Device and method for reducing on-load time of underwater hydraulic machine

Abstract

The invention discloses a device and method for reducing the load time of an underwater hydraulic machine, and belongs to the technical field of water conservancy and hydropower engineering metal structures. One end of a cantilever type supporting device serves as a fixed end and is fixedly installed on the gate pier wall faces on the two sides of a movable gate flap and / or the top of a frame, and the other end of the cantilever type supporting device serves as a supporting end; the support is used for supporting the bottom of the movable door flap. The traditional thought that the movable gate flap is pulled through the pulling force of an underwater hydraulic machine is avoided, the thought that the problem of fatigue effect caused by long-term loading of the underwater hydraulic machine is solved from the perspective of improving the reliability of the underwater hydraulic machine is also avoided, and the cantilever type supporting device is arranged on the wall face of the gate pier and / or the top of the frame. When the movable valve clack is in a full-open state, the cantilever type supporting device bears loads, then the underwater hydraulic machine can be in a pressure relief state, the loading time of the underwater hydraulic machine is shortened to a large extent, the probability of the fatigue effect of the underwater hydraulic machine is reduced, and the service life of the underwater hydraulic machine is effectively prolonged.

Description

Technical Field

[0001] The invention belongs to the technical field of metal structures of water conservancy and hydropower engineering, and particularly relates to a device and method for reducing the loading time of an underwater hydraulic press. Background Art

[0002] The stepless stratified water intake gate device includes more than two sections of gate leaf devices distributed up and down, each gate leaf device includes a frame, and a movable gate flap is hingedly installed on the frame. Each movable gate flap is driven to rotate around the hinge by a corresponding underwater hydraulic press.

[0003] Due to the reference flow requirement, the movable door flap is in the fully open state for a long time. When the movable door flap is in the fully open state, except for the lowest movable door flap which is supported by the bottom sill, the support of the remaining movable door flaps is completely supported by the cylinder pulling force of the underwater hydraulic press to pull the movable door flaps, which makes the underwater hydraulic press corresponding to these movable door flaps in a long-term loaded state, which will cause fatigue effect and affect the service life of the underwater hydraulic press. Therefore, the existing technology is still not perfect, and it is necessary to solve the problem that the movable door flap (excluding the lowest movable door flap, because the lowest movable door flap is supported by the bottom sill and will not affect the service life of the underwater hydraulic press) causes the underwater hydraulic press to be loaded for a long time when it is fully opened, causing fatigue effect. Summary of the invention

[0004] In view of this, the present invention provides a device and method for reducing the loading time of an underwater hydraulic press, which solves the problem that the underwater hydraulic press is loaded for a long time when the movable door flap is in a fully open state, which easily causes fatigue effects.

[0005] The device for reducing the loading time of an underwater hydraulic press provided by the present invention adopts the following technical solutions:

[0006] A device for reducing the load-carrying time of an underwater hydraulic press, comprising: more than two door leaf devices distributed up and down, each door leaf device comprising a frame, a movable door flap hinged to the frame, an underwater hydraulic press driving the movable door flap to rotate, and a cantilever support device;

[0007] One end of the cantilever support device serves as a fixed end, which is fixedly mounted on the gate pier wall on both sides of the movable gate flap and / or the top of the frame, and the other end serves as a supporting end, which is used to support the bottom of the movable gate flap.

[0008] Furthermore, an elastic buffer is provided on the supporting end for supporting the bottom of the movable door flap.

[0009] Furthermore, the elastic buffer is provided with a supporting plane for supporting the bottom of the movable door flap.

[0010] Furthermore, the support end is also provided with an arc-shaped shell;

[0011] The elastic buffer is arc-shaped and is installed on the outer side of the arc-shaped housing.

[0012] Further, the cantilever support device comprises an inner cylinder, an outer cylinder, a support pad and a reinforcing rib;

[0013] One end of the inner cylinder is coaxially sleeved in the outer cylinder and fixedly connected to the outer cylinder through the reinforcing ribs; the other end of the inner cylinder serves as the fixed end;

[0014] The outer cylinder serves as the arc-shaped shell, the support pad serves as the elastic buffer, and the support pad is installed on the outer wall of the outer cylinder.

[0015] Furthermore, the cantilever support device comprises an inner cylinder, a fan-shaped body, a support pad and a reinforcing rib;

[0016] One end of the inner cylinder is fixedly connected to the fan-shaped body through the reinforcing rib, and the fan-shaped body is located outside the inner cylinder; the other end of the inner cylinder serves as the fixed end;

[0017] The fan-shaped body serves as the arc-shaped shell, the support pad serves as the elastic buffer, and the support pad is installed on the outer wall of the fan-shaped body.

[0018] Furthermore, the cantilever support device comprises a supporting bottom plate, a side end plate, and an arc-shaped shell;

[0019] One end of the supporting bottom plate is a fixed end; the other end is a supporting end, provided with the arc-shaped shell and the side end plate, and the side end plate is located on both sides of the arc-shaped shell;

[0020] The support pad serves as the elastic buffer.

[0021] Furthermore, when the cantilever support device is installed on the wall surface of the gate pier, the support end of the cantilever support device supports the center of the beam at the bottom of the movable gate flap;

[0022] When the cantilever support device is installed on the top of the frame, the support end of the cantilever support device supports the center of the connecting bottom plate and the center of the crossbeam at the bottom of the movable door flap.

[0023] The present invention provides a method for reducing the long-term load time of an underwater hydraulic press by adopting the following technical scheme:

[0024] When the movable gate flap in the stepless stratified water intake gate device is in a fully open state, it is supported by a cantilever support device, and the underwater hydraulic press is in a pressure relief state;

[0025] One end of the cantilever support device serves as a fixed end, fixedly mounted on the gate pier wall on both sides of the movable gate flap and / or the top of the frame, and the other end serves as a supporting end, used to support the bottom of the movable gate flap in a fully open state.

[0026] Furthermore, when a cantilever support device is provided on the pier wall, the following steps are included:

[0027] Step 1: With the rotation hinge point of the movable door flap of the lower door leaf device as the center and the distance from the outer edge of the movable door flap to the hinge point as the radius, draw a circle O1 to determine the operating area of ​​the movable door flap of the lower door leaf device;

[0028] Step 2: When the movable door flap of the above-mentioned door leaf device is in a horizontal state, a horizontal line segment P1P2 is drawn along the front and rear outer edges of the bottom of the movable door flap;

[0029] Step 3: Draw a vertical line from P1 to intersect the circle O1 at P3, and draw a vertical line from P2 to intersect the circle O1 at P4;

[0030] Step 4: The cantilever support device is set in the P1P2P4P3 area of ​​the pier wall.

[0031] Beneficial effects:

[0032] 1. One end of the cantilever support device is used as a fixed end, which is fixedly installed on the gate pier wall and / or the top of the frame on both sides of the movable gate flap, and the other end is used as a supporting end to support the bottom of the movable gate flap.

[0033] In this way, the traditional idea of ​​pulling the movable gate flap by the pulling force of the underwater hydraulic press is avoided, and the idea of ​​solving the problem of long-term load and fatigue effect of the underwater hydraulic press from the perspective of improving the reliability of the underwater hydraulic press is also avoided. Instead, a cantilever support device is set on the gate pier wall and / or the top of the frame, so that the movable gate flap is in a fully open state. The load is borne by the cantilever support device, and then the underwater hydraulic press can be in a pressure relief state, which greatly reduces the time of the underwater hydraulic press carrying load, reduces the probability of fatigue effect of the underwater hydraulic press, and effectively improves the service life of the underwater hydraulic press. Moreover, the cantilever support device can be set at one position on the gate pier wall and the top of the frame, or it can be set on both the gate pier wall and the top of the frame. It has high flexibility and strong feasibility. When the cantilever support device is set on the gate pier wall and the top of the frame, the reliability can be improved.

[0034] 2. An elastic buffer is provided on the support end to support the bottom of the movable door flap. In this way, the impact force generated when the bottom of the movable door flap contacts the support end can be reduced, the reliability of the cantilever support device can be ensured, and the service life of the underwater hydraulic press can be further improved.

[0035] 3. The elastic buffer is provided with a support plane for supporting the bottom of the movable door flap. In this way, the support plane design of the elastic buffer ensures that when the cantilever support device supports the movable door flap (not at the moment of contact), the bottom of the movable door flap is evenly supported, avoiding structural deformation or damage caused by uneven force.

[0036] 4. The elastic buffer is arc-shaped and installed on the outside of the arc-shaped shell. In this way, compared with the elastic buffer being set as a plane support, the moment the bottom of the movable door flap collides with the bottom of the elastic buffer (not during normal support), the elastic buffer is an arc-shaped structure (similar to an arch bridge), and the vibration reduction effect is better.

[0037] 5. One end of the inner cylinder is coaxially sleeved in the outer cylinder and fixedly connected to the outer cylinder through reinforcing ribs; the other end of the inner cylinder is used as a fixed end; the outer cylinder is used as an arc-shaped shell, and the support pad is used as an elastic buffer, and the support pad is installed on the outer wall of the outer cylinder. In this way, the cantilever support device is composed of the inner cylinder and the outer cylinder, which are fixedly connected by reinforcing ribs, forming an arc structure with good vibration reduction effect, and at the same time, the structure is simple and can effectively absorb and buffer pressure.

[0038] 6. When the cantilever support device is installed on the pier wall, the support end of the cantilever support device supports the center of the beam at the bottom of the movable gate flap; when the cantilever support device is installed on the top of the frame, the support end of the cantilever support device supports the center of the connecting bottom plate and the center of the beam at the bottom of the movable gate flap. This is conducive to uniform contact between the cantilever support device and the movable gate flap support, and the force transmission is concentrated during support, resulting in a good support effect.

[0039] 7. When setting a cantilever support device on the gate pier wall, the steps include: step 1: taking the rotation hinge point of the movable door flap of the lower gate leaf device as the center and the distance from the outer edge of the movable door flap to the hinge point as the radius, draw a circle O1 to determine the operating area of ​​the movable door flap of the lower gate leaf device; step 2: when the movable door flap of the upper gate leaf device is in a horizontal state, draw a horizontal line segment P1P2 at the front and rear outer edges of the bottom of the movable door flap; step 3: draw a vertical line with P1 and intersect the circle O1 at P3, and draw a vertical line with P2 and intersect the circle O1 at P4; step 4: the cantilever support device is set in the P1P2P4P3 area of ​​the gate pier wall. In this way, it can be ensured that the cantilever support device on the gate pier wall does not interfere with the movement of the movable door flap. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a side view of the cantilever support device provided in the first embodiment of the present invention installed on the gate pier wall surface on both sides of the movable gate flap;

[0041] Figure 2 1 is a top view of a cantilever support device provided in the first embodiment of the present invention installed on the gate pier wall surface on both sides of the movable gate flap;

[0042] Figure 3 yes Figure 2 Schematic diagram of medium and large sample A;

[0043] Figure 4 1 is a front view of a cantilever support device provided in the first embodiment of the present invention installed on the gate pier wall on both sides of the movable gate flap;

[0044] Figure 5 is a side view of a cantilever support device provided in Embodiment 1 of the present invention, which is welded and installed on the top of a frame;

[0045] Figure 6 yes Figure 5 Sectional view along line C-C;

[0046] Figure 7 is a side view of a cantilever support device provided in Embodiment 1 of the present invention, which is installed on the top of a frame by bolt connection;

[0047] Figure 8 yes Figure 7 Sectional view along line F-F;

[0048] Fig. 9 It is a side view of the cantilever support device provided in the first embodiment of the present invention installed on the pier wall surface on both sides of the movable gate flap and the top of the frame;

[0049] Fig.10 This is a front view of a first cantilever support device provided in Embodiment 1 of the present invention;

[0050] Fig.11 It is a side view of a first cantilever support device provided in Embodiment 1 of the present invention;

[0051] Fig.12 is a top view of a first cantilever support device provided in Embodiment 1 of the present invention;

[0052] Fig.13 It is a front view of a second cantilever support device provided in the first embodiment of the present invention;

[0053] Fig.14 is a side view of a second cantilever support device provided in the first embodiment of the present invention;

[0054] Fig.15 is a top view of a second cantilever support device provided in the first embodiment of the present invention;

[0055] Fig.16 It is a front view of a third cantilever support device provided in the first embodiment of the present invention;

[0056] Fig.17is a side view of a third cantilever support device provided in the first embodiment of the present invention;

[0057] Fig.18 is a top view of a third cantilever support device provided in the first embodiment of the present invention;

[0058] Fig.19 yes Fig.18 Sectional view along line D-D;

[0059] Fig. 20 It is a front view of a fourth cantilever support device provided in the first embodiment of the present invention;

[0060] Fig.21 is a side view of a fourth cantilever support device provided in the first embodiment of the present invention;

[0061] Fig. 22 is a top view of a fourth cantilever support device provided in the first embodiment of the present invention;

[0062] Fig.23 yes Fig. 22 Sectional view along line E-E;

[0063] Fig.24 It is a front view of a fifth cantilever support device provided in the first embodiment of the present invention;

[0064] Fig.25 is a side view of a fifth cantilever support device provided in the first embodiment of the present invention;

[0065] Fig.26 is a top view of a fifth cantilever support device provided in the first embodiment of the present invention;

[0066] Fig. 27 yes Fig.26 Sectional view along line G-G;

[0067] Fig.28 It is a front view of a sixth cantilever support device provided in the first embodiment of the present invention;

[0068] Fig.29 is a side view of a sixth cantilever support device provided in the first embodiment of the present invention;

[0069] Fig.30 is a top view of a sixth cantilever support device provided in the first embodiment of the present invention;

[0070] Fig.31 yes Fig.30 Sectional view along line H-H;

[0071] Fig.32 This is a schematic diagram of the principle of step 1 in embodiment 2 of the present invention;

[0072] Fig.33 This is a schematic diagram of the principle of step 2 in embodiment 2 of the present invention;

[0073] Fig.34 It is a schematic diagram of the principle of step three in embodiment 2 of the present invention.

[0074] Among them: 1-movable door flap, 2-frame, 3-underwater hydraulic press, 4-lateral cantilever support device, 5-upper door leaf device, 6-lower door leaf device, 7-pier wall, 8-side water seal device, 9-support end, 10-fixed end, 11-crossbeam, 12-steel plate, 13-inner cylinder, 14-outer cylinder, 15-baffle, 16-support pad, 17-first reinforcement rib, 18-fan-shaped body, 19-arc groove, 20-fastening bolt, 21-positive cantilever support device, 22-support bottom plate, 23-first side end plate, 24-circular support elastic cylinder, 25-second reinforcement plate, 26-upper round and lower flat support elastic cylinder, 27-round steel cylinder, 28-second side end plate, 29-screw, 30-cross reinforcement rib, 31-connecting bottom plate, 32-connecting end plate. DETAILED DESCRIPTION

[0075] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0076] Embodiment 1:

[0077] Reference Figure 1 to Figure 31 The present invention provides a device for reducing the loading time of an underwater hydraulic press. The inventive concept is as follows: the device for reducing the loading time of an underwater hydraulic press comprises more than two sections of door leaf devices distributed up and down, each door leaf device comprises a frame 2, a movable door flap 1 hinged to the frame 2, and an underwater hydraulic press 3 for driving the movable door flap 1 to rotate, and in particular, also comprises a cantilever support device; one end of the cantilever support device serves as a fixed end 10, which is fixedly installed on the pier wall 7 on both sides of the movable door flap 1 and / or the top of the frame 2, and the other end serves as a support end 9, which is used to support the bottom of the movable door flap 1.

[0078] In this way, the conventional idea of ​​pulling the movable door flap 1 by the pulling force of the underwater hydraulic machine 3 is avoided, and the idea of ​​solving the problem of fatigue effect caused by long-term load of the underwater hydraulic machine 3 from the perspective of improving the reliability of the underwater hydraulic machine 3 is also avoided. Instead, a cantilever support device is set on the gate pier wall 7 and / or the top of the frame 2, so that the movable door flap 1 is loaded by the cantilever support device when it is in a fully open state, and then the underwater hydraulic machine 3 can be in a pressure relief state, which greatly reduces the time of the underwater hydraulic machine 3 carrying load, reduces the probability of fatigue effect of the underwater hydraulic machine 3, and effectively improves the service life of the underwater hydraulic machine 3. Moreover, the cantilever support device can be set at one of the two positions on the gate pier wall 7 and the top of the frame 2, or can be set on both the gate pier wall 7 and the top of the frame 2, which has high flexibility and strong feasibility. When the cantilever support device is set on the gate pier wall 7 and the top of the frame 2, the reliability can be improved.

[0079] The cantilever support device provided in this embodiment has flexible installation positions. Figure 1 to Figure 4 The cantilever support device is welded and installed on the steel plate 12 of the gate pier wall 7. At this time, the cantilever support device supports the bottom of both sides of the movable gate flap 1. Figures 5 to 8 The cantilever support device is installed on the top of the door leaf device frame 2 by welding or bolting. At this time, the cantilever support device supports the bottom of the end (which can be regarded as the downstream side) where the movable door flap 1 is hinged to the frame 2. More specifically, the movable door flap 1 in the upper door leaf device 5 is supported by the cantilever support device on the top of the frame 2 of the lower door leaf device 6. Fig. 9 , cantilever support devices are fixedly installed on the gate pier wall 7 on both sides of the movable gate flap 1 and the top of the frame 2. At this time, both sides of the movable gate flap 1 and the bottom of the hinged side are supported at the same time, and the reliability is higher.

[0080] Specifically, refer to Figure 1 When the cantilever support device is installed on the gate pier wall 7, it is called a lateral cantilever support device 4 in this embodiment, and the supporting end of the lateral cantilever support device 4 supports the center of the crossbeam 11 at the bottom of the movable gate flap 1; refer to Figure 5 , Figure 7 When the cantilever support device is installed on the top of the frame, it is called the positive cantilever support device 21 in this embodiment. The support end of the positive cantilever support device 21 supports the center of the connecting bottom plate 31 at the bottom of the movable door flap 1 and the center of the crossbeam 11. In this way, it is beneficial to ensure uniform contact between the cantilever support device and the support of the movable door flap 1, and to concentrate the force transmission during support, so as to achieve a good support effect. In addition, when the cantilever support device is installed on the top of the frame 2, the cantilever support device should be outside the operating area of ​​the movable door flap 1 to avoid interference.

[0081] As an improvement, in this embodiment, an elastic buffer is provided on the support end 9 to support the bottom of the movable door flap 1. In this way, the impact force generated when the bottom of the movable door flap 1 contacts the support end 9 can be reduced, the reliability of the cantilever support device can be ensured, and the service life of the underwater hydraulic press 3 can be further improved.

[0082] Specifically, the elastic buffer can be provided with a support plane for supporting the bottom of the movable door flap 1. In this way, the support plane design of the elastic buffer ensures that when the cantilever support device supports the movable door flap 1 (not at the moment of contact), the bottom of the movable door flap 1 is evenly supported, thereby avoiding structural deformation or damage caused by uneven force.

[0083] As a further improvement, in this embodiment, an arc-shaped shell is provided at the support end 9, the elastic buffer is arc-shaped, and the elastic buffer is installed on the outside of the arc-shaped shell. In this way, compared with the elastic buffer being provided as a plane support, at the moment when the bottom of the movable door flap 1 collides with the bottom of the elastic buffer (not when it is supported steadily), because the elastic buffer is an arc-shaped structure (similar to an arch bridge), the vibration reduction effect is better. Under the concept of providing an arc-shaped shell at the support end 9, the elastic buffer is arc-shaped, and the elastic buffer is installed on the outside of the arc-shaped shell, this example provides the following six cantilever support devices for selection:

[0084] The first one: reference Figure 10 to Figure 12 The cantilever support device includes an inner cylinder 13, an outer cylinder 14, a support pad 16 and a first reinforcing rib 17; one end of the inner cylinder 13 serves as a support end 9, which is coaxially sleeved in the outer cylinder 14 and fixedly connected to the outer cylinder 14 as a whole through the first reinforcing rib 17; the other end of the inner cylinder 13 serves as a fixed end 10; the outer cylinder 14 serves as an arc-shaped shell, and the support pad 16 serves as an elastic buffer, and the support pad 16 is installed on the outer wall of the outer cylinder 14. Specifically, two baffles 15 are provided on the top outer wall of the outer cylinder 14, and the baffles 15 are L-shaped. An arc groove 19 is formed between the baffles 15 and the top outer wall of the outer cylinder 14, and both ends of the support pad 16 are fixed to the outer wall of the top of the outer cylinder 14 by fastening bolts 20. In this way, the cantilever support device is composed of an inner cylinder 13 and an outer cylinder 14, which are fixedly connected by the first reinforcing rib 17 to form an arc-shaped support structure. The contact between the movable door flap 1 and the cantilever support device is a point-to-line contact process, which has a good vibration reduction effect. At the same time, the structure is simple and can effectively absorb and buffer pressure.

[0085] In addition, it should be noted that, since the movable gate flap 1 is provided with a side water seal device 8 for forming a seal between the outer edge of the movable gate flap 1 and the gate pier wall 7, in order to avoid interference between the cantilever support device provided on the gate pier wall 7 and the side water seal device 8, refer to Figure 4The length L0 of the fixed end 10 is greater than the width B of the side water seal device 8 , and the height difference H0 between the top of the fixed end 10 and the top of the supporting end 9 is greater than the height H of the side water seal device 8 .

[0086] The second type is different from the first type in that the outer cylinder 14 is replaced by a fan-shaped body 18. Specifically, refer to Figure 13 to Figure 15 The cantilever support device includes an inner cylinder 13, a sector 18, a support pad 16 and a first reinforcing rib 17; one end of the inner cylinder 13 is used as a support end 9, which is fixedly connected to the sector 18 through the first reinforcing rib 17, and the sector 18 is located outside the inner cylinder 13; the other end of the inner cylinder 13 is used as a fixed end 10; the sector 18 is used as an arc-shaped shell, and the support pad 16 is used as an elastic buffer, and the support pad 16 is installed on the outer wall of the sector 18. Specifically, two baffles 15 are provided on the top outer wall of the sector 18, and the baffles 15 are L-shaped. An arc groove 19 is formed between the baffles 15 and the top outer wall of the sector 18, and the two ends of the support pad 16 are fixed to the outer wall of the top of the outer cylinder 14 by fastening bolts 20.

[0087] The third type: reference Figure 16 to Figure 19 The cantilever support device includes a support base plate 22, a side end plate 23, and an arc-shaped shell; one end of the support base plate 22 is a fixed end; the other end is used as a support, 9, and an arc-shaped shell and a side end plate 23 are provided, and the side end plates 23 are located on both sides of the arc-shaped shell; the support pad 16 serves as an elastic buffer. More specifically, the arc-shaped shell is composed of a round steel cylinder 27, and a second reinforcing plate 25 and a second side end plate 28 are also provided. The second side end plate 28 is located at both ends of the round steel cylinder 27, and the second side end plate 28 is fixed to the support base plate 22 together with the round steel cylinder 17. The second reinforcing plate 25 fixes the two round steel cylinders 27 to the second side end plate 28, thereby improving the support reliability. After the support pad 16 is installed on the outer wall at the top of the round steel cylinder 27, a circular supporting elastic cylinder 24 is formed as a whole. Moreover, a cross-shaped reinforcing rib 30 is provided in the round steel cylinder 27 to improve stability. Specifically, two baffles 15 are provided on the top outer wall of the round steel cylinder 27. The baffles 15 are L-shaped, and an arc groove 19 is formed between the baffles 15 and the top outer wall of the round steel cylinder 27. Both ends of the support pad 16 are fixed to the top outer wall of the round steel cylinder 27 by fastening bolts 20.

[0088] The fourth type is different from the third type in that the round steel cylinder 27 is replaced by an arched steel cylinder. Specifically, refer to Figure 20 to Figure 23The cantilever support device includes a support base plate 22, a first side end plate 23, and an arc-shaped shell; one end of the support base plate 22 is a fixed end 10; the other end is a support end 9, and is provided with an arc-shaped shell and a first side end plate 23, and the first side end plate 23 is located on both sides of the arc-shaped shell; the support pad 16 serves as an elastic buffer. In addition, a second reinforcing plate 25 and a second side end plate 28 are also provided. The second side end plate 28 is located at both ends of the arched steel cylinder and is fixed to the support base plate 22 together with the arched steel cylinder. The second reinforcing plate 25 fixes the two arched steel cylinders to the second side end plate 28 to improve the support reliability. Specifically, the arched steel cylinder serves as an arc-shaped shell, and the support pad 16 is installed on the top outer wall of the arc-shaped shell, and the whole constitutes an upper round and lower flat support elastic cylinder 26. More specifically, two baffles 15 are provided on the top outer wall of the arched steel cylinder. The baffles 15 are L-shaped, and an arc groove 19 is formed between the baffles 15 and the top outer wall of the arched steel cylinder. Both ends of the support pad 16 are fixed to the outer wall of the top of the arched steel cylinder by fastening bolts 20.

[0089] The fifth type is different from the third type in that a connecting end plate 32 is provided, and the connecting end plate 32 is fixed to the fixed end. The connecting end plate 32 can be fixed to the gate pier wall 7 or to the frame 2 of the gate leaf device. Figure 24 to Figure 27 The cantilever support device includes a support base plate 22, a first side end plate 23, and an arc-shaped shell; one end of the support base plate 22 is a fixed end 10; the other end is a support end 9, and is provided with two arc-shaped shells and side end plates 23, and the first side end plates 23 are located on both sides of the two arc-shaped shells; the support pad 16 serves as an elastic buffer. Specifically, each arc-shaped shell is formed by a round steel cylinder 27, and a second reinforcing plate 25 and a second side end plate 28 are also provided. The second side end plate 28 is located at both ends of the round steel cylinder 27, and the second side end plate 28 is fixed to the support base plate 22 together with the round steel cylinder 27. The second reinforcing plate 25 fixes the two round steel cylinders 27 to the side end plate 32 to improve the support reliability. A cross-shaped reinforcing rib 30 is provided in the round steel cylinder 27 to improve the support reliability. The support pad 16 is installed on the outer wall of the top of the round steel cylinder 27 to form a circular support elastic cylinder 24. The two ends of the circular supporting elastic cylinder 24 are also provided with second side end plates 28, which fix the round steel cylinder 27 to the supporting bottom plate 22. In addition, the two ends of the supporting pad 16 are respectively fixed by a baffle 15, and the baffle 15 is an L-shaped structure. After the baffle 15 is fixed to the top of the round steel cylinder 27, an arc groove 19 is formed, and the two ends of the supporting pad 16 are fixed in the arc groove 19 by screws 29.

[0090] The sixth type: Different from the fifth type, refer to Figure 28 to Figure 31 The round steel cylinder 27 is replaced by an arched steel cylinder, and the support pad is installed on the outer wall of the top of the arched steel cylinder to form an upper round and lower flat supporting elastic cylinder 26.

[0091] Embodiment 2:

[0092] Reference Figure 32 to Figure 34 The present embodiment provides a method for reducing the long-term load time of the underwater hydraulic machine 3. The inventive concept of the method is: when the movable gate flap 1 in the stepless stratified water intake gate device is in a fully open state, it is supported by a cantilever support device, and the underwater hydraulic machine 3 is in a pressure relief state; one end of the cantilever support device serves as a fixed end 10, which is fixedly installed on the gate pier wall 7 on both sides of the movable gate flap 1 and / or the top of the frame 2, and the other end serves as a support end 9, which is used to support the bottom of the movable gate flap 1 in the fully open state.

[0093] Specifically, when a cantilever support device is provided on the gate pier wall 7, the following steps can be followed:

[0094] Step 1: With the rotation hinge point of the movable door flap 1 of the lower door leaf device 6 as the center and the distance from the outer edge of the movable door flap 1 to the hinge point as the radius, draw a circle O1 to determine the operating area of ​​the movable door flap 1 of the lower door leaf device 6;

[0095] Step 2: When the movable door flap 1 of the above-mentioned door leaf device 5 is in a horizontal state, a horizontal line segment P1P2 is drawn along the front and rear outer edges of the bottom of the movable door flap 1;

[0096] Step 3: Draw a vertical line from P1 to intersect the circle O1 at P3, and draw a vertical line from P2 to intersect the circle O1 at P4;

[0097] Step 4: The cantilever support device is set in the P1P2P4P3 area of ​​the pier wall 7.

[0098] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for reducing the loading time of an underwater hydraulic press, comprising: A door leaf device with more than two sections distributed up and down, each door leaf device comprises a frame, a movable door flap hinged to the frame, and an underwater hydraulic press for driving the movable door flap to rotate, characterized in that it also comprises a cantilever support device; One end of the cantilever support device serves as a fixed end, which is fixedly mounted on the gate pier wall on both sides of the movable gate flap and / or the top of the frame, and the other end serves as a supporting end, which is used to support the bottom of the movable gate flap.

2. According to the device for reducing the loading time of an underwater hydraulic press as described in claim 1, an elastic buffer is provided on the supporting end to support the bottom of the movable door flap.

3. The device for reducing the loading time of an underwater hydraulic press according to claim 2, characterized in that: The elastic buffer is provided with a supporting plane for supporting the bottom of the movable door flap.

4. The device for reducing the loading time of an underwater hydraulic press according to claim 2, characterized in that: The support end is also provided with an arc-shaped housing; The elastic buffer is arc-shaped and is installed on the outer side of the arc-shaped housing.

5. The device for reducing the loading time of an underwater hydraulic press according to claim 4, characterized in that: The cantilever support device comprises an inner cylinder, an outer cylinder, a support pad and a reinforcing rib; One end of the inner cylinder is coaxially sleeved in the outer cylinder and fixedly connected to the outer cylinder through the reinforcing ribs; the other end of the inner cylinder serves as the fixed end; The outer cylinder serves as the arc-shaped shell, the support pad serves as the elastic buffer, and the support pad is installed on the outer wall of the outer cylinder.

6. The device for reducing the loading time of an underwater hydraulic press according to claim 4, characterized in that: The cantilever support device comprises an inner cylinder, a fan-shaped body, a support pad and a reinforcing rib; One end of the inner cylinder is fixedly connected to the fan-shaped body through the reinforcing rib, and the fan-shaped body is located outside the inner cylinder; the other end of the inner cylinder serves as the fixed end; The fan-shaped body serves as the arc-shaped shell, the support pad serves as the elastic buffer, and the support pad is installed on the outer wall of the fan-shaped body.

7. The device for reducing the loading time of an underwater hydraulic press according to claim 4, characterized in that: The cantilever support device comprises a supporting bottom plate, a side end plate, and an arc-shaped shell; One end of the supporting bottom plate is a fixed end; the other end is a supporting end, provided with the arc-shaped shell and the side end plate, and the side end plate is located on both sides of the arc-shaped shell; The support pad serves as the elastic buffer.

8. A device for reducing the loading time of an underwater hydraulic press according to any one of claims 2 to 7, characterized in that: When the cantilever support device is installed on the gate pier wall, the support end of the cantilever support device supports the center of the beam at the bottom of the movable gate flap; When the cantilever support device is installed on the top of the frame, the support end of the cantilever support device supports the center of the connecting bottom plate and the center of the crossbeam at the bottom of the movable door flap.

9. A method for reducing the long-term load time of an underwater hydraulic press, characterized in that: When the movable gate flap in the stepless stratified water intake gate device is in a fully open state, it is supported by a cantilever support device, and the underwater hydraulic press is in a pressure relief state; One end of the cantilever support device serves as a fixed end, fixedly mounted on the gate pier wall on both sides of the movable gate flap and / or the top of the frame, and the other end serves as a supporting end, used to support the bottom of the movable gate flap in a fully open state.

10. A method for reducing the long-term load time of an underwater hydraulic press according to claim 9, characterized in that: The following steps are included when the cantilever support device is arranged on the gate pier wall: Step 1: With the rotation hinge point of the movable door flap of the lower door leaf device as the center and the distance from the outer edge of the movable door flap to the hinge point as the radius, draw a circle O1 to determine the operating area of ​​the movable door flap of the lower door leaf device; Step 2: When the movable door flap of the above-mentioned door leaf device is in a horizontal state, a horizontal line segment P1P2 is drawn along the front and rear outer edges of the bottom of the movable door flap; Step 3: Draw a vertical line from P1 to intersect the circle O1 at P3, and draw a vertical line from P2 to intersect the circle O1 at P4; Step 4: The cantilever support device is set in the P1P2P4P3 area of ​​the pier wall.

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