Tool for taking out pin shaft of hydraulic oil cylinder

Abstract

The utility model discloses a hydraulic oil cylinder pin shaft taking-out tool which comprises a pin shaft body and a pin shaft taking-out mechanism used for taking out the pin shaft body, the pin shaft taking-out mechanism comprises a steel pipe, an iron plate, a bolt and a nut, the iron plate is fixedly welded to the bottom of the steel pipe, a cylindrical inner cavity is formed in the steel pipe, and an insertion hole in the vertical direction is formed in the bottom of the iron plate. The end, located inside the inserting hole, of the bolt penetrates through the cylindrical inner cavity to be connected with the pin shaft body, the outer side of the end, located outside the iron plate, of the bolt is in threaded connection with a nut, the end of the iron plate is integrally connected with a mounting plate, counter bores are symmetrically formed in the surface of the mounting plate, and the outer diameter of the pin shaft body is smaller than the diameter of the cylindrical inner cavity. According to the hydraulic oil cylinder pin shaft taking-out tool, the bolt can be connected with the pin shaft body in a screwing mode, then the rotating nut is controlled, the bolt is made to move downwards, and therefore the pin shaft can be taken out rapidly, the maintenance time is shortened, and safe and stable operation of a fire grate is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of pin removal, in particular to a hydraulic cylinder pin removal tool. Background Technique

[0002] The hydraulic cylinder is an important transmission device of a mechanical reciprocating grate furnace. The cylinder and the grate boom are connected by a pin. After long-term operation under high temperature and heavy load, the pin is prone to wear, affecting the operation of the grate. At this time, the pin needs to be replaced. Since the clearance between the pin and the bushing is small and the working space is limited, the pin can only be replaced after cutting off the old pin, which is time-consuming and laborious and affects the operation of the equipment. Therefore, we propose a hydraulic cylinder pin removal tool. Content of the Utility Model

[0003] The purpose of the utility model is to provide a hydraulic cylinder pin removal tool to solve the problems raised in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A hydraulic cylinder pin removal tool, including a pin body and a pin removal mechanism for removing the pin body. The pin removal mechanism includes a steel pipe, an iron plate, a bolt and a nut. The bottom of the steel pipe is welded and fixed with the iron plate. A cylindrical inner cavity is arranged in the steel pipe. A vertical jack is opened at the bottom of the iron plate. A bolt is connected in the jack in a matching manner. One end of the bolt located inside the jack passes through the cylindrical inner cavity and is connected with the pin body. A nut is threadedly connected to the outside of the end of the bolt located outside the iron plate.

[0005] Preferably, an installation plate is integrally connected to the end of the iron plate, and counterbored holes are symmetrically opened on the surface of the installation plate.

[0006] Preferably, the outer diameter of the pin body is smaller than the diameter of the cylindrical inner cavity.

[0007] Preferably, the length of the steel pipe is greater than the length of the pin body.

[0008] Preferably, screw holes are opened at both corresponding ends of the pin body, and the end of the bolt passes through the cylindrical inner cavity and is threadedly connected in the screw holes.

[0009] Preferably, the sum of the lengths of the cylindrical inner cavity, the nut and the jack is less than the length of the bolt.

[0010] Preferably, a wrench is arranged outside the nut.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The utility model can be tightly connected to the pin shaft body through bolts, and then by controlling the rotating nut, the bolts move downward, so that the pin shaft can be quickly removed, reducing the maintenance time and ensuring the safe and stable operation of the grate.

[0013] 2. The utility model is provided with a steel pipe, and the diameter of the inner cavity of the cylinder is set larger than the diameter of the pin shaft body, so that the removed pin shaft body can be collected inside the steel pipe, avoiding the situation of the pin shaft body falling.

[0014] 3. The utility model can block the bottom of the steel pipe through the setting of the iron plate, avoiding the situation of the pin shaft body collected inside the steel pipe falling.

[0015] 4. Through the mounting plate and counterbore holes provided on the iron plate, the utility model can fixedly install the pin shaft removal mechanism under the component of the pin shaft body, facilitating the removal operation of the pin shaft body. The overall structure is compact and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 is a schematic diagram of the component connection structure of the utility model;

[0018] Figure 3 is a schematic diagram of the overall structure of the utility model.

[0019] In the figure: 1. Pin shaft removal mechanism; 2. Steel pipe; 3. Pin shaft body; 4. Iron plate; 5. Jacking hole; 6. Inner cavity of the cylinder; 7. Bolt; 8. Screw hole; 9. Mounting plate; 10. Counterbore hole; 11. Nut. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-3 , the present utility model provides a technical solution: a hydraulic cylinder pin shaft removal tool, including a pin shaft body 3 and a pin shaft removal mechanism 1 for removing the pin shaft body 3.

[0022] The pin removal mechanism 1 includes a steel pipe 2, an iron plate 4, a bolt 7 and a nut 11. The iron plate 4 is welded and fixed to the bottom of the steel pipe 2. A cylindrical inner cavity 6 is provided inside the steel pipe 2. A vertically oriented insertion hole 5 is formed at the bottom of the iron plate 4. The bolt 7 is fitted and connected inside the insertion hole 5. One end of the bolt 7 located inside the insertion hole 5 passes through the cylindrical inner cavity 6 and is connected to the pin body 3. A nut 11 is threadedly connected to the outer side of the end of the bolt 7 located outside the iron plate 4.

[0023] It should be noted that when the present utility model is in use, first, the iron plate 4 is fixedly installed on the component below the pin through a countersunk screw, so that the cylindrical inner cavity 6 inside the steel pipe 2 corresponds to the pin body 3. The bolt 7 is passed through the insertion hole 5 in the iron plate 4 and the cylindrical inner cavity 6 in the steel pipe 2, and the end of the bolt 7 located outside the cylindrical inner cavity 6 is threadedly connected to the screw hole 8 at the end of the pin body 3. Then, a wrench is used to rotate the nut 11. Through the threaded connection between the nut 11 and the bolt 7, the bolt 7 moves downward, thereby pulling the pin body 3 downward until the pin body 3 is taken out and collected inside the steel pipe 2.

[0024] The end of the iron plate 4 is integrally connected with a mounting plate 9, and countersunk holes 10 are symmetrically formed on the surface of the mounting plate 9.

[0025] It should be noted that by fixing an iron plate 4 at the bottom of the steel pipe 2, the bottom of the steel pipe 2 can be blocked, preventing the pin body 3 collected inside the steel pipe 2 from falling. Through the mounting plate 9 and the countersunk holes 10 provided on the iron plate 4, the iron plate 4 can be fixedly installed at the position of the component below the pin body 3 through countersunk screws, making it easier to operate when removing the pin body 3.

[0026] The outer diameter of the pin body 3 is smaller than the diameter of the cylindrical inner cavity 6.

[0027] It should be noted that the diameter of the cylindrical inner cavity 6 inside the steel pipe 2 is set to be larger than the diameter of the pin body 3, so that the removed pin body 3 can be smoothly placed and collected inside the cylindrical inner cavity 6 of the steel pipe 2.

[0028] The length of the steel pipe 2 is greater than the length of the pin body 3.

[0029] It should be noted that setting the length of the steel pipe 2 to be greater than the length of the pin body 3, and the length of the steel pipe 2 being five centimeters longer than the length of the pin body 3, can enable the removed pin body 3 to be completely placed and collected inside the steel pipe 2.

[0030] Screw holes 8 are formed at both corresponding ends of the pin body 3, and the end of the bolt 7 passes through the cylindrical inner cavity 6 and is threadedly connected to the screw hole 8.

[0031] It should be noted that the end of the bolt 7 is threadedly connected inside the screw hole 8 on the pin shaft body 3, enabling the bolt 7 to be quickly connected to the pin shaft body 3, thus saving the removal time of the pin shaft body 3 and improving the replacement efficiency of the pin shaft body 3.

[0032] The sum of the lengths of the cylindrical inner cavity 6, the nut 11, and the jack 5 is less than the length of the bolt 7.

[0033] It should be noted that the sum of the lengths of the cylindrical inner cavity 6, the nut 11, and the jack 5 is set to be less than the length of the bolt 7, so that both ends of the bolt 7 are located outside the iron plate 4 and the steel pipe 2, enabling one end of the bolt 7 to be connected to the pin shaft body 3 and the other end of the bolt 7 to be connected to the nut 11. Thus, it is convenient to control the nut 11 with a wrench, causing the bolt 7 to pull the pin shaft body 3 and realizing the removal of the pin shaft body 3.

[0034] A wrench is provided outside the nut 11.

[0035] It should be noted that the wrench can be used to tighten the nut 11. Through the threaded connection between the bolt 7 and the nut 11, the bolt 7 moves downward, thereby pulling out the pin shaft body 3.

[0036] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0037] In addition, the terms "first", "second", "third", "fourth" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third", "fourth" may explicitly or implicitly include at least one of such features.

[0038] In the present invention, unless otherwise clearly defined and limited, the terms "installed", "set", "connected", "fixed", "swiveling connection", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. Unless otherwise clearly limited, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. Hydraulic cylinder pin removal tool, characterized in that, It includes a pin shaft body (3) and a pin shaft removal mechanism (1) for removing the pin shaft body (3). The pin shaft removal mechanism (1) includes a steel pipe (2), an iron plate (4), a bolt (7) and a nut (11). The bottom of the steel pipe (2) is fixedly welded with the iron plate (4). A cylindrical inner cavity (6) is arranged inside the steel pipe (2). A vertical insertion hole (5) is opened at the bottom of the iron plate (4). A bolt (7) is connected in the insertion hole (5) in a matching manner. One end of the bolt (7) located inside the insertion hole (5) passes through the cylindrical inner cavity (6) and is connected to the pin shaft body (3). A nut (11) is threadedly connected to the outside of one end of the bolt (7) located outside the iron plate (4).

2. The hydraulic cylinder pin removal tool according to claim 1, characterized in that: An installation plate (9) is integrally connected to the end of the iron plate (4), and counterbored holes (10) are symmetrically opened on the surface of the installation plate (9).

3. The hydraulic cylinder pin removal tool according to claim 1, characterized in that: The outer diameter of the pin shaft body (3) is smaller than the diameter of the cylindrical inner cavity (6).

4. The hydraulic cylinder pin removal tool according to claim 1, characterized in that: The length of the steel pipe (2) is greater than the length of the pin shaft body (3).

5. The hydraulic cylinder pin removal tool according to claim 1, characterized in that: Screw holes (8) are opened at both corresponding ends of the pin shaft body (3), and the end of the bolt (7) passes through the cylindrical inner cavity (6) and is threadedly connected in the screw holes (8).

6. The hydraulic cylinder pin removal tool according to claim 1, characterized in that: The sum of the lengths of the cylindrical inner cavity (6), the nut (11) and the insertion hole (5) is smaller than the length of the bolt (7).

7. The hydraulic cylinder pin removal tool according to claim 1, wherein: A wrench is arranged outside the nut (11).

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