CN106314456A - Vertical regulating mechanism of traction pin mounting base - Google Patents

Abstract

The invention discloses a vertical adjustment mechanism of a traction pin installation seat, the vertical adjustment mechanism includes a second drive shaft, a rack and pinion structure, at least one link mechanism unit and a locking mechanism; herein, the driven link, The active link and the installation base form a stable triangular support structure, and the seat plate can be stably supported by the active link and the driven link. When the second drive shaft drives the lower end of the active link to move longitudinally, the height of the active link changes accordingly due to the change of the inclination angle, and then drives the seat plate connected to it to change its height, while the driven link moves along with the active link. The connecting rods move synchronously to support the seat plate. Compared with the chain gear transmission in the prior art, this paper uses the rack and pinion structure to drive the link mechanism unit to adjust the vertical height of the seat plate. The transmission structure is relatively simple and the transmission efficiency is relatively high.

Description

Vertical adjustment mechanism of the traction pin mounting seat

technical field

The invention relates to the technical field of railway vehicles, in particular to a vertical adjustment mechanism for a traction pin mounting seat.

Background technique

With the rapid development of the economy, China is undergoing a logistics revolution to establish an integrated transportation system. A new transportation mode that changes the traditional transportation mode and is efficient, safe, convenient and economical. Multimodal transport is quietly emerging in our country.

Piggyback transport is a new mode of multimodal transport. The main mode of transportation for the railway piggyback transport vehicle is: the tractor drives the chassis or trailer carrying the container directly onto the pallet of the railway piggyback transport vehicle, and then parks and unhooks it. After leaving, the container chassis or trailer is carried by the railway vehicle to the front reloading point, and then the tractor at the arrival location drives the piggyback transport vehicle to hang on the container chassis or trailer, and directly transports to the destination.

Taking the transport trailer as an example, in order to ensure the stability of the trailer during transportation and take into account the transportation efficiency, a traction pin can be used to connect the trailer and the piggyback transport vehicle. That is, a traction pin fixing device is arranged on the piggyback transport vehicle, and the traction pin of the trailer is fixed in the fixing device. When the trailer is placed on the piggyback vehicle by hoisting, moving, etc., its position is not fixed precisely, and there is a certain error range. Therefore, the traction pin fixing device on the piggyback vehicle needs to have a certain degree of adjustment.

At present, the handle is usually used to turn the chain to drive the gear to move back and forth on the rack, and then control the vertical adjustment mechanism of the connecting rod to realize the vertical position adjustment of the traction pin fixing device. The vertical direction in this article refers to the vertical direction of the vehicle body length. The structure of the chain gear transmission mechanism is complicated, and the efficiency is relatively low.

Therefore, how to simplify the structure of the vertical adjustment mechanism of the traction pin fixing device and improve its adjustment efficiency is a technical problem to be solved urgently by those skilled in the art.

Contents of the invention

In order to solve the above technical problems, the present invention provides a vertical adjustment mechanism of the traction pin mounting seat, the traction pin mounting seat includes a seat plate and a mounting base, and the vertical adjustment mechanism includes the following components:

The second drive shaft is arranged laterally and connected with the vehicle body in a circumferential rotation direction;

A rack and gear structure, including a rack and a gear meshed with the rack; the rack is fixed on the installation base, and the gear is fixed on the second drive shaft;

At least one link mechanism unit, including a driving link and a driven link, both of which are located between the seat plate and the installation base; the upper end of the active link is hinged to the seat plate, and the lower end connected to the second drive shaft, the second drive shaft drives the lower end of the active link to reciprocate longitudinally; one of the seat plate and the installation base slides with the corresponding end of the driven link connected, the other is hinged with the other end of the driven link; and the middle of the driven link is hinged with the corresponding position of the active link;

It also includes a locking mechanism for locking the vertical adjustment mechanism at a predetermined height position.

In this way, the driven connecting rod, the driving connecting rod and the installation base form a stable triangular support structure, and the seat plate can be stably supported by the driving connecting rod and the driven connecting rod. When the second drive shaft drives the lower end of the active link to move longitudinally, the height of the active link changes accordingly due to the change of the inclination angle, and then drives the seat plate connected to it to change its height. The connecting rods move synchronously to support the seat plate.

Compared with the chain and gear transmission in the prior art, this paper uses the rack and pinion structure to drive the linkage unit to adjust the vertical height of the seat plate. The transmission structure is relatively simple and the transmission efficiency is relatively high.

Optionally, the lower end of the driven link is hinged to the installation base, and the upper end is slidably connected to the seat plate.

Optionally, a vertical plate is fixed on the lower surface of the seat plate, and an elongated hole extending in the longitudinal direction is opened on the vertical plate, and a transverse shaft is fixed on the upper end of the driven link, and the outer portion of the transverse shaft The end is slidably arranged inside the oblong hole.

Optionally, the number of the driven connecting rods is two, and the two driven connecting rods are arranged in parallel, and are hinged to the driving connecting rod through the same hinge shaft, and the transverse shaft is arranged on the outer side of the slave connecting rod. The bottoms of the two driven links are hinged to the installation base.

Optionally, the linkage mechanism unit further includes a sliding seat, the sliding seat is longitudinally slidably connected to the installation base, and the second drive shaft is connected to the lower end of the active link through the sliding seat, so One end of the sliding seat is rotationally connected with the second drive shaft, and the other end is hinged with the lower end of the active connecting rod.

Optionally, a T-shaped piece is provided on the upper surface of the installation base, and the T-shaped piece includes a vertical wall and a transverse wall, and the transverse wall and the installation base form slideways on both sides of the vertical wall;

The sliding seat includes two parallel first side walls and second side walls, connecting ribs are arranged between the first side walls and the second side walls, and the first side walls and the second side walls The lower end of at least one of the walls is provided with a slide rail extending to the inside of the corresponding side slideway.

Optionally, the locking mechanism includes a lock tongue, at least two through holes extending transversely are arranged on the vertical wall along the longitudinal direction, and the sliding seat is also provided with through holes extending transversely, and the lock tongue can At the same time, it is placed inside the through hole of the vertical wall and the through hole of the sliding seat to lock the sliding seat and the vertical wall.

Optionally, the locking mechanism further includes a transverse bar, the side wall of the sliding seat is provided with a mounting through hole, and the inner end of the transverse bar extends through the mounting through hole to the first The inner side of the two side walls, and the inner end of the cross bar is connected to the deadbolt through a vertical positioning shaft.

Optionally, the number of the linkage mechanism units is two, and the two linkage mechanism units are arranged left and right, and the sliding seats are set in one-to-one correspondence with the linkage mechanism units; each of the sliding seats is provided with There are the dead bolt and the cross bar, and the inner ends of the two cross bars are connected by a link mechanism, and the link mechanism includes a first link, an intermediate link, and a second link that are sequentially hinged. The outer ends of the first connecting rod and the second connecting rod are respectively hinged with the cross bar on the corresponding side, and the middle part of the intermediate connecting rod is hinged with the sliding seat.

Optionally, it also includes a horizontal plate connected between the two sliding seats, the middle part of the intermediate link is hinged to the horizontal plate, and both ends of the horizontal plate are provided with oblong holes extending transversely , the upper end of the positioning shaft is located inside the oblong hole on the corresponding side.

Optionally, it also includes a horizontally arranged lock bar, the lock bar is rotatably supported by the sliding seat, and the lock bar is provided with an L-shaped lock head, and the L-shaped lock head includes a lock handle and a bent part, The lock handle is fixed to the lock bar, and when the lock bar is rotated to the first position, the bent portion can be placed inside the oblong hole to limit the displacement of the positioning shaft.

Optionally, a stopper is fixed on the lock bar, and the stopper has an overhanging part. When the lock bar is rotated to the second position, the overhang part of the stopper abuts against all adjacent The connecting rib is used to limit the further rotation of the lock bar, and the bending part is unlocked from the oblong hole.

Optionally, it also includes a traction pin limit mechanism, including a pull rod, a limit riser, a spring and a driving rod. An extended oblong hole, the driving rod is arranged longitudinally, one end is hinged with the seat plate, and the other end is placed outside through the oblong hole of the limiting vertical plate; the pull rod is horizontally slidably connected with the seat plate, and The inner end of the pull rod is connected to the driving rod outside the oblong hole; the two ends of the spring are respectively connected to the pull rod and the position-limiting vertical plate.

Description of drawings

Fig. 1 is the structural representation of longitudinal adjustment mechanism of the present invention;

Fig. 2 is a schematic diagram of the assembly of the longitudinal adjustment mechanism and the mounting base in Fig. 1;

Fig. 3 is a structural schematic diagram of the vertical adjustment mechanism assembled on the traction pin mounting seat;

Fig. 4 is a structural schematic diagram of the assembly of some components in Fig. 3;

Fig. 5 is a structural schematic diagram of two link mechanism units and the installation position of the seat plate;

Fig. 6 is a structural schematic diagram of a locking mechanism of the present invention;

Fig. 7 is a schematic structural view of the auxiliary locking device of the present invention;

Fig. 8 is a structural schematic diagram of the locking mechanism shown in Fig. 6 and the auxiliary locking device shown in Fig. 7 installed on the mounting base;

Fig. 9 is a structural schematic diagram of a traction pin limiting mechanism of the present invention;

Fig. 10 is a schematic diagram of a three-dimensional structure of a traction pin mounting seat mechanism of the present invention;

Fig. 11 is a schematic structural view of the mounting base of the present invention.

Among them, in Figure 1 to Figure 11:

First drive shaft 11, driving bevel gear 12, driven bevel gear 13, screw rod 14, nut 15, bump 151, handle 16, mounting seat 17;

Second drive shaft 21, rack 22, gear 23, sliding seat 24, first side wall 241, second side wall 242, connecting rib 243, driving link 25, driven link 26, hinge shaft 26a, hinge shaft 26b, T-shaped piece 27, transverse shaft 28, transverse plate 29, oblong hole 29a;

Cross bar 31, dead bolt 32, positioning shaft 33;

Link mechanism 4, first connecting rod 41, middle connecting rod 42, second connecting rod 43;

Lock bar 51, L-shaped lock head 52, block 53;

Pull rod 61, limit vertical plate 62, spring 63, driving rod 64, oblong hole 62a, hinge seat 65;

Traction pin mounting seat 100, mounting base 101, notch 101a, seat plate 102, pin hole 102a, hinged seat 103, hinged seat 105, vertical plate 104, oblong hole 104a, rib 106.

detailed description

This article takes the setting of the traction pin mounting seat mechanism on the piggyback transport vehicle as an example to introduce the technical solutions and technical effects. Of course, those skilled in the art should understand that the traction pin mounting seat mechanism in this article is not limited to being set on the piggyback transport vehicle It can also be installed on other types of vehicles.

In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Please refer to Fig. 1, Fig. 2 and Fig. 10, Fig. 1 is a schematic structural diagram of the longitudinal adjustment mechanism of the present invention; Fig. 2 is a schematic diagram of the assembly of the longitudinal adjustment mechanism and the mounting base in Fig. 1; Fig. 10 is a drawing pin mounting seat of the present invention Schematic diagram of the three-dimensional structure of the mechanism.

The traction pin mounting seat mechanism mainly includes a traction pin mounting seat, a longitudinal adjustment mechanism, a vertical adjustment mechanism, and a locking mechanism. Among them, the traction pin mounting seat is provided with a pin hole that cooperates with the traction pin to lock, the longitudinal adjustment mechanism is used to adjust the longitudinal displacement of the traction pin mounting seat, and the vertical adjustment mechanism is mainly used to adjust the vertical displacement of the traction pin mounting seat, that is displacement in the vertical direction.

It should be noted that the longitudinal direction mentioned in this article refers to the direction along the length of the vehicle body, and the vertical direction refers to the vertical direction.

The longitudinal adjustment mechanism herein includes a first drive shaft 11, a screw nut assembly and a bevel gear transmission mechanism. The first drive shaft 11 is horizontally arranged and connected to the vehicle body in a circumferential rotation direction. Specifically, the first drive shaft 11 can be supported on the vehicle body through the mounting seat 17, and through holes can be arranged on the two sides of the vehicle body. The drive shaft 11 is supported inside the through holes of the side frames of the two vehicle bodies, and the first drive shaft 11 can rotate circumferentially relative to the through holes.

The screw nut assembly includes a screw rod 14 and a nut 15. The screw rod 14 supports the vehicle body longitudinally and is connected with the vehicle body in a circumferential rotation direction, that is, the screw rod 14 can rotate around its own axis relative to the vehicle body. The screw rod 14 has a threaded section, and the threaded section is provided with an external thread , the threaded section is provided with a nut 15 that cooperates with the external thread, the nut 15 is provided with an internal thread, the internal thread of the nut 15 matches the external thread of the screw rod 14, the internal thread of the nut 15 and the external thread of the screw rod 14 can have locking ability , that is to say, the screw rod 14 can only drive the nut 15 to rotate, but the nut 15 cannot drive the screw rod 14 to rotate. For example, the threads matched between the screw rod 14 and the nut 15 are trapezoidal self-locking threads.

Herein, the nut 15 has a mounting seat matched with the traction pin mounting seat 100 . That is to say, the traction pin mounting seat fixes the connecting nut 15 . Herein, the traction pin mounting seat 100 includes a seat plate 102 and a mounting base 101. The seat plate 102 is provided with a vertical pin hole matching with the traction pin. The nut 15 is connected with the mounting base 101 and can drive the mounting base 101 to move longitudinally.

This article also includes a bevel gear transmission mechanism, including a driving bevel gear 12 and a driven bevel gear 13 that are engaged with each other. The driving bevel gear 12 is installed on the first drive shaft 11, and the driven bevel gear 13 is installed on the screw rod 14. The driving bevel gear 12 can be driven to rotate, and the driving bevel gear 12 transmits power to the driven bevel gear. The driven bevel gear rotates and then drives the screw rod 14 to rotate in the circumferential direction. Because the nut 15 is connected with the traction pin mounting seat, the circumferential direction is limited. Through the action of the thread, the nut 15 can only be displaced in the axial direction relative to the screw rod 14, so that the screw rod 14 is driven and installed on the nut. The traction pin mounting seat on 15 is axially displaced along the screw rod 14, that is, the traction pin mounting seat moves longitudinally.

Compared with the prior art where the longitudinal position of the traction pin mounting seat is adjusted through a hydraulic system, the external power in this application document can be transmitted to the nut 15 of the screw nut assembly through the first drive shaft 11 and the bevel gear transmission mechanism, so as to realize the traction pin The longitudinal position adjustment of the mounting seat, that is, the longitudinal position adjustment of the traction pin mounting seat is realized through the mechanical transmission of the bevel gear transmission mechanism and the screw nut assembly, and the reliability of the mechanical transmission is relatively high.

Specifically, the underframe of the piggyback transport vehicle has many components. In order to save the space under the underframe as much as possible, the bevel gear transmission mechanism and the screw nut assembly in this paper can be built inside the middle beam of the underframe. The outer end of the first drive shaft 11 The part extends to the outside through the side wall of the center beam; in this way, the longitudinal adjustment mechanism in this paper basically does not occupy the space of the vehicle underframe, which is conducive to the optimal arrangement of other components on the underframe.

And, the mating threads between the screw rod 14 and the nut 15 in the screw nut assembly can only realize that the screw rod 14 drives the nut 15 to drive, and the nut 15 cannot drive the screw rod 14 to rotate, that is, when the screw rod 14 does not rotate, the nut 15 passes through it and the screw rod 14. The threads can be locked in this position.

Specifically, the thread matched between the screw rod 14 and the nut 15 is a self-locking thread.

At least one protruding end of the first drive shaft 11 is provided with a handle 16 for rotating the first drive shaft 11 . Of course, the two extended ends of the first drive shaft 11 can be provided with handles 16 respectively, so that the operator can drive the first drive shaft 11 to rotate from any side of the vehicle, which improves the flexibility of use.

The installation method for nut 15 and traction pin mounting seat can be by many ways, and preferred mode is as follows herein: the upper surface of nut 15 has projection 151, and the bottom of traction pin mounting seat is provided with recess 101a, and projection 151 and concave The port 101a can be installed in cooperation.

When the traction pin installation base includes a seat plate 102 and an installation base 101 , the notch 101 a is opened on the installation base 101 .

On the basis of the above-mentioned embodiments, this paper also provides a vertical adjustment mechanism for adjusting the vertical height of the seat plate 102. The vertical adjustment mechanism is installed on the upper surface of the installation base 101; that is to say, the seat plate 102 is supported on the upper surface of the installation base 101 through a vertical adjustment mechanism.

Please refer to Figure 3 to Figure 5, and Figure 11, Figure 3 is a schematic structural diagram of the vertical adjustment mechanism assembled on the traction pin mounting seat; Figure 4 is a structural schematic diagram of the assembly of some components in Figure 3; Figure 5 is two connecting rods Schematic diagram of the installation position of the mechanism unit and the seat plate 102; FIG. 11 is a schematic diagram of the installation base of the present invention.

In addition, the vertical adjustment mechanism herein also includes a locking mechanism for locking the vertical adjustment mechanism at a predetermined height. Herein, the vertical position of the seat plate 102 can be adjusted through the vertical adjustment mechanism, so as to adapt to the installation of different lengths of the traction pins.

In a specific embodiment, the vertical adjustment mechanism further includes a second drive shaft 21, a rack and pinion structure and at least one link mechanism unit.

The second drive shaft 21 is arranged laterally and is rotationally connected with the vehicle body in the circumferential direction.

The rack and pinion structure includes a rack 22 and a gear 23 meshed with the rack 22, the rack 22 is fixed on the mounting base 101, and the gear 23 is fixed on the second drive shaft 21, that is to say, the second drive shaft 21 can The driving gear 23 rotates together, that is, the second drive shaft 21 and the gear 23 can rotate synchronously.

The link mechanism unit comprises a driving link 25 and a driven link 26, the driving link 25 and the driven link 26 are all located between the seat plate 102 and the mounting base 101, and the upper end of the active link 25 is hinged to the seat plate 102 , the lower end is connected to the second drive shaft 21, the active link 25 is supported and longitudinally slidably connected to the mounting base 101, and the second drive shaft 21 drives the lower end of the active link 25 to move longitudinally back and forth. One of the seat plate 102 and the mounting base 101 is slidingly connected to the corresponding end of the driven link 26 , and the other is hinged to the other end of the driven link 26 . And the middle part of the driven connecting rod 26 is hinged with the corresponding position of the driving connecting rod 25 .

In this way, the driven link 26 , the active link 25 and the mounting base 101 form a stable triangular support structure, and the seat plate 102 can be stably supported by the active link 25 and the driven link 26 . When the second drive shaft 21 drives the lower end of the active connecting rod 25 to move longitudinally, the height of the active connecting rod 25 changes accordingly due to the change of the inclination angle, and then drives the seat plate 102 connected to it to move to change its height, while the driven The connecting rod 26 moves synchronously with the active connecting rod 25 to support the seat plate 102 .

Compared with the chain and gear transmission in the prior art, this paper uses the rack and pinion structure to drive the linkage unit to adjust the vertical height of the seat plate. The transmission structure is relatively simple and the transmission efficiency is relatively high.

In this paper, the lower end of the driven link 26 is hinged with the mounting base 101 , and the upper end is slidably connected with the seat plate 102 . Specifically, a hinge seat may be provided on the upper surface of the installation base 101, and the driven link 26 is hinged on the hinge seat. The lower surface of the seat plate 102 is fixed with a vertical plate 104, and the vertical plate 104 is provided with an oblong hole 104a extending in the longitudinal direction. Inside the oblong hole 104a.

The lower surface of the seat plate 102 can be provided with a plurality of ribs 106 , and the active connecting rod 25 can be hinged on the ribs 106 .

In a preferred embodiment, each link mechanism unit includes two driven connecting rods 26, the two driven connecting rods 26 are arranged in parallel, and are hinged with the driving connecting rod 25 through the same hinge shaft 26b, and the transverse shaft 28 Set on the outer driven link 26. It should be noted that, herein, the side close to the central longitudinal plane of the seat plate 102 is defined as inner, and the corresponding side away from the central longitudinal plane is defined as outer.

The two driven connecting rods 26 are connected to the driving connecting rod 25 through the same hinge shaft 26b, which is beneficial to ensure the synchronous action of the two connecting rods.

The hinged seats of the two driven links 26 and the mounting base 101 are: hinged seat 103 and hinged seat 105, and the two driven links 26 can also be respectively hinged with the hinged seat 103 and the hinged seat 105 through the same hinged shaft 26a.

In the above-mentioned embodiments, the link mechanism unit may also include a sliding seat 24, which is longitudinally slidably connected to the installation base 101, and the second drive shaft 21 is connected to the lower end of the active connecting rod 25 through the sliding seat 24, and the sliding seat 24 One end is rotationally connected with the second drive shaft 21 , and the other end is hinged with the lower end of the driving link 25 .

When the height is adjusted, the second drive shaft 21 rotates, driving the fixed gear 23 to move longitudinally along the rack 22, and the second drive shaft 21 also moves longitudinally synchronously, so that the second drive shaft 21 pushes the sliding seat 24 longitudinally Move, and then the sliding seat 24 drives the lower end of the active connecting rod 25 to move longitudinally, to adjust the inclination angle of the active connecting rod 25, and finally change the height position of the seat plate 102. In this embodiment, the second driving shaft 21 pushes the active connecting rod 25 to move through the sliding seat 24, which can increase the driving stability.

In order to ensure the sliding directionality of the sliding base 24 relative to the installation base 101 , a slideway may also be provided on the upper surface of the installation base 101 .

In a specific embodiment, the upper surface of the installation base 101 is provided with a T-shaped piece 27, the T-shaped piece 27 includes a vertical wall and a horizontal wall, the cross arm is located at the upper end of the vertical wall, and the lower end of the vertical wall is fixed on the installation base 101, so that the horizontal The arm and the mounting base 101 all surround slideways on both sides of the vertical wall, that is, the inside slideway and the outside slideway. Correspondingly, the sliding seat 24 includes a first side wall 241 and a second side wall 242, a connecting rib 243 is arranged between the first side wall 241 and the second side wall 242, the number of the connecting ribs 243 is multiple, and the first side The lower end of at least one of the wall 241 and the second side wall 242 is provided with a slide rail extending to the inside of the corresponding side slideway.

Both the lower ends of the first side wall 241 and the second side wall 242 may be provided with slide rails extending to the inside of the corresponding side slideway. That is to say, the lower end of the first side wall 241 has a first slide rail, and the first slide rail cooperates with the outer slide rail to slide; the lower end of the second side wall 242 has a second slide rail, and the second slide rail cooperates with the inner slide rail. Road with sliding.

Please refer to Figure 6 and Figure 8, Figure 6 is a schematic structural view of a locking mechanism of the present invention; Figure 8 is a structural schematic view of the locking mechanism shown in Figure 6 and the auxiliary locking device shown in Figure 7 installed on the mounting base.

The locking mechanism in each of the above-mentioned embodiments may include a dead bolt 32, at least two through holes extending transversely are arranged along the vertical vertical wall, and the sliding seat 24 is also provided with through holes extending transversely, the dead bolt 32 can be placed at the same time. Inside the through hole of the vertical wall and the through hole of the sliding seat 24, to lock the vertical wall of the sliding seat 24 and the T-shaped piece 27.

The number and position of the through holes on the vertical wall are related to the height adjustment level of the seat plate 102. For example, when the height of the seat plate 102 needs to be adjusted in three different positions, three through holes can be set on the vertical wall accordingly. By locking the sliding seat 24 on the The three through hole positions satisfy the adjustment of different height positions of the seat plate 102 .

That is, in the above-mentioned embodiment, the dead bolt 32 can be inserted into the through hole corresponding to the vertical wall and the sliding seat 24 to realize the locking of the positions of the vertical wall and the sliding seat 24; Pull out to realize the unlocking of the standing wall and the sliding seat 24 positions.

In order to facilitate the insertion and extraction of the lock tongue 32, further settings herein are as follows.

The locking mechanism can further include a horizontally arranged cross bar 31, the side wall of the sliding seat 24 is provided with a mounting through hole, the inner end of the cross bar 31 extends to the inner side of the second side wall 242 through the mounting through hole, and the horizontal The inner end of the rod 31 is connected to the bolt 32 via a vertical positioning axis.

In this way, the cross bar 31 is limited on the sliding seat 24 and can move longitudinally with the sliding seat 24. When the sliding seat 24 moves to a predetermined position, the dead bolt 32 can be pushed to move laterally by pushing the cross bar 31, so that the dead bolt 32 can be inserted or Get out of the corresponding through holes of the sliding seat 24 and the vertical wall. This locking method is relatively simple.

In each of the above-mentioned embodiments, the number of link mechanism units is two, and the two link mechanism units are arranged left and right, and the sliding seat 24 is set in one-to-one correspondence with the link mechanism units; each sliding seat 24 is provided with a dead bolt 32, a horizontal Rod 31, the inner end of two crossbars 31 is connected by link mechanism 4, and link mechanism 4 comprises the first link 41, the middle link 42, the second link 43 that are sequentially hinged, the first link 41 and the second link 43. The outer ends of the two connecting rods 43 are respectively hinged with the corresponding side crossbars 31 , and the middle part of the middle connecting rod 42 is hinged with the sliding seat 24 .

In this embodiment, when one side of the crossbar 31 is pushed, the crossbar 31 can drive the other side of the crossbar 31 to perform corresponding actions through the linkage mechanism 4, and at the same time realize the locking and unlocking actions of the locking tongues 32 on both sides.

In order to facilitate the arrangement of the link mechanism 4, a horizontal plate 29 is also provided between the two sliding seats 24 herein, the middle part of the middle link 42 is hinged to the horizontal plate 29, and the two ends of the horizontal plate 29 are provided with transversely extending In the oblong hole 29a, the upper end of the positioning shaft 33 is located inside the oblong hole 29a on the corresponding side. As shown in Figure 7, the oblong holes at the two ends of the horizontal plate 29 are defined as the first oblong hole and the second oblong hole in this paper, and the positioning shaft fixedly connected with the left dead bolt 32 is arranged in the first oblong hole, and is connected with the right dead bolt. 32 The fixedly connected positioning shaft is arranged in the second oblong hole.

In this way, when the cross bar 31 pushes the dead bolt 32 to move, the dead bolt 32 can only move in the direction of the oblong hole, which is beneficial to guarantee the moving direction of the dead bolt 32 .

In order to ensure the locking reliability of the deadbolt 32, an auxiliary locking device is further provided herein, and the specific setting is as follows.

Please refer to FIG. 7 , which is a schematic structural diagram of the auxiliary locking device of the present invention.

The auxiliary locking device further includes a lock bar 51 arranged laterally, the lock bar 51 is rotatably arranged on the sliding seat 24, and the lock bar 51 is provided with an L-shaped lock head 52, the L-shaped lock head 52 includes a lock handle and a bent portion, and the lock handle It is fixed on the lock bar 51 , when the lock bar 51 is rotated to the first position, the bent portion can be placed inside the oblong hole 29 a to limit the displacement of the positioning shaft 33 .

The bent portion of the L-shaped lock head 52 can be inserted into the oblong hole 29a to limit the lateral displacement of the positioning shaft 33, which can prevent the bolt 32 from coming out of the through hole due to vehicle bumps, and is conducive to improving the driving safety of the vehicle.

Further, a stopper 53 can also be fixed on the lock bar 51, and the stopper 53 has an overhanging part. When the lock bar 51 is unlocked and rotated to the second position, the overhang part of the stopper 53 abuts against the adjacent connecting rib , to limit the lock bar 51 to continue to rotate, and the bent part and the oblong hole are unlocked.

Please refer to FIG. 9 . FIG. 9 is a schematic structural diagram of a drag pin limiting mechanism of the present invention.

In each of the above-mentioned embodiments, the traction pin mounting seat mechanism can also include a traction pin limiting mechanism, and the traction pin limiting mechanism includes a pull rod 61, a limiting vertical plate 62, a spring 63 and a driving rod 64, and the limiting vertical plate 62 is laterally fixed on the On the lower surface of the seat plate 102, the limit vertical plate 62 is provided with a horizontally extending oblong hole 62a, the driving rod 64 is arranged longitudinally, one end is hinged with the seat plate 102, and the other end passes through the oblong hole 62a of the limit vertical plate 62 and is placed outside. The pull rod 61 is horizontally slidably connected with the seat plate 102, and the inner end of the pull rod 61 is connected to the lever 64 located outside the oblong hole;

Before the traction pin is installed, the outer end of the pull rod 61 is pulled outward, and the pull rod 61 will drive one end of the driving rod 64 to rotate relative to the hinged end of the seat plate. , its structure can refer to Figure 9. The pull rod 61 drives the driving rod 64 to rotate relative to the bottom plate and at the same time elongates the spring 63 until the driving rod leaves the position of the traction pin hole 102a on the seat plate 102, then inserts the traction pin into the pin hole 102a of the seat plate 102, and releases the pull rod 61 At the end, under the reset force of the spring 63, the pull rod 61 and the driving rod 64 return to the initial state, and the driving rod 64 is stuck in the groove of the peripheral wall of the traction pin to limit the position of the traction pin.

This can prevent the traction pin from coming out of the pin hole, and further ensure the reliability of the trailer being fixed on the piggyback transport vehicle.

The vertical adjustment mechanism of the traction pin installation seat provided by the present invention has been introduced in detail above. In this paper, specific examples are used to illustrate the principle and implementation of the present invention, and the descriptions of the above embodiments are only used to help understand the method and core idea of the present invention. It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, some improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims (13)

1. a vertical governor motion for towing pin mounting seat, towing pin mounting seat (100) includes seat board (102) and mounting seat (101), it is characterised in that described vertical governor motion includes with lower component:

Second drive shaft (21), lateral arrangement, and circumferentially rotate with car body and be connected；

Rack pinion structure, including tooth bar (22) and the gear (23) that is meshed with described tooth bar (22)；Described tooth bar (22) is solid Due to described mounting seat (101), residing gear (23) is fixedly installed in described second drive shaft (21)；

At least one linkage unit, including drive connecting rod (25) and follower link (26), both of which is positioned at described seat board (102) and between described mounting seat (101)；The upper end of described drive connecting rod (25) is hinged with described seat board (102), lower end Portion connects described second drive shaft (21), and described second drive shaft (21) drives the bottom of described drive connecting rod (25) longitudinally the most past Multiple mobile；Described seat board (102) and described mounting seat (101) one of which are slided with described follower link (26) respective end Connecting, another one is hinged with the other end of described follower link (26)；And described follower link (26) middle part and described master The relevant position of dynamic connecting rod (25) is hinged；

Also include retaining mechanism, be used for locking described vertical governor motion in desired height position.

Vertical governor motion the most as claimed in claim 1, it is characterised in that the bottom of described follower link (26) is with described Mounting seat (101) is hinged, and upper end is slidably connected with described seat board (102).

Vertical governor motion the most as claimed in claim 2, it is characterised in that the lower surface of described seat board (102) is fixed with vertical Plate (104), described riser (104) offers the slotted hole (104a) extended longitudinally, the upper end of described follower link (26) Portion is fixed with lateral shaft (28), and it is internal that the outer end of described lateral shaft (28) is slidedly arranged on described slotted hole (104a).

Vertical governor motion the most as claimed in claim 3, it is characterised in that the quantity of described follower link (26) is two, Two described follower link (26) be arranged in parallel, and hinged with described drive connecting rod (25) by same jointed shaft, described laterally Axle (28) is arranged at the described follower link in outside (26), and the bottom of follower link described in two (26) is all articulated with described mounting seat (101)。

Vertical governor motion the most as claimed in claim 1, it is characterised in that described linkage unit also includes sliding seat (24), described sliding seat (24) is connected with described mounting seat (101) longitudinal sliding motion, and described second drive shaft (21) is by described Sliding seat (24) connects the bottom of described drive connecting rod (25), one end of described sliding seat (24) and described second drive shaft (21) circumferentially rotating connection, the other end is hinged with the bottom of described drive connecting rod (25).

Vertical governor motion the most as claimed in claim 5, it is characterised in that the upper surface of described mounting seat (101) is arranged Having T-shaped part (27), described T-shaped part (27) to include wall and cross wall, described cross wall and described mounting seat (101) are at described wall Both sides all surround slideway；

Described sliding seat (24) include two the first side walls be arrangeding in parallel and the second sidewall, described the first side wall and the second sidewall it Between be provided with dowel, and described the first side wall and described second sidewall one bottom at least within be provided with extend corresponding Slide rail within side slideway.

Vertical governor motion the most as claimed in claim 6, it is characterised in that described retaining mechanism includes dead bolt (32), along vertical It is disposed with, to described wall, the through hole that at least two extends transversely, described sliding seat (24) is also equipped with extend transversely Through hole, described dead bolt (32) can be concurrently placed at inside through hole and described sliding seat (24) through hole of described wall, described with locking Sliding seat (24) and described wall.

Vertical governor motion the most as claimed in claim 7, it is characterised in that described retaining mechanism also includes the horizontal stroke of horizontally set Bar (31), the sidewall of described sliding seat (24) is provided with installation through hole, and the inner end of described cross bar (31) leads to through described installation Hole extends the inner side of described second sidewall, and the inner end of described cross bar (31) connects described lock by vertically oriented axle (33) Tongue (32).

Vertical governor motion the most as claimed in claim 8, it is characterised in that the quantity of described linkage unit is two, Arranging about linkage unit described in two, described sliding seat (24) is arranged with described linkage unit one_to_one corresponding；Each Described sliding seat (24) is provided with described dead bolt (32), described cross bar (31), and the inner end of cross bar described in two (31) is by even Linkage connects, and described linkage includes the most hinged first connecting rod (41), intermediate connecting rod (42), second connecting rod (43), The outer end of described first connecting rod (41) and described second connecting rod (43) is hinged with cross bar (31) described in corresponding side respectively, described in Between the middle part of connecting rod (42) hinged with described sliding seat (24).

Vertical governor motion the most as claimed in claim 9, it is characterised in that also include being connected to sliding seat described in two (24) Between transverse slat (29), the middle part of described intermediate connecting rod (42) is articulated with described transverse slat (29), and the two of described transverse slat (29) End is provided with the slotted hole of horizontal expansion, and the upper-end part of driving of described locating shaft (33) is inside slotted hole described in corresponding side.

11. vertical governor motions as claimed in claim 10, it is characterised in that also include the locking bar (51) of horizontally set, institute State locking bar (51) rotational support in described sliding seat (24), and described locking bar (51) is provided with L-type tapered end (52), described L-type Tapered end (52) includes that shank of the key and kink, described shank of the key are fixed on described locking bar (51), when described locking bar (51) turns to first Position, described kink is placed in inside described slotted hole to limit the displacement of described locating shaft (33).

12. vertical governor motions as claimed in claim 11, it is characterised in that described locking bar is further fixed on block on (51) (53), described block (53) has over-hang part, when described locking bar (51) turns to the second position, the over-hang part of described block (53) Against the described dowel being adjacent, it is rotated further limiting described locking bar (51), and described kink is oval with described Hole unlocks.

The 13. vertical governor motions as described in any one of claim 1 to 12, it is characterised in that also include towing pin position restrainer Structure, including pull bar (61), spacing riser (62), spring (63) and driving lever (64), described spacing riser (62) is fixed on described seat The lower surface of plate (102), described spacing riser (62) offers the slotted hole of horizontal expansion, and described driving lever (64) is longitudinally arranged, One end is hinged with described seat board (102), and the other end is placed in outside through the slotted hole of described spacing riser (62)；Described pull bar (61) slide laterally with described seat board (102) and be connected, and the inner end of described pull bar (61) connects and is positioned at outside described slotted hole Described driving lever (64)；Described spring (63) two ends connect described pull bar (61) and described spacing riser (62) respectively.