JP3190603U - Unpinning tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pin pulling tool which has good workability at the time of pin pulling and can easily cope with pins of various modes including small size and large size pin pulling. SOLUTION: The pin pulling tool 21 is suitable for pulling out a pin inserted in a tooth board or the like attached to a construction machine, and has a rectangular end surface 3a on one end side which is brought into contact with a small-sized pin. A contact portion 3 is formed, a striking portion 5 having a bulging spherical shape is formed on the end surface 5a on the other end side, and an elastic grip material 4 with a non-slip is attached to the outer periphery between the pin contact portion 3 and the striking portion 5. A first pin extraction portion 1 connected by a main body portion 2 that also serves as a grip portion, and a pin contact portion 12 having a rectangular rod-shaped large-dimensional rectangular end surface 12a that abuts a large-dimensional pin on one end side are formed. The intersection angle θ of the center lines of the first pin punching portion 1 and the second pin punching portion 11 is the second pin punching portion 11 in which the striking portion 13 having a bulging spherical shape is formed on the end surface 13a on the other end side. It is cross-connected in a manner that makes an obtuse angle. [Selection diagram] Fig. 1

Description

  The present invention relates to a pin removal tool, and more specifically, for example, a pin removal tool suitable for use in extracting a pin inserted in a tooth machine or the like attached to a construction machine having a bucket such as a backhoe and having good operability. It is about.

  For example, in a construction machine such as a backhoe for excavating the ground or the like, a tooth machine is attached to a bucket using a pin, and a pin inserted into the tooth machine is removed as necessary to replace the tooth machine.

  Conventionally, for example, a pin pulling tool 60 as shown in FIG. 10 is known as a pin pulling tool for use in pulling out a pin interposed between the bucket and the tooth board.

  The pin removing tool 60 shown in the figure crosses a first pin extracting portion 61 for extracting a small pin having a long overall length and a second pin extracting portion 62 for extracting a large pin having a short entire length in a cross shape. In addition to the connection, a grip handle 63 that is longer than the first pin extraction portion 61 is connected to the connection portion by welding or the like in an arrangement perpendicular to both the first pin extraction portion 61 and the second pin extraction portion 62. However, it is configured in a trifurcated manner as a whole.

  In the case of this conventional pinning tool 60, although it can be used in two modes of small dimension pin extraction and large dimension pin extraction, it has a three-pronged structure having a handle 63 longer than the first pin extraction portion 61. As a result, the entire structure is bulky, and is complicated during storage and transportation.

  In view of the problems of the prior art, the present applicant has previously proposed and registered a pinning tool as shown in Patent Document 1.

  In the pin removal tool of Patent Document 1, a pin contact portion having a small-sized rectangular end surface to be contacted with a small-sized pin is formed on one end side, and a hitting portion having a bulging spherical shape is formed on the end surface on the other end side. Forming a first pin-extracted portion in which the main body portion also serves as a handle, and forming a pin abutting portion having a rectangular rod shape with a large-sized rectangular end surface to be brought into contact with a large-sized pin on one end side, and an end surface on the other end side And a second pin punched portion formed with a hitting portion having a bulging spherical shape is cross-connected in a cross shape.

Registered Utility Model No. 3139903

  The present invention relates to the improvement of the pinning tool that the applicant of the present application previously proposed and obtained, and has a simple configuration, is not bulky, and has good workability during pin removal. In addition, it can easily cope with various types of pin extraction, including extraction of small-sized pins and large-sized pins, and further improves the workability and safety of workers when extracting large-sized pins. It provides a pinning tool that can be improved.

  The present invention is a pin removal tool suitable for extracting a pin inserted into a tooth board or the like attached to a construction machine having a bucket such as a backhoe, and is applied to a small-sized pin to be extracted on one end side. A pin abutting portion to be contacted is formed, a hitting portion is formed on the end surface on the other end side, a first pin pulling portion connected between the pin abutting portion and the hitting portion by a main body portion also serving as a grip portion, and one end side Forming a pin abutting portion that abuts on a large-sized pin to be extracted, and a second pin extracting portion having a hitting portion on the other end side end surface, the first pin extracting portion, the second pin extracting It is characterized in that the crossing angle of each center line of the part is an obtuse angle, and has a simple configuration, is not bulky, has good workability at the time of pin removal, and is capable of removing small-sized pins and Various types including pin removal of large dimensions A main body portion that also can serve as a grip portion of the first pin pull-out portion when the pin abutment portion of the second pin pull-out portion is in contact with a large-sized pin that is to be extracted; The most important feature is that the pin abutting portion is disposed obliquely upward with respect to the second pin-exited portion so that a sufficient gap is generated between the pin abutting portion and the like.

  According to the first aspect of the present invention, it has a simple configuration, is not bulky, has good workability at the time of pin extraction, and has various aspects including pin extraction of small dimensions and pin extraction of large dimensions. When the pin abutting portion of the second pin extracting portion is in contact with a large-sized pin to be extracted, the main body portion that also serves as the grip portion of the first pin extracting portion and the pin holder Since the contact portion is arranged obliquely upward with respect to the second pin-out portion and generates a sufficient gap between the tooth board and the like, the operator's left hand (in the case of left-handed, conversely Is removed between the main body and the upper surface of the large-sized tooth board, and the inconvenience that the left hand is injured can be avoided, thereby improving the work safety. Can realize and provide .

  According to the second aspect of the invention, in addition to having the same effect as the first aspect of the invention, in addition to having a main body portion that also serves as a grip portion with an anti-slip elastic grip material attached to the outer periphery, It is possible to realize and provide a pinning tool that can perform the pinning operation safely and with good workability without sliding the left hand (in the case of left-handed) from the main body portion of the first pinning portion.

  According to the third aspect of the invention, in addition to the same effects as the first aspect of the invention, both the first pin punched portion and the second pin punched portion are equally sized from the intersecting portion. Since it is configured to be cross-connected in a projecting manner, each hitting part can be hit with the same hitting feeling when properly using the first pin pulling part and the second pin pulling part. It is possible to realize and provide a pin removal tool capable of improving workability at the time of pin removal.

  According to the invention described in claim 4, while having the effect of the invention described in any one of claims 1 to 3, the length of the main body portion of the first pin-extracted portion is equal to the total length of the first pin-extracted portion. A pin removal tool that can secure a sufficient gripping area when an operator grips the main body with one hand by configuring approximately 1/3, and from this point, can also improve the workability of the pinning work. Can be realized and provided.

It is a front view of the pinning tool which concerns on the Example of this invention. It is a top view of the pinning tool which concerns on a present Example. It is a bottom view of the pinning tool which concerns on a present Example. It is a rear view of the pinning tool which concerns on a present Example. It is a left view of the pinning tool which concerns on a present Example. It is a right view of the pinning tool which concerns on a present Example. It is a schematic perspective view which shows the use aspect which extracts the pin of a small dimension with the pin extraction tool which concerns on a present Example. It is a schematic perspective view which shows the use aspect which extracts a large dimension pin with the pin extraction tool which concerns on a present Example. It is expansion explanation in the case of extracting a large dimension pin with the pin extraction tool concerning a present Example. It is a perspective view which shows an example of the conventional pinning tool.

  Although the present invention has a simple configuration, it does not become bulky, has good workability when removing pins, and it can be used for various types of pins such as small-sized pins and large-sized pins. A tooth attached to a construction machine having a bucket such as a backhoe for the purpose of providing a pin removal tool that can easily cope with extraction and that can further improve the operability and safety of an operator when extracting large-sized pins. A pin removal tool suitable for extracting pins inserted into a board or the like, and forming a pin contact portion having a small-sized rectangular end surface to be contacted with a small-sized pin to be extracted on one end side And the other end side end surface is formed with a hitting portion having a bulging spherical shape, and the main body also serves as a grip portion in which an elastic grip material with a slip stopper is mounted on the outer periphery between the pin contact portion and the hitting portion And a pin abutting portion having a rectangular rod shape with a large rod end to be brought into contact with a large pin to be extracted on one end side, and bulging on the other end side end surface. A second pin-extracted portion formed with a hitting portion having a spherical shape, and cross-coupled in such a manner that the crossing angle of each center line of the first pin-extracted portion and the second pin-extracted portion is an obtuse angle, It has a simple configuration, does not bulk, has good workability during pin removal, and can easily handle various types of pin extraction including small-sized pin extraction and large-sized pin extraction. When the pin contact portion of the second pin pull-out portion is brought into contact with a large-sized pin to be extracted, the main body portion and the pin contact portion having the non-slip elastic grip material of the first pin pull-out portion mounted on the outer periphery , Facing diagonally upward with respect to the second pin-out part It realized by and configured to generate a sufficient clearance between the arrangement and makes the tooth block and the like.

  Hereinafter, a pinning tool according to an embodiment of the present invention will be described in detail with reference to the drawings.

  As shown in FIGS. 1 to 6, the pinning tool 21 according to the present embodiment includes a first pinning portion 1 having a long total length L1 and a second pinning portion 11 having a short total length L2 (L1> L2). For example, the cross-connecting is performed in such a manner that the crossing angle θ of the center lines of the first pinning part 1 and the second pinning part 11 is an obtuse angle by molding.

  The intersection angle θ is set to about 95 to 130 degrees, for example, but is not limited to this angle.

The first pin pull-out part 1 forms a pin abutting part 3 having a small-sized rectangular end face 3a to be brought into contact with a small-sized pin 41 to be extracted on one end side, and bulges on an end face 5a on the other end side. A grip in which a hitting portion 5 having a protruding spherical surface is formed, and an elastic grip material 4 with anti-slip having an uneven portion formed of, for example, an elastic rubber material is provided between the pin contact portion 3 and the hitting portion 5 on the outer periphery. They are connected by a main body 2 that also serves as a part.
In addition, about the said elastic grip material 4 with a slip stopper, it shows with a dashed-two dotted line in FIG. 1 thru | or 4, and shows a specific structure in FIG. 9 mentioned later.

  The second pin pull-out portion 11 includes a rectangular rod-shaped pin contact portion 12 having a rectangular end surface 12a larger in size than the rectangular end surface 3a to be brought into contact with a large-size pin 41A to be extracted on one end side. The striking portion 13 having a bulging spherical shape is formed on the end surface 13a on the other end side.

  As shown in FIG. 1, the hitting part 5 and the hitting part 13 are configured to protrude outward from the central part O of the intersecting portion of the first pin pulling part 1 and the second pin pulling part 11 with equal dimensions. .

  That is, when the pinning tool 21 according to the present embodiment performs a pinning operation using each of the first pinning part 1 and the second pinning part 11, the first pinning part 1 itself. The main body 2 is configured to function as a grip for gripping.

  In the pinning tool 21 according to the present embodiment, as described above, the crossing angle θ is set to, for example, about 95 to 130 degrees, so that the pin contact portion 12 of the second pinning portion 11 is set. When the main body 2 and the pin abutting portion 3, which also serve as the grip portion of the first pin pull-out portion 1, contact the second pin pull-out portion 11 obliquely upward. It is arranged to face.

  Further, in the pinning tool 21 according to the present embodiment, the length L3 of the main body 2 serving also as the grip part of the first pinning part 1 is set to approximately 1/3 of the total length L1 of the first pinning part 1. When the operator grips the main body 2 with one hand, a sufficient gripping area can be secured.

  Next, a specific usage example of the pinning tool 21 according to the present embodiment will be described with reference to FIGS. 7, 8, and 9.

  In the pinning tool 21 according to the present embodiment, the operator uses the first pinning unit 1 to pull out a small-sized pin 41 inserted into a pin hole of the tooth board 40, for example, as shown in FIG. When holding, the hammer 50 is held in the right hand 51 (reverse when left-handed), and the non-slip elastic gripping material 4 of the first pin removal part 1 is attached with the left hand 52 (reverse when left-handed) The small-sized rectangular end surface 3a of the first pin pull-out portion 1 is brought into contact with the upper end of the pin 41 of the tooth board 40, and in this state, the first pin pull-out portion is held by the hammer 50. The hitting part 5 at 1 is hit.

  As a result, the second pinning portion 11 is positioned on the upper side of the operator's left hand (the hand that holds the pinning tool 21) 52, so that the worker strikes his / her left hand 52. Without feeling danger, the small-sized pin 41 inserted through the pin hole of the tooth board 40 can be simply extracted to the end.

  On the other hand, as shown in FIGS. 8 and 9, the operator uses the second pin pull-out portion 11 to insert a large-sized pin 41 </ b> A that is inserted into the pin hole of the larger-sized tooth board 40 </ b> A than the tooth machine 40. In order to remove the elastic grip material, the hammer 50 is held in the right hand 51 (reverse when left-handed) and the left pin 52 (reverse when left-handed) is the anti-slip elastic gripping material of the first pin-extracted portion 1. The main body 2 with 4 is gripped, and the large-sized rectangular end surface 12a of the second pin pull-out portion 11 is brought into contact with the upper end of the pin 41A of the tooth board 40A. In this state, the second pin pull-out is performed by the hammer 50. The hitting part 13 in the part 11 is hit.

  After that, when the pin 41A is loosened, the first pin punching portion 1 is used until the pin 41A is completely pulled out as a gripping mode of the pin punching tool 21 similar to the case shown in FIG. The hitting part 5 at 1 is hit.

As a result, as in the case described above, the operator simply pulls out the large-sized pin 41A inserted through the pin hole of the tooth board 40A to the end without feeling the danger of hitting his / her left hand 52. Can do.

  Further, when an operator uses the second pin extraction portion 11 to extract the large-sized pin 41A, the crossing angle θ is set to about 95 to 130 degrees, for example, as shown in FIG. Therefore, the main body portion 2 and the pin contact portion 3 with the anti-slip elastic grip material 4 of the first pin pull-out portion 1 are disposed so as to face obliquely upward with respect to the second pin pull-out portion 11. Become.

  As a result, a sufficient gap S is generated between the upper surface of the large-sized tooth board 40A and the main body 2, so that the operator's left hand 52 (which is reversed in the case of left-handed) is larger than the main body 2. The situation of being pinched between the upper surface of the tooth board 40A having the dimensions is eliminated, and an inconvenient situation that the left hand 52 is injured can be avoided, and the work safety is improved.

  According to the pinning tool 21 according to the above-described embodiment, the first pinning part 1 having the long total length L1 and the second pinning part 11 having the short total length L2 are cross-connected with the crossing angle θ. Therefore, the overall configuration is flattened and simplified compared to the conventional three-pronged pinning tool 60, and does not become bulky, which is extremely convenient for storage and transportation.

  In addition, by properly using the first pin extraction part 1 and the second pin extraction part 11, it is possible to easily cope with various types of pin extraction including a small dimension pin extraction and a large dimension pin extraction.

  Furthermore, since the main body portion 2 with the non-slip elastic grip material 4 of the first pin-out portion 1 is configured to function as a grip portion for gripping, the operator can use his left hand 52 (pin-out portion). Without removing the risk of hitting the hand holding the tool), and without removing the left hand 52 from the main body portion 2 of the first pinning portion 1, the pinning operation can be performed safely and with good workability. Can be executed.

  Further, since the hitting portion 5 and the hitting portion 13 protrude outwardly with equal dimensions from the central portion O of the intersecting portion of the first pin-extracted portion 1 and the second pin-extracted portion 11, the first pin-extracted portion The hitting part 5 or the hitting part 13 can be hit with the same hitting feeling while holding the main body part 2 of the part 1, and also from this point, workability at the time of extracting the pin 41 or the pin 41A is improved. It becomes good.

  In the above-described embodiment, the case where the pin contact portions 3 and 12 having the rectangular end surfaces 3a and 12a are provided on the first pin removal portion 1 and the second pin removal portion 11 has been described. The shapes of the rectangular end faces 3a and 12a of the portions 3 and 12 are not limited to this, and various modifications such as a circular shape or an elliptical shape are possible.

  The pin removal tool of the present invention can be widely applied to various parts that require insertion, attachment, or removal of pins, such as mechanical parts of various machine tools and automobiles.

DESCRIPTION OF SYMBOLS 1 1st pin extraction part 2 Main body part 3 Pin contact part 3a Rectangular end surface 4 Elastic grip material with a slip prevention 5 Tapping part 5a End surface 11 2nd pin extraction part 12 Pin contact part 12a Rectangular end surface 13 Tapping part 13a End surface 21 Pin Punching tool 40 tooth machine 40A tooth machine 41 pin 41A pin 50 hammer 51 right hand (reverse if left-handed)
52 Left hand (reverse if left-handed)
L1 Total length L2 Total length L3 Length O Intersection center S S Gap θ Cross angle

Claims (4)

It is a pin removal tool suitable for use in extracting a pin inserted in a tooth machine or the like attached to a construction machine having a bucket such as a backhoe,
A main body that forms a pin abutting portion that abuts a small-sized pin to be extracted on one end side, forms a hitting portion on the end surface on the other end, and also serves as a grip portion between the pin abutting portion and the hitting portion A first pin-out portion connected by a portion;
Forming a pin abutting portion to be brought into contact with a large-sized pin to be extracted on one end side and forming a hitting portion on the end surface on the other end side;
Are cross-connected in such a manner that the crossing angle of each center line of the first pinning part and the second pinning part is an obtuse angle,
It has a simple configuration, does not bulk, has good workability during pin removal, and can easily handle various types of pin extraction including small-sized pin extraction and large-sized pin extraction. When the pin contact portion of the second pin pull-out portion comes into contact with a large-sized pin to be extracted, the main body portion and the pin contact portion that also serve as the grip portion of the first pin pull-out portion become the second pin pull-out portion. On the other hand, the pinning tool is arranged so as to face obliquely upward, and is configured to generate a sufficient gap between the tooth board and the like. It is a pin removal tool suitable for use in extracting a pin inserted in a tooth machine or the like attached to a construction machine having a bucket such as a backhoe,
A pin contact portion having a small-sized rectangular end surface to be brought into contact with a small-sized pin to be extracted is formed on one end side, and a hitting portion having a bulging spherical shape is formed on the other end-side end surface. A first pin-extracted portion connected by a main body portion also serving as a grip portion in which an elastic grip material with anti-slip is attached to the outer periphery between the contact portion and the hitting portion;
A pin abutting portion having a rectangular rod shape with a large size rectangular end surface to be brought into contact with a large size pin to be extracted is formed on one end side, and a hitting portion having a bulging spherical shape is formed on the end surface on the other end side. A second unpinned portion;
Are cross-connected in such a manner that the crossing angle of each center line of the first pinning part and the second pinning part is an obtuse angle,
It has a simple configuration, does not bulk, has good workability during pin removal, and can easily handle various types of pin extraction including small-sized pin extraction and large-sized pin extraction. When the pin contact portion of the second pin pull-out portion is brought into contact with a large-sized pin to be extracted, the main body portion and the pin contact portion having the non-slip elastic grip material of the first pin pull-out portion mounted on the outer periphery A pinning tool characterized in that it is arranged obliquely upward with respect to the second pinning part and is configured to generate a sufficient gap with the tooth board or the like. It is a pin removal tool suitable for use in extracting a pin inserted in a tooth machine or the like attached to a construction machine having a bucket such as a backhoe,
A round bar-shaped part and a rectangular bar-shaped part are continuously formed on one end side, and a pin abutting part having a small-sized rectangular end surface to be brought into contact with a pin to be extracted with a small dimension is formed. A first pin-extracted portion having a long overall length formed by forming a hitting portion having a spherical shape, and connecting the pin contact portion and the hitting portion by a main body portion that also serves as a grip portion having an anti-slip elastic grip material attached to the outer periphery. When,
A full length in which a rectangular bar-shaped pin abutting portion having a large-sized rectangular end surface to be brought into contact with a large-sized pin to be extracted is formed on one end side, and a hitting portion having a bulging spherical shape is formed on the other end-side end surface A short second pin-extracted portion,
That the crossing angle of the center line of each of the first pin-extracted portion and the second pin-extracted portion is an obtuse angle, and the two hitting portions are cross-connected in such a manner that each of the hit portions protrudes from the crossing portion to an equal dimension As a feature,
It has a simple configuration, does not bulk, has good workability during pin removal, and can easily handle various types of pin extraction including small-sized pin extraction and large-sized pin extraction. When the pin contact portion of the second pin pull-out portion is brought into contact with a large-sized pin to be extracted, the main body portion and the pin contact portion in which the elastic grip material with anti-slip of the first pin pull-out portion is mounted on the outer periphery However, the pinning tool is arranged so as to face obliquely upward with respect to the second pinning portion, and generates a sufficient gap with the tooth board or the like.   The length of the main body portion of the first pin-extracted portion is about 1/3 of the total length of the first pin-extracted portion. tool.

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