through hole 43 of the conduction restricting device 42 which is located at the front side of the mounting hole 6E on the left side and described later. In addition, the middle transverse beam 6A is formed in an L-shaped cross section by the upper plate 6A1 and the front plate 6A2, and penetrated by the conduction regulating device 47, which will be described later, located on the left side of the upper plate 6A1. The hole 48 is provided.

Next, reference numeral 7 denotes a cap of the hydraulic shovel 1 mounted on the cap support 6 of the swing frame 5, and the cap 7 is a cap support 6 via a dustproof mount 41 described later. It is provided in the upper part, and the cab 31 mentioned later which the driver boards is partitioned. The cap 7 is formed by the base frame member 8, the cap box 17, the bottom plate 30, the reinforcing device 32, the driver's seat 38, and the like described later with reference to FIGS. It is approximately composed.

8 is a base frame member provided below the cap 7, and the base frame member 8 forms the cap 7 together with the cap box 17, the bottom plate 30, etc. which will be described later. 5 and 6, the base frame member 8 includes a left front attachment base 9, a right front attachment base 10, a left rear attachment base 11, and a right rear attachment base (described later). 12), the left connection frame 13, the right connection frame 14, the front connection frame 15, and the rear connection frame 16 are formed as rectangular frame structures that are long in the front and rear directions.

In addition, the base frame member 8 includes a left front pillar 18, a right front pillar 19, a left rear pillar 20, a right rear pillar 21, and a center pillar forming a frame of the cap box 17. (24) and the like, and when the cap 7 is mounted on the cap support part 6 of the swing frame 5, it is an important component in strength for attaching the dustproof mount 41 described later. Accordingly, the base frame member 8 has a sufficiently high strength so as not to greatly deform the cap box 17 even when a large load is applied to the cap 7 by assuming, for example, the fall of the hydraulic shovel 1. Formed.

So, the structure of the base frame member 8 provided as a part of the said cap 7 in the lower part of the cap 7 is demonstrated in detail.

Reference numeral 9 denotes a left front attachment base disposed at a left front corner position of the base frame member 8, the left front attachment base 9 being united by casting means or forging means using a material such as cast steel, for example. It is molded as a cast part or forging part which consists of a block body. Then, the left front attachment base 9 has a substrate 9A formed in a substantially triangular shape as shown in Fig. 7, a support protrusion 9B protruding upward from the substrate 9A, and the substrate 9A. It is roughly comprised by 9 C of mounting holes provided in the substantially center position of (). Moreover, the mounting screw 41B of the antivibration mount 41 mentioned later is inserted in 9C of mount mounting holes of the left front attachment base 9.

Reference numeral 10 denotes a right front attachment base disposed at the right front corner position of the base frame member 8, which is substantially the same as the left front attachment base 9, for example in a single block body. It is formed as a cast part or a forging part which consists of. The right front attachment base 10 is located at a right end of the substrate 10A formed in a substantially triangular shape, a support protrusion 10B protruding upward from the substrate 10A, and the substrate 10A. Mount attachment hole 10C extending from the support protrusion 10B to the rear side and at approximately the center position of the substrate 10A, and the mounting screw 41B of the dustproof mount 41 inserted therethrough ( It is comprised roughly by 10D).

Reference numeral 11 denotes a left rear attachment base disposed at a left rear corner position of the base frame member 8, which is substantially the same as the left front attachment base 9, for example in a single block body. It is formed as a cast part or a forging part which consists of. Thereby, the left rear attachment base 11 has sufficient strength to connect the cap 7 to the dustproof mount 41 together with the other attachment bases 9, 10, 12.

As shown in Fig. 8, the left rear attachment base 11 is bent from the left side to the right side, and is inclined to the rear side to extend the rib 11A, and the frame formed at the front end at the left end of the rib 11A. From the attachment portion 11B, the frame attachment portion 11C formed on the right end of the rib 11A on the right side, the front projection 11D protruding forward from the rib 11A, and the rib 11A. In the rear projection 11E which protruded downward, the stopper attachment hole 11F provided in the substantially center position of the said front projection 11D, and the mount attachment hole 11G provided in the substantially center position of the said rear projection 11E. It is roughly composed by.

Here, the stopper attachment hole 11F provided in the front protrusion 11D of the left rear attachment base 11 is formed as a screw hole engraved with a thread, for example, and the conduction restrictor described later in the stopper attachment hole 11F is described later. The stopper bolt 44 of 42 is screwed from the lower side. In addition, the mounting screw 41B of the antivibration mount 41 is inserted into the mounting attachment hole 11G of the left rear attachment base 11, and at this time, the mounting attachment hole 11G is left rearward from the outside of the cab 31. Since it is arrange | positioned at the corner position of, the dustproof mount 41 can be attached by simple operation | work from the exterior of the cap 7.

Reference numeral 12 denotes a right rear attachment base disposed at a right rear corner position of the base frame member 8, the right rear attachment base 12 being made of, for example, a single block body almost the same as the left front attachment base 9; It is formed as a cast part or a forged part. As shown in Fig. 7, the right rear attachment base 12 has a rib 12A extending inclined to the rear side while bending from the right side to the left side and a frame formed in front of the right end of the rib 12A. 12B of attachment parts, the frame attachment part 12C formed in the left end part of the said rib 12A, the projection part 12D which protruded to the back side from the said rib 12A, and the said projection part 12D It is comprised substantially by the mounting hole 12E provided in the right position.

In addition, the mount attachment hole 12E of the right rear attachment base 12 is disposed at the corner of the right rear side from the outside of the cab 31 similarly to the mount attachment hole 11G of the left rear attachment base 11 described above. Therefore, the dustproof mount 41 can be attached in a simple operation from the outside of the cap 7.

Reference numeral 13 denotes a left connection frame provided on the left side of the base frame member 8 and extending in the front and rear directions. The left connection frame 13 is, for example, a plate-shaped frame 13A for connecting between the left front attachment base 9 and the left rear attachment base 11, and the center pillar 24 and the left rear attachment base described later. It is comprised substantially by the cylindrical frame 13B provided between (11).

Here, the plate-shaped frame 13A of the left connecting frame 13 is formed using, for example, a bending plate having a substantially J-shaped, L-shaped cross section, and the front end thereof is formed of the left front attachment base 9. The lower surface of the substrate 9A is fixedly attached by welding means, and the rear end is fixedly attached to the lower surface of the rib 11A of the left rear attachment base 11.

In addition, the cylindrical frame 13B of the left connection frame 13 is formed using the cylindrical pipe member of which the cross section was angled, for example. As a result, the cylindrical frame 13B can increase the strength between the left rear attachment base 11, the plate-shaped frame 13A, and the center pillar 24. The front side of the cylindrical frame 13B is bolted to the plate-shaped frame 13A or the like, and the rear end is fixedly attached to the frame attaching portion 11B of the left rear attaching base 11 using welding means.

Reference numeral 14 denotes a right connecting frame positioned on the right side of the base frame member 8 and extending in the front and rear directions, and the right connecting frame 14 uses, for example, a tubular pipe member having an angled cross section. Formed. And the right side connecting frame 14 has the front end fixedly attached to the frame attachment part 10C of the right front attachment base 10 using a welding means, and the rear end is attached to the frame attachment part of the right rear attachment base 12 ( 12B) is fixedly attached.

Reference numeral 15 denotes a front connecting frame positioned on the front side of the base frame member 8 and extending in the left and right directions, wherein the front connecting frame 15 includes a plurality of panel members 15A, 15B, etc., which are bent into a desired shape. Each left part is fixedly attached to the left front attachment base 9 by means of welding means, and the right part is fixedly attached to the right front attachment base 10.

Reference numeral 16 denotes a rear connection frame which is located on the rear side of the base frame member 8 and extends in the left and right direction, and the rear connection frame 16 is formed by using, for example, a tubular pipe member having an angled cross section. It is. The rear connecting frame 16 has its left end fixedly attached to the frame attaching part 11C of the left rear attaching base 11 using welding means, and the right end thereof is attached to the frame attaching part of the right rear attaching base 12 ( 12C) is fixedly attached.

Reference numeral 17 denotes a cap box provided on the base frame member 8, and the cap box 17 constitutes an outer shape of the cap 7. And the cap box 17 is the front surface part 17A supported by the fillers 18-24 mentioned later extended upward from the base frame member 8, as shown to FIG. 3, FIG. 4, FIG. The four surfaces of the rear surface portion 17B, the left surface portion 17C, and the right surface portion 17D and the ceiling surface portion 17E are formed into a box-shaped member. In addition, a front window (not shown) is attached to the front surface portion 17A, and the door 29 is provided at the hatch 28, which will be described later, on the left surface portion 17C so that the door 29 can be opened and closed.

The cap box 17 covers the circumference of the driver's seat 38, which will be described later, and includes a left front pillar 18, a right front pillar 19, a left rear pillar 20, a right rear pillar 21, and a left loop. A pillar 22, a right loop pillar 23, a center pillar 24, a hatch 28, a rear panel 25, a side panel 26, a roof panel 27, and the like are substantially constituted. In addition, lower ends of the left front pillar 18, the right front pillar 19, the left rear pillar 20, and the right rear pillar 21 constituting the cap box 17 are each attached base of the base frame member 8. It is fixed to 9, 10, 11, 12 using welding means.

So, the structure of the cap box 17 provided as a part of the cap 7 is demonstrated in detail.

Reference numeral 18 denotes a left front pillar extending vertically from the left front portion of the cap box 17, wherein the left front pillar 18 is formed between the front surface portion 17A and the left surface portion 17C of the cap box 17. It forms a ridge. The left front pillar 18 is made of, for example, a pipe member, and its lower end portion is fixedly attached to the left front attachment base 9 of the base frame member 8 using welding means or the like.

Reference numeral 19 denotes a right front pillar extending vertically from the right front portion of the cap box 17, wherein the right front pillar 19 is formed between the front surface portion 17A and the right surface portion 17D of the cap box 17. It forms a ridge. In addition, the right front pillar 19 is made of, for example, a pipe member almost similarly to the left front pillar 18, and its lower end is welded to the right front attachment base 10 of the base frame member 8.

In the meantime, reference numeral 20 denotes a left rear pillar extending vertically from the left rear portion of the cap box 17, and the left rear pillar 20 is the rear surface portion 17B and the left surface portion 17C of the cap box 17. Forms a ridge between. In addition, the left rear pillar 20 is made of, for example, a pipe member almost similarly to the left front pillar 18, and its lower end is welded to the left rear attachment base 11 of the base frame member 8.

Reference numeral 21 is a right rear pillar extending vertically from the right rear portion of the cap box 17, and the right rear pillar 21 is formed between the rear surface portion 17B and the right surface portion 17D of the cap box 17. It forms a ridge. The right rear pillar 21 is made of, for example, a pipe member almost similarly to the left front pillar 18, and its lower end is welded to the right rear attachment base 12 of the base frame member 8.

In addition, reference numeral 22 denotes a left loop pillar extending from the upper left side of the cap box 17 in the forward and backward directions, and the left loop pillar 22 is the left surface portion 17C and the ceiling surface portion 17E of the cap box 17. ) Form a ridge between. In addition, the left loop pillar 22 is made of a pipe member almost similarly to the left front pillar 18, and is welded to the upper part of the left front pillar 18 and the upper part of the left rear pillar 20.

Reference numeral 23 denotes a right loop filler extending forward and backward from the upper right side of the cap box 17, and the right loop pillar 23 is disposed between the right surface portion 17D and the ceiling surface portion 17E of the cap box 17. Of ridges. In addition, the right loop pillar 23 is made of a pipe member in substantially the same way as the left front pillar 18, and is welded to the upper part of the right front pillar 19 and the upper part of the right rear pillar 21. In addition, the left and right roof pillars 22 and 23 are connected by the some connection frame (not shown) extended in the left-right direction.

Reference numeral 24 denotes a center pillar provided on an intermediate portion in the front and rear directions of the left surface portion 17C constituting the cap box 17, and the center pillar 24 includes, for example, an inner press that is pressed into an approximately L shape. The outer panel member is fixedly attached by welding to form a hollow plate member. In addition, the center pillar 24 is located at a substantially middle portion in the front and rear directions of the left surface portion 17C, and extends in the vertical direction to the pillar portion 24A and the lower side of the pillar portion 24A. It is comprised by the side panel part 24B provided.

In addition, two connection member mounting holes 24C are provided in the inner panel member constituting the filler portion 24A at intervals above and below, respectively, at a lower position serving as a base portion as shown in FIG. Each said connection member attachment hole 24C is for attaching the connection member 35 of the reinforcement apparatus 32 mentioned later, For example, it forms by welding a nut.

And the lower end part is fixedly attached to the left connection frame 13 of the base frame member 8 of the pillar part 24A of the center pillar 24, and the upper end part is fixedly attached to the left loop pillar 22. As shown in FIG. Moreover, the lower end part is fixedly attached to the left connection frame 13 of the base frame member 8, and the rear end part is fixedly attached to the left rear pillar 20 of the side panel part 24B of the center pillar 24. As shown in FIG. Thereby, the center pillar 24 functions as a support pillar which suppresses the deformation of the cap 7, for example when the hydraulic shovel 1 falls or heavy objects collide.

Reference numeral 25 denotes a rear panel that forms the rear surface portion 17B of the cap box 17, reference numeral 26 denotes a side panel that forms the right side surface portion 17D of the cap box 17, and reference numeral 27 denotes a ceiling of the cap box 17. The roof panel which forms the surface part 17E is shown, respectively.

Reference numeral 28 denotes a hatch (see Figs. 4 and 6) located on the left side 17C of the cap box 17 and provided in front of the center pillar 24, and the hatch 28 is operated by the driver. When you go in and out. Moreover, the door 29 is attached to the hatch 28 so that opening and closing are possible.

Next, reference numeral 30 denotes a bottom plate that closes the lower side of the cap box 17, and the bottom plate 30 constitutes a part of the cap 7, and the front plate is formed so as to almost enter the base frame member 8. It is formed as a rectangular plate body long in the rear direction. The bottom plate 30 has four screw insertion holes (all not shown) at corner positions of left front, right front, left rear, and right rear, and attaching the dustproof mount 41 to each of the screw insertion holes. By inserting the screw 41B, it is fastened together with each attachment base 9, 10, 11, 12 which comprises the base frame member 8. As shown in FIG. Moreover, the circumference | surroundings of the bottom plate 30 are bolted to each connection frame 13-16 of the base frame member 8, etc.

Further, as shown in Fig. 10, a plurality of screw holes 30A are formed in the bottom plate 30 at front and rear positions substantially the same as the filler portion 24A of the center pillar 24. 30A fixes the bottom plate reinforcement member 33 mentioned later, and four rows (only two rows are shown) are provided before and after four, for example.

Here, reference numeral 31 denotes a cab partitioned within the cap 7, and the cab 31 is formed as a space surrounded by the base frame member 8, the cap box 17, the bottom plate 30, and the like. In the cab 31, the driver rides and operates the hydraulic shovel 1.

Reference numeral 32 is a reinforcement device which is located in the middle of the bottom plate 30 in the front and rear directions, and after the reinforcement device 32 increases the strength of the bottom plate 30, the outer side of the turning frame 5 in the left and right directions. The center pillar 24 constituting the left surface portion 17C of the cap box 17 located at is reinforced from the inner side (in the cab 31) to increase the rigidity of the cap 7. The reinforcing device 32 also serves as a support for supporting the driver's seat 38 together with the die sheet 36 described later. And the reinforcement apparatus 32 is comprised substantially by the bottom plate reinforcement member 33 and the connection member 35 mentioned later, is located in the middle of the front and back directions of the bottom plate 30, and extends in the left-right direction.

Reference numeral 33 is a bottom plate reinforcement member provided on the bottom plate 30, and the bottom plate reinforcement member 33 is substantially the same as the pillar portion 24A of the center pillar 24 as shown in Figs. It is located in the middle of the front and rear directions and extends in the left and right directions. In addition, the bottom plate reinforcing member 33 is provided over the front longitudinal surface portion 33A, the rear vertical surface portion 33B, and the upper portions of the respective longitudinal surface portions 33A and 33B, which are spaced apart in the front and rear directions and arranged in parallel. The upper horizontal surface portion 33C is formed as a rigid body having an inverted U-shaped cross-sectional shape. As a result, the bottom plate reinforcement member 33 has high rigidity against bending, torsion and the like.

In addition, each longitudinal surface portion 33A, 33B of the bottom plate reinforcing member 33 protrudes forward and backward from the bottom thereof and is provided with a flange portion 33D, and each of the flange portions 33D is shown in FIG. As described above, four bolt insertion holes 33E are formed in the vertical direction corresponding to the screw holes 30A of the bottom plate 30. Moreover, 33 A of screw holes are formed in 33 A of front longitudinal surface parts in the left side used as the center pillar 24 side. Moreover, 33 G of screw holes are formed in 33 C of upper horizontal surface parts.

The bottom plate reinforcing member 33 inserts the bolts 34 into the respective bolt insertion holes 33E provided in the flange portions 33D, and the bolts 34 are screw holes (for the bottom plate 30). By attaching the screw to 30A), it can be integrally attached to the bottom plate 30 as shown in FIG. In addition, in the state where the bottom plate reinforcing member 33 is provided on the bottom plate 30, the bottom plate reinforcing member 33 having rigidity suppresses warping and twisting of the bottom plate 30 to prevent the bottom plate ( 30) can increase the strength.

Reference numeral 35 denotes a connecting member provided between the bottom plate reinforcing member 33 and the center pillar 24 of the cap box 17, and the connecting member 35 includes a left end of the bottom plate reinforcing member 33 and a center pillar ( The lower part of the pillar part 24A forming 24 is connected with high intensity | strength. Moreover, the connection member 35 forms the strength member by the side of the cap 7 for attaching the stopper bolt 49 of the fall control apparatus 47 mentioned later.

As shown in Figs. 10 to 12, the connecting member 35 includes a reinforcing member attaching plate portion 35A extending in the lateral direction along the upper transverse surface portion 33C of the bottom plate reinforcing member 33, and the reinforcing member. A filler attaching plate portion 35B extending upward from the left end of the member attaching plate portion 35A along the filler portion 24A of the center pillar 24, and a front edge portion and the filler of the reinforcing member attaching plate portion 35A. A front side plate portion 35C fixedly attached over the front edge portion of the attachment plate portion 35B, and a rear end edge portion and the filler of the reinforcement portion attachment plate portion 35A so as to be parallel to the front side plate portion 35C. A rear plate portion 35D fixedly attached over the rear end edge portion of the attachment plate portion 35B, two end plate portions 35E extending downward while protruding forward from the front plate portion 35C, and By bottom plate part 35F extended laterally so that the lower end part of each end plate part 35E may be connected. It is approximately composed.

In addition, 35 A of bolt insertion holes corresponding to the screw hole 33G provided in 33 C of upper side surface parts of the bottom plate reinforcement member 33 are formed in 35 A of reinforcement member attachment plate parts. Moreover, the two bolt insertion holes 35H mentioned above are formed in the filler attachment plate part 35B by the two connection member attachment holes 24C provided in the center pillar 24. As shown in FIG. In addition, the front plate part 35C extends below the reinforcing member attachment plate part 35A, and is formed with a bolt insertion tube corresponding to the screw hole 33F provided in the front longitudinal surface part 33A of the bottom plate reinforcing member 33. The hole 35J is formed.

Here, each of the vertical plate portions 35E and the bottom plate portion 35F provided on the front side of the front plate portion 35C attach the stopper bolt 49 of the conduction restricting device 47 to be described later, and the bottom plate portion 35F. ), A nut 35K to which the stopper bolt 49 is screwed is welded.

Then, the connecting member 35 presses the reinforcing member attaching plate portion 35A to the upper horizontal surface portion 33C of the bottom plate reinforcing member 33, and the bolt 34 passed through the bolt insertion hole 33E in this state. To the screw hole 33G of the upper transverse surface portion 33C of the bottom plate reinforcing member 33. In addition, the bolt 34 passed through the bolt insertion hole 35G of the front plate part 35C is screwed into the screw hole 33F provided in the front longitudinal surface part 33A of the bottom plate reinforcing member 33. Thereby, the connecting member 35 can be firmly installed in the bottom plate reinforcement member 33.

On the other hand, the connection member 35 presses against the filler portion 24A of the center pillar 24, and in this state, the bolt 34 passed through the bolt insertion hole 35H is connected to the connection member mounting hole of the center pillar 24. Screw on (24C). Thereby, the connection member 35 can be provided with respect to the filler part 24A of the center pillar 24. As shown in FIG.

In this way, in the state where the bottom plate reinforcing member 33 and the center pillar 24 of the cap box 17 are connected by the connecting member 35, the reinforcing device 32 has a large load acting on the cap 7. Even if it is, even if it supports the fundamental part of the center pillar 24, the deformation | transformation of the said center pillar 24, ie the deformation of the cap box 17 can be suppressed small.

Reference numeral 36 denotes a die sheet (see FIGS. 5 and 6) located on the bottom plate 30 and located on the front side of the bottom plate reinforcing member 33, and the die sheet 36 is, for example, a bottom plate reinforcing member. It has almost the same shape as (33). As a result, the die sheet 36 can increase the strength of the bottom plate 30 similarly to the bottom plate reinforcement member 33.

Reference numeral 37 denotes a seat stand (shown in FIG. 5) disposed above the bottom plate reinforcing member 33 and the die sheet 36, and reference numeral 38 denotes a driver's seat (shown in FIG. 5) provided above the seat stand 37. Are shown respectively. In addition, the driver's seat 38 is seated by the driver, and the work lever 39 which operates the work device 4 etc. is provided in the left and right both sides of the driver's seat 38. In addition, on the front side of the driver's seat 38, a travel lever pedal 40 which is located in front of the bottom plate 30 to drive the lower traveling body 2 is provided.

Reference numeral 41 denotes, for example, four antivibration mounts (see FIGS. 5 and 6) installed between the cap support 6 and the cap 7 of the swing frame 5, wherein each of the antivibration mounts 41 is a cap 7. It is arrange | positioned at four places of the left front, right front, left rear, and right back of (), and supports the cap 7 in the state which damped the vibration with respect to the cap support part 6. Each of the dustproof mounts 41 includes, for example, a main body portion 41A in which viscous liquid is enclosed, and a mounting screw 41B protruding upward from the main body portion 41A, and the attachment screw ( 41B is integrally attached to the main body portion 41A via an annular rubber member.

In addition, the two dustproof mounts 41 located at the front left and the right front of the four vibration mounts 41 have a mounting hole (mounting hole whose main body portion 41A is formed in the front frame 6D of the cap support portion 6). The two dust-proof mounts 41 provided at 6F) and positioned at the rear left and rear right are attached to the mounting hole 6E whose main body portion 41A is formed in the rear transverse beam 6B of the cap support portion 6. It is.

Each of the dustproof mounts 41 attaches the main body portion 41A to the cap support portion 6 of the revolving frame 5, and attaches the mounting screw 41B protruding upwards to the screw insertion hole of the bottom plate 30, It is attached to the cap 7 by screwing from the lower side to the mount attachment hole 9C, 10D, 11G, 12E of each attachment base 9, 10, 11, 12 which forms the base frame member 8. As shown in FIG.

Next, two conduction restricting devices 42 and 47 which are provided between the turning frame 5 and the cap 7 and which prevent the cap 7 from being greatly displaced will be described. Here, for example, the hydraulic shovel 1 may run in an unreasonable position on a steep slope or the like, and may fall when the work is performed, and when it is turned over, a large load acts on the cap 7 from the left side. At this time, the dustproof mounts 41 connecting the swing frame 5 and the cap 7 may be damaged beyond the commercial stroke. Therefore, the conduction restricting devices 42 and 47 prevent the cap 7 from being greatly displaced beyond the commercial stroke of the dustproof mount 41, and prevent the situation where each dustproof mount 41 is damaged.

That is, reference numeral 42 denotes a rear fall conduction regulating device, which is located between the turning frame 5 and the cap 7 and is located at the left rear corner of the cap 7, and the fall restraining device 42 is the turning frame 5. The through hole 43, which will be described later, provided on the) side, and the stopper bolt 44, the washer 45, and the collar 46, which will be described later, provided on the cap 7 side.

Reference numeral 43 denotes a through hole (shown in Figs. 2 and 13) provided in the rear transverse beam 6B of the cap support portion 6 constituting the swing frame 5, and the through hole 43 represents the rear transverse beam 6B. It is formed as a circular hole penetrating the upper plate 6B1 in the vertical direction. In addition, the through hole 43 is formed with a diameter dimension larger than the collar 46 mentioned later and smaller than the washer 45. As shown in FIG.

Reference numeral 44 is a stopper bolt attached to the left rear attachment base 11 of the base frame member 8 constituting the cap 7, and the stopper bolt 44 has a head portion 44A constituting the stopper at the lower side. The upper side is screwed to the stopper attachment hole 11F of the left rear attachment base 11. In addition, the lower side of the stopper bolt 44 extends through the through hole 43, and the head portion 44A is disposed below the through hole 43.

Reference numeral 45 is a washer disposed on the head portion 44A of the stopper bolt 44 to constitute a stopper. The washer 45 has an outer diameter dimension larger than that of the through hole 43. Thereby, the washer 45 can contact the through-hole 43 (upper plate 6B1 of rear side beam 6B) from the lower side, when the left part of the cap 7 is going to displace largely upward. The washer 45 thus functions as a stopper with the head portion 44A of the stopper bolt 44.

Reference numeral 46 denotes a cylindrical collar provided on the outer circumferential side of the stopper bolt 44, and the collar 46 is interposed between the front protrusion 11D of the left rear attachment base 11 and the washer 45. It is. As a result, the collar 46 screws the stopper bolt 44 to the stopper attachment hole 11F of the left rear attachment base 11, and the top plate 6B1 and the washer 45 of the rear transverse beam 6B. It functions as a spacer which forms the clearance gap G between them.

Here, the buffer gap G formed between the top plate 6B1 and the washer 45 of the rear transverse beam 6B passes through the washer 45 with the washer 45 in a state where the vibration mount 41 is displaced in a commercial stroke range. A hole 43 (rear lateral beam 6B) is spaced apart so that the washer 45 comes into contact with the rear lateral beam 6B when it exceeds the range of a commercial stroke, that is, when the dustproof mount 41 may be damaged. It is set to the gap dimension.

The rear conduction restricting device 42 configured as described above contacts the washer 45 with the rear transverse beam 6B of the cap support 6 provided with the through hole 43 when the cap 7 is displaced to conduct to the right. Let's do it. As a result, the conduction restricting device 42 can restrict the conduction of the cap 7 by connecting the left portion of the cap 7 to the swing frame 5 by the stopper bolt 44.

Next, reference numeral 47 denotes a conduction regulating device of an intermediate part provided between the pivot frame 5 and the cap 7 and positioned at an intermediate part in the front and rear directions of the cap 7, wherein the conduction regulating device 47 is described above. Almost similar to the one rear side fall restricting device 42, the through hole 48 described later provided on the swing frame 5 side, and the stopper bolt 49 and washers 50 described later attached to the cap 7 side. It is roughly comprised by the collar 51.

Reference numeral 48 denotes a through hole (shown in Figs. 2 and 14) provided in the middle transverse beam 6A of the cap support portion 6 constituting the swing frame 5, and the through hole 48 represents the middle transverse beam 6A. It is formed as a circular hole penetrating the upper plate 6A1 in the vertical direction. In addition, the through hole 48 is formed with a diameter dimension larger than the collar 51 mentioned later and smaller than the washer 50. As shown in FIG.

Reference numeral 49 denotes a stopper bolt attached to the connecting member 35 of the reinforcing device 32 constituting the cap 7, and the stopper bolt 49, like the stopper bolt 44 described above, has a head portion constituting the stopper. The screw is attached to the nut 35K of the connecting member 35 with the 49A facing downward. In addition, the lower side of the stopper bolt 49 penetrates the through hole 48, and the head portion 49A is disposed below the through hole 43.

Reference numeral 50 denotes a washer disposed on the head 49A of the stopper bolt 49 to constitute a stopper. The washer 50 is similar to the washer 45 described above, and the head 49A of the stopper bolt 49 is used. Together with the stopper. That is, the washer 50 has its outer diameter larger than the inner diameter of the through hole 48, and when the left portion of the cap 7 is to be displaced upward, the through hole 43 (rear lateral beam 6B). Top plate 6B1] from the lower side. Therefore, the washer 50 functions as a stopper with the head portion 49A of the stopper bolt 49.

Reference numeral 51 is a cylindrical collar provided on the outer circumferential side of the stopper bolt 49, and the collar 51 is sandwiched between the upper plate 6A1 and the washer 50 of the intermediate transverse beam 6A. . Thereby, the collar 51 cushions between the top plate 6A1 and the washer 50 of the intermediate transverse beam 6A when the stopper bolt 49 is screwed onto the nut 35K of the connecting member 35. It functions as a spacer forming the gap G.

Like the rear conduction restricting device 42, the conduction regulating device 47 of the intermediate part configured as described above has a cap support part provided with a through hole 48 through the washer 50 when the cap 7 is displaced so as to conduct to the right. The middle transverse beam 6A of 6) is brought into contact. As a result, the conduction restricting device 47 can restrict the conduction of the cap 7 by connecting the left portion of the cap 7 to the swing frame 5 by the stopper bolt 49.

The hydraulic shovel 1 according to the present embodiment has the configuration as described above. Next, the operation of assembling the cap 7 and mounting the swing frame 5 will be described.

First, the base frame member 8 which forms the lower part of the cap 7 of the hydraulic shovel 1 is assembled, and the cap box 17 is assembled on this base frame member 8. In addition, when the bottom plate 30 is attached to the bottom of the base frame member 8 to form an outer portion of the cap 7, the driver's seat 38, the work lever 39, the travel lever and the bottom plate 30 are formed. Assemble the pedal 40 or the like.

Then, when the cap 7 is assembled and attached, the cap 7 is transported on the cap support 6 of the swing frame 5, and the attachment screws of the dustproof mounts 41 attached to the cap support 6 in advance are attached. The cap 7 is attached to the cap support part 6 in a dustproof state by fastening and attaching 41B to the attachment bases 9 to 12 of the base frame member 8.

Next, the operation | work in the case of assembling and attaching the conduction restricting devices 42 and 47 between the cap support part 6 and the cap 7 of the revolving frame 5 is demonstrated.

First, when assembling the conduction restricting device 42 located on the left rear side of the cap 7, the washer 45 and the collar 46 are attached to the stopper bolt 44, and the stopper bolt 44 is mounted. Is inserted through the through hole 43 provided in the rear transverse beam 6B of the cap support part 6 from below, and the said stopper bolt 44 is screwed into the stopper attachment hole 11F of the left rear attachment base 11, and it falls. The regulating device 42 can be assembled.

In addition, when assembling the fall control apparatus 47 located in the left middle part of the cap 7, the stopper bolt which attached the washer 50 and the collar 51 similarly to the left rear fall fall regulation apparatus 42 is carried out. A nut of the connecting member 35 constituting the stopper bolt 49 for the reinforcing device 32 by inserting the stopper bolt 49 into the through hole 48 provided in the intermediate transverse beam 6A of the cap support 6 from the lower side. By attaching the screw to 35K, the conduction limiting device 47 can be assembled.

In this manner, each of the conduction control devices 42 and 47 can be easily assembled by simply attaching the stopper bolts 44 and 49 to the cap 7 from the lower side of the turning frame 5. In addition, when the cap 7 is removed from the swing frame 5 for repair or maintenance work, the cap 7 can be easily removed by only loosening the stopper bolts 44 and 49. .

Next, the operation | movement at the time of carrying out operation by operating the hydraulic shovel 1 in which the cap 7 was mounted in the revolving frame 5 as above-mentioned is demonstrated.

First, the driver boards the cab 31 in the cab 7 and sits in the driver's seat 38. By operating the traveling lever pedal 40 in this state, the crawler of the lower traveling body 2 can be driven to advance or retract the hydraulic shovel 1. In addition, the driver seated on the driver's seat 38 can move the work device 4 by moving the work lever 39 on the left and right to perform excavation work and the like of the earth and sand.

Here, the hydraulic shovel 1 may be inverted when traveling or working in an unreasonable posture, and in case of being inverted, a large load is applied from the left side of the cap 7. At this time, the cap 7 is to be greatly displaced so as to fall to the right. However, the hydraulic shovel 1 according to the present embodiment is provided with conduction restricting devices 42 and 47 between the swing frame 5 and the cap 7. Therefore, when a large displacement is desired to the right side of the cap 7, the head portions 44A and 49A and the washers 45 and 50 of the stopper bolts 44 and 49 of the conduction restricting devices 42 and 47 are turned into a turning frame ( The displacement of the cap 7 can be stopped by contacting around the through holes 43 and 48 on the 5) side. Thereby, the situation which each dustproof mount 41 is damaged can be prevented.

Moreover, since the reinforcement apparatus 32 which raises the intensity | strength of the bottom plate 30, and supports and reinforces the center pillar 24 from the cab 31 side is provided in the cap 7, the fall of the hydraulic shovel 1 is carried out. Even if a large load acts on the left side of the cap 7 due to the above, the deformation of the cap box 17 can be suppressed small.

Thus, according to the present embodiment, the conduction restricting device 42 is provided between the left rear attachment base 11 of the base frame member 8 constituting the cap 7 and the cap support 6 of the swing frame 5. Is provided, and the conduction control device 47 is provided between the connecting member 35 of the reinforcement device 32 constituting the cap 7 and the cap support 6 of the swing frame 5. Thereby, for example, even when the hydraulic shovel 1 is turned over when traveling in an unreasonable position on a steep slope or the like, or when a large load acts on the cap 7, the fall control devices 42, 47 ) May restrict the cap 7 from being largely displaced and conducted over the commercial stroke of the dustproof mount 41, and may prevent damage of the dustproof mount 41 to improve durability and reliability.

In addition, the stopper bolt 44 of the conduction regulation apparatus 42 is attached to the left rear attachment base 11 of the base frame member 8 formed as a strength member for attaching the vibration mount 41, and the conduction regulation apparatus 47. ), The stopper bolt 49 is attached to the connecting member 35 of the reinforcing device 32 formed as a strength member for reinforcing the center pillar 24 or the like. Therefore, since the installation strength of the stopper bolts 44 and 49 with respect to the cap 7 can be raised, the durability, reliability, etc. of the conduction control devices 42 and 47 can be improved.

Here, when the hydraulic shovel 1 is inverted, since a large load depends on the weight of the hydraulic shovel 1 from the left side of the cap 7 on which the hatch 28 is located, the load is the left side of the cap 7. The cap 7 is to be inverted (displaced) to lift the part. Therefore, in the present embodiment, the conduction limiting devices 42 and 47 are disposed on the left side of the cap 7, so that the displacement of the cap 7 is dustproof even with a large load caused by the hydraulic shovel 1 falling. Since the mount 41 can be regulated within the range of the commercial stroke, the dustproof mount 41 can be reliably protected.

In addition, the connecting member 35 of the reinforcing device 32 in which the stopper bolt 49 of the conduction restricting device 47 of the intermediate part is installed is installed on the bottom plate 30 to form a die sheet of the driver's seat 38. The reinforcing member 33 is provided as a separate member. Thereby, when the hydraulic shovel 1 is small and only a small load acts on the cap 7 even when it is turned over, the connecting member 35 and the conduction restricting device 47 of the intermediate part can be omitted. Depending on the model, the conduction regulation capability of the cap 7 can be set most appropriately.

In addition, the conduction restricting devices 42 and 47 can be assembled in a simple operation by simply attaching the stopper bolts 44 and 49 to the cap 7 side through the through holes 43 and 48 from the lower side of the turning frame 5. Can be. In addition, when removing the cap 7 from the turning frame 5 to perform repair work or maintenance work, the cap 7 can be removed simply by loosening the stopper bolts 44 and 49. . As a result, the workability of the attaching and removing work of the cap 7 can be improved, and the manufacturing cost can be reduced.

On the other hand, since the clearance gap G is provided between the washers 45 and 50 which comprise the conduction control devices 42 and 47, and the through-holes 43 and 48 (cap support part 6), a dustproof mount ( When the cap 7 is displaced in the commercial stroke of 41, the washer 45 and 50 and the through holes 43 and 48 are separated from each other to function the dustproof mounts 41 so that the cap ( Vibration transmitted to 7) can be alleviated, and the riding comfort can be improved.

Moreover, since the commercially available bolts can be used for the stopper bolts 44 and 49 of the conduction control devices 42 and 47, the manufacturing cost of the conduction control devices 42 and 47 can be reduced.

In addition, in this embodiment, since two fall control devices 42 and 47 are provided between the revolving frame 5 and the cap 7, the gross weight is large and a large load acts on the cap 7 when the fall is conducted. Also in the hydraulic shovel 1 of the medium type or more, the large displacement (conduction) of the cap 7 can be reliably regulated, and the dustproof mount 41 can be protected to improve reliability and the like.

In the embodiment, for example, the rear conduction limiting device 42 is screwed into the left rear attachment base 11 by inserting the through hole 43 on the swing frame 5 side and the through hole 43. The stopper bolt 44 to be contacted with the washer 45 in contact with the top plate 6B1 of the rear transverse beam 6B to be the periphery of the through hole 43, and the upper part of the washer 45 and the rear transverse beam 6B. The case where the clearance gap with the board 6B1 was comprised by the collar 46 which sets it as the clearance gap G was illustrated.

However, the present invention is not limited to this and, for example, one side (upper side) of both the screw bolts 62 is connected to the nut 63 like the conduction control device 61 according to the first modification shown in FIG. By screwing it to the left rear attachment base 11 in the state of preventing its removal, and attaching the nuts 1 and 64 larger in diameter than the through holes 43 to the other side (lower side) of both screw bolts 62. The other nut 65 may be configured to fix the nut 64 having a large diameter at a position spaced apart from the upper plate 6B1 of the rear transverse beam 6B by the buffer gap G. This configuration is similarly applicable to the conduction control device 47 in the middle part.

In addition to the first modification described above, the head portion 72A of the stopper bolt 72 has a diameter larger than that of the through hole 43, as in the conduction regulation device 71 according to the second modification shown in FIG. The stepped portion 72B which is formed large and fixes the head portion 72A on the front end side of the stopper bolt 72 at a position spaced apart from the upper plate 6B1 of the rear transverse beam 6B by the buffer gap G. It is good also as a structure which installs. Therefore, in this case, the head portion 72A of the stopper bolt 72 constitutes the stopper. This configuration is similarly applicable to the conduction control device 47 in the intermediate portion.

In addition, in embodiment, the case where two conduction control devices 42 and 47 were provided between the turning frame 5 and the cap 7 was demonstrated as an example. However, the present invention is not limited to this. For example, in the case of the small hydraulic shovel 1 having a small total weight, the load acting on the cap 7 during the fall becomes small, so that the two felling restricting devices 42, It is good also as a structure provided only one of 47).

In addition, in embodiment, the case where the conduction control apparatuses 42 and 47 were provided only in the left side of the cap 7 was demonstrated as an example. However, this invention is not limited to this, For example, you may make it the structure which attaches conduction control apparatus 42, 47 to the left and right both sides of the cap 7. As shown in FIG.

In addition, in embodiment, the case where the two dustproof mounts 41 located in the back side are attached from the exterior of the cap 7 is illustrated. However, this invention is not limited to this, For example, you may make it the structure which attaches the two dustproof mounts 41 located in the back side from the inside of the cap 7. As shown in FIG.

Moreover, in embodiment, the dustproof mount 41 was provided in four corner positions located in the left front, right front, left rear, right rear of the cap 7 between the turning frame 5 and the cap 7. The case has been described as an example. However, this invention is not limited to this, For example, it is good also as a structure which provides five or more antivibration mounts 41 between the revolving frame 5 and the cap 7.

In addition, in embodiment, the crawler type hydraulic shovel 1 was demonstrated as an example of a construction machine. However, this invention is not limited to this, For example, you may apply to the hydraulic shovel provided with the wheel type lower traveling body. In addition, it can be widely applied to other construction machinery such as, for example, hydraulic crane, wheel loader, tractor.

There is a fear that the construction machine may fall when traveling or working in an unreasonable posture, for example, on a steep slope, and when the construction machine falls, a large load acts on the cap. However, because the conduction restricting device is provided between the rear edge position of the base frame member constituting the cap and the frame, it is possible to restrict the cap from being largely displaced beyond the commercial stroke of the dustproof mount, thereby preventing damage to the dustproof mount. have.

Here, since the conduction regulation apparatus is provided using the base frame member which comprises a cap, for example, a conduction regulation apparatus can be easily installed from the lower side of a cap. In addition, when the cap is removed from the frame for repair or maintenance, the conduction control device can be easily removed. As a result, the workability of attaching and removing the cap can be improved, and the manufacturing cost can be reduced.

When the construction machine is inverted, a large load according to the weight of the construction machine acts from one side of the cap where the hatch is located, and the cap is displaced to lift the one side by this load. Therefore, the fall restraint device is installed at the rear corner position on one side where the hatch of the cap is located, so that the displacement of the cap is within the range of the commercial stroke of the anti-vibration mount even when a load is applied so that the construction machine falls and lifts one side of the cap. It can regulate and can reliably protect the dust mount.

Since the conduction control device can be attached using the attachment base of the base frame member formed as the strength member for installing the dustproof mount, the installation strength of the conduction control device for the cap can be increased, and durability and reliability can be improved. .

When the cap is to be greatly displaced beyond the commercial stroke of the vibration mount, the conduction restrictor can prevent displacement of the cap at this position by contacting the stopper provided at the lower end of the bolt around the through hole, thereby preventing damage to the vibration mount. You can prevent it.

In addition, the conduction restricting device can be easily installed by inserting a bolt from the lower side into the through hole provided in the frame and attaching it to the rear corner position of the base frame member. On the other hand, when the cap is removed from the frame for repair or maintenance, the cap can be removed by a simple operation by removing the bolt from the outside of the cap. As a result, the workability of attaching and removing the cap can be improved, and the manufacturing cost can be reduced.

When the antivibration mount is displaced within the range of the commercial stroke, the stopper and the frame are spaced apart, so that the vibration mount can function to cushion the vibration transmitted from the frame to the cap. On the other hand, when the vibration mount is displaced beyond the commercial stroke, damage to the vibration mount can be prevented by contacting the stopper and the frame around the through hole to restrict the displacement.

For example, a construction machine may fall down when traveling or working in an excessively inclined position such as a steep slope, and when the construction machine falls down, a large load depending on the weight of the construction machine is applied from one side of the cap where the hatch is located. do. For this reason, since the center pillar extended in an up-down direction is provided in one side surface of a cap box, and a center pillar is reinforced by an inside with a reinforcement apparatus, deformation of a cap box can be suppressed small also with a big load. In addition, the load from one side of the cap acts to lift one side of the cap and conduct it. However, since the conduction control device is provided between the frame and the reinforcing device for reinforcing the center pillar, it is possible to restrict the large displacement of the cap by the conduction control device.

Since the conduction control device is provided using a reinforcement device made of a strength member for reinforcing the center pillar, the conduction control device can be attached to the cap side with high strength, so that the conduction of the cap can be reliably prevented. Moreover, since the reinforcement apparatus which reinforces a center pillar is arrange | positioned in the vicinity of a hatchway, the operation | work which attaches or removes fall control measures can be performed easily, and workability can be improved.

Since the conduction regulation measures can be attached using a connection member formed as a strength member for connecting the bottom plate reinforcement member and the center pillar, the adhesion strength of the conduction regulation apparatus to the cap can be increased, thereby improving durability and the like.

When the cap is to be greatly displaced beyond the commercial stroke of the vibration mount, the conduction restrictor can contact the stopper provided at the lower end of the bolt around the through hole to prevent displacement of the cap at this position, thereby damaging the vibration mount. Can be prevented.

In addition, the conduction control device can be easily installed by inserting the bolt from the lower side into the through hole provided in the frame and attaching the lower side of the reinforcing device. On the other hand, when the cap is removed from the frame for repair or maintenance, the cap can be removed by a simple operation by removing the bolt from the outside of the cap. As a result, the workability of attaching and removing the cap can be improved, and the manufacturing cost can be reduced.

When the antivibration mount is displaced within the range of the commercial stroke, the stopper and the frame are spaced apart, so that the vibration mount can function to cushion the vibration transmitted from the frame to the cap. On the other hand, when the antivibration mount is displaced beyond the commercial stroke, the stopper and the frame around the through hole are brought into contact with each other, and the displacement of the antivibration mount can be prevented in advance to prevent damage to the antivibration mount.

Claims (9)

delete delete A frame constituting the support structure, a cap disposed on the frame and partitioning the cab therein and having a hatch on one side in a left and right direction, and installed between the frame and the cap to cushion the vibration with respect to the frame. In the construction machine comprising a dustproof mount to support, The cap is configured to include a base frame made of a frame structure, and a hollow cap box provided on the base frame, The base frame member is constituted by four attachment bases disposed at corner positions of left front, right front, left rear, and right rear, and four connection frames connecting the respective attachment bases, Of the four attachment bases constituting the base frame member, the dustproof mount is installed between the attachment base and the frame disposed at the rear corner of the one side where the hatch of the cap is located, and the commercial stroke of the dustproof mount is established. And a felling regulating device for regulating that the cap is greatly displaced. According to claim 3, wherein the conduction control device is located in the lower side of the cap and the upper and lower through holes provided in the frame, the upper side is fixed to the rear corner position of the base frame member, the lower side penetrates through the through hole And a stopper installed on the lower end side of the bolt, the stopper being configured to contact and regulate the movement of lifting the cap around the through hole. The commercial stroke according to claim 4, wherein the stopper and the frame are spaced apart from each other in a state where the cap is displaced in a commercial stroke range of the dustproof mount, between the stopper and the frame around the through hole, which constitute the conduction control device. The construction machine provided with the clearance gap which contacts the said stopper and the said frame, when exceeding the range of. A frame constituting the support structure, a cap disposed on the frame and partitioning the cab therein and having a hatch on one side in a left and right direction, and installed between the frame and the cap to cushion the vibration with respect to the frame. In the construction machine comprising a dustproof mount to support, The cap is a hollow frame box having a base frame member made of a frame structure, a center filler provided on the base frame member extending in the vertical direction on one side of the left and right directions, and to close the lower side of the cap box And a reinforcing device installed between the bottom plate attached to the base frame member and the center pillar of the bottom plate and the cap box to reinforce the center pillar from the inside, And a fall restraint device between the reinforcement device and the frame for restricting the displacement of the cap significantly beyond the commercial stroke of the dustproof mount. The reinforcement device according to claim 6, wherein the reinforcement device is constituted by a bottom plate reinforcement member provided extending on the bottom plate in a lateral direction, and a connecting member connecting one end of the bottom plate reinforcement member to the center pillar of the cap box. and, And said conduction restricting device is arranged between the connecting member of said reinforcing device and said frame. According to claim 6, The conduction restricting device is located in the lower side of the cap and the through hole in the vertical direction provided in the frame, the upper side is fixed to the reinforcement device and the lower side bolts extending through the through hole and And a stopper provided on the lower end side of the bolt and configured to contact and regulate a movement of lifting the cap around the through hole. The stopper and the frame are spaced apart from each other in a state in which the cap is displaced in a range of a commercial stroke of the dustproof mount, between the stopper and the frame around the through hole. The construction machine provided with the clearance gap which makes the said stopper contact with the said frame when the stroke exceeded the range.

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