Railway vehicle buffering type anti-slip fastener

Abstract

The utility model belongs to the technical field of railway safety protection, and particularly relates to a buffer type anti-slip fastener for railway vehicles, which comprises a hook, a hinge seat rotatably connected with the hook, a buffer component connected with the hinge seat, a cylinder body, a piston mounted in the cylinder body and connected with a piston rod, and a spring sleeved on the outer side of the piston rod. The cylinder body on two sides of the piston is communicated with an oil storage bottle through an oil nozzle, the cylinder body is connected with a connecting plate, the connecting plate and the piston rod are respectively connected with an internal thread barrel, the internal thread barrel is in threaded connection with an external thread connecting piece, the external thread connecting piece is rotationally clamped on the outer side of a connecting rod, and the two connecting rods are respectively connected with a hinge seat and a screw which is in threaded connection with a nut seat; the nut seat is hinged with a clamping seat, and the end part of the screw rod is connected with a crank. The buffer assembly can effectively consume impact potential energy at the initial stage of collision of the locomotive with the vehicle during trailer, instantaneous impact is reduced, and the buffer assembly has more reliable buffer protection performance under the conditions of high speed and heavy load.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of railway safety protection, and particularly relates to a buffer type anti-slip fastener for railway vehicles. BACKGROUND

[0002] The utility model discloses a buffer type anti-slip fastener for railway vehicles discloses a buffer type anti-slip fastener for railway vehicles, including the hook and screw rod, the screw rod lower extreme has annular shoulder, the screw rod is installed in the limit sleeve, elastic element, and elastic element is located in the limit sleeve inner chamber, the limit sleeve lower extreme fixedly connected with the hinged seat, the elastic element is pressed and is installed above annular shoulder, the screw rod is connected with nut seat, and nut seat is hinged with the clamping seat, the upper end of screw rod is connected with the ratchet wrench, the tail end of hook is horizontally hinged on the hinged seat. When the trailer, the locomotive hits the vehicle, the hook retreats and forms the buffer, prevents the hook and the screw rod hard contact through the hinged seat, leads to the fracture of the hook and the screw rod junction, causes the vehicle to slip accident.

[0003] However, the above-mentioned mechanism has the following problems: the principle of spring buffering is to store impact energy through the elastic deformation of the spring, but its limitation is significant: on the one hand, the spring buffering force follows Hooke's law and is proportional to the deformation, which will produce a transient peak force at the initial stage of impact, causing the connecting parts to withstand severe impact and easily causing the hook and screw rod connection to break down. For example, in the railway freight train marshalling operation, the coupling speed of the locomotive and the vehicle is usually 3-5km / h, at which time the instantaneous impact force generated by pure spring buffering can reach several tens of kilonewtons, far exceeding the fatigue limit of the parts. On the other hand, the energy stored by the spring will be released after the impact, producing a rebound force that may cause the vehicle to slide again or even slip, especially in the slope parking scene, the rebound force may break through the friction resistance, causing serious safety accidents. UTILITY MODEL CONTENTS

[0004] In view of the above problems, the utility model aims to provide a buffer type anti-slip fastener for railway vehicles, which solves the problem of existing anti-slip fasteners using springs for buffering, which is prone to instantaneous impact, rebound and component fracture.

[0005] In order to achieve the above object, the utility model discloses the technical scheme that a railway vehicle buffer type anti -slip fastener is adopted, including the hook, the hook is connected through the pivot axle and is hinged to the seat, one end of the hinged seat is connected with the buffer assembly, the buffer assembly includes the cylinder body, the inside sliding installation of cylinder body has the piston, the piston is connected with the one end of piston rod, the piston rod is through the one end of cylinder body and the outside of piston rod is equipped with the spring, the cavity in the cylinder body of the both sides of piston is communicated with the inner chamber of oil storage bottle through the oil nozzle, the cavity of cylinder body and oil storage bottle is filled with hydraulic oil, the other end of cylinder body is connected with the connecting plate, the connecting plate and piston rod are all connected with an internal thread cylinder, the internal thread cylinder is connected with the external thread connecting piece, the external thread connecting piece is rotatably clamped on the outside of connecting rod, two connecting rods are connected with the hinged seat and screw rod respectively, the screw rod is connected with the nut seat, the nut seat is hingedly connected with the clamping seat, and the end of screw rod is connected with the handle.

[0006] The utility model discloses the beneficial effect is: compared with the simple use spring and buffer, the use of buffer assembly can effectively consume impact potential energy through the damping force of hydraulic oil when locomotive hits the vehicle in the early stage of trailer time, reduces instantaneous impact, has more reliable buffer protection performance under high speed, heavy load, avoids the rupture of the connecting place of hook and screw rod, causes the vehicle to slip and escape accident.

[0007] In order to make the hook provide stable braking effect;

[0008] As the further improvement of the above technical scheme: the spring is slidably sleeved on the piston rod between the piston and the cylinder body.

[0009] The beneficial effect of the improvement is: the spring provides elastic support for the piston and provides a buffer stroke for the hook, ensuring that the hook can provide stable braking effect.

[0010] In order to fully ensure the sealing of the buffer assembly;

[0011] As the further improvement of the above technical scheme: the connecting part of the piston and the cylinder body is provided with a dynamic sealing structure, and the connecting part of the cylinder body and the piston rod is provided with a dynamic sealing structure.

[0012] The beneficial effect of the improvement is: the setting of the dynamic sealing structure ensures that the hydraulic oil in the buffer assembly does not leak, thereby affecting the use safety of the device.

[0013] In order to ensure the stability of the connection of the buffer assembly, the screw rod and the hinged seat;

[0014] As the further improvement of the above technical scheme: the connecting rod is a stepped column structure, and the large end of the connecting rod is arranged towards the direction of the cylinder body, and the inner hole of the external thread connecting piece is a stepped hole structure adapted to the surface of the connecting rod.

[0015] The improved beneficial effect is that the outer threaded connecting piece can drive the connecting rod to move towards the buffer assembly and limit the movement of the connecting rod in the radial and axial directions during the threaded connection of the inner threaded cylinder, thereby ensuring the stability of the connection of the buffer assembly with the screw rod and the hinged seat.

[0016] In order to conveniently supplement or replace hydraulic oil to the inside of the oil storage bottle;

[0017] As a further improvement of the above technical solution: one end of the oil storage bottle is provided with an oil filling port, and the oil filling port is threadedly connected with an inner threaded cover structure.

[0018] The improved beneficial effect is that the operator can conveniently supplement or replace oil through the oil filling port after unscrewing the cover body on the oil filling port.

[0019] In order to ensure the limiting stability of the device;

[0020] As a further improvement of the above technical solution: the screw rod is a trapezoidal screw rod structure.

[0021] The improved beneficial effect is that the trapezoidal thread of the screw rod has self-locking property, which can effectively maintain the relative position of the hook and the buffer assembly without rotating the screw rod body, thereby ensuring the limiting stability of the device.

[0022] The parts not involved in the device are the same as or can be realized by the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a structural schematic view of the utility model;

[0024] Figure 2 is a sectional view of the buffer assembly in the utility model;

[0025] Figure 3 is a connection structure diagram of the hinged seat in the utility model;

[0026] In the drawing: 1, hook; 2, hinged seat; 3, buffer assembly; 4, screw rod; 5, clamping seat; 6, nut seat; 7, ratchet handle; 8, cylinder body; 9, piston; 10, piston rod; 11, spring; 12, oil nozzle; 13, oil storage bottle; 14, oil filling port; 15, connecting plate; 16, inner threaded cylinder; 17, outer threaded connecting piece; 18, connecting rod. DETAILED DESCRIPTION

[0027] In order to make those skilled in the art better understand the technical solutions of the present application, the present application will be described in detail below with reference to the drawings, and the description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present application.

[0028] Embodiment 1:

[0029] As Figure 1 A railway vehicle buffer type anti-slip fastener is shown in Fig. 3: a hook 1 is rotationally connected to a hinged seat 2 through a pin shaft, one end of the hinged seat 2 is connected to a buffer assembly 3, the buffer assembly 3 includes a cylinder body 8, a piston 9 is slidably installed inside the cylinder body 8, one end of the piston 9 is connected to a piston rod 10, one end of the piston rod 10 penetrates the cylinder body 8 and the outside of the piston rod 10 is sleeved with a spring 11, the cavities in the cylinder body 8 on both sides of the piston 9 are connected to the inner cavity of an oil storage bottle 13 through oil nozzles 12, the cavities of the cylinder body 8 and the oil storage bottle 13 are both filled with hydraulic oil, the other end of the cylinder body 8 is connected to a connecting plate 15, the connecting plate 15 and the piston rod 10 are both connected to an internal threaded cylinder 16, the internal threaded cylinder 16 is threadedly connected to an external threaded connecting piece 17, the external threaded connecting piece 17 is rotationally clamped on the outside of a connecting rod 18, the two connecting rods 18 are respectively connected to the hinged seat 2 and a screw rod 4, the screw rod 4 is threadedly connected to a nut seat 6, the nut seat 6 is hingedly connected to a clamping seat 5, the end of the screw rod 4 is connected to a crank 7, compared with simply using a spring for buffering, the use of the buffer assembly 3 can effectively consume the impact potential energy through the damping force of the hydraulic oil when the locomotive hits the vehicle at the initial stage of the trailer, reducing the instantaneous impact, and having more reliable buffering protection performance under high speed and heavy load conditions, avoiding the breakage of the hook and the screw rod connection, causing the vehicle to slip and escape, the spring 11 is slidably sleeved on the piston rod 10 between the piston 9 and the cylinder body 8, the spring 11 provides elastic support for the piston 9 and provides a buffer stroke for the hook 1, ensuring that the hook 1 can provide stable braking effect, a dynamic sealing structure is arranged at the connection between the piston 9 and the cylinder body 8, a dynamic sealing structure is arranged at the connection between the cylinder body 8 and the piston rod 10, the arrangement of the dynamic sealing structure ensures that the hydraulic oil in the buffer assembly 3 does not leak, thereby affecting the safety of the device, the connecting rod 18 is a stepped column structure, and the large end of the connecting rod 18 is arranged in the direction of the cylinder body 8, the inner hole of the external threaded connecting piece 17 is a stepped hole structure that is adapted to the surface of the connecting rod 18, during the threaded connection of the external threaded connecting piece 17 and the internal threaded cylinder 16, the connecting rod 18 can be moved towards the buffer assembly 3 and limited in the radial and axial directions, thereby ensuring the stability of the connection between the buffer assembly 3, the screw rod 4 and the hinged seat 2, one end of the oil storage bottle 13 is provided with an oil filling port 14, the oil filling port 14 is threadedly connected to an internal threaded cap structure, the operator can conveniently perform oil replenishment or replacement work through the oil filling port 14 after unscrewing the cap on the oil filling port 14, the screw rod 4 is a trapezoidal screw rod structure, the trapezoidal thread of the screw rod 4 has self-locking property, which can effectively maintain the relative position of the hook 1 and the buffer assembly 3 without rotating the screw rod 4 body, thereby ensuring the limiting stability of the device.

[0030] The working principle of the technical solution is as follows: the card seat 5 is installed on the nut seat 6 through a hinged structure, the angle of the card seat 5 is adjusted to make it fit the side of the wheel, the hook 1 is hooked on the fixed lug at the bottom of the vehicle or other reliable fixing points, the hook 1 is ensured to rotate flexibly through the pin shaft and the hinged seat 2, the screw rod 4 is rotated clockwise by holding the crank 7, the screw rod 4 is matched with the nut seat 6 through trapezoidal threads, the buffer assembly 3 and the hook 1 are pushed to move towards the vehicle, until the card seat 5 closely fits the side of the wheel, the crank 7 is continuously rotated, the spring 11 generates an initial compression amount, and the hook 1 is provided with a pre-tightening force, so that the hook 1 can still maintain a fastening state when the vehicle slightly shakes, when the locomotive hits the vehicle, the impact force is transmitted to the hinged seat 2 through the hook 1, the piston rod 10 of the buffer assembly 3 is pushed to move into the cylinder body 8, the piston 9 extrudes the hydraulic oil in the cylinder body 8, the hydraulic oil flows into the oil storage bottle 13 through the oil nozzle 12, and the damping force is generated in the flowing process, so that the impact potential energy is effectively consumed, and the instantaneous impact force is reduced; after the impact ends, the spring 11 pushes the piston 9 to reset, and the hydraulic oil flows back from the oil storage bottle 13 to the cylinder body 8.

[0031] It should be noted that in this document, the terms "comprising", "containing", or any other similar term are intended to encompass non-exclusive inclusion, so that a process, method, article or device that includes a list of elements not only includes those elements, but also includes other elements not explicitly listed, or inherent to such a process, method, article or device.

[0032] The principles and implementation modes of the present application are described by using specific examples in this document, and the above examples are only used to help understand the method of the present application and its core idea. The above description is only the preferred embodiment of the present application, and it should be pointed out that due to the limitation of language expression, there are infinite specific structures, and for ordinary skilled persons in the technical field, some improvements, decorations or changes can be made without departing from the principles of the present application, or the technical features described above can be combined in a proper way; these improvements, decorations, changes or combinations, or the direct application of the ideas and technical solutions of the present application to other fields without improvement, should be regarded as the protection scope of the present application.

Claims

1. A buffer-type anti-runoff fastener for a railway vehicle, characterized by: The utility model provides a kind of hydraulic pressure shock absorber, including hook (1), hook (1) is rotatably connected hinged seat (2) by pin shaft, one end of hinged seat (2) is connected buffer assembly (3), buffer assembly (3) includes cylinder (8), piston (9) is slidably installed in the inside of cylinder (8), piston (9) is connected one end of piston rod (10), piston rod (10) penetrates one end of cylinder (8) and the outside of piston rod (10) is equipped with spring (11), the cavity in the inside of cylinder (8) on the both sides of piston (9) is connected by oil nozzle (12) the inner cavity of oil storage bottle (13), cylinder (8) and the cavity of oil storage bottle (13) are filled with hydraulic oil, the other end of cylinder (8) is connected with connecting plate (15), connecting plate (15) and piston rod (10) are all connected with one internally threaded cylinder (16), internally threaded cylinder (16) is threadedly connected with externally threaded connecting piece (17), externally threaded connecting piece (17) is rotatably clamped on the outside of connecting rod (18), two connecting rod (18) are connected hinged seat (2) and screw rod (4) respectively, screw rod (4) is threadedly connected with nut base (6), nut base (6) is hingedly connected with clamping seat (5), the end of screw rod (4) is connected with crank handle (7).

2. A buffer-type anti-runoff fastener for a railway vehicle according to claim 1, characterized in that: The spring (11) is slidably sleeved on the piston rod (10) between the piston (9) and the cylinder (8).

3. A buffer-type anti-runoff fastener for a railway vehicle according to claim 1, characterized in that: The connecting portion of the piston (9) and the cylinder (8) is provided with a dynamic sealing structure, and the connecting portion of the cylinder (8) and the piston rod (10) is provided with a dynamic sealing structure.

4. A buffer-type anti-runoff fastener for a railway vehicle according to claim 1, characterized in that: The connecting rod (18) is a stepped column structure, and the large end of the connecting rod (18) is arranged towards the cylinder (8), and the inner hole of the externally threaded connecting piece (17) is a stepped hole structure matched with the surface of the connecting rod (18).

5. A buffer-type anti-runoff fastener for a railway vehicle according to claim 1, characterized in that: One end of the oil storage bottle (13) is provided with an oil inlet (14), and the oil inlet (14) is threadedly connected with an internally threaded cover structure.

6. A buffer-type anti-runoff fastener for a railway vehicle according to claim 1, characterized in that: The screw rod (4) is a trapezoidal screw rod structure.

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