Supporting device for semitrailer

Abstract

The utility model relates to the technical field of supporting legs, in particular to a supporting device for a semitrailer. The device comprises a fixed sleeve and a telescopic leg movably sleeved in the fixed sleeve, the lower end of the telescopic leg is movably hinged to a supporting seat, a partition plate is horizontally arranged on the upper portion of the inner wall of the fixed sleeve, a lead screw is vertically arranged in the fixed sleeve, and the upper end of the lead screw movably penetrates out of the partition plate to be connected with a linkage bevel gear arranged in the fixed sleeve. The lower end of the linkage bevel gear vertically penetrates through the telescopic leg and is in threaded connection with the telescopic leg, and a transmission rod is horizontally arranged in the fixed sleeve above the linkage bevel gear. The lifting device is reasonable in structural design, convenient to operate, free of manual operation, capable of rapidly achieving lifting of the supporting legs, capable of greatly reducing the labor intensity of a driver, time-saving, labor-saving, low in manufacturing cost, convenient to maintain, capable of effectively reducing the maintenance cost and capable of solving many problems existing in the prior art.

Description

TECHNICAL FIELD

[0001] The utility model relates to a supporting leg technical field especially relates to a supporting device for semitrailer. BACKGROUND

[0002] The semitrailer is one of the transport tools mainly used in goods transportation and logistics distribution, because the truck head can be separated from the semitrailer, can greatly facilitate the work of the driver, does not need to wait for unloading, can effectively improve the transportation efficiency. And the supporting leg is an indispensable part of the semitrailer, its main function is to support the semitrailer after the semitrailer is separated from the truck head.

[0003] At present, the conventional supporting leg mainly has the hydraulic supporting leg and the hand-operated supporting leg. The hydraulic system integrated by the hydraulic supporting leg can quickly realize the lifting of the supporting leg, but its cost is high, and the maintenance cost is large, so most drivers rarely choose the hydraulic supporting leg. Compared with the hydraulic supporting leg, the hand-operated supporting leg is low in cost and is the choice of most drivers, but this kind of supporting leg completely relies on the manual operation of the driver, and needs to rotate the rocker for a long time to realize the lifting of the supporting leg, which is time-consuming and laborious, and has great disturbance to the drivers. UTILITY MODEL CONTENTS

[0004] The utility model makes up for the deficiency of prior art, provides a supporting device for semitrailer, it is reasonable in structure design, convenient operation, does not need manual operation, can realize the lifting of the supporting leg quickly, greatly reduces the labor intensity of the driver, saves time and energy, its cost is low, and it is convenient to maintain, effectively reduces the maintenance cost, solves many problems existing in prior art.

[0005] The utility model adopts the technical scheme that:

[0006] A supporting device for semitrailer, including fixed sleeve and telescopic leg of movable sleeve in fixed sleeve, support seat is movably connected at the lower end of telescopic leg, the upper part of the inner wall of fixed sleeve is provided with a partition, a lead screw is vertically arranged in the fixed sleeve, the upper end of the lead screw is movably connected with a linkage bevel gear arranged in the fixed sleeve, the lower end of the lead screw is vertically connected with a threaded seat arranged in the top plate of the telescopic leg, a transmission rod is horizontally arranged above the linkage bevel gear in the fixed sleeve, the rear end of the transmission rod is movably connected with the rear side wall of the fixed sleeve, the front end of the transmission rod is connected with a transmission mechanism through the front side wall of the fixed sleeve, a transmission bevel gear is movably arranged on the transmission rod in the fixed sleeve, the transmission bevel gear is engaged with the linkage bevel gear, a fixed support is arranged on the front side wall of the fixed sleeve, a driving mechanism is arranged on the fixed support and matched with the transmission mechanism, and mounting plates are arranged on the left and right sides of the rear side wall of the fixed sleeve.

[0007] Optionally, the transmission mechanism comprises a set of transmission assemblies arranged outside the fixed sleeve, the transmission assembly comprises a planet wheel arranged vertically outside the fixed sleeve, a triangular plate is arranged vertically between the planet wheel and the fixed sleeve, the front end of the transmission rod penetrates through the fixed sleeve and is fixedly connected to the center of the triangular plate, three corner ends of the front side wall of the triangular plate are respectively provided with clamping columns movably inserted into corresponding planet gears of the planet wheel, an end cover is arranged on the front side wall of the inner ring gear of the planet wheel, a connecting shaft is fixedly arranged in the sun gear of the planet wheel and penetrates through the end cover horizontally, a fixed shell is arranged on the fixed sleeve and covers the transmission assembly, the front end of the connecting shaft is movably clamped to the inner wall of the front side of the fixed shell, a worm gear is fixedly arranged on the connecting shaft between the fixed shell and the end cover, a worm is arranged vertically on one side of the worm gear and meshes with the worm gear, support plates are respectively arranged on the fixed shell corresponding to the positions of the shaft ends on both sides of the worm, the upper end of the worm is movably clamped to the upper support plate, and the lower end of the worm penetrates through the lower support plate vertically and is connected to the coupling.

[0008] Optionally, the transmission assembly is two sets, and the end of the connecting shaft of the first set of transmission assemblies is fixedly connected to the center of the triangular plate of the second set of transmission assemblies.

[0009] Optionally, the driving mechanism comprises a motor arranged on the fixed support, and the output shaft of the motor is connected to the coupling.

[0010] Optionally, the driving mechanism comprises a wind gun arranged on the fixed support, and the output shaft of the wind gun is connected to the coupling.

[0011] Optionally, the driving mechanism comprises a hydraulic motor arranged on the fixed support, and the output shaft of the hydraulic motor is connected to the coupling.

[0012] The utility model discloses the above-mentioned technical scheme, and has the advantages of reasonable structure design, convenient operation, no manual operation, can realize the lifting of the support leg quickly, greatly reduces the labor intensity of the driver, saves time and energy, and the cost is low, and it is convenient to maintain, effectively reduces the maintenance cost. ACCURACY OF DRAWINGS

[0013] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0014] Figure 2 It is Figure 1 the overhead structure schematic diagram;

[0015] Figure 3 It is Figure 2 the A-A section structure schematic diagram in;

[0016] Figure 4 It is the three-dimensional structure schematic diagram of two sets of transmission mechanisms;

[0017] Figure 5It is an explosion state stereoscopic structure schematic diagram of removing the connecting shaft in a set of transmission mechanism;

[0018] In the figure, 1, fixed sleeve; 2, telescopic leg; 3, support seat; 4, partition; 5, screw; 6, linkage bevel gear; 7, transmission rod; 8, transmission bevel gear; 9, fixed support; 10, mounting plate; 11, planetary gear; 1101, planetary gear; 1102, inner ring gear; 1103, end cover; 1104, sun gear; 12, triangular plate; 13, clamping column; 14, connecting shaft; 15, fixed shell; 16, worm; 17, worm; 18, support plate; 19, coupling; 20, motor; 21, threaded seat. DETAILED DESCRIPTION

[0019] In order to clearly illustrate the technical features of the present application, the present application will be described in detail below with specific embodiments and in conjunction with the accompanying drawings. In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, however, the present application can also be implemented in other ways different from those described herein, therefore, the scope of protection of the present application is not limited by the specific embodiments disclosed below.

[0020] In addition, in the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited by "first", "second" can be explicitly or implicitly included one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0021] In this application, unless otherwise clearly indicated and limited, the terms "mounting", "connection", "connecting", "fixed", and like terms should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integral. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances. In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the application. In the description of the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples.

[0022] As shown in Figures 1-5 A supporting device for semi-trailer, comprising a fixed sleeve 1 and a telescopic leg 2 movably sleeved in the fixed sleeve 1, a supporting seat 3 movably hinged at the lower end of the telescopic leg 2, a partition plate 4 horizontally arranged on the upper inner wall of the fixed sleeve 1, a lead screw 5 vertically arranged in the fixed sleeve 1, the upper end of the lead screw 5 movably penetrating through the partition plate 4 and connected with a linkage bevel gear 6 arranged in the fixed sleeve 1, the lower end of the lead screw 5 vertically penetrating through the top plate of the telescopic leg 2 and connected with a threaded seat 21 arranged in the top plate of the telescopic leg 2, a transmission rod 7 horizontally arranged above the linkage bevel gear 6 in the fixed sleeve 1, the rear end of the transmission rod 7 movably clamped on the rear side wall of the fixed sleeve 1, the front end of the transmission rod 7 penetrating through the front side wall of the fixed sleeve 1 and connected with a transmission mechanism, a transmission bevel gear 8 fixedly sleeved on the transmission rod 7 in the fixed sleeve 1 and engaged with the linkage bevel gear 6, a fixed support 9 arranged on the front side wall of the fixed sleeve 1, a driving mechanism arranged on the fixed support 9 and matched with the transmission mechanism, and a mounting plate 10 arranged on the left and right sides of the rear side wall of the fixed sleeve 1.

[0023] Optionally, the transmission mechanism comprises a set of transmission assemblies arranged outside the fixed sleeve 1, the transmission assembly comprises a planet wheel 11 arranged vertically outside the fixed sleeve 1, a triangular plate 12 is arranged vertically between the planet wheel 11 and the fixed sleeve 1, the front end of the transmission rod 7 penetrates the fixed sleeve 1 and is fixedly connected to the center of the triangular plate 12, three card columns 13 are arranged at the three corners of the front side wall of the triangular plate 12 and are movably inserted into the corresponding planet gear 1101 of the planet wheel 11, an end cover 1103 is arranged on the front side wall of the inner ring gear 1102 of the planet wheel 11, a connecting shaft 14 is fixedly arranged in the sun gear 1104 of the planet wheel 11 and penetrates the end cover 1103 horizontally, a fixed shell 15 is arranged on the front side wall of the fixed sleeve 1 and covers the transmission assembly, the front end of the connecting shaft 14 is movably connected to the inner wall of the front side of the fixed shell 15, a worm gear 16 is fixedly arranged on the connecting shaft 14 between the fixed shell 15 and the end cover 1103, a worm 17 is arranged vertically on one side of the worm gear 16 and is engaged with the worm gear 16, support plates 18 are arranged on the fixed shell 15 corresponding to the positions of the two shaft ends of the worm 17, the upper end of the worm 17 is movably connected to the upper support plate 18, and the lower end of the worm 17 penetrates the lower support plate 18 vertically and is connected to a coupling 19.

[0024] Optionally, the transmission assembly is two sets, the end of the connecting shaft 14 of the first set of transmission assemblies is fixedly connected to the center of the triangular plate 12 of the second set of transmission assemblies, and the planet wheels 11 of the two sets can adjust the overall rotation rate, so as to adapt to semi-trailers with different loads and realize the supporting effect.

[0025] Optionally, the driving mechanism comprises a motor 20 arranged on the fixed support 9, and the output shaft of the motor 20 is connected to the coupling 19.

[0026] Optionally, the driving mechanism comprises a wind gun arranged on the fixed support 9, and the output shaft of the wind gun is connected to the coupling 19.

[0027] Optionally, the driving mechanism comprises a hydraulic motor arranged on the fixed support 9, and the output shaft of the hydraulic motor is connected to the coupling 19.

[0028] When the device is used, when the semi-trailer needs to be supported, the driving mechanism is started to work, the output shaft of the motor 20 drives the worm 17 to rotate through the shaft coupling 19, and with the rotation of the worm 17, the worm wheel 16 is driven to rotate, and then the sun gear 1104 is driven to rotate through the connecting shaft 14. The sun gear 1104 drives each planetary gear 1101 to rotate in the inner ring gear 1102, and each planetary gear 1101 drives the triangular plate 12 to rotate through each clamping column 13, thereby driving the transmission rod 7 to rotate radially. Then, the transmission rod 7 drives the linkage bevel gear 6 to rotate radially through the transmission bevel gear 8, thereby realizing the rotation of the lead screw 5, and finally making the telescopic leg 2 extend downward, so that the supporting seat 3 abuts on the ground, and the semi-trailer is supported. It has reasonable structure design, convenient operation, does not need manual operation, can quickly realize the lifting of the supporting leg, greatly reduces the labor intensity of the driver, saves time and effort, has low cost, is convenient to maintain, effectively reduces the maintenance cost, and solves many problems existing in the prior art.

[0029] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application. Any alternative improvement or change made by those skilled in the art to the embodiments of the present application falls within the protection scope of the present application.

[0030] The parts not described in the present application are well-known to those skilled in the art.

Claims

1. A support device for a semitrailer, characterized in that The utility model relates to a telescopic leg drive mechanism, including fixed sleeve and movable sleeve telescopic leg in fixed sleeve, support seat is hingedly connected in movable sleeve telescopic leg lower end, the upper portion of fixed sleeve inner wall is equipped with the baffle horizontally, a lead screw is arranged in fixed sleeve vertically, the upper end of lead screw is connected with the linkage bevel gear arranged in fixed sleeve and is connected with the threaded seat screw thread of vertical through telescopic leg top plate and being arranged in telescopic leg top plate, drive link is horizontally arranged in fixed sleeve above linkage bevel gear, the rear end of drive link is hingedly connected on the rear side wall of fixed sleeve, and the front end of drive link is connected with drive mechanism and is connected with drive mechanism through the front side wall of fixed sleeve, drive bevel gear is fixedly arranged on drive link in fixed sleeve and is engaged with linkage bevel gear, fixed support is arranged on the front side wall of fixed sleeve, and drive mechanism is arranged on fixed support and is matched with drive mechanism, and mounting plate is arranged on the rear side wall of fixed sleeve.

2. The support device for a semitrailer according to claim 1, characterized in that The drive mechanism includes at least one drive assembly arranged outside the fixed sleeve, the drive assembly includes a planetary gear arranged vertically outside the fixed sleeve, a triangular plate is arranged vertically between the planetary gear and the fixed sleeve, the front end of the drive link is fixedly connected to the center of the triangular plate, the three corner ends of the front side wall of the triangular plate are respectively provided with clamping columns hingedly inserted into the corresponding planetary gears of the planetary gear, an end cover is arranged on the front side wall of the inner ring gear of the planetary gear, a connecting shaft is fixedly arranged in the sun gear of the planetary gear and horizontally passes through the end cover, a fixed shell is arranged on the front side wall of the fixed sleeve and covers the drive assembly, the front end of the connecting shaft is hingedly connected to the front inner wall of the fixed shell, a worm gear is fixedly arranged on the connecting shaft between the fixed shell and the end cover, a worm is arranged vertically on one side of the worm gear and engaged with the worm gear, support plates are respectively arranged on the fixed shell corresponding to the shaft end positions on both sides of the worm, the upper end of the worm is hingedly connected to the upper support plate, and the lower end of the worm is connected to the coupling and vertically passes through the lower support plate.

3. The support device for a semitrailer according to claim 2, characterized in that The drive assembly includes two groups, the end of the connecting shaft of the first group of drive assemblies is fixedly connected to the center of the triangular plate of the second group of drive assemblies.

4. The support device for a semitrailer according to claim 2, characterized in that The drive mechanism includes a motor arranged on the fixed support, and the output shaft of the motor is connected to the coupling.

5. The support device for a semitrailer according to claim 2, characterized in that The drive mechanism includes a wind gun arranged on the fixed support, and the output shaft of the wind gun is connected to the coupling.

6. The support device for a semitrailer according to claim 2, characterized in that The drive mechanism includes a hydraulic motor arranged on the fixed support, and the output shaft of the hydraulic motor is connected to the coupling.

Images