A kind of experimental device for hoist gate

Abstract

The present invention discloses a winch gate experimental device, which mainly solves the problems of learning difficulties and influence on learning progress under the existing technical conditions. The device includes a base, a left frame and a right frame arranged on the base, a fixed winch-type gate opening and closing machine set on the left frame and the right frame, a flat gate connected to the gate opening and closing machine set, and an electrical control system for sending control signals to the fixed winch-type gate opening and closing machine set. Through the above design, the present invention can enable new employees to understand the learning content more deeply, more specifically and more clearly. At the same time, the display of the model can also improve the imagination of new employees. It can be disassembled and assembled independently, and gate actions and gate failures can be simulated, and learners can be fully involved in the prevention, discovery, elimination and resolution of failures, which is convenient to use. Therefore, it has high use value and promotion value.

Description

Technical Field

[0001] The invention relates to an experimental teaching device, in particular to a winch gate experimental device. Background Art

[0002] At present, in the induction education and training of metal structures in hydropower stations, the structure and principle of metal structures are mostly learned on site by observing equipment, theoretical learning, or on site during the annual maintenance period. In addition, there are models on the market, but they cannot simulate all possible faults and only stay at the stage of understanding and recognition. The model is relatively rigid. If you want to learn the metal structure, you need a rich spatial imagination ability, which greatly suppresses the enthusiasm for learning and limits the teaching mode.

[0003] Observing static equipment on site does not allow us to understand some of the faults that may be encountered in actual equipment operation. In normal theoretical learning, we can only obtain some abstract knowledge. At the same time, the maintenance period is short and the task is heavy, which is not suitable for on-site teaching. The models on the market are too simple and can only simulate equipment operation, but cannot realize equipment decomposition, learning, research, independent programming, fault simulation, fault analysis, accident analysis, etc. Summary of the invention

[0004] The purpose of the present invention is to provide a winch gate experimental device, so that learners can intuitively understand the action of the deceleration mechanism that is usually invisible during the learning process, so that they can be familiar with the occurrence and response measures of various emergency situations before entering the workplace, and solve the problems of learning difficulties and influence on learning progress under existing technical conditions.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0006] A winch gate experimental device comprises a base, a left frame and a right frame arranged on the base, a fixed winch type hoisting and closing machine set on the left frame and the right frame, a flat gate connected to the hoisting and closing machine set, and an electrical control system for sending a control signal to the fixed winch type hoisting and closing machine set;

[0007] The fixed winch-type opening and closing machine unit includes a motor arranged on the left frame, a reducer arranged on the left frame and connected to the motor, a brake arranged on the left frame and located between the motor and the reducer, a transmission shaft connected to the reducer, a left lifting device arranged on the left frame and connected to the reducer, and a right lifting device arranged on the right frame and connected to the other end of the transmission shaft.

[0008] Furthermore, the left lifting device includes a gear arranged on the left frame and connected to the reducer, a drum arranged on the left frame and connected to the gear, fixed pulleys arranged on both sides of the left frame, a wire rope connected to the drum and used in conjunction with the fixed pulley, and a movable pulley group arranged at the lower end of the wire rope and connected to the wire rope for winding; wherein the end of the wire rope passing through the movable pulley group is connected to the flat gate.

[0009] Furthermore, the right lifting device has the same structure as the left lifting device, and the gear of the right lifting device is connected to the other end of the transmission shaft.

[0010] Furthermore, the electrical control system includes a human-machine interaction interface, an electrical control cabinet connected to the human-machine interaction interface and equipped with a PLC controller, a rotary encoder connected to the PLC controller and arranged on the rotating shaft of the drum of the right lifting device, two sets of lateral pressure tension weighing sensors arranged on the wire ropes of the left and right lifting devices and connected to the PLC controller for measuring the tension of the wire ropes, and two sets of gravity detection devices arranged on the left and right frames and connected to the PLC controller for measuring the gravity changes of the flat gate.

[0011] Furthermore, the gravity detection device includes a support frame connected to the left frame or the right frame, an eccentric lever connected to the support frame through a fulcrum, a tension frame connected to the fulcrum end of the eccentric lever, a balance wheel connected to the tension frame for winding through a movable pulley group, and a column load sensor arranged at the end of the support frame for measuring pressure changes from the eccentric lever; wherein the column load sensor is connected to a PLC controller.

[0012] Furthermore, the lower parts of the left and right frames are fixedly connected to the base via gate supports for clamping the flat gates, and channel steel through holes for limiting and fixing the flat gates are provided at the upper ends of the gate supports and the lower ends of the corresponding positions after the flat gates are lifted.

[0013] Furthermore, a lifting lug for connecting to a steel wire rope is provided at the top of the flat gate, and a side wheel is provided on one side of the front and rear sides of the flat gate, and a fixed wheel is provided on the other side.

[0014] Furthermore, a top water-stop water seal is arranged on the front panel of the planar gate, side water-stop water seals are arranged on both sides of the planar gate, and a bottom water seal is arranged on the bottom of the flat plate gate.

[0015] Furthermore, a movable roller is provided at the lower end of the base.

[0016] Furthermore, the reducer housing is made of transparent glass material.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) The present invention enables new employees to understand the learning content more deeply, more specifically and more clearly. At the same time, the display of the model can also improve the imagination of new employees. It can be disassembled and assembled independently, simulate gate actions and gate failures, and allow learners to fully participate in the prevention, discovery, elimination and resolution of failures, which is convenient to use.

[0019] (2) The present invention can simulate the difference between the upper and lower water stops of a flat gate by setting up detachable side wheels and water seals. The traditional flat gate water seal can only use the upper or lower water stop according to the actual situation on site, and cannot be used for comparative teaching. The detachable water seal can simulate the replacement of the water seal after damage at any time. In traditional technology, the water seal replacement can only be carried out during the maintenance period, which enhances the students' practical operation skills.

[0020] (3) The gate of the present invention is made of aluminum alloy, and its weight can protect the safety of the mini gate experimental device and the experimenters to a great extent, and will not cause damage and harm when performing various fault simulations.

[0021] (4) The reduction gearbox of the present invention is made of transparent fiberglass, which can simulate the jamming of the transmission gears in the reduction gearbox, the unqualified gear oil quality and other faults more clearly and intuitively.

[0022] (5) The brake system of the present invention can be taught in terms of disassembly, installation, troubleshooting, etc., so that trainees can intuitively learn the internal structure and principle of the brake system before entering the job.

[0023] (6) The present invention provides movable rollers at the bottom of the gate support, so that the mini model is not restricted by the teaching location and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention (excluding the electrical control system).

[0025] Figure 2 It is a top view of the present invention.

[0026] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure along the AA direction.

[0027] Figure 4 for Figure 1 Schematic diagram of the gravity detection device structure in part B.

[0028] The names corresponding to the reference numerals are:

[0029] 1-base, 2-left frame, 3-right frame, 4-flat gate, 5-motor, 6-reducer, 7-brake, 8-drive shaft, 9-gear, 10-drum, 11-fixed pulley, 12-wire rope, 13-moving pulley block, 14-rotary encoder, 15-lateral pressure type tension weighing sensor, 16-support frame, 17-fulcrum, 18-eccentric lever, 19-tension frame, 20-balance wheel, 21-column load sensor, 22-gate support, 23-channel steel through hole, 24-lifting ear, 25-side wheel, 26-fixed wheel, 27-moving roller. DETAILED DESCRIPTION

[0030] The present invention is further described below in conjunction with the accompanying drawings and embodiments. The embodiments of the present invention include but are not limited to the following embodiments.

[0031] Example

[0032] like Figures 1 to 4 As shown, a winch gate experimental device disclosed in the present invention comprises a base 1, a left frame 2 and a right frame 3 arranged on the base 1, a winch-type hoisting and closing machine set fixed on the left frame 2 and the right frame 3, a flat gate 4 connected to the hoisting and closing machine set, and an electrical control system for sending a control signal to the fixed winch-type hoisting and closing machine set;

[0033] The fixed winch type hoisting machine unit includes a motor 5 arranged on the left frame 2, a reducer 6 arranged on the left frame 2 and connected to the motor 5, a brake 7 arranged on the left frame 2 and located between the motor 5 and the reducer 6, a transmission shaft 8 connected to the reducer 6, a left lifting device arranged on the left frame 2 and connected to the reducer 6, and a right lifting device arranged on the right frame 3 and connected to the other end of the transmission shaft 8. The housing of the reducer 6 is made of transparent glass material, which is more clear and intuitive when simulating the transmission gear in the reduction box getting stuck, the gear oil quality is unqualified, and other faults.

[0034] The brake 7 adopts an electric hydraulic block brake, which can simulate brake failure, brake failure, and other faults, making it easy to explore the cause of the fault and find a solution. It is also possible to conduct on-site teaching on the disassembly, installation, brake clearance adjustment, and brake pad replacement of the brake, so as to conveniently and intuitively show the trainees the brake structure and operating principle and how to overhaul and maintain it. This type of brake system is similar to the brake system used in most traditional fixed winch hoists, but traditional technology can only perform brake clearance and brake pad replacement during the overhaul period, which limits the further learning of trainees.

[0035] The left lifting device includes a gear 9 arranged on the left frame 2 and connected to the reducer 6, a drum 10 arranged on the left frame 2 and connected to the gear 9, fixed pulleys 11 arranged on both sides of the left frame 2, a wire rope 12 connected to the drum 10 and used in conjunction with the fixed pulley 11, and a movable pulley block 13 arranged at the lower end of the wire rope 12 and used in conjunction with the wire rope 12 for winding; wherein the end of the wire rope 12 passing through the movable pulley block 13 is connected to the flat gate 4. The right lifting device has the same structure as the left lifting device, except that the gear 9 of the right lifting device is connected to the other end of the transmission shaft 8.

[0036] The electrical control system includes a human-machine interaction interface, an electrical control cabinet connected to the human-machine interaction interface and equipped with a PLC controller, a rotary encoder 14 connected to the PLC controller and arranged on the rotating shaft of the drum 10 of the right lifting device, two sets of lateral pressure tension weighing sensors 15 arranged on the wire ropes 12 of the left and right lifting devices and connected to the PLC controller for measuring the tension of the wire ropes 12, and two sets of gravity detection devices arranged on the left frame 2 and the right frame 3 and connected to the PLC controller for measuring the gravity change of the flat gate.

[0037] The gravity detection device is mainly realized by the lever principle, and includes a support frame 16 connected to the left frame 2 or the right frame 3, an eccentric lever 18 connected to the support frame 16 through a fulcrum 17, a tension frame 19 connected to the fulcrum 17 end of the eccentric lever 18, a balance wheel 20 connected to the tension frame 19 for winding through the movable pulley block 13, and a column load sensor 21 arranged at the end of the support frame 16 for measuring the pressure change from the eccentric lever 18; wherein the column load sensor 21 is connected to the PLC controller. When the gate is hoisted, the wire rope is forced to pull down the tension frame 19, so that the right end of the eccentric lever presses down on the column load sensor 21, thereby realizing pressure detection, thereby changing to gate gravity change detection.

[0038] The acquisition and conversion of the gate opening are realized through a rotary encoder and a PLC controller. During the operation of the gate, the rotary encoder transmits the mechanical displacement of the gate to the PLC controller through an electrical signal, and finally displays the real-time gate opening on the human-computer interaction interface.

[0039] Two sets of weighing sensors are set on the left and right sides of the gate. The weighing sensors use lateral pressure tension weighing sensors and column load sensors. The lateral pressure tension weighing sensors are installed on the wire rope. The tension deformation of the wire rope under different tensions transmits electrical signals to the PLC system through the sensor, and finally the real-time load of the left and right sides of the gate is displayed on the human-computer interaction interface.

[0040] The column pressure load sensor is installed on the left and right racks. When the sensor is subjected to pressure, it converts the pressure into an electrical signal and transmits it to the PLC system. Finally, the real-time load of the left and right sides of the gate is displayed on the human-computer interaction interface, realizing the gate opening simulation teaching.

[0041] The reason why the side pressure tension load cell and column load cell 21 are used to measure the gate gravity change is to compare the advantages and disadvantages of the two measurement methods, as well as the feasibility and reliability of changing one measurement method to another. Enhance the learning experience of the experimental device.

[0042] The left frame 2 and the right frame 3 are fixedly connected to the base 1 through a gate support 22 for clamping the flat gate 4. The upper end of the gate support 22 and the lower end of the corresponding position after the flat gate 4 is lifted are provided with a channel steel through hole 23 for limiting and fixing the flat gate 4. After the gate is lifted, the flat gate can be suspended and fixed by inserting an I-shaped channel steel into the channel steel through hole 23 to avoid long-term stress on the wire rope.

[0043] The flat gate is made of aluminum alloy, and its weight can protect the safety of the mini gate experimental device and the experimenters to a great extent, and will not cause damage and harm when conducting various fault simulations. A lifting lug 24 for connecting to the wire rope 12 is provided at the top of the flat gate 4, and a detachably connected side wheel 25 is provided on one side of the front and rear sides of the flat gate 4, and a fixed wheel 26 is provided on the other side. There are four side wheels 25 and four fixed wheels 26, which are used for guiding during the lifting process of the flat gate. The front panel of the flat gate 4 is connected to a top water-stop water seal, the two sides of the flat gate 4 are provided with side water-stop water seals, and the bottom of the flat gate 4 is provided with a bottom water seal. All water seals are detachably connected to the flat gate 4, and two corresponding lifting lugs are provided; the side wheel 25 and the other side are provided with a fixed wheel 26. The detachable water seal can simulate the replacement of the water seal after damage at any time. In traditional technology, the replacement of the water seal can only be carried out during the maintenance period. It cannot be used flexibly. The top water seal and the side water seal generally adopt B-type water seal rubber, and the bottom water seal adopts plate-shaped water seal rubber.

[0044] In order to facilitate the movement of the entire device and to allow the mini model to be free from restrictions on the teaching location, a movable roller 27 is provided at the lower end of the base 1 .

[0045] Through the above design, the present invention can enable new employees to understand the learning content more deeply, more specifically and more clearly. At the same time, the display of the model can also improve the imagination of new employees. It can be disassembled and assembled independently, simulate gate actions and gate failures, and allow learners to fully participate in the prevention, discovery, elimination and resolution of failures, which is convenient to use. Therefore, it has high use value and promotion value.

[0046] The above embodiment is only one of the preferred implementation modes of the present invention and should not be used to limit the protection scope of the present invention. Any changes or modifications that are made to the main design concept and spirit of the present invention and have no substantive significance, and the technical problems they solve are still consistent with the present invention, should be included in the protection scope of the present invention.

Claims

1. A hoist gate test device, characterized in that: It comprises a base (1), a left frame (2) and a right frame (3) arranged on the base (1), a fixed winch-type door-opening machine set arranged on the left frame (2) and the right frame (3), a flat gate (4) connected to the door-opening machine set, and an electrical control system for sending control signals to the fixed winch-type door-opening machine set; The fixed winch-type hoisting and closing machine unit comprises a motor (5) arranged on the left frame (2), a reducer (6) arranged on the left frame (2) and connected to the motor (5), a brake (7) arranged on the left frame (2) and located between the motor (5) and the reducer (6), a transmission shaft (8) connected to the reducer (6), a left lifting device arranged on the left frame (2) and connected to the reducer (6), and a right lifting device arranged on the right frame (3) and connected to the other end of the transmission shaft (8); The electrical control system comprises a human-machine interaction interface, an electrical control cabinet connected to the human-machine interaction interface and having a PLC controller, a rotary encoder (14) connected to the PLC controller and arranged on the rotating shaft of the drum (10) of the right lifting device, two sets of lateral pressure type tension weighing sensors (15) arranged on the steel wire ropes (12) of the left lifting device and the right lifting device and connected to the PLC controller for measuring the tension of the steel wire ropes (12), and two sets of gravity detection devices arranged on the left frame (2) and the right frame (3) and connected to the PLC controller for measuring the gravity change of the flat gate; The gravity detection device comprises a support frame (16) connected to the left frame (2) or the right frame (3), an eccentric lever (18) connected to the support frame (16) via a fulcrum (17), a tension frame (19) connected to the fulcrum (17) end of the eccentric lever (18), a balance wheel (20) connected to the tension frame (19) and wound through a movable pulley block (13), and a column load sensor (21) arranged at the end of the support frame (16) and used to measure the pressure change from the eccentric lever (18); wherein the column load sensor (21) is connected to a PLC controller; The top of the flat gate (4) is provided with a lifting lug (24) for connecting to a steel wire rope (12); one of the front and rear sides of the flat gate (4) is provided with a side wheel (25) and the other side is provided with a fixed wheel (26); four of each of the side wheels (25) and the fixed wheel (26) are provided.

2. A hoist gate test device according to claim 1, characterized in that: The left lifting device comprises a gear (9) arranged on the left frame (2) and connected to the reducer (6), a drum (10) arranged on the left frame (2) and connected to the gear (9), fixed pulleys (11) arranged on both sides of the left frame (2), a steel wire rope (12) connected to the drum (10) and used in conjunction with the fixed pulley (11), and a movable pulley block (13) arranged at the lower end of the steel wire rope (12) and connected to the steel wire rope (12) by winding; wherein the end of the steel wire rope (12) passing through the movable pulley block (13) is connected to the flat gate (4).

3. A hoist gate test device according to claim 2, characterized in that: The right lifting device has the same structure as the left lifting device, and the gear (9) of the right lifting device is connected to the other end of the transmission shaft (8).

4. A hoist gate test device according to claim 3, characterized in that: The left frame (2) and the right frame (3) are fixedly connected to the base (1) via a gate support (22) for clamping the flat gate (4), and a channel steel through hole (23) for limiting and fixing the flat gate (4) is provided at the upper end of the gate support (22) and the lower end of the corresponding position after the flat gate (4) is lifted.

5. A hoist gate test device according to claim 4, characterized in that: The front panel of the flat gate (4) is provided with a top water-stopping water seal, the two side surfaces of the flat gate (4) are provided with side water-stopping water seals, and the bottom of the flat gate (4) is provided with a bottom water seal.

6. A hoist gate test device according to claim 5, characterized in that: A movable roller (27) is provided at the lower end of the base (1).

7. A hoist gate test device according to claim 6, characterized in that: The housing of the reducer (6) is made of transparent glass material.

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