CN218257592U

CN218257592U - Take drawbar of bradyseism

Info

Publication number: CN218257592U
Application number: CN202222297176.0U
Authority: CN
Inventors: 罗旭兵; 任林; 李开罗; 唐泺
Original assignee: Chengdu Sifukai Technology Co ltd
Current assignee: Chengdu Sifukai Technology Co ltd
Priority date: 2022-08-30
Filing date: 2022-08-30
Publication date: 2023-01-10
Anticipated expiration: 2032-08-30

Abstract

The utility model provides a take bradyseism's traction lever relates to traction lever technical field. The traction rod comprises a traction pull rod and a traction rod barrel which are connected with each other, wherein one end of the traction rod barrel is provided with a port communicated with the interior of the traction rod barrel, and the traction pull rod extends into the traction rod barrel from the port; the end part of the traction pull rod extending into the traction rod barrel is connected with the inner wall of the traction rod barrel through an elastic piece, buffer cavities are formed in the two sides of the traction rod barrel with the end part of the traction pull rod as a boundary, and when the end part of the traction pull rod moves to the buffer cavity on any side, the elastic piece on the side is compressed, and the elastic piece on the other side is stretched; the advantage of the spring pre-compression is that the traction pull rod and the traction rod barrel can be in a relatively stable state, obvious relative displacement can not occur when the stress is not large, and the spring can react more quickly to play a role in cushioning when being impacted by large thrust or pulling force.

Description

Take drawbar of bradyseism

Technical Field

The utility model relates to a traction lever technical field particularly, relates to a take traction lever of bradyseism.

Background

The traction pull rod comprises a left traction pull rod connector, a connecting rod and a right traction pull rod connector, and is formed by connecting and assembling the three parts; the traction pull rod has simple structure, is decomposable and easy to assemble, and compared with the prior steel wire rope traction vehicle, the traction pull rod has simple and convenient connection and belongs to hard connection traction when in use, and can ensure the traction safety.

The two ends of the common traction pull rod are in rigid connection, when the equipment is in a sudden start and a sudden stop in the traction process, the equipment can keep the original motion state due to inertia and generate rigid collision with the traction pull rod, and at the moment, the equipment and the traction pull rod can be impacted or the joint (such as a pin) of the traction pull rod and the equipment is impacted, so that the service life is influenced. Therefore, many special equipment and special vehicles to be towed need to be equipped with the traction pull rod with the shock absorption function to avoid hard impact and protect the equipment. Some existing devices have started to use shock-absorbing traction pull rods, but most of them have the following problems:

1. the end of the traction pull rod is fixed with the vehicle body, and the front end of the traction pull rod exceeds the vehicle body, so that the traction pull rod is inconvenient to take down and store, and is easy to damage and hurt.

2. The traction pull rod is difficult to disassemble and maintain after being assembled, and is difficult to take out for maintenance and replacement when the spring is blocked, and special tools or repair is needed.

3. The traction pull rod is too simple in structure, high in failure rate, free of guide design in the traction pull rod, and prone to being stuck, abraded or damaged.

4. The height of the traction pull rod and the height of the matched equipment are customized, the structural design is not suitable for other similar vehicles, and the universality is poor.

5. The traction height is fixed, and the positions of the interfaces are not matched after the traction equipment is replaced.

6. The traction pull rod has poor buffering performance, occasionally causes hard impact, and has other problems of convenient use and comfort.

In order to solve the problems, how to design a draft bar with a shock absorption function is urgently needed to be solved at present.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a take bradyseism's traction lever, it has adopted the universalization design, considers various operating modes and service environment, accomodates to depositing of traction rod and makes the optimization, has solved following problem: 1. the problem of inconvenient storage of the traction pull rod; 2. the problem that the traction pull rod extends out of the boundary; 3. the problem of inconvenient maintenance of the traction pull rod; 4. the problem of high failure rate of the traction pull rod; 5. the universality of the traction pull rod is poor; 6. the cushioning performance of the traction pull rod is poor; 7. the use of the traction pull rod is not in accordance with the problem of operation habit.

The embodiment of the utility model is realized like this:

the embodiment of the application provides a damping draw bar, which comprises a draw bar and a draw bar barrel which are connected with each other, wherein one end of the draw bar barrel is provided with a port communicated with the interior of the draw bar barrel, and the draw bar extends into the draw bar barrel from the port;

the end part of the traction pull rod extending into the traction rod barrel is connected with the inner wall of the traction rod barrel through an elastic piece, buffer cavities are formed in the two sides of the traction rod barrel with the end part of the traction pull rod as a boundary, when the end part of the traction pull rod moves to the buffer cavity on any side, the elastic piece on the side is compressed, and the elastic piece on the other side is stretched.

In some embodiments of the present invention, the port extends inward to form a stop ring abutting against the elastic member.

In some embodiments of the present invention, the inner wall of the limiting ring is provided with a first supporting ring and a dust ring which are slidably connected to the traction rod.

In some embodiments of the present invention, the elastic member is a spring.

In some embodiments of the utility model, above-mentioned the traction pull rod stretches into tip in the traction rod pole section of thick bamboo still is connected with guide piston, guide piston's outer wall with traction rod pole section of thick bamboo's inner wall sliding fit, and guide piston's both ends respectively with two the elastic component rigid coupling, two the other end of elastic component respectively with the bottom inner wall rigid coupling of spacing ring and traction rod pole section of thick bamboo.

In some embodiments of the present invention, the outer wall of the guide piston is provided with a second support ring in sliding fit with the inner wall of the drawbar barrel.

In some embodiments of the present invention, the end of the guide piston away from the port extends into the elastic member to form the guide portion.

In some embodiments of the present invention, the end of the drawbar barrel away from the port is provided with a split pin and a pin with a hole.

In some embodiments of the present invention, the end of the traction rod extending out of the traction rod barrel is provided with a connection ring.

In some embodiments of the present invention, the outer wall of the drawbar barrel is further provided with a rubber handle.

Compared with the prior art, the embodiment of the utility model has following advantage or beneficial effect at least:

the traction rod adopts a two-section design, and the traction rod barrel are separated; the draw rod barrel is connected with the equipment to be drawn through a hinge structure such as a bolt, the draw rod is inserted into the draw rod barrel and pressed from two ends along the draw rod direction by two sections of springs, and when an end cover on the draw rod barrel is covered, the springs are pressed to generate elastic deformation to generate elasticity.

The advantage of the spring pre-compression is that the traction pull rod and the traction rod barrel can be in a relatively stable state, obvious relative displacement can not occur when the stress is not large, and the spring can react more quickly to play a role in cushioning when being impacted by large thrust or pulling force.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of the whole drawbar in the embodiment of the present invention;

fig. 2 is a schematic view of the connection between the traction rod and the traction rod barrel according to the embodiment of the present invention;

fig. 3 is a schematic structural view of another view angle of the drawbar in the embodiment of the present invention.

Icon: 1. a traction pull rod; 2. a drawbar barrel; 3. an elastic member; 4. a limiting ring; 5. a first support ring; 6. a dust ring; 7. a pilot piston; 8. a second support ring; 9. a guide portion; 10. a buffer cavity; 11. a connecting ring; 12. a rubber handle.

Detailed Description

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that, if the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, the description is only for convenience of description and simplification, but the indication or suggestion that the device or element to be referred must have a specific position, be constructed and operated in a specific position, and thus, cannot be understood as a limitation to the present invention.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not require that the components be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present invention, "a plurality" means at least 2.

In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "set", "mounted", "connected" and "connected" should be interpreted broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Examples

Referring to fig. 1 to 3, fig. 1 is a schematic structural diagram of a drawbar according to an embodiment of the present invention;

fig. 2 is a schematic view showing the connection between the traction rod 1 and the traction rod barrel 2 according to the embodiment of the present invention;

fig. 3 is a schematic structural view of another view angle of the drawbar according to the embodiment of the present invention.

The embodiment of the application provides a take bradyseism's traction lever 1, and it includes interconnect's traction pull rod 1 and traction lever barrel 2, and traction lever barrel 2 one end is seted up rather than the communicating port in inside, and traction pull rod 1 stretches into in traction lever barrel 2 from the port. The traction rod barrel 2 is a part for connecting the traction rod 1 with a towed vehicle body, is hollow inside and is used for installing parts such as a spring, a guide piston 7 and the like.

The end of the traction pull rod 1 extending into the traction rod barrel 2 is connected with the inner wall of the traction rod barrel 2 through the elastic piece 3, buffer cavities 10 are formed in the two sides of the traction rod barrel 2, which are bounded by the end of the traction pull rod 1, and when the end of the traction pull rod 1 moves to the buffer cavities 10 on any side, the elastic piece 3 on the side is compressed, and the elastic piece 3 on the other side is stretched.

In the present embodiment, the traction link 1 and the guide piston 7 are fixed by a locking screw, as shown in fig. 2. The locking screw is used for connecting the guide piston 7 and the traction pull rod 1 into a whole, and the bolt type connection is easier than the structure disassembly of connection methods such as welding and the like.

The traction rod adopts a two-section design, and the traction rod 1 and the traction rod barrel 2 are separated; the traction rod barrel 2 is connected with a device to be pulled through hinge structures such as a bolt, the traction pull rod 1 is inserted into the traction rod barrel 2 and is pressed from two ends along the direction of the traction pull rod 1 by two sections of springs, and when an end cover on the traction rod barrel 2 is covered, the springs are pressed to generate elastic deformation to generate elasticity.

The advantage of the spring pre-compression is that the traction pull rod 1 and the traction rod barrel 2 can be in a relatively stable state, obvious relative displacement can not occur when the stress is not large, and the spring can react more quickly to play a role in cushioning when being impacted by large thrust or pulling force.

The end of the traction pull rod 1 is provided with a guide piston 7 for reducing the friction between the traction pull rod 1 and the inner wall of the traction rod cylinder 2, preventing jamming, reducing friction loss and prolonging the service life.

And a guide ring and a dust ring 6 are arranged at the position where the end cover arranged at the end port is contacted with the traction pull rod 1, so that the friction of the traction pull rod 1 is reduced, and dust is prevented from entering.

When the traction rod pulls the equipment, the equipment is accelerated from 0 at the starting moment, the front end spring of the traction rod extends, the rear end spring compresses, the impact force at the starting moment is absorbed and released within a certain time and is transmitted to the vehicle body, the spring is restored to the original state, and the vehicle body is accelerated to the same speed as the traction speed within the time; when the towing object (such as a towing vehicle or manual towing) stops suddenly, the vehicle body slides forwards continuously due to inertia, the front-end spring is compressed, the rear-end spring is extended, impact force generated by the inertia of the vehicle body is absorbed, and the impact force is released in a certain time, so that the vehicle body stops, and the spring restores the original shape.

The movable equipment has multiple transfer modes, mainly includes initiative and passively, and passive transfer mode has contained transport modes such as hoist and mount, fork truck transport, traction, the most common and most reliable is just to pull the transfer, and this kind of mode is fit for all equipment and the vehicle of taking the removal wheel certainly, transports efficiently, and the transfer mode is reliable and required operating space is narrow and small, and is also low to operating personnel's technical requirement, and this is the solution content that this patent was directed against.

The traction transfer mode is generally divided into a flexible mode and a non-flexible mode, flexible traction passes through a soft rope such as a steel cable, a chain, a rope, a hoisting belt and the like, and the biggest defect of the traction mode is that the control force on the traction equipment is weaker, the speed of the traction equipment can be fast and slow, the traction speed is asynchronous with the traction speed, the traction rope is stressed at the starting moment and has a high risk of fracture, and the traction equipment can slide for a distance to collide with a front object without a brake mechanism at the emergency stop moment; the inflexible traction approach can solve these problems of the flexible approach, but still has some disadvantages, and the patent design aims to improve these disadvantages.

The biggest defect of the inflexible traction mode is that the traction rod is rigidly connected with the equipment to be dragged due to the fact that the traction rod impacts the equipment when the equipment is started or stopped, large vibration is generated, the equipment can be damaged, and the structural strength of a vehicle body or the service life of parts can be influenced in severe cases. Therefore, the traction rod adopts a flexible design, and the impact energy is absorbed by the spring, so that the vehicle body is more smoothly started and stopped, the impact is avoided, and the vibration is reduced.

In this embodiment, the port extends inward to form a stop collar 4 that abuts the resilient member 3.

In this embodiment, the inner wall of the stop ring 4 is provided with a first support ring 5 and a dust ring 6 slidably connected to the drag link 1. The first support ring 5 is in contact with the traction pull rod 1 and is used for reducing friction between the traction pull rod 1 and an end cover (a limiting ring 4) and limiting radial runout of the traction pull rod 1, so that the coaxiality of the traction pull rod 1 and the end cover is better. The dust ring 6 is arranged on the end cover (the limiting ring 4) to prevent dust from entering the drawbar barrel 2 to aggravate friction and influence service life and the like.

The end cover (the limiting ring 4) can also be fastened on the traction rod barrel 2 through threads to tightly press the spring, and has the functions of dust prevention and traction rod 1 guiding, and the threaded installation mode of the end cover enables the installation and the disassembly to be convenient, and the assembly, the maintenance and the replacement are convenient.

The traction pull rod 1 is used for being connected with traction equipment, the other end of the traction pull rod is connected with the guide piston 7, the force is transmitted to a vehicle body through a spring by screw fastening, and the end of the traction pull rod 1 is designed as a pull ring, so that the traction pull rod has universality, can be connected with various traction equipment, and can also be pulled by manpower.

In this embodiment, the elastic member 3 is a spring.

The traction and shock absorption springs are core parts for shock absorption of the traction rods in the application, are two in total and are respectively positioned at the front end and the rear end of the guide piston 7, the springs are not fixed in the traction rod barrel 2 (the two ends of the springs are fixed), the radial positions of the springs are limited by the traction rod barrel 2, the axial displacement of the traction rod barrel 2, the end covers and the end faces of the guide piston 7 are limited, and buffering is realized between the traction pull rod 1 and the traction rod barrel 2.

Of course, the spring can be a whole, two ends of the spring are respectively connected with the limiting ring 4 and the inner wall of the bottom of the traction rod barrel 2, the traction pull rod 1 extends into the spring and is fixedly connected with the middle of the spring or detachably connected with the middle of the spring, corresponding functions can be realized, and the adopted principles are similar and are all within the protection scope of the application.

In this embodiment, the end of the traction rod 1 extending into the traction rod barrel 2 is further connected with a guide piston 7, the outer wall of the guide piston 7 is in sliding fit with the inner wall of the traction rod barrel 2, two ends of the guide piston 7 are respectively fixedly connected with the two elastic members 3, and the other ends of the two elastic members 3 are respectively fixedly connected with the limiting ring 4 and the inner wall of the bottom end of the traction rod barrel 2.

The guide piston 7 is used for guiding the moving direction of the traction pull rod 1 in the traction rod barrel 2, friction is reduced, the traction pull rod 1 is prevented from being clamped in the traction rod barrel 2, meanwhile, the two ends of the piston are pressed by the spring, and the structure is convenient to disassemble and assemble, good in maintainability and low in failure rate.

In this embodiment, the outer wall of the guide piston 7 is provided with a second support ring 8 which is in sliding engagement with the inner wall of the drawbar barrel 2.

The second support ring 8 is used for making up a gap between the guide piston 7 and the inner wall of the traction rod barrel 2, so that the coaxiality between the guide piston 7 and the traction rod barrel 2 is higher, and meanwhile, the function of reducing motion friction is achieved, the piston moves more smoothly, and the service life of a traction rod is prolonged.

In this embodiment, the end of the guide piston 7 remote from the port extends into the elastic member 3 to form a guide portion 9.

In this embodiment, the drawbar barrel 2 is provided with a cotter pin and a holed pin at the end remote from the port.

In this embodiment, the end of the traction rod 1 extending out of the drawbar barrel 2 is provided with a connection ring 11.

In this embodiment, the outer wall of the drawbar barrel 2 is further provided with a rubber handle 12.

The working principle of the draw bar 1 with the shock absorption is as follows: the traction rod adopts a two-section design, and the traction rod 1 and the traction rod barrel 2 are separated; the traction rod barrel 2 is connected with a device to be pulled through hinge structures such as a bolt, the traction pull rod 1 is inserted into the traction rod barrel 2 and is pressed from two ends along the direction of the traction pull rod 1 by two sections of springs, and when an end cover on the traction rod barrel 2 is covered, the springs are pressed to generate elastic deformation to generate elasticity.

It will be evident to those skilled in the art that the application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The draw bar with the shock absorption function is characterized by comprising a draw bar and a draw bar barrel which are connected with each other, wherein one end of the draw bar barrel is provided with a port communicated with the interior of the draw bar barrel, and the draw bar extends into the draw bar barrel from the port;

2. A cushioned drawbar according to claim 1 wherein said port extends inwardly to form a stop collar in abutment with said resilient member.

3. The drawbar with cushioning according to claim 2, wherein the inner wall of the stop collar is provided with a first support ring and a dust ring slidably connected to the drawbar.

4. A slackened drawbar as claimed in claim 1 wherein the resilient member is a spring.

5. The draft bar with the shock absorption function according to claim 3, wherein a guide piston is further connected to the end of the draft bar extending into the draft bar barrel, the outer wall of the guide piston is in sliding fit with the inner wall of the draft bar barrel, two ends of the guide piston are fixedly connected with the two elastic pieces respectively, and the other ends of the two elastic pieces are fixedly connected with the limiting ring and the inner wall of the bottom end of the draft bar barrel respectively.

6. A drawbar with cushioning according to claim 5, characterised in that the outer wall of the guide piston is provided with a second support ring which is a sliding fit with the inner wall of the drawbar barrel.

7. A drawbar with cushioning according to claim 6 wherein the end of the pilot piston remote from the port extends into the resilient member to form a pilot.

8. A slackened drawbar according to claim 1 wherein the drawbar barrel is provided with a cotter pin and a holed pin at the end remote from the port.

9. The draft bar with the cushioning function as claimed in claim 1, wherein a connecting ring is provided at an end of the draft bar extending out of the draft bar barrel.

10. A drawbar with cushioning according to claim 1, characterized in that the outer wall of the drawbar barrel is further provided with a rubber grip.