JPS6240685Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field This invention relates to a pile destruction machine used to destroy the extra length at the top of a concrete pile.

(B) Prior art In general, this type of pile destruction machine has a structure in which the left and right holding arms are pivotally connected to a common support shaft. There are strength problems such as the huge load applied from the arms and the need to increase the diameter of the pivot shaft accordingly, and also when compressing the holding arms against the pile by operating the hydraulic cylinder, There was a problem in that it was difficult to apply pressure evenly to the pile with the left and right holding arms, and as a result, effective destruction work could not be performed.

Therefore, as a crusher that solves the above problems,
There is one described in Utility Model Publication No. 53-44125. This solves the strength problem of the pivot shaft by independently pivoting the left and right arms to the frame, and also equalizes the squeezing action of both the left and right holding arms, resulting in effective destruction. It is designed to allow work to be done.

(c) Problems to be solved by the invention However, such a crusher still had the following problems.

Since the distance between the pivot points of the frame that pivots the left and right arms is wide, the pair of tuning gears installed in the center of the frame must rotate by a considerable angle. The shredded material insertion space becomes shallow, making it impossible to perform sufficient shredding work.

The tuning gear is constructed separately from the frame, and the arm and the tuning gear are connected by a tuning link, resulting in a complex structure, high manufacturing costs, and low maintenance. It becomes complicated.

Since it is configured to be used by hanging from a crane or the like, it is not possible to effectively crush objects that have complicated shapes or crush indoor walls.

An object of the present invention is to provide a crusher that can solve the above problems.

(d) Means for solving the problem The present invention includes a pair of holding arms that are arranged approximately parallel to each other and have opposing inner surfaces as fracture surfaces, and a protrusion on the inside of the proximal end of the holding arms. and a pivot bracket that mutually extends toward the base end of the other hugging arm, and a midway portion of the pivot bracket is pivotally supported at both ends by a pivot, and cooperates with the hugging arm. A frame that forms a space for crushing piles, etc., a synchronizing tooth provided at the extended tip of the pivot bracket and meshing with each other, a pair of actuating arms each extending in the direction of the proximal end of the holding arm, and a pair of actuating arms between the actuating bowls. a hydraulic cylinder which is interposed in the hydraulic cylinder and whose cylinder base end and telescopic rod tip are pivoted to the extension end of the operating arm; and a pair of handles which are provided in the cylinder base end of the hydraulic cylinder and the telescopic rod tip and project in the axial direction. This relates to a pile breaking machine consisting of:

(E) Embodiments The present invention will be explained below based on embodiments shown in the drawings.

In FIGS. 1 and 2, 1 and 1 are left and right holding arms that are formed in an arc shape and have fractured surfaces 1a and 1a on their inner surfaces, and the holding arms 1 and 1 are at the base end thereof. Pivot brackets 1b, 1b are integrally provided on the inner side and extend toward the base ends of the other hugging arms 1, 1.

Reference numeral 2 denotes a frame interposed between the arms 1, 1, and at both ends of the frame 2, the middle parts of the pivot brackets 1b, 1b of the arms 1, 1 are swingably and independently pivoted. Arrived 3.3 times.

Further, operating arms 4, 4 are integrally extended from the rear portions of the proximal ends of the hugging arms 1, 1, respectively.

Reference numeral 5 denotes a hydraulic cylinder interposed between the operating arms 4, 4, the base end of the cylinder body 5a is pivotally connected 7 to the right operating arm 4 via a metal fitting 6, and the tip of the telescopic rod 5b is connected to the left operating arm 4. It is pivotally attached 9 to the arm 4 via a metal fitting 8. By the expansion and contraction of this hydraulic cylinder 5, the left and right holding arms 1, 1 are
It is configured to rotate around the pivot parts 3, 3.

Reference numerals 10 and 10 designate synchronizing teeth integrally formed on the left and right holding arms 1, 1, respectively, which are formed in an arc shape centered on the pivoting portions 3, 3 of the holding arms 1, 1; Both biting teeth 10, 10 mesh with each other.

In the figure, 3', 3' indicate the support shafts of the pivot parts 3, 3 of the holding arms 1, 1, and 11, 11 indicate the handles 1 laterally connected to the left and right fittings 6, 8, respectively.
2 and 13 are hydraulic hoses, and P is a concrete pile.

Therefore, when the hydraulic cylinder 5 is shortened, the left and right holding arms 1, 1 rotate outward around the pivot parts 3, 3 while being synchronized by the synchronizing teeth 10, 10. , the space between the holding arms 1 and 1 will be expanded.

Then, with the holding arms 1, 1 expanded, the concrete pile P is inserted deep into the crushing space such as the pile formed between the holding arms 1, 1, and then the hydraulic cylinder 5 is extended. , the left and right holding arms 1, 1 rotate inward around the pivot points 3, 3, and gradually apply confining pressure to the concrete pile P from the outer periphery, destroying this concrete pile P. I'm going to go to the middle of the day.

(F) Effects With the above configuration, the present invention has the following effects.

A pivot bracket is provided protruding from the inside of the base end of the holding arm, and both ends of the frame are pivoted in the middle of the bracket, so the amount of rotation of the synchronizing teeth can be reduced, and the holding arm can hold objects to be crushed, such as piles. It is possible to fully insert piles, etc., formed between them into the crushing space, and crush them reliably.

Since the synchronizing tooth is formed integrally with the holding arm, the structure of the crusher can be significantly simplified, it can be manufactured at low cost, and maintenance is also easy.

Since the handles were attached to both ends of the hydraulic cylinder,
The crusher can be operated with both hands, and even objects to be crushed, indoor walls, etc. that have complex shapes can be easily crushed.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing a pile destruction machine according to the present invention, and FIG. 2 is a side view of the same. 1, 1: Holding arm, 2: Frame, 3, 3: Pivot joint, 4, 4: Operating arm, 5: Hydraulic cylinder, 10,
10: Biting tooth for synchronization, P: Concrete pile.

Claims (1)

[Scope of Claim for Utility Model Registration] (a) A pair of holding arms 1, 1 arranged with a substantially parallel interval and having opposing inner surfaces as crushing surfaces 1a, 1a; (c) pivot brackets 1b, 1b that protrude inwardly and mutually extend toward the base ends of the other holding arms 1, 1; A frame 2 which is pivotally supported in the middle so as to be swingable and which cooperates with the holding arms 1 and 1 to form a space for crushing piles, etc.; bite teeth 10, 10
and (e) a pair of operating arms 4, 4 extending in the direction of the proximal end of the holding arms 1, 1, respectively, and (d) interposed between the operating bowls 4, 4, and actuating the base end of the cylinder and the tip of the telescopic rod 5b. Destruction of piles, etc. consisting of a hydraulic cylinder 5 pivotally supported at the extended ends of the arms 4, 4, and a pair of handles 11, 11 protruding in the axial direction from the cylinder base end of the hydraulic cylinder 5 and the tip of the telescopic rod 5b. Machine.