JPH0725038U - Lifting device for pile driver - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a lifting device for a pile driver that enables a worker to safely and quickly move up and down to a leader regardless of the turning positional relationship between a lower traveling structure and an upper rotating structure. [Structure] A landing 9 is provided on a leader bracket 5 fixed in front of the upper swing body of the pile driver 1. A ladder locking member 1 having two sets of hooks 10a parallel to the left and right on the landing 9.
Install 0. Two bars 11a, 11a of the ladder 11 are hooked on the hook 10a.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an elevating device for a pile driver, which is used when an operator moves up and down by a leader when performing a pile driving preparation work or an inspection.

[0002]

[Prior art]

 The pile driver is composed of a lower traveling structure and an upper revolving structure. In front of the upper revolving structure, a leader for mounting an earth auger, hammer, etc. for the pile driving work is projected.

In the above-described pile driving machine, conventionally, after the self-supporting work of the leader is completed, the pile driving preparation work such as the assembly of the earth auger and the hammer, the addition of the screw rods generated during the pile driving work, and the like. In order to perform separation or inspection, the worker must climb to the leader and work. In this case, as shown in FIG. 7, when the upper revolving structure 20 is not revolving, the operator uses the upper surface 21a of the crawler 21 which is the lower traveling structure as a scaffolding to lift the upper revolving structure 20 from the underframe upper surface 20a. It moved to the leader bracket 22 and reached the leader 23. Further, when the upper revolving superstructure 20 revolves, even if the upper revolving superstructure 20 is in the position shown in FIG. 8, the worker can reach the reader 23 in the above-described order. As another method, a ladder is leaned against the leader 23 from the ground and an operator may climb the leader 23 directly.

[0004]

[Problems to be solved by the device]

 However, in the above-mentioned case, when the upper swing body 20 is located at a position far from the crawler 21 as shown in FIG. 9, in order for the worker to reach the leader 23, the worker needs to move from the crawler 21 to the device outer plate. However, it is not easy for the operator to transfer to the roof 24 due to the large step between the crawler 21 and the roof 24, and it is not preferable for the worker to work safely. It was

In addition, when a worker leans a ladder against the ground from the ground and an operator directly climbs to the ground, the ground on which the ground is attached is often muddy or uneven, and moreover, the ground between the ground and the ground Since the contact with the upper part was unstable, there was a problem in safety management.

Therefore, the present invention provides a lifting device for a pile driver that allows a worker to safely and quickly move up and down to a leader regardless of the positional relationship between the lower traveling body and the upper swing body of the pile driver. Is intended.

[0007]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, a lifting device for a pile driver according to the present invention comprises a lower bracket, an upper revolving structure rotatably disposed above the lower traveling structure, and a leader bracket for supporting a leader in front of the upper revolving structure. In the pile driving machine projecting, the leader bracket is provided with a landing, a ladder locking member is attached to the landing, and a ladder rail is detachably hooked on the ladder locking member. It has a feature.

[0008]

[Action]

 As described above, since the ladder rails are hooked on the landing ladder locking member that is previously attached to the leader bracket, the ladder is stabilized. The height from the ground to the lower edge of the ladder can be adjusted by selecting the ladder crosspiece that is locked to the ladder locking member.

[0009]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. 1 to 5 show one embodiment of the present invention, in which a pile driver 1 is provided with an upper revolving structure 4 rotatably provided on an upper part of a lower traveling structure 3 traveling by a crawler 2. A leader bracket 5 is provided on the front part of the upper swing body 4 so as to project therefrom. A leader 6 is erected on the leader bracket 5, and the leader 6 is supported from the rear part of the upper swing body 4 by two back stays 7, 7.

In order to support the leader 6 on the upper swing body 4, the front portion of the leader bracket 5 has a two-pronged structure having a flat fork shape. , The pin 8 detachably attaches the landing 9.

The landing 9 is formed by stretching an expanded metal 9b on a rectangular frame 9a formed of a rope. One side is attached to the leader bracket 5 and the other side opposite to the body mounting side is attached. The ladder locking member 10 is attached. Two upward hooks 10a are provided on the ladder locking member 10 so as to be parallel to each other, and a ladder 11 is hooked on the hooks 10a.

The ladder 11 is formed in an inverted J shape with its upper part folded back, and two bars 11a and 11a are hooked on the hooks 10a and 10a, respectively. Further, the length of the ladder 11 is formed so that the lower end thereof does not interfere with the ground when the uppermost crosspiece 11a and the next crosspiece 11a are hooked on the hooks 10a, 10a.

The pile driver 1 as described above is transported on a truck or the like with the landing 9 and the ladder 11 removed and the main body and the leader 6 disassembled, and is assembled when the main body is assembled at the work site. The field 9 is attached to the leader bracket 5 by pins 8. When the leader 6 finishes the self-sustaining work and assembles or dismantles the auger drive device, the hammer device, and the like on the leader 6, that is, when preparing so-called pile driving and dismantling work, the worker does not work on the ladder of the ladder 11 from the ground. By hooking 11a, 11a on the ladder locking member 10 of the landing 9, the operator can directly climb the leader bracket 5 from the ground. As a result, the operator can quickly climb the leader bracket 5 when necessary such as inspecting the leader 6 regardless of the turning positional relationship between the lower traveling body 3 and the upper swinging body 4. Further, since the ladder 11 is hooked on the landing 9 with stability by the hooks 10a of the ladder locking member 10, the operator does not need to worry about unevenness or muddy ground on the lower portion of the ladder 11 and the worker can use the leader bracket 5 You can safely climb up to.

Further, when the upper revolving structure 4 is revolved during the work, the operator pulls the ladder 11 upward at the landing 9, and the lower crosspieces 11 a and 11 a are hooked on the ladder locking member 10. It is possible to fix so that the lower end of the ladder 11 does not interfere with the crawler 2.

The landing is not limited to being detachably attached to the leader bracket as in the above embodiment, but may be fixed to the leader bracket.

[0016]

[Effect of device]

 As described above, according to the present invention, the leader bracket of the upper swing body is provided with the landing, the ladder locking member is attached to the landing, and the ladder rails are detachably hooked to the ladder locking member. Therefore, with a simple structure, the worker can safely and quickly climb the leader bracket regardless of the positional relationship between the lower traveling body and the upper swing body.

Also, by changing the crosspieces of the ladder that is hooked to the ladder locking member, the distance between the lower end of the ladder and the ground can be adjusted, and when the upper swing body is swung, the lower end of the ladder can be adjusted. Can be prevented from interfering with the undercarriage.

[Brief description of drawings]

FIG. 1 is a side view of an essential part showing an embodiment of the present invention.

[FIG. 2] Similarly, a front view of the main part

FIG. 3 is a plan view of the main part of the same.

FIG. 4 is a perspective view of the same main part.

[FIG. 5] Similarly, a side view of the main part of the pile driver.

[Fig. 6] Similarly, a front view of the main part of the pile driver.

FIG. 7 is a plan view of essential parts showing the positional relationship between the lower traveling body and the upper swing body.

FIG. 8 is a plan view of the same main part.

FIG. 9 is a plan view of the main part of the same.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Pile driver, 2 ... Crawler, 3 ... Lower traveling body, 4 ... Upper revolving body, 5 ... Leader bracket, 6 ... Leader, 7 ... Back stay, 8 ... Pin, 9 ... Dance field, 9a ... Frame body, 9b ... Expanded metal, 10 ... Ladder locking member, 10a ... Hook, 11 ... Ladder, 11a ... Crosspiece

Claims (1)

[Scope of utility model registration request] 1. A pile driving machine in which an upper revolving structure is rotatably disposed on an upper part of a lower traveling structure, and a leader bracket for supporting a leader is projectingly provided in front of the upper revolving structure. An elevating device for a pile driver, wherein a landing is provided, a ladder locking member is attached to the landing, and a rail of the ladder is detachably hooked on the ladder locking member.