CN111301444B - Longitudinal positioning device for piggyback vehicle - Google Patents

Abstract

The invention relates to a longitudinal positioning device for a piggyback vehicle, which comprises a base, a sliding seat, a driving part, a lifting part and a positioning part, wherein the sliding seat is arranged on the base; the driving part can drive the sliding seat to longitudinally slide relative to the base; the positioning part and the lifting part are both arranged on the sliding seat, the positioning part is matched with a positioning structure arranged on the lower end surface of the saddle of the piggyback vehicle, and the lifting part can lift the positioning part; when the positioning part is in a lifting state, the driving part can drive the sliding seat to drive the positioning part to longitudinally slide to be matched with the positioning structure, and the supporting part is pushed to longitudinally move to a preset position. The longitudinal accurate positioning can be carried out on the piggyback car, so that the underframe and the supporting part at each end part of the piggyback car respectively correspond to the arrangement positions of other loading and unloading car station equipment arranged at the platform, the smooth loading and unloading is ensured, and the loading and unloading are convenient to carry out.

Description

Longitudinal positioning device for a packback vehicle

Technical Field

The invention relates to the technical field of saddlebags, and in particular to a longitudinal positioning device for saddlebags.

Background Art

Piggyback transport refers to a convenient mode of transport in which a road vehicle such as a road truck or semi-trailer is loaded with goods and driven onto the piggyback vehicle at the departure railway station, and the goods are transported over long distances by rail. After arriving at the destination railway station, the road vehicle can drive off the piggyback vehicle and drive to the final destination.

The body of a saddlebag vehicle generally includes a main body and a supporting part detachable from the main body. When loading and unloading, the supporting part can be first rotated or translated from the main body and separated to facilitate the loading and unloading of road vehicles. After the loading and unloading is completed, the supporting part can be installed on the main body.

When the saddlebag vehicle travels to the loading and unloading yard, it needs to be accurately positioned longitudinally so that the main body and supporting parts of the saddlebag vehicle correspond to the settings of other loading and unloading yard equipment set up on the platform. Then the supporting part is separated from the main body through the loading and unloading vehicle field equipment and coordinated with the slope transition device set up on the platform to carry out loading and unloading operations. How to accurately position the saddlebag vehicle longitudinally so that the main body and supporting parts of the saddlebag vehicle correspond to the settings of other loading and unloading yard equipment set up on the platform to ensure smooth loading and unloading is a technical problem to be solved by technical personnel in this field.

Summary of the invention

The purpose of the present invention is to provide a longitudinal positioning device for a piggyback vehicle, which can accurately position the piggyback vehicle longitudinally so that the chassis and supports at each end of the piggyback vehicle correspond to the setting positions of other loading and unloading station equipment set on the platform, thereby ensuring smooth loading and unloading and facilitating loading and unloading.

In order to solve the above technical problems, the present invention provides a longitudinal positioning device for a saddlebag, which includes a base, a sliding seat, a driving part, a lifting part and a positioning part; the driving part can drive the sliding seat to slide longitudinally relative to the base; the positioning part and the lifting part are both arranged on the sliding seat, the positioning part is adapted to the positioning structure arranged on the lower end surface of the saddlebag support part, and the lifting part can lift the positioning part; when the positioning part is in a raised state, the driving part can drive the sliding seat to drive the positioning part to slide longitudinally until it cooperates with the positioning structure, and push the support part to move longitudinally to a preset position.

The longitudinal positioning device is arranged in the track of the loading and unloading yard, and the lower end surface of the supporting part is provided with a positioning structure, and the positioning structure is adapted to the limiting mechanism of the longitudinal positioning device. When the supporting part is located within the preset range after the saddlebag stops, the lifting part of the longitudinal positioning device is started to make the positioning part in a raised state. At this time, the positioning part and the positioning structure are at the same height, and then the driving part is started so that the sliding seat drives the positioning part to move longitudinally until the positioning part cooperates with the positioning structure of the lower end surface of the supporting part. Then the driving part continues to drive and pushes the supporting part to move longitudinally to the preset position through the action of the positioning part and the limiting structure. At this time, each end frame and the supporting part of the saddlebag respectively correspond to the setting positions of other loading and unloading station equipment set on the platform, and then the end frame and the supporting part can be lifted by the end frame lifting device, and the supporting part can be lifted by the supporting part lifting device to make it separate from the end frame, and then the supporting part is rotated or translated and connected with the slope transition device set on the ground, and then the loading and unloading operation can be carried out.

That is to say, when the saddlebag arrives at the loading and unloading yard and stops, the position of the support part is not necessarily at the above-mentioned preset position, but within the preset distance range of the preset position. At this time, the longitudinal positioning device can push the support part to move it longitudinally to the preset position to achieve accurate positioning of the longitudinal position of the end chassis and the support part, which is convenient for the later operation of the end chassis lifting device, the support part lifting device, etc. to ensure smooth loading and unloading. The longitudinal positioning device has a simple structure, and only needs to be acted on by the lifting part and the driving part so that the positioning part cooperates with the positioning structure of the lower end surface of the support part and pushes the support part. It has a simple structure and good stability.

Optionally, the positioning portion includes a crossbeam and a positioning block fixed to the crossbeam, and rollers capable of rolling along the lower end surface of the supporting portion are respectively provided at both ends of the crossbeam.

Optionally, the lifting part is an air spring arranged on the sliding seat.

Optionally, the sliding seat is also provided with a swinging member, which includes a hinged end and an action end, the hinged end is hinged to the sliding seat, the top end of the air spring can push the action end to swing around the hinged end, and the crossbeam is fixed to the action end.

Optionally, the swing member includes two swing rods that are parallel and spaced apart.

Optionally, the driving portion comprises a hydraulic cylinder hinged to the base, and an end of a piston rod of the hydraulic cylinder is hinged to the positioning portion.

Optionally, it further includes a limiting portion provided on the sliding seat, for limiting the lifting height of the action end.

Optionally, the limiting portion includes a first connecting rod and a second connecting rod which are hinged to each other, an end of the first connecting rod is hinged to the sliding seat, and an end of the second connecting rod is hinged to the positioning portion, and when the lifting portion lifts the positioning portion, the first connecting rod can be driven to unfold or fold relative to the second connecting rod through the action end.

Optionally, the limiting portion further includes a limiting structure provided on the first connecting rod and/or the second connecting rod to limit the maximum angle between the first connecting rod and the second connecting rod.

Optionally, the base is provided with a slideway in the longitudinal direction, and the sliding seat is provided with a sliding block capable of sliding along the slideway.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of a longitudinal positioning device provided by an embodiment of the present invention at the highest position;

Fig. 2 is a front view of Fig. 1;

FIG3 is a schematic diagram of the structure of the longitudinal positioning device in the lowest position;

FIG4 is a front view of FIG3;

FIG5 is a schematic structural diagram of a base;

FIG6 is a schematic diagram of the structure of the sliding seat;

FIG. 7 is a schematic diagram of a partial structure of a longitudinal positioning device.

In the accompanying drawings 1-7, the description of the accompanying drawings is as follows:

91-base, 911-slide;

92-sliding seat, 921-first hinge seat, 922-sliding block;

93- hydraulic cylinder, 931- piston rod;

94-lifting part;

95-positioning part, 951-crossbeam, 9511-second hinge seat, 952-positioning block, 953-roller, 954-abutment plate;

96-swing bar;

97-limiting part, 971-first connecting rod, 972-second connecting rod.

DETAILED DESCRIPTION

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

Please refer to Figures 1-7, Figure 1 is a structural schematic diagram of the longitudinal positioning device provided in an embodiment of the present invention at the highest position; Figure 2 is a front view of Figure 1; Figure 3 is a structural schematic diagram of the longitudinal positioning device at the lowest position; Figure 4 is a front view of Figure 3; Figure 5 is a structural schematic diagram of the base; Figure 6 is a structural schematic diagram of the sliding seat; Figure 7 is a partial structural schematic diagram of the longitudinal positioning device.

An embodiment of the present invention provides a longitudinal positioning device for a saddlebag, as shown in Figures 1-4, the longitudinal positioning device includes a base 91, a sliding seat 92, a lifting part 94, a driving part and a positioning part 95, wherein the driving part can drive the sliding seat 92 to slide longitudinally relative to the base 91, the lifting part 94 and the positioning part 95 are both arranged on the sliding seat 92, the lifting part 94 can lift and lower the positioning part 95, the positioning part 95 is adapted to the positioning structure arranged on the lower end surface of the supporting part of the saddlebag, when the positioning part 95 is acted on by the lifting part 94 to be in a raised state, the driving part can drive the sliding seat 92 to slide longitudinally relative to the base 91, and drive the positioning part 95 arranged on the sliding seat 92 to slide longitudinally until it cooperates with the positioning structure arranged on the lower end surface of the supporting part, and then the driving part continues to drive, and can push the supporting part through the coordinated action of the positioning part 95 and the positioning structure, so that it moves longitudinally to a preset position.

Among them, longitudinal refers to the length direction of the saddlebag vehicle. The longitudinal positioning device can drive the vehicle to a preset position, so that the main body and the supporting part correspond to the setting positions of other loading and unloading station equipment (including end frame lifting device, supporting part lifting device, slope transition device, etc.) set on the platform, to ensure smooth loading and unloading.

Specifically, the longitudinal positioning device is arranged in the track of the loading and unloading yard, and the lower end surface of the support part is provided with a positioning structure, and the positioning structure is adapted to the limiting mechanism of the longitudinal positioning device provided in this embodiment. When the support part is located within the preset range after the saddlebag stops, the lifting part 94 of the longitudinal positioning device is started to make the positioning part 95 in a raised state. At this time, the positioning part 95 and the positioning structure are at the same height, and then the driving part is started so that the sliding seat 92 drives the positioning part 95 to move longitudinally until the positioning part 95 cooperates with the positioning structure of the lower end surface of the support part, and then the driving part continues to drive and pushes the support part to move longitudinally to the preset position through the action of the positioning part 95 and the limiting structure. At this time, each end frame and support part of the saddlebag respectively corresponds to the setting position of other loading and unloading station equipment, and then the end frame lifting device can be used to lift the end frame and the support part, and then the support part can be lifted by the support part lifting device to separate it from the end frame, and then the support part is rotated or translated and connected to the slope transition device before loading and unloading operations can be carried out.

That is to say, when the saddlebag arrives at the loading and unloading yard and stops, the position of the support part is not necessarily at the above-mentioned preset position, but within the preset distance range of the preset position. At this time, the longitudinal positioning device provided by this embodiment can push the support part to move it longitudinally to the preset position to achieve accurate positioning of the longitudinal position of the end chassis and the support part, which is convenient for the later operation of the end chassis lifting device, the support part lifting device, etc. The longitudinal positioning device has a simple structure, and only needs to be acted on by the lifting part 94 and the driving part so that the positioning part 95 cooperates with the positioning structure of the lower end surface of the support part and pushes the support part. It has a simple structure and good stability.

The preset range refers to a range within a certain distance from the preset position. The longitudinal positioning device is fixed to the rail surface. When the position where the support part stops is within the preset range, it can be longitudinally positioned by the longitudinal positioning device. If it exceeds the preset range, it exceeds the action stroke of the longitudinal positioning device and the support part cannot reach the preset position. Specifically, when the stop position of the end chassis and the support part is within the preset range, it may be in front of the preset position or in the rear of the preset position. Therefore, for the same loading and unloading yard, the longitudinal positions of the end chassis and the support parts of the piggyback vehicle can be adjusted to the preset position by setting one or more groups of two longitudinal positioning devices arranged opposite to each other in the longitudinal direction, which has better flexibility.

In the above embodiment, the positioning portion 95 includes a crossbeam 951 and a positioning block 952 fixed to the crossbeam 951. Both ends of the crossbeam 951 are respectively provided with rollers 953 that can roll along the lower end surface of the support portion. When the vehicle stops within a preset range, the positioning portion 95 is disengaged from the positioning structure. Then, the lifting portion 94 acts on the positioning portion 95 to make its height consistent with the height of the positioning structure. Then, the driving portion drives the sliding seat 92 to drive the positioning portion 95 to slide to cooperate with the positioning structure. In the process, the positioning portion 95 is in a sliding state relative to the support portion. The setting of the roller 953 can reduce the sliding friction between the positioning portion 95 and the lower end surface of the support portion during this process, thereby reducing friction and wear and extending the service life.

There is no specific limitation on the setting of the positioning block 952 and the positioning structure. As shown in FIG7 , in this embodiment, the positioning portion 95 is a triangular positioning block 952. Accordingly, the positioning structure can be set as a V-shaped notch or a recess of a transverse bracket located on the support portion, or the positioning block 952 can be set as a square block or a circular block.

In the above embodiment, the lifting part 94 is an air spring arranged on the sliding seat 92. Due to the effect of the bogie spring, when the support part is in an unloaded state, its height is the highest, and when the support part is loaded with a road vehicle, its height is lower than the height when it is unloaded. Therefore, when the lifting part 94 is set as an air spring, its height after inflation has elastic adjustment. Compared with the rigid height-raising device, it can adapt to different height requirements of the support part in different states and has better applicability. Specifically, the lower end of the positioning part 95 (crossbeam 951) can also be provided with an abutment plate 954 for abutting against the air spring to increase the action area between the two and improve stability.

Furthermore, the sliding seat 92 is also provided with a swinging member, which includes a hinged end and an action end, wherein the hinged end is hinged to the sliding seat 92, and the top end of the air spring can push the action end to make it swing around the hinged end, and the above-mentioned crossbeam 951 is fixedly arranged at the action end. In other words, after the air spring is inflated, it can push the action end upward to make it rotate around the hinged end, and when the air spring is exhausted, the action end will rotate around the hinged end and drop to the lowest position (as shown in Figures 3 and 4). The setting of the swinging member can ensure the stability of the positioning part 95 while simplifying the overall structure.

Furthermore, the swing member includes two parallel and spaced apart swing rods 96, or, in this embodiment, the swing member can also be configured as a whole plate-like structure, one side of the plate-like structure is hinged to the sliding seat 92, and the other side is fixed to the crossbeam 951. The solution of two swing rods 96 can simplify the overall structure and reduce the weight.

In the above embodiment, the driving part includes a hydraulic cylinder 93 hinged to the base 91, and the end of the piston rod 931 of the hydraulic cylinder 93 is hinged to the positioning part 95. The piston rod 931 of the hydraulic cylinder 93 pushes and pulls the positioning part 95 so that the sliding seat 92 and the positioning part 95 slide longitudinally as a whole. Alternatively, in this embodiment, the piston rod 931 of the hydraulic rod can also act on the sliding seat 92, that is, directly push and pull the sliding seat 92 to drive the positioning part 95 to slide longitudinally. When the piston rod 931 of the hydraulic cylinder 93 is hinged to the positioning part 95, when the piston rod 931 is in a retracted state, part of the hydraulic cylinder 93 is located above the sliding part (between the two rocker arms 96), which can reduce the distance between the end of the sliding seat 92 and the end of the base 91, thereby reducing the overall volume of the longitudinal positioning device.

Alternatively, in this embodiment, the driving part can also be set to a structure including a motor, a gear and a rack, or it can be set to a structure including a motor, a screw and a nut. In this case, the driving part can be fixed to the base 91 and directly act on the sliding seat 92 to make it slide longitudinally relative to the base 91. When the driving part is set to a hydraulic cylinder 93, the overall structure can be simplified and the stability can be better.

In the above embodiment, the longitudinal positioning device also includes a limiting portion 97, which is used to limit the lifting height of the action end, so that when the action end rises to the highest position (as shown in Figures 1 and 2), the positioning portion 95 can cooperate with the positioning structure of the support portion in a no-load state. With this arrangement, when the air spring is inflated to push the positioning portion 95 upward, the damage of the inflation spring due to excessive inflation pressure can be avoided, thereby providing inflation protection for the air spring.

Specifically, the limiting part 97 includes a first connecting rod 971 and a second connecting rod 972 which are hinged to each other, wherein, as shown in FIG6 and FIG7 , the sliding seat 92 is provided with a first hinge seat 921, the positioning part 95 (crossbeam 951) is provided with a second hinge seat 9511, the end of the first connecting rod 971 is hinged to the first hinge seat 921, the end of the second connecting rod 972 is hinged to the second hinge seat 9511, and the lifting part 94 can drive the second connecting rod 972 to unfold or fold relative to the first connecting rod 971 through the action end when lifting and lowering the positioning part 95. That is to say, when the lifting and lowering part 94 lifts and lowers the positioning part 95, the angle between the two connecting rods (the first connecting rod 971 and the second connecting rod 972) changes, and when the angle between the two is expanded to the maximum, the air spring can be limited. Alternatively, in this embodiment, the limiting part 97 can also be set as a chain or a pull rope, and the air spring can be limited when the chain or the pull rope is in a straightened state. When the limiting portion 97 is configured as two connecting rods that are hinged to each other and foldable, after the air spring is exhausted, the two connecting rods are in a folded state, at which time the heights of the two connecting rods are relatively low and will not hinder the descent of the positioning portion 95.

Furthermore, the limiting portion 97 further includes a limiting structure provided on the first connecting rod 971 and/or the second connecting rod 972, and the limiting structure can limit the maximum angle of rotation between the first connecting rod 971 and the second connecting rod 972 to be less than 180°. Such a setting can avoid the formation of a dead point after the angle between the two connecting rods reaches 180°, which affects the descent of the positioning portion 95. Specifically, one of the first connecting rod 971 and the second connecting rod 972 may be provided with a limiting structure, and when the two are rotated to the maximum angle, the limiting structure can abut against the other connecting rod to limit its continued rotation, or it may also include limiting structures respectively provided on the two connecting rods and adapted to each other, and when the angle between the two reaches the maximum, it can limit the continued rotation.

In the above embodiment, as shown in FIG5 , the base 91 is provided with a slideway 911 in the longitudinal direction, and the sliding seat 92 is provided with a slider 922 that can slide along the slideway 911. Specifically, as shown in FIG6 and FIG7 , in this embodiment, the slideway 911 is a slide groove provided on the base 91, and the edge of the sliding seat 92 is provided with a slider 922 that is located in the slide groove and can slide along the slide groove. Alternatively, the slide groove can also be provided on the upper end surface of the base 91, and the lower end surface of the sliding seat 92 is provided with a slider 922 that can slide along the slide groove. Of course, in this embodiment, the slideway 911 can also be provided as a strip hole or a slide rail provided in the longitudinal direction, and no specific limitation is made here.

Of course, in this embodiment, the slideway 911 can also be provided on the sliding seat 92, and the base 91 can slide along the slideway 911. Since the base 91 is fixed on the rail surface, the sliding seat 92 can slide relative to the base 91. When the slideway 911 is provided on the base 91, the sliding continuity of the sliding seat 92 can be ensured to be good.

In addition, in this embodiment, the hinged connections between the above-mentioned components can be connected by pins or round pins, and the pins or round pins are limited by washers and cotter pins.

The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims (9)

1. A longitudinal positioning device for a saddlebag vehicle, characterized in that it comprises a base (91), a sliding seat (92), a driving part, a lifting part (94) and a positioning part (95); The driving unit is capable of driving the sliding seat (92) to slide longitudinally relative to the base (91), and the base (91) is fixed to the rail surface; The positioning portion (95) and the lifting portion (94) are both arranged on the sliding seat (92), the positioning portion (95) is matched with a positioning structure arranged on the lower end surface of the supporting portion of the saddlebag, and the lifting portion (94) can lift and lower the positioning portion (95); When the positioning portion (95) is in a raised state, the driving portion is capable of driving the sliding seat (92) to drive the positioning portion (95) to slide longitudinally until it cooperates with the positioning structure, and to push the supporting portion to move longitudinally to a preset position; The lifting part (94) is an air spring arranged on the sliding seat (92). 2. The longitudinal positioning device for a saddlebag vehicle according to claim 1, characterized in that the positioning portion (95) comprises a crossbeam (951) and a positioning block (952) fixed to the crossbeam (951), and rollers (953) capable of rolling along the lower end surface of the supporting portion are respectively provided at both ends of the crossbeam (951). 3. The longitudinal positioning device for a saddlebag vehicle according to claim 2 is characterized in that the sliding seat (92) is also provided with a swinging member, the swinging member includes a hinged end and an action end, the hinged end is hinged to the sliding seat (92), the top end of the air spring can push the action end to swing around the hinged end, and the cross beam (951) is fixed to the action end. 4. The longitudinal positioning device for a saddlebag vehicle according to claim 3, characterized in that the swing member comprises two parallel and spaced apart swing rods (96). 5. The longitudinal positioning device for a saddlebag vehicle according to claim 3, characterized in that the driving portion comprises a hydraulic cylinder (93) hinged to the base (91), and an end of a piston rod (931) of the hydraulic cylinder (93) is hinged to the positioning portion (95). 6. The longitudinal positioning device for a saddleback vehicle according to any one of claims 3 to 5, characterized in that it also includes a limiting portion (97) provided on the sliding seat (92) for limiting the lifting height of the action end. 7. The longitudinal positioning device for a saddlebag vehicle according to claim 6 is characterized in that the limiting portion (97) includes a first connecting rod (971) and a second connecting rod (972) which are hinged to each other, an end of the first connecting rod (971) is hinged to the sliding seat (92), and an end of the second connecting rod (972) is hinged to the positioning portion (95), and when the lifting portion (94) lifts the positioning portion (95), it can drive the first connecting rod (971) to expand or fold relative to the second connecting rod (972) through the action end. 8. The longitudinal positioning device for a saddlebag vehicle according to claim 7, characterized in that the limiting portion (97) further includes a limiting structure provided on the first connecting rod (971) and/or the second connecting rod (972) to limit the maximum angle between the first connecting rod (971) and the second connecting rod (972). 9. The longitudinal positioning device for a saddleback vehicle according to any one of claims 1 to 5, characterized in that the base (91) is provided with a slideway (911) along the longitudinal direction, and the sliding seat (92) is provided with a sliding block (922) capable of sliding along the slideway (911).