Portable teaching control box of alternating current switch machine

Abstract

The utility model relates to the technical field of experimental training teaching equipment, and discloses a portable teaching control box for an alternating current switch machine, which comprises a teaching box main body, a frequency converter, a fuse, a switching power supply, a plurality of transformers and a plurality of relays are arranged in the teaching box main body, and a bottom bracket is arranged at the bottom of the teaching box main body. Universal wheels are rotatably connected to the four corners of the bottom surface of the bottom support, side supports are fixedly connected to the two ends of the bottom support, sliding grooves are formed in the two sides of the interior of each side support, sliding blocks are slidably connected to the interiors of the sliding grooves, a protruding block fixedly connected with the sliding blocks is arranged between the two sliding blocks, and the protruding blocks are fixedly connected with the side walls of the teaching box body. According to the portable teaching control box for the alternating-current switch machine, all devices in a five-wire system turnout mechanical room are covered inside, when the portable teaching control box is used for teaching, only the teaching box body needs to be connected with the external switch machine, the portable teaching control box can be used, and compared with equipment which is high in price and large in size in the mechanical room, needed space and cost are smaller; and on-demand exercise can be conveniently carried out at any time.

Description

TECHNICAL FIELD

[0001] The utility model relates to experimental training teaching equipment technical field, concretely is portable teaching control box of alternating switch machine. BACKGROUND

[0002] Switcher is the conversion device of turnout, is used for realizing conversion turnout, locking turnout and reflecting the position of turnout point rail. However, in reality, after these precise switch equipment is put into operation, workers often have difficulty in understanding and mastering the complex structure inside by using limited maintenance window time, which makes the job numerical value generally not high, not only the maintenance efficiency is low, but also the disposal ability when dealing with sudden failure is also inadequate. In order to improve the quality of workers, usually, training platform is used for daily training.

[0003] Such as patent authorized announcement number CN204884260U, discloses a kind of railway experimental training teaching equipment, including training table, control cabinet and main control circuit, control cabinet is positioned on training table by support plate, and safety relay and circuit breaker are positioned on support plate;Track light band, operating button, indicating lamp, signal repeater, ammeter and liquid crystal display are provided on the operating control panel of control cabinet;Main control circuit includes power module, switching unit module, 6502 electrical centralized control circuit, computer interlocking control circuit and turnout control unit circuit.This kind of railway experimental training teaching equipment training platform occupies small area, low manufacturing cost and can carry out multiple experimental training projects, can efficiently learn turnout control unit and learn computer interlocking control principle, meet the demand of railway electric service department and railway college on-site teaching.

[0004] The above-mentioned railway experimental training teaching equipment still has certain defects:

[0005] The teaching equipment used in railway experimental training is often heavy and occupies a wide area, which brings many challenges in management and use. Because these equipments are heavy and large, it is difficult to flexibly schedule according to the actual needs of teaching practice. Whenever the practice project needs to be changed or the teaching scene needs to be adjusted, teachers and students have to face the problem of equipment transportation, which makes it difficult to use the equipment as needed at any time, affecting the smoothness of teaching. UTILITY MODEL CONTENT

[0006] In view of the deficiencies of the prior art, the utility model provides a portable teaching control box of alternating switch machine, so that the teaching equipment can be moved for use at any time as needed.

[0007] To achieve the above object, the utility model provides the following technical scheme: portable teaching control box of alternating current switch machine, including teaching box main part, the inside installation of teaching box main part has frequency changer, fuse, switching power supply, a plurality of transformers and a plurality of relays, the bottom of teaching box main part is equipped with bottom support, the four corners of bottom support bottom surface all are rotatably connected with universal wheel, the both ends of bottom support all are fixed with side support, the both sides in the inside of side support all are equipped with sliding slot, the inside sliding connection of sliding slot has sliding block, the both sides between two sliding blocks are equipped with and is fixed with the protruding block of it, the protruding block is fixed with the side wall of teaching box main part.

[0008] Further, the top of the side support is hingedly connected with a support rod, the top of the side support is rotatably connected with a guide wheel, the top of the end of the protruding block away from the support rod is fixed with a traction rope, the other end of the traction rope is fixed with the support rod over the top of the guide wheel.

[0009] Further, the side of the protruding block away from the teaching box main body is provided with a receiving groove, the inside of the receiving groove is slidably connected with a sliding rod, the end of the sliding rod away from the teaching box main body is fixed with a connecting plate, the end of the connecting plate close to the support rod is fixed with a limiting block, the limiting block is matched with the support rod.

[0010] Further, the end of the sliding rod close to the connecting plate is sleeved with an elastic member, one end of the elastic member is fixed with the sliding rod, the other end of the elastic member is fixed with the receiving groove close to the connecting plate.

[0011] Further, the side of the connecting plate away from the protruding block is fixed with a gripping block.

[0012] Further, the side of the side support close to the support rod is fixed with a baffle, the side of the baffle away from the teaching box main body is located on the same plane with the side of the support rod.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The portable teaching control box of alternating current switch machine, which covers all equipment in the five-wire system turnout mechanical room, can be used by connecting the teaching box main body with external switch machines, and has smaller space and cost than the expensive and large equipment in the mechanical room, and can be used at any time as needed. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the whole three-dimensional structure schematic diagram of the utility model;

[0016] Figure 2 It is the three-dimensional structure schematic diagram of the utility model teaching box main part after lifting;

[0017] Figure 3 It is the three-dimensional structure schematic diagram of the utility model teaching box main part after lifting;

[0018] Figure 4 This is a partial cross-sectional view of the protrusion of this utility model.

[0019] In the diagram: 1. Main body of the teaching box; 2. Bottom support; 3. Casters; 4. Side support; 5. Slide groove; 6. Protrusion; 7. Slider; 8. Support rod; 9. Guide wheel; 10. Traction rope; 11. Baffle; 12. Limiting block; 13. Connecting plate; 14. Storage slot; 15. Slide rod; 16. Elastic element; 17. Grip block. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Please see Figures 1-4 A portable teaching control box for AC switch machines includes a main body 1. Inside the main body 1, there are frequency converters, fuses, switching power supplies, multiple transformers, and multiple relays. The bottom of the main body 1 is provided with a bottom bracket 2. Universal wheels 3 are rotatably connected to the four corners of the bottom surface of the bottom bracket 2. Side brackets 4 are fixed to both ends of the bottom bracket 2. Slide grooves 5 are opened on both sides inside the side brackets 4. Sliding sliders 7 are slidably connected inside the slide grooves 5. A protrusion 6 is fixedly connected between the two sliders 7. The protrusion 6 is fixedly connected to the side wall of the main body 1.

[0022] The portable teaching control box for AC switch machines in this utility model contains electronic components such as a frequency converter, fuses, switching power supply, multiple transformers, and multiple relays. These components are connected together by wires to form the control circuit, starting circuit, and indication circuit of a five-wire AC turnout, restoring various data (such as voltage and current values) on site. After connecting to a 220V single-phase power supply, the internal frequency converter and transformer convert the single-phase AC 220V into a 50Hz, 380V three-phase AC power supply for the AC switch machine starting circuit. At this time, one of the transformers can be connected to a neutral wire to supply the switching power supply for the AC switch machine control circuit; finally, the AC 220V power supply is stably converted to supply the turnout indication circuit; the main body 1 of the teaching box has a complete circuit structure and relay configuration, and can be designed to simulate circuit and mechanical faults for employees to practice. Since it contains all the equipment in the five-wire turnout mechanical room, it can be used by simply connecting the main body 1 of the teaching box to the external switch machine. Therefore, it requires less space and costs compared to the expensive and bulky equipment in the mechanical room, and is convenient to use and practice as needed.

[0023] like Figure 1 ,Figure 2 and Figure 3 As shown, a support rod 8 is hinged to the top of the side bracket 4, and a guide wheel 9 is rotatably connected to the top of the side bracket 4. A traction rope 10 is fixed to the top of the protrusion 6 at the end away from the support rod 8, and the other end of the traction rope 10 passes over the top of the guide wheel 9 and is fixed to the support rod 8.

[0024] like Figures 1 to 4 As shown, a storage groove 14 is provided on the side of the protrusion 6 away from the main body 1 of the teaching box. A slide rod 15 is slidably connected inside the storage groove 14. A connecting plate 13 is fixedly connected to the end of the slide rod 15 away from the main body 1 of the teaching box. A limit block 12 is fixedly connected to the end of the connecting plate 13 near the support rod 8. The limit block 12 matches the support rod 8.

[0025] Specifically, since the main body 1 of the teaching box is placed on the ground, its height is relatively low. Staff members must bend or squat during teaching and practice, which is inconvenient. To make teaching and practice more convenient, the support rod 8 can be rotated until it contacts the ground. During this rotation, the support rod 8 pulls the protrusion 6 upward via the traction rope 10, which in turn raises the main body 1 of the teaching box, making teaching and practice more comfortable for staff. When the main body 1 of the teaching box reaches its highest point (when the support rod 8 contacts the ground), the connecting plate 13 can be pushed, causing the bottom of the limiting block 12 to contact the top of the support rod 8 (e.g., ...). Figure 2 and Figure 3 As shown), this can both prevent the support rod 8 from rotating back to its original position, causing the support rod 8 to lose its supporting effect, and restrict the protrusion 6 to prevent the teaching box body 1 from falling back to its original position on its own.

[0026] When the main body of the teaching box 1 needs to fall back to its original position, the operator only needs to use the palm of the hand to support the protrusion 6 while using the thumb to push the connecting plate 13 away from the main body of the teaching box 1, so that the limiting block 12 is disengaged from the support rod 8, and then slowly lower the main body of the teaching box 1. The operation process is simple, convenient and easy to operate.

[0027] like Figure 4 As shown, an elastic element 16 is sleeved on one end of the slide rod 15 near the connecting plate 13. One end of the elastic element 16 is fixedly connected to the slide rod 15, and the other end of the elastic element 16 is fixedly connected to the end of the storage groove 14 near the connecting plate 13.

[0028] Specifically, the elastic element 16 pushes and restricts the slide bar 15 to prevent the connecting plate 13, which is fixed to the slide bar 15, from detaching from the protrusion 6 and causing the limiting block 12 to lose its restricting effect.

[0029] like Figure 4As shown, a gripping block 17 is fixed to the side of the connecting plate 13 away from the protrusion 6. Moving the connecting plate 13 is simpler and more convenient by using the gripping block 17.

[0030] like Figure 2 and Figure 3 As shown, a baffle 11 is fixed to the side of the side bracket 4 near the support rod 8. The side of the baffle 11 away from the main body 1 of the teaching box is on the same plane as the side of the support rod 8.

[0031] Specifically, with the baffle 11 installed, when the main body 1 of the teaching box is at its lowest point, the side wall of the limiting block 12 will abut against the baffle 11. In this way, when the support rod 8 is rotated to raise the main body 1 of the teaching box, the limiting block 12 will only move along the baffle 11 and will not collide with the support rod 8.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A portable teaching control box for AC switch machines, comprising a main body (1), characterized in that, The teaching box body (1) is equipped with a frequency converter, a fuse, a switching power supply, multiple transformers and multiple relays. The bottom of the teaching box body (1) is provided with a bottom bracket (2). The four corners of the bottom surface of the bottom bracket (2) are rotatably connected with casters (3). The two ends of the bottom bracket (2) are fixedly connected with side brackets (4). The two sides of the side bracket (4) are provided with sliding grooves (5). The sliding grooves (5) are slidably connected with sliders (7). There are protrusions (6) fixedly connected between the two sliders (7). The protrusions (6) are fixedly connected to the side wall of the teaching box body (1).

2. The portable teaching control box for AC switch machines according to claim 1, characterized in that, The top of the side bracket (4) is hinged to a support rod (8), and the top of the side bracket (4) is rotatably connected to a guide wheel (9). The top of the protrusion (6) away from the support rod (8) is fixedly connected to a traction rope (10), and the other end of the traction rope (10) passes over the top of the guide wheel (9) and is fixedly connected to the support rod (8).

3. The portable teaching control box for AC switch machines according to claim 2, characterized in that, The protrusion (6) has a storage groove (14) on the side away from the main body (1) of the teaching box. A slide rod (15) is slidably connected inside the storage groove (14). A connecting plate (13) is fixedly connected to one end of the slide rod (15) away from the main body (1). A limit block (12) is fixedly connected to one end of the connecting plate (13) near the support rod (8). The limit block (12) matches the support rod (8).

4. The portable teaching control box for AC switch machines according to claim 3, characterized in that, An elastic element (16) is fitted on one end of the slide rod (15) near the connecting plate (13). One end of the elastic element (16) is fixedly connected to the slide rod (15), and the other end of the elastic element (16) is fixedly connected to the end of the storage groove (14) near the connecting plate (13).

5. The portable teaching control box for AC switch machines according to claim 3 or 4, characterized in that, A gripping block (17) is fixed to the side of the connecting plate (13) away from the protrusion (6).

6. The portable teaching control box for AC switch machines according to claim 2, 3, or 4, characterized in that, A baffle (11) is fixed to the side of the side bracket (4) near the support rod (8). The side of the baffle (11) away from the main body of the teaching box (1) is on the same plane as the side of the support rod (8).

7. The portable teaching control box for AC switch machines according to claim 5, characterized in that, A baffle (11) is fixed to the side of the side bracket (4) near the support rod (8). The side of the baffle (11) away from the main body of the teaching box (1) is on the same plane as the side of the support rod (8).

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