CN218858255U - Back door lifting device of self-discharging semitrailer - Google Patents
Back door lifting device of self-discharging semitrailer Download PDFInfo
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- CN218858255U CN218858255U CN202223169345.9U CN202223169345U CN218858255U CN 218858255 U CN218858255 U CN 218858255U CN 202223169345 U CN202223169345 U CN 202223169345U CN 218858255 U CN218858255 U CN 218858255U
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Abstract
The utility model discloses a self-discharging semitrailer back door elevating gear, comprising a base plate, two carriages of top fixedly connected with of bottom plate, the inside of bottom plate is equipped with the cavity, the inner wall fixedly connected with motor of cavity, two equal fixedly connected with transfer line of two outputs of motor, two the transfer line all rotates with the cavity inner wall to be connected, two the equal fixedly connected with initiative bevel gear of outer wall of transfer line, two initiative bevel gear all meshes driven bevel gear, two the equal fixedly connected with threaded rod of driven bevel gear, two the threaded rod all runs through the bottom plate and is connected two rather than rotating the threaded rod runs through the carriage respectively and is connected rather than rotating. The utility model can automatically close the motor when descending, thereby avoiding the motor from being damaged due to overload; through clearing up under the door body, detach the rubble on the bottom plate, avoid the door body to block.
Description
Technical Field
The utility model relates to a self-discharging semitrailer technical field especially relates to a self-discharging semitrailer back door elevating gear.
Background
The semitrailer is land transportation equipment with strong carrying capacity, economy and practicability, and the semitrailer in the current market is a container pulled by a vehicle head.
The prior art discloses a dump semi-trailer back door elevating gear that application number is CN202122613458.2, comprising a base plate, the up end fixedly connected with carriage of bottom plate, the opening has been seted up to the rear end face of carriage, be equipped with a body in the opening, logical groove, two have all been seted up on the open-ended both sides lateral wall logical inslot all be equipped with the elevating system who is used for going up and down to the door body, it is used for carrying out clear clean mechanism to it to be equipped with on leading to the inslot, be equipped with in the bottom plate and be used for carrying out the link gear that links to two elevating system, be equipped with on the right side lateral wall of bottom plate and be used for carrying out driven actuating mechanism to the link gear. The utility model discloses a make two threaded rods rotate to make the movable block area connecting block make the door body rise, reach the automatic rising effect to the door body, reduce the goods and drop and pound the condition of hindering and appear, the rethread makes dust and impurity on the cleaning brush will lead to the inslot wall clean, avoids the connecting block to appear the condition of blocking at the in-process that removes.
In the above granted patents, although the automatic lifting of the door body is realized, when the door body is lowered to abut against the bottom plate, the motor will continue to work, which causes the motor to be overloaded and dangerous, and is easy to damage the motor; after the stones are pulled to be unloaded, broken stones are left on the bottom plate at the moment, when the broken stones are located under the door body, the door body and the bottom plate cannot be tightly abutted due to the broken stones when the door body descends, and the door body is easily clamped.
In order to solve the problems, the application provides a rear door lifting device of a self-unloading semitrailer.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects in the prior art, and provides a lifting device for a rear door of a self-discharging semitrailer, which can prevent the motor from being damaged due to overload by automatically closing the motor when the semitrailer descends; through clearing up under the door body, detach the rubble on the bottom plate, avoid the door body to block.
In order to realize the purpose, the utility model adopts the following technical scheme:
the utility model provides a self-discharging semitrailer back door elevating gear, includes the bottom plate, two carriages of top fixedly connected with of bottom plate, the inside of bottom plate is equipped with the cavity, the inner wall fixedly connected with motor of cavity, two equal fixedly connected with transfer line of two outputs of motor, two the transfer line all rotates with the cavity inner wall to be connected, two the equal fixedly connected with drive bevel gear of outer wall of transfer line, two drive bevel gear all meshes driven bevel gear, two the equal fixedly connected with threaded rod of driven bevel gear, two the threaded rod all runs through the bottom plate and is connected rather than rotating, two the threaded rod runs through the carriage respectively and is connected rather than rotating, two the outer wall of threaded rod all overlaps and is equipped with the fixed block rather than threaded connection, two the fixed block runs through the carriage setting respectively, two the common fixedly connected with door body of fixed block, two the equal fixedly connected with pressure sensors of inner wall of carriage, the inner wall fixedly connected with center board of cavity, the bottom fixedly connected with shift knob of bottom plate, the bottom of the door body is equipped with the clearance roller, the equal fixedly connected with rotation axis, two equal fixedly connected with the rack meshes with the carriage end respectively with two the rack end.
Preferably, the motor and the inner wall of the cavity are fixedly installed through bolts.
Preferably, the two threaded rods are threaded in opposite directions.
Preferably, a through hole penetrates through the fixing block, and an external thread and an internal thread which are matched with each other are respectively arranged on the outer wall of the threaded rod and the inner wall of the through hole.
Preferably, the outer wall of the cleaning roller is provided with a plurality of brushes.
Preferably, the front end of the rack plate is provided with a plurality of rack teeth which are engaged with the gear.
Compared with the prior art, the utility model, its beneficial effect does:
1. when the door body moves down, the cleaning roller, the rotating shaft and the gear can move downwards simultaneously, the gear, the rotating shaft and the cleaning roller can rotate while descending through the meshing of the gear and the rack plate, the brush on the outer wall can be driven to rotate through the rotation of the cleaning roller, when the cleaning roller contacts with the top of the bottom plate, the brush can clean residual broken stones on the top of the bottom plate at the moment, and the smooth contact with the bottom plate and the balance of the door body are ensured by cleaning under the door body.
2. When the top of the door body and the bottom plate offsets, the fixed block just in time contacts with the pressure sensor, and the pressure sensor feels pressure and gives central processing unit with signal transmission this moment, and rethread central processing unit closes the motor, can realize the closely offset setting in the top of the door body and bottom plate automatically, realizes closing of motor automatically, thereby avoids the damage that the motor continues to work and causes the motor.
In conclusion, the motor is automatically turned off when the elevator descends, so that the motor is prevented from being damaged due to overload; through clearing up under the door body, detach the rubble on the bottom plate, avoid the door body to block.
Drawings
Fig. 1 is a cross-sectional view of a rear door lifting device of a dump semi-trailer according to the present invention;
fig. 2 is a sectional view of a part of the structure in the rear door lifting device of the dump semi-trailer.
In the figure: the automatic cleaning device comprises a base plate 1, a carriage 2, a motor 3, a transmission rod 4, a driving bevel gear 5, a driven bevel gear 6, a threaded rod 7, a fixing block 8, a door 9, a pressure sensor 10, a central processing unit 11, a switch button 12, a cleaning groove 13, a cleaning roller 14, a rotating shaft 15, a gear 16 and a rack plate 17.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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.
Referring to fig. 1-2, a lifting device for a rear door of a dump trailer, which comprises a bottom plate 1, two carriages 2 fixedly connected to the top of the bottom plate 1, a cavity is arranged inside the bottom plate 1, a motor 3 is fixedly connected to the inner wall of the cavity, the motor 3 is fixedly installed on the inner wall of the cavity through bolts, transmission rods 4 are fixedly connected to two output ends of the motor 3, the two transmission rods 4 are rotatably connected to the inner wall of the cavity, a driving bevel gear 5 is fixedly connected to the outer wall of each transmission rod 4, a driven bevel gear 6 is meshed with the two driving bevel gears 5, a threaded rod 7 is fixedly connected to each of the two driven bevel gears 6, the two threaded rods 7 are opposite in thread direction, the two threaded rods 7 penetrate through the bottom plate 1 and are rotatably connected to the bottom plate, the two threaded rods 7 penetrate through the carriages 2 and are rotatably connected to the carriage 2, fixing blocks 8 connected to the threaded rods 7 are sleeved with the outer walls of the fixing blocks 8, through holes are formed in the fixing blocks 8, the outer walls and the through holes 7 are respectively provided with external threads and internal threads, the two fixing blocks 8 penetrate through the carriage fixing blocks and are capable of synchronously lifting the door bodies 9.
The equal fixedly connected with pressure sensors 10 of inner wall in two carriages 2, the inner wall fixedly connected with central processing unit 11 of cavity, the bottom fixedly connected with shift knob 12 of bottom plate 1, when the door body 9 descends to close, when the door body 9 just offsets with 1 top of bottom plate, fixed block 8 contacts with pressure sensors 10 this moment, thereby pressure sensors 10 sense pressure and give central processing unit 11 with the signal transmission and close motor 3, avoid motor 3 to continue work and lead to transshipping and damaging.
The bottom of the door body 9 is equipped with clearance groove 13, be equipped with clearance roller 14 in the clearance groove 13, the outer wall of clearance roller 14 is equipped with a plurality of brushes, the rubble impurity under the door body 9 can be cleared up through the rotation of brush, guarantee the inseparable counterbalance at door body 9 and 1 top of bottom plate, the equal fixedly connected with rotation axis 15 in both ends of clearance roller 14, two rotation axis 15 all run through a body 9 and rather than rotate and be connected, two rotation axis 15 all run through carriage 2 setting, the equal fixedly connected with gear 16 in the back of the body of two rotation axes 15, equal fixedly connected with rack plate 17 in two carriages 2, rack plate 17's front end is equipped with a plurality of and gear 16 matched with rack teeth, two gear 16 mesh with rack plate 17 respectively, it drives clearance roller 14 limit rotation in decline through the decline of a body 9 and clears up rubble impurity.
In the utility model, when the worker needs to lift the door body 9, the worker presses the switch button 12 at the moment so as to start the motor 3, the two output ends of the motor 3 drive the transmission rod 4, the driving bevel gear 5, the driven bevel gear 6 and the threaded rods 7 to rotate, the rotation directions of the two threaded rods 7 are opposite, and the two fixed blocks 8 and the door body 9 can move upwards through the opposite arrangement of the thread directions of the two threaded rods 7, so that the door body 9 is lifted, and subsequent unloading is facilitated; after unloading, the switch button 12 is pressed again, the motor 3 is started to rotate reversely, the output end of the motor 3 drives the transmission rod 4, the driving bevel gear 5, the driven bevel gear 6 and the threaded rod 7 to rotate reversely, so that the two fixed blocks 8 and the door body 9 move downwards, and the door body 9 descends; when the door body 9 moves downwards, the cleaning roller 14, the rotating shaft 15 and the gear 16 simultaneously move downwards, the gear 16, the rotating shaft 15 and the cleaning roller 14 can rotate while descending through the meshing of the gear 16 and the rack plate 17, the brush on the outer wall can be driven to rotate through the rotation of the cleaning roller 14, when the cleaning roller 14 is in contact with the top of the bottom plate 1, the brush can clean residual gravels on the top of the bottom plate 1 at the moment, and the bottom of the door body 9 is cleaned to ensure that the door body 9 is smoothly in contact with and abutted against the bottom plate 1; when the door body 9 offsets with the top of bottom plate 1, fixed block 8 just in time contacts with pressure sensor 10 this moment, and pressure sensor 10 feels pressure this moment and gives central processing unit 11 with the signal transmission, and rethread central processing unit 11 closes motor 3, can realize the inseparable offset setting in door body 9 and bottom plate 1's top automatically, realizes closing of motor 3 automatically, thereby avoids motor 3 to continue work and causes the damage of motor 3.
Claims (6)
1. The rear door lifting device of the self-discharging semitrailer comprises a bottom plate (1) and is characterized in that the top of the bottom plate (1) is fixedly connected with two carriages (2), a cavity is formed in the bottom plate (1), a motor (3) is fixedly connected to the inner wall of the cavity, two output ends of the motor (3) are fixedly connected with transmission rods (4), the two transmission rods (4) are rotatably connected with the inner wall of the cavity, the outer wall of each transmission rod (4) is fixedly connected with a driving bevel gear (5), the two driving bevel gears (5) are respectively meshed with a driven bevel gear (6), the two driven bevel gears (6) are fixedly connected with threaded rods (7), the two threaded rods (7) are respectively penetrated through the bottom plate (1) and rotatably connected with the bottom plate, the two threaded rods (7) are respectively penetrated through the bottom plate (2) and rotatably connected with the bottom plate, the outer wall of each driven bevel gear (5) is respectively meshed with a fixed block (8) in threaded connection with the threaded rod, the two fixed blocks (8) are respectively penetrated through the carriages (2), the two fixed blocks (8) are jointly and fixedly connected with a pressure sensor (10) arranged on the inner wall of each carriage (2), and a pressure sensor switch (12) is connected with the bottom of the cavity, the bottom of the door body (9) is equipped with clearance groove (13), be equipped with cleaning roller (14) in clearance groove (13), the equal fixedly connected with rotation axis (15) in both ends of cleaning roller (14), two rotation axis (15) all run through the door body (9) and rotate rather than being connected, two carriage (2) setting is all run through in rotation axis (15), two the equal fixedly connected with gear (16), two of the back of the body end mutually of rotation axis (15) equal fixedly connected with rack plate (17) in carriage (2), two gear (16) mesh with rack plate (17) respectively mutually.
2. The rear door lifting device of the dump semi-trailer according to claim 1, characterized in that the motor (3) and the inner wall of the cavity are fixed by bolts.
3. The rear door lifting device of the dump semi-trailer according to claim 1, characterized in that the thread directions of the two threaded rods (7) are opposite.
4. The rear door lifting device of the dump semi-trailer according to claim 1, wherein a through hole is formed in the fixing block (8) in a penetrating manner, and the outer wall of the threaded rod (7) and the inner wall of the through hole are respectively provided with an external thread and an internal thread which are matched with each other.
5. The rear door lifting device of the dump semi-trailer according to claim 1, wherein the cleaning roller (14) is provided with a plurality of brushes on the outer wall.
6. The rear door lifting device of the dump semi-trailer according to claim 1, characterized in that the front end of the rack plate (17) is provided with a plurality of rack teeth matched with the gear (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223169345.9U CN218858255U (en) | 2022-11-28 | 2022-11-28 | Back door lifting device of self-discharging semitrailer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223169345.9U CN218858255U (en) | 2022-11-28 | 2022-11-28 | Back door lifting device of self-discharging semitrailer |
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| Publication Number | Publication Date |
|---|---|
| CN218858255U true CN218858255U (en) | 2023-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223169345.9U Active CN218858255U (en) | 2022-11-28 | 2022-11-28 | Back door lifting device of self-discharging semitrailer |
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| CN (1) | CN218858255U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116533852A (en) * | 2023-05-23 | 2023-08-04 | 蒙阴县鹏程万里车辆有限公司 | Self-discharging semitrailer back door elevating gear |
-
2022
- 2022-11-28 CN CN202223169345.9U patent/CN218858255U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116533852A (en) * | 2023-05-23 | 2023-08-04 | 蒙阴县鹏程万里车辆有限公司 | Self-discharging semitrailer back door elevating gear |
| CN116533852B (en) * | 2023-05-23 | 2023-11-07 | 蒙阴县鹏程万里车辆有限公司 | Self-discharging semitrailer back door elevating gear |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A lifting device for the rear door of a dump semi trailer Effective date of registration: 20230628 Granted publication date: 20230414 Pledgee: Shandong Liangshan Rural Commercial Bank Co.,Ltd. Quanpu Branch Pledgor: Shandong xinyongcheng Special Purpose Vehicle Manufacturing Co.,Ltd. Registration number: Y2023980045914 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |