CN111977580A - Aerial work platform weighing device and aerial work equipment - Google Patents
Aerial work platform weighing device and aerial work equipment Download PDFInfo
- Publication number
- CN111977580A CN111977580A CN202010875997.0A CN202010875997A CN111977580A CN 111977580 A CN111977580 A CN 111977580A CN 202010875997 A CN202010875997 A CN 202010875997A CN 111977580 A CN111977580 A CN 111977580A
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- weighing
- aerial work
- bracket
- weighing unit
- work platform
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F13/00—Common constructional features or accessories
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
- B66F17/006—Safety devices, e.g. for limiting or indicating lifting force for working platforms
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/52—Weighing apparatus combined with other objects, e.g. furniture
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- Engineering & Computer Science (AREA)
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- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
The invention relates to the field of aerial work equipment, and discloses an aerial work platform weighing device and aerial work equipment, wherein the aerial work platform weighing device comprises a transition seat (10) for connecting a swing arm, a bracket (20) for connecting a work platform, a weighing unit (30) and at least two connecting rods (50), each connecting rod spans between the transition seat and the bracket and is respectively connected with the transition seat and the bracket through a pin shaft (60), the weighing unit is arranged on one of the transition seat and the bracket, and a positioning structure (40) for positioning the weighing unit along the vertical direction with pretightening force is arranged on the other of the transition seat and the bracket. The invention can provide stable positioning in the vertical direction by the positioning structure and the weighing unit, and avoids the separation from the weighing unit and the collision therewith caused by the jumping of the bracket driven by the working platform, thereby ensuring the weighing precision and prolonging the service life.
Description
Technical Field
The invention relates to aerial work equipment, in particular to an aerial work platform weighing device and aerial work equipment.
Background
The arm type aerial work platform comprises an arm support, a work platform and the like, wherein the work platform comprises a transition seat, a platform, a bracket and the like which are used for connecting the arm support, and the load directly acts on the work platform, so that the stability of the whole machine is concerned, and the weighing system is more effective and accurate to arrange on the work platform close to the load. At present, the prior art has a plurality of technologies such as single-point weighing, multi-point weighing and the like. The multipoint weighing structure is complex, the cost is high, and the influence on the precision of the weighing is large during unbalance loading. In single point weighing, a sensor is typically mounted on the transition piece, which is in contact with the carriage to sense the load on the carriage. When there is the impact or the vehicle cross the pot hole bottom work platform, work platform can take place to beat, leads to the bracket to lead to the fact the impact to the sensor, influences sensor life-span and weighing accuracy, can directly cause the sensor to damage when serious.
Disclosure of Invention
The invention aims to solve the problems that single-point weighing affects weighing precision and the service life of a sensor due to the jumping of a working platform in the prior art, and provides a weighing device of an aerial work platform.
In order to achieve the above object, the present invention provides an aerial work platform weighing device, wherein the aerial work platform weighing device includes a transition seat for connecting a swing arm, a bracket for connecting a work platform, a weighing unit, and at least two connecting rods, each connecting rod spans between the transition seat and the bracket and is respectively connected to the transition seat and the bracket through a pin, the weighing unit is mounted on one of the transition seat and the bracket, and a positioning structure for positioning the weighing unit with a pre-tightening force in a vertical direction is disposed on the other of the transition seat and the bracket.
Preferably, the positioning structure comprises an upper positioning piece and a lower positioning piece which are respectively positioned on the upper side and the lower side of the weighing unit, and the upper positioning piece and the lower positioning piece are arranged to respectively apply pretightening force to the weighing unit from the upper side and the lower side to position the weighing unit.
Preferably, the weighing unit and the upper positioning member are arranged to be in point contact at all times.
Preferably, one of the weighing unit and the upper positioning member includes a spherical portion, and the other includes a planar portion, and the spherical portion and the planar portion are in contact to form a point contact.
Preferably, the upper positioning piece is fixed to one of the transition seat and the bracket and comprises an upper positioning surface used for pressing the weighing unit, the lower positioning piece is fixed to one of the transition seat and the bracket and is provided with a lower positioning surface used for supporting the weighing unit, and the weighing unit is provided with an adjusting piece capable of adjusting the length in the vertical direction so that the upper side and the lower side of the weighing unit are respectively abutted to the upper positioning surface and the lower positioning surface.
Preferably, the weighing unit includes a main body having a sensor, the adjusting member is provided on the main body and upwardly abuts against the upper positioning surface, an upper end of the adjusting member has a spherical surface portion, the upper positioning surface includes a planar portion, and the spherical surface portion and the planar portion are in contact to form a point contact.
Preferably, the adjusting piece is a ball stud, and an adjusting nut matched with the ball stud is installed on the main body.
Preferably, the upper positioning piece and the lower positioning piece are arranged in the middle of the transition seat or the bracket in the vertical direction; and/or the upper positioning piece and the lower positioning piece are both horizontally extending plate-shaped pieces.
The invention also provides aerial work equipment, wherein the aerial work equipment comprises the aerial work platform weighing device.
Preferably, the aerial work device comprises an alarm unit electrically connected with the weighing unit.
Through the technical scheme, the bracket transmits force to the transition seat through the connecting rod and the positioning structure, the positioning structure provides positioning from the weighing unit in the vertical direction through the pretightening force, namely the weighing unit is stably positioned from the upper side and the lower side, so that the weighing unit is kept static relative to the bracket, the phenomenon that the working platform drives the bracket to jump to cause the collision with the weighing unit, which is separated from the weighing unit and is generated therewith, is avoided, and the weighing precision and the service life are ensured.
Drawings
FIG. 1 is a perspective view of one embodiment of an aerial platform weighing apparatus of the present invention;
fig. 2 is a longitudinal cross-section of the mid-width of the transition seat and bracket connection of fig. 1.
Description of the reference numerals
10-transition seat, 20-bracket, 30-weighing unit, 31-adjusting piece, 32-main body, 33-adjusting nut, 40-positioning structure, 41-upper positioning piece, 42-lower positioning piece, 50-connecting rod, 60-pin shaft and 70-fastening piece.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
In the present invention, the use of directional terms such as "upper, lower, left, right" generally means upper, lower, left, right as viewed with reference to the accompanying drawings, unless otherwise specified; "inner and outer" refer to the inner and outer relative to the profile of the components themselves. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
According to one aspect of the invention, the aerial work platform weighing device comprises a transition seat 10 for connecting a swing arm, a bracket 20 for connecting a work platform, a weighing unit 30 and at least two connecting rods 50, wherein each connecting rod 50 spans between the transition seat 10 and the bracket 20 and is respectively connected with the transition seat 10 and the bracket 20 through a pin shaft 60, the weighing unit 30 is installed on one of the transition seat 10 and the bracket 20, and a positioning structure 40 for positioning the weighing unit 30 with pretightening force in a vertical direction is arranged on the other of the transition seat 10 and the bracket 20.
By using the aerial work platform weighing device, the bracket 20 transmits force to the transition seat 10 through the connecting rod 50 and the positioning structure 40, and the positioning structure 40 positions the weighing unit 30 in the vertical direction by pretightening force, namely, the weighing unit 30 is stably positioned from the upper side and the lower side, so that the weighing unit 30 is kept static relative to the bracket 20, the phenomenon that the working platform drives the bracket 20 to jump to cause separation from the weighing unit 30 and collision therewith is avoided, the weighing precision can be ensured, and the service life can be prolonged.
Wherein, the positioning structure 40 positions the weighing unit 30 with a pre-tightening force, which can provide precise positioning of the weighing unit 30 in a vertical direction, thereby ensuring that there is no relative vertical movement and resulting collision of the weighing unit 30 with respect to the bracket 20. The locating structure 40 may take any suitable form, and may for example be a locating slot capable of holding the weighing cell 30.
In the embodiment shown in fig. 2, to facilitate the positioning of the positioning structure 40 and the weighing cell 30, the positioning structure 40 may include an upper positioning member 41 and a lower positioning member 42 respectively located at the upper side and the lower side of the weighing cell 30, and the upper positioning member 41 and the lower positioning member 42 are configured to apply pre-tightening force to the weighing cell 30 from the upper side and the lower side to position the weighing cell 30. The weight unit 30 is pressed between the upper positioning piece 41 and the lower positioning piece 42 to realize pre-tightening positioning by using the upper positioning piece 41 and the lower positioning piece 42 which are arranged up and down. For example, the upper positioning member 41 and/or the lower positioning member 42 may be configured to be mounted to be adjustable in position in a vertical direction with respect to the pallet 20 or the transition piece 10, so that the weighing unit 30 may be pressed between the upper positioning member 41 and the lower positioning member 42 by adjusting the vertical position of the upper positioning member 41 and/or the lower positioning member 42 after the weighing unit 30 is placed between the upper positioning member 41 and the lower positioning member 42.
Preferably, the weighing unit 30 and the upper positioning member 41 may be set to be in initial and final contact, that is, whether the upper positioning member 41 is inclined due to the offset load of the working platform, the weighing unit 30 and the upper positioning member 41 are always in a point contact state, so that the load transmitted by the upper positioning member 41 can be sensed more accurately by the weighing unit 30.
To facilitate the point contact, one of the weighing cell 30 and the upper positioning member 41 may include a spherical portion, and the other may include a planar portion, and the spherical portion and the planar portion contact to form the point contact.
In order to realize that the weighing unit 30 is pre-positioned between the upper positioning member 41 and the lower positioning member 42, in a preferred embodiment of the present invention, the upper positioning member 41 is fixed to one of the transition seat 10 and the bracket 20 and includes an upper positioning surface for pressing the weighing unit 30, the lower positioning member 42 is fixed to the one of the transition seat 10 and the bracket 20 and has a lower positioning surface for supporting the weighing unit 30, and the weighing unit 30 is provided with an adjusting member 32 capable of adjusting a length in a vertical direction such that an upper side and a lower side of the weighing unit 30 abut against the upper positioning surface and the lower positioning surface, respectively.
From this, when the location weighing unit 30, can insert weighing unit 30 between locating surface and the lower locating surface, then adjust the length of regulating part 32 for the length of weighing unit 30's vertical direction increases to can about both sides respectively the butt go up locating surface and lower locating surface, thereby accomplish pretension location. In addition, the adjusting function of the adjusting piece 32 can ensure that weighing units 30 with different specifications can be matched and installed between the upper positioning surface and the lower positioning surface.
The weighing cell 30 may be mounted to the transition piece 10 or the bracket 20 by any suitable means, for example, the weighing cell 30 comprises a body 31 with a sensor, the body 31 being secured to the transition piece 10 or the bracket 20 by fasteners 70. Wherein the bottom surface of the main body 31 may have a flat surface portion that is attached to the lower positioning surface. The regulating member 32 may extend upward from the top of the main body 31 such that a top end of the regulating member 32 to a plane portion of the bottom surface of the main body 31 defines the height of the weighing cell 30.
In order to prevent the upper positioning member 41 from tilting due to unbalance loading and affecting the weighing accuracy, it is preferable that the adjusting member 32 is disposed on the main body 31 and upwardly abuts against the upper positioning surface, the upper end of the adjusting member 32 has a spherical surface portion, and the upper positioning surface includes a planar portion, and the spherical surface portion contacts with the planar portion to form a point contact. Therefore, no matter whether the upper positioning piece 41 inclines due to the offset load of the working platform, the weighing unit 30 and the upper positioning piece 41 are always in a point contact state, so that the load transmitted by the upper positioning piece 41 can be more accurately sensed by the weighing unit 30.
In addition, in the present invention, the adjustment member 32 may be adjusted in length in the vertical direction by various suitable structures. For the sake of simplifying the structure, the adjusting member 32 may be a bolt, and the main body 31 is provided with an adjusting nut 33 engaged with the bolt. Wherein the bolt may cooperate with the adjusting nut 33 to form a lead screw-nut mechanism, such that the bolt may be axially moved relative to the adjusting nut 33 by operating the adjusting nut 33 to adjust the length of the protruding adjustment member 32 from the main body 31, i.e. to adjust the height of the weighing unit 30 in the vertical direction. Preferably, as shown in fig. 2, the adjusting member 32 may be a ball stud, a ball end of the ball stud may be used for point contact with the upper locating surface, and a screw portion may cooperate with the adjusting nut 33 to form a lead screw-nut mechanism.
In addition, in order to stably transmit the load, the upper positioning member 41 and the lower positioning member 42 are disposed at the middle of the vertical direction of the carriage 20, so that the weighing unit 30 is positioned at the middle of the transition seat 10 or the carriage 20. In addition, in order to form the upper and lower positioning surfaces and simplify the structure, the upper and lower positioning members 41 and 42 may be each a plate-shaped member extending horizontally.
In addition, as shown in fig. 2, the aerial work platform weighing device includes at least two connecting rods 50, and each connecting rod 50 spans between the transition seat 10 and the bracket 20 and is connected with the transition seat 10 and the bracket 20 through a pin 60. Thus, a four-bar linkage is formed between any two of the links 50, the transition seat 10 and the bracket 20, and when the bracket 20 is loaded, force can be always transmitted to the transition seat 10 and the weighing cell 30 in the vertical direction.
In one embodiment of the present invention, as shown in fig. 2, the weighing unit 30 is mounted on the transition seat 10, the upper positioning member 41 and the lower positioning member 42 are mounted on the carriage 20, and the transition seat 10 and the carriage 20 form a four-bar linkage by an upper and a lower two-bar linkage 50. When the bracket 20 bears load, the load is transmitted to the transition seat 10 through the connecting rod 50, the upper positioning piece 41 and the lower positioning piece 42, and the weighing unit 30 is always kept static relative to the bracket 20 under the pre-tightening positioning action of the upper positioning piece 41 and the lower positioning piece 42, so that accurate weighing can be realized, and damage caused by collision can be avoided.
It is understood that in other embodiments, the weighing unit 30 may be installed on the bracket 20, the upper positioning member 41 and the lower positioning member 42 are installed on the transition seat 10, and the weighing unit 30 is still relative to the bracket 20 under the pre-tightening positioning action of the upper positioning member 41 and the lower positioning member 42, so that accurate weighing is achieved and damage caused by collision is avoided.
The invention also provides aerial work equipment, wherein the aerial work equipment comprises the aerial work platform weighing device. As shown in fig. 1, the side where the transition seat 10 is located is an arm support side, the side where the bracket 20 is located is a work platform side, the transition seat 10 is used for connecting an arm support, and the bracket 20 is used for connecting a work platform, so that when the work platform is loaded, a force can be transmitted to the transition seat 10 through the bracket 20 via the connecting rod 50 and the positioning structure 40. The weighing unit 30 is positioned from the vertical direction through the positioning structure 40 by pretightening force, namely the weighing unit 30 is stably positioned from the upper side and the lower side, so that the weighing unit 30 keeps static relative to the bracket 20, the phenomenon that the working platform drives the bracket 20 to jump to cause the deviation from the weighing unit 30 and the collision therewith is avoided, and the weighing precision and the service life are ensured.
Wherein the aerial work equipment may include an alarm unit electrically connected to the weighing unit 30 to alarm when the weighing value of the carrying unit 30 reaches an upper limit.
The aerial work equipment of the invention can be various specific equipment with a working platform, such as a fire truck, an aerial work truck and the like.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications can be made to the technical solution of the invention. The invention includes the combination of the individual features in any suitable manner. The invention is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.
Claims (10)
1. The weighing device for the aerial work platform is characterized by comprising a transition seat (10) used for being connected with a swing arm, a bracket (20) used for being connected with a work platform, a weighing unit (30) and at least two connecting rods (50), wherein each connecting rod (50) spans between the transition seat (10) and the bracket (20) and is respectively connected with the transition seat (10) and the bracket (20) through a pin shaft (60), the weighing unit (30) is installed on one of the transition seat (10) and the bracket (20), and a positioning structure (40) used for positioning the weighing unit (30) with pretightening force in the vertical direction is arranged on the other one of the transition seat (10) and the bracket (20).
2. The aerial work platform weighing device of claim 1, wherein the locating structure comprises an upper locating member (41) and a lower locating member (42) located on an upper side and a lower side of the weighing cell (30), respectively, the upper locating member (41) and the lower locating member (42) being arranged to apply a pre-load to the weighing cell (30) from the upper side and the lower side, respectively, to locate the weighing cell (30).
3. Aerial work platform weighing device according to claim 2, characterised in that the weighing unit (30) and the upper positioning element (41) are arranged in a point contact at all times.
4. The aerial work platform weighing device of claim 3, wherein one of the weighing cell (30) and the upper locating member (41) comprises a spherical portion and the other comprises a planar portion, the spherical portion and the planar portion contacting to form a point contact.
5. Aerial work platform weighing device according to claim 2, characterized in that said upper positioning element (41) is fixed to one of said transition seat (10) and said carriage (20) and comprises an upper positioning surface for pressing said weighing unit (30), said lower positioning element (42) is fixed to said one of said transition seat (10) and said carriage (20) and has a lower positioning surface for supporting said weighing unit (30), said weighing unit (30) being provided with an adjustment element (32) of adjustable length in a vertical direction, so that the upper side and the lower side of said weighing unit (30) abut respectively against said upper positioning surface and said lower positioning surface.
6. The aerial work platform weighing device of claim 5, wherein the weighing unit (30) comprises a main body (31) having a sensor, the adjustment member (32) is disposed on the main body (31) and upwardly abuts the upper locating surface, the upper end of the adjustment member (32) has a spherical surface portion, the upper locating surface comprises a planar portion, and the spherical surface portion and the planar portion contact to form a point contact.
7. The aerial work platform weighing device of claim 6, wherein the adjustment member (32) is a ball stud, and the main body (31) is provided with an adjustment nut (33) which is engaged with the ball stud.
8. The aerial work platform weighing device according to any one of claims 2 to 7, wherein the upper locating member (41) and the lower locating member (42) are arranged in the middle of the transition seat (10) or the carriage (20) in the vertical direction; and/or the upper positioning piece (41) and the lower positioning piece (42) are both horizontally extending plate-shaped pieces.
9. An aerial work apparatus comprising an aerial work platform weighing device as claimed in any one of claims 1 to 8.
10. Aerial work device as claimed in claim 9, characterized in that it comprises an alarm unit electrically connected to the weighing unit (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010875997.0A CN111977580A (en) | 2020-08-25 | 2020-08-25 | Aerial work platform weighing device and aerial work equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010875997.0A CN111977580A (en) | 2020-08-25 | 2020-08-25 | Aerial work platform weighing device and aerial work equipment |
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| Publication Number | Publication Date |
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| CN111977580A true CN111977580A (en) | 2020-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010875997.0A Pending CN111977580A (en) | 2020-08-25 | 2020-08-25 | Aerial work platform weighing device and aerial work equipment |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017177219A1 (en) * | 2016-04-08 | 2017-10-12 | Jlg Industries, Inc. | Platform load sensing system |
| CN109520606A (en) * | 2018-12-07 | 2019-03-26 | 中联重科股份有限公司 | Weighing device and weighing method |
| CN211035114U (en) * | 2019-09-02 | 2020-07-17 | 临工集团济南重机有限公司 | Weighing structure of aerial work platform and aerial work platform |
| CN211035116U (en) * | 2019-09-02 | 2020-07-17 | 临工集团济南重机有限公司 | A weighing structure of an aerial work platform and the aerial work platform |
| CN212450539U (en) * | 2020-08-25 | 2021-02-02 | 湖南中联重科智能高空作业机械有限公司 | Aerial work platform weighing device and aerial work equipment |
-
2020
- 2020-08-25 CN CN202010875997.0A patent/CN111977580A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017177219A1 (en) * | 2016-04-08 | 2017-10-12 | Jlg Industries, Inc. | Platform load sensing system |
| CN109520606A (en) * | 2018-12-07 | 2019-03-26 | 中联重科股份有限公司 | Weighing device and weighing method |
| CN211035114U (en) * | 2019-09-02 | 2020-07-17 | 临工集团济南重机有限公司 | Weighing structure of aerial work platform and aerial work platform |
| CN211035116U (en) * | 2019-09-02 | 2020-07-17 | 临工集团济南重机有限公司 | A weighing structure of an aerial work platform and the aerial work platform |
| CN212450539U (en) * | 2020-08-25 | 2021-02-02 | 湖南中联重科智能高空作业机械有限公司 | Aerial work platform weighing device and aerial work equipment |
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Effective date of registration: 20201229 Address after: 410010 room 4110, 4th floor, office building, 677 Lugu Avenue, high tech Development Zone, Changsha City, Hunan Province Applicant after: Hunan Zoomlion intelligent aerial work machinery Co.,Ltd. Address before: 410013 No. 361 South silver basin, Changsha, Hunan, Yuelu District Applicant before: ZOOMLION HEAVY INDUSTRY SCIENCE&TECHNOLOGY Co.,Ltd. |