Hydraulic control device for mechanical grabbing beam of hydropower station portal crane

Abstract

The utility model belongs to the technical field of hydropower stations, and particularly relates to a hydraulic control device for a mechanical grabbing beam of a hydropower station portal crane. The number of the hooks is two, and the top ends of the two hooks are rotationally connected to the bottom of the grabbing beam lifting appliance; the number of the hydraulic push rods is two, the top ends of the two hydraulic push rods are rotationally connected to the bottom of the grabbing beam lifting appliance, and output shafts of the hydraulic push rods are rotationally connected to the corresponding hooks; the number of the video recorders is two, the two video recorders are fixedly installed at the bottom of the grabbing beam lifting appliance, and the video recorders are matched with the corresponding hooks; the hydraulic pump station is fixedly mounted at the top of the grabbing beam lifting appliance; according to the utility model, through a simple structure, the automatic hooking and unhooking operation of a network on the gate is realized, the hydraulic operation safety and stability are high, the whole process is visually monitored, the operation is visual and reliable, and the practicability is strong.

Description

Technical Field

[0001] The utility model relates to the technical field of hydropower stations, in particular to a hydraulic control device for a mechanical grab beam of a gantry crane of a hydropower station. Background Art

[0002] In the prior art, when the existing mechanical grab beam is in use, there is no means of observation during the gate operation process, and whether the operation is successful depends entirely on feeling, which is very unreliable. It may be impossible to hook or unhook the gate. If one side of the gate is unhooked, a diver must be sent to operate it, which has poor safety. For this reason, we propose a hydraulic control device for the mechanical grab beam of a hydropower station gantry crane to solve the above problems. Utility Model Content

[0003] The utility model aims to solve the problem that when the mechanical grab beam is used in the prior art, there is no means for observation during the gate operation process, and whether the operation is successful depends entirely on feeling, which is very unreliable, and the situation that the hook cannot be hung or unhooked may occur. If the gate is unhooked on one side, a diver must be sent to operate it, and the use safety is poor. A hydraulic control device for the mechanical grab beam of a hydropower station gantry crane is proposed.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A hydraulic control device for a mechanical grab beam of a hydropower station gantry crane, comprising:

[0006] Grab beam sling;

[0007] Two hooks are provided, and the top ends of the two hooks are rotatably connected to the bottom of the grab beam sling;

[0008] Two hydraulic push rods are provided, the top ends of the two hydraulic push rods are rotatably connected to the bottom of the grab beam sling, and the output shafts of the hydraulic push rods are rotatably connected to the corresponding hooks;

[0009] Video recorders, which are provided in two, are fixedly mounted at the bottom of the grab beam sling, and the video recorders are matched with corresponding hooks;

[0010] A hydraulic pump station, wherein the hydraulic pump station is fixedly installed on the top of the grab beam spreader;

[0011] A sealing box, wherein the sealing box is fixedly mounted on the top of the grab beam hanger;

[0012] A cable basket is fixedly installed on the top of the grab beam hanger.

[0013] As a preferred solution of the utility model, two first mounting grooves are provided at the bottom of the grab beam sling, and the top end of the hook is rotatably connected in the corresponding first mounting groove. Two second mounting grooves are provided at the bottom of the grab beam sling, and the top end of the hydraulic push rod is rotatably connected inside the corresponding second mounting groove.

[0014] As a preferred solution of the utility model, two connecting pieces are fixedly installed on the top of the grab beam sling.

[0015] Beneficial effects:

[0016] 1. The hook and gate are connected and uncoupled by hydraulic push rods. Since the hydraulic push rods carry system pressure during operation, the operation is reliable and there will be no uncoupling phenomenon.

[0017] 2. By designing an underwater video recorder at the connection point between each hook and the gate, the entire process of hooking and unhooking between the hook and the gate can be monitored by video. The gate can only be raised and lowered when the hook and the gate are connected or unhooked, ensuring the safe and stable opening and closing of the gate;

[0018] 3. The hydraulic pump station provides hydraulic power to the hydraulic push rod and operates the solenoid valve, which realizes the push and retraction of the hydraulic push rod;

[0019] 4. The sealed box can withstand 100m underwater safety sealing. Communication modules, switches and other electrical components are installed in the sealed box to achieve underwater video monitoring and hydraulic operation of hydraulic push rods;

[0020] 5. There is a special underwater sealing cable in the cable basket, which comes out of the cable basket and connects to the underwater sealing box. The joint is a specially designed underwater locking head with good sealing performance and can be disassembled;

[0021] The utility model realizes the hooking and unhooking operation of the gate by network automation through a simple structure, and the hydraulic operation has high safety and stability, full-process visual monitoring, intuitive and reliable operation, and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional top view of the structure of the utility model;

[0023] Figure 2 It is a three-dimensional bottom view of the structure of the utility model;

[0024] Figure 3 It is a three-dimensional structural diagram of the hook and hydraulic push rod of the utility model;

[0025] Figure 4 This is a system block diagram of the utility model.

[0026] In the figure: 1. Grab beam sling; 2. First mounting slot; 3. Hook; 4. Second mounting slot; 5. Hydraulic push rod; 6. Video recorder; 7. Hydraulic pump station; 8. Sealing box; 9. Cable basket. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] Example

[0029] Reference Figure 1-Figure 4 , a hydraulic control device for a mechanical grab beam of a hydropower station gantry crane, comprising:

[0030] Grab beam sling 1;

[0031] Two hooks 3 are provided, and the top ends of the two hooks 3 are rotatably connected to the bottom of the beam grabbing sling 1 through shafts;

[0032] The hydraulic push rods 5 are provided in two numbers, the top ends of the two hydraulic push rods 5 are both rotatably connected to the bottom of the grab beam hanger 1 through shafts, and the output shafts of the hydraulic push rods 5 are rotatably connected to the corresponding hooks 3 through shafts;

[0033] Video recorders 6, which are provided in two numbers, both of which are fixedly mounted on the bottom of the grab beam sling 1, and the video recorders 6 cooperate with the corresponding hooks 3;

[0034] A hydraulic pump station 7, which is fixedly installed on the top of the grab beam spreader 1;

[0035] A sealing box 8, which is fixedly mounted on the top of the grab beam hanger 1;

[0036] The cable basket 9 is fixedly mounted on the top of the grab beam hanger 1 .

[0037] By means of the above structure: the hook 3 and the gate are hooked and unhooked by the hydraulic push rod 5. Because the hydraulic push rod 5 carries system pressure during operation, the operation is reliable and there will be no unhooking. By designing an underwater video recorder 6 at each connection between the hook 3 and the gate, the hooking and unhooking process between the hook 3 and the gate can be monitored by video throughout the whole process. The gate can be raised and lowered only when the hook 3 and the gate are hooked or unhooked at the connection, thereby ensuring the safe and stable switching of the gate. The hydraulic pump station 7 provides hydraulic power and an operating solenoid valve to the hydraulic push rod 5, and the hydraulic push rod 5 is pushed out and retracted by the solenoid valve. The sealing box 8 can withstand a safe seal of 100m underwater. Electrical components such as communication modules and switches are installed in the sealing box 8 to realize underwater video monitoring and hydraulic operation of the hydraulic push rod 5. There is a special underwater sealing cable in the cable basket 9, which comes out of the cable basket 9 and is connected to the underwater sealing box 8. The joint is a specially designed underwater locking head with good sealing performance and is detachable.

[0038] As a preferred solution of the utility model, two first mounting grooves 2 are provided at the bottom of the grab beam hoist 1, and the top end of the hook 3 is connected to the corresponding first mounting groove 2 by an axis rotation. Two second mounting grooves 4 are provided at the bottom of the grab beam hoist 1, and the top end of the hydraulic push rod 5 is connected to the inside of the corresponding second mounting groove 4 by an axis rotation. By setting the first mounting groove 2 and the second mounting groove 4, the hook 3 and the hydraulic push rod 5 can be easily installed, and the hook 3 and the hydraulic push rod 5 can be easily moved.

[0039] As a preferred solution of the utility model, two connecting pieces are fixedly installed on the top of the grab beam sling 1. By providing the connecting pieces, the grab beam sling 1 can be firmly fixed to the gantry crane installation surface in the gantry crane room of the hydropower station.

[0040] It should be noted that the specific types of hydraulic push rod 5, video recorder 6 and hydraulic pump station 7 to be used are selected by relevant technical personnel familiar with the field, and the above hydraulic push rod 5, video recorder 6 and hydraulic pump station 7 are all existing technologies and will not be elaborated in this solution.

[0041] The working principle of the utility model is as follows: when in use, firstly connect the external power supply, and then when the grab beam hoist 1 enters underwater to be hooked with the gate, the corresponding situation of the connection between the hook 3 and the gate is checked through the video recorder 6. When the corresponding situation is completed, the connection between the connection between the hook 3 and the gate is operated by the hydraulic push rod 5. Because the hydraulic push rod 5 carries the system pressure during the operation, the operation is reliable and there will be no unhooking phenomenon. By designing an underwater video recorder 6 at each connection between the hook 3 and the gate, the whole process of hooking and unhooking between the hook 3 and the gate can be monitored by video. Only when the hook 3 and the gate connection are hooked or unhooked can the gate be operated up and down, thereby ensuring the safe and stable switching of the gate. The sealing box 8 can withstand a safe seal of 100m underwater. The hydraulic pump station 7 provides hydraulic power and operates the solenoid valve to the hydraulic push rod 5. The solenoid valve is used to realize the push and retract of the hydraulic push rod 5. The sealing box 8 is equipped with electrical components such as communication modules and switches to realize underwater video monitoring and hydraulic operation of the hydraulic push rod 5. There is a special underwater sealing cable in the cable basket 9, which comes out of the cable basket 9 and is connected to the underwater sealing box 8. The joint is a specially designed underwater locking head with good sealing performance and is detachable. There is a locking device in the gantry machine room of the hydropower station to firmly fix the underwater special cable on the gantry machine installation surface. Each control line and power line in the cable is connected to the corresponding limit number of the terminal. Special control electrical appliances (oil pump motor control, solenoid valve control, network communication, etc.) are designed in the control cabinet. A matching display screen and video recording system are installed in the cab. The connection and uncoupling process between the gate connection and the hook 3 can be monitored on the display throughout the process. An operating mechanism is designed on the linkage operating table. The hook 3 is connected and uncoupled with the gate connection. The underwater pump station and the solenoid valve are operated in the cab to automatically connect and uncouple the hook 3 with the gate connection.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A hydraulic control device for a mechanical grab beam of a hydropower station gantry crane, characterized in that: include: Grab beam sling (1); There are two hooks (3), and the top ends of the two hooks (3) are rotatably connected to the bottom of the beam grabbing sling (1); A hydraulic push rod (5), which is provided in two pieces, the top ends of the two hydraulic push rods (5) are both rotatably connected to the bottom of the grab beam hanger (1), and the output shaft of the hydraulic push rod (5) is rotatably connected to the corresponding hook (3); A video recorder (6), which is provided in two pieces, and the two video recorders (6) are both fixedly mounted on the bottom of the grab beam sling (1), and the video recorders (6) are matched with corresponding hooks (3); A hydraulic pump station (7), wherein the hydraulic pump station (7) is fixedly installed on the top of the grab beam sling (1); A sealing box (8), wherein the sealing box (8) is fixedly mounted on the top of the grab beam sling (1); A cable basket (9) is fixedly mounted on the top of the grab beam sling (1).

2. A hydraulic control device for a mechanical grab beam of a hydropower station gantry crane according to claim 1, characterized in that: The bottom of the beam grabbing sling (1) is provided with two first mounting grooves (2), the top end of the hook (3) is rotatably connected in the corresponding first mounting groove (2), and the bottom of the beam grabbing sling (1) is provided with two second mounting grooves (4), the top end of the hydraulic push rod (5) is rotatably connected in the corresponding second mounting groove (4).

3. A hydraulic control device for mechanical grab beam of a hydropower station gantry crane according to claim 1, characterized in that: Two connecting pieces are fixedly mounted on the top of the grab beam sling (1).

Images