Symmetrical traction telescopic mechanism

Abstract

The utility model discloses a symmetrical traction telescopic mechanism, which relates to the technical field of road wreckers and comprises an auxiliary frame assembly, a traction oil cylinder, two transverse guide rail mechanisms, two traction trolleys and two dragging plates. The two transverse guide rail mechanisms are oppositely arranged on the auxiliary frame assembly in parallel; the two traction trolleys are respectively arranged on the corresponding transverse guide rail mechanisms in a sliding manner; the traction oil cylinder is connected with the two traction trolleys through a transmission mechanism and used for driving the traction trolleys to move. And the two dragging plates are respectively arranged on the corresponding transverse guide rail mechanisms and are connected with the traction trolley, and can slide in and out of the transverse guide rail mechanisms under the driving of the traction trolley. The bidirectional side-mounted road wrecker can be applied to left and right bidirectional side-mounted road wreckers.

Description

TECHNICAL FIELD

[0001] The utility model relates to road wrecker technical field, specifically to a symmetrical type traction telescopic mechanism. BACKGROUND

[0002] The existing side-mounted road wrecker mainly realizes the transverse movement and vertical lifting of the fault vehicle through the horizontal mechanism and vertical mechanism, the horizontal mechanism is mostly arranged above the automobile chassis, and the vertical mechanism is arranged on the horizontal mechanism. The side-mounted road wrecker with the structure is always inclined to the left side or the right side of the wrecker, the horizontal mechanism and the vertical mechanism are arranged relatively concentratedly, so the concentrated space above the chassis is relatively large, thereby the center of gravity of the whole vehicle is transversely deviated; in addition, the side-mounted road wrecker with the structure cannot realize the left-right bidirectional side mounting function.

[0003] For example, the Chinese patent document "a wrecker pure electric traction mechanism" (patent application number: 201720737154.8) discloses a wrecker pure electric traction mechanism, which comprises a traction mechanism arranged below the rear end frame of the wrecker, a power battery, a driving motor and an oil pump, the power source of the traction mechanism is provided with direct current high voltage electricity from the power battery loaded on the vehicle to drive the oil pump to work, so that the power output of the traction mechanism is realized, the traction mechanism comprises a telescopic oil cylinder, a lifting adjustment oil cylinder, a tire foot and a linkage mechanism, the telescopic oil cylinder is connected with the frame through a mounting seat; the whole traction mechanism adopts a pure electric driving mechanism, realizes zero emission, energy saving and environmental protection; the telescopic oil cylinder, the lifting adjustment oil cylinder and the frame form a triangular support structure, the mechanism can control the parallelism with the ground when falling to the ground, that is, the angle with the ground is zero, so that the "approach angle" is no longer limited, and the application range is wide. However, this result also cannot realize the left-right bidirectional side mounting function. UTILITY MODEL CONTENTS

[0004] In view of the defects in the prior art, the utility model aims at providing a symmetrical type traction telescopic mechanism which can be applied to the left-right bidirectional side-mounted road wrecker.

[0005] In order to achieve the above purpose, the utility model adopts the technical scheme: a symmetrical type traction telescopic mechanism, comprising a sub-frame assembly, a traction oil cylinder, two horizontal guide rail mechanisms, two traction trolleys and two drag plates; the two horizontal guide rail mechanisms are arranged in parallel on the sub-frame assembly; the two traction trolleys are respectively arranged on the corresponding horizontal guide rail mechanisms; the traction oil cylinder is connected with the two traction trolleys through a transmission mechanism, and is used for driving the traction trolley to move; the two drag plates are arranged on the corresponding horizontal guide rail mechanisms and connected with the traction trolley, and can be driven by the traction trolley to slide into and out of the horizontal guide rail mechanism.

[0006] Further improvement lies in that the cross rail mechanism is in the form of an upside U-shaped structure, and the bottom plate of the cross rail mechanism is provided with linear guides matched with the traction trolley.

[0007] Further improvement lies in that the cross rail mechanism is in the form of an upside U-shaped structure, and the bottom plate of the cross rail mechanism is provided with linear guides matched with the traction trolley.

[0008] Further improvement lies in that the traction trolley comprises a trolley body, the bottom of the trolley body is provided with first and second traveling wheels at both ends, and the height of the first traveling wheel is higher than that of the second traveling wheel; the top of the trolley body is connected with the traction plate through a connecting column, and the traction plate is provided with a tow pin for connecting the drag board.

[0009] Further improvement lies in that the transmission mechanism comprises two symmetrically arranged steel wires, and the two steel wires are connected with the corresponding traction trolleys through pulley blocks.

[0010] Further improvement lies in that the bottom of the traction plate is provided with an upper clamping block, the top of the trolley body is provided with a lower clamping block, and the upper and lower clamping blocks are used for clamping the steel wires.

[0011] Further improvement lies in that the two ends of the cross rail mechanism are respectively provided with steering shafts matched with the steel wires.

[0012] Further improvement lies in that the pulley block comprises a moving plate, a first fixed plate, a second fixed plate and two third fixed plates.

[0013] The first and second fixed plates are horizontally arranged opposite to each other on the sub-frame assembly; the first fixed plate is provided with a first locking plate for fixing the ends of the two steel wires, and the two sides of the first locking plate are respectively provided with a second pulley, a third pulley and a fourth pulley; the second fixed plate is provided with a second locking plate for fixing the other ends of the two steel wires, and the two sides of the second locking plate are respectively provided with a ninth pulley, a tenth pulley and a twelfth pulley.

[0014] The moving plate is horizontally and slidably arranged between the first and second fixed plates, and is connected with the piston rod of the traction cylinder; the top surface of the moving plate is provided with a first pulley and an eleventh pulley on both sides.

[0015] The two third fixed plates are longitudinally arranged opposite to each other on the sub-frame assembly, and the top corners of the third fixed plates are respectively provided with a fifth pulley, a sixth pulley, a seventh pulley and an eighth pulley.

[0016] Further improvement lies in that one end of the steel wire rope is fixedly connected with the first lock plate, and the other end of the steel wire rope is sequentially wound around the first pulley, the second pulley, the first pulley, the third pulley, the fourth pulley, the fifth pulley, the sixth pulley, the seventh pulley, the eighth pulley, the ninth pulley, the tenth pulley, the eleventh pulley, the twelfth pulley, and then fixedly connected with the second lock plate.

[0017] Further improvement lies in that the lateral slide rails are arranged on the auxiliary frame assembly, and the third walking wheels that are matched with the lateral slide rails are arranged on the two sides of the moving plate.

[0018] The utility model discloses the beneficial effect lies in:

[0019] In the utility model, the traction telescopic mechanism is symmetrical structure, is completely arranged in the inside of auxiliary frame assembly, and the overall height of auxiliary frame assembly can be controlled in the relatively small size, therefore from the overall appearance of whole car, the space of auxiliary frame assembly above the chassis of the wrecker is relatively small, can greatly reduce the ground clearance of the fault vehicle on the wrecker, and the traction cylinder with smaller stroke can realize the translation of the fault vehicle with larger lateral distance. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the perspective view of symmetrical traction telescopic mechanism in the utility model embodiment;

[0021] Figure 2 It is the perspective view of lateral guide rail mechanism in the utility model embodiment;

[0022] Figure 3 It is the front view of traction trolley in the utility model embodiment;

[0023] Figure 4 It is the side view of traction trolley in the utility model embodiment;

[0024] Figure 5 It is the perspective view of drag plate in the utility model embodiment;

[0025] Figure 6 It is the structure schematic view of transmission mechanism in the utility model embodiment;

[0026] Figure 7 It is the structure schematic view of first fixed plate in the utility model embodiment;

[0027] Figure 8 It is the structure schematic view of second fixed plate in the utility model embodiment;

[0028] Figure 9 It is the structure schematic view of moving plate in the utility model embodiment;

[0029] Figure 10Structure diagram of the third fixed plate in the embodiment of the utility model;

[0030] Figure 11 Working principle diagram of the transmission mechanism in the embodiment of the utility model;

[0031] Figure 12 Working state diagram of the symmetrical traction telescopic mechanism in the embodiment of the utility model.

[0032] Reference signs:

[0033] 1 - subframe assembly;

[0034] 2 - transverse guide rail mechanism; 21 - linear guide rail; 22 - guide roller; 23 - friction block; 24 - steering shaft;

[0035] 3 - traction trolley; 31 - trolley body; 32 - traction plate; 33 - connecting column; 34 - first walking wheel; 35 - second walking wheel; 36 - drag pin; 37 - upper clamping block; 38 - lower clamping block;

[0036] 4 - traction oil cylinder;

[0037] 5 - transmission mechanism; 501 - first pulley; 502 - second pulley; 503 - third pulley; 504 - fourth pulley; 505 - fifth pulley; 506 - sixth pulley; 507 - seventh pulley; 508 - eighth pulley; 509 - ninth pulley; 510 - tenth pulley; 511 - eleventh pulley; 512 - twelfth pulley; 513 - first fixed plate; 514 - second fixed plate; 515 - moving plate; 516 - third fixed plate; 517 - steel wire rope; 518 - first lock plate; 519 - second lock plate; 520 - third walking wheel; 521 - transverse slide rail;

[0038] 6 - drag plate; 61 - connecting hole. DETAILED DESCRIPTION

[0039] The embodiments of the utility model are described in detail below, and the embodiment examples are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout.

[0040] In the description of the utility model, it is necessary to explain that, for the direction words, if the terms "center", "transverse (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as limiting the specific protection scope of the utility model.

[0041] In addition, if the terms "first", "second" are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the "first", "second" features can be explicitly or implicitly included one or more features, and in the description of the utility model, the meaning of "several", "several" is two or more than two, unless otherwise explicitly specified.

[0042] The specific embodiments of the utility model will be further described below in conjunction with the drawings of the specification, so that the technical scheme of the utility model and its beneficial effects are more clear and explicit. The embodiments described below by referring to the drawings are exemplary, and are intended to explain the utility model, and cannot be understood as limiting the utility model.

[0043] Referring to Figure 1 The utility model embodiment provides a symmetrical traction telescopic mechanism, including auxiliary frame assembly 1, still including traction oil cylinder 4, two transverse guide rail mechanisms 2, two traction trolleys 3 and two drag plates 6;

[0044] Referring to Figure 2 Two transverse guide rail mechanisms 2 are arranged in parallel on the auxiliary frame assembly 1, specifically, the cross section of the transverse guide rail mechanism 2 is in the form of U-shaped structure with the opening facing upwards, and the bottom plate of the transverse guide rail mechanism 2 is provided with a linear guide rail 21 matched with the traction trolley 3. The two ends of the transverse guide rail mechanism 2 are respectively provided with a steering shaft 24 matched with the steel wire rope 517.

[0045] Referring to Figure 3 And Figure 4As shown, the two traction trolleys 3 are respectively slidingly arranged on the corresponding transverse guide rail mechanisms 2; specifically, the traction trolley 3 comprises a trolley body 31, the bottom of the trolley body 31 is provided with a first walking wheel 34 and a second walking wheel 35 at both ends, and the height of the first walking wheel 34 is higher than that of the second walking wheel 35; the top of the trolley body 31 is connected with a traction plate 32 through a connecting column 33, and the traction plate 32 is provided with a tow pin 36 for connecting the tow plate 6. The bottom of the traction plate 32 is provided with an upper clamping block 37, and the top of the trolley body 31 is provided with a lower clamping block 38, which are used for clamping the steel wire rope 517.

[0046] Referring to Figures 6 to 11 As shown, the traction oil cylinder 4 is connected with the two traction trolleys 3 through the transmission mechanism 5, which is used for driving the traction trolley 3 to move; specifically, the transmission mechanism 5 comprises two symmetrically arranged steel wire ropes 517, and the two steel wire ropes 517 are respectively connected with the corresponding traction trolley 3 through a pulley block. The pulley block comprises a moving plate 515, a first fixed plate 513, a second fixed plate 514 and two third fixed plates 516; the first fixed plate 513 and the second fixed plate 514 are arranged transversely opposite on the sub-frame assembly 1; the first fixed plate 513 is provided with a first lock plate 518 for fixing the end of the two steel wire ropes 517, and the two sides of the first lock plate 518 are respectively provided with a second pulley 502, a third pulley 503 and a fourth pulley 504; the second fixed plate 514 is provided with a second lock plate 519 for fixing the other end of the two steel wire ropes 517, and the two sides of the second lock plate 519 are respectively provided with a ninth pulley 509, a tenth pulley 510 and a twelfth pulley 512; the moving plate 515 is slidingly arranged between the first fixed plate 513 and the second fixed plate 514, and is connected with the piston rod of the traction oil cylinder 4; the top surface of the moving plate 515 is provided with a first pulley 501 and an eleventh pulley 511 on both sides; the two third fixed plates 516 are longitudinally arranged opposite on the sub-frame assembly 1, and the top corners of the third fixed plates 516 are respectively provided with a fifth pulley 505, a sixth pulley 506, a seventh pulley 507 and an eighth pulley 508. One end of the steel wire rope 517 is fixedly connected with the first lock plate 518, and the other end of the steel wire rope 517 is sequentially wound around the first pulley 501, the second pulley 502, the first pulley 501, the third pulley 503, the fourth pulley 504, the fifth pulley 505, the sixth pulley 506, the seventh pulley 507, the eighth pulley 508, the ninth pulley 509, the tenth pulley 510, the eleventh pulley 511, the twelfth pulley 512, and then fixedly connected with the second lock plate 519. The sub-frame assembly 1 is provided with a transverse sliding rail 521, and the two sides of the moving plate 515 are provided with third walking wheels 520 matched with the transverse sliding rail 521. It can prevent the moving plate from turning over forward and backward when moving transversely under the action of the traction oil cylinder. The moving direction of the traction trolley and the moving direction of the moving plate are opposite, and the stroke is four times.

[0047] Referring toFigure 5 and Figure 12 As shown in the drawings, the two drag plates 6 are arranged on the corresponding transverse guide rail mechanisms 2 and connected with the traction trolley 3, and can be driven by the traction trolley 3 to slide into and out of the transverse guide rail mechanism 2. Specifically, the cross section of the drag plate 6 is in a U-shaped structure with an opening facing downward, and the top wall of the drag plate 6 is provided with a connecting hole 61 matched with the traction trolley 3; the two side plates of the transverse guide rail mechanism 2 are respectively provided with a plurality of guide rollers 22 matched with the inner top wall of the drag plate 6, and the outer sides of the two side plates of the transverse guide rail mechanism 2 are respectively provided with a plurality of friction blocks 23 matched with the inner side wall of the drag plate 6.

[0048] In the description of the specification, the description of the terms "one embodiment", "preferably", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the utility model, and the illustrative description of the above terms in the specification does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0049] Through the description of the structure and principle above, those skilled in the art should understand that the utility model is not limited to the specific embodiments described above, and improvements and replacements of the known technologies in the art based on the utility model all fall within the protection scope of the utility model, which should be limited by the claims.

Claims

1. A symmetrical traction telescopic mechanism comprising a subframe assembly (1), characterized in that: The traction oil cylinder (4), the two transverse guide rail mechanisms (2), the two traction trolleys (3) and the two drag plates (6) are further included. The two transverse guide rail mechanisms (2) are arranged in parallel on the subframe assembly (1). The two traction trolleys (3) are respectively arranged in the corresponding transverse guide rail mechanisms (2). The traction oil cylinder (4) is connected with the two traction trolleys (3) through the transmission mechanism (5) and is used for driving the traction trolleys (3) to move. The two drag plates (6) are respectively arranged on the corresponding transverse guide rail mechanisms (2) and are connected with the traction trolleys (3) and can slide into and out of the transverse guide rail mechanisms (2) under the driving of the traction trolleys (3).

2. The symmetrical traction telescoping mechanism of claim 1, wherein: The transverse guide rail mechanism (2) has a U-shaped structure with an opening facing upward, and the bottom plate of the transverse guide rail mechanism (2) is provided with a linear guide rail (21) matched with the traction trolley (3).

3. The symmetrical traction telescoping mechanism of claim 2, wherein: The drag plate (6) has a U-shaped structure with an opening facing downward, and the top wall of the drag plate (6) is provided with a connecting hole (61) matched with the traction trolley (3); the two side plates of the transverse guide rail mechanism (2) are respectively provided with a plurality of guide rollers (22) matched with the inner top wall of the drag plate (6), and the outer sides of the two side plates of the transverse guide rail mechanism (2) are respectively provided with a plurality of friction blocks (23) matched with the inner side walls of the drag plate (6).

4. The symmetrical traction telescoping mechanism of claim 1, wherein: The traction trolley (3) comprises a trolley body (31), the bottom of the trolley body (31) is provided with a first walking wheel (34) and a second walking wheel (35) at both ends, and the height of the first walking wheel (34) is higher than that of the second walking wheel (35); the top of the trolley body (31) is connected with a traction plate (32) through a connecting column (33), and the traction plate (32) is provided with a drag pin (36) for connecting the drag plate (6).

5. The symmetrical traction telescoping mechanism of claim 4, wherein: The transmission mechanism (5) comprises two symmetrically arranged steel wires (517), and the two steel wires (517) are respectively connected with the corresponding traction trolley (3) through a pulley block.

6. The symmetrical traction telescoping mechanism of claim 5, wherein: The bottom of the traction plate (32) is provided with an upper clamping block (37), and the top of the trolley body (31) is provided with a lower clamping block (38), and the upper clamping block (37) and the lower clamping block (38) are used for clamping the steel wire (517).

7. The symmetrical traction telescoping mechanism of claim 5, wherein: The two ends of the transverse guide rail mechanism (2) are respectively provided with a steering shaft (24) matched with the steel wire (517).

8. The symmetrical traction telescoping mechanism of claim 5, wherein: The pulley block comprises a moving plate (515), a first fixed plate (513), a second fixed plate (514) and two third fixed plates (516). The first fixed plate (513) and the second fixed plate (514) are arranged in parallel on the subframe assembly (1); the first fixed plate (513) is provided with a first lock plate (518) for fixing the ends of the two steel wires (517), and the two sides of the first lock plate (518) are respectively provided with a second pulley (502), a third pulley (503) and a fourth pulley (504); the second fixed plate (514) is provided with a second lock plate (519) for fixing the other ends of the two steel wires (517), and the two sides of the second lock plate (519) are respectively provided with a ninth pulley (509), a tenth pulley (510) and a twelfth pulley (512). The mobile plate (515) is transversely slidably arranged between the first fixed plate (513) and the second fixed plate (514) and is connected with the piston rod of the traction oil cylinder (4); the top surface of the mobile plate (515) is provided with the first pulley (501) and the eleventh pulley (511) on both sides; Two third fixed plates (516) are longitudinally oppositely arranged on the auxiliary frame assembly (1), and the top corners of the third fixed plates (516) are respectively provided with the fifth pulley (505), the sixth pulley (506), the seventh pulley (507) and the eighth pulley (508).

9. The symmetrical traction telescoping mechanism of claim 8, wherein: One end of the steel wire rope (517) is fixedly connected with the first lock plate (518), and the other end of the steel wire rope (517) is sequentially wound around the first pulley (501), the second pulley (502), the first pulley (501), the third pulley (503), the fourth pulley (504), the fifth pulley (505), the sixth pulley (506), the seventh pulley (507), the eighth pulley (508), the ninth pulley (509), the tenth pulley (510), the eleventh pulley (511), the twelfth pulley (512), and then is fixedly connected with the second lock plate (519) after the eleventh pulley (511).

10. The symmetrical traction telescoping mechanism of claim 8, wherein: The auxiliary frame assembly (1) is provided with a transverse sliding rail (521), and the two sides of the mobile plate (515) are provided with third walking wheels (520) matched with the transverse sliding rail (521).

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