CN210591818U - Detachable transportation semitrailer supporting leg - Google Patents

Abstract

The utility model discloses a can dismantle transportation semitrailer landing leg belongs to semitrailer accessory technical field. A detachable transportation semitrailer landing leg comprises an upper support and a lower support, wherein the lower support is connected to the outer wall of the upper support in a sliding manner, the bottom of the upper support is connected with an installation table, a motor is fixedly connected to the installation table, the output end of the motor is connected with a worm, a worm wheel is connected to the installation table in a rotating manner, the worm is meshed with the worm wheel, a threaded hole is formed in the worm wheel, a lead screw is connected to the lower support in a rotating manner, and the lead screw is connected to the threaded hole in a threaded manner; the utility model discloses, through using worm and worm wheel cooperation lead screw nut mechanism, utilize its big drive ratio and auto-lock performance's characteristic, make the last support and the under bracing of semitrailer landing leg closely cooperate compact structure to need not to add self-lock mechanism, further simplified transmission structure, both solved traditional structure complicacy, the difficult problem of maintenance has avoided the shortcoming that current hydraulic control expense is high again.

Description

Detachable transportation semitrailer supporting leg

Technical Field

The utility model relates to a semitrailer accessory technical field especially relates to a can dismantle transportation semitrailer landing leg.

Background

The semitrailer is a transportation tool which is widely applied in the modern transportation industry, the front end of the semitrailer can be connected with a tractor to be supported and dragged by the tractor when the semitrailer runs, the front end of the semitrailer can be unhooked from the tractor when the semitrailer does not run, and the bottom of the front end of the semitrailer is provided with supporting legs for supporting the front end of the semitrailer after being dragged; the support legs are retracted generally when the semitrailer runs, so that the support legs are reliably prevented from contacting the ground, accidents are prevented, the semitrailer is supported in an assisting mode when being pulled or repaired, and stability and overhaul are facilitated.

In the prior art, the semitrailer outriggers which are low in price, most widely used and most traditional are all in a hand-operated type, a speed reducer is arranged in the semitrailer outriggers, but a locking device is required to be arranged due to the fact that direct gear transmission is used, and the lower support is prevented from being automatically retracted or falling down, so that in actual use, the internal structure is complex, great difficulty is brought to maintenance, regular maintenance is required, and the problem that the supporting quality is influenced due to the fact that the internal bevel gears are quickly abraded is solved; therefore, a detachable transportation semitrailer leg which does not need frequent maintenance and has better supporting effect is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects in the prior art, and providing a detachable transportation semitrailer supporting leg.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a can dismantle transportation semitrailer landing leg, includes support and under bracing, under bracing sliding connection supports the outer wall at last, it is connected with the mount table to support the bottom on, fixedly connected with motor on the mount table, the output of motor is connected with the worm, it is connected with the worm wheel to rotate on the mount table, the worm meshes with the worm wheel mutually, set up the screw hole in the worm wheel, the under bracing internal rotation is connected with the lead screw, lead screw threaded connection is in the screw hole.

Preferably, the bottom of the lower support is connected with a supporting plate, the top of the supporting plate is connected with a rotary table, and the screw rod is rotatably connected in the rotary table.

Preferably, the bottom of the screw rod is connected with a second limiting block which is integrally formed with the screw rod, and the second limiting block abuts against the inner wall of the rotary table.

Preferably, the top of the screw rod is connected with a first limiting block and is integrally formed with the screw rod, and the bottom of the first limiting block is abutted to the worm wheel.

Preferably, the top of the mounting table is connected with a bearing, and the worm wheel is rotatably connected to the top of the bearing.

Preferably, the top of the upper support is connected with a fixing plate and is integrally formed with the upper support, and the fixing plate is provided with a through hole.

Compared with the prior art, the utility model provides a can dismantle transportation semitrailer landing leg possesses following beneficial effect:

1. the detachable transportation semitrailer supporting leg is characterized in that an upper support penetrates through a through hole through a bolt to be fixed at the bottom of the front end of a semitrailer and is at least provided with two supporting legs so as to ensure the balance of the semitrailer, when a tractor needs to put down the semitrailer, a lower support slides downwards along the outer wall of the upper support to abut against the ground, specifically, a starting motor drives a worm to rotate, a worm wheel meshed with the worm rotates along with the worm and vertically rotates along with the axis of the worm, more closely, the worm and the worm wheel are in matched transmission, the transmission ratio of the worm and the worm wheel is large, the worm wheel can rotate faster, the detachable transportation semitrailer supporting leg has self-locking performance, an additional locking mechanism is not needed, the internal structure is simplified, the maintenance is convenient, friction can be greatly reduced due to the fact that the worm wheel rotates on a bearing, the rotation efficiency is improved, and in the process of, the lower support is moved downwards, and the screw rod is connected to the inside of the rotary table in a rotating mode, so that the lower support cannot rotate and can only bear the upward or downward pressure of the screw rod, and then slides along the outer wall of the upper support; the working principle of the lower support retraction is opposite to the working principle of the lower support falling, and the details are not described herein.

Drawings

Fig. 1 is a first schematic structural view of a detachable transportation semitrailer leg provided by the utility model;

fig. 2 is a schematic structural view of a detachable transportation semitrailer leg according to the present invention;

fig. 3 is a schematic structural view of a support on a detachable transportation semitrailer leg provided by the utility model;

fig. 4 is a schematic structural view of a detachable transportation semitrailer lower support leg support provided by the utility model;

fig. 5 is the utility model provides a can dismantle transport semitrailer landing leg lead screw's schematic structure.

In the figure: 1. an upper support; 101. a fixing plate; 1011. a through hole; 102. an installation table; 103. a motor; 1031. a worm; 1032. a worm gear; 1033. a threaded hole; 104. a bearing; 2. a lower support; 201. a support plate; 202. a turntable; 3. a lead screw; 301. a first limit; 302. and a second limit.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Example (b):

referring to fig. 1-5, a detachable transportation semitrailer landing leg comprises an upper support 1 and a lower support 2, wherein the lower support 2 is slidably connected to the outer wall of the upper support 1, the bottom of the upper support 1 is connected with an installation table 102, a motor 103 is fixedly connected to the installation table 102, the output end of the motor 103 is connected with a worm 1031, a worm wheel 1032 is rotatably connected to the installation table 102, the worm 1031 is meshed with the worm wheel 1032, a threaded hole 1033 is formed in the worm wheel 1032, a lead screw 3 is rotatably connected to the lower support 2, and the lead screw 3 is in threaded connection with the threaded.

Referring to fig. 2, the bottom of the lower supporter 2 is connected with a supporting plate 201, the top of the supporting plate 201 is connected with a turntable 202, and the screw rod 3 is rotatably connected in the turntable 202, so that when the screw rod 3 is engaged with the threaded hole 1033 to move up and down, the lower supporter 2 can be guaranteed to move together and only slide up and down.

The bottom of the screw rod 3 is connected with a second limiting block 302 and integrally formed with the screw rod 3, and the second limiting block 302 abuts against the inner wall of the turntable 202.

The top of the screw rod 3 is connected with a first limiting block 301 and is integrated with the screw rod 3, and the bottom of the first limiting block 301 is abutted to the worm wheel 1032.

The top of the upper support 1 is connected with a fixing plate 101 and integrally formed with the upper support 1, and a through hole 1011 is formed in the fixing plate 101.

A bearing 104 is connected to the top of the mounting block 102, and a worm gear 1032 is rotatably connected to the top of the bearing 104.

The working principle is as follows: in the utility model, the upper support 1 is fixed at the bottom of the front end of the semitrailer by penetrating through the through hole 1011 through the bolt, at least two support legs are provided to ensure the balance of the semitrailer, when the semitrailer needs to be put down, the lower support 2 slides downwards along the outer wall of the upper support 1 to support the support plate 201 against the ground, specifically, the starting motor 103 drives the worm 1031 to rotate, the worm wheel 1032 meshed with the worm 1031 rotates vertically with the axis of the worm 1031, more closely, the worm 1031 and the worm wheel 1032 are in matched transmission, the transmission ratio is large, the worm wheel 1032 can rotate faster, and has self-locking property without an additional locking mechanism, thereby simplifying the internal structure, being convenient for maintenance, because the worm wheel 1032 rotates on the bearing 104, the friction can be greatly reduced, the rotation efficiency is improved, in the rotating process of the worm wheel 1032, the lead screw 3 meshed with the threaded hole 1033 also rotates along the axis, the lower support 2 is moved downwards, and the screw rod 3 is rotatably connected inside the turntable 202, so that the lower support 2 can be ensured not to rotate and only can be pressed upwards or downwards by the screw rod 3 to slide along the outer wall of the upper support 1, when the support plate 201 reaches the ground, the motor 103 is powered off, and at the moment, the tractor can be driven away, and furthermore, the top of the screw rod 3 is connected with a first limit 301, so that the lower support 2 can be prevented from being disconnected due to the fact that the screw rod 3 rotates through the self stroke; the working principle of the lower support 2 for retraction is opposite to that of the lower support for falling, and the description thereof is omitted.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (6)

1. The utility model provides a can dismantle transportation semitrailer landing leg, includes and supports (1) and lower support (2), lower support (2) sliding connection supports (1) outer wall at last, its characterized in that, it is connected with mount table (102) to support (1) bottom on, fixedly connected with motor (103) on mount table (102), the output of motor (103) is connected with worm (1031), it is connected with worm wheel (1032) to rotate on mount table (102), worm (1031) and worm wheel (1032) mesh mutually, threaded hole (1033) have been seted up in worm wheel (1032), lower support (2) internal rotation is connected with lead screw (3), lead screw (3) threaded connection is in threaded hole (1033).

2. A detachable transportation semitrailer leg according to claim 1, characterized in that a supporting plate (201) is connected to the bottom of the lower support (2), a turntable (202) is connected to the top of the supporting plate (201), and the screw rod (3) is rotatably connected in the turntable (202).

3. The detachable transportation semitrailer outrigger according to claim 2, characterized in that a second limiting block (302) is connected to the bottom of the screw rod (3) and is integrally formed with the screw rod (3), and the second limiting block (302) abuts against the inner wall of the turntable (202).

4. The detachable transportation semitrailer leg support according to claim 3, characterized in that a first limiting block (301) is connected to the top of the lead screw (3) and is integrally formed with the lead screw (3), and the bottom of the first limiting block (301) is abutted to a worm wheel (1032).

5. A detachable transport semitrailer leg according to claim 1, characterized in that a bearing (104) is connected to the top of the mounting platform (102), and the worm gear (1032) is rotatably connected to the top of the bearing (104).

6. A detachable transportation semitrailer leg support according to claim 5, characterized in that a fixing plate (101) is connected to the top of the upper support (1) and is integrally formed with the upper support (1), and a through hole (1011) is formed in the fixing plate (101).

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