CN114103772B - Automatic lifting mechanism for semitrailer cargo bed - Google Patents
Automatic lifting mechanism for semitrailer cargo bed Download PDFInfo
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- CN114103772B CN114103772B CN202111230510.4A CN202111230510A CN114103772B CN 114103772 B CN114103772 B CN 114103772B CN 202111230510 A CN202111230510 A CN 202111230510A CN 114103772 B CN114103772 B CN 114103772B
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- lifting mechanism
- cargo bed
- hydraulic
- pipe
- supporting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P1/00—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
- B60P1/44—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading having a loading platform thereon raising the load to the level of the load-transporting element
- B60P1/4414—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading having a loading platform thereon raising the load to the level of the load-transporting element and keeping the loading platform parallel to the ground when raising the load
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D53/00—Tractor-trailer combinations; Road trains
- B62D53/04—Tractor-trailer combinations; Road trains comprising a vehicle carrying an essential part of the other vehicle's load by having supporting means for the front or rear part of the other vehicle
- B62D53/06—Semi-trailers
- B62D53/061—Semi-trailers of flat bed or low loader type or fitted with swan necks
- B62D53/062—Semi-trailers of flat bed or low loader type or fitted with swan necks having inclinable, lowerable platforms; Lift bed trailers; Straddle trailers
Abstract
The invention relates to the technical field of semitrailers, in particular to an automatic lifting mechanism for a cargo bed of a semitrailer; the device comprises a supporting mechanism, a lifting mechanism and a cargo bed mechanism, wherein the supporting mechanism comprises a main beam, a wheel set arranged at one end of the bottom of the main beam and a traction part arranged at the other end of the bottom of the main beam; the lifting mechanism comprises a plurality of groups of hydraulic branch pipes which are arranged perpendicular to the length direction of the main beam, piston rods are arranged at two ends of each hydraulic branch pipe, a bottom plate is supported at the end parts of the piston rods, a buffer air pipe is communicated with the middle part of each hydraulic branch pipe, a sealing head is arranged at one end, away from the hydraulic branch pipes, of each buffer air pipe, a piston body is arranged in each buffer air pipe in a sliding mode, the piston body, the sealing head and the buffer air pipes surround a synthesis air chamber, and high-pressure gas is filled in the air chamber; the goods table mechanism comprises an object table and a plurality of groups of hinged rods which are hinged with the bottom end of the object table; the damping effect in the transportation process is improved, and the height of the goods platform and the whole body can be reduced when the height limit is met, so that the lower part of the height limit rod is passed.
Description
Technical Field
The invention relates to the technical field of semitrailers, in particular to an automatic lifting mechanism for a semitrailer cargo bed.
Background
As is well known, a semitrailer is a truck that is towed by a towing vehicle through a towing seat and bears part of the mass of the semitrailer by the towing vehicle, and compared with a full trailer, the semitrailer does not have a tail flick condition, and has good high-speed driving stability, so that the semitrailer is widely applied to the field of high-speed transportation in China. The goods platform height of current semitrailer is fixed, can only be through dismantling partly goods at top or detour the limit for height pole when meetting the limit for height, and current semitrailer goods platform ubiquitous shock attenuation effect is relatively poor problem moreover, leads to using the reliability lower owing to jolt to cause the damage to the goods easily in the transportation.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the automatic lifting mechanism of the semitrailer cargo bed, which improves the damping effect in the transportation process, and can reduce the height of the cargo bed and the whole semitrailer cargo bed when meeting the height limit, so that the semitrailer cargo bed can pass below a height limit rod, and the use reliability is improved.
(II) technical scheme
In order to achieve the above object, the embodiment of the present application provides a semitrailer cargo bed automatic lifting mechanism, and this semitrailer cargo bed automatic lifting mechanism includes: the supporting mechanism comprises a main beam, a wheel set arranged at one end of the bottom of the main beam and a traction part arranged at the other end of the bottom of the main beam; the lifting mechanism is arranged at the top of the main beam and comprises a plurality of groups of hydraulic branch pipes which are perpendicular to the length direction of the main beam, piston rods are arranged at two ends of the hydraulic branch pipes, a bottom plate is supported at the end parts of the piston rods, one sides of the hydraulic branch pipes are communicated with buffering air pipes, sealing heads are arranged at one ends, away from the hydraulic branch pipes, of the buffering air pipes, piston bodies are arranged in the buffering air pipes in a sliding mode, the piston bodies, the sealing heads and the buffering air pipes surround a synthesis air chamber, and high-pressure gas is filled in the air chamber; the cargo bed mechanism comprises an object table and a plurality of groups of hinged rods, wherein the hinged rods are arranged at the bottom end of the object table, each group of hinged rods is far away from one end of the object table, and the one end of the object table is hinged with the supporting bottom plate.
Preferably, elevating system still includes that hydraulic pressure is responsible for, the input that hydraulic pressure was responsible for is provided with the connector of being connected with the hydraulic system of tractor to be provided with the hydrovalve in connector department, the output that hydraulic pressure was responsible for with multiunit hydraulic branch all communicates.
Preferably, a limiting ring for limiting the piston body is arranged in the buffering air pipe, and the limiting ring is fixedly connected with the inner wall of the buffering air pipe.
Preferably, the outer side of the piston body is provided with a plurality of annular grooves, sealing rings are arranged in the annular grooves, and the sealing rings are tightly attached to the inner side wall of the buffering air pipe.
Preferably, a supporting spring is arranged in the air chamber, and two ends of the supporting spring are respectively connected with the sealing head and the piston body.
Preferably, the buffer air pipes are arranged along the length direction of the main beam, and each group of hydraulic branch pipes is at least provided with one group of buffer air pipes.
Preferably, an inflation tube is arranged at the sealing head, and an inflation valve is arranged at the inflation tube.
Preferably, the top of the supporting mechanism is provided with a pipe groove for containing the hydraulic branch pipe, the hydraulic main pipe and the buffering air pipe.
Preferably, the supporting mechanism further comprises a supporting beam arranged on two sides of the main beam and supporting the supporting bottom plate, a sliding groove is formed in the supporting beam, and the supporting bottom plate is arranged in the sliding groove in a sliding manner.
Preferably, the goods platform mechanism is further provided with a plurality of groups of limiting rods arranged at the bottom end of the object stage, a plurality of groups of limiting holes are formed in the main beam, the bottom ends of the plurality of groups of limiting rods penetrate the plurality of groups of limiting holes respectively, and limiting nuts are arranged at the bottom ends of the plurality of groups of limiting rods.
(III) advantageous effects
Compared with the prior art, the invention provides an automatic lifting mechanism for a semitrailer cargo bed, which has the following beneficial effects:
1. according to the automatic lifting mechanism of the semitrailer cargo bed, in the driving process, the support base plate is pushed through the cooperation of the hydraulic branch pipe and the piston rod and supports the object stage through the hinge rod, when bumping occurs, the object stage transfers acting force to the support base plate through the hinge rod when moving downwards, the support base plate transfers acting force to the buffer air pipe through the piston rod and the hydraulic branch pipe, and high-pressure air in the air chamber is compressed through the piston body, so that the bumping buffering effect is achieved, and the damping effect in the transportation process is improved;
2. this automatic elevating system of semitrailer goods platform can reduce goods platform and holistic height through the partial hydraulic oil that emits in the hydraulic branch pipe when running into the limit for height through controlling the hydraulic oil mass in the hydraulic branch pipe according to what of the weight that carries cargo to can be current from the below of limit for height pole, then squeeze into hydraulic oil again in to the hydraulic branch pipe and jack up the objective table, improve the reliability of use.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic plan view of the present invention;
FIG. 3 is a schematic perspective view of another embodiment of the present invention;
FIG. 4 is a schematic perspective view of the present invention with the cargo bed mechanism removed;
FIG. 5 is a schematic perspective view of the connection of the hydraulic branch pipe and the buffer pipe according to the present invention;
FIG. 6 is a schematic diagram of the top view of the hydraulic manifold and buffer gas line connection of the present invention;
FIG. 7 is a schematic cross-sectional view taken along the line A-A of FIG. 6 according to the present invention;
FIG. 8 is a schematic plan view of a piston body and seal ring of the present invention;
in the drawings, the reference numbers: 1. a support mechanism; 2. a main beam; 3. a wheel set; 4. a traction part; 5. a lifting mechanism; 6. a hydraulic branch pipe; 7. a piston rod; 8. a support base plate; 9. a buffer air pipe; 10. a sealing head; 11. a piston body; 12. a cargo bed mechanism; 13. an object stage; 14. a hinged lever; 15. a hydraulic main pipe; 16. a connector; 17. a hydraulic valve; 18. a limiting ring; 19. a seal ring; 20. a support spring; 21. an inflation tube; 22. an inflation valve; 23. a pipe groove; 24. a support beam; 25. a chute; 26. a limiting rod; 27. and a limiting nut.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Referring to fig. 1 to 8, an embodiment of the present application provides an automatic lifting mechanism for a cargo bed of a semitrailer, including: the supporting mechanism 1 comprises a main beam 2, a wheel set 3 arranged at one end of the bottom of the main beam 2 and a traction part 4 arranged at the other end of the bottom of the main beam 2; the lifting mechanism 5 is arranged at the top of the main beam 2, the lifting mechanism 5 comprises a plurality of groups of hydraulic branch pipes 6 which are perpendicular to the length direction of the main beam 2, piston rods 7 are arranged at two ends of the hydraulic branch pipes 6, a bottom plate 8 is supported at the end parts of the piston rods 7, a buffer air pipe 9 is communicated with one side of each hydraulic branch pipe 6, a sealing head 10 is arranged at one end, far away from the hydraulic branch pipes 6, of each buffer air pipe 9, a piston body 11 is arranged in each buffer air pipe 9 in a sliding mode, the piston body 11, the sealing heads 10 and the buffer air pipes 9 enclose a synthesis air chamber, and high-pressure gas is filled in the air chamber; cargo bed mechanism 12, cargo bed mechanism 12 includes that objective table 13 and multiunit are articulated to be provided with the hinge bar 14 of objective table 13 bottom, every group hinge bar 14 is kept away from the one end of objective table 13 all with a set of supporting baseplate 8 is articulated.
In the application, in the driving process, the supporting base plate 8 is pushed through the matching of the hydraulic branch pipe 6 and the piston rod 7, the supporting base plate 8 supports the objective table 13 through the hinge rod 14, when bumping occurs, the objective table 13 transmits acting force to the supporting base plate 8 through the hinge rod 14 when moving downwards, the supporting base plate 8 transmits the acting force to the buffer air pipe 9 through the piston rod 7 and the hydraulic branch pipe 6, and high-pressure air in the air chamber is compressed through the piston body 11, so that the bumping buffering effect is achieved, and the damping effect in the transportation process is improved; according to the weight of carrying cargo how much, can be through the hydraulic pressure oil mass in the control hydraulic pressure branch pipe 6, can reduce goods platform and holistic height through emitting the partial hydraulic oil in the hydraulic pressure branch pipe 6 when meetting the limit for height to can be current from the below of limit for height pole, then squeeze into hydraulic oil again in to hydraulic pressure branch pipe 6 with objective table 13 jack-up, improve and use the reliability.
In particular, the number of hydraulic branch lines 6 depends on the overall cargo capacity.
In this application, girder 2 is kept away from one side of wheelset 3 and is provided with auxiliary leg for the goods platform supports the goods platform after breaking away from the tractor.
In the embodiment of the present application, the lifting mechanism 5 further includes a hydraulic main pipe 15, the input end of the hydraulic main pipe 15 is provided with a connector 16 connected with the hydraulic system of the tractor, a hydraulic valve 17 is arranged at the connector 16, and the output end of the hydraulic main pipe 15 is communicated with the multiple groups of hydraulic branch pipes 6.
Specifically, the hydraulic main pipe 15 is arranged below the multiple groups of hydraulic branch pipes 6, the bottom ends of the multiple groups of hydraulic branch pipes 6 are provided with communicating oil pipes communicated with the hydraulic main pipe 15, hydraulic oil in the hydraulic main pipe 15 is pumped into the hydraulic branch pipes 6 through the communicating oil pipes, and the input end of the hydraulic main pipe 15 is communicated with a hydraulic system of the tractor through a connector 16.
Furthermore, each communicating oil pipe is provided with a switch valve, the using number of the hydraulic branch pipes 6 can be selected according to the actual cargo carrying amount, and other hydraulic branch pipes 6 are reserved.
In the embodiment of the present application, a limiting ring 18 for limiting the piston body 11 is disposed inside the buffer air tube 9, and the limiting ring 18 is fixedly connected to the inner wall of the buffer air tube 9.
Specifically, the limiting ring 18 is disposed at one end adjacent to the hydraulic branch pipe 6, the piston body 11 is limited by the limiting ring 18, one side of the piston body 11 inside the buffer air pipe 9 is an air chamber filled with high-pressure gas, and the other side is hydraulic oil.
As shown in fig. 8, in the embodiment of the present invention, a plurality of annular grooves are formed on the outer side of the piston body 11, and sealing rings 19 are disposed in the plurality of annular grooves, wherein the sealing rings 19 are tightly attached to the inner side wall of the buffer air tube 9.
The sealing ring 19 at the outer side of the piston body 11 is tightly attached to the inner side wall of the buffer air pipe 9, so that the sealing performance between the piston body 11 and the buffer air pipe 9 is ensured.
Specifically, sealing washer 19 sets up in the ring channel to be provided with the sealed clamping ring that compresses tightly sealing washer 19 in the ring channel, make sealing washer 19 non-deformable, improve sealed effect, prevent the condition that the hydraulic oil seepage from getting into the air chamber.
Optionally, a supporting spring 20 is disposed in the air chamber, and two ends of the supporting spring 20 are respectively connected to the sealing head 10 and the piston body 11.
Through supporting spring 20 in the air chamber and the inside high-pressure gas common action of air chamber on piston body 11, improve the supporting effect to piston body 11, increase the ability of carrying cargo under the circumstances of guaranteeing shock-absorbing capacity.
In this application embodiment, buffering trachea 9 is followed the length direction of girder 2 sets up, every group hydraulic branch pipe 6 sets up a set of at least buffering trachea 9.
The number of buffer air pipes 9 can be one group, two groups, three groups or four groups, which is determined according to the actual cargo carrying capacity.
In the scheme, each hydraulic branch pipe is provided with two buffer air pipes.
As shown in fig. 7, in the embodiment of the present application, an inflation tube 21 is disposed at the sealing head 10, and an inflation valve 22 is disposed at the inflation tube 21.
The interior of the air chamber can be inflated through the inflation tube 21, so that the mole number of the gas in the air chamber is ensured.
In the embodiment of the present application, the top of the supporting mechanism 1 is provided with a pipe groove 23 for holding the hydraulic branch pipe 6, the hydraulic main pipe 15 and the buffer air pipe 9.
The hydraulic branch pipe 6, the hydraulic main pipe 15 and the buffer air pipe 9 are arranged in the pipe groove 23, so that the space is saved, the lifting of the objective table 13 is not influenced, and the height of the objective table 13 is reduced to the maximum extent.
Optionally, the top of the main beam 2 may further be provided with a supporting block for supporting the object stage 13, and after the height of the object stage 13 is reduced, the object stage 13 is supported by the supporting block.
In this application embodiment, the supporting mechanism 1 further includes a supporting beam 24 disposed on both sides of the main beam 2, the supporting base plate 8 is supported by the supporting beam 24, a sliding groove 25 is disposed on the supporting beam 24, and the supporting base plate 8 is slidably disposed in the sliding groove 25.
The supporting bottom plate 8 is arranged in the sliding groove 25 in a sliding mode, and the sliding groove 25 is perpendicular to the main beam 2.
Specifically, a triangular reinforcing rib is arranged at the bottom end of the supporting beam 24 and fixedly connected with the main beam 2, so that the supporting strength of the supporting beam 24 is ensured.
In the embodiment of the application, goods platform mechanism 12 is still including setting up the multiunit gag lever post 26 of objective table 13 bottom, be provided with the spacing hole of multiunit on the girder 2, the spacing hole of multiunit is passed respectively to the bottom of multiunit gag lever post 26 to all be provided with stop nut 27 in the bottom of multiunit gag lever post 26.
In this application, through the cooperation in gag lever post 26 and spacing hole for objective table 13 can only take place the displacement in vertical direction, carries on spacingly to objective table 13 at the horizontal direction, prevents that objective table 13 from taking place relative displacement at horizontal direction and girder 2.
Further, the limiting rod 26 is limited by the limiting nut 27, and when the limiting nut 27 contacts the bottom end of the main beam 2, i.e. the highest position of the object stage 13, the hinge rod 14 is still in an inclined state.
Optionally, a rubber pad can be arranged at the bottom end of the main beam 2, and the rubber pad is in contact with the limit nut 27, so that the buffering effect is further improved.
Alternatively, the stop nut 27 may also be a stop pin.
When the automatic lifting mechanism of the semitrailer cargo bed is used, in the driving process, the support base plate 8 is pushed through the matching of the hydraulic branch pipe 6 and the piston rod 7, the support base plate 8 supports the object carrying platform 13 through the hinge rod 14, when bumping occurs, the object carrying platform 13 transfers acting force to the support base plate 8 through the hinge rod 14 when moving downwards, the support base plate 8 transfers the acting force to the buffer air pipe 9 through the piston rod 7 and the hydraulic branch pipe 6, and high-pressure air in the air chamber is compressed through the piston body 11, so that the bumping buffering effect is achieved, and the damping effect in the transportation process is improved; according to the weight of the cargos, the cargo bed and the whole height can be reduced by controlling the hydraulic oil amount in the hydraulic branch pipe 6 and discharging partial hydraulic oil in the hydraulic branch pipe 6 when the cargo bed meets the height limit, so that the cargo bed can pass below the height limit rod, and then the hydraulic oil is driven into the hydraulic branch pipe 6 again to jack up the cargo bed 13, and the use reliability is improved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a semitrailer goods platform automatic lifting mechanism which characterized in that includes:
the supporting mechanism (1) comprises a main beam (2), a wheel set (3) arranged at one end of the bottom of the main beam (2) and a traction part (4) arranged at the other end of the bottom of the main beam (2);
the lifting mechanism (5) is arranged at the top of the main beam (2), the lifting mechanism (5) comprises a plurality of groups of hydraulic branch pipes (6) which are perpendicular to the length direction of the main beam (2), piston rods (7) are arranged at two ends of each hydraulic branch pipe (6), a supporting bottom plate (8) is arranged at the end part of each piston rod (7), a buffering air pipe (9) is communicated with one side of each hydraulic branch pipe (6), a sealing head (10) is arranged at one end, away from the hydraulic branch pipes (6), of each buffering air pipe (9), a piston body (11) is arranged in each buffering air pipe (9) in a sliding mode, the piston body (11), the sealing head (10) and the buffering air pipes (9) enclose a synthesis air chamber, and high-pressure gas is filled in the air chamber;
cargo bed mechanism (12), cargo bed mechanism (12) including objective table (13) and multiunit articulated set up in articulated rod (14) of objective table (13) bottom, every group articulated rod (14) are kept away from the one end of objective table (13) all with a set of supporting baseplate (8) are articulated.
2. The automatic lifting mechanism of the cargo bed of the semitrailer according to claim 1, characterized in that the lifting mechanism (5) further comprises a main hydraulic pipe (15), wherein a connector (16) connected with a hydraulic system of the tractor is arranged at an input end of the main hydraulic pipe (15), a hydraulic valve (17) is arranged at the connector (16), and an output end of the main hydraulic pipe (15) is communicated with the plurality of groups of the hydraulic branch pipes (6).
3. The semitrailer cargo bed automatic lifting mechanism according to claim 1, characterized in that a limiting ring (18) for limiting the piston body (11) is arranged inside the buffer air pipe (9), and the limiting ring (18) is fixedly connected with the inner wall of the buffer air pipe (9).
4. The automatic lifting mechanism of a semitrailer cargo bed according to claim 1, characterized in that a plurality of annular grooves are arranged on the outer side of the piston body (11), sealing rings (19) are arranged in the annular grooves, and the sealing rings (19) are tightly attached to the inner side wall of the buffer air pipe (9).
5. The automatic lifting mechanism of semitrailer cargo bed according to claim 1, characterized in that a supporting spring (20) is arranged in the air chamber, and two ends of the supporting spring (20) are respectively connected with the sealing head (10) and the piston body (11).
6. The automatic lifting mechanism of a semitrailer cargo bed according to claim 1, characterized in that the buffer air pipes (9) are arranged along the length direction of the main beam (2), and at least one group of buffer air pipes (9) is arranged on each group of hydraulic branch pipes (6).
7. The automatic lifting mechanism of semitrailer cargo platforms of claim 1, characterized in that an inflation tube (21) is provided at the sealing head (10), and an inflation valve (22) is provided at the inflation tube (21).
8. The automatic lifting mechanism of a semitrailer cargo bed according to claim 2, characterized in that the top of the supporting mechanism (1) is provided with pipe slots (23) for accommodating the hydraulic branch pipes (6), the hydraulic main pipe (15) and the buffer air pipes (9).
9. The automatic lifting mechanism of a semitrailer cargo bed according to claim 1, characterized in that the supporting mechanism (1) further comprises supporting beams (24) disposed on both sides of the main beam (2) for supporting the supporting base plate (8), the supporting beams (24) are provided with sliding grooves (25), and the supporting base plate (8) is slidably disposed in the sliding grooves (25).
10. The automatic lifting mechanism of a semitrailer cargo bed according to any one of claims 1 to 9, characterized in that the cargo bed mechanism (12) further comprises a plurality of sets of limiting rods (26) arranged at the bottom end of the cargo bed (13), the main beam (2) is provided with a plurality of sets of limiting holes, the bottom ends of the plurality of sets of limiting rods (26) respectively pass through the plurality of sets of limiting holes, and limiting nuts (27) are arranged at the bottom ends of the plurality of sets of limiting rods (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111230510.4A CN114103772B (en) | 2021-10-22 | 2021-10-22 | Automatic lifting mechanism for semitrailer cargo bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111230510.4A CN114103772B (en) | 2021-10-22 | 2021-10-22 | Automatic lifting mechanism for semitrailer cargo bed |
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| Publication Number | Publication Date |
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| CN114103772A CN114103772A (en) | 2022-03-01 |
| CN114103772B true CN114103772B (en) | 2022-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111230510.4A Active CN114103772B (en) | 2021-10-22 | 2021-10-22 | Automatic lifting mechanism for semitrailer cargo bed |
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Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060051191A1 (en) * | 2004-07-22 | 2006-03-09 | The Braun Corporation | Barrier sensor apparatus and method |
| KR200419393Y1 (en) * | 2006-04-10 | 2006-06-20 | 이춘식 | A dragger for moving small-sized ship |
| CN101204937A (en) * | 2007-12-14 | 2008-06-25 | 浙江工业大学 | Loading and unloading transport vehicle basing car hopper lifting device |
| US10232757B2 (en) * | 2016-09-22 | 2019-03-19 | Bernardo Sawatzky | Pick-up truck cargo lift system and method |
| CN108423594A (en) * | 2018-05-15 | 2018-08-21 | 河南省通用矿山起重机械有限公司 | A kind of fixed hydraulic hoistable platform |
| CN108773420A (en) * | 2018-06-14 | 2018-11-09 | 蒙城县东正汽车有限公司 | A kind of adjustable passenger vehicle conveying semi-trailer of divider height |
| CN208978725U (en) * | 2018-08-15 | 2019-06-14 | 安徽开乐专用车辆股份有限公司 | A kind of helicopter transport vehicle |
| CN108749705A (en) * | 2018-08-16 | 2018-11-06 | 湖北科技学院 | A kind of construction tile transport device |
| CN209776269U (en) * | 2019-01-08 | 2019-12-13 | 山东华劲专用汽车制造有限公司 | cargo bed can incline and turn over flat board transportation semitrailer |
| CN211567769U (en) * | 2019-10-17 | 2020-09-25 | 北京俭恒科技有限公司 | Hydraulic lifting goods table |
| CN210591590U (en) * | 2019-10-22 | 2020-05-22 | 梁山开元交通设备制造有限公司 | Carriage for transport semitrailer |
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2021
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