Electric car coupler pushing device

Abstract

The invention relates to an electric car coupler pushing device which comprises a supporting frame, a driving mechanism and a pushing mechanism. Wherein the driving mechanism is fixed on the support frame and comprises a mounting end and a power output end; the pushing mechanism comprises a connecting piece, a first force transmission piece and a second force transmission piece; the connecting piece is connected with the power output end, and a sliding groove is formed in the connecting piece; one end of the first force transmission piece is slidably installed in the sliding groove, and the other end of the first force transmission piece is coupled with the second force transmission piece. The second force transmission piece is coupled with the electric car coupler; when the power output end extends to the maximum stroke position, the connecting piece, the first force transmission piece and the second force transmission piece form a self-locking structure. According to the electric coupler pushing device, the acting force on the electric coupler is in the horizontal direction, the problem that the electric coupler is blocked due to the fact that upward or downward component force is generated is avoided, meanwhile, after the electric coupler is pushed out, mechanical self-locking of the connecting rod mechanism can be conducted, and the situation that the electric coupler is stressed to return is avoided.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of rail vehicles, and particularly relates to an electric coupler pushing device. BACKGROUND

[0002] With the development of rail transit technology, the control function of rail vehicles is increasingly complex, and the number of electric components integrated at the front end of the vehicle body has significantly increased, resulting in a significant compression of the installation space of the coupler buffer device. In particular, in the middle section area of the vehicle, the installation of the coupler buffer device is limited by factors such as the through passage of the upper vehicle or the lower height limit, so when the electric coupler is installed in the middle section area of the vehicle, the requirement for the compactness of the pushing device structure is also more stringent.

[0003] The existing electric coupler pushing device mainly has two typical structures of self-locking cylinder straight pushing type structure and self-locking inclined pushing type mechanism. Among them, the cylinder straight pushing type structure has a relatively simple principle, fewer parts and high reliability, but its self-locking function depends on the internal locking pin of the cylinder, which has the risk of unlocking failure, and is not suitable for electric couplers with large coupling force values. The self-locking inclined pushing mechanism realizes rigid self-locking through a mechanical lever, has strong bearing capacity, and can adapt to high coupling force value scenes, but during the pushing process of the electric coupler, it will cause the electric coupler to bear upward or downward component force, thereby causing the electric coupler to bear a large friction force, which is easy to cause pushing jamming failure. SUMMARY

[0004] The purpose of the present application is to solve one of the above technical problems, and to provide an electric coupler pushing device.

[0005] To achieve the above purpose, the technical solution adopted by the present application is: An electric coupler pushing device, comprising: a support frame; a driving mechanism comprising a mounting end and a power output end; the mounting end is fixed on the support frame; the power output end is telescopically arranged relative to the mounting end; a pushing mechanism comprising a connecting piece, a first force transmission piece and a second force transmission piece; the connecting piece is fixedly connected with the power output end, and a sliding groove is arranged on the connecting piece; one end of the first force transmission piece is slidingly installed in the sliding groove, and the other end is shaft-connected with the second force transmission piece; the body of the first force transmission piece is shaft-connected with the support frame; the end of the second force transmission piece away from the first force transmission piece is shaft-connected with the electric coupler; during the telescoping process of the power output end, the one end of the first force transmission piece slides in the sliding groove, and the first force transmission piece and the second force transmission piece rotate relative to each other; when the power output end is extended to the maximum stroke position, the connecting piece, the first force transmission piece and the second force transmission piece form a self-locking structure.

[0006] In some embodiments of the present application, when the power output end extends to the maximum stroke position, the pushing mechanism drives the electric car hook to extend to the position and be connected with the electric car hook on the opposite side, and the electric car hook on the opposite side exerts a force on the electric car hook, the force is transmitted to the second force transmission member, so that the second force transmission member and the first force transmission member both have a tendency to move away from the longitudinal center line of the electric car hook, and are kept in place under the limitation of the connecting member to form a self-locking structure.

[0007] In some embodiments of the present application, the first force transmission member includes a V-shaped structure, including a first connecting segment and a second connecting segment; the first connecting segment is connected with the connecting member; and the second connecting segment is connected with the second force transmission member.

[0008] In some embodiments of the present application, when the power output end extends to the maximum stroke position, the second connecting segment and the second force transmission member form a predetermined angle towards one side of the longitudinal center line of the electric car hook, and the predetermined angle is less than 180°.

[0009] In some embodiments of the present application, during the extension of the power output end, one end of the first force transmission member slides in the sliding groove in a first direction, thereby driving the first force transmission member to rotate around the connecting point between the first force transmission member and the support frame away from the longitudinal center line of the electric car hook, and simultaneously driving the second force transmission member to rotate around the connecting point between the second force transmission member and the electric car hook away from the longitudinal center line of the electric car hook.

[0010] In some embodiments of the present application, during the extension of the power output end, one end of the first force transmission member slides in the sliding groove in a second direction, thereby driving the first force transmission member to rotate around the connecting point between the first force transmission member and the support frame towards the longitudinal center line of the electric car hook, and simultaneously driving the second force transmission member to rotate around the connecting point between the second force transmission member and the electric car hook towards the longitudinal center line of the electric car hook; the first direction and the second direction are opposite directions.

[0011] In some embodiments of the present application, a guide portion is arranged on the electric car hook. The pushing mechanism further includes a guide rod, which is arranged parallel to the longitudinal center line of the electric car hook, one end of the guide rod is fixed to the support frame, and the other end of the guide rod penetrates the guide portion, so that the electric car hook moves along the guide rod during the extension and retraction of the electric car hook.

[0012] In some embodiments of the present application, the pushing mechanism further includes an elastic member, which is sleeved outside the second force transmission member.

[0013] In some embodiments of the present application, the support frame includes a pushing support and a driving installation support. The pushing mechanism is installed on the pushing support, and the driving mechanism is installed on the driving installation support; the pushing support and the driving installation support are movably connected through the elastic member.

[0014] In some embodiments of the present application, the pushing mechanism comprises two groups, and the two groups of pushing mechanisms are symmetrically arranged relative to the longitudinal center line of the car coupler.

[0015] In some embodiments of the present application, the auxiliary driving mechanism is further provided, and the auxiliary driving mechanism is connected with the power output end, and the auxiliary driving mechanism drives the power output end to extend or retract when rotating.

[0016] In some embodiments of the present application, the auxiliary driving mechanism comprises a connecting rod and a rotating arm, the connecting rod and the rotating arm are connected, one end of the connecting rod away from the rotating arm is connected with the power output end, and the other end of the rotating arm away from the connecting rod is connected with the support frame.

[0017] The present application has the following beneficial effects: 1. The pushing mechanism provided by the present application can effectively avoid the problem of the electric car coupler being stuck, because the force acting on the electric car coupler during the process of pushing out and retracting the electric car coupler is in the front-back direction of the horizontal plane, and no upward or downward component force is generated. 2. After the electric car coupler is pushed out by the pushing mechanism provided by the present application, the mechanical self-locking of the connecting rod mechanism can ensure that the electric car coupler will not retreat when a larger force is applied.

[0018] Other features and advantages of the present application will be described in the following specification, and some will become apparent from the specification, or will be understood from the practice of the present application. The purposes and other advantages of the present application can be achieved and obtained by the structures indicated in the specification, claims and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, specific embodiments of the present application will be described in detail below with reference to the drawings, and other drawings can also be obtained by those skilled in the art without creative labor on the premise that the drawings are not attached.

[0020] Figure 1 FIG. 1 is a structural schematic view of an electric car coupler pushing device; Figure 2 FIG. 2 is a structural schematic view of the electric car coupler pushing device from another angle; Figure 3 FIG. 3 is a side view of the electric car coupler pushing device; Figure 4 FIG. 4 is a top view of the electric car coupler pushing device; Figure 5 FIG. 5 is a structural schematic view of the electric car coupler pushing device in an extended state; Figure 6 FIG. 6 is a top view of the electric car coupler pushing device in the extended state; Figure 7 FIG. 7 is a force diagram of the electric car coupler pushing device in the extended state; Figure 8 Structure diagram of the electric car coupler pushing device in the retracted state; Figure 9 Top view of the electric car coupler pushing device in the retracted state; Figure 10 Force diagram of the electric car coupler pushing device in the retracted state; Figure 11 Diagram of one installation position of the elastic member; In the drawings, reference numerals: 1, electric car coupler; 11, guide part; 2, support frame; 21, pushing support; 22, rear panel; 23, drive installation support; 24, stop block; 25, trunnion seat; 3, drive mechanism; 31, installation end; 32, power output end; 4, pushing mechanism; 41, first force transmission member; 42, connecting member; 43, first pin shaft; 44, second force transmission member; 45, elastic member; 5, guide rod; 6, auxiliary drive mechanism; 61, connecting rod; 62, rotating arm; 7, longitudinal center line of the coupler. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is described and explained below in combination with the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application. Based on the embodiments provided in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0022] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0023] The embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0024] The technical solution of the present invention is described in detail below with reference to specific embodiments and the accompanying drawings. Unless otherwise specified, the terms "inside" and "outside" are used with reference to the longitudinal centerline of the coupler. The term "inside" refers to the area closer to the longitudinal centerline of the coupler, and the term "outside" refers to the area farther from the longitudinal centerline of the coupler.

[0025] As attached Figure 1 -Attached Figure 11 As shown, in an illustrative embodiment of a pushing device for an electric coupler 1 of the present invention, the pushing device includes a support frame 2 , a driving mechanism 3 and a pushing mechanism 4 .

[0026] Among them, the support frame 2 is the basic supporting component of the pushing device, which is used to provide a platform for installation and fixing of other mechanisms. The support frame 2 includes a pushing bracket 21 and a drive mounting bracket 23. Among them, the pushing bracket 21 is fixed above the electric coupler 1, and a rear panel 22 is provided at one end thereof close to the driving mechanism 3, and the drive mounting bracket 23 is fixedly connected to the pushing bracket 21 through the rear panel 22. The driving mechanism 3 and the pushing mechanism 4 are respectively located on both sides of the rear panel 22. A through hole is provided on the rear panel 22. The size of the through hole is larger than the diameter of the power output end 32 of the driving mechanism 3 to ensure that the power output end 32 can pass through the through hole to provide driving force for the pushing mechanism 4. The shape and size of the support frame 2 can be designed according to the actual installation space and usage requirements, and it is made of high-strength metal material to ensure that its strength and stability can withstand the force to which the pushing device is subjected during the process.

[0027] The driving mechanism 3 includes a mounting end 31 and a power output end 32 , wherein the mounting end 31 is fixed on the support frame 2 , and the power output end 32 can perform telescopic movement relative to the mounting end 31 .

[0028] The drive mechanism 3 can be a pneumatic cylinder, hydraulic cylinder, or electric push rod, etc., with a retractable power output end 32. In this embodiment, the drive mechanism 3 is a pneumatic cylinder, wherein the cylinder body is the mounting end 31, the piston rod is the power output end 32, and the rear end of the cylinder body is mounted on the drive mounting bracket 23 via the trunnion seat 25 and the stop block 24.

[0029] The pushing mechanism 4 includes a connecting member 42 , a first force transmission member 41 and a second force transmission member 44 .

[0030] The connecting member 42 is fixedly connected to the power output end 32, and a slide groove perpendicular to the longitudinal center line 7 of the coupler is provided on the connecting member 42. The horizontal cross section of the slide groove is elliptical.

[0031] The first force transmission member 41 is slidably mounted in the sliding groove at one end by the second pin shaft and is connected to the second force transmission member 44 at the other end by the third pin shaft. The body of the first force transmission member 41 is connected to the pushing bracket 21 by the first pin shaft 43. Specifically, the first force transmission member 41 is fixedly connected to the first pin shaft 43 and cannot rotate relative to the first pin shaft 43. The first pin shaft 43 is rotatably connected to the pushing bracket 21 by penetrating the mounting hole of the pushing bracket 21. The first force transmission member 41 and the first pin shaft 43 can jointly rotate horizontally about the mounting hole of the pushing bracket 21.

[0032] The second force transmission member 44 is connected to the trolley hook 1 by the fourth pin shaft at the end away from the first force transmission member 41. It should be noted that the second pin shaft, the third pin shaft, and the fourth pin shaft are all hidden inside the connection points, so they are not shown in the figure.

[0033] During the extension and retraction of the power output end 32, the first force transmission member 41 slides in the sliding groove, driving the first force transmission member 41 to rotate horizontally about the connection point with the pushing bracket 21. At the same time, the second force transmission member 44 is driven to rotate horizontally about the connection point with the trolley hook 1. It can be understood that during the horizontal outward rotation of the first force transmission member 41 and the second force transmission member 44, the pushing mechanism 4 as a whole tends to expand outward.

[0034] When the power output end 32 extends to the maximum stroke position, the connection points of the first force transmission member 41 and the connecting member 42, the first force transmission member 41 and the support bracket 2, the first force transmission member 41 and the second force transmission member 44, and the second force transmission member 44 and the trolley hook 1 are in a "dead point" or near-dead point state. The connecting member 42, the first force transmission member 41, and the second force transmission member 44 form a self-locking structure, ensuring that the trolley hook 1 will not be accidentally retracted due to external forces after being connected.

[0035] In the above-mentioned exemplary embodiments, during the extension and retraction of the trolley hook 1 by the pushing mechanism 4, the trolley hook 1 is subjected to forces in the front-back direction of the horizontal plane without upward or downward components generated by the oblique pushing mechanism, thereby ensuring that the trolley hook 1 will not be stuck. After the trolley hook 1 is extended by the pushing mechanism 4, the connecting rod 61 mechanism can be self-locked, ensuring that the trolley hook 1 will not retract when subjected to a large force.

[0036] To achieve mechanical self-locking, in some embodiments of the present application, as shown in FIG. 6, the connecting member 42 is connected to the first force transmission member 41 by the first pin shaft 43 and is connected to the support bracket 2 by the second pin shaft. The first force transmission member 41 is connected to the second force transmission member 44 by the third pin shaft. The second force transmission member 44 is connected to the trolley hook 1 by the fourth pin shaft. Figure 7As shown, when the power output end 32 extends to the maximum stroke position, the electric car hook 1 is driven by the pushing mechanism 4 to extend to the position and be connected with the electric car hook 1 on the opposite side. The electric car hook 1 is subjected to the force from the electric car hook 1 on the opposite side, and the force is transmitted to the second force transmission member 44, so that the second force transmission member 44 and the first force transmission member 41 both have a tendency to move away from the longitudinal center line 7 of the car hook. Since the first force transmission member 41 is connected with the power output end 32 at this time, and the power output end 32 has extended to the maximum stroke position and is limited by the cylinder cover and the piston and other cylinder internal mechanisms, the first force transmission member 41 and the second force transmission member 44 cannot continue to rotate outward, and are kept in place under the limitation of the connecting member 42 to form a self-locking structure.

[0037] In order to further realize mechanical self-locking, in some embodiments of the present application, the first force transmission member 41 is arranged in a V shape and includes a first connecting section and a second connecting section. The end of the first connecting section is in sliding connection with the connecting member 42. The end of the second connecting section is in shaft connection with the second force transmission member 44, and the intersection of the first connecting section and the second connecting section is fixedly connected with the first pin shaft 43.

[0038] In order to further realize mechanical self-locking, in some embodiments of the present application, when the power output end 32 extends to the maximum stroke position, the second connecting section and the second force transmission member 44 form a predetermined angle toward one side of the longitudinal center line 7 of the car hook, and the predetermined angle is less than 180°, so that the pushing mechanism can form a self-locking structure.

[0039] In some embodiments of the present application, during the extension of the power output end 32, one end of the first force transmission member 41 slides in the sliding groove in a first direction, thereby driving the first force transmission member 41 to horizontally rotate around the connection point between the first force transmission member 41 and the support frame 2 away from the longitudinal center line 7 of the car hook, and simultaneously driving the second force transmission member 44 to horizontally rotate around the connection point between the second force transmission member 44 and the electric car hook 1 away from the longitudinal center line 7 of the car hook. Specifically, the first direction is a direction close to the longitudinal center line 7 of the car hook.

[0040] In some embodiments of the present application, during the extension of the power output end 32, one end of the first force transmission member 41 slides in the sliding groove in a second direction, thereby driving the first force transmission member 41 to horizontally rotate around the connection point between the first force transmission member 41 and the support frame 2 close to the longitudinal center line 7 of the car hook, and simultaneously driving the second force transmission member 44 to horizontally rotate around the connection point between the second force transmission member 44 and the electric car hook 1 close to the longitudinal center line 7 of the car hook. The first direction and the second direction are opposite directions, i.e., the second direction is a direction away from the longitudinal center line 7 of the car hook.

[0041] In some embodiments of the present application, the electric car hook 1 is provided with a guide portion 11.

[0042] The pushing mechanism 4 further comprises a guide rod 5, which is arranged in parallel to the longitudinal center line 7 of the coupler, and one end of the guide rod 5 is fixed to the support frame 2, and the other end of the guide rod 5 penetrates the guide part 11, so that the electric coupler 1 moves along the guide rod 5 during the extension and retraction process.

[0043] In some embodiments of the present application, the pushing mechanism 4 further comprises an elastic member 45.

[0044] As shown in FIG. 1, the second force transmission member 44 is a rigid connecting rod 61, and the elastic member 45 is a spring. Figure 6 Figure 7 As shown in FIG. 1, the second force transmission member 44 is a rigid connecting rod 61, and the elastic member 45 is a spring.

[0045] As shown in FIG. 1, the second force transmission member 44 is a rigid connecting rod 61, and the elastic member 45 is a spring. Figure 11 As shown in FIG. 1, the second force transmission member 44 is a rigid connecting rod 61, and the elastic member 45 is a spring.

[0046] In some embodiments of the present application, the pushing mechanism 4 and the guide rod 5 comprise two groups, and the two groups of pushing mechanisms 4 and the two groups of guide rods 5 are symmetrically arranged relative to the longitudinal center line 7 of the coupler, so that the forces on both sides of the electric coupler 1 are balanced.

[0047] In some embodiments of the present application, the pushing mechanism 4 further comprises an auxiliary driving mechanism 6, which is connected with the power output end 32, and the auxiliary driving mechanism 6 drives the power output end 32 to extend and retract when the auxiliary driving mechanism 6 rotates.

[0048] Specifically, the auxiliary driving mechanism 6 comprises a connecting rod 61 and a rotating arm 62; the connecting rod 61 and the rotating arm 62 are connected; one end of the connecting rod 61 away from the rotating arm 62 is connected with the power output end 32; and the other end of the rotating arm 62 away from the connecting rod 61 is connected with the support frame 2.

[0049] When the driving mechanism 3 is a gas / electric linear actuator, the rotating arm 62 of the auxiliary driving mechanism 6 is manually operated to drive the power output end 32 of the driving mechanism 3 to extend and retract, so as to realize emergency operation.

[0050] ​It should be noted that the various embodiments described in the specification are intended to be illustrative only and are not in any way limiting of the present application. The description of the embodiments is presented solely for the purpose of enabling a person skilled in the art to make and use the application. It will be understood to those skilled in the art that various modifications can be made to the embodiments described herein without departing from the spirit of the application. Such modifications are intended to be within the scope of the present application.

[0051] The above embodiments are only used to illustrate the technical solutions of the present application but not limit the present application; although the present application has been described in detail with reference to the preferred embodiments, it is understood by those skilled in the art that the specific embodiments of the present application can be modified or some technical features can be replaced by equivalent ones; and without departing from the spirit of the technical solutions of the present application, they should be covered in the technical solution range of the present application.

Claims

1. An electric coupler pushing device, characterized in that: include: Support frame; A driving mechanism, including a mounting end and a power output end; The mounting end is fixed on the support frame; the power output end is telescopically arranged relative to the mounting end; The pushing mechanism includes a connecting member, a first force transmission member, and a second force transmission member; The connecting piece is fixedly connected to the power output end, and a sliding groove is provided on the connecting piece; One end of the first force transmission member is slidably installed in the slide groove, and the other end is axially connected to the second force transmission member; the first force transmission member body is axially connected to the support frame; One end of the second force transmission member away from the first force transmission member is connected to the electric coupler shaft; During the extension and retraction process of the power output end, one end of the first force transmission member slides in the slide groove, and the first force transmission member and the second force transmission member rotate relative to each other; when the power output end is extended to the maximum stroke position, the first force transmission member and the second force transmission member have a tendency to rotate away from the longitudinal center line of the coupler, and remain in place under the limitation of the connecting member, forming a self-locking structure.

2. The electric coupler pushing device according to claim 1, characterized in that: When the power output end is extended to the maximum stroke position, the electric coupler is driven to extend into position by the pushing mechanism and connected to the electric coupler on the opposite side. The force applied from the electric coupler on the opposite side is transmitted to the second force transmission member, so that both the second force transmission member and the first force transmission member have a tendency to rotate away from the longitudinal center line of the coupler, and remain in place under the restriction of the connecting member to form a self-locking structure.

3. The electric coupler pushing device according to claim 1, characterized in that: The first force transmission member is arranged in a V-shape, including a first connecting segment and a second connecting segment; the first connecting segment is connected to the connecting member; and the second connecting segment is connected to the second force transmission member.

4. The electric coupler pushing device according to claim 3, characterized in that: When the power output end is extended to the maximum stroke position, the second connecting section and the second force transmission member form a predetermined angle toward one side of the longitudinal center line of the coupler, and the predetermined angle is less than 180°.

5. The electric coupler pushing device according to claim 1, characterized in that: During the extension of the power output end, one end of the first force transmission member is driven to slide in the first direction in the slide groove, thereby driving the first force transmission member to rotate around the connection point between the first force transmission member and the support frame in the direction away from the longitudinal center line of the coupler. At the same time, the second force transmission member is driven to rotate around the connection point between the first force transmission member and the electric coupler in the direction away from the longitudinal center line of the coupler.

6. The electric coupler pushing device according to claim 5, characterized in that: During the extension of the power output end, one end of the first force transmission member is driven to slide in the second direction in the slide groove, thereby driving the first force transmission member to rotate around the connection point between the first force transmission member and the support frame toward the direction close to the longitudinal center line of the coupler. At the same time, the second force transmission member is driven to rotate around the connection point between the first force transmission member and the electric coupler toward the direction close to the longitudinal center line of the coupler; the first direction and the second direction are opposite directions.

7. The electric coupler pushing device according to claim 1, characterized in that: The electric coupler is provided with a guide portion; The pushing mechanism further includes a guide rod, which is arranged parallel to the longitudinal center line of the coupler, one end of which is fixed to the support frame, and the other end passes through the guide part, so that the electric coupler moves along the guide rod during extension and retraction.

8. The electric coupler pushing device according to claim 1, characterized in that: The pushing mechanism further includes an elastic member, and the elastic member is sleeved on the outside of the second force transmission member.

9. The electric coupler pushing device according to claim 1, characterized in that: The support frame includes a pushing bracket and a driving mounting bracket; The pushing mechanism is installed on the pushing bracket, and the driving mechanism is installed on the driving mounting bracket; the pushing bracket and the driving mounting bracket are movably connected via an elastic member.

10. The electric coupler pushing device according to claim 1, characterized in that: It further includes an auxiliary driving mechanism, which is axially connected to the connecting member. When the auxiliary driving mechanism rotates, it drives the connecting member to move, thereby driving the power output end to extend and retract.

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