KR102061198B1 - A pulley assembly for hammers of pile driver - Google Patents

Abstract

The present invention relates to a middle pulley for a hammer of a pile driver, including a guide roller for guiding a wire connected to a hammer and installed in an auxiliary leader (20) installed on one side of a leader (10) to guide an auger (11) at an upper end. The middle pulley for a hammer of a pile driver includes: two plate members (321) fixed to each other and spaced apart; and a body (32) having guide rollers (33) in the upper part of both sides to rotate. The body (32) is installed to rotate on a fixing unit (31) installed at an upper end of the auxiliary leader (20). The fixing unit (31) includes: a fixing block (23) connected to a support plate (21) fixed to an upper end of the auxiliary leader (20) and having a groove (231) on a side; and a ring member (311) installed to rotate on the outer circumference of the fixing block (23) and having the groove (231). A lower end of the body (32) is fixed to a base unit (36), and the base unit (36) is fixed onto the upper side of the ring member (311). So, the body (32) can rotate on the fixing block (23) with the ring member (311). So, the middle pulley for a hammer of a pile driver can minimize excessive sloshing of the wire when a hammer operates. Also, the middle pulley for a hammer of a pile driver has a wire separation prevention unit for preventing the wire from being separated and, therefore, can prevent the wire from being separated from a guide roller when the hammer operates. So, the middle pulley for a hammer of a pile driver can improve safety and be installed to rotate at the upper end of the auxiliary leader in a simple structure. Therefore, the middle pulley for a hammer of a pile driver can reduce manufacturing costs.

Description

Middle pulley for driving hammer {A PULLEY ASSEMBLY FOR HAMMERS OF PILE DRIVER}

The present invention relates to an intermediate pulley for a hammer, particularly a hammer for operating a hammer at a height relatively lower than a hammer height of a hammer by a wire rope installed on a pulley at the top of a leader in a cruiser equipped with a hammer and an auger. It's about pulleys.

In general, the rudder or pile driver is equipped with a pulley on the top of the leader, and through the guide rollers of the pulley, it is connected to the auger and the hammer with wires, and the punching work by the auger is carried out as necessary. .

As shown in FIG. 1, such a driving machine is provided with a leader 3 vertically at the front end of a crane 1 that is moved by a chain wheel, as shown in FIG. 1, and at the top of the leader 3. A pulley 4 having a plurality of guide rollers is installed so that the auger 6 for rotating the wire 5 to drive the screw tube S is suspended, and the front guide rail 7 is installed vertically to the leader 3. ) Will be lifted and operated.

In addition, another auxiliary leader 8 is provided on one side of the leader 3, and a hammer 9 is provided on the auxiliary leader 8.

Therefore, if the pile is to be piled into the ground, first, the screw pipe (S) by using a crane wire, etc. in the vertical direction to the position of the pile to be driven, and then the auger (6) to drive the scrubbing tube (S) After drilling the ground by the concrete pile into the perforated hole, the hammer (9) is raised with a wire and then dropped by gravity to hit the concrete pile in the hole.

The length of the leader (3) is typically composed of a length of 27m to a maximum of 48m, along with the length of the hammer wire for raising the hammer (9) for the type of concrete pile that is typed into a hole drilled by a screw tube Longer

Accordingly, the impact generated when the concrete pile is typed by the hammer 9 is transmitted to the hammer wire, thereby increasing the width of the hammer wire rumble, and the shaking of the leader 3 due to the heavy hammer wire rumble. There is a problem that the occurrence of the leader 3 is shaken, the phenomenon of cutting the wire of the hammer ride hammer often occurs, there was a large risk of safety accident.

In order to solve this problem, Korea Patent Publication No. 10-1851105 (Registration Date April 16, 2018) is located between the fixed leader and the upper leader height to selectively determine the assembly length of the leader master The middle pulley assembly for guiding the hammer wire is assembled to the height adjusting leader of any one of the adjustment leaders, and the fixed guide bracket is welded to two outer circumferential surfaces of the height adjusting leader. Each of these fixing brackets has an intermediate pulley for guiding pile driver hammer wires equipped with a first pulley and a second pulley, which shorten the working distance of the hammer wire and reduce the length of use of the hammer wire. An assembly is disclosed.

However, the above-described conventional hammer wire guided pulley assembly has a problem that the rigidity of the leader must be increased because the two pulleys are fixed to the leader of the driving machine by welding, thereby increasing the manufacturing cost of the driving machine leader. there is a problem. In addition, there is a problem that the middle pulley itself is a fixed structure with respect to the leader is subject to the limitation of the work range.

Korea Patent Publication No. 10-1851105 (Registration date April 16, 2018)

An object of the present invention is to solve the problems according to the prior art of the anti-taking, the intermediate carriage for anti-taking hammer of the improved structure to be rotatable in a predetermined range on the upper end of the hammer auxiliary reader provided on one side of the anti-taking leader To provide.

In order to achieve the above object, the intermediate carriage for anti-hitting hammer according to the present invention is equipped with a guide roller for guiding the wire connected to the hammer mounted on the auxiliary leader disposed on one side of the leader for guiding the auger at the top. In the intermediate pulley for driving hammer,

It includes a body having two plate members spaced apart from each other and rotatably mounted on both sides of the guide rollers,

The body is rotatably mounted relative to a fixed part fixed at the top of the auxiliary leader,

The fixing part is fixed at the upper end of the auxiliary reader and a fixed block formed with a groove on the side, rotatably disposed on the outer circumferential surface of the fixed block, the base member formed on the lower end of the body including a ring member formed with a groove, the upper side of the ring member Is fixed in the body with the ring member is configured to be rotatable relative to the fixed block.

In the two guide rollers rotatably mounted to guide the wire between the plate members at both ends of the body, it is preferable to further include a wire escape preventing means to prevent the wire from being separated by shaking during the hammer operation. Do.

The wire detachment preventing means is formed by the width of the plate member of the two body is fixed at both ends of the lower end of the side cover fixed to prevent the separation of the wire between the plate members on both sides of the body and the fixed plate fixed to the lower portion of the plate members Including spaced side guide pins, a wire is maintained between the guide pins.

The wire detachment preventing means may further include at least one upper guide pin having both ends fixed to the plate members at an upper side of the guide roller between the plate members at both upper portions of the body.

A projection projecting upwardly from the upper surface of the outer end of the fixed block and an upper surface of the fixed block so as to limit the rotation angle of the base portion provided at the lower end of the body of the intermediate pulley with respect to the fixed block on the upper side of the auxiliary leader in a preset range; A stopper is provided that includes a protrusion formed to protrude downward from the bottom of the outer end of the base portion of the lower body.

According to the present invention by providing a middle pulley to guide the wire connected to the top of the hammer on the top of the auxiliary leader for guiding the hammer, it is possible to minimize excessive slack of the wire during the operation of the hammer, the intermediate pulley of the wire The wire separation prevention means is provided to prevent the wire from being separated from the guide roller by the impact during hammer operation, improving safety, and the simple structure makes it possible to install the intermediate pulley on the upper side of the auxiliary leader. There is an effect that can reduce the manufacturing cost.

1 is a schematic front view of a conventional cruiser.
Figure 2 is a schematic front view of the anti-taking equipped with an intermediate pulley for anti-taking hammer on the upper side in accordance with the present invention.
Figure 3 is a plan view schematically showing that the auxiliary leader for hammer is mounted on one side of the leader in FIG.
4 is a view showing that the middle pulley is installed on the upper side of the auxiliary leader to guide the wire for hammer hammer in FIG.
5 is a partially enlarged view showing that the middle pulley is installed on the upper side of the auxiliary leader in FIG.
6 is a perspective view of the middle pulley of FIG.
Figure 7 is a plan view schematically showing that the intermediate pulley installed on the upper side of the auxiliary leader can be rotated in a limited range.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings showing an embodiment of an intermediate pulley for anti-taking hammer according to the present invention.

2 to 5, in driving, the hammer 28 is mounted on one side of the leader 10 for guiding the auger 11 at the top, and the hammer 28 is raised and lowered at the top of the auxiliary leader 20 for guiding the hammer. Intermediate pulley 30 to be mounted.

As shown schematically in FIG. 3, the auxiliary reader 20 is connected by a conventional connecting means 25 on one side of the leader 10, and by the auger's screw by the operation of the cylinder as the connecting means. After drilling, the auxiliary reader is turned to the working position for hammer operation.

The intermediate pulley 30 according to the present invention includes a fixing part 31 fixed at an upper end of the auxiliary leader 20, a body 32 rotatably mounted at an upper side of the fixing part, and wires at both ends of the body. Two guide rollers 33 for guiding 34, and wire escape preventing means for preventing the wires from being released from the guide rollers 33 by shaking during the hammer operation.

The body 32 includes two plate members 321 spaced apart from each other and fixed to each other, as shown in FIGS. 5 to 7, and guide rollers 33 between the plate members 321 at both ends of the body. ) Is rotatably mounted by the shaft 331, and a side cover 322 is fixed between the plate members 321 on both sides to prevent the wire from being detached, as will be described later, at both ends. .

The fixing part 31 is a fixing block 23 is fixed by fastening with a bolt 22 on the support plate 21 fixed by welding at the upper end of the auxiliary reader 20, and the outer peripheral surface of the fixing block 23 And a ring member 311 rotatably disposed at the side of the fixing block 23, and a recess 231 is formed, and the ring member 311 is also provided at an inner side surface opposite to the recess 231. A groove 312 is formed and ball bearings 40 are provided in the opposed grooves 231 and 312.

The base portion 36 on which the lower end of the body 32 is fixed by welding or the like is fixed to a plurality of bolts 313 on the upper side of the ring member 311 to the fixing block 23 together with the ring member 311. In this case, the rotation angle of the base portion 36 to which the lower end of the body 32 is fixed does not collide with the leader 10 in consideration of the distance from the leader 10 located at the side of the auxiliary reader 20. It can be implemented by the stopper schematically shown in FIG. 5 to be limited in the range set in advance to the range.

As shown in the cross-sectional view of FIG. 5, the stopper includes a protrusion 51 protruding upward from the upper surface of the outer end of the fixed block 23, and a lower end of the body opposite to the upper surface of the fixed block 23. And a protrusion 52 formed to protrude downward from the bottom of the outer end of the base portion 36, and the protrusions 51 and 52 are shown to be spaced apart from each other in FIG. 5 because they are spaced apart at an angle. The angle between the 51 and 52 is formed at a position corresponding to the rotation range indicated by the virtual line in FIG. Thereby, the occurrence of a safety accident due to excessive rotation of the body can be prevented.

In addition, both ends of the wire separation preventing means together with the side cover 322, the plate member 321 at the upper side of the guide roller 33 between the plate member 321 at both upper portions of the body 32. At least one fixed, in the illustrated embodiment three upper guide pins 351, the lower end of the side cover 322 fixed to the plate member 321 on both sides of the body 32 and the body of both sides Side guide pins 325 spaced apart by the width of the plate member 321 of the two body is fixed to the fixed plate 323 fixed to the lower portion of the plate member 321.

Thus, when the wire 34 is guided by the guide roller 33 and types the concrete pile by the hammer, the upper guide provided between the plate members 321 of the body 32 even if the wire is swung by the impact. By the pin 351, the side guide pin 325 and the side cover 322, the wire 34 is maintained without leaving the guide roller 33.

The middle pulley according to the present invention is mounted on the upper end of the auxiliary leader 20 for guiding the hammer, and the length of the wire 34 connected to the hammer is compared to the length of the wire for raising and lowering the hammer by installing a pulley on the upper end of the conventional leader. It can be relatively largely reduced, so that the hammering of the wire is greatly reduced when the hammer types the concrete pile, and in the auxiliary pulley, the wire is not released from the guide roller by the upper and lateral guide pins 351 and 325. It remains stable to improve hammering accuracy and safety.

The present invention can be used to improve the safety of a navigator performing a type work of a concrete pile by a hammer with a perforation by an auger.

10: Reader 11: Augusta
20: auxiliary leader 21: support plate
22: fixed block 221: groove
28 hammer 30 middle pulley
31: fixing part 311: ring member
312: groove 32: body
321: plate member 33: guide roller
34: wire 36: base portion

Claims (5)

In the intermediate carriage for anti-taking hammer provided with a guide roller for guiding the wire connected to the hammer mounted on the auxiliary leader 20 disposed on one side of the leader 10 for guiding the auger 11 at the top,
It includes a body 32 having two plate members 321 spaced apart from each other and rotatably mounted with guide rollers 33 on both sides.
The body 32 is rotatably mounted with respect to the fixing part 31 provided on the upper side of the auxiliary reader 20,
The fixing part 31 is coupled to the support plate 21 fixed to the upper end of the auxiliary reader 20 and the fixing block 23, the groove 231 is formed on the side, rotatably on the outer peripheral surface of the fixing block 23 A base portion 36 having a lower end of the body 32 fixed to the upper portion of the ring member 311 is disposed and includes a ring member 311 having a recess 311 formed therein. Middle pulley structure for a hammer hit hammer, characterized in that the body 32 is rotatable relative to the fixed block (23).
The method of claim 1,
In the two guide rollers 33 rotatably mounted to guide the wire 34 between the plate members 321 at both ends of the body 32, the wire is separated by shaking during the hammer operation. The intermediate pulley structure for a hammer hit hammer, characterized in that it further comprises a wire escape prevention means.
The method of claim 2,
The wire detachment preventing means is fixed to the lower end of the side cover 322 fixed to prevent the separation of the wire between the plate member 321 on both sides of the body 32 and the bottom of the plate member 321 Anti-hitting hammer, characterized in that the wire is held between the guide pins 325, including the side guide pins 325 spaced apart by the width of the plate member 321 of the two bodies fixed to both ends) Middle pulley structure.
The method of claim 3, wherein
At least one upper guide pin 351 having both ends fixed to the plate members 321 at the upper side of the guide roller 33 between the plate members 321 at both upper portions of the body 32. An intermediate pulley structure for a hammer ride hammer, characterized in that it further comprises.
The method according to any one of claims 2 to 4,
In order to limit the rotation angle of the base portion 36 provided at the bottom of the body 32 of the intermediate pulley with respect to the fixed block 23 on the upper side of the auxiliary leader 20 in a preset range, A stopper including a protrusion 51 protruding upward from the upper surface and a protrusion 52 protruding downward from the bottom of the outer end of the base portion 36 of the lower end of the body opposite to the upper surface of the fixing block 23. An intermediate pulley structure for a hammer, characterized in that 50 is provided.

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