CN114248816A - Rescue car traction lever device with adjustable buffer strength - Google Patents

Abstract

The invention provides a buffer strength adjustable rescue vehicle draw bar device, which is characterized by comprising the following components: a traction link; the traction part is arranged at two ends of the traction connecting rod, and the traction part further comprises: draw the sleeve, a buffer function unit locates in the telescopic sleeve seat, buffer function unit's axial length D is less than sleeve seat's axial length D, just: D-D is more than or equal to 50mm and less than or equal to 100 mm. The invention can adjust the length of the buffer rod by utilizing the clearance of the buffer function unit, thereby facilitating the installation of the buffer rod. The type and the buffering strength of the buffering function unit can be adjusted according to different traction working conditions, peak traction force transmitted by the traction rod is reduced, smoothness in the traction process is enhanced, and the service life of the traction rod is prolonged.

Description

Rescue car traction lever device with adjustable buffer strength

Technical Field

The invention mainly relates to a traction rod device, in particular to a rescue vehicle traction rod device with adjustable buffer strength.

Background

The intelligent rail electric car is a novel multi-marshalling rubber-tyred car running in two directions. The track-like running under the virtual track is realized by adopting a full-axis steering control technology based on the design concept of the traditional track traffic system and carrying out electronic constraint on running through active safety control, vehicle-mounted signal control, machine vision and the like.

The intelligent rail runs along the fixed rail during operation, and when the vehicle breaks down, the intelligent rail can obstruct the road, influence the running of the follow-up intelligent rail vehicle, and need to use the rescue vehicle to pull the failed intelligent rail to rapidly drive away from the operation line. Because the intelligent rail has larger body size and dead weight and has different traction force requirements in different marshalling, when the rescue traction is carried out and traction force sudden change working conditions such as emergency braking, ascending and descending and the like occur, the traction rod between the intelligent rail and the rescue vehicle can bear huge peak force, so that the traction process is interrupted or even the traction rod is deformed and damaged. The buffer device is additionally arranged between the traction rods, the buffer strength and the type of the buffer device are set according to different traction working conditions, the service life and the application range of the traction rods are prolonged, and meanwhile, the length of the traction rods can be adjusted by utilizing the longitudinal gaps of the buffer function units when the traction rods are installed, so that the traction rods are convenient to install.

Chinese patent application publication No.: CN109849598A, inventive name: a towing rescue for a damaged lightning protection vehicle is disclosed, the towing rescue has a spring buffering effect, a high-energy rubber buffering sleeve is arranged at the limit position of a compression stroke, and the buffering rubber sleeve can absorb inertia force when the vehicle is braked emergently to achieve the purpose of protecting the vehicle. However, the traction rod only has a buffering function on a compression working condition, the buffering function is not obvious in a stretching working condition, the buffering strength of the spring and the rubber sleeve is limited, and different buffering function units with different strengths and types are replaced according to different traction working conditions.

Chinese patent publication No.: CN111038547A, inventive name: the disclosed device is used for traction between a suspension frame and a vehicle body of a magnetic suspension vehicle, and achieves the aim of protecting the vehicle by absorbing the inertia force of the traction through the linear elasticity of a spring and the nonlinear elasticity of rubber. The device only has a buffering function on the compression working condition, the buffering function is not obvious on the pulling working condition, the performance parameters of the spring and the rubber pad are fixed, and the buffering function units with different strengths and types cannot be replaced according to different traction working conditions.

Disclosure of Invention

Aiming at the problems, the invention adjusts the buffer strength of the traction rod by installing different buffer function units on the traction rod, thereby being suitable for different traction working condition requirements. The buffering function unit is not limited to buffering devices such as rubber and springs commonly used in the prior patent, and can also select buffering function units with different strengths and types according to different traction working conditions by using damping modes such as hydraulic pressure and air pressure.

In order to solve the technical problems, the invention provides a rescue vehicle traction rod device with adjustable buffer strength, which is characterized by comprising:

a traction link;

the traction part is arranged at two ends of the traction connecting rod, and the traction part further comprises:

draw the sleeve, a buffer function unit locates in the telescopic sleeve seat, buffer function unit's axial length D is less than sleeve seat's axial length D, just:

50mm≤D-d≤100mm。

preferably, the invention further provides a rescue vehicle traction rod device with adjustable buffer strength, which is characterized in that the buffer function block further comprises:

the buffer support and the buffer body, the buffer body includes any one kind or the combination in rubber, spring or the hydraulic module.

Preferably, the invention further provides a rescue vehicle traction rod device with adjustable buffer strength, which is characterized in that the buffer support comprises a first connecting part, a sleeve part and a support part, wherein the sleeve part is a hollow cylinder, and the first connecting part and the support part are arranged at two ends of the sleeve part;

the buffer body is embedded in the sleeve seat through the cover plate matched with the first fastener.

Preferably, the invention further provides a rescue vehicle traction rod device with adjustable buffering strength, which is characterized in that two ends of the traction connecting rod are respectively provided with a second connecting part, and the first connecting part of the buffering function unit is fixedly connected with the second connecting part through a second fastener.

Preferably, the invention further provides a buffer strength adjustable rescue vehicle draw bar device, which is characterized in that,

wherein the buffer body is fixed to the support portion and has an integrated structure.

Preferably, the invention further provides a rescue vehicle traction rod device with adjustable buffer strength, which is characterized in that the first fastener and the second fastener comprise bolts.

Compared with the prior art, the buffer rod can be adjusted in length by utilizing the clearance of the buffer function unit, so that the buffer rod is convenient to mount. And the type (rubber, spring, hydraulic pressure and the like) and the buffering strength (rubber hardness, spring elasticity coefficient and hydraulic strength) of the buffering function unit can be adjusted according to different traction working conditions (traction force and traction road conditions), so that the peak traction force transmitted by the traction rod is reduced, the smoothness in the traction process is enhanced, and the service life of the traction rod is prolonged.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the principle of the invention. In the drawings:

FIG. 1 is a cross-sectional structural view of the present invention;

FIG. 2 is a schematic view of a portion (left side) of FIG. 1;

fig. 3 is an exploded view of portions of fig. 1.

Reference numerals

1-traction sleeve

2-buffer function unit

3-cover plate

4-traction connecting rod

5-first bolt

6-second bolt

11-sleeve seat

12-connecting rod

20-buffer body

21-buffer support

211-first connection part

212-socket joint

213-seat part

41-second connection part

Detailed Description

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only examples or embodiments of the application, from which the application can also be applied to other similar scenarios without inventive effort for a person skilled in the art. Unless otherwise apparent from the context, or otherwise indicated, like reference numbers in the figures refer to the same structure or operation.

As used in this application and the appended claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are intended to be inclusive in the plural unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that steps and elements are included which are explicitly identified, that the steps and elements do not form an exclusive list, and that a method or apparatus may include other steps or elements.

The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. 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, further discussion thereof is not required in subsequent figures.

In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited. Further, although the terms used in the present application are selected from publicly known and used terms, some of the terms mentioned in the specification of the present application may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein. Further, it is required that the present application is understood not only by the actual terms used but also by the meaning of each term lying within.

Referring to fig. 1, 2 and 3, the structure of the drawbar arrangement according to the present invention is shown, and is described in detail as follows:

the device includes: a traction link 4 and traction parts arranged at two ends of the link 4, wherein one of the traction parts is taken as an example in the figure, and the specific composition is disclosed in detail.

The traction part comprises a traction sleeve 1, a buffering function unit 2 and a cover plate 3. Wherein the traction sleeve 1 comprises a sleeve seat 11 and a extension rod 12. Wherein the sleeve seat 11 has an axial length D.

The buffer function unit 2 includes a buffer body 20 and a buffer support 21, the buffer support 21 includes a first connection portion 211, a sleeve portion 212 and a support portion 213, the sleeve portion 212 is a hollow cylinder, and the first connection portion 211 and the support portion 213 are disposed at two ends of the sleeve portion 212. The functional block 2 has an axial length d.

The damping body 20 may be rubber, a spring or a hydraulic module.

When the traction force requirement is small, rubber is selected and fixed with the support part 213 into a whole through vulcanization processing;

when the traction force requirement is large, a spring is selected and mechanically fixed to the support portion 213, and the structure is also integrated (the right side of fig. 1 shows a buffer function unit formed by the spring).

And the hydraulic module can be applied to the environment with severe traction working conditions.

Both ends of the traction link 4 are provided with second connection portions 41.

When the combination is performed, as shown in fig. 2, the sleeve-connection part 212 of the buffer function unit 2 is sleeved on the extension rod 12 of the traction sleeve 1, and the buffer function unit 2 and the traction sleeve 1 are integrated into a whole by using the cover plate 3 and a fastening member such as a first bolt 5. The first connection portion 211 of the damping function unit 2 is fixedly connected to the second connection portion 41 of the traction link 4 by a fastener such as the second bolt 6. Thus, the integrated connection of the three components is realized.

The other end of the traction link 4 is also in a similar manner.

Since the axial length D of the damping functional unit 2 is smaller than the axial length D of the sleeve seat 11, and:

50mm≤D-d≤100mm

from this, this function block 2 is at the axial certain space that forms of cover barrel seat 11, and buffering function unit 2 can control the small distance and remove about in drawing sleeve 1 after accomplishing according to above-mentioned connection, from this, can adjust the length of drawing connecting rod 4 when drawing connecting rod 4 installation, conveniently draws connecting rod 4 and connects rescue car and trailer.

The invention can be used according to different traction conditions, such as: the type of the buffer function unit 2 is adjusted according to various different factors such as the traction force, the traction road condition and the like, which of rubber, a spring and a hydraulic module is selected, and different buffer strengths such as rubber hardness, spring elasticity coefficient, hydraulic strength and the like.

The embodiment shown in fig. 1 only illustrates two buffer function units with different types on the left and right sides, wherein the left side is made of rubber and the right side is provided with a spring.

The innovation point of the scheme mainly lies in that the length of the traction rod can be adjusted at a small distance, and the traction rod is convenient to install. The type (rubber, spring, hydraulic pressure and the like) and the buffering strength (rubber hardness, spring elasticity coefficient and hydraulic strength) of the buffering function unit can be adjusted according to different traction working conditions (the traction force and the traction road condition), the peak traction force transmitted by the traction rod is reduced, the smoothness in the traction process is enhanced, and the service life of the traction rod is prolonged.

Having thus described the basic concept, it will be apparent to those skilled in the art that the foregoing disclosure is by way of example only, and is not intended to limit the present application. Various modifications, improvements and adaptations to the present application may occur to those skilled in the art, although not explicitly described herein. Such modifications, improvements and adaptations are proposed in the present application and thus fall within the spirit and scope of the exemplary embodiments of the present application.

Also, this application uses specific language to describe embodiments of the application. Reference throughout this specification to "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic described in connection with at least one embodiment of the present application is included in at least one embodiment of the present application. Therefore, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, some features, structures, or characteristics of one or more embodiments of the present application may be combined as appropriate.

Aspects of the present application may be embodied entirely in hardware, entirely in software (including firmware, resident software, micro-code, etc.) or in a combination of hardware and software. The above hardware or software may be referred to as "data block," module, "" engine, "" unit, "" component, "or" system. The processor may be one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), digital signal processing devices (DAPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), processors, controllers, microcontrollers, microprocessors, or a combination thereof. Furthermore, aspects of the present application may be represented as a computer product, including computer readable program code, embodied in one or more computer readable media. For example, computer-readable media may include, but are not limited to, magnetic storage devices (e.g., hard disk, floppy disk, magnetic strips … …), optical disks (e.g., Compact Disk (CD), Digital Versatile Disk (DVD) … …), smart cards, and flash memory devices (e.g., card, stick, key drive … …).

The computer readable medium may comprise a propagated data signal with the computer program code embodied therein, for example, on a baseband or as part of a carrier wave. The propagated signal may take any of a variety of forms, including electromagnetic, optical, and the like, or any suitable combination. The computer readable medium can be any computer readable medium that can communicate, propagate, or transport the program for use by or in connection with an instruction execution system, apparatus, or device. Program code on a computer readable medium may be propagated over any suitable medium, including radio, electrical cable, fiber optic cable, radio frequency signals, or the like, or any combination of the preceding.

Having thus described the basic concept, it will be apparent to those skilled in the art that the foregoing disclosure is by way of example only, and is not intended to limit the present application. Various modifications, improvements and adaptations to the present application may occur to those skilled in the art, although not explicitly described herein. Such modifications, improvements and adaptations are proposed in the present application and thus fall within the spirit and scope of the exemplary embodiments of the present application.

Also, this application uses specific language to describe embodiments of the application. Reference throughout this specification to "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic described in connection with at least one embodiment of the present application is included in at least one embodiment of the present application. Therefore, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, some features, structures, or characteristics of one or more embodiments of the present application may be combined as appropriate.

Similarly, it should be noted that in the preceding description of embodiments of the application, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure aiding in the understanding of one or more of the embodiments. This method of disclosure, however, is not intended to require more features than are expressly recited in the claims. Indeed, the embodiments may be characterized as having less than all of the features of a single embodiment disclosed above.

Numerals describing the number of components, attributes, etc. are used in some embodiments, it being understood that such numerals used in the description of the embodiments are modified in some instances by the use of the modifier "about", "approximately" or "substantially". Unless otherwise indicated, "about", "approximately" or "substantially" indicates that the number allows a variation of ± 20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximations that may vary depending upon the desired properties of the individual embodiments. In some embodiments, the numerical parameter should take into account the specified significant digits and employ a general digit preserving approach. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the range are approximations, in the specific examples, such numerical values are set forth as precisely as possible within the scope of the application.

Although the present application has been described with reference to the present specific embodiments, it will be recognized by those skilled in the art that the foregoing embodiments are merely illustrative of the present application and that various changes and substitutions of equivalents may be made without departing from the spirit of the application, and therefore, it is intended that all changes and modifications to the above-described embodiments that come within the spirit of the application fall within the scope of the claims of the application.

Claims (6)

1. The utility model provides a rescue car draw bar device with adjustable buffer strength which characterized in that, the device includes:

a traction link;

the traction part is arranged at two ends of the traction connecting rod, and the traction part further comprises:

draw the sleeve, a buffer function unit locates in the telescopic sleeve seat, buffer function unit's axial length D is less than sleeve seat's axial length D, just:

50mm≤D-d≤100mm。

2. the rescue vehicle drawbar device with adjustable buffer strength according to claim 1, wherein the buffer function block further comprises:

the buffer support and the buffer body, the buffer body includes any one kind or the combination in rubber, spring or the hydraulic module.

3. The rescue vehicle drawbar device with adjustable buffer strength according to claim 2,

the buffer support comprises a first connecting part, a sleeving part and a support part, the sleeving part is a hollow cylinder, and the first connecting part and the support part are arranged at two ends of the sleeving part;

the buffer body is embedded in the sleeve seat through the cover plate matched with the first fastener.

4. The rescue vehicle drawbar device with adjustable buffer strength according to claim 3,

and second connecting parts are arranged at two ends of the traction connecting rod, and the first connecting part of the buffering function unit is fixedly connected with the second connecting parts through second fasteners.

5. The rescue vehicle drawbar device with adjustable buffer strength according to claim 4,

wherein the buffer body is fixed to the support portion and has an integrated structure.

6. The rescue vehicle drawbar device with adjustable buffer strength according to claim 5,

the first and second fasteners comprise bolts.

Images