JP2011157736A - Grease feeding and oil feeding structure of swing device of construction machinery - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a grease feeding and oil feeding structure of a swing device of construction machinery, in which the operation of feeding grease into grease feeding piping for the swing device with low maintenance frequency and the operation of feeding the grease into grease feeding piping for a working device with relatively high maintenance frequency can be surely performed without mistakes. <P>SOLUTION: In the grease feeding and oil feeding structure of the swing device of the construction machinery, a swing unit is equipped with a grease feeding port and an oil feeding one; the grease feeding port is formed from a first grease feeding port 24 for feeding the grease to a mechanism portion with high grease feeding frequency, and a second grease feeding port for feeding the grease to a mechanism portion with low grease feeding frequency; a grease feeding opening of first grease feeding piping 24b is arranged in a position to enable easy inspection, such as a position to enable access to the ground; and a grease feeding opening of second grease feeding piping and an oil feeding opening of oil feeding piping are arranged in positions to disable the easy inspection, such as positions to which a person gets access by ascending onto the top surface of the machinery. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a greasing / oiling structure for a turning device in a construction machine such as a hydraulic excavator.

  2. Description of the Related Art Conventionally, for example, a hydraulic excavator includes a lower traveling body and an upper revolving body that is rotatably mounted on the lower traveling body.

  The upper swing body is provided with a swing device (also referred to as a swing speed reducer) that drives the upper swing body to rotate, a driver's cab, a work device, and the like. The turning device includes a hydraulic motor, a gear reduction mechanism, and the like, and lubricating oil is accommodated in the gear reduction mechanism. Since this lubricating oil is consumed when the turning device is driven, it is necessary to periodically supply the lubricating oil (see, for example, Patent Document 1 and Patent Document 2).

  In addition, an upper swing body is rotatably mounted on the swing device disposed on the lower traveling body via a swing bearing, and the upper swing body is driven to swing in the swing bearing. Pinion and an internal ring gear meshing with the pinion. When the pinion is rotationally driven by, for example, a hydraulic motor, the upper swing body rotates on the lower traveling body around the center of the ring of the ring gear. In addition, grease such as grease (hereinafter simply referred to as “grease”) is periodically lubricated on the meshing tooth surfaces of the pinion bearing and the pinion ring and the gear in order to prevent malfunction and wear due to friction. There is a need to.

  On the other hand, the said working device is comprised with the boom, the arm, the bucket, and the various cylinders which drive these. In addition, it is necessary to periodically supply grease to each connecting portion of the working device in order to prevent malfunction due to friction and generation of wear.

  For this reason, in a turning device in a construction machine such as a hydraulic excavator, grease is supplied to an oil supply port for supplying lubricating oil, an oil supply pipe with an oil nipple connected to the oil supply port, and each mechanism portion in the turning device. Grease supply port and a grease supply pipe with a grease nipple connected to the grease supply port, a grease supply port for supplying grease to each mechanism in the work device, and a supply with a grease nipple connected to the grease supply port Oil piping is provided.

  In addition, each of these pipes is gathered at a position where an operator can work on the ground without climbing on the upper swinging body (hereinafter, this position is referred to as a “ground accessible position”). It arrange | positions so that oil supply and grease supply can be performed in the accessible position.

JP 2006-207184 A. Japanese Patent Application Laid-Open No. 2000-110197.

As described above, the conventional oil supply / grease supply pipes are all provided at a location accessible to the ground. However, even in a portion where the same grease is used, the frequency of supplying grease to the mechanism portion in the swivel device is greatly different from the frequency of supplying grease to each mechanism portion of the working device. For example, if grease is excessively added to the mechanism portion in the swivel device, there is a concern that the swivel motor may be damaged, for example, an oil seal for sealing the gear oil may be damaged and the oil may flow out and the gear may be burned. However, in such a structure in which all the lubrication and lubrication pipes are gathered at a location where ground access is possible, the maintenance worker can perform the lubrication piping for the swivel and the lubrication for the work equipment. There was a problem that there was a risk that the oil piping would be mistaken for lubrication.

  Therefore, for example, it is possible to reliably perform the greasing operation to the greasing piping for the swivel device with relatively low maintenance frequency and the greasing operation to the greasing piping for the working device with relatively high maintenance frequency without making a mistake. The technical problem which should be solved arises in order to be able to do, and this invention aims at solving this problem.

  The present invention has been proposed in order to achieve the above object, and the invention according to claim 1 is directed to a grease supply port for supplying grease and a lubricant supply for supplying lubricating oil to a turning unit disposed in the upper turning body. In a greasing / lubricating structure of a swivel device in a construction machine having a port, the grease greasing port supplies grease to a first greasing port that supplies grease to a mechanism portion with high greasing frequency and a mechanism portion with low greasing frequency. A first greasing pipe connected to the first greasing port, a second greasing pipe connected to the second greasing port, and the lubrication port. An oil supply pipe connected to the first oil supply pipe, and the oil supply port of the first oil supply pipe is regularly inspected and disposed at a position accessible to the ground. The greasing port of the greasing pipe; The fuel supply port of the pipe to provide a grease-lubrication structure of the turning device in the construction machine, characterized by comprising disposed within the machine top.

  According to this configuration, for example, the first greasing pipe having a high greasing frequency is arranged at a position where the ground can be accessed, and the second greasing pipe having a low greasing frequency is accessed at the upper part of the machine, for example, the upper surface of the machine. Since the first greasing pipe and the second greasing pipe can be visually distinguished by being disposed at a position to be accessed by climbing up, it is possible to avoid mistakes in the greasing pipe. In addition, since the first greasing pipe having a high greasing frequency is arranged at a position accessible to the ground, it does not hinder maintenance work.

  The invention according to claim 2 is the construction machine according to claim 1, wherein the grease supply port of the second grease supply pipe and the oil supply port of the oil supply pipe are arranged close to each other. A lubrication / oil supply structure for a swivel device is provided.

  According to this configuration, it is possible to perform the work at the same position by climbing the upper surface of the machine and supplying the oil to the second oil supply pipe and the oil supply pipe.

  The invention according to claim 3 is the structure according to claim 1 or 2, wherein the first grease supply pipe is a grease supply pipe for supplying grease to the working device, and the second grease supply pipe is supplied with grease to the slewing bearing. Provided is a lubrication / oil supply structure for a turning device in a construction machine which is a grease supply pipe.

  According to this configuration, the first greasing pipe can be used for working equipment with a high greasing frequency, and the second greasing pipe can be used for a swirl bearing with a low greasing frequency. Fat can be performed.

According to the first aspect of the present invention, among the greasing pipes that supply the same grease, the first greasing pipe with a high greasing frequency is located at a ground accessible position, and the second greasing pipe with a low greasing frequency is on the upper surface of the machine. Since the two greasing pipes are arranged in different positions, and the position to be accessed by climbing, the first greasing pipe and the second greasing pipe can be easily distinguished visually. Can be surely eliminated. In addition, since the first greasing pipe with high greasing frequency is arranged at a position where the ground can be accessed, it is not necessary to climb to the upper surface of the machine each time, and maintenance work is easy and smooth. be able to.

  According to the second aspect of the present invention, the grease supply to the second grease supply pipe and the lubrication oil supply to the oil supply pipe can be simultaneously performed at the same position by climbing the upper surface of the machine. In addition to the effect of the invention, it is possible to smoothly supply grease to the second oil pipe and supply lubricating oil to the oil supply pipe.

  Since the invention according to claim 3 can perform greasing at a position where ground access is possible to the work device having a high greasing frequency, in addition to the effect of the invention according to claim 1, the greasing work to the work device Can be done smoothly.

The side view of the hydraulic excavator to which the greasing / oil supply structure of the turning device of the present invention is applied. (A) is a side view showing a greasing structure provided on a boom, an arm and the like of the excavator shown in FIG. 1, and (b) is a plan view of a greasing port of an arm cylinder. The perspective view which shows arrangement | positioning of the greasing structure and apparatus in the upper revolving body of the hydraulic shovel shown in FIG. 1 from a side surface side. The perspective view which shows arrangement | positioning of the greasing structure and apparatus in the upper revolving body of the hydraulic shovel shown in FIG. 1 from the back side.

  The present invention, for example, to reliably perform a greasing operation on a greasing pipe for a swivel device with a relatively low maintenance frequency and a greasing operation on a greasing pipe for a working device with a relatively high maintenance frequency without mistakes. In order to achieve the purpose of enabling the lubrication of the swiveling device in a construction machine provided with a grease supply port for supplying grease and an oil supply port for supplying lubricating oil in a turning unit disposed in the upper turning body. In the lubrication structure, the grease greasing port is formed of a first greasing port for supplying grease to a mechanism portion having a high greasing frequency and a second greasing port for supplying grease to a mechanism portion having a low greasing frequency, and A first greasing pipe connected to the first greasing port, a second greasing pipe connected to the second greasing port, and an oil feeding pipe connected to the lubrication port, First The greasing port of the greasing pipe is arranged at a position where the ground can be accessed, and the greasing port of the second greasing pipe and the lubricating port of the lubrication pipe are arranged to be accessed by climbing to the upper surface of the machine. It was realized by doing.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a greasing / oiling structure for a turning device in a construction machine according to the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 is an overall side view of a hydraulic excavator shown as a construction machine to which a greasing / oiling structure for a turning device according to the present invention is applied. In the figure, a hydraulic excavator 10 has a lower traveling body 11, an upper revolving body 13 that is pivotably mounted on the lower traveling body 11 via a swivel bearing 12, and can be raised and lowered on the upper revolving body 13. This is generally composed of the working device 14 provided. Further, on the frame 15 of the upper swing body 13, a cab 16 and a swing unit 17 that define a cab are installed.

  The slewing bearing 12 is provided with an upper slewing body 13 slidably mounted, a pinion (not shown) for driving the upper slewing body 13 to rotate, and an internal ring gear (not shown) meshing with the pinion. It has.

  FIGS. 2A and 2B and FIGS. 3 and 4 show main oil supply structures and devices provided on the upper swing body 13 of the excavator 10.

  First, in FIGS. 2A and 2B, a boom cylinder 14b and an arm 14c for moving the boom 14a up and down are moved up and down on a boom 14a provided so as to be able to be raised and lowered in front of the upper swing body 13. Arm cylinder 14d is provided. Thus, the boom 14a can be freely moved up and down to the working position and the lowered position by the boom cylinder 14b. Further, the pivoting parts such as the boom cylinder 14b and the arm cylinder 14d are supplied with grease for preventing wear and friction. In this embodiment, the first pivoting part provided on the pivoting part of the arm cylinder 14d is used. The greasing port 24 will be described. Accordingly, it is natural that the same configuration is adopted for the boom cylinder 14b and the other bucket cylinder 14e.

  Thus, although the first greasing port 24 is a place where frequent lubrication is performed, when the first greasing port 24 is lubricated, the boom 14a is lubricated by the boom cylinder 14b. The position can be lowered to a gland, for example, the ground, and can be lubricated from the first greasing pipe 24b via a grease nipple 24a provided in the first greasing port 24.

  Next, FIGS. 3 and 4 show a main greasing structure and equipment on the upper swing body 13 of the excavator 10. In the figure, a turning unit 17 disposed on the upper turning body 13 includes a hydraulic motor 17a and a gear reducer 17b for reducing the rotational output of the hydraulic motor 17a. Further, lubricating oil is contained in the gear reducer 17b.

  The swivel unit 17 has a greasing port 19 (hereinafter referred to as “second greasing port 19”) for supplying grease for preventing wear and friction to the pinion and ring gear in the swivel bearing 12, and the like. An oil supply port 20 for supplying lubricating oil is provided in the speed reducer 17b. The second greasing port 19 is attached with a second greasing pipe 19b having a grease nipple 19a at the greasing port. The oil supply port 20 is provided with a grease supply pipe 20b having an oil supply nipple 20a at the oil supply port.

  In addition, the oil supply pipe 20b for supplying lubricating oil to the grease nipple 19a which is the oil supply port of the second oil supply pipe 19b for supplying oil to the slewing bearing 12 and the speed reducer 17b. The refueling nipple 20a, which is a mouth, is attached to the mounting frame 21 installed on the upper swing body 13 so that, for example, an operator cannot ride on the upper swing body 13 unless the operator can get on the upper revolving body 13. The brackets 23 are detachably attached via the brackets 23 and are installed adjacent to each other in an aggregated state.

  Next, the operation of the grease / oil supply structure configured as described above will be described. First, when grease is supplied to the arm cylinder 14c, an operator can supply grease from a grease nipple 24a disposed at a position accessible to the ground. The arm cylinder 14c is lubricated relatively frequently, but the operator does not climb on the machine, that is, the upper swing body 13, and lowers the boom 14a to the ground position as described above. In addition, it is possible to easily perform the greasing in a position where the ground can be accessed.

On the other hand, when supplying grease to the slewing bearing 12 or supplying lubricating oil to the speed reducer 17b, the operator climbs onto the upper slewing body 13 and supplies an oiling nipple 20a disposed on the mounting frame 21. Can be supplied with oil, or grease can be supplied from the grease nipple 19a. In this case, the supply of grease to the slewing bearing 12 is different from the case of supplying grease to the working device 14, and the worker climbs on the upper slewing body 13. , The working device 14 is not mistakenly lubricated. It should be noted that the refueling work or the greasing work performed by climbing on the upper revolving body 13 is less burdensome to the operator because the work frequency is low.

  Therefore, according to the excavator 10 according to the present embodiment, the first greasing pipe 24b having a high greasing frequency and the second greasing pipe 19b having a low greasing frequency can be respectively accessed at the ground and the upper swing body 13 (machine). ), The first greasing pipe 24b and the second greasing pipe 19b can be visually distinguished, and the wrong greasing is performed. Can be eliminated without fail. In addition, since the first greasing pipe 18b having a high greasing frequency is disposed at a position where the ground can be accessed, the maintenance work becomes easy and the greasing work can be performed smoothly.

  Reference numeral 18 is a drain port, 18a is a drain nipple, and 18b is a drain hose.

  It should be noted that the present invention can be variously modified without departing from the spirit of the present invention, and the present invention naturally extends to the modified ones.

  Although the present invention is applied to a greasing / oil supply structure of a swivel device in a hydraulic excavator, it can also be applied to other greasing / oil supply structures such as a lifting machine and a crane.

10 Hydraulic excavator (Construction machinery)
11 Lower traveling body 12 Swivel bearing 13 Upper revolving body 14 Working device 14a Boom 14b Boom cylinder 14c Arm 14d Arm cylinder 14e Bucket cylinder 15 Frame 16 Cab 17 Swing unit 18 Drain port 18a Drain nipple 18b Drain hose 19 Second greasing port 19a Lubrication nipple 19b Second greasing pipe 20 Lubrication port 20a Lubrication nipple 20b Lubrication pipe 21 Mounting frame 22 Bracket 23 Bracket 24 First greasing port 24a Grease nipple 24b First greasing pipe

Claims (3)

In a greasing / oil supply structure for a swivel device in a construction machine that includes a greasing port for supplying grease and a lubrication port for supplying lubricating oil in a swivel unit disposed in the upper swing body,
The grease greasing port is formed of a first greasing port for supplying grease to a mechanism portion having a high greasing frequency and a second greasing port for supplying grease to a mechanism portion having a low greasing frequency. A first greasing pipe connected to the greasing port, a second greasing pipe connected to the second greasing port, and a lubricating pipe connected to the lubrication port,
It is a place where the greasing port of the first greasing pipe is inspected on a daily basis, and is disposed at a position accessible to the ground. Further, the greasing port of the second greasing pipe, A lubrication / oil supply structure for a swivel device in a construction machine, wherein the oil supply port of an oil supply pipe is disposed inside the upper part of the machine.   2. The greasing / oiling structure for a swivel device in a construction machine according to claim 1, wherein the greasing port of the second greasing pipe and the oiling port of the oiling pipe are arranged close to each other.   The construction according to claim 1 or 2, wherein the first grease supply pipe is a grease supply pipe for supplying grease to the work device, and the second grease supply pipe is a grease supply pipe for supplying grease to the swivel bearing. Lubrication / oil supply structure for swivel devices in machinery.

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