CN112208641B

CN112208641B - Support framework for transportation semitrailer

Info

Publication number: CN112208641B
Application number: CN202011151735.6A
Authority: CN
Inventors: 张玉路; 王春胜
Original assignee: Sichuan Hongtai Panda Special Vehicle Manufacturing Co ltd
Current assignee: Sichuan Hongtai Panda Special Vehicle Manufacturing Co ltd
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2021-09-24
Anticipated expiration: 2040-10-26
Also published as: CN112208641A

Abstract

The invention discloses a supporting framework for a transport semitrailer, which relates to the technical field of transport semitrailers and mainly comprises two longitudinal beams and a plurality of cross beams fixedly arranged between the two longitudinal beams, wherein each longitudinal beam is provided with at least two groups of sliding assemblies, each sliding assembly comprises a sliding seat, a sliding block and a lead screw, the sliding seat is fixedly arranged on the longitudinal beam, a sliding hole is processed on the upper surface of the sliding seat, the sliding block is movably matched with the sliding hole, the lead screw is arranged on the sliding seat, the lead screw is connected with the sliding block in a threaded manner, and the lead screw is rotated to enable the sliding block to slide; and each sliding block is provided with a positioning block, and the positioning blocks are provided with connecting mechanisms for connecting assembling holes on an external platform. The sliding assemblies are arranged at the corresponding connecting positions on the two sides of the longitudinal beam, the assembling operation of different external platform forms is dealt with in a sliding adjusting mode, and the device has the advantages of being simple and convenient to adjust and high in continuity.

Description

Support framework for transportation semitrailer

Technical Field

The invention relates to the technical field of transport semitrailers, in particular to a support framework for a transport semitrailer.

Background

The support framework of the transport semitrailer is mainly used for connecting external platforms, such as supporting platforms such as supporting flat plates and supporting boxes, or containing platforms such as containing frames and containing racks. Once the form of the external platform needs to be replaced, the positions of the assembly holes of various types of external platforms are different, which requires that a plurality of sets of connecting pieces, such as connecting bolts or connecting bolts, are designed at each corresponding connecting position on the supporting framework, and most of the existing transportation semi-trailers adopt the form of designing a plurality of sets of connecting pieces at each connecting position, which has certain defects, such as inconvenient adjustment, poor adjustment continuity and the like.

In view of this, the present application is specifically made.

Disclosure of Invention

The invention aims to provide a support framework for a transport semitrailer, which is provided with sliding components at corresponding connecting positions on two sides of a longitudinal beam of the support framework, can be used for assembling operations of different external platform forms in a sliding adjustment mode, and has the advantages of simplicity and convenience in adjustment and high continuity.

The embodiment of the invention is realized by the following steps: a support framework for a transport semitrailer comprises two longitudinal beams and a plurality of cross beams fixedly arranged between the two longitudinal beams, wherein each longitudinal beam is provided with at least two groups of sliding assemblies, each sliding assembly comprises a sliding seat, a sliding block and a screw rod, the sliding seat is fixedly arranged on the longitudinal beam, a sliding hole is formed in the upper surface of the sliding seat, the sliding block is movably matched with the sliding hole, the screw rod is arranged on the sliding seat, the screw rod is connected with the sliding block in a threaded manner, and the screw rod is rotated to enable the sliding block to slide along the sliding hole; and each sliding block is provided with a positioning block, and the positioning blocks are provided with connecting mechanisms for connecting assembling holes on an external platform.

Further, at least two groups of sliding assemblies on each longitudinal beam are arranged on one side, far away from the transverse beam, of each longitudinal beam side by side.

Further, the slide includes pedestal and the limiting plate of shaping at pedestal both sides lower surface, and the slide opening arranges in the pedestal, and the length direction of slide opening is unanimous with the length direction of longeron, slider upper end and locating piece connection, and the slider lower extreme is located between two limiting plates, and the lower extreme of two limiting plates and slider is rotationally passed to lead screw one end, and the both sides that the lead screw passed the limiting plate all are provided with the spacing ring.

Furthermore, the connecting mechanism comprises a driving plate, an outer sleeve and a tensioning sleeve, a vertical through hole is processed in the positioning block, the outer sleeve rotatably penetrates through the vertical through hole, an end face bearing is installed at the lower port of the outer sleeve, one side end face of the driving plate is connected with the end face bearing, a damping pad is arranged between the outer edge of the driving plate and the inner hole wall of the outer sleeve, one end, away from the end face bearing, of the driving plate is provided with a plurality of driving rods, the tensioning sleeve is sleeved on the outer sleeve, a plurality of groups of tensioning assemblies are arranged between the outer ring wall of the outer sleeve and the inner hole wall of the tensioning sleeve, and the tensioning assemblies can be tensioned in the tensioning sleeve along with the rotation of the outer sleeve.

Furthermore, the tightening assembly comprises a first connecting rod, a second connecting rod and a supporting plate, a first lantern ring and a second lantern ring are sleeved on the outer sleeve, the first lantern ring is in threaded connection with the outer sleeve, the second lantern ring is rotatably connected with the outer sleeve, the middle parts of the first connecting rod and the second connecting rod are hinged with each other, two ends of the first connecting rod are respectively hinged with one end of the supporting plate and the first lantern ring through pin type hinged supports, two ends of the second connecting rod are respectively hinged with the other end of the supporting plate and the second lantern ring through pin type hinged supports, and the pin type hinged supports between the first connecting rod and the first lantern ring and the hinged holes in the pin type hinged supports between the second connecting rod and the supporting plate are strip-shaped holes; the locating piece is processed on being close to the lateral wall of tensioning cover and is had T type spout, and T type spout is arranged along tensioning cover's radial, fagging one end be provided with T type spout sliding fit's sliding part.

Further, processing has the regulation screw on the driver plate, the axis of adjusting the screw coincides with the axis of outer sleeve, it has the inner skleeve to adjust screw thread fit, inner skleeve one end penetrates in the hole of outer sleeve and the shaping has the spacing head, the one end port department that end face bearing was kept away from to the outer sleeve is provided with a plurality of buckle pieces, a plurality of buckle pieces are around the rotatory symmetric distribution of axis of outer sleeve, buckle piece one end is articulated in the hole of outer sleeve through the bull pin, and the one end that the spacing head was kept away from to the buckle piece can rotate towards one side of keeping away from the outer sleeve axis, the one end shaping that the spacing head was kept away from to the buckle piece has the joint portion of protractile to the outer sleeve, through the removal of inner skleeve, spacing head and buckle piece one end effect, the joint portion that can make this buckle piece rotates towards the one side of keeping away from the outer sleeve axis.

Furthermore, the side face, far away from the central axis of the outer sleeve, of the clamping portion is an inclined face, and one end, far away from the limiting head, of the inclined face inclines towards one side, close to the central axis of the outer sleeve.

Furthermore, one side of the limiting headrest close to the buckling block is processed with a limiting sunk groove in a frustum shape, the expanding end of the limiting sunk groove is close to the buckling block, the limiting head and the lower end of the buckling block act through the movement of the inner sleeve, and the limiting sunk groove can enable the lower end of the buckling block to rotate towards one side close to the central axis of the outer sleeve.

Furthermore, the spiro union has the core bar in the hole of inner skleeve, and core bar one end penetrates to spacing heavy inslot and the shaping has the pusher, rotates the core bar, and the pusher acts on with buckle piece one end, can make the joint portion of this buckle piece rotate towards the one side that is close to the outer skleeve axis.

Furthermore, the pushing head is in a frustum shape, and the reducing end of the pushing head is close to the buckling block.

The embodiment of the invention has the beneficial effects that:

according to the support framework provided by the embodiment of the invention, the plurality of groups of sliding assemblies are arranged on the two sides of the longitudinal beam, the position of the connecting mechanism is changed in a sliding adjustment mode, the purpose of continuous movement of the connecting mechanism can be realized only by driving the screw rod to rotate, and the mode can ensure that the position of the connecting mechanism is changed to achieve the advantages of convenience in adjustment and high continuity.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural diagram of a support frame according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a connection mechanism according to an embodiment of the present invention;

FIG. 3 is an enlarged schematic view of FIG. 2 at A;

fig. 4 is an enlarged schematic view of fig. 2 at B.

Icon: 1-a longitudinal beam; 2-a cross beam; 3-a slide seat; 4-a slide block; 5-a screw rod; 6-a slide hole; 7-positioning blocks; 8-a connection mechanism; 701-vertical through holes; 801-a driving lever; 802-dial; 803-outer sleeve; 804-end face bearing; 805-core bar; 806-inner sleeve; 807-a supporting plate; 808-a second pinned joint; 809-first pin hinge base; 810-a first link; 811-a second link; 812-a first collar; 813-a second collar; 814-a tension sleeve; 815-pushing head; 816-a limiting head; 817-limit sink; 818-a snap-fit block; 819-a snap-in part; 820-inclined plane; 821-T type chute.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "parallel," "perpendicular," and the like do not require that the components be absolutely parallel or perpendicular, but may be slightly inclined. For example, "parallel" merely means that the directions are more parallel relative to "perpendicular," and does not mean that the structures are necessarily perfectly parallel, but may be slightly tilted.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

Referring to fig. 1, the support frame for a transportation semitrailer provided in this embodiment includes two longitudinal beams 1 and a plurality of cross beams 2 fixedly disposed between the two longitudinal beams 1, the whole combination of the longitudinal beams 1 and the cross beams 2 forms a main body portion of the support frame, at least two sets of sliding assemblies are disposed on each longitudinal beam 1, preferably, the at least two sets of sliding assemblies on each longitudinal beam 1 are disposed side by side on one side of the longitudinal beam 1 away from the cross beam 2, so as to ensure high symmetry and easy workability at a connection position corresponding to an external platform. The single-group sliding assembly is taken as an example for expansion and explanation, the sliding assembly comprises a sliding seat 3, a sliding block 4 and a screw rod 5, the sliding seat 3 is fixed on one side of the longitudinal beam 1, in this embodiment, the sliding seat 3 comprises a seat body arranged horizontally and limiting plates formed on the lower surfaces of the two sides of the seat body, a sliding hole 6 is processed on the upper surface of the seat body, the length direction of the sliding hole 6 is consistent with that of the longitudinal beam 1, and the sliding hole 6 is in a through hole form, namely the sliding hole 6 penetrates through the upper surface and the lower surface of the seat body. Slider 4 clearance fit is in slide 6, and lead screw 5 sets up on slide 3, and lead screw 5 and 4 silks of slider connect, rotates this lead screw 5, can make slider 4 slide along slide 6, specifically, 4 lower extremes of slider are located between two limiting plates, 5 one end of lead screw rotationally passes two limiting plates and slider 4's lower extreme, and the perforation department silk that lead screw 5 and slider 4 correspond connects, and the perforation department rotatable fit that lead screw 5 and limiting plate correspond can. The two sides of the screw rod 5 penetrating through the at least one limiting plate are provided with limiting rings, so that the screw rod 5 can rotate relative to the sliding seat 3 and cannot move axially.

The upper end of each sliding block 4 is provided with a positioning block 7, the positioning blocks 7 and the sliding blocks 4 can be connected in a welding mode, a screw joint mode, a riveting mode or a fusion welding mode, and the like, and each positioning block 7 is provided with a connecting mechanism 8 used for being connected with an assembling hole in an external platform. Wherein, coupling mechanism 8 can be forms such as simple bolt, inserted column, also can be forms such as quick plug-in components, quick fastener or quick latch fitting, only need satisfy under the stable prerequisite of connection, the purpose that can convenient dismouting can. Through adjusting screw 5, can change the relative position that slider 4 is located slide opening 6 to reach the purpose that changes coupling mechanism 8 position, finally realize connecting the outside platform assembly operation of different grade type, the outside platform of different grade type here mainly means that the form of outside platform changes the back, and the pilot hole position of its bottom also changes relatively. Of course, the change of the longitudinal position of the assembly hole is mainly adapted to the situation, for example, the corresponding transverse position is changed, the relative position between the positioning block 7 and the sliding block 4 should be changed to adapt to the situation, for example, the positioning block 7 and the sliding block 4 are in threaded connection or telescopic connection, and the purpose of adjusting the relative transverse distance between the positioning block 7 and the sliding block 4 can be achieved.

In order to improve the convenience of assembling and disassembling the connection mechanism 8, the inventor of the present application has made an innovative design for the connection mechanism 8 compared to the conventional connection pieces such as bolts and pins, please refer to fig. 2 to 4, where the connection mechanism 8 includes a dial 802, an outer sleeve 803 and a tension sleeve 814, a vertical through hole 701 is processed on the positioning block 7, the outer sleeve 803 rotatably passes through the vertical through hole 701 through a bearing, an end face bearing 804 is installed at a lower port of the outer sleeve 803, an end face of one side of the dial 802 is connected with the end face bearing 804, the connection mode may be screwing, riveting or welding, etc., a damping pad is disposed between an outer edge of the dial 802 and an inner hole wall of the outer sleeve 803, where an outer edge of the dial 802 may be an outer ring wall of the dial 802, or an end wall of the dial 802 near the outer ring wall, preferably the latter. And an end cap is provided at the lower port of the outer sleeve 803 for preventing the dial 802 and the face bearing 804 from coming off the outer sleeve 803, and a damping pad is provided between the end cap and the end wall of the dial 802. The dial 802 is able to rotate relative to the outer sleeve 803 after overcoming the frictional resistance of the damping pads.

One end of the dial plate 802, which is far away from the end face bearing 804, extends out of the outer sleeve 803, the extending part is provided with a plurality of shift levers 801, the shift levers 801 are uniformly arranged around the circumference of the extending part, and the shift levers 801 are slightly rotated manually, so that the outer sleeve 803 and the dial plate 802 can be driven to synchronously rotate under the frictional resistance of the damping pad. The tensioning sleeve 814 is made of rubber material, the tensioning sleeve 814 is sleeved on the outer sleeve 803, and one side end face of the tensioning sleeve 814 is supported on the upper surface of the positioning block 7. A plurality of groups of tightening components are arranged between the outer ring walls of the outer sleeve 803 and the inner hole wall of the tensioning sleeve 814, each group of tightening components can be tightly tightened in the tensioning sleeve 814 along with the rotation of the outer sleeve 803, so that the tensioning sleeve 814 can be tightened in the assembly hole corresponding to the external platform, the tensioning mode is that the tensioning sleeve 814 is expanded or deformed to a certain degree, the purpose of stable connection with the hole wall of the corresponding assembly hole is realized, and compared with the traditional bolt or bolt connection mode, the fault tolerance is higher; because when assembling external platform before, hoist and mount external platform on supporting framework, need behind the very accurate alignment bolt of pilot hole and bolt, just can carry out further assembly operation, the precision requirement of whole assembly process is higher, is very difficult to operate and examines operator's proficiency. And after the connecting piece of this application is adopted, the mounting hole of the outside platform that only needs to hoist roughly aims at tensioning sleeve 814 and can carry out further locking operation after cartridge smoothly, and whole assembling process has improved convenient degree to the requirement greatly reduced of precision and operation proficiency.

The bracing piece can be in the form of a telescopic rod matched with a sensor, when the sensor detects that the outer sleeve 803 rotates, the telescopic rod extends, a pressing plate is fixed at the end part of the telescopic rod, and the pressing plate can brace the tensioning sleeve 814; the tightening piece can also be in the form of a nut sleeve, the nut sleeve is screwed on the outer sleeve 803, the pressing plate capable of sliding along the radial direction of the outer sleeve 803 is arranged on the periphery of the nut sleeve, the nut sleeve is in oblique fit with the pressing plate, and when the nut sleeve moves, the pressing plate can slide through the oblique surface engagement effect, so that the purpose of tightening the tensioning sleeve 814 is achieved. In this embodiment, the tightening assembly includes a first connecting rod 810, a second connecting rod 811 and a supporting plate 807, the outer sleeve 803 is sleeved with a first collar 812 and a second collar 813, the first collar 812 is in a form of a screw sleeve and is screwed with the outer sleeve 803, the second collar 813 is rotatably connected with the outer sleeve 803 through a bearing, the middle portions of the first connecting rod 810 and the second connecting rod 811 are hinged to each other, and both ends of the first connecting rod 810 are respectively hinged with one end of the supporting plate 807 and the first collar 812 through a pin hinge seat, which is a pin hole machined on a common seat body, and a rotating pin is rotatably fitted in the pin hole. Similarly, the second link 811 is hinged at both ends thereof to the other end of the stay plate 807 and the second collar 813 by a pin hinge.

It should be noted that the hinge holes (pin holes) on the pin hinge between the first connecting rod 810 and the first collar 812 and the pin hinge between the second connecting rod 811 and the supporting plate 807 are strip holes, which means that the pin hinge here is divided into two types, i.e. the first pin hinge 809 and the second pin hinge 808, the hinge hole on the second pin hinge 808 is a circular hole, the hinge hole on the first pin hinge 809 is a strip hole, and the rotating pin can move in the strip hole, so that the smooth radial movement of the supporting plate 807 relative to the tensioning sleeve 814 can be ensured. In addition, in the same fastener, two first pin sockets 809 are located in the same radial direction (of the tensioning sleeve 814) and two second pin sockets 808 are located in the same radial direction (of the tensioning sleeve 814), so that when the first sleeve 812 rotates relative to the outer sleeve 803, the included angle between the first link 810 and the second link 811 in the bracket can be changed, thereby achieving the purpose of radial movement of the bracing plate 807. Certainly, in order to smoothly enable the supporting plate 807 to move radially, a certain limit needs to be performed on the supporting plate 807, specifically, a T-shaped sliding groove 821 is processed on a side wall of the positioning block 7 close to the tensioning sleeve 814, the T-shaped sliding groove 821 is arranged along the radial direction of the tensioning sleeve 814, one end of the supporting plate 807 is provided with a sliding part in sliding fit with the T-shaped sliding groove 821, the sliding part is designed to limit the supporting plate 807 to a moving range which can only move radially, so that when the outer sleeve 803 rotates, the second sleeve ring 813 cannot move axially relative to the outer sleeve 803, and at this time, the first sleeve 812 can move axially relative to the outer sleeve 803 under the effect of thread connection, so that the supporting plate 807 can smoothly slide radially along the direction of the T-shaped sliding groove 821.

The tensioning sleeve 814 is tensioned between the outer sleeve 803 and the wall of the assembly hole by the rigidity of all the bracing members, so that the movement of the external platform in the radial direction and the movement in the axial direction to a certain extent relative to the outer sleeve 803 can be limited, and the purpose of relatively stably connecting the external platform can be achieved. In order to further increase the stability of being connected between the two, processing has axial regulation screw hole on the dial plate 802, the axis of adjusting the screw hole coincides with the axis of outer sleeve 803, it has inner sleeve 806 to adjust screw thread fit, inner sleeve 806 one end is penetrated to the hole of outer sleeve 803 in and is formed spacing head 816, and one side that spacing head 816 keeps away from inner sleeve 806 axis is through laminating with the groove that corresponds on the outer sleeve 803 inner wall, makes spacing head 816 only can follow inner sleeve 806 axial displacement. A plurality of buckling blocks 818 are arranged at one end port of the outer sleeve 803 far away from the end face bearing 4, the plurality of buckling blocks 818 are rotationally and symmetrically distributed around the central axis of the outer sleeve 803, and the buckling blocks 818 are used for buckling the top end wall of the assembling hole, so that the movement of the external platform relative to the outer sleeve 803 in the axial direction is limited. Specifically, taking a single snap-in block 818 as an example for explanation, one end of the snap-in block 818 is hinged in the inner hole of the outer sleeve 803 through a rotating pin, and one end of the snap-in block 818 away from the limiting head 816 can rotate towards the side away from the central axis of the outer sleeve 803, so as to have a condition capable of clamping the hole wall at the upper end of the assembly hole.

In this embodiment, the clamping portion 819 that can extend to the outer sleeve 803 is formed at the end of the clamping block 818 away from the limiting head 816, the side of the clamping portion 819 away from the central axis of the outer sleeve 803 is an inclined surface 820, one end of the inclined surface 820 away from the limiting head 816 inclines toward the side close to the central axis of the outer sleeve 803, when the lower port of the assembling hole contacts the inclined surface 820 of the clamping portion 819, through the effect of the inclined surface cut-and-shut, all the clamping blocks 818 can be gathered toward the central axis of the outer sleeve 803, and therefore the purpose that the assembling hole is sleeved on the outer sleeve 803 is smoothly achieved. The assembly hole is in the form of a through hole, can be a straight hole, and can also be in the form of a secondary step hole (with a small upper part and a large lower part), wherein the latter is adopted. The inner sleeve 806 is driven to move, the limiting head 816 acts on one end of the snap-in block 818, the clamping portion 819 of the snap-in block 818 can rotate towards one side far away from the central axis of the outer sleeve 803, and the purpose that the clamping portion 819 and the upper end wall of the assembly hole are pressed tightly is achieved. Specifically, a frustum-shaped limiting sunk groove 817 is processed on one side of the limiting head 816 close to the buckling block 818, the diameter expansion end of the limiting sunk groove 817 is close to the buckling block 818 to drive the inner sleeve 806 to move, the limiting head 816 acts on the lower end of the buckling block 818 to enable the side groove wall of the limiting sunk groove 817 to act on one side of the lower end of the buckling block 818 far away from the central axis of the outer sleeve 803, the lower end of the buckling block 818 can rotate towards one side close to the central axis of the outer sleeve 803, and finally the purpose of mutually and stably compressing all the buckling parts 819 and the upper end wall of the assembly hole is achieved.

In order to facilitate the easy separation of the clamping portions 819 from the upper end wall of the assembly hole during the disassembly, a core bar 805 is screwed in the inner hole of the inner sleeve 806, one end of the core bar 805 penetrates into the limiting sunk groove 817 and is formed with a push head 815, the core bar 805 is rotated, the push head 815 acts on one end of the snap-in block 818, the clamping portion 819 of the snap-in block 818 can be rotated towards one side close to the central axis of the outer sleeve 803, specifically, the push head 815 is in a frustum shape, the reduced-diameter end of the push head 815 is close to the snap-in block 818, the reduced-diameter end of the push head 815 acts on one side of the snap-in block 818 close to the central axis of the outer sleeve 803, the lower end of the snap-in block 818 can be rotated towards one side far away from the central axis of the outer sleeve 803, so that all the clamping portions 819 are folded and can be smoothly separated from the assembly hole.

The whole connecting mechanism 8 works as follows: the tensioning sleeve 814 is not tightly supported in the initial state, the clamping portion 819 is in a gathering state, the external bottle body is hoisted to the supporting framework 1, the corresponding assembly holes are aligned with all the connecting mechanisms 8, the external platform is slowly put down to enable the assembly holes to be sleeved on the outer sleeve 803, the assembly operation is started after the initial positioning, the deflector rod 801 is rotated to drive the outer sleeve 803 to rotate to a certain degree, at the moment, the inner wall of the assembly holes is tightly supported by the supporting plate 807, when the outer sleeve 803 cannot further rotate, the deflector rod 801 is continuously rotated, at the moment, the inner sleeve 806 can move relative to the outer sleeve 803, under the action of thread connection, the inner sleeve 806 moves towards one side of the buckling block 818, the buckling block 818 and the top end wall of the assembly holes are mutually clamped through the limiting head 816, at the moment, the deflector rod 801 cannot continuously and easily rotate, the dial plate 802 forms a rigid whole relative to the inner sleeve 806 and the outer sleeve 803 again, and the deflector rod 801 cannot rotate with force again, the process achieves the purpose that the supporting plate 807 completely supports the inner wall of the assembly hole. The core bar 805 is only required to be ejected out in the dismounting process, and the driving lever 801 is rotated reversely, so that the whole dismounting is reliable, convenient and reliable.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. It should be noted that structures or components illustrated in the drawings are not necessarily drawn to scale, and descriptions of well-known components and processing techniques and procedures are omitted to avoid unnecessarily limiting the invention.

Claims

1. The supporting framework for the transport semitrailer is characterized by comprising two longitudinal beams and a plurality of cross beams fixedly arranged between the two longitudinal beams, wherein each longitudinal beam is provided with at least two groups of sliding assemblies, each sliding assembly comprises a sliding seat, a sliding block and a lead screw, the sliding seats are fixedly arranged on the longitudinal beams, sliding holes are machined in the upper surfaces of the sliding seats, the sliding blocks are movably matched with the sliding holes, the lead screws are arranged on the sliding seats, the lead screws are connected with the sliding blocks in a threaded mode, and the lead screws are rotated to enable the sliding blocks to slide along the sliding holes; each sliding block is provided with a positioning block, and a connecting mechanism for connecting an assembling hole on an external platform is arranged on each positioning block;

at least two groups of sliding assemblies on each longitudinal beam are arranged on one side, far away from the cross beam, of each longitudinal beam side by side;

the connecting mechanism comprises a driving plate, an outer sleeve and a tensioning sleeve, wherein a vertical through hole is processed on the positioning block, the outer sleeve can rotatably penetrate through the vertical through hole, an end face bearing is installed at the lower port of the outer sleeve, one side end face of the driving plate is connected with the end face bearing, a damping pad is arranged between the outer edge of the driving plate and the inner hole wall of the outer sleeve, a plurality of driving rods are arranged at one end of the driving plate, which is far away from the end face bearing, the tensioning sleeve is sleeved on the outer sleeve, a plurality of groups of tensioning assemblies are arranged between the outer ring wall of the outer sleeve and the inner hole wall of the tensioning sleeve, and the tensioning assemblies can be tensioned in the tensioning sleeve along with the rotation of the outer sleeve;

the tightening assembly comprises a first connecting rod, a second connecting rod and a supporting plate, a first lantern ring and a second lantern ring are sleeved on the outer sleeve, the first lantern ring is in threaded connection with the outer sleeve, the second lantern ring is in rotatable connection with the outer sleeve, the middle parts of the first connecting rod and the second connecting rod are hinged with each other, two ends of the first connecting rod are hinged with one end of the supporting plate and the first lantern ring through pin type hinged supports respectively, two ends of the second connecting rod are hinged with the other end of the supporting plate and the second lantern ring through pin type hinged supports respectively, and hinged holes in the pin type hinged supports between the first connecting rod and the first lantern ring and between the second connecting rod and the supporting plate are strip-shaped holes; a T-shaped sliding groove is processed on the side wall of the positioning block close to the tensioning sleeve, the T-shaped sliding groove is arranged along the radial direction of the tensioning sleeve, and a sliding part in sliding fit with the T-shaped sliding groove is arranged at one end of the supporting plate;

an adjusting screw hole is processed on the drive plate, the central axis of the adjusting screw hole is superposed with the central axis of the outer sleeve, the adjusting screw hole is in threaded fit with an inner sleeve, one end of the inner sleeve penetrates into an inner hole of the outer sleeve and is formed with a limiting head, a plurality of buckling blocks are arranged at one end port of the outer sleeve far away from the end face bearing, the buckling blocks are rotationally and symmetrically distributed around the central axis of the outer sleeve, one end of each buckling block is hinged in the inner hole of the outer sleeve through a rotating pin, and one end of the buckling block far away from the limiting head can rotate towards one side far away from the central axis of the outer sleeve, a clamping part which can extend out of the outer sleeve is formed at one end of the clamping block away from the limiting head, through the removal of inner skleeve, the stopper with buckle piece one end effect can make the joint portion of this buckle piece towards keeping away from one side rotation of outer skleeve axis.

2. The supporting frame for the transportation semitrailer according to claim 1, wherein the sliding seat comprises a seat body and limiting plates formed on the lower surfaces of two sides of the seat body, the sliding hole is arranged on the seat body, the length direction of the sliding hole is consistent with that of the longitudinal beam, the upper end of the sliding block is connected with the positioning block, the lower end of the sliding block is located between the two limiting plates, one end of the screw rod rotatably penetrates through the two limiting plates and the lower end of the sliding block, and the two sides of the screw rod penetrating through the limiting plates are both provided with limiting rings.

3. The support frame for a transport semitrailer of claim 1, wherein the side of the clamping portion away from the central axis of the outer sleeve is an inclined surface, and the end of the inclined surface away from the limiting head is inclined toward the side close to the central axis of the outer sleeve.

4. The support frame for a transport semitrailer according to claim 1, wherein a truncated cone-shaped limit sunken groove is formed in a side of the limit head adjacent to the buckling block, a diameter expanding end of the limit sunken groove is adjacent to the buckling block, the limit head and a lower end of the buckling block act through movement of the inner sleeve, and the limit sunken groove enables the lower end of the buckling block to rotate towards a side close to a central axis of the outer sleeve.

5. The support frame for a transport semitrailer of claim 4, wherein a core rod is threadedly connected to an inner hole of the inner sleeve, one end of the core rod penetrates into the limit sunken groove and is formed with a push head, and the push head and one end of the buckling block act to enable the buckling part of the buckling block to rotate towards one side close to the central axis of the outer sleeve by rotating the core rod.

6. The support frame for a transport semitrailer of claim 5, wherein the push head is frustoconical and a reduced diameter end of the push head is proximate the snap-fit block.