CN105109394A - Dump truck and cargo carriage sealing mechanism - Google Patents
Dump truck and cargo carriage sealing mechanism Download PDFInfo
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- CN105109394A CN105109394A CN201510583332.1A CN201510583332A CN105109394A CN 105109394 A CN105109394 A CN 105109394A CN 201510583332 A CN201510583332 A CN 201510583332A CN 105109394 A CN105109394 A CN 105109394A
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- loading space
- valve
- sealing strips
- space body
- expanding
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Abstract
The invention discloses a cargo carriage sealing mechanism. The cargo carriage sealing mechanism is specifically provided with an on-off valve, a supercharging device and an expansion sealing strip, wherein the expansion sealing strip is a hollow structure. When a clearance between a cargo carriage main body and a dumping door needs to be sealed (such as when the cargo carriage is transporting cargoes), the supercharging device is communicated with the expansion sealing strip by the on-off valve, a pressure medium provided by the supercharging device enters the interior of the expansion sealing strip, and the expansion sealing strip is enlarged under an effect of a pressure so as to block the clearance between the cargo carriage main body and the dumping door. When the clearance between the cargo carriage main body and the dumping door does not need to be sealed (such as in a dumping or non-loaded state), the expansion sealing strip is communicated with a lower pressure environment (such as atmosphere) by the on-off valve, the pressure medium in the expansion sealing strip flows out, and the expansion sealing strip is narrowed. On the basis of the cargo carriage sealing mechanism, the invention further discloses a dump truck with the cargo carriage sealing mechanism.
Description
Technical field
The present invention relates to loading space packing technique, be specifically related to a kind of dumping car and loading space sealing mechanism thereof.
Background technology
Dumping car be a kind of can the transport vehicle of unloaded of cargo voluntarily, there is the features such as automatic unloading, mobility strong, cargo handing efficiency can be improved, save labour power and time cost, become one of most important vehicle of current goods transport, it is widespread use in the industries such as urban construction, highway construction, hydraulic engineering and energy industry.
As shown in Figure 1, dumping car generally includes chassis 10 (illustrate only the part on chassis in figure), loading space and lifting device, and loading space and lifting device are all arranged on chassis, wherein, loading space comprises loading space body 20 and dump door 30, dump door 30 top and loading space body 20 hinged; One end (or side) and the chassis 10 of loading space body 20 are rotatably connected, and lifting device is generally telescopic oil cylinder 40, and one end of telescopic oil cylinder 40 is connected with chassis 10, and the other end is connected with bottom loading space body 20; During unloading, telescopic oil cylinder 40 extends, order about loading space body 20 to rotate relative to chassis 10, simultaneously, the bottom of dump door 30 departs from the contact with loading space body 20, goods glides along the base plate of loading space body under gravity, finally unloads from the space between loading space body 20 and dump door 30 bottom and drops down onto ground.
During normal operation, dump door needs frequent On/Off, leak between dump door and loading space body to prevent goods, usually the junction between dump door and loading space body arranges sealing band, namely rubber strip is set at loading space body and dump door contact position, loading space body and dump door are compressed by the deadweight of dump door and latch hook, realize sealing function, this sealing means can be called as passive seal; The shortcoming of sealing structure is: rubber strip arranges too small, then sealing effectiveness can not get ensureing, rubber strip arranges excessive, then rubber strip wearing and tearing are very fast; In addition, after using a period of time, wearing and tearing can cause rubber strip uneven, and then affect sealing effectiveness.
Summary of the invention
In view of this, the present invention proposes a kind of loading space sealing mechanism, utilizes this loading space sealing mechanism, can avoid the problem of the easy premature failure of conventional sealing band.On this basis, the present invention also proposes a kind of dumping car.
As first aspect, the present invention proposes a kind of loading space sealing mechanism, specifically comprise loading space body, dump door, on-off valve, expanding sealing strips and pressurizer; Top and the loading space body of described dump door are hinged, and described expanding sealing strips is hollow structure, is arranged at the contact position of loading space body and dump door; Described pressurizer, on-off valve and expanding sealing strips are sequentially connected, described pressurizer is used for providing pressure medium for expanding sealing strips, described on-off valve is for controlling supercharging and the decompression of expanding sealing strips, and described expanding sealing strips is used for expanding according to its internal pressure.
In preferred technical scheme, described loading space body is provided with seal groove, and described expanding sealing strips is arranged in seal groove.
In preferred technical scheme, described expanding sealing strips is made up of rubber.
The loading space sealing mechanism that the present invention proposes is provided with on-off valve, pressurizer and expanding sealing strips, and expanding sealing strips is hollow structure; When needing to seal the gap between loading space body and dump door (when such as loading space is freighted), pressurizer is communicated with expanding sealing strips by on-off valve, the pressure medium that pressurizer provides enters into expanding sealing strips inside, under pressure, expanding sealing strips increases, and then is blocked in the gap between loading space body and dump door; When gap without the need to sealing between loading space body and dump door (such as unloading or non-loading state), expanding sealing strips is communicated with environment under low pressure (such as air) by on-off valve, pressure medium in expanding sealing strips is flowed out, and expanding sealing strips reduces.
Due to the sealing band of conventional structure easily wear and tear, aging, expandability decay is very fast, causes sealing effectiveness to be guaranteed, there will be the problem of premature failure; The loading space sealing mechanism that the present invention proposes, the expansion effect of expanding sealing strips is determined by its internal pressure, and this internal pressure can carry out active accommodation as required; Therefore, compared with the sealing band of routine, utilize above-mentioned loading space sealing mechanism effectively can promote sealing effectiveness and the service life of loading space.
As second aspect, the present invention proposes a kind of dumping car, specifically comprise the loading space sealing mechanism of chassis, lifting device and above-mentioned any one; Described loading space body is arranged on described chassis, and its one end and chassis hinged; Described lifting device is located between chassis and loading space body, rotates relative to chassis for ordering about loading space body.
In preferred technical scheme, described dumping car comprises controller and lifting sensor; Described lifting sensor is electrically connected with controller, for detecting the lifting state of described loading space; Described controller is electrically connected with on-off valve, and described controller controls described on-off valve action according to described lifting state.
In preferred technical scheme, described lifting device comprises telescopic oil cylinder, and described lifting sensor is displacement pickup; Institute's displacement sensors is arranged on telescopic oil cylinder, for detecting the displacement of the piston rod of described telescopic oil cylinder.
In preferred technical scheme, described lifting device comprises telescopic oil cylinder, and described lifting sensor is the first pressure sensor; Described first pressure sensor is arranged on telescopic oil cylinder, for detecting the pressure in the rodless cavity of described telescopic oil cylinder.
In preferred technical scheme, described dumping car also comprises the second pressure sensor; Described second pressure sensor is electrically connected with controller, for detecting the gravity that described loading space body bears; Described controller controls described on-off valve action according to described gravity and lifting state.
In preferred technical scheme, when described gravity reaches predetermined value and loading space body is in non-lifting state, described controller controls on-off valve action and then is communicated with expanding sealing strips by pressurizer.
The dumping car that the present invention proposes is provided with above-mentioned loading space sealing mechanism, utilizes above-mentioned loading space sealing mechanism effectively can promote sealing effectiveness and the service life of loading space; Therefore, compared with prior art, the result of use of above-mentioned dumping car is better, and maintenance cost is lower.
Especially it is emphasized that, in preferred technical scheme, this dumping car is provided with controller, lifting sensor and the second pressure sensor, can automatically monitor the state of dumping car, and automatically adjust the state of expanding sealing strips according to the operating mode of dumping car, thus reach self-sealing effect.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the part-structure schematic diagram of dumping car in correlation technique;
The control principle drawing of the loading space sealing mechanism that Fig. 2 provides for the specific embodiment of the invention;
The part-structure schematic diagram of the loading space that Fig. 3 provides for the specific embodiment of the invention
Description of reference numerals:
In FIG: 10-chassis, 20-loading space body, 30-dump door, 40-telescopic oil cylinder
In Fig. 2 to 3:
1-pressurizer, 2-reducing valve, 3-on-off valve, 4-expanding sealing strips
5-the first pressure sensor 6-the second pressure sensor 7-controller 8-loading space body
9-dump door
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.Be described in detail below in conjunction with accompanying drawing 2 to 3 pairs of specific embodiments of the invention.
The specific embodiment of the invention propose dumping car comprise chassis, loading space and lifting device, loading space and lifting device are all arranged on chassis, and wherein, as shown in Figure 3, loading space comprises loading space body 8 and dump door 9, dump door 9 top and loading space body 8 hinged; One end and the chassis of loading space body 8 are rotatably connected; Lifting device can be telescopic oil cylinder, also can be combined by telescopic oil cylinder and connecting rod mechanism and form; In the present embodiment, lifting device is telescopic oil cylinder, and one end of telescopic oil cylinder is connected with chassis, and the other end is connected with bottom loading space body 8; During unloading, telescopic oil cylinder extends, and orders about loading space body 8 and rotates relative to chassis, simultaneously, the bottom of dump door 9 departs from the contact with loading space body 8, and goods glides along the base plate of loading space body 8 under gravity, finally unloads from the space between loading space body 8 and dump door 9 bottom and drops down onto ground.
In order to prevent goods in transportation from the clearance leakage between loading space body 8 and dump door 9, this dumping car is provided with the first pressure sensor 5, second pressure sensor 6, controller 7 and loading space sealing mechanism, except loading space body 8 and dump door 9, loading space sealing mechanism is also provided with on-off valve 3, expanding sealing strips 4, reducing valve 2 and pressurizer 1; Wherein, expanding sealing strips 4 is hollow structure, is arranged on the contact position of loading space body 8 and dump door 9, (it should be noted that, here contact position refers to below dump door 9 and loading space body 8 articulated position, during non-lifting state, and the position that loading space body 8 is corresponding with dump door 9).
As shown in Figure 2, pressurizer 1, reducing valve 2, on-off valve 3 and expanding sealing strips 4 are connected successively, and controller 7 is electrically connected with the first pressure sensor 5, second pressure sensor 6 and on-off valve 3 respectively; First pressure sensor 5 is arranged on telescopic oil cylinder, for detecting the pressure in the rodless cavity of telescopic oil cylinder; Second pressure sensor 6 is arranged on loading space body 8, for detecting the gravity that loading space body 8 bears; Controller 7 is according to controlled reset on-off valve 3 action of the first pressure sensor 5 and the second pressure sensor 6; Specific works principle is as follows:
1) in transportation, loading space body 8 bears loading space deadweight and cargo weight, and loading space is in non-lifting state, and now, the gravity that the second pressure sensor 6 detects exceedes loading space deadweight, and the pressure that the first pressure sensor 5 detects is lower; Leak between loading space body 8 and dump door 9 to prevent goods, when the gravity that the second pressure sensor 6 detects exceedes deadweight certain value (three point of such as rated load), controller 7 controls on-off valve 3 right position work, now, the P port of on-off valve 3 is communicated with A port, the pressure medium that pressurizer 1 provides enters expanding sealing strips 4 through P port, A port successively after reducing valve 2 reduces pressure, under pressure, expanding sealing strips 4 swells, thus blocks the gap between loading space body 8 and dump door 9.
2) in Discharging Process, loading space is in lifting state, the stressed obvious increase of telescopic oil cylinder, accordingly, the pressure that first pressure sensor 5 detects also increases, when this pressure reaches predetermined value, controller 7 controls on-off valve 3 left position work, now, the A port of on-off valve 3 is communicated with T port, pressure medium in expanding sealing strips 4 flows in environment under low pressure through A port, T port successively, the pressure in expanding sealing strips 4 is reduced, finally makes expanding sealing strips 4 shrink; Reduce the wearing and tearing of expanding sealing strips 4 in Discharging Process.
In the above-described embodiments, expanding sealing strips 4 can be arranged on loading space body 8, also can be arranged on dump door 9; Conveniently arrange, preferably expanding sealing strips 4 is arranged on loading space body 8.In more excellent embodiment, the afterbody of loading space body 8 is provided with U-shaped seal groove, and expanding sealing strips 4 is arranged in U-shaped seal groove, and U-shaped seal groove provide good support can to expanding sealing strips 4, improves that it is stressed, and reduces the bare area of expanding sealing strips 4.
In above-mentioned example, pressure medium can be specifically gas or liquid; Expanding sealing strips 4 is made up of elastomeric material, is preferably rubber.
Displacement pickup can be adopted in other embodiments to detect the displacement of the piston rod of telescopic oil cylinder, then judge whether loading space is in lifting state according to the displacement of piston rod, as being in lifting state, controller 7 controls on-off valve 3 left position work, thus makes expanding sealing strips 4 pressure release.Due to the existence of displacement pickup, accordingly, in this embodiment without the need to arranging the first pressure sensor 5.
Need ben, in above-described embodiment, according to the feedback automatic decision operating mode of sensor, and then automatic-sealed can be realized at controller 7.Under the thinking of low cost and simplified structure, controller 7 and corresponding sensor can also be dispensed, when needing sealing, the state of manual switching on-off valve 3, and then reach the effect making expanding sealing strips 4 supercharging or pressure release.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a loading space sealing mechanism, is characterized in that, comprises loading space body (8), dump door (9), on-off valve (3), expanding sealing strips (4) and pressurizer (1); Top and the loading space body (8) of described dump door (9) are hinged, and described expanding sealing strips (4) is hollow structure, are arranged at the contact position of loading space body (8) and dump door (9); Described pressurizer (1), on-off valve (3) and expanding sealing strips (4) are sequentially connected, described pressurizer (1) is for providing pressure medium for expanding sealing strips (4), described on-off valve (3) is for controlling supercharging and the decompression of expanding sealing strips (4), and described expanding sealing strips (4) is for expanding according to its internal pressure.
2. loading space sealing mechanism according to claim 1, is characterized in that, described loading space body (8) is provided with seal groove, and described expanding sealing strips (4) is arranged in seal groove.
3. loading space sealing mechanism according to claim 1, is characterized in that, described expanding sealing strips (4) is made up of rubber.
4. a dumping car, is characterized in that, comprises chassis, lifting device and the loading space sealing mechanism described in claims 1 to 3 any one; Described loading space body (8) is arranged on described chassis, and its one end and chassis hinged; Described lifting device is located between chassis and loading space body (8), rotates relative to chassis for ordering about loading space body (8).
5. dumping car according to claim 4, is characterized in that, comprises controller (7) and lifting sensor; Described lifting sensor is electrically connected with controller (7), for detecting the lifting state of described loading space; Described controller (7) is electrically connected with on-off valve (3), and described controller (7) controls described on-off valve (3) action according to described lifting state.
6. dumping car according to claim 5, is characterized in that, described lifting device comprises telescopic oil cylinder, and described lifting sensor is displacement pickup; Institute's displacement sensors is arranged on telescopic oil cylinder, for detecting the displacement of the piston rod of described telescopic oil cylinder.
7. dumping car according to claim 5, is characterized in that, described lifting device comprises telescopic oil cylinder, and described lifting sensor is the first pressure sensor (5); Described first pressure sensor (5) is arranged on telescopic oil cylinder, for detecting the pressure in the rodless cavity of described telescopic oil cylinder.
8. the dumping car according to claim 5 to 7 any one, is characterized in that, also comprises the second pressure sensor (6); Described second pressure sensor (6) is electrically connected with controller (7), for detecting the gravity that described loading space body (8) is born; Described controller (7) controls described on-off valve (3) action according to described gravity and lifting state.
9. dumping car according to claim 8, it is characterized in that, when described gravity reaches predetermined value and loading space body (8) is in non-lifting state, described controller (7) controls on-off valve (3) action and then is communicated with expanding sealing strips (4) by pressurizer (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510583332.1A CN105109394B (en) | 2015-09-14 | 2015-09-14 | Dumper and its loading space sealing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510583332.1A CN105109394B (en) | 2015-09-14 | 2015-09-14 | Dumper and its loading space sealing mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN105109394A true CN105109394A (en) | 2015-12-02 |
| CN105109394B CN105109394B (en) | 2018-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510583332.1A Active CN105109394B (en) | 2015-09-14 | 2015-09-14 | Dumper and its loading space sealing mechanism |
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| Country | Link |
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| CN (1) | CN105109394B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105539244A (en) * | 2015-12-29 | 2016-05-04 | 三一汽车制造有限公司 | Active inflatable sealing control system and dumper |
| CN114683990A (en) * | 2022-04-01 | 2022-07-01 | 山东港口科技集团日照有限公司 | Vehicle weighing locking joint control method and related device and system |
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| JPS5699830A (en) * | 1980-01-07 | 1981-08-11 | Kyokuto Kaihatsu Kogyo Co Ltd | Hinge device for dump truck |
| CN2052731U (en) * | 1989-09-09 | 1990-02-14 | 沈阳市环卫汽车改装厂 | Closed garbage self-unloading truck |
| CN2270797Y (en) * | 1996-09-18 | 1997-12-17 | 朱震宇 | Inflatable sealing strip for door and window |
| US20050040691A1 (en) * | 2003-06-09 | 2005-02-24 | Jones Donald R. | Dual transfer dump trailer set |
| CN102416854A (en) * | 2011-08-23 | 2012-04-18 | 中国北方车辆研究所 | Vehicle door edge inflatable seal system |
| CN203175345U (en) * | 2013-03-28 | 2013-09-04 | 唐山轨道客车有限责任公司 | Sealing device and sealing door |
| CN203603736U (en) * | 2013-12-09 | 2014-05-21 | 温州维科生物实验设备有限公司 | Inflation rubber strip for air-tight door |
| CN203638469U (en) * | 2013-10-25 | 2014-06-11 | 上海环境工程技术有限公司 | Pneumatic seal device for garbage container |
| CN205022427U (en) * | 2015-09-14 | 2016-02-10 | 湖南汽车制造有限责任公司 | Tipper and goods railway carriage or compartment sealing mechanism thereof |
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2015
- 2015-09-14 CN CN201510583332.1A patent/CN105109394B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5699830A (en) * | 1980-01-07 | 1981-08-11 | Kyokuto Kaihatsu Kogyo Co Ltd | Hinge device for dump truck |
| CN2052731U (en) * | 1989-09-09 | 1990-02-14 | 沈阳市环卫汽车改装厂 | Closed garbage self-unloading truck |
| CN2270797Y (en) * | 1996-09-18 | 1997-12-17 | 朱震宇 | Inflatable sealing strip for door and window |
| US20050040691A1 (en) * | 2003-06-09 | 2005-02-24 | Jones Donald R. | Dual transfer dump trailer set |
| CN102416854A (en) * | 2011-08-23 | 2012-04-18 | 中国北方车辆研究所 | Vehicle door edge inflatable seal system |
| CN203175345U (en) * | 2013-03-28 | 2013-09-04 | 唐山轨道客车有限责任公司 | Sealing device and sealing door |
| CN203638469U (en) * | 2013-10-25 | 2014-06-11 | 上海环境工程技术有限公司 | Pneumatic seal device for garbage container |
| CN203603736U (en) * | 2013-12-09 | 2014-05-21 | 温州维科生物实验设备有限公司 | Inflation rubber strip for air-tight door |
| CN205022427U (en) * | 2015-09-14 | 2016-02-10 | 湖南汽车制造有限责任公司 | Tipper and goods railway carriage or compartment sealing mechanism thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105539244A (en) * | 2015-12-29 | 2016-05-04 | 三一汽车制造有限公司 | Active inflatable sealing control system and dumper |
| CN114683990A (en) * | 2022-04-01 | 2022-07-01 | 山东港口科技集团日照有限公司 | Vehicle weighing locking joint control method and related device and system |
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| Publication number | Publication date |
|---|---|
| CN105109394B (en) | 2018-12-28 |
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Effective date of registration: 20190422 Address after: 422002 Shaoyang Shuangqing District, Shaoyang Avenue, Baoqing Industrial Concentration Zone, Sanyi Heavy Industry Area E Office Building, Shaoyang City, Hunan Province Patentee after: Sanyi Special Vehicle Co., Ltd. Address before: 422000 Wuli Brand, Shaoyang City, Hunan Province Patentee before: HUNAN AUTOMOBILE MANUFACTURING CO., LTD. |