CN1321015C - side collector - Google Patents

Abstract

The present invention discloses a lateral current collector. The present invention comprises a current collecting crosshead shoe, a tilting mechanism and a bottom board, wherein one end of the tilting mechanism is fixed to the bottom board, the other end of the tilting mechanism is connected with the current collecting crosshead shoe, and the tilting mechanism comprises a four bar linkage mechanism, an end swing link and an extension spring; the four bar linkage mechanism is a parallelogram four bar linkage mechanism formed by connecting a main swing link, an auxiliary swing link, a fork-shaped swing link and a main swing link support, the main swing link support is used as a machine frame, and the main swing link support is fixedly arranged on the bottom board; one end of the extension spring is connected with the main swing link through a spring pulling sleeve and a spring pulling rod, and the other end of the extension spring is connected with a spring pulling seat fixed to the bottom board; one end of the end swing link is connected with the fork-shaped swing link, and the other end of the end swing link is connected with the current collecting crosshead shoe. The present invention has simple and light structure, stable current collection, quick dynamic response, convenient maintenance and easy assembly and disassembly.

Description

side collector

technical field

The invention mainly relates to the field of current collectors, in particular to a lateral current collector suitable for a normally conducting maglev train.

Background technique

In the prior art, the supply of electric energy for medium and low-speed maglev trains and the supply of electric energy for high-speed maglev trains in the low-speed section are the same as subways and light rails. The electric energy is guided to the maglev train by means of dynamic contact and current receiving between the current receiving shoe and the power supply rail. In the three-rail power supply, there are three current receiving methods: upper current receiving (the friction receiving surface of the current receiving rail faces upward), lower current receiving (the friction receiving surface of the current receiving rail faces downward) and side current receiving (the friction receiving surface of the current receiving rail faces downward). The friction receiving surface stands sideways). For the upper current receiving mode, because the current receiving rail faces upward, it is easy to deposit dust and other impurities on the current receiving rail surface, which will aggravate the abrasive wear of the current receiving rail surface and the current receiving shoe, and at the same time cause the electric arc to form ablation wear. Heavy rain and snow can easily cause disadvantages such as unstable flow; for the lower flow method, the installation of the current collector increases the vehicle limit, and the icicles formed on the flow rail surface in freezing weather have a greater impact on stable and reliable flow , the pressure direction of the current receiving rail to the power receiving shoe is opposite to the suspension direction of the vehicle. Any fault in the movement mechanism of the current receiver will cause the vehicle's floating to be blocked, resulting in the difficulty of floating the whole vehicle. Therefore, The upper and lower flow receiving methods are generally suitable for subways and light rails. If the side flow method is adopted, since the flow rail is installed sideways, it is not easy to accumulate dust, rain and snow and other sundries on the friction surface of the flow rail, and the abrasive wear and arc ablation wear caused by the interference of impurities are greatly reduced. Because the track of the maglev train is in the form of an elevated bridge, the current receiving rail is installed laterally on both sides of the track beam. The current receiving friction surface of the current receiving rail is parallel to the side wall of the track beam and faces outward. When working, the current receiving device The current-collecting shoe expands and contracts toward the track beam, making the vehicle compact. At the same time, this side flow receiving method will not cause the vehicle to float due to the mechanical movement failure of the current collector, and will not affect the normal floating of the vehicle. Therefore, the maglev train adopts the three-rail and four-rail lateral current receiving mode, which has the characteristics of compact structure, safety, reliability, and stable current receiving.

In terms of invention patents for the third-rail current collector, there are two patents declared by Yongji Electric Machinery Factory: "Current collector with a three-rail device" (patent application number: 200510012350.0) and "Current collector" (patent Application number: 00261315.8). These two patent applications belong to the upper flow collection and lower flow collection methods respectively, and are only applicable to subways and light rails.

In terms of the research on the current receiver of the maglev train, Southwest Jiaotong University in China has done some research, and the research content is carried out in the paper "Development of the current receiver of the maglev train" ("Mechanical Research and Application", No. 4, 2002) The description also adopts the lateral flow collection method, and its basic principle is the combination of linear bearings and springs. The disadvantage is that the dynamic response of the mechanism is slow, and it is easy to cause unstable flow collection, which is not suitable for engineering applications. At the same time, with the change of the lateral position between the train and the track, the pressure between the flow-receiving shoe and the flow-receiving rail changes greatly, which is not conducive to stable flow; excessive pressure will increase the wear of the flow-receiving shoe and flow-receiving rail, and too small Pressure will cause unstable contact flow, the pressure must be kept within a reasonable range, excessive pressure changes are unfavorable to flow. There are also some lateral flow-receiving swing mechanisms that use a single pendulum mechanism, all of which are to compensate for the position change between the train and the flow-receiving rail and the wear of the flow-receiving shoe, and to always maintain a good connection between the flow-receiving shoe and the flow-receiving rail. Contact to achieve stable flow. When the train moves parallel to the flow-receiving rail in a direction perpendicular to the flow-receiving rail surface and the flow-receiving shoe wears, the swing mechanism will swing to compensate for the relative displacement. However, the single pendulum mechanism has obvious disadvantages. In the current receiver of the single pendulum mechanism, the current receiver slide shoe swings relative to the current receiver base, and the current receiver slide shoe and the current receiver rail surface present an included angle, and the included angle varies with the swing. In fact, the appearance of the included angle makes the line contact between the flow-receiving shoe and the flow-receiving rail, which is unfavorable for flow-receiving.

Contents of the invention

The technical problem to be solved by the present invention is: aiming at the technical problems existing in the prior art, the present invention provides a lateral current collector with simple and lightweight structure, stable flow receiving, fast dynamic response and convenient maintenance and assembly.

In order to solve the above technical problems, the solution proposed by the present invention is: a lateral current collector, which includes a flow collector shoe, a swing mechanism and a bottom plate, one end of the swing mechanism is fixed on the bottom plate, and the other end is connected to the flow collector shoe Connected, characterized in that: the swing mechanism includes a four-bar linkage mechanism, an end swing link and a tension spring, and the four-link mechanism is composed of a main swing link, an auxiliary swing link, a fork swing link and a main swing link support. A parallelogram four-bar linkage mechanism formed by connecting the main swing rod support as the frame, the main swing rod support is fixed on the bottom plate; one end of the extension spring is connected with the main swing rod through a spring pull sleeve and a spring pull rod, The other end is connected with the spring pull seat fixed on the bottom plate; one end of the last section of the swing rod is connected with the fork-shaped swing rod, and the other end is connected with the flow receiving shoe.

The last swing rod is connected to the base of the flow-receiving shoe through the hinge support of the last swing rod, and a torsion spring is fixed on the hinge base of the last swing rod, and one end of the torsion spring is pressed against the end of the last swing rod. on the hinge shaft.

The lateral current collector further includes a locking mechanism, which includes a locking hook, a locking hook sliding seat and a hook spring, the locking hook sliding seat is fixed on the bottom plate, the locking hook is sleeved in the locking hook sliding seat, and the hook One end of the spring is fixed on the locking hook, and the other end is fixed on the top of the hook slide seat.

Compared with the prior art, the present invention has the advantages of:

1. The lateral current receiver of the present invention uses the parallelism characteristic of the parallelogram four-bar linkage mechanism by stretching the spring to compulsorily translate the flow-receiving shoe to the flow-receiving rail, so as to realize the parallel expansion and contraction of the flow-receiving shoe. To adapt to the lateral deflection of the train along the track, always press the current receiving slide shoe against the current receiving friction surface of the power supply rail with a suitable contact pressure. The simple and light tension spring plus four-bar linkage mechanism can realize the rapid dynamic response of the flow-receiving shoe, and can reliably press the flow-receiving shoe against the flow-receiving rail under various operating conditions of the train; Or, in order to make the pressure change small within the normal working range of the flow-receiving shoe, the stroke of the spring is enlarged by using the principle of leverage;

2. The lateral current collector of the present invention includes an adaptive deflection mechanism of the current receiving shoe, in order to eliminate the inclination of the lead-in section (end elbow) at the end of the receiving rail and the sliding of the current receiving caused by the longitudinal deflection of the train. The longitudinal angle between the shoe and the current receiving rail surface provides a self-adaptive deflection with a spring. The current receiving shoe mounting seat utilizes a single hinge structure between the last swing rod and the last swing rod hinge support, and is composed of a torsion spring or The vortex spring produces a yaw force, and under the joint action of the positive pressure exerted by the tension spring on the flow-receiving shoe, it overcomes the longitudinal deflection between the train and the flow-receiving rail surface, so that the flow-receiving shoe conforms to the flow-receiving rail surface , to ensure smooth flow;

3. The lateral current collector of the present invention includes a retraction locking device, through the locking hinge shaft and locking hook assembled on the fork-shaped swing rod, the retraction locking of the connecting rod mechanism can be realized, which is convenient for the maintenance and maintenance of the current collector. Install.

Description of drawings

Fig. 1 is the structural representation of lateral collector of the present invention;

Fig. 2 is a top view schematic diagram of Fig. 1;

Fig. 3 is a schematic left view of Fig. 1;

Fig. 4 is a schematic cross-sectional view of line A-A in Fig. 3;

Fig. 5 is a schematic diagram of the deflection state of the flow collector shoe of the present invention when it is in a free state;

Fig. 6 is a schematic diagram of the momentary state when the vehicle and the rail are in parallel and the flow-receiving shoe and the flow-receiving rail begin to contact;

Fig. 7 is a schematic diagram of the final contact state between the flow receiving shoe and the flow receiving rail when the vehicle and the rail are in a parallel state;

Fig. 8 is a schematic diagram of the instant state when the vehicle and the rail are in a non-parallel state;

Fig. 9 is a schematic diagram of the final contact state between the flow receiving shoe and the flow receiving rail when the vehicle and the rail are in a non-parallel state;

Fig. 10 is a schematic structural view of the side current collector of the present invention when it is in a locked state.

illustration

1—Current rail 2—Current shoe 3—Base

4—force spring 5—end swing rod hinge support 6—end swing rod

7—Main swing rod 8—Fork swing rod 9—Auxiliary swing rod

10—spring pull rod 11—spring pull sleeve 12—extension spring

13—locking hook 14—bottom plate 15—insulating bottom plate

16—Insulator 17—Main swing rod support 18—Drain cord

20—Lock hook slide seat 21—Hook extension spring

22—locking hinge 23—spring pull seat 24—pin shaft

25—key 26—end swing rod twisted shaft

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings.

As shown in Fig. 1, Fig. 2 and Fig. 3, the lateral current collector of the present invention includes a flow collector shoe 2, a swing mechanism and a bottom plate 14, one end of the swing mechanism is fixed on the bottom plate 14, and the other end is connected to the flow collector shoe. 2, the other side of the bottom plate 14 is connected to the insulating bottom plate 15, the insulating bottom plate 15 is connected to the power supply equipment through the insulator 16, and the power supply equipment is connected to the current receiving shoe 2 through the drainage cord 18. The swing mechanism includes a four-bar linkage mechanism, a final swing link 6 and a tension spring 12. The four-bar linkage mechanism is formed by interconnecting the main swing link 7, the auxiliary swing link 9, the fork-shaped swing link 8 and the main swing link support 17. The formed parallelogram four-bar linkage mechanism with the main swing rod support 17 as the frame, the main swing rod support 17 is fixed on the base plate 14; The rod 7 is connected, and the other end is connected with the spring pull seat 23 fixed on the bottom plate 14; one end of the last section of the swing rod 6 is connected with the fork-shaped swing rod 8, and the fork-shaped swing rod 8 and the last section of the swing rod 6 pass through the pin shaft 24 and the key. 25 are connected as a whole, and can rotate with the main fork 7; When the main swing rod 7 swings relative to the main swing rod support 17, it drives the last swing rod 6 and then drives the flow-receiving shoe 2 to move forward and backward in translation, so that the flow-receiving shoe 2 can well contact the flow-receiving rail 1 to make it Receive flow. During normal operation, due to the action of the extension spring 12, the flow-receiving shoe 2 is always close to the flow-receiving rail 1, and the tension degree of the extension spring 12 is adjusted so that there is a proper positive relationship between the flow-receiving shoe 2 and the flow-receiving rail 1. pressure P. In a preferred embodiment, the lateral flow collector of the present invention includes the self-adaptive deflection mechanism of the flow collector shoe 2, that is, the last swing link 6 connects with the flow collector shoe 2 through the last swing link hinge support 5 One end of the torsion spring 4 fixed on the base 3 is pressed on the final swing rod twisted shaft 26 of the last swing rod 6, and a deflection is generated between the base 3 of the flow receiving shoe 2 and the last swing rod 6. Pendulum torsion, under the free state, the flow-receiving shoe 2 deflects to the side of the torsion spring 4 at a certain angle, the angle size is determined according to the needs, and is limited by the end structure of the last swing rod 6. At the moment when the current receiving shoe 2 and the current receiving rail 1 start to contact, there is an angle between the surface of the current receiving shoe 2 and the surface of the current receiving rail 1 along the axial direction of the current receiving rail, and then under the action of the tension spring 12, along with the main When the swing rod 7 is pushed toward the surface of the flow receiving rail 1, the flow receiving slide shoe 2 is attached to the surface of the flow receiving rail 1. When the train yaws longitudinally or the collector works on the slope of the lead-in section (end elbow) at the end of the collector rail 1, under the joint action of the extension spring 12 and the torsion spring 4, the collector shoe will 2 Comply with the plane of the flow-receiving rail 1, realize the surface bonding between the two, and ensure the stable flow-receiving of the train.

In a preferred embodiment, the present invention can further include a locking mechanism. As shown in FIG. , the locking hook 13 is sheathed in the locking hook sliding seat 20 , one end of the hook spring 21 is fixed on the locking hook 13 , and the other end is fixed on the top of the locking hook sliding seat 20 . A locking hinge shaft 22 is installed on the fork-shaped swing rod 8. When the current collector retracts to the locking working area, the locking hinge shaft 22 pushes the locking hook 13 to slide outward along the chute of the locking hook slide seat 20 until the lock After the position, under the effect of the hook extension spring 21, the mechanism is automatically locked. Pull the locking hook 13 outward to unlock. The locking hook 13 is outside the normal working range of the fork-shaped swing link 8, and has a certain safe working distance, so as to ensure that no false locking action occurs when the train is running (see Figure 10).

Working principle: As shown in Figure 5, when the flow-receiving shoe 2 is in a free state before contacting the flow-receiving rail 1, the flow-receiving shoe 2 is naturally deflected to one side by a certain angle θ under the action of the torsion spring 4 .

As shown in Figure 6, when the current receiving rail 1 does not produce any longitudinal deflection relative to the maglev train, at the moment when the current receiving shoe 2 is in contact with the current receiving rail 1, the current receiving shoe 2 and the current receiving There is a line contact between the rails 1, and there is an included angle of θ between the flow receiving slide shoe 2 and the flow receiving rail 1 in the longitudinal direction; the tension spring 12 is hinged through the parallelogram connecting rod structure, the last swing rod 6 and the last swing rod The seat 5 transmits force to the base 3 of the flow-receiving shoe, and under the joint action of the elastic force of the tension spring 12 and the reaction force of the flow-receiving rail 1, a gap is formed between the base 3 of the flow-receiving shoe 2 and the last swing rod 6. The deflection moment opposite to the direction of the torsion spring 4 makes the base 3 of the flow-receiving shoe 2 together with all the components installed on it to deflect in the direction where the included angle θ decreases relative to the last swing rod 6 around the twisted shaft 26 of the last swing rod , and finally make the current receiving slide shoe 2) and the current receiving rail 1 realize surface bonding (as shown in Figure 7).

As shown in Figure 8, if the current-receiving rail 1 produces a longitudinal deflection angle α relative to the maglev train, at the moment when the current-receiving shoe 2 is in contact with the current-receiving rail 1, the current-receiving shoe 2 and the receiving rail 1 There is a line contact between the flow rails 1, and there is an angle between the flow-receiving shoe 2 and the flow-receiving rail 1 in the longitudinal direction of θ±α (theta is subtracted when the deflection direction of α is the same, and the addition is added when the deflection direction of θ is opposite to α) The included angle; the tension spring 12 transmits the force to the base 3 of the flow-receiving shoe 2 through the parallelogram connecting rod structure, the last section of the swing link 6 and the last section of the swing link hinge support 5, the elastic force of the extension spring 12 and the flow receiving Under the combined action of the reaction force of the rail 1, a deflection moment opposite to the direction of the torsion spring 4 is formed between the base 3 of the flow-receiving shoe 2 and the last swing rod 6, so that the base 3 of the flow-receiving shoe together with the All the parts of the swing rod 6 are deflected in the direction of decreasing angle θ with respect to the last swing rod 6 around the hinge shaft 26 of the last swing rod, and finally the flow receiving slide shoe 2 and the flow receiving rail 1 are surface-bonded (as shown in Fig. 9 ) .

Claims (3)

1. A lateral current collector, which includes a flow collector shoe (2), a swing mechanism and a bottom plate (14), one end of the swing mechanism is fixed on the sub-bottom plate (14), and the other end is connected to the flow collector shoe (2) Connected, characterized in that: the swing mechanism includes a four-bar linkage mechanism, a final swing link (6) and a tension spring (12), and the four-bar linkage mechanism is composed of a main swing link (7), an auxiliary swing link (9 ), the fork-shaped swing link (8) and the main swing link support (17) are connected to each other to form a parallelogram four-bar linkage mechanism with the main swing link support (17) as the frame, and the main swing link support (17 ) is fixed on the bottom plate (14); one end of the extension spring (12) is connected with the main swing rod (7) through the spring pull sleeve (11) and the spring pull rod (10), and the other end is fixed on the bottom plate (14) The spring pull seat (23) is connected; the end section of the swing link (6) is connected to the fork swing link (8) at one end, and the other end is connected to the flow sliding shoe (2). 2. The lateral flow collector according to claim 1, characterized in that: the last swing link (6) passes through the last swing link hinge support (5) and the base of the flow collector shoe (2) ( 3) link to each other, be fixed with a torsion spring (4) on the end section fork hinge support (5), and one end of this torsion spring (4) is pressed on the end hinge shaft of end section fork (6). 3. The lateral current collector according to claim 1 or 2, characterized in that: the lateral current collector further includes a locking mechanism, which includes a locking hook (13), a locking hook sliding seat (20) and the hook spring (21), the locking hook slide seat (20) is fixed on the bottom plate (14), the locking hook (13) is sleeved in the locking hook slide seat (20), and one end of the hook spring (21) is fixed on the locking hook On the hook (13), the other end is fixed on the top of the locking hook slide seat (20).

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