JP3626153B2 - Bracket for hydraulic breaker - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bracket for a hydraulic breaker that holds a hydraulic breaker that pulverizes rocks, concrete, and the like, and in particular, a bracket for a hydraulic breaker that is attached to a power shovel with an arm pin and a rod pin interposed between the hydraulic breaker and the hydraulic breaker. The connecting pin is composed of a jaw member sandwiched from both sides and positioning the jaw on a surface orthogonal to the arm pin, an upper member holding the arm pin and the rod pin, and a lower member positioned at the upper end of the jaw member and holding the connection pin together with the upper member. Is set so that it has an axis in the plane perpendicular to the arm pin, and a lock plate having a vertical plane parallel to the axis of the arm pin is suspended from the end of the upper member, and the end of the jaw member facing the lock plate A plurality of lock holes are drilled, and the hydraulic breaker swings left and right around the connection pin. Is of the hydraulic breaker bracket which is adapted to insert the lock pin into the lock hole when a predetermined fixed slope hydraulic breaker.
[0002]
[Prior art]
As shown in FIGS. 11 and 12, a hydraulic breaker 101 for crushing rocks, concrete, and the like is sandwiched and fixed between a pair of brackets 102, and the upper end of the bracket 102 is the tip of an arm 104 of a power shovel 103 and a rod 105 has a structure in which the tips are connected by arm pins 106 and rod pins 107, respectively. Therefore, the chisel 108 of the hydraulic breaker 101 can move in the front-rear direction but cannot be tilted in the left-right direction.
[0003]
When digging a groove using the hydraulic breaker 101 assembled to the bracket 102 in the construction work such as a sewer pipe, the side surface of the bracket 102 is grooved before the chisel 108 of the hydraulic breaker 101 as shown in FIG. The side wall 110 of the groove 109 cannot be made vertical when hitting the side wall 110 of the 109, and the target groove cannot be formed because the cross-sectional shape of the groove 109 is V-shaped.
[0004]
For this reason, as shown in FIG. 14, the base 112 is placed on the lower side of the shoe 111 of the excavator 103 to tilt the entire excavator 103, and the side surface of the bracket 102 does not hit the side wall 110 of the groove 109. In this method, the chisel 108 of the hydraulic breaker 101 is pressed against the side wall 110 of the groove 109 for excavation. However, the balance of the power shovel 103 is poor and there is a problem in work safety.
[0005]
Further, when striking the side wall 110 on the opposite side of the groove 109, it is necessary to replace the base 112, and there is a problem that wasteful labor and time are required.
[0006]
When using a hydraulic breaker for burial work such as sewerage, the applicant can easily tilt the hydraulic breaker in the left-right direction, and can safely and efficiently scrape the side wall of the groove vertically. A registered utility model No. 3030092 “Hydraulic breaker bracket” has already been proposed as a simple structure for adjusting the inclination in several steps. Registered utility model No. 3030092 is a bracket for a hydraulic breaker that mounts a hydraulic breaker on a power shovel with an arm pin and a rod pin interposed therebetween, and a jaw member that clamps the hydraulic breaker from both sides and positions a jaw on a surface orthogonal to the arm pin And an upper member that holds the arm pin and the rod pin, and a lower member that is located at the upper end of the jaw member and holds the connection pin together with the upper member, and the connection pin is set to have an axis in a plane orthogonal to the arm pin, A lock plate having a vertical surface parallel to the axis of the arm pin is suspended from the end of the upper member, and a plurality of lock holes are drilled at the end of the jaw member facing the lock plate. Swing the breaker left and right, and insert and fix the pin in the lock hole when the hydraulic breaker 1 reaches the required inclination A hydraulic breaker bracket which is adapted.
[0007]
The registered utility model No. 3030092 will be described in detail. As shown in FIG. 8, the hydraulic breaker 1 mounted on the excavator 3 can be swung around the connection pin 24 and fixed, and the side wall 10 of the groove 9 is fixed. It can be formed vertically. Reference numeral 8 denotes a chisel of the hydraulic breaker 1.
[0008]
The examples shown in FIGS. 8, 9 and 10 will be described.
[0009]
It is a bracket for a hydraulic breaker that attaches the hydraulic breaker 1 to a power shovel 3 with an arm pin 6 and a rod pin 7 interposed.
[0010]
The jaw member 22 sandwiches the hydraulic breaker 1 from both sides, and positions the jaw 21 on a surface orthogonal to the arm pin 6.
[0011]
The upper member 23 holds the arm pin 6 and the rod pin 7.
[0012]
Further, the lower member 25 is located at the upper end of the jaw member 22 and holds the connection pin 24 together with the upper member 23.
[0013]
The connection pin 24 is set so as to have an axial center on a plane orthogonal to the arm pin 6, and the hydraulic breaker 1 is swung in the left-right direction around the connection pin 24 between the upper member 23 and the jaw 21 of the jaw member 22. When the required inclination of the hydraulic breaker is reached, a lock hole 52 and a pin 54 that fits into the lock hole 52 are provided so that they can be fixed.
[0014]
Here, the upper member 23 has two support plates 28 erected on a horizontal upper plate 27 in parallel so as to be orthogonal to the arm pins 6 and the rod pins 7, and an arm boss 29 and a rod boss 30. Each is fixed.
[0015]
Three hanging plates 31 having bosses 37 are suspended from the lower surface of the upper plate 27.
[0016]
The jaw member 22 hangs two opposing jaws 21 on a lower surface of a horizontal jaw plate 32 on a surface orthogonal to the arm pin 6 to sandwich the hydraulic breaker 1.
[0017]
The lower member 25 fixes two upright plates 35 each having a boss 34 at a position entering between the hanging plates 31 and 31 of the upper member 23 on the upper surface of the horizontal lower plate 33. This lower member 25 is screwed onto the upper surface of the jaw plate 32 of the jaw member 22 by bolts 36 and nuts 38, and is connected to a plate 59 which is screwed to the boss 37 with bolts 58 by the bosses 37 and 34 in a horizontal manner. Support. Although the lower member 25 has been described as a separate member from the jaw member 22, it may be provided integrally if necessary.
[0018]
In the upper member 23, a lock plate 51 is suspended from an upper plate 27 on the front end side, and a boss 37 is fixed thereto to hold the connection pin 24.
[0019]
On the other hand, a lock plate 53 in which a lock hole 52 is engraved is provided on the front end side of the surface orthogonal to the arm pin 6 of the jaw member 22, and a holding plate 55 in which a lock pin 54 fitted into the lock hole 52 is provided. The lock plate 51 is provided so as to be screwed by a bolt 56. The lock hole 52 is formed in the lock plate 53 at a position where the hydraulic breaker 1 can be inclined at a predetermined angle, that is, on a circular arc around the connection pin 24, and the pin 54 is inserted into the lock hole 52. Is inserted and screwed to determine the inclination of the hydraulic breaker 1, for example, 10 degrees.
[0020]
[Problems to be solved by the invention]
When using the hydraulic breaker for burial work such as sewer pipes, the applicant can easily tilt the hydraulic breaker in the left-right direction, and can safely and efficiently scrape the side wall of the groove vertically. Has been provided as a registered utility model No. 3030092 “Hydraulic Breaker Bracket”.
[0021]
(1) It is unstable when the hydraulic breaker 1 is removed from the power shovel 3 when the hydraulic breaker 1 is stopped, and the hydraulic breaker 1 is placed on the ground as shown in FIG. Further, it is difficult to lay sleepers on rough terrain such as a work site, and there is a risk that the hydraulic breaker 1 rolls over. Further, it is very difficult to remove the lower connection pin 24 and the lock pin 54 and the lock plate 51 may be damaged.
[0022]
If the pin behind the operator falls off from the operator for some reason during the breaker operation, it is difficult for the operator to see it, and there is a risk of serious malfunctions if the operator continues to work without noticing it. is there.
[0023]
(2) Although the connection pin 24 that is the rotation center of the hydraulic breaker 1 is divided into two, in order to rotate smoothly, the two pins need to be on the same axis, and high machining accuracy is required. There were many places, which led to an increase in cost.
[0024]
[Means for Solving the Problems]
Therefore, the present invention provides a hydraulic breaker that can be easily tilted in the left-right direction when a hydraulic breaker is used in burial work such as a sewage pipe, and the side wall of the groove can be scraped vertically safely and efficiently. in brackets, when placing a hydraulic breaker in the ground, the hydraulic breaker can be placed in a stable posture, the upper on to enable the arrangement to a position where one and connection pins of the holder in the connecting pin can be visually recognized from an operator A hydraulic breaker bracket for mounting a hydraulic breaker on a power shovel with an arm pin and a rod pin interposed therebetween, a jaw member that sandwiches the hydraulic breaker from both sides and positions a jaw on a surface orthogonal to the arm pin, and an arm pin and a rod pin An upper member that holds the connection pin and a lower pin that is located at the upper end of the jaw member and holds the connection pin together with the upper member. The connection pin is set to have an axial center on the surface orthogonal to the arm pin, and a lock plate having a vertical surface parallel to the axis of the arm pin is suspended from the end of the upper member. A plurality of lock holes are drilled at the end of the jaw member, and the hydraulic breaker is swung left and right around the connection pin, and when the required angle of the hydraulic breaker is reached, the lock pin is inserted and fixed in the lock hole In the bracket for a hydraulic breaker, a rib having a shape that allows the hydraulic breaker to be placed in a stable posture when the hydraulic breaker is placed on the ground is projected on the outer periphery of the lock plate , The bracket for a hydraulic breaker is configured with a connection pin, and is arranged at a position where a holder for the connection pin is visible from an operator .
[0025]
BEST MODE FOR CARRYING OUT THE INVENTION
The present invention will be described in detail below based on specific embodiments shown in the accompanying drawings.
[0026]
The bracket for a hydraulic breaker of FIGS. 1 to 7 of the present invention is given the same reference numeral to the same component as the bracket for a hydraulic breaker of FIGS.
[0027]
1 is a front view of a bracket for a hydraulic breaker according to one embodiment of the present invention, and FIG. 2 is a side view of a part of FIG.
[0028]
The upper member 23 connected to the arm pin 6 and the rod pin 7 of the power shovel 3 and the lower member 25 are connected by a connection pin 71, the jaw member 22 is fixed to the lower member 25 , and the lock plate 51 is attached to the upper member 23. 3 is fixed, and a lock pin 54 is fitted in a boss hole provided in the lock plate 51 and a hole provided in the lock plate 53 fixed to the jaw member 22, and the hydraulic breaker 1 is inclined as shown in FIG. Let
[0029]
4 is a front view of a conventional hydraulic breaker, and FIG. 5 is a side view of a part of FIG.
[0030]
When the hydraulic breaker 1 is removed from the excavator 3 and placed on the ground to perform work other than the breaker work, there is a risk that the lock plate 51 will fall down and roll over as shown in FIG. When the hydraulic breaker 1 is placed on the ground on the outer periphery, a rib 72 is provided so that the hydraulic breaker 1 can be placed in a stable posture. Ribs 72 are provided on the outer periphery of the trapezoidal lock plate 51. As shown in FIG. 7, the rib 72 has a lower portion formed in an oblique shape so that the hydraulic breaker 1 has a stable posture. The rib 72 serves to reinforce the lock plate 51.
[0031]
Next, in the present invention, the connection pin 24 is conventionally divided and used, but high-accuracy processing is required, which causes an increase in cost. Further, when the connection pins 24 are arranged at two locations, the holder of the connection pins 24 cannot be visually recognized by the operator (the holder of the connection pins 24 on the rear side can be visually recognized by the operator, but the connection pins 24 of the front side are not visible. The holder cannot be visually recognized by the operator). If the holder is broken, it cannot be dealt with immediately.
[0032]
The connection pin 71 is inserted through the boss 37 fixed to the hanging plate 31 of the upper member 23 and the upright plate 35 of the lower member 25 , and a bolt 73 is passed through the rear boss 37 and the connection pin 71 to connect the shaft of the connection pin 71. The direction will be retained. Reference numeral 76 denotes an adjustment hole for adjusting the connection pin 71 to a predetermined position in the axial direction.
[0033]
If the lock becomes ineffective due to breakage of the lock pin 54, etc., it is dangerous to move. Therefore, in the unlikely event that the lock pin 54 is largely rotated due to breakage or the like, the upper corner portion of the upright plate 35 is formed in the tapered stopper 74 so as not to allow a certain rotation.
[0034]
When the hydraulic breaker 1 is placed on the ground with the lock plate 51 facing down, the lock plate 51 may be deformed. To prevent this deformation, the lock pin 54 is fitted and the boss fixed to the lock plate 51 is fitted. 77 and the boss 75 fixed to the jaw member 22 were set to have a gap C of 2 to 3 mm.
[0035]
【The invention's effect】
As described above, the present invention is a bracket for a hydraulic breaker for mounting a hydraulic breaker on a power shovel with an arm pin and a rod pin interposed between the jaws and sandwiching the hydraulic breaker from both sides and positioning a jaw on a surface orthogonal to the arm pin. It consists of a member, an upper member that holds the arm pin and rod pin, and a lower member that is located at the upper end of the jaw member and holds the connection pin together with the upper member, and the connection pin is set to have an axis in a plane perpendicular to the arm pin. A lock plate having a vertical surface parallel to the axis of the arm pin is suspended from the end of the upper member, and a plurality of lock holes are formed in the end of the jaw member facing the lock plate, with the connection pin as the center. Swing the hydraulic breaker in the left-right direction so that the lock pin is inserted and fixed in the lock hole when the hydraulic breaker reaches the required inclination A hydraulic breaker bracket that, on the outer periphery of the lock plate, when placing a hydraulic breaker in the ground, the hydraulic breaker projecting ribs shaped to be placed in a stable posture, the connecting pins in one connection pin Since the hydraulic breaker bracket is configured and disposed at a position where the connection pin holder can be visually recognized by the operator, the hydraulic breaker can be placed in a stable posture when the hydraulic breaker is placed on the ground. In addition, the manufacturing was simplified, the cost was reduced, and the safety was increased.
[Brief description of the drawings]
FIG. 1 is a front view of a bracket for a hydraulic breaker according to an embodiment of the present invention.
FIG. 2 is a side view of a part of FIG.
FIG. 3 is a front view of a state in which the hydraulic breaker of the present invention is rotated and the stopper is in contact with the upper member.
FIG. 4 is a front view of a conventional bracket for a hydraulic breaker.
5 is a side view of a part of FIG.
FIG. 6 is a side view of a conventional hydraulic breaker bracket placed on the ground.
FIG. 7 is a side view of the hydraulic breaker bracket of the present invention placed on the ground.
FIG. 8 is a front view showing an outline of the entire power shovel.
FIG. 9 is a front view of a conventional bracket for a hydraulic breaker.
10 is a side view of a part of FIG.
FIG. 11 is a side view of a power shovel equipped with a conventional hydraulic breaker.
FIG. 12 is a front view of a conventional main part.
FIG. 13 is a front view of a state in which a hydraulic breaker is mounted on a conventional power shovel to dig a groove.
FIG. 14 is a front view of a state in which a conventional table is placed under a shoe and a groove is dug with a hydraulic breaker of a power shovel.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Breaker 6 ... Arm pin 7 ... Rod pin 3 ... Power shovel 21 ... Jaw 22 ... Jaw member 71 ... Connection pin 25 ... Lower member 51 ... Lock plate 52 ... Lock hole 72 ... Rib 74 ... Stopper C ... Gap

Claims (1)

A bracket for a hydraulic breaker that mounts the hydraulic breaker on an excavator with an arm pin and a rod pin interposed therebetween, and holds the arm pin and the rod pin, holding the hydraulic breaker from both sides and positioning the jaw on a surface orthogonal to the arm pin. It consists of an upper member and a lower member that is located at the upper end of the jaw member and holds the connection pin together with the upper member. The connection pin is set so as to have an axis in a plane orthogonal to the arm pin, and the axis of the arm pin from the end of the upper member A lock plate having a vertical surface parallel to the center is suspended, a plurality of lock holes are drilled at the ends of the opposing jaw members of the lock plate, and the hydraulic breaker is swung left and right about the connection pin The hydraulic breaker bra is designed so that the lock pin is inserted and fixed in the lock hole when the required inclination of the hydraulic breaker is reached. In Tsu bets, the outer periphery of the lock plate, when placing a hydraulic breaker in the ground, the hydraulic breaker projecting ribs shaped to be placed in a stable posture, by forming the connection pins in one connection pins, The bracket for the hydraulic breaker is arranged at a position where the holder of the connection pin can be seen by the operator .

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