Water-saving environment-friendly hydraulic thread self-locking device

Abstract

The utility model provides a kind of water utilization environmental protection hydraulic thread self-locking device, including plunger, the left cylinder is slidably installed in one end of plunger and forms first oil cavity, plunger other end sealing sliding installation has right cylinder and forms second oil cavity;Left cylinder and right cylinder are connected by stud bolt between, and the spring compression mechanism for compressing left cylinder and right cylinder is installed in both ends of stud bolt;Oil passage structure is provided on plunger, and oil passage structure is connected with first oil cavity and second oil cavity respectively in communication;The outer surface of left cylinder and right cylinder is machined with external thread.This self-locking device adopts half formula, and the structure form of reliable pitch, and then when needing locking, by high-pressure oil is passed into to open two half cylinder, so that the external thread on cylinder and internal thread are in full contact, prevent the generation of gap, and finally guarantee the locking reliability of both, and then guarantee the security of self-locking.

Description

Technical Field

[0001] This utility model relates to the field of ship lift safety technology, and in particular to a water-utilizing environmentally friendly hydraulic thread self-locking device. Background Technology

[0002] To ensure the safe operation of ship lifts, a nut and safety screw are typically used as a locking mechanism to prevent safety risks caused by the descent of the ship compartment due to sudden shutdown. For example, CN119618093A discloses a device and method for detecting the thread clearance of a ship lift's accident safety mechanism. In this installation mechanism, an integral safety screw rotates synchronously within the nut, achieving synchronous lifting. The pitch of the installation screw in this self-locking structure is fixed. During locking, it relies primarily on the external thread of the safety screw and the internal thread of the nut for support and locking. Since the pitch of the safety screw cannot be adjusted, a certain gap will exist between the external thread of the safety screw and the internal thread of the nut when locking is required, leading to unreliable locking. Utility Model Content

[0003] The purpose of this invention is to provide a water-saving and environmentally friendly hydraulic thread self-locking device to address the above-mentioned problems. This self-locking device adopts a split-type structure with reliable thread pitch, which ensures that when locking is required, high-pressure oil is introduced to expand the two halves of the cylinder, allowing the external and internal threads on the cylinder to fully contact each other, preventing gaps, and ultimately ensuring the reliability of the locking and thus guaranteeing the safety of the self-locking.

[0004] To achieve the above-mentioned technical features, the purpose of this utility model is as follows: a water-utilizing environmentally friendly hydraulic threaded self-locking device includes a plunger, one end of which is slidably mounted on a left cylinder body to form a first oil chamber, and the other end of which is slidably and sealed on a right cylinder body to form a second oil chamber; the left and right cylinder bodies are connected by a double-ended screw, and spring clamping mechanisms for pressing the left and right cylinder bodies are installed at both ends of the double-ended screw; an oil passage structure is provided on the plunger, and the oil passage structure is connected to the first and second oil chambers respectively; external threads are machined on the outer surfaces of the left and right cylinder bodies.

[0005] Preferably, multiple first sealing rings and second sealing rings are respectively provided between the two ends of the left cylinder and the plunger.

[0006] Preferably, multiple third and fourth sealing rings are provided at both ends of the right cylinder block, corresponding to the plunger.

[0007] Preferably, an end face flange is fixedly installed on the outer end of the right cylinder.

[0008] Preferably, the spring clamping mechanism includes springs symmetrically mounted on a double-ended screw, with the inner ends of the springs contacting and limiting the mounting cavities of the left and right cylinders respectively, and the outer ends of the springs contacting a circular pressure plate, which is fixed and limited by a nut mounted on the double-ended screw.

[0009] Preferably, the oil passage structure includes a first oil passage and a second oil passage machined on the plunger, the first oil passage being connected to a first oil cavity, and the second oil passage being connected to a second oil cavity;

[0010] The first oil passage and the second oil passage are connected to the hydraulic pump station and supply oil to the first oil chamber and the second oil chamber respectively to drive the left cylinder and the right cylinder to open.

[0011] Preferably, the contact surfaces of the left cylinder and the right cylinder are provided with a first telescopic sealing structure. The first telescopic sealing structure includes a middle bellows. One end of the middle bellows is pressed and fixed to the end of the left cylinder by a first clamp, and the other end of the middle bellows is pressed and fixed to the end of the right cylinder by a second clamp.

[0012] Preferably, a second telescopic sealing structure is provided between the outer end face of the left cylinder and the plunger. The second telescopic sealing structure includes an end face bellows. One end of the end face bellows is fixed to the outer end face of the left cylinder by an annular pressure plate, and the other end of the end face bellows is fixed to the outer surface of the plunger by a third clamp.

[0013] Preferably, the first oil passage adopts a U-shaped structure.

[0014] Preferably, the second oil passage has a through structure.

[0015] The present invention has the following beneficial effects:

[0016] 1. The self-locking device of this utility model adopts a split-type structure with reliable pitch, which ensures that when locking is required, the two halves of the cylinder are expanded by introducing high-pressure oil, so that the external and internal threads on the cylinder are in full contact, preventing the generation of gaps, and ultimately ensuring the reliability of the locking of the two, thereby ensuring the safety of self-locking.

[0017] 2. The first and second sealing rings described above can be used to achieve a seal between the left cylinder and the plunger.

[0018] 3. The third and fourth sealing rings mentioned above can be used to achieve a seal between the right cylinder block and the plunger.

[0019] 4. The aforementioned end flange is used to connect to the drive unit, thereby driving the right cylinder to rotate. This, in turn, causes the external and internal threads of both the left and right cylinders to engage.

[0020] 5. The spring clamping mechanism described above can be used to achieve a tight fit and lock between the left and right cylinder blocks in a natural state, thereby ensuring that the two form a complete external thread.

[0021] 6. The first oil passage and the second oil passage can supply oil to the first oil chamber and the second oil chamber respectively, thereby providing the opening power.

[0022] 7. The first telescopic sealing structure described above can be used to seal the contact surfaces of the left and right cylinder blocks.

[0023] 8. The second telescopic sealing structure described above can be used to seal the contact surfaces of the left and right cylinder blocks. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] Figure 1 This is a cross-sectional view of the overall structure of this utility model.

[0026] Figure 2 This is a structural diagram of the present utility model.

[0027] Figure 3 This utility model Figure 2 Enlarged view of part A in the middle.

[0028] Figure 4 This utility model Figure 2 Enlarged view of part B in the middle.

[0029] Figure 5 This is the front view of the present utility model.

[0030] Figure 6 This is a cross-sectional view of the plunger of this utility model.

[0031] Figure 7 This is a diagram showing the left and right cylinder blocks of this utility model in their open state.

[0032] In the diagram: 1. Plunger; 2. Bellows on end face; 3. Double-ended screw; 4. Nut; 5. Circular pressure plate; 6. Spring; 7. Left cylinder body; 8. Middle bellows; 9. Right cylinder body; 10. End face flange; 11. First sealing ring; 12. First oil chamber; 13. Second sealing ring; 14. Fourth sealing ring; 15. Second oil chamber; 16. Mounting cavity; 17. First clamp; 18. Second clamp; 19. Third clamp; 20. Third sealing ring; 21. Circular pressure plate; 22. External thread; 23. Second oil passage; 24. First oil passage. Detailed Implementation

[0033] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0034] See Figure 1-7A water-saving and environmentally friendly hydraulic threaded self-locking device includes a plunger 1. A left cylinder 7 is slidably mounted at one end of the plunger 1, forming a first oil chamber 12. A right cylinder 9 is slidably mounted at the other end of the plunger 1, forming a second oil chamber 15. The left cylinder 7 and right cylinder 9 are connected by a double-ended screw 3, with spring clamping mechanisms installed at both ends of the double-ended screw 3 for pressing the left cylinder 7 and right cylinder 9 together. The plunger 1 has an oil passage structure that communicates with the first oil chamber 12 and the second oil chamber 15 respectively. External threads 22 are machined on the outer surfaces of the left cylinder 7 and right cylinder 9. This self-locking device adopts a half-and-half configuration of the left cylinder 7 and right cylinder 9 with a reliable thread pitch. This ensures that when locking is required, high-pressure oil is introduced to open the left cylinder 7 and right cylinder 9, allowing the external threads 22 on the cylinders to fully contact the internal threads, preventing gaps and ultimately ensuring the reliability of the locking mechanism, thus guaranteeing the safety of the self-locking mechanism.

[0035] Furthermore, multiple first sealing rings 11 and second sealing rings 13 are respectively provided between the two ends of the left cylinder body 7 and the plunger 1. The aforementioned first sealing rings 11 and second sealing rings 13 can be used to achieve a seal between the left cylinder body 7 and the plunger 1.

[0036] Furthermore, multiple third sealing rings 20 and fourth sealing rings 14 are respectively provided between the two ends of the right cylinder body 9 and the plunger 1. The aforementioned third sealing rings 20 and fourth sealing rings 14 can be used to achieve a seal between the right cylinder body 9 and the plunger 1.

[0037] Furthermore, an end face flange 10 is fixedly installed on the outer end of the right cylinder body 9. The end face flange 10 is used to connect with the drive device, thereby driving the right cylinder body 9 to rotate. This, in turn, causes the external threads 22 of the entire left cylinder body 7 and the right cylinder body 9 to engage with the internal threads.

[0038] Furthermore, the spring clamping mechanism includes springs 6 symmetrically mounted on the double-ended screw 3. The inner ends of the springs 6 contact and limit the mounting cavities 16 of the left cylinder 7 and the right cylinder 9, respectively, while the outer ends of the springs 6 contact the annular pressure plate 5. The annular pressure plate 5 is fixed and limited by a nut 4 mounted on the double-ended screw 3. This spring clamping mechanism enables the left cylinder 7 and the right cylinder 9 to be locked together in their natural state, ensuring that they form a complete external thread 22. The compression of the springs 6 provides clamping force to the left cylinder 7 and the right cylinder 9, and the nut 4 can be used to adjust the magnitude of the clamping force. Simultaneously, the studs prevent relative rotation between the left cylinder 7 and the right cylinder 9.

[0039] Furthermore, the oil passage structure includes a first oil passage 24 and a second oil passage 23 machined on the plunger 1. The first oil passage 24 is connected to the first oil chamber 12, and the second oil passage 23 is connected to the second oil chamber 15. Oil can be supplied to the first oil chamber 12 and the second oil chamber 15 respectively through the first oil passage 24 and the second oil passage 23, thereby providing opening power.

[0040] Furthermore, the first oil passage 24 and the second oil passage 23 are connected to a hydraulic pump station, and supply oil to the first oil chamber 12 and the second oil chamber 15 respectively to drive the left cylinder 7 and the right cylinder 9 to open. The aforementioned hydraulic pump station can be used to provide hydraulic power.

[0041] Furthermore, the contact surfaces of the left cylinder block 7 and the right cylinder block 9 are provided with a first telescopic sealing structure. This first telescopic sealing structure includes a central bellows 8. One end of the central bellows 8 is pressed and fixed to the end of the left cylinder block 7 by a first clamp 17, and the other end of the central bellows 8 is pressed and fixed to the end of the right cylinder block 9 by a second clamp 18. This first telescopic sealing structure can be used to seal the contact surfaces of the left cylinder block 7 and the right cylinder block 9, thereby effectively preventing oil leakage and subsequent water and soil pollution.

[0042] Furthermore, a second telescopic sealing structure is provided between the outer end face of the left cylinder 7 and the plunger 1. This second telescopic sealing structure includes an end-face bellows 2. One end of the end-face bellows 2 is fixed to the outer end face of the left cylinder 7 by an annular pressure plate 21, and the other end is fixed to the outer surface of the plunger 1 by a third clamp 19. This second telescopic sealing structure can be used to seal the contact surfaces of the left cylinder 7 and the right cylinder 9, effectively preventing oil leakage and subsequent water and soil pollution.

[0043] Furthermore, the first oil passage 24 adopts a U-shaped structure. The U-shaped structure allows high-pressure oil to be introduced into the first oil chamber 12.

[0044] Furthermore, the second oil passage 23 adopts a through-type structure. By adopting a through-type structure, it can be used to introduce high-pressure oil into the second oil chamber 15.

[0045] Furthermore, when the left cylinder block 7 and the right cylinder block 9 are joined together, the externally machined external thread 22 is a continuous structure, see... Figure 5 As shown, it rotates perfectly in conjunction with the nut column.

[0046] The specific working process and principle of this utility model are as follows:

[0047] When oil enters through the oil port, plunger 1 remains stationary. High-pressure oil enters through the first oil chamber 12 and the second oil chamber 15. The hydraulic pressure overcomes the preload of spring 6, driving the left cylinder 7 to move to the left and the right cylinder 9 to move to the right. At this time, the left cylinder 7 and the right cylinder 9 disengage, and the threads on the cylinders are no longer a continuous structure until the gap between the external threads of the cylinders and the internal threads of the nut is completely eliminated, thereby achieving reliable locking and fixation of the two. See Figure 7 As shown, the oil circuit is closed at this time, and the entire cylinder stops operating due to the threaded locking. The volume of the first oil chamber 12 and the second oil chamber 15 increases, and the spring 6 is further compressed. The end bellows 2 is compressed due to the relative displacement between the plunger 1 and the left cylinder 7, and the middle bellows 8 is expanded due to the displacement between the left cylinder 7 and the right cylinder 9. At this time, even if there is hydraulic oil leakage, it will be collected by the bellows and will not affect the environment.

Claims

1. A water-utilizing environmentally friendly hydraulic threaded self-locking device, characterized in that, The plunger (1) is slidably mounted on one end of the plunger (1) to form a first oil chamber (12), and a right cylinder (9) is slidably mounted on the other end of the plunger (1) to form a second oil chamber (15). The left cylinder (7) and the right cylinder (9) are connected by a double-ended screw (3), and spring clamping mechanisms for pressing the left cylinder (7) and the right cylinder (9) are installed at both ends of the double-ended screw (3). An oil passage structure is provided on the plunger (1), and the oil passage structure is connected to the first oil chamber (12) and the second oil chamber (15) respectively. The outer surfaces of the left cylinder (7) and the right cylinder (9) are machined with external threads (22).

2. The water-utilizing environmentally friendly hydraulic threaded self-locking device according to claim 1, characterized in that: The two ends of the left cylinder (7) are respectively provided with a first sealing ring (11) and a second sealing ring (13) between the plunger (1).

3. The water-utilizing environmentally friendly hydraulic threaded self-locking device according to claim 1, characterized in that: The two ends of the right cylinder (9) are respectively provided with a third sealing ring (20) and a fourth sealing ring (14) between the piston (1).

4. The water-utilizing environmentally friendly hydraulic threaded self-locking device according to claim 1, characterized in that: The outer end of the right cylinder (9) is fixedly fitted with an end face flange (10).

5. The water-utilizing environmentally friendly hydraulic threaded self-locking device according to claim 1, characterized in that: The spring clamping mechanism includes springs (6) symmetrically mounted on the double-ended screw (3). The inner end of the spring (6) contacts and limits the mounting cavity (16) of the left cylinder (7) and the right cylinder (9) respectively. The outer end of the spring (6) contacts the annular pressure plate (5). The annular pressure plate (5) is fixed and limited by the nut (4) mounted on the double-ended screw (3).

6. The water-utilizing environmentally friendly hydraulic threaded self-locking device according to claim 1, characterized in that: The oil passage structure includes a first oil passage (24) and a second oil passage (23) machined on the plunger (1). The first oil passage (24) is connected to the first oil chamber (12), and the second oil passage (23) is connected to the second oil chamber (15). The first oil passage (24) and the second oil passage (23) are connected to the hydraulic pump station and supply oil to the first oil chamber (12) and the second oil chamber (15) respectively to drive the left cylinder (7) and the right cylinder (9) to open.

7. The water-utilizing environmentally friendly hydraulic threaded self-locking device according to claim 1, characterized in that: The contact surfaces of the left cylinder (7) and the right cylinder (9) are provided with a first telescopic sealing structure. The first telescopic sealing structure includes a middle bellows (8). One end of the middle bellows (8) is pressed and fixed to the end of the left cylinder (7) by a first clamp (17), and the other end of the middle bellows (8) is pressed and fixed to the end of the right cylinder (9) by a second clamp (18).

8. The water-utilizing environmentally friendly hydraulic threaded self-locking device according to claim 1, characterized in that: A second telescopic sealing structure is provided between the outer end face of the left cylinder (7) and the plunger (1). The second telescopic sealing structure includes an end face bellows (2). One end of the end face bellows (2) is fixed to the outer end face of the left cylinder (7) by an annular pressure plate (21), and the other end of the end face bellows (2) is fixed to the outer surface of the plunger (1) by a third clamp (19).

9. The water-utilizing environmentally friendly hydraulic threaded self-locking device according to claim 6, characterized in that: The first oil passage (24) adopts a U-shaped structure.

10. The water-utilizing environmentally friendly hydraulic threaded self-locking device according to claim 6, characterized in that: The second oil passage (23) adopts a through structure.

Images