CN110812743A - Rotating wheel device, rotating wheel device mounting structure, telescopic arm and fire fighting truck - Google Patents
Rotating wheel device, rotating wheel device mounting structure, telescopic arm and fire fighting truck Download PDFInfo
- Publication number
- CN110812743A CN110812743A CN201911096124.3A CN201911096124A CN110812743A CN 110812743 A CN110812743 A CN 110812743A CN 201911096124 A CN201911096124 A CN 201911096124A CN 110812743 A CN110812743 A CN 110812743A
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- Prior art keywords
- rotating wheel
- shaft
- space
- wall
- wheel device
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000009434 installation Methods 0.000 claims abstract description 34
- 230000007246 mechanism Effects 0.000 claims description 20
- 230000000903 blocking effect Effects 0.000 claims description 18
- 239000003973 paint Substances 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 239000000428 dust Substances 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C27/00—Fire-fighting land vehicles
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/28—Accessories for delivery devices, e.g. supports
-
- 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
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
- B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
Abstract
The invention relates to the field of transmission equipment, engineering machinery and fire fighting equipment, in particular to a rotating wheel device, a rotating wheel device mounting structure, a telescopic boom and a fire fighting truck. A swivel wheel apparatus comprising a swivel wheel and a fixed shaft for being disposed on an installation base having an installation space, the swivel wheel being fitted over the fixed shaft and being rotatable thereon, wherein the fixed shaft comprises a shaft end surface for being installed on an inside surface of a space wall of the installation space. Meanwhile, the invention also provides a rotating wheel mounting structure, namely a telescopic arm, wherein the rotating wheel device is arranged inside the wall cylinder of the telescopic arm through the rotating wheel mounting structure, so that the phenomenon that the rotating wheel device is scraped and rubbed with the outer side of the wall cylinder during rope movement, the rustproof paint on the outer side of the wall cylinder is damaged, and the outer surface of the wall cylinder is smeared at the same time is prevented. Meanwhile, the invention provides the fire fighting truck which has the advantages of cleanness, tidiness and good maintainability due to the use of the telescopic arm for arranging the pulley block in the wall cylinder.
Description
Technical Field
The invention relates to the field of transmission equipment, engineering machinery and fire fighting equipment, in particular to a rotating wheel device, a rotating wheel device mounting structure, a telescopic boom and a fire fighting truck.
Background
The existing elevating fire truck or crane engineering machinery is provided with a telescopic arm, and the telescopic arm realizes the control of the length of the telescopic arm by a pulley block or a chain wheel. As shown in fig. 3, most of the existing pulley mechanisms are formed by fixing a rotating shaft between two fixed plates and then arranging a pulley with a groove on the rotating shaft to rotate around the shaft. This kind of structure needs all to be provided with the fixed plate in pulley both sides and can realize its function. Therefore, the pulley mechanism cannot be arranged on the inner side of the wall cylinder of the telescopic arm, and only can be arranged on the outer side of the arm support, mainly at the head and tail positions, so that the occupied space of the arm support is large, and the stacking effect and the overall weight of the arm support are influenced. Moreover, because the existing pulley mechanism can only be arranged outside the wall cylinder, a chain or a rope matched with the pulley mechanism can only be arranged outside the wall cylinder, and the chain or the rope can be scraped and rubbed with the outer side of the wall cylinder when the rope moves, so that the antirust paint on the outer side of the wall cylinder is damaged and the outer surface of the wall cylinder is smeared; and the whole pulley block is exposed for a long time and is easy to be influenced by dust to generate oil stains to influence lubrication.
Disclosure of Invention
The invention provides a rotating wheel device, a rotating wheel device mounting structure, a telescopic arm and a fire engine, which are used for solving the problem that the existing pulley mechanism for driving the telescopic arm to move cannot be mounted in narrow spaces such as the inner part of a wall cylinder and can only be mounted on the outer side of the wall cylinder, so that a rope matched with the pulley mechanism is exposed outside and scratches the wall cylinder of the telescopic arm to be smeared, and the attractiveness and maintainability of the vehicle are influenced.
In order to achieve the above object, an aspect of the present invention provides a rotary wheel apparatus including a rotary wheel and a fixed shaft for being disposed on an installation base having an installation space, the rotary wheel being fitted over and rotatable on the fixed shaft, wherein the fixed shaft includes a shaft end surface for being installed on an inside surface of a space wall of the installation space.
Preferably, at least one side of the fixed shaft is provided with a blocking part capable of blocking the rotating wheel from moving in the axial direction of the fixed shaft.
Preferably, the blocking part includes a stopper formed at one side of the rotary wheel and integrally formed with the fixed shaft, and a blocking sleeve formed at the other side of the rotary wheel.
Preferably, the axial end face is formed with an axially extending pin bore.
Preferably, the swivel wheel apparatus further comprises a pin shaft for passing through the space wall from the outside of the installation space and capable of being fitted in the pin shaft hole.
Preferably, the rotating wheel is mounted on the fixed shaft through a self-lubricating bearing.
A second aspect of the present invention provides a turning wheel apparatus mounting structure including a mounting base having a mounting space and the turning wheel apparatus provided by the present invention, wherein the shaft end surface is mounted on an inside surface of a space wall of the mounting space.
Preferably, in the case where the rotating wheel means includes a pin shaft hole and a pin shaft, the pin shaft is extended from the outside of the installation space through the space wall and fitted in the pin shaft hole.
The third aspect of the invention provides a telescopic boom, which comprises a plurality of wall cylinders and a pulley mechanism for driving the telescopic boom to move, wherein the pulley mechanism is a rotating wheel device mounting structure provided by the invention; the shaft end surface of the rotating wheel device is arranged on the inner surface of the wall cylinder, and the cylinder wall of the wall cylinder is an installation foundation of the rotating wheel device installation structure.
The invention provides a fire fighting truck, which comprises the telescopic arm provided by the invention.
Through the technical scheme, the fixing shaft is arranged on the space wall with the installation space, and the shaft end surface of the fixing shaft is arranged on the inner surface of the space wall of the installation space; the rotatable cover of wheel will rotate again is established on the fixed axle, if will rotate the wheel and set up the purpose that the pulley just can realize setting up the pulley in narrow and small space for the sprocket or band pulley just so likewise need replace the kind of rotating the wheel can. The swivel wheel device can be installed in a small space, for example, inside a wall cylinder of a telescopic boom, by means of the swivel wheel device installation structure.
By replacing the pulley mechanism with the rotating wheel device mounting structure of the invention, the rotating wheel device can be arranged inside the cylinder body of the wall cylinder, and meanwhile, the rope matched with the rotating wheel device is also arranged inside the cylinder body. The problem that the rope is scraped and rubbed with the outer side of the wall cylinder when the rope moves is avoided, the antirust paint on the outer side of the wall cylinder is damaged, and the outer surface of the wall cylinder is smeared at the same time; the rotating wheel device is arranged in the cylinder body, so that the rotating wheel device is not easily affected by dust to generate oil stains to affect lubrication, and the maintenance period of the pulley block is prolonged.
Meanwhile, the invention also provides a fire fighting truck which comprises the telescopic boom. The fire engine uses the telescopic arm, and the pulley blocks are arranged inside the telescopic arm, so that the fire engine is cleaner and tidier.
Drawings
FIG. 1 is a schematic view of a portion of a rotating wheel assembly according to the present invention;
FIG. 2 is a schematic view of the structure of the mounting structure of the swivel wheel assembly of the present invention;
fig. 3 is a schematic view of a pulley mechanism of the prior art;
FIG. 4 is a cross-sectional view of the telescopic arm of the present invention, parallel to the telescopic direction of the telescopic arm;
fig. 5 is a cross-sectional view of the telescopic arm of the present invention, perpendicular to the telescopic direction of the telescopic arm.
Description of the reference numerals
10-rotating wheel device 11-rotating wheel
12-fixed axis 13-stop
14-self-lubricating bearing 15-retaining sleeve
16-pin shaft 17-shaft end surface
18-Pin hole 20-rope
30-wall cylinder
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, unless otherwise specified, "inside and outside" refer to the inside and outside relation of the outline of the device itself.
The invention provides a rotating wheel device 10 for solving the problem that the existing pulley mechanism is difficult to install and arrange in a narrow space such as a wall cylinder 30, and the like, as shown in fig. 1 and fig. 2, the rotating wheel device comprises a rotating wheel 11 and a fixed shaft 12 arranged on an installation base with an installation space, wherein the rotating wheel 11 is sleeved on the fixed shaft 12 and can rotate on the fixed shaft 12, and the fixed shaft 12 comprises a shaft end surface 17 arranged on the inner side surface of a space wall of the installation space.
The rotating wheel 11 is a rotating body which needs to rotate around a fixed shaft, and in the present invention, the rotating wheel 11 is a type of device on which a flexible rope 20 is wound, and specifically, may be a pulley, a chain wheel, a belt wheel, or the like. The rotating wheel 11 needs to rotate around a fixed shaft, so the invention also comprises a fixed shaft 12. One of the side surfaces of the stationary shaft 12 is a shaft end surface 17, by which the stationary shaft 12 can be mounted on a space wall; the wall in this space is in fact the installation base. Wherein the mounting base is provided with a certain mounting space for accommodating the rotary wheel apparatus 10, and the rotary wheel apparatus 10 is arranged in the mounting space of the mounting base by arranging the shaft end surface 17 on the inner surface of the space wall of the mounting space. Wherein the installation space may be a space surrounding or semi-surrounding the turning wheel device 10, so that the space wall has a bend towards the turning wheel device 10 or the surroundings of the turning wheel device 10 have other facilities located near the space wall on the same side as the turning wheel device 10. As shown in fig. 1, the shaft end surface 17 preferably has a threaded hole, and the stationary shaft 12 can be mounted on a space wall by means of a bolt, and the stationary shaft 12 can be permanently fixed to the space wall by welding.
The rotatable wheel 11 has a mounting hole along the axial direction of the rotatable wheel 11, and the stationary shaft 12 can be disposed in the mounting hole of the rotatable wheel 11, and the rotatable wheel 11 can rotate on the stationary shaft 12 around the stationary shaft 12. Preferably, a bearing is provided between the rotating wheel 11 and the stationary shaft 12, and the rotating wheel 11 and the stationary shaft 12 are connected by the bearing, and further preferably, the rotating wheel 11 is mounted on the stationary shaft 12 by a self-lubricating bearing 14. The rotating wheel 11 and the self-lubricating bearing 14 are assembled in an interference fit mode, and the self-lubricating bearing 14 and the fixed shaft 12 are assembled in a clearance fit mode.
Through the technical scheme, the fixed shaft 12 is installed on a space wall with an installation space, and the shaft end surface 17 of the fixed shaft 12 is arranged on the inner surface of the space wall of the installation space; the rotatable cover of wheel 11 will be rotated again and establish on fixed axle 12, if set up wheel 11 for the pulley can realize setting up the purpose of pulley in narrow and small space, just so need to replace the kind of wheel 11 to sprocket or band pulley just so again.
In order to prevent the rotating wheel 11 from moving in the axial direction of the fixed shaft 12 when rotating on the fixed shaft 12, a blocking portion capable of blocking the rotating wheel 11 from moving in the axial direction of the fixed shaft 12 is provided on at least one side of the fixed shaft 12. Preferably, blocking parts are arranged on both sides of the rotating wheel 11; if the blocking part is arranged on only one side and the other side is not arranged, the blocking part is arranged on one side far away from the shaft end surface 17 of the fixed shaft 12, the rotating wheel is positioned by utilizing a space wall arranged on the shaft end surface 17, and the blocking part is adopted on the other side.
Preferably, the blocking portion includes a stopper 13 formed integrally with the fixed shaft 12 at one side of the rotating wheel 11 and a sleeve 15 at the other side of the rotating wheel 11. The stopper 13 is arranged on one side of the shaft end surface 17 far away from the fixed shaft 12, the stopper 13 is fixedly connected with the fixed shaft 12, and further, the stopper 13 and the fixed shaft 12 are preferably directly and integrally formed; the maximum distance of the stopper 13 from the axis of the stationary shaft 12 is greater than the radius of the stationary shaft 12 so that the stopper 13 protrudes from the cylindrical side surface of the stationary shaft 12, and it is further preferable that the stopper 13 is referred to as a shoulder of the stationary shaft 12 on the ring-shaped directly molded stationary shaft 12 as shown in fig. 2.
The blocking part on the other side is a blocking sleeve 15, the blocking sleeve 15 is a circular ring, and the blocking sleeve 15 is located between the rotating wheel 11 and the space wall after installation is completed and used for positioning the rotating wheel 11 and avoiding the rotating wheel 11 from moving or rubbing against the space wall. The rotating wheel 11 is preferably mounted on a fixed shaft 12 by means of a bearing, the stop enabling the positioning of the bearing, the other side of which is positioned by means of a shoulder, i.e. a stop 13
As shown in fig. 2, since it is difficult to bear a large load by fixing the fixed shaft 12 to a space wall only by bolts, the wheel rotating apparatus 10 of the present invention further includes a pin shaft 16, and a pin shaft hole 18 extending in an axial direction is formed in a shaft end surface 17. The pin shaft 16 penetrates through the space wall from the outside of the installation space and can be matched in the pin shaft hole 18, the pin shaft 16 is fixedly connected with the space wall, the fixed shaft 12 is sleeved on the pin shaft 16, and the pin shaft 16 is used for supporting the fixed shaft 12 and can apply larger load on the fixed shaft 12; the stationary shaft 12 is over-fitted with the pin 16. The pin 16 may be welded directly to the space wall or may be formed integrally with the space wall, such as by casting or forging.
Another aspect of the present invention also provides a swivel wheel apparatus mounting structure characterized by comprising a mounting base having a mounting space, and the swivel wheel apparatus 10 of the present invention, wherein the shaft end surface 17 is mounted on an inside surface of a space wall of the mounting space. In the case where the swivel wheel assembly 10 includes the pin hole 18 and the pin 16, the pin 16 protrudes from the outside of the installation space through the wall of the space and fits in the pin hole 18. The body of the mounting base is the wall of the space of the swivel wheel assembly 10. Preferably, the fixing shaft 12 is detachably fixed to the fixing plate by a bolt.
In this way, the swivel wheel apparatus 10 of the present invention is mounted on the mounting base having the mounting space, and the swivel wheel 11 is disposed in the mounting space of the mounting base.
Meanwhile, the invention also provides a telescopic boom, which comprises a plurality of wall cylinders 30 and a pulley mechanism for driving the telescopic boom to move, and is characterized in that the pulley mechanism is a mounting structure of the rotating wheel device provided by the invention; the shaft end surface 17 of the rotating wheel device 10 is installed on the inner surface of the wall cylinder 30, and the cylinder wall of the wall cylinder 30 is an installation base of the rotating wheel device installation structure.
As shown in fig. 4 and 5, the wall tube 30 of the telescopic arm is a hollow tube structure, and has a certain space for accommodating other tube walls, and a certain gap is formed between the tube walls, so that the rotating wheel device 10 of the present invention is just arranged in the wall tube 30 of the telescopic arm at the gap between the two wall tubes 30 through the rotating wheel device mounting structure of the present invention. The wall cylinder 30 has a cylinder wall serving as an installation base, and a hollow interior defining an installation space for installing the rotary wheel apparatus 10. The fixed shaft 12 is fixedly installed on the inner side of the wall cylinder 30, and the pin 16 passes through the wall cylinder 30 and protrudes to the inner side of the wall cylinder 30 through the outer side of the wall cylinder and is matched with the installation hole on the fixed shaft 12.
By replacing the pulley mechanism with the turning wheel device mounting structure of the present invention, it is possible to dispose the turning wheel device 10, i.e., the pulley mechanism, inside the barrel of the wall cylinder 30, while the rope 20 engaged with the pulley mechanism, i.e., the turning wheel device 10, is also disposed inside the barrel. The situation that the rope 20 is scratched and rubbed with the outer side of the wall cylinder 30 when moving is avoided, the antirust paint on the outer side of the wall cylinder 30 is damaged, and the outer surface of the wall cylinder 30 is smeared at the same time; the pulley mechanism is arranged in the cylinder body, so that the pulley mechanism is not easily affected by dust to produce oil stain to affect lubrication, and the maintenance period of the pulley block is prolonged.
Meanwhile, the invention also provides a fire fighting truck which comprises the telescopic boom. The fire engine uses the telescopic arm, and the pulley blocks are arranged inside the telescopic arm, so that the fire engine is cleaner and tidier.
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, numerous simple modifications can be made to the technical solution of the invention, including combinations of the specific features in any suitable way, and the invention will not be further described in relation to the various possible combinations 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. A rotatable wheel device is characterized by comprising a rotatable wheel (11) and a fixed shaft arranged on an installation base with an installation space, wherein the rotatable wheel (11) is sleeved on the fixed shaft (12) and can rotate on the fixed shaft (12), and the fixed shaft (12) comprises a shaft end surface (17) arranged on the inner side surface of a space wall of the installation space.
2. The rotating wheel device according to claim 1, characterized in that at least one side of the stationary shaft (12) is provided with a blocking portion capable of blocking the moving of the rotating wheel (11) in the axial direction of the stationary shaft (12).
3. Rotating wheel device (10) according to claim 3, characterized in that the blocking part comprises a stop (13) on one side of the rotating wheel (11) and formed integrally with the fixed axle and a stop collar (15) on the other side of the rotating wheel (11).
4. Rotor wheel unit according to claim 1, characterised in that the shaft end face (17) is formed with an axially extending pin shaft bore (18).
5. Rotatable wheel arrangement according to claim 4, characterized in that the rotatable wheel arrangement (10) further comprises a pin (16), which pin (16) is intended to pass through a space wall from outside the installation space and can be fitted in a pin hole (18).
6. Rotating wheel device according to claim 1, characterized in that the rotating wheel (11) is mounted on the stationary shaft (12) by means of self-lubricating bearings (14).
7. A swivel wheel assembly mounting structure, comprising a mounting base having a mounting space and a swivel wheel assembly (10) according to any one of claims 1-5, wherein the shaft end surface (17) is mounted on an inside surface of a space wall of the mounting space.
8. The swivel wheel assembly mounting arrangement according to claim 7, characterized in that in case the swivel wheel assembly (10) comprises a pin shaft hole (18) and a pin shaft (16), the pin shaft (16) protrudes from the outside of the mounting space through the wall of the space and fits into the pin shaft hole (18).
9. A telescopic boom comprising a plurality of wall cylinders (30) and a pulley mechanism for driving the telescopic boom to move, wherein the pulley mechanism is a mounting structure of a swivel wheel assembly (10) according to any one of claims 7 to 8; the shaft end surface (17) of the rotating wheel device (10) is installed on the inner surface of the wall cylinder (30), and the cylinder wall of the wall cylinder (30) is an installation foundation of the installation structure of the rotating wheel device (10).
10. A fire fighting vehicle characterized in that it comprises a telescopic boom according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911096124.3A CN110812743A (en) | 2019-11-11 | 2019-11-11 | Rotating wheel device, rotating wheel device mounting structure, telescopic arm and fire fighting truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911096124.3A CN110812743A (en) | 2019-11-11 | 2019-11-11 | Rotating wheel device, rotating wheel device mounting structure, telescopic arm and fire fighting truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110812743A true CN110812743A (en) | 2020-02-21 |
Family
ID=69554018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911096124.3A Pending CN110812743A (en) | 2019-11-11 | 2019-11-11 | Rotating wheel device, rotating wheel device mounting structure, telescopic arm and fire fighting truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110812743A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102910542A (en) * | 2012-10-26 | 2013-02-06 | 武汉船用机械有限责任公司 | Telescopic boom of marine crane |
| CN205616477U (en) * | 2015-12-29 | 2016-10-05 | 徐州重型机械有限公司 | Novel pulley mounting fixed knot constructs for jib loading boom |
| CN205892574U (en) * | 2016-07-20 | 2017-01-18 | 徐州重型机械有限公司 | Arm festival structure, jib loading boom and hoist |
| JP2019073391A (en) * | 2017-10-19 | 2019-05-16 | 株式会社アイチコーポレーション | Telescopic boom |
| CN211383579U (en) * | 2019-11-11 | 2020-09-01 | 长沙中联消防机械有限公司 | Rotating wheel device, rotating wheel device mounting structure, telescopic arm and fire fighting truck |
-
2019
- 2019-11-11 CN CN201911096124.3A patent/CN110812743A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102910542A (en) * | 2012-10-26 | 2013-02-06 | 武汉船用机械有限责任公司 | Telescopic boom of marine crane |
| CN205616477U (en) * | 2015-12-29 | 2016-10-05 | 徐州重型机械有限公司 | Novel pulley mounting fixed knot constructs for jib loading boom |
| CN205892574U (en) * | 2016-07-20 | 2017-01-18 | 徐州重型机械有限公司 | Arm festival structure, jib loading boom and hoist |
| JP2019073391A (en) * | 2017-10-19 | 2019-05-16 | 株式会社アイチコーポレーション | Telescopic boom |
| CN211383579U (en) * | 2019-11-11 | 2020-09-01 | 长沙中联消防机械有限公司 | Rotating wheel device, rotating wheel device mounting structure, telescopic arm and fire fighting truck |
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| PB01 | Publication | ||
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| CB02 | Change of applicant information |
Address after: 410200 No. 997, Section 2, Tengfei Road, Wangcheng District, Changsha City, Hunan Province Applicant after: Hunan Zoomlion emergency equipment Co.,Ltd. Address before: No.997 Jinxing Road, Wangcheng District, Changsha City, Hunan Province Applicant before: Changsha Zhonglian Fire-Fighting Machinery Co.,Ltd. |
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