A lateral hydraulic tightening device for gates used for maintenance

Abstract

The present invention relates to the technical field of gate maintenance, and specifically to a lateral hydraulic jacking device for gate maintenance, comprising a concrete support, wherein the concrete support is arranged in a concave shape, a fixing frame is arranged in the concrete support, and the fixing frame is arranged in two groups; a gate, wherein the gate is installed in the fixing frame, and the gate is movably connected to the fixing frame; through the structure of the hydraulic cylinder, a first trapezoidal block and a second trapezoidal block are simultaneously pushed to slide in the same direction and the same distance, and the hypotenuse of the first trapezoidal block and the second trapezoidal block is matched with the hypotenuse of a connecting seat, so that when the first trapezoidal block and the second trapezoidal block move toward the gate, the gate will be pushed upward, thereby avoiding safety hazards caused by maintenance personnel performing underwater operations, and the connecting seat abuts against the first and second trapezoidal blocks, thereby avoiding the problem of water flow flushing the gate open after the gate is raised.

Description

Technical Field

[0001] The invention relates to the technical field of gate maintenance, and in particular to a lateral hydraulic tightening device for gates used for maintenance. Background Art

[0002] Gates are control facilities used to close and open water discharge channels. They are an important part of hydraulic structures and can be used to intercept water flow, control water levels, regulate flow, and discharge sediment and floating objects.

[0003] In the prior art, the normal state of the gate is a state of closing the water channel. In order to ensure the normal use of the gate, personnel need to be arranged to inspect and repair the gate.

[0004] However, part of the gate is located underwater, and since the function of the gate is to close the water channel, the water flow near the gate is turbulent and the water pressure is high, which may easily lead to safety hazards during the maintenance process. Summary of the invention

[0005] The object of the present invention is to provide a lateral hydraulic tightening device for a gate for maintenance, so as to solve the problems raised by the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A lateral hydraulic tightening device for a gate for maintenance, comprising:

[0008] Concrete support, the concrete support is arranged in a concave shape, a fixing frame is arranged inside the concrete support, and the fixing frame is arranged in two groups;

[0009] A gate, the gate is installed in the fixing frame, and the gate is movably connected to the fixing frame;

[0010] A gas delivery device, the gas delivery device is arranged in the gate, an air bag is arranged below the gate, and the gas delivery device is connected to the air bag;

[0011] The gas delivery device is provided with a piston rod for delivering the internal gas into the airbag, and a rotating rod is provided on the side of the piston rod. The two ends of the rotating rod are provided with limit assemblies for limiting the upward and downward movement of the rotating rod, so that the gas delivery device introduces gas into the airbag during the upward movement of the gate;

[0012] A first trapezoidal block is disposed below the gate, a second trapezoidal block is disposed below another gate, the first trapezoidal block and the second trapezoidal block move synchronously, and the first trapezoidal block and the second trapezoidal block simultaneously lift the two gates upwards to facilitate the inspection of the gates.

[0013] Furthermore, the fixing frame is arranged in a U shape, the lower end of the fixing frame is fixedly connected to the inner lower side of the concrete support, the inner walls on both sides of the fixing frame are respectively fixedly connected with guide rails, the gate is arranged in the guide rails, the two ends of the gate are respectively fixedly connected with movable blocks, the movable blocks are arranged in the guide rails, the movable blocks are vertically slidably connected to the guide rails, and the movable blocks are rotatably connected to the inner wall of the fixing frame.

[0014] Furthermore, a connecting seat is fixedly connected to the bottom of the gate, and the connecting seat is arranged in a trapezoidal shape. The lower part of the connecting seat is arranged with a hypotenuse, and the hypotenuse of the connecting seat corresponds to the hypotenuse of the first trapezoidal block and the second trapezoidal block. The hypotenuse surfaces of the first trapezoidal block and the second trapezoidal block are provided with sealing gaskets, and the first trapezoidal block and the second trapezoidal block are both sealed and abutted with the lower part of the connecting seat through the sealing gaskets. The first trapezoidal block and the second trapezoidal block are fixedly connected by a plurality of second connecting rods, and a hydraulic cylinder is arranged at a position of the first trapezoidal block away from the second trapezoidal block, and the hydraulic cylinder drives the first trapezoidal block and the second trapezoidal block to move.

[0015] Furthermore, the airbag is arranged in the connecting seat, and an air guide port is fixedly installed above the airbag, and a plurality of air guide ports are provided, and a gas delivery device is installed above each of the air guide ports, and an air guide pipe is fixedly connected below the gas delivery device, and the air guide pipe is communicated with the gas delivery device, and the lower end of the air guide pipe is connected to the air guide port, and an opening is provided above the gas delivery device, and the piston rod is vertically slidably connected in the opening of the gas delivery device, and a sealing head is installed at the end of the piston rod located in the gas delivery device, and the sealing head separates the internal space of the gas delivery device.

[0016] Furthermore, the end of the piston rod located outside the gas conveying device is fixedly connected to a lifting plate, a first spring is arranged above the lifting plate, the lower end of the first spring is fixedly connected to the upper surface of the lifting plate, the upper end of the first spring is fixedly connected to the inner wall of the gate, the part of the piston rod located below the lifting plate is sleeved with a fixing ring, the fixing ring is fixedly connected to the outer wall of the piston rod, the side walls of the fixing ring are respectively fixedly connected with a first connecting rod, the first connecting rods in the two gates are arranged facing each other, the outer end of the first connecting rod is fixed to the rotating rod, the two ends of the rotating rod are respectively fixedly connected to limiting blocks, the limiting block is arranged in a limiting groove, the limiting block is movably connected to the limiting groove, and the limiting groove is installed on the inner wall of the concrete support.

[0017] Furthermore, brackets are installed above both sides of the concrete support, the brackets are arranged in a U shape, both ends of the brackets are installed above the concrete support by bolts, a movable plate is slidably connected to the inner side of the bracket, both ends of the movable plate are respectively fixedly connected with movable rings, the movable rings are respectively sleeved on the brackets, the movable rings are horizontally slidably connected to the brackets, two groups of movable plates are provided, and the movable plates are respectively arranged on the same side above the two gates.

[0018] Furthermore, fixed seats are respectively fixedly connected to the two sides below the movable plate, a butt plate is arranged below the fixed seat, the butt plate is arranged in a Z shape, the lower inner wall of the butt plate abuts against the top of the gate, a lifting rod is fixedly connected to the top of the butt plate, the lifting rod is arranged in several groups, a lifting groove corresponding to the lifting rod is arranged below the fixed seat, the lifting rod is inserted into the lifting groove, the lifting rod is slidably connected to the lifting groove, a spline is arranged on the bottom inner wall of the lifting groove, and the spline is stuck in the spline groove of the outer wall of the lifting rod.

[0019] Furthermore, a second spring is provided above the lifting rod, one end of the second spring is fixedly connected to the top of the lifting rod, the other end of the second spring is fixedly connected to the inner wall of the lifting slot, a push rod is provided in the middle of the second spring, the push rod passes through the movable plate, a push block is fixedly connected to the top of the push rod, the outer side of the push block extends to the top of the movable ring, a positioning rod is fixedly connected to the bottom of the top block, a plurality of positioning holes are provided above the bracket, and the positioning rod is plugged and fixed to the positioning holes.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention uses the structure of the hydraulic cylinder to simultaneously push the first trapezoidal block and the second trapezoidal block to slide in the same direction and the same distance, and the hypotenuse of the first trapezoidal block and the second trapezoidal block fits with the hypotenuse of the connecting seat, so that when the first trapezoidal block and the second trapezoidal block move toward the gate, the gate will be lifted upward, avoiding safety hazards caused by maintenance personnel performing underwater operations, and the connecting seat abuts against the first and second trapezoidal blocks, which also avoids the problem of water flow flushing the gate after the gate is raised;

[0022] 2. In the process of lifting the gate upward, the position of the piston rod is limited by the rotating rod, so that the piston rod cannot move upward with the rise of the gate, so that the piston rod moves downward relative to the gate, and the sealing head is controlled to move downward in the gas conveying device, so that the airbag expands, and after the connecting seat slides above the first and second trapezoidal blocks, the gate is opened with the help of the impact of the water flow and its own buoyancy;

[0023] 3. Through the structure of the anti-plate, after the gate rises to a certain height, the anti-plate is pushed upward so that the positioning rod is disengaged from the positioning hole. Only then can the movable plate pull the gate to flip open. When the gate does not rise to the required height, the gate cannot be opened. However, since the gate rises to a certain height, it is convenient for employees to inspect and repair the gate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a front structural schematic diagram of the present invention;

[0025] Figure 2 It is a schematic diagram of the longitudinal section structure of the present invention;

[0026] Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle;

[0027] Figure 4 For the present invention Figure 2 The enlarged structural diagram at B in the middle;

[0028] Figure 5 It is a schematic diagram of the cross-sectional structure of the gate of the present invention;

[0029] Figure 6 For the present invention Figure 5 The enlarged structural diagram at C in the middle;

[0030] Figure 7 It is a schematic diagram of the top view of the structure of the present invention;

[0031] Figure 8 It is a schematic diagram of the cross-sectional structure of the movable plate of the present invention;

[0032] Fig. 9 For the present invention Figure 8 The enlarged structural diagram at D in the middle;

[0033] Fig.10 It is a schematic diagram of the cross-sectional structure of the fixing seat of the present invention;

[0034] Fig.11 For the present invention Fig.10 The enlarged structural diagram at E in the middle;

[0035] Fig.12 It is a schematic diagram of the upper cross-sectional structure of the gate of the present invention;

[0036] Fig.13 For the present invention Fig.12 Enlarged structural diagram at F in the middle.

[0037] In the figure: 1, concrete support; 11, limit groove; 2, fixed frame; 21, guide rail; 3, gate; 31, movable block; 32, connecting seat; 33, air bag; 34, air guide port; 4, gas delivery device; 41, air guide pipe; 42, piston rod; 43, sealing head; 44, lifting plate; 45, first spring; 46, fixing ring; 47, first connecting rod; 48, rotating rod; 49, limit block; 5, first trapezoidal block; 51, second trapezoidal block; 52, sealing pad; 53, hydraulic cylinder; 54, second connecting rod; 6, bracket; 61, positioning hole; 7, movable plate; 71, movable ring; 72, connecting plate; 73, third connecting rod; 8, fixed seat; 81, backing plate; 82, lifting rod; 83, lifting groove; 84, spline; 85, second spring; 86, push rod; 87, push block; 88, positioning rod. DETAILED DESCRIPTION

[0038] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in an exemplary manner in conjunction with the accompanying drawings.

[0039] See also Figures 1 to 13 The present invention provides a technical solution: a lateral hydraulic jacking device for gates for maintenance, comprising a concrete support 1, the concrete support 1 is arranged in a concave shape, a fixing frame 2 is arranged in the concrete support 1, and the fixing frame 2 is arranged in two groups;

[0040] A gate 3, wherein the gate 3 is installed in the fixing frame 2, and the gate 3 is movably connected to the fixing frame 2;

[0041] The structure of the two sets of fixing frames 2 and the gate 3 makes the effect of the gate 3 better.

[0042] A gas delivery device 4, wherein the gas delivery device 4 is disposed in the gate 3, an air bag 33 is disposed below the gate 3, and the gas delivery device 4 is connected to the air bag 33;

[0043] Through the structure of the gas delivery device 4, the gas inside is injected into the airbag 33, so that the airbag 33 is inflated, thereby reducing the force required to open the gate 3 and thereby reducing energy consumption.

[0044] The gas delivery device 4 is provided with a piston rod 42 for delivering the internal gas into the airbag 33, and a rotating rod 48 is provided on the side of the piston rod 42. The two ends of the rotating rod 48 are provided with limit assemblies for limiting the upward and downward movement of the rotating rod 48, so that the gas delivery device 4 can introduce gas into the airbag 33 during the upward movement of the gate 3;

[0045] The structure of the limit assembly prevents the rotating rod 48 from moving vertically up and down. During the upward rising process of the gate 3, the relative positions of the gate 3 and the rotating rod 48 change, so that the piston rod 42 always remains at the same height. After rising on the gate 3, it drives the piston rod 42 to move downward in the gate 3.

[0046] The first trapezoidal block 5 is arranged below the gate 3, and the second trapezoidal block 51 is arranged below the other gate 3. The first trapezoidal block 5 and the second trapezoidal block 51 move synchronously, and the first trapezoidal block 5 and the second trapezoidal block 51 simultaneously lift the two gates 3 upward to facilitate the inspection of the gates 3.

[0047] Through the structure of the first trapezoidal block 5 and the second trapezoidal block 51, the gates 3 on both sides are opened or closed at the same time. By moving the first trapezoidal block 5 and the second trapezoidal block 51 toward the gates 3, the gates 3 on both sides are lifted up at the same time, which facilitates the maintenance of the gates 3.

[0048] The fixing frame 2 is arranged in a U shape, the lower end of the fixing frame 2 is fixedly connected to the inner lower side of the concrete support 1, the inner walls on both sides of the fixing frame 2 are respectively fixedly connected with guide rails 21, the gate 3 is arranged in the guide rails 21, and the two ends of the gate 3 are respectively fixedly connected with movable blocks 31, the movable blocks 31 are arranged in the guide rails 21, the movable blocks 31 are vertically slidably connected to the guide rails 21, and the movable blocks 31 are rotatably connected to the inner wall of the fixing frame 2.

[0049] As a result of the sliding of the movable block 31 in the guide rail 21, the gate 3 is kept moving vertically upward in the initial upward rising state until the movable block 31 slides out from the top of the guide rail 21, and the gate 3 can be rotated and opened and closed with the fixed frame 2. After the gate 3 rises vertically a certain distance, the gate 3 is raised without being opened, so as to facilitate its inspection and maintenance.

[0050] The bottom of the gate 3 is fixedly connected with a connecting seat 32, and the connecting seat 32 is arranged in a trapezoidal shape. The lower part of the connecting seat 32 is arranged as a hypotenuse, and the hypotenuse of the connecting seat 32 corresponds to the hypotenuse of the first trapezoidal block 5 and the second trapezoidal block 51. The hypotenuse surfaces of the first trapezoidal block 5 and the second trapezoidal block 51 are both provided with sealing gaskets 52. The first trapezoidal block 5 and the second trapezoidal block 51 are both sealed and abutted with the lower part of the connecting seat 32 through the sealing gaskets 52. The first trapezoidal block 5 and the second trapezoidal block 51 are fixedly connected by a plurality of second connecting rods 54. A hydraulic cylinder 53 is arranged at a position of the first trapezoidal block 5 away from the second trapezoidal block 51, and the hydraulic cylinder 53 drives the first trapezoidal block 5 and the second trapezoidal block 51 to move.

[0051] The hypotenuse of the connecting seat 32 is a trapezoid, and the trapezoid fits with the first trapezoidal block 5 and the second trapezoidal block 51, and the first trapezoidal block 5 and the second trapezoidal block 51 are fixed by the second connecting rod 54, so that the first trapezoidal block 5 and the second trapezoidal block 51 move synchronously. In the process of the hydraulic cylinder 53 pushing the two to move, the connecting seat 32 is pushed upward, so that the gate 3 rises upward.

[0052] The airbag 33 is arranged in the connecting seat 32, and an air guide port 34 is fixedly installed above the airbag 33. There are several air guide ports 34, and a gas delivery device 4 is installed above each of the air guide ports 34. An air guide pipe 41 is fixedly connected below the gas delivery device 4, and the air guide pipe 41 is communicated with the gas delivery device 4. The lower end of the air guide pipe 41 is connected to the air guide port 34. An opening is arranged above the gas delivery device 4, and the piston rod 42 is vertically slidably connected in the opening of the gas delivery device 4. A sealing head 43 is installed at the end of the piston rod 42 located in the gas delivery device 4, and the sealing head 43 separates the internal space of the gas delivery device 4.

[0053] When the gate 3 needs to be opened, the piston rod 42 in the gas delivery device 4 drives the sealing head 43 to move downward, so that the gas below the gas delivery device 4 is compressed and enters the airbag 33 from the air guide port 34 through the air guide pipe 41, so that the airbag 33 expands and generates buoyancy to assist in opening the gate 3.

[0054] The end of the piston rod 42 located outside the gas conveying device 4 is fixedly connected to a lifting plate 44, and a first spring 45 is arranged above the lifting plate 44. The lower end of the first spring 45 is fixedly connected to the upper surface of the lifting plate 44, and the upper end of the first spring 45 is fixedly connected to the inner wall of the gate 3. The part of the piston rod 42 located below the lifting plate 44 is sleeved with a fixing ring 46, and the fixing ring 46 is fixedly connected to the outer wall of the piston rod 42. The side walls of the fixing ring 46 are respectively fixedly connected with first connecting rods 47. The first connecting rods 47 in the two gates 3 are arranged facing each other, and the outer ends of the first connecting rods 47 are fixed to the rotating rod 48. The two ends of the rotating rod 48 are respectively fixedly connected to limiting blocks 49, and the limiting blocks 49 are arranged in the limiting groove 11. The limiting blocks 49 are movably connected to the limiting groove 11, and the limiting groove 11 is installed on the inner wall of the concrete support 1.

[0055] In the initial state, the elastic force of the first spring 45 causes the lifting plate 44 to slide upward to the highest point, so that the piston rod 42 drives the sealing head 43 to be at the highest point, so that the space of the gas delivery device 4 below the sealing head 43 is maximized. At this time, the internal pressure is small, so that the airbag 33 contracts, avoiding a gap between the connecting seat 32 and the first trapezoidal block 5 and the second trapezoidal block 51. After the gate 3 rises, the upper and lower sliding limits of the limit block 49 are limited by the limit groove 11, so that the first connecting rod 47 and the fixing ring 46 prevent the piston rod 42 from moving upward with the gate 3, so that the piston rod 42 slides downward relative to the gate 3, and the gas delivery device 4 is controlled to automatically deliver gas to the airbag 33. At the same time, the limit block 49 slides in the limit groove 11, so that the rotating rod 48 will not hinder the gate 3 from flipping open after the gate 3 rises to the highest point, that is, after the movable block 31 slides out of the guide rail 21.

[0056] Brackets 6 are installed above both sides of the concrete support 1, and the brackets 6 are set to be U-shaped. Both ends of the brackets 6 are installed above the concrete support 1 by bolts. A movable plate 7 is slidably connected to the inside of the bracket 6, and both ends of the movable plate 7 are respectively fixedly connected with movable rings 71, and the movable rings 71 are respectively sleeved on the brackets 6. The movable rings 71 are horizontally slidably connected to the brackets 6. Two groups of movable plates 7 are provided, and the movable plates 7 are respectively arranged on the same side above the two gates 3.

[0057] The two sides below the movable plate 7 are respectively fixedly connected with fixed seats 8, and a butt plate 81 is arranged below the fixed seat 8. The butt plate 81 is arranged in a Z shape, and the lower inner wall of the butt plate 81 abuts against the upper part of the gate 3. A lifting rod 82 is fixedly connected to the upper part of the butt plate 81. The lifting rod 82 is arranged in several groups, and a lifting groove 83 corresponding to the lifting rod 82 is arranged below the fixed seat 8. The lifting rod 82 is inserted into the lifting groove 83, and the lifting rod 82 is slidably connected with the lifting groove 83. A spline 84 is arranged on the bottom inner wall of the lifting groove 83, and the spline 84 is stuck in the spline groove of the outer wall of the lifting rod 82.

[0058] The movable plate 7 moves with the movable ring 71 by sliding on the bracket 6, thereby driving the abutment plate 81 to move through the fixed seat 8. After the gate 3 rises to a certain height, the gate 3 abuts against the inner wall of the abutment plate 81, and as the abutment plate 81 moves horizontally, the gate 3 is driven to flip and open.

[0059] In the initial state, the support plate 81 is arranged below the fixed seat 8, and the lifting rod 82 slides vertically in the lifting groove 83, so that the support plate 81 can only slide in the vertical direction below the fixed seat 8, and the clamping structure between the spline 84 and the spline groove is used to limit the lowest point of the downward sliding of the support plate 81, so that when the gate 3 moves upward, the support plate 81 can be pushed up.

[0060] A second spring 85 is provided above the lifting rod 82, one end of the second spring 85 is fixedly connected to the top of the lifting rod 82, the other end of the second spring 85 is fixedly connected to the inner wall of the lifting slot 83, a push rod 86 is provided in the middle of the second spring 85, the push rod 86 passes through the movable plate 7, a push block 87 is fixedly connected above the push rod 86, the outer side of the push block 87 extends to the top of the movable ring 71, a positioning rod 88 is fixedly connected below the push block 87, a plurality of positioning holes 61 are provided above the bracket 6, and the positioning rod 88 is plugged and fixed to the positioning holes 61.

[0061] Under the elastic force of the second spring 85, the push plate 81 always has a downward movement tendency, that is, when there is no external force, the push plate 81 maintains the lowest point. After the gate 3 lifts the push plate 81 upward, the push rod 86 drives the push block 87 to move upward until the positioning rod 88 moves out of the positioning hole 61. At this time, the movable ring 71 can move on the bracket 6, and according to the positioning rod 88 inserted into different positioning holes 61, the positioning of the push plate 81 after movement is adjusted, so that the gate 3 maintains different opening ranges.

[0062] The positioning holes 61 are arranged in two groups, each group of the positioning holes 61 is arranged on one side of the gate 3, and each group of the positioning holes 61 is evenly distributed, and the positioning rods 88 are inserted into different positioning holes 61 to flip the gate 3 at different angles and fix it.

[0063] The structures of the two groups of positioning holes 61 enable the two groups of gates 3 to maintain a synchronous opening state, and the opening degrees of the two groups of gates 3 are completely consistent.

[0064] A connecting plate 72 is fixedly connected below the movable ring 71. The connecting plates 72 on the same side of the gate 3 are fixed by a third connecting rod 73. The connecting plate 72 is connected to an external oil cylinder, which drives the two groups of movable rings 71 to move synchronously.

[0065] Through the structure of the connecting plate 72 and the third connecting rod 73, the two groups of movable plates 7 maintain synchronous movement, so that the external oil cylinder can control the two groups of gates 3 to open and close to different degrees.

[0066] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A lateral hydraulic tightening device for gates for maintenance, characterized in that: include: A concrete support (1), wherein the concrete support (1) is arranged in a concave shape, a fixing frame (2) is arranged inside the concrete support (1), and the fixing frame (2) is provided in two groups; A gate (3), the gate (3) being installed in the fixing frame (2), the gate (3) being movably connected to the fixing frame (2); A gas delivery device (4), the gas delivery device (4) being arranged in the gate (3), an air bag (33) being arranged below the gate (3), the gas delivery device (4) being connected to the air bag (33); The gas delivery device (4) is provided with a piston rod (42) for delivering the internal gas into the air bag (33), and a rotating rod (48) is provided on the side of the piston rod (42). Both ends of the rotating rod (48) are provided with limit assemblies for limiting the upward and downward movement of the rotating rod (48), so that the gas delivery device (4) can introduce gas into the air bag (33) when the gate (3) moves upward; A first trapezoidal block (5), the first trapezoidal block (5) being arranged below the gate (3), a second trapezoidal block (51) being arranged below another gate (3), the first trapezoidal block (5) and the second trapezoidal block (51) moving synchronously, the first trapezoidal block (5) and the second trapezoidal block (51) simultaneously lifting the two gates (3) upwards, so as to perform maintenance on the gates (3); A connecting seat (32) is fixedly connected to the bottom of the gate (3); the connecting seat (32) is arranged in a trapezoidal shape; a hypotenuse is arranged below the connecting seat (32); the hypotenuse of the connecting seat (32) corresponds to the hypotenuse of the first trapezoidal block (5) and the second trapezoidal block (51); The airbag (33) is arranged in the connecting seat (32), an air guide port (34) is fixedly installed above the airbag (33), a plurality of air guide ports (34) are provided, a gas delivery device (4) is installed above each of the air guide ports (34), an air guide pipe (41) is fixedly connected below the gas delivery device (4), the air guide pipe (41) is in communication with the gas delivery device (4), the lower end of the air guide pipe (41) is connected to the air guide port (34), an opening is arranged above the gas delivery device (4), the piston rod (42) is vertically slidably connected in the opening of the gas delivery device (4), a sealing head (43) is installed at the end of the piston rod (42) located in the gas delivery device (4), and the sealing head (43) separates the internal space of the gas delivery device (4); The end of the piston rod (42) located outside the gas delivery device (4) is fixedly connected to a lifting plate (44), a first spring (45) is arranged above the lifting plate (44), the lower end of the first spring (45) is fixedly connected to the upper surface of the lifting plate (44), the upper end of the first spring (45) is fixedly connected to the inner wall of the gate (3), and the portion of the piston rod (42) located below the lifting plate (44) is sleeved with a fixing ring (46), and the fixing ring (46) is fixedly connected to the outer wall of the piston rod (42); First connecting rods (47) are fixedly connected to the side walls of the fixing ring (46), the first connecting rods (47) in the two gates (3) are arranged facing each other, the outer ends of the first connecting rods (47) are fixed to the rotating rod (48), and the two ends of the rotating rod (48) are fixedly connected to limit blocks (49), the limit blocks (49) are arranged in the limit groove (11), the limit blocks (49) are movably connected to the limit groove (11), and the limit groove (11) is installed on the inner wall of the concrete support (1); Brackets (6) are installed above both sides of the concrete support (1), the brackets (6) are arranged in a U-shape, and the two ends of the brackets (6) are installed above the concrete support (1) by bolts, and a movable plate (7) is slidably connected to the inside of the bracket (6), and the two ends of the movable plate (7) are respectively fixedly connected to movable rings (71), and the movable rings (71) are respectively sleeved on the brackets (6), and the movable rings (71) are horizontally slidably connected to the brackets (6), and two groups of movable plates (7) are provided, and the movable plates (7) are respectively arranged on the same side above the two gates (3); The movable plate (7) is fixedly connected to fixed seats (8) at both sides below the movable plate (7), a butt plate (81) is arranged below the fixed seat (8), the butt plate (81) is arranged in a Z shape, the lower inner wall of the butt plate (81) butts against the upper part of the gate (3), a lifting rod (82) is fixedly connected to the upper part of the butt plate (81), the lifting rod (82) is arranged in a plurality of groups, a lifting groove (83) corresponding to the lifting rod (82) is arranged below the fixed seat (8), the lifting rod (82) is inserted into the lifting groove (83), the lifting rod (82) is slidably connected to the lifting groove (83), a spline (84) is arranged on the inner wall of the bottom of the lifting groove (83), and the spline (84) is inserted into the spline groove of the outer wall of the lifting rod (82); A second spring (85) is arranged above the lifting rod (82), one end of the second spring (85) is fixedly connected to the top of the lifting rod (82), the other end of the second spring (85) is fixedly connected to the inner wall of the lifting groove (83), a push rod (86) is arranged in the middle of the second spring (85), the push rod (86) passes through the movable plate (7), a push block (87) is fixedly connected above the push rod (86), the outer side of the push block (87) extends to the top of the movable ring (71), a positioning rod (88) is fixedly connected below the push block (87), a plurality of positioning holes (61) are arranged above the bracket (6), and the positioning rod (88) is plugged and fixed to the positioning holes (61).

2. The lateral hydraulic tightening device for gate for maintenance according to claim 1 is characterized in that: The fixing frame (2) is arranged in a U-shape, the lower end of the fixing frame (2) is fixedly connected to the inner lower side of the concrete support (1), the inner walls on both sides of the fixing frame (2) are respectively fixedly connected with guide rails (21), the gate (3) is arranged in the guide rails (21), the two ends of the gate (3) are respectively fixedly connected with movable blocks (31), the movable blocks (31) are arranged in the guide rails (21), the movable blocks (31) are vertically slidably connected to the guide rails (21), and the movable blocks (31) are rotatably connected to the inner wall of the fixing frame (2).

3. The lateral hydraulic tightening device for gate for maintenance according to claim 1, characterized in that: The hypotenuse surfaces of the first trapezoidal block (5) and the second trapezoidal block (51) are both provided with sealing pads (52); the first trapezoidal block (5) and the second trapezoidal block (51) are both in sealing contact with the lower part of the connecting seat (32) via the sealing pads (52); the first trapezoidal block (5) and the second trapezoidal block (51) are fixedly connected via a plurality of second connecting rods (54); a hydraulic cylinder (53) is provided at a position of the first trapezoidal block (5) away from the second trapezoidal block (51); the hydraulic cylinder (53) drives the first trapezoidal block (5) and the second trapezoidal block (51) to move.

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