CN220349665U - Lifting support leg of semitrailer - Google Patents

Abstract

The utility model relates to the technical field of semitrailer support legs, in particular to a semitrailer lifting support leg which comprises an outer support leg and an inner support leg which are connected in a sliding manner, wherein the top end of the inner wall of the outer support leg is rotationally connected with a screw rod, and the bottom end of the screw rod is in threaded connection with the top end of the inner support leg. The utility model has the advantages that: through setting up two spacing posts and shell, two supporting seats all with the bottom fixed connection of shell simultaneously, the side fixed connection of two spacing posts and outer supporting leg, be convenient for make the shell install on two spacing posts, through setting up battery and driving motor, driving motor's output fixedly connected with carries out the connecting sleeve who is connected with the spline shaft simultaneously, driving motor circular telegram operation drives spline shaft and a bevel gear and rotates, rotate between driving screw and the inner supporting leg, thereby be convenient for replace the manual work to make the inner supporting leg go on telescoping from top to bottom, reduce user's amount of labour, and overall structure is simple, convenient to use person's operation uses.

Description

Lifting support leg of semitrailer

Technical Field

The utility model relates to the technical field of semitrailer support legs, in particular to a semitrailer lifting support leg.

Background

The semitrailer landing leg is used for supporting the ground when the tractor unhooks with the trailer, bears semitrailer front portion load, rotates the crank and makes supporting device go up and down to have two grades of speed, and the high-speed shelves are used for empty load, and the low-speed shelves are used for the heavy load, and the outer wall of traditional semitrailer lift landing leg generally can be equipped with the shake handle, but the manual work shakes, carries out altitude mixture control to the landing leg, wastes time and energy, increases user's amount of labour, proposes a semitrailer lift landing leg based on this for replace the landing leg of manual work semitrailer to go up and down.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, provides a lifting support leg of a semitrailer, and effectively solves the defects of the prior art.

In order to achieve the above object, an embodiment of an aspect of the present utility model provides a lifting leg for a semitrailer, including an outer supporting leg and an inner supporting leg, which are slidably connected, wherein a screw rod is rotatably connected to a top end of an inner wall of the outer supporting leg, a bottom end of the screw rod is in threaded connection with a top end of the inner supporting leg, a spline shaft is rotatably connected to a top end of an outer wall of the outer supporting leg, bevel gears are fixedly connected to one ends of the spline shaft and the screw rod, two bevel gears are meshed with each other, a limit post is fixedly connected to a top end of one side of the outer supporting leg, two support seats are slidably connected to an outer wall of the limit post, a housing is fixedly connected to a top end of the two support seats, a storage battery and a driving motor are sequentially arranged in the housing, a connecting sleeve is fixedly connected to an output end of the driving motor, the connecting sleeve is slidably connected to one end of the spline shaft, and an upper cover is provided on a top surface of the housing.

By above-mentioned arbitrary scheme preferred, two the one end that outer supporting leg was kept away from to spacing post all is provided with the oblique angle, is convenient for make the tip position external diameter of two spacing posts reduce through using this scheme, forms the pointed end, and then is convenient for make the tip of two spacing posts directly get into the inside in spacing hole, accomplishes the installation to the shell, regard this as the supporting point simultaneously, is convenient for driving motor drive spline shaft and rotates.

By the above-mentioned arbitrary scheme preferred, two the top of supporting seat is all through the bottom surface fixed connection of bolt with the shell, two spacing holes have all been seted up to the side of supporting seat, and the internal diameter of four spacing holes is greater than the external diameter of two spacing posts respectively, is convenient for produce certain clearance between the inner wall in four spacing holes and the outer wall of two spacing posts through using this scheme, and the user of being convenient for promotes two supporting seats and slides along the outer wall of two spacing posts, makes the connecting sleeve dock with the one end of spline shaft.

By the preferred mode of above-mentioned arbitrary scheme, a plurality of ventilation slots have all been seted up to the both sides of shell, through using this scheme be convenient for make the inside of shell communicate with outside air through a plurality of ventilation slots, the heat that produces when making driving motor operation is dispelled, avoids driving motor to take place to damage because of the heat piles up.

By any of the above schemes, preferably, a gap is reserved between the storage battery and the inner walls of the driving motor and the shell, and by using the scheme, when the driving motor is electrified to run or the storage battery is charged, heat generated by the storage battery can be dissipated timely along the gap.

By the preferred top surface fixed connection of arbitrary scheme of above-mentioned upper cover through screw and shell, the middle part fixedly connected with handle of upper cover top surface through this scheme of use convenient to use user carries out earlier stage installation and later stage dismantlement to upper cover and shell, carries out the shutoff to the top of shell simultaneously, avoids outside foreign matter directly to causing impact to driving motor and battery.

The utility model has the following advantages:

1. this semitrailer lift landing leg through setting up two spacing posts and shell, two supporting seats all with the bottom fixed connection of shell simultaneously, the side fixed connection of two spacing posts and outer supporting leg, and then be convenient for make the shell install the outer wall at two spacing posts, through setting up battery and driving motor, driving motor's output fixedly connected with carries out the connecting sleeve who is connected with the spline shaft simultaneously, and then driving motor circular telegram operation, drive spline shaft and a bevel gear rotate, drive screw rotates between with the inner supporting leg, thereby be convenient for replace the manual work to make the inner supporting leg stretch out and draw back from top to bottom, reduce user's amount of labour, and overall structure is simple, convenient to use person's operation uses.

2. This semitrailer lift landing leg carries out fixed connection through setting up shell and upper cover through upper cover and shell, and then is convenient for cover battery and driving motor, protects battery and driving motor, and a plurality of ventilation slots have all been seted up to the both sides of shell simultaneously, make the inside and the outside air intercommunication of shell, the heat that produces when making driving motor operation dispels, avoids driving motor to pile up because of the heat and take place to damage.

3. This semitrailer lift landing leg through setting up shell, upper cover and handle, and upper cover and shell fixed connection, and then convenient to use person lifts the shell through the handle, and then is convenient for make two supporting seats install and dismantle with two spacing posts, can directly take off the shell, increases user's flexibility, two spacing posts respectively with two supporting seat sliding connection simultaneously, and then make the one end of connecting sleeve and integral key shaft carry out accurate cooperation.

Drawings

FIG. 1 is a schematic view of an assembled structure of the present utility model;

FIG. 2 is a schematic view of the present utility model in a cut-away configuration;

FIG. 3 is a schematic view of the outer support leg of the present utility model in partial cutaway;

FIG. 4 is a schematic view of a first view structure according to the present utility model;

FIG. 5 is a schematic view of the housing structure of the present utility model;

FIG. 6 is a schematic view of the structure of the upper cover of the present utility model;

fig. 7 is a schematic structural view of a limiting post according to the present utility model.

In the figure: the novel bicycle comprises a 1-outer supporting leg, a 2-inner supporting leg, a 3-supporting seat, a 4-outer shell, a 5-upper cover, a 6-handle, a 7-connecting sleeve, an 8-spline shaft, a 9-limit column, a 10-ventilation groove, an 11-storage battery, a 12-bevel gear, a 13-screw rod, a 14-driving motor and a 15-limit hole.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings, but the scope of the present utility model is not limited to the following.

As shown in fig. 1 to 7, a semitrailer lifting support leg comprises an outer support leg 1 and an inner support leg 2, which are in sliding connection, wherein the top end of the inner wall of the outer support leg 1 is rotationally connected with a screw rod 13, the bottom end of the screw rod 13 is in threaded connection with the top end of the inner support leg 2, the top end of the outer wall of the outer support leg 1 is rotationally connected with a spline shaft 8, one ends of the spline shaft 8 and the screw rod 13 are fixedly connected with bevel gears 12, the two bevel gears 12 are meshed with each other, the top end of one side of the outer support leg 1 is fixedly connected with a limit post 9, the outer walls of the two limit posts 9 are in sliding connection with two support seats 3, the top ends of the two support seats 3 are fixedly connected with a shell 4, a storage battery 11 and a driving motor 14 are sequentially arranged in the shell 4, the output end of the driving motor 14 is fixedly connected with a connecting sleeve 7, the connecting sleeve 7 is in sliding connection with one end of the spline shaft 8, and the top surface of the shell 4 is provided with an upper cover 5.

The two spacing posts 9 are provided with the oblique angle at the end far away from the outer supporting leg 1, as an alternative technical scheme of the utility model, the outer diameter of the end parts of the two spacing posts 9 is conveniently reduced to form a tip, the end parts of the two spacing posts 9 are conveniently led into the inside of the spacing holes 15 directly, the installation of the shell 4 is completed, and meanwhile, the two spacing posts are used as supporting points, so that the driving motor 14 is conveniently driven to rotate the spline shaft 8.

The top ends of the two supporting seats 3 are fixedly connected with the bottom surface of the shell 4 through bolts, two limiting holes 15 are formed in the side surfaces of the two supporting seats 3, the inner diameters of the four limiting holes 15 are respectively larger than the outer diameters of the two limiting columns 9, and as an optional technical scheme of the utility model, certain gaps are formed between the inner walls of the four limiting holes 15 and the outer walls of the two limiting columns 9, so that a user can push the two supporting seats 3 to slide along the outer walls of the two limiting columns 9 conveniently, and the connecting sleeve 7 is in butt joint with one end of the spline shaft 8.

The two sides of the shell 4 are provided with a plurality of ventilation grooves 10, which is an alternative technical scheme of the utility model, so that the inside of the shell 4 is conveniently communicated with the outside air through the plurality of ventilation grooves 10, and the heat generated when the driving motor 14 operates is dissipated, so that the damage of the driving motor 4 caused by heat accumulation is avoided.

A gap is reserved between the storage battery 11 and the inner walls of the driving motor 14 and the shell 4, and as an alternative technical scheme of the utility model, the heat generated by the storage battery 11 can be conveniently and timely dissipated along the gap when the driving motor 14 is electrified to run or the storage battery 11 is charged.

The upper cover 5 is fixedly connected with the top surface of the shell 4 through a screw, and the middle part of the top surface of the upper cover 5 is fixedly connected with the handle 6, so that a user can conveniently install the upper cover 5 and the shell 4 in the earlier stage and detach the upper cover in the later stage, and meanwhile, the top end of the shell 4 is plugged, and the impact of external foreign matters on the driving motor 14 and the storage battery 11 is avoided.

To sum up, when the user uses, through setting up two spacing posts 9 and shell 4, simultaneously two supporting seat 3 all with the bottom fixed connection of shell 4, two spacing posts 9 and the side fixed connection of outer supporting leg 1, and then be convenient for make shell 4 install the outer wall at two spacing posts 9, through setting up battery 11 and driving motor 14, simultaneously driving motor 14's output fixedly connected with carries out the connecting sleeve 7 that is connected with spline shaft 8, and then driving motor 14 circular telegram operation, drive spline shaft 8 and bevel gear 12 rotate, drive lead screw 13 rotates with interior supporting leg 2, thereby be convenient for replace artifical make interior supporting leg 2 go on flexible from top to bottom, reduce user's amount of labour, and overall structure is simple, convenient to use person's operation use, the rethread sets up shell 4 and upper cover 5, and shell 4 carry out fixed connection through upper cover 5, and further be convenient for cover battery 11 and driving motor 14, a plurality of grooves 10 have all been seted up to the both sides of shell 4 simultaneously, make shell 4's inside and outside motor 14 circular telegram operation, drive motor produces heat and the heat of carrying out and the user's of carrying out the two and pile up with the shell 4, and the heat of one end of carrying out the direct connection with the shell 4 is realized through the two and the 5, and the 5 is further the 5 is connected with the shell 4, and is convenient for take place the top cover 3, and the top cover is connected with the shell 4, and is further the 5, and is connected with the shell 4, and is convenient for take place the top cover 3 and is connected to take place the top and 5.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a semitrailer lift landing leg which characterized in that: including outer supporting leg (1) and interior supporting leg (2), both sliding connection, the top of outer supporting leg (1) inner wall rotates and is connected with lead screw (13), the bottom of lead screw (13) and the top threaded connection of interior supporting leg (2), the top of outer supporting leg (1) outer wall rotates and is connected with spline shaft (8), the equal fixedly connected with bevel gear (12) of one end of spline shaft (8) and lead screw (13), two bevel gear (12) intermeshing, the top fixedly connected with spacing post (9) of outer supporting leg (1) one side, two the outer wall sliding connection of spacing post (9) has two supporting seat (3), two the top fixedly connected with shell (4) of supporting seat (3), the inside of shell (4) has set gradually battery (11) and driving motor (14), the output fixedly connected with connecting sleeve (7) of driving motor (14), the one end sliding connection of connecting sleeve (7) and spline shaft (8), top surface (4) are provided with top cap (5).

2. A semitrailer lifting leg as claimed in claim 1, wherein: one ends of the two limit posts (9) far away from the outer support legs (1) are provided with bevel angles.

3. A semitrailer lifting leg as claimed in claim 2, wherein: the top ends of the two supporting seats (3) are fixedly connected with the bottom surface of the shell (4) through bolts, two limiting holes (15) are formed in the side surfaces of the two supporting seats (3), and the inner diameters of the four limiting holes (15) are respectively larger than the outer diameters of the two limiting columns (9).

4. A semitrailer lifting leg as claimed in claim 3, wherein: a plurality of ventilation grooves (10) are formed in two sides of the shell (4).

5. The lifting leg of a semitrailer as recited in claim 4, wherein: a gap is reserved between the storage battery (11) and the inner walls of the driving motor (14) and the shell (4).

6. A semitrailer lifting leg as claimed in claim 5, wherein: the upper cover (5) is fixedly connected with the top surface of the shell (4) through a screw, and a handle (6) is fixedly connected with the middle part of the top surface of the upper cover (5).