CN210652990U - Semitrailer and rear protection device thereof - Google Patents

Abstract

The utility model discloses a semitrailer and protector behind thereof, including the semitrailer main part, the semitrailer main part is provided with first baffle, the first pivot of first baffle fixedly connected with, first pivot swivelling joint has first connecting plate, a plurality of through-holes have been seted up to first connecting plate, first connecting plate is provided with the second connecting plate, the bottom fixedly connected with second baffle of two second connecting plates, a plurality of connecting holes have been seted up to the second connecting plate, and connecting hole and through-hole phase-match, the connecting hole is provided with two screw rods, the inner chamber of connecting hole and the outer wall slip of screw rod cup joint, the one end of screw rod outer wall is passed through-hole threaded connection and is had the nut. The utility model discloses utilize the mode that sets up of second baffle, a plurality of through-holes have been seted up to equidistance on the first connecting plate, and a plurality of connecting holes have been seted up to second connecting plate equidistance, make different connecting holes and through-hole phase-match just can adjust the relative distance between first baffle and the second baffle to change protector's height.

Description

Semitrailer and rear protection device thereof

Technical Field

The utility model relates to a protector field, in particular to semitrailer and back protector thereof.

Background

In order to improve the security, corresponding protector can generally be installed to the back lower part of semitrailer, or provide the device of same safeguard function, its purpose is in order to avoid the rear vehicle to be drawn into under the wheel, the rear protection device beading is at the afterbody of semitrailer behind the semitrailer on the market, perhaps installs the afterbody at the semitrailer through the bolt, and most of on the market is only a semitrailer of back protection adaptation, need redesign different structures or not unidimensional rear protection device promptly according to the semitrailer of difference.

Disclosure of Invention

An object of the utility model is to provide a semitrailer and protector behind it to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a semitrailer and back protector thereof, includes the semitrailer main part, the bottom of semitrailer main part one side is provided with first baffle, the first pivot of bottom symmetry fixedly connected with of first baffle, the outer wall of first pivot rotates and is connected with first connecting plate, a plurality of through-holes have been seted up to the front equidistance of first connecting plate, the front of first connecting plate is provided with the second connecting plate, two the bottom fixedly connected with second baffle of second connecting plate, a plurality of connecting holes have been seted up to the front equidistance of second connecting plate, just the inner chamber of connecting hole and the inner chamber phase-match of through-hole, the front of connecting hole is provided with two screw rods, the inner chamber of connecting hole cup joints with the outer wall slip of screw rod, the one end of screw rod outer wall is passed through-.

Preferably, the bottom of semi-mounted main part one side symmetry fixedly connected with fixed block, two the one end of fixed block and one side fixed connection of first baffle.

Preferably, two one sides opposite to the first connecting plates are fixedly connected with fixing plates, the middle part of one side of each fixing plate is fixedly connected with a second rotating shaft, and the outer wall of each second rotating shaft is rotatably connected with a connecting rod.

Preferably, one side fixedly connected with fixing device of semi-mounted body bottom, fixing device's middle part is provided with the pneumatic cylinder, the output of pneumatic cylinder is connected with the one end transmission of connecting rod.

Preferably, fixing device includes two support columns, the top and the semi-mounted main part fixed connection of support column, two the equal fixedly connected with dead lever in bottom of the relative one side of support column, two relative one sides of dead lever all rotate and are connected with the main shaft, the outer wall and the pneumatic cylinder transmission of main shaft are connected.

Preferably, the hydraulic cylinder is electrically connected with an external power supply through an external hydraulic cylinder switch.

The utility model discloses a technological effect and advantage:

1. the utility model discloses utilize the setting mode of second baffle, second baffle is through first connecting plate and second connecting plate and first baffle fixed connection, and equidistant a plurality of through-holes have been seted up on first connecting plate, and the equidistance of second connecting plate has seted up a plurality of connecting holes, and connecting hole and through-hole phase-match, make different connecting holes and through-hole phase-match just can adjust the relative distance between first baffle and the second baffle to change protector's height, solved the problem that a protection only adapts to a section semitrailer;

2. the utility model discloses utilize the mode that sets up of pneumatic cylinder, first connecting plate rotates through first pivot and first baffle to be connected, can make the second baffle use first baffle to rotate as the center, and when the pneumatic cylinder switch was opened, drive the second baffle and rotate, avoid the semitrailer going on subaerial in height hole, the protector of semitrailer can take place to interfere the collision with ground, avoids causing the protector to damage, and semi-trailer owner causes economic loss.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic side view of the first baffle of the present invention.

Fig. 3 is a schematic view of the front structure of the first baffle of the present invention.

Fig. 4 is the utility model discloses the pneumatic cylinder structural diagram that bows.

In the figure: 1. a semi-mounted main body; 2. a first baffle plate; 3. a first rotating shaft; 4. a first connecting plate; 401. a through hole; 5. a second connecting plate; 501. connecting holes; 6. a second baffle; 7. a screw; 8. a nut; 9. a fixing plate; 10. a fixed block; 11. a connecting rod; 12. a fixing device; 121. a support pillar; 122. fixing the rod; 123. a main shaft; 13. a second rotating shaft; 14. and a hydraulic cylinder.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a semitrailer and a rear protection device thereof as shown in figures 1-4, which comprises a semitrailer body 1, wherein the bottom of one side of the semitrailer body 1 is provided with a first baffle 2, the first baffle 2 and a second baffle 6 improve the safety performance to avoid rear vehicles from being involved under wheels, the bottom of the first baffle 2 is symmetrically and fixedly connected with a first rotating shaft 3, the outer wall of the first rotating shaft 3 is rotatably connected with a first connecting plate 4, the front side of the first connecting plate 4 is equidistantly provided with a plurality of through holes 401, the distance between the second baffle 6 and the first baffle 2 can be adjusted through the design of the through holes 401 and the connecting holes 501, so that the same protection device can adapt to trucks with different models, the front side of the first connecting plate 4 is provided with a second connecting plate 5, the bottoms of the two second connecting plates 5 are fixedly connected with a second baffle 6, the front side of the second connecting plate 5 is equidistantly provided with, the inner cavity of the connecting hole 501 is matched with the inner cavity of the through hole 401, two screws 7 are arranged on the front face of the connecting hole 501, the inner cavity of the connecting hole 501 is in sliding sleeve joint with the outer walls of the screws 7, one end of the outer wall of each screw 7 penetrates through the through hole 401 to be in threaded connection with a nut 8, fixing blocks 10 are symmetrically and fixedly connected to the bottom of one side of the semi-trailer main body 1, and one ends of the two fixing blocks 10 are fixedly connected with one side of the first baffle;

the opposite sides of the two first connecting plates 4 are fixedly connected with a fixing plate 9, the middle part of one side of the fixing plate 9 is fixedly connected with a second rotating shaft 13, the outer wall of the second rotating shaft 13 is rotatably connected with a connecting rod 11, one side of the bottom of the semi-trailer body 1 is fixedly connected with a fixing device 12, the middle part of the fixing device 12 is provided with a hydraulic cylinder 14, the output end of the hydraulic cylinder 14 is in transmission connection with one end of the connecting rod 11, the switch of the hydraulic cylinder 14 is turned on, and the second baffle 6 can be pushed to rotate, so that the horizontal position of the second baffle 6 is improved, and the protective device is prevented;

the fixing device 12 comprises two supporting columns 121, the tops of the supporting columns 121 are fixedly connected with the semi-trailer body 1, the bottoms of the opposite sides of the two supporting columns 121 are fixedly connected with fixing rods 122, the opposite sides of the two fixing rods 122 are rotatably connected with a main shaft 123, and the outer wall of the main shaft 123 is in transmission connection with the hydraulic cylinder 14;

the hydraulic cylinder 14 is electrically connected to an external power source through an external hydraulic cylinder switch.

This practical theory of operation: firstly, fixing a first baffle 2 on a semitrailer body 1 through a fixing block 10, and then changing the distance between the first baffle 2 and a second baffle 6 according to the model of a semitrailer;

firstly loosening the nut 8, drawing out the screw 7 from the inner cavity of the connecting hole 501, then adjusting the distance between the first baffle plate 2 and the second baffle plate 6 according to the semitrailer to enable the connecting hole 501 to correspond to the through hole 401, and after the adjustment is finished, penetrating one end of the screw 7 through the connecting hole 501 and the through hole 401 and fixing the screw by the nut 8;

after the position of the second baffle 6 is adjusted, when the semitrailer runs on the hollow ground, firstly, the switch of the hydraulic cylinder 14 is turned on, the hydraulic cylinder 14 drives the connecting rod 11 to move, the connecting rod 11 pushes the fixing plate 9, so that the second baffle 6 rotates by taking the first baffle 2 as the center, the horizontal position of the second baffle 6 is improved, and when the semitrailer passes through the hollow ground, the hydraulic cylinder 14 drives the second baffle 6 to recover to the initial position.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims (6)

1. The utility model provides a semitrailer and back protector thereof, includes semitrailer main part (1), its characterized in that: a first baffle (2) is arranged at the bottom of one side of the semi-trailer body (1), the bottom of the first baffle (2) is symmetrically and fixedly connected with a first rotating shaft (3), the outer wall of the first rotating shaft (3) is rotationally connected with a first connecting plate (4), a plurality of through holes (401) are arranged on one side of the first connecting plate (4) at equal intervals, a second connecting plate (5) is arranged at one side of the first connecting plate (4), a second baffle plate (6) is fixedly connected at the bottom of the two second connecting plates (5), a plurality of connecting holes (501) are arranged on one side of the second connecting plate (5) at equal intervals, and the inner cavity of the connecting hole (501) is matched with the inner cavity of the through hole (401), two screws (7) are arranged on one side of the connecting hole (501), the inner cavity of the connecting hole (501) is in sliding sleeve joint with the outer wall of the screws (7), one end of the outer wall of the screw rod (7) penetrates through the through hole (401) and is connected with a nut (8) in a threaded mode.

2. A semitrailer and rear protection device therefor according to claim 1, characterised in that: the bottom of one side of the semi-trailer body (1) is symmetrically and fixedly connected with fixing blocks (10), and one ends of the fixing blocks (10) are fixedly connected with one side of the first baffle (2).

3. A semitrailer and rear protection device therefor according to claim 1, characterised in that: two one side fixedly connected with fixed plate (9) that first connecting plate (4) are relative, the middle part fixedly connected with second pivot (13) of fixed plate (9) one side, the outer wall of second pivot (13) rotates and is connected with connecting rod (11).

4. A semitrailer and rear protection device therefor according to claim 1, characterised in that: one side fixedly connected with fixing device (12) of semi-mounted body (1) bottom, the middle part of fixing device (12) is provided with pneumatic cylinder (14), the output of pneumatic cylinder (14) is connected with the one end transmission of connecting rod (11).

5. A semitrailer and rear protection device therefor according to claim 4, characterized in that: fixing device (12) include two support columns (121), the top and semi-mounted body (1) fixed connection of support column (121), two the equal fixedly connected with dead lever (122) in bottom of the relative one side of support column (121), one side that two dead levers (122) are relative all rotates and is connected with main shaft (123), the outer wall and pneumatic cylinder (14) transmission of main shaft (123) are connected.

6. A semitrailer and rear protection device therefor according to claim 4, characterized in that: the hydraulic cylinder (14) is electrically connected with an external power supply through an external hydraulic cylinder switch.

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