Screw hydraulic stretching device of steering engine cylinder cover

Abstract

The utility model discloses a hydraulic screw stretching device of a steering engine cylinder cover, which comprises a hydraulic screw stretching device body, the hydraulic screw stretching device body comprises a support cylinder, and the top of the support cylinder is fixedly connected with a piston; firstly, the tension screw is rotated to the surface of the stop bolt, so that the inner wall of the tension screw is fixed to the surface of the stop bolt, then the surface of the tension screw is sleeved with the supporting cylinder, whether the bottom of the supporting cylinder corresponds to a round hole formed in the surface of the stop nut or not is checked, and then the tension screw is fixed. The operation facilitates subsequent tightening or dismounting of the stop nut, then the first O-shaped ring and the second O-shaped ring are installed in the inner cavity of the piston in sequence, one side of the first O-shaped ring and one side of the second O-shaped ring make close contact with the inner wall of the main body, and the effect of facilitating installation and dismounting is achieved. The problem that a cylinder cover, a static blade and a cylinder body in an existing rotating blade type steering engine are inconvenient to install is solved.

Description

Technical Field

[0001] The utility model relates to a device for a steering gear cylinder cover, in particular to a screw hydraulic stretching device for the steering gear cylinder cover, belonging to the technical field of ship equipment. Background Art

[0002] The working principle of the screw hydraulic tensioning device mainly relies on the hydraulic cylinder to apply external force to the bolt. When the hydraulic cylinder is working, high-pressure oil is sent into the piston cylinder through the high-pressure hose, pushing the piston upward, and then driving the tensioning nut to move upward. Since the tensioning nut is threadedly connected to the working bolt, it can stretch the working bolt and cause it to produce elastic deformation. This deformation determines the clamping force required to tighten the bolt. When the bolt is stretched, the contact surface between the nut and the flange will separate, which is convenient for subsequent nut rotation and bolt tightening or disassembly operations.

[0003] The main body of the screw hydraulic stretching device is usually composed of a hydraulic pump, a high-pressure hose, a pressure gauge and a stretching body. Among them, the hydraulic pump serves as the power source and provides high-pressure oil for the entire system. The high-pressure hose is responsible for connecting the hydraulic pump and the stretching body, transmitting hydraulic oil and pressure. However, at present, the three main parts of the rotary vane servo, the cylinder head, the stator and the cylinder body, need to be connected together by long bolts. Since the total height of the three parts is generally more than one meter, there is a certain difficulty in how to install them when connecting them with these long bolts. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the shortcomings of the existing technology and provide a screw hydraulic stretching device for a steering gear cylinder cover which has a reasonable structure, is easy to use, stable and safe, so as to solve the problem that the cylinder cover, stationary vanes and cylinder body in the current rotary vane steering gear are inconvenient to install.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a screw hydraulic stretching device for a steering gear cylinder cover, comprising a screw hydraulic stretching device body, the screw hydraulic stretching device body comprising a support cylinder, a piston fixedly connected to the top of the support cylinder, a mother body movably connected to the surface of the piston, and a fixing mechanism provided in the inner cavity of the support cylinder;

[0006] The fixing mechanism includes a tension screw, the top of the tension screw surface is threadedly connected to the inner cavity of the mother body, the inner cavity of the tension screw is threadedly connected to a stop bolt, the surface of the stop bolt is threadedly connected to a stop nut, the inner cavity of the stop bolt is inserted with an insertion rod, the top of the insertion rod is fixedly connected to a circular block, and the top of the circular block is fixedly connected to the top of the inner cavity of the tension screw.

[0007] Furthermore, a hand pump connector is provided on the surface of the mother body, and the hand pump connector is circular in shape.

[0008] Furthermore, a screw plug is provided on the surface of the mother body, and an oil plug is connected to the internal thread of the screw plug.

[0009] Furthermore, a disassembly groove is provided on the top of the tension screw, and the shape of the disassembly groove is hexagonal.

[0010] Furthermore, the inner cavity of the piston is movably connected to a first O-ring and a second O-ring, and one side of the first O-ring and the second O-ring are in close contact with the inner wall of the mother body.

[0011] Furthermore, a tightening groove is provided at the bottom of the support tube, and the tightening groove is located on the outside of the stop nut.

[0012] Furthermore, the surface of the stop nut is provided with six circular holes.

[0013] Compared with the prior art, the utility model adopts the above technical solution and has the following advantages: the utility model first rotates the tension screw to the surface of the stop bolt, so that the inner wall of the tension screw is fixed to the surface of the stop bolt, and then the support tube is sleeved on the surface of the tension screw, and checks whether the bottom of the support tube corresponds to the circular hole opened on the surface of the stop nut. This operation facilitates the subsequent tightening or disassembly of the stop nut, and solves the problem of inconvenient installation between the cylinder cover, stationary blades and cylinder body in the current rotary vane servo. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The technical solution of the present invention is further described in detail below with reference to the accompanying drawings:

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the screw plug and oil plug structure of the utility model;

[0017] Figure 3 This is a schematic cross-sectional view of the support tube and tension screw of the present invention;

[0018] Figure 4 For the utility model Figure 3 Schematic diagram of the enlarged structure at A in the middle;

[0019] Figure 5 For the utility model Figure 3 Schematic diagram of the enlarged structure at point B in the middle.

[0020] Description of the drawings: 1. Screw hydraulic stretching device body; 101. Support cylinder; 102. Piston; 103. Mother body; 2. Fixing mechanism; 201. Tension screw; 202. Round block; 203. Insert rod; 204. Stop bolt; 205. Stop nut; 3. Hand pump connector; 4. Screw plug; 5. First O-ring; 6. Second O-ring; 7. Oil plug; 8. Disassembly groove; 9. Tightening groove; 10. Round hole. DETAILED DESCRIPTION

[0021] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] The following is combined with Figure 1-5 To further explain this application,

[0023] The embodiment of the present application discloses a screw hydraulic stretching device for a steering gear cylinder cover. Figure 1-5 A screw hydraulic stretching device for a steering gear cylinder cover includes a screw hydraulic stretching device body 1, the screw hydraulic stretching device body 1 includes a support cylinder 101, a piston 102 is fixedly connected to the top of the support cylinder 101, a mother body 103 is movably connected to the surface of the piston 102, and a fixing mechanism 2 is provided in the inner cavity of the support cylinder 101;

[0024] The fixing mechanism 2 includes a tension screw 201, the top of the surface of the tension screw 201 is threadedly connected to the inner cavity of the mother body 103, the inner cavity of the tension screw 201 is threadedly connected to a stop bolt 204, the surface of the stop bolt 204 is threadedly connected to a stop nut 205, the inner cavity of the stop bolt 204 is inserted with an insertion rod 203, the top of the insertion rod 203 is fixedly connected to a circular block 202, and the top of the circular block 202 is fixedly connected to the top of the inner cavity of the tension screw 201.

[0025] Reference Figure 1 and Figure 3 A hand pump connector 3 is provided on the surface of the mother body 103. The hand pump connector 3 is circular in shape. Through the setting of the hand pump connector 3, when the stop bolt 204 needs to be stretched, the hand hydraulic cylinder is connected to the hand pump connector 3 and pressurized. The hydraulic oil enters the inner cavity of the mother body 103 and stretches the stop bolt 204 upward. At this time, the stop nut 205 can be removed and fixed;

[0026] Reference Figure 2The surface of the mother body 103 is provided with a screw plug 4, and the internal thread of the screw plug 4 is connected to the oil plug 7. The setting of the oil plug 7 limits the hydraulic oil inside the mother body 103 to prevent the hydraulic oil from flowing out of the inside of the screw plug 4. When it is necessary to discharge the excess gas inside the mother body 103, just unscrew the oil plug 7;

[0027] Reference Figure 2 and Figure 3 A disassembly groove 8 is provided on the top of the tension screw 201. The disassembly groove 8 is hexagonal in shape. By setting the disassembly groove 8, the tension screw 201 can be fixed with the help of an external tool, a hexagonal wrench. When the stretching is completed, the tension screw 201 can be removed from the inner wall of the mother body 103 using the hexagonal wrench.

[0028] Reference Figure 4 and Figure 5 The inner cavity of the piston 102 is movably connected to a first O-ring 5 and a second O-ring 6. One side of the first O-ring 5 and the second O-ring 6 is in close contact with the inner wall of the mother body 103. The first O-ring 5 and the second O-ring 6 cooperate to form a closed cavity in the inner cavity of the mother body 103, thereby preventing the hydraulic oil from leaking from the bottom of the mother body 103.

[0029] Reference Figure 1 The bottom of the support tube 101 is provided with a tightening groove 9, which is located on the outside of the stop nut 205. Through the setting of the tightening groove 9, when the stop bolt 204 is stretched, the stop nut 205 can be tightened or removed from here with the help of a tool;

[0030] Reference Figure 1 There are six circular holes 10 on the surface of the stop nut 205. Through the setting of the circular holes 10, the stop nut 205 can be tightened or disassembled. When the stop bolt 204 is stretched to the appropriate position, the stop nut 205 can be easily screwed.

[0031] The working principle of this embodiment: When using the screw hydraulic stretching device body 1, first rotate the tensioning screw 201 to the surface of the stop bolt 204, so that the inner wall of the tensioning screw 201 is fixed to the surface of the stop bolt 204, and then the support cylinder 101 is sleeved on the surface of the tensioning screw 201, and check whether the bottom of the support cylinder 101 corresponds to the circular hole 10 opened on the surface of the stop nut 205. This operation facilitates the subsequent tightening or disassembly of the stop nut 205, and then install the first O-ring 5 and the second O-ring 6 in the inner cavity of the piston 102 in sequence, and make one side of the first O-ring 5 and the second O-ring 6 closely contact with the inner wall of the mother body 103. Through the coordinated use of the first O-ring 5 and the second O-ring 6, a closed inner cavity of the mother body 103 is formed. cavity, thereby preventing the hydraulic oil from leaking from the bottom of the mother body 103, and then threading the mother body 103 to the top of the surface of the tension screw 201, and check whether the connection between the piston 102 and the mother body 103 is sealed. After confirming that the connection between the piston 102 and the mother body 103 is in a sealed state, connect the hand pump to the hand pump connector 3. At this time, remove the oil plug 7 from the inner cavity of the mother body 103 and exhaust the interior of the mother body 103. After the exhaust is completed, re-thread the oil plug 7 to the inner cavity of the mother body 103 and pump the correct pressure. At this time, the mother body 103 is lifted up, and the movement of the mother body 103 drives the tension screw 201 to move. The movement of the tension screw 201 stretches the stop bolt 204. When the stop bolt 204 is stretched, tighten the stop nut 205.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A screw hydraulic stretching device for a steering gear cylinder cover, comprising a screw hydraulic stretching device body (1), characterized in that: The screw hydraulic stretching device body (1) comprises a support cylinder (101), the top of the support cylinder (101) is fixedly connected to a piston (102), the surface of the piston (102) is movably connected to a mother body (103), and the inner cavity of the support cylinder (101) is provided with a fixing mechanism (2); The fixing mechanism (2) includes a tension screw (201), the top of the surface of the tension screw (201) is threadedly connected to the inner cavity of the mother body (103), the inner cavity of the tension screw (201) is threadedly connected to a stop bolt (204), the surface of the stop bolt (204) is threadedly connected to a stop nut (205), the inner cavity of the stop bolt (204) is plugged with an insertion rod (203), the top of the insertion rod (203) is fixedly connected to a circular block (202), and the top of the circular block (202) is fixedly connected to the top of the inner cavity of the tension screw (201).

2. The screw hydraulic stretching device for a steering gear cylinder cover according to claim 1, characterized in that: A hand pump connector (3) is provided on the surface of the mother body (103), and the hand pump connector (3) is circular in shape.

3. The screw hydraulic stretching device for a steering gear cylinder cover according to claim 1, characterized in that: A screw plug (4) is provided on the surface of the mother body (103), and an oil plug (7) is connected to the inner thread of the screw plug (4).

4. The screw hydraulic stretching device for a steering gear cylinder cover according to claim 1, characterized in that: A disassembly groove (8) is provided on the top of the tension screw (201), and the disassembly groove (8) is hexagonal in shape.

5. The screw hydraulic stretching device for a steering gear cylinder cover according to claim 1, characterized in that: The inner cavity of the piston (102) is movably connected to a first O-ring (5) and a second O-ring (6), and one side of the first O-ring (5) and the second O-ring (6) are in close contact with the inner wall of the mother body (103).

6. The screw hydraulic stretching device for a steering gear cylinder cover according to claim 1, characterized in that: A tightening groove (9) is provided at the bottom of the support tube (101), and the tightening groove (9) is located outside the stop nut (205).

7. The screw hydraulic stretching device for a steering gear cylinder cover according to claim 1, characterized in that: The surface of the stop nut (205) is provided with circular holes (10), and the number of the circular holes (10) is six.

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