Positioning pin dismounting device for ship maintenance

Abstract

The utility model belongs to the technical field of auxiliary equipment for ship maintenance, and particularly relates to a positioning pin dismounting device for ship maintenance. The device comprises a steel sleeve, a traction lead screw, a traction nut, a connector and a knocking device, the traction nut is connected to the top of the traction lead screw in a threaded mode, the traction lead screw is sleeved with the sleeve, the sleeve is located below the traction nut, the outer diameter of the traction nut is larger than the diameter of the sleeve, and the knocking device is arranged on the traction nut. An inner screw hole is formed in the top of the connector, the bottom end of the traction lead screw is connected into the inner screw hole in the top of the connector in a threaded mode, and the bottom end of the connector is connected with the pin. The device is used for disassembling common positioning pins with different sizes and internal threads or external threads.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of auxiliary equipment for ship maintenance, especially a positioning pin dismounting device for repairing ships. BACKGROUND

[0002] The combination of pin and bolt is usually used for the connection and positioning between the parts of machinery, and the common pin includes cylindrical pin and conical pin, which is matched with the hinge hole to ensure the assembly accuracy. However, these positioning pins must be removed by using special tools. The existing special tools are mainly of the pull-out type structure, such as the technical solution with the patent number 201710492879.X, which has a relatively single function and a large size, and cannot be removed according to the predetermined pull-out force. In particular, the positioning pin of the deck machinery of the ship is large in size, is installed at multiple positions in a closed and narrow space, and is seriously corroded, so it is difficult to pull out the positioning pin from the pin hole of the flange plate, and the work cannot be effectively carried out. SUMMARY

[0003] The utility model provides a positioning pin dismounting device for repairing ships, which is used for dismounting the commonly used positioning pins with internal threads or external threads of different sizes.

[0004] The utility model solves the above technical problems through the following technical scheme,

[0005] A positioning pin dismounting device for repairing ships, comprising a steel sleeve, a traction lead screw, a traction nut, a connecting head and a knocking device, the traction nut is screwed on the top of the traction lead screw, the sleeve is sleeved outside the traction lead screw, the sleeve is located below the traction nut, the outer diameter of the traction nut is larger than the diameter of the sleeve, the top of the connecting head is provided with an internal screw hole, the bottom end of the traction lead screw is screwed into the internal screw hole of the top of the connecting head, and the bottom end of the connecting head is connected with the positioning pin.

[0006] The above-mentioned positioning pin dismounting device for repairing ships is also provided with a thrust bearing, the thrust bearing is sleeved outside the traction lead screw, and the thrust bearing is arranged between the sleeve and the traction nut.

[0007] The above-mentioned positioning pin dismounting device for repairing ships is also provided with a hammering mechanism, the hammering mechanism comprises a motor, a knocking hammer, a connecting chain and a connecting block, the connecting block is connected with the output shaft of the motor, the motor drives the connecting block to rotate, the two ends of the connecting chain are fixedly connected with the connecting block and the knocking hammer respectively, a long hole is formed in the side wall of the sleeve, and the knocking hammer can knock the traction lead screw through the long hole.

[0008] The above-mentioned positioning pin dismounting device for repairing ships is provided with a plurality of connecting heads, the connecting head is in the shape of a rod, and the bottom end of the connecting head is provided with an internal screw hole or an external thread matched with the positioning pin to be dismounted.

[0009] Compared with the prior art, the volume of the utility model is small and convenient to carry, can be applicable to various commonly used standard positioning pins, the degree of standardization is high, convenient to combine and replace, not only can control the traction force through the wrench torque, but also can additional external force impact removal positioning pin under the basis of keeping the traction force, can well protect the positioning pin and the pin hole, reduce the workload of the later maintenance and new positioning pin, improve the work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 is the structure schematic view of the utility model;

[0011] Figure 2 is the internal structure schematic view of the utility model;

[0012] Figure 3 is Figure 1 the local enlarged view of A part in

[0013] Figure 4 is the use state diagram of the utility model.

[0014] The marks in the drawing represent: 1. sleeve, 2. traction screw, 3. traction nut, 4. connector, 5. knocking device, 6. thrust bearing, 7. motor, 8. knocking hammer, 9. connecting chain, 10. connecting block, 11. long hole. DETAILED DESCRIPTION

[0015] The specific implementation of the utility model is described in further detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model.

[0016] As Figures 1 to 4The utility model discloses a steel sleeve 1, traction lead screw 2, traction nut 3, connector 4 and knocking device 5, traction nut 3 is screwed in the top of traction lead screw 2, the sleeve 1 is covered in traction lead screw 2 outside, the sleeve 1 is located the below of traction nut 3, the outer diameter of traction nut 3 is greater than the diameter of sleeve 1, the top of connector 4 is equipped with internal thread hole, the bottom end of traction lead screw 2 is screwed in the internal thread hole of the top of connector 4, the bottom end of connector 4 is connected with the pin. The top of the positioning pin to be removed on the current ship can be provided with internal thread or external thread, through the above setting, according to the actual positioning pin to be removed, select the matching connector 4, screw the top end of connector 4 with traction lead screw 2, screw the bottom end of connector 4 with the positioning pin, the bottom end of sleeve 1 is inserted against traction nut 3 flange, the top end of sleeve 1 is against traction nut 3, then through spanner rotation traction nut 3, can make traction lead screw 2 and traction nut 3 relative rotation, because sleeve 1 is against between traction nut 3 and flange, thereby rotates outwards to traction nut 3, finally pulls out the positioning pin flange.

[0017] In order to save labor, also be equipped with thrust bearing 6, the thrust bearing 6 is covered in traction lead screw outside, the thrust bearing 6 is equipped between sleeve 1 and traction nut 3, like this can change the sliding friction between traction nut 3 and sleeve 1 into rolling friction, easily rotate traction nut 3.

[0018] Because there will be rust between the positioning pin and the pin hole of flange, lead to the positioning pin very difficult to pull out. The utility model still sets up hammer mechanism, the hammer mechanism includes motor 7, knock hammer 8, connecting chain 9 and connecting block 10, the connecting block 10 is connected with the output shaft of motor 7, the motor 7 drives the connecting block 10 rotation, the both ends of connecting chain 9 are fixed with connecting block 10 and knock hammer 8 respectively, the side wall of sleeve 1 is equipped with long hole 11, knock hammer 8 can knock on traction lead screw 2 through long hole 11. Motor drives connecting block rotation, connecting chain is thrown up, makes that knock hammer hits on traction lead screw, knock hammer 8 knocks traction lead screw can make the positioning pin produce vibration, thereby drive the positioning pin to produce wobble in the pin hole. Benefit with the rusted positioning pin and the pin hole between separation, convenient for pulling out the positioning pin. Prevent hard removal or destructive removal, cause the waste of positioning pin.

[0019] In order to facilitate the matching of different positioning pins, the connector 4 is provided with several, the connector 4 is rod-shaped, the bottom end of the connector 4 is provided with an internal thread hole or an external thread matched with the positioning pin to be removed.

[0020] Working process: select the matched connector 4 according to the actual positioning pin to be removed, screw the top end of the connector 4 with the traction screw 2, screw the bottom end of the connector 4 with the positioning pin, the bottom end of the sleeve 1 is inserted against the flange plate of the traction nut 3, the top end of the sleeve 1 is against the traction nut 3, then rotate the traction nut 3 through the wrench, the traction screw 2 can rotate relative to the traction nut 3, since the sleeve 1 is against the traction nut 3 and the flange plate, the traction is rotated outwards to the traction nut 3, finally the positioning pin is pulled out of the flange plate, then rotate the positioning pin, and the positioning pin can be removed from the connector 4.

[0021] The above only is the preferred embodiment of the present application, it should be pointed out that, for ordinary skilled in the art, without departing from the technical principles of the present application, can make a number of improvements and variations, these improvements and variations should also be considered as the protection scope of the present application.

Claims

1. A device for removing locating pins for ship repair, characterized in that, The device includes a steel sleeve (1), a traction screw (2), a traction nut (3), a connector (4), and a striking device (5). The traction nut (3) is screwed onto the top of the traction screw (2). The sleeve (1) is fitted over the traction screw (2) and is located below the traction nut (3). The outer diameter of the traction nut (3) is larger than the diameter of the sleeve (1). The connector (4) has an internal thread hole at its top. The bottom end of the traction screw (2) is screwed into the internal thread hole at the top of the connector (4). The bottom end of the connector (4) is connected to the positioning pin.

2. The locating pin removal device for ship repair as described in claim 1, characterized in that, A thrust bearing (6) is also provided, which is sleeved on the outside of the traction screw and is located between the sleeve (1) and the traction nut (3).

3. The locating pin removal device for ship repair as described in claim 2, characterized in that, A hammering mechanism is also provided, which includes a motor (7), a hammer (8), a connecting chain (9) and a connecting block (10). The connecting block (10) is connected to the output shaft of the motor (7). The motor (7) drives the connecting block (10) to rotate. The two ends of the connecting chain (9) are fixed to the connecting block (10) and the hammer (8) respectively. The sleeve (1) has an elongated hole (11) on its side wall. The hammer (8) passes through the elongated hole (11) and can strike the traction screw (2).

4. The locating pin removal device for ship repair as described in claim 3, characterized in that, The connector (4) is provided in several parts. The connector (4) is rod-shaped. The bottom end of the connector (4) is provided with an internal thread or external thread that matches the positioning pin to be removed.

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