CN209906298U - Novel folding jib loading boom - Google Patents
Novel folding jib loading boom Download PDFInfo
- Publication number
- CN209906298U CN209906298U CN201920797662.4U CN201920797662U CN209906298U CN 209906298 U CN209906298 U CN 209906298U CN 201920797662 U CN201920797662 U CN 201920797662U CN 209906298 U CN209906298 U CN 209906298U
- Authority
- CN
- China
- Prior art keywords
- telescopic
- oil cylinder
- arm
- boom
- cylinder
- Prior art date
- 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.)
- Expired - Fee Related
Links
- 239000003921 oil Substances 0.000 description 72
- 239000000725 suspension Substances 0.000 description 5
- 230000002457 bidirectional effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Images
Landscapes
- Jib Cranes (AREA)
Abstract
The utility model discloses a novel folding crane boom, which comprises a mounting seat, a link mechanism, a basic boom, a telescopic boom, an oil cylinder and the like, wherein the oil cylinder is a luffing oil cylinder, and the end part of the telescopic rod end of the oil cylinder is hinged at the bottom of the other end of the basic boom; one end of a telescopic arm is embedded and fixed in one end part of the basic arm, which is hinged with the oil cylinder, and the telescopic arm can do sliding friction telescopic motion relative to the basic arm, the telescopic oil cylinder which drives each section of the telescopic arm to stretch is a single-stage oil cylinder and is respectively fixed on the side surface of the corresponding arm, and a sequence valve is arranged on an oil path of the telescopic oil cylinder to control the telescopic oil cylinder to extend out in order; two-way balance valves are arranged on the oil paths of the variable amplitude oil cylinder and the telescopic oil cylinder. The utility model discloses realize hydro-cylinder safety operation, improved the security of product greatly.
Description
Technical Field
The utility model relates to a jib loading boom, concretely relates to install novel folding jib loading boom on loader chassis or fork truck.
Background
The movable folding suspension arm is arranged on a loading vehicle chassis, a forklift front beam or other fixed seats, can be easily moved and is used for realizing hoisting operation. The prior art has the following defects in the boom for being mounted on a forklift chassis:
(1) can only be installed on a forklift and has limited application;
(2) because the rod cavity or the rodless cavity of the oil cylinder is under the condition of being subjected to hydraulic pressure, danger easily occurs due to too high oil return speed, and meanwhile, when oil is not fed, the oil cylinder still works to cause operation danger;
(3) the telescopic oil cylinder is a multi-stage oil cylinder, has the problems of troublesome manufacture, high difficulty and high cost, and cannot control the sequential extending sequence of each section of suspension arm;
(4) the telescopic oil cylinder is arranged at the upper part of the suspension arm, so that the whole equipment is overhigh during horizontal lifting and upward lifting, and the trafficability of the equipment is greatly influenced;
(5) the lifting capacity is limited.
Disclosure of Invention
The utility model aims at providing a can install at the loading vehicle chassis, can install the novel folding jib loading boom on fork truck again, improve the security and the commonality of product not enough to above-mentioned prior art exists.
In order to achieve the above object, the utility model adopts the following technical scheme: a novel folding crane boom comprises a mounting seat, a link mechanism, a basic boom, a telescopic boom and an oil cylinder, wherein the link mechanism comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is hinged with one end of the mounting seat through a pin shaft, the other end of the first connecting rod is hinged with one end of the second connecting rod, the other end of the second connecting rod is hinged on the basic boom and is close to one end part of the basic boom, the same end part of the basic boom and the second connecting rod is hinged with the mounting seat, and the hinged part of the first connecting rod and the second connecting rod is also hinged with a cylinder body end part of the oil cylinder; the device is characterized in that the oil cylinder is a luffing oil cylinder, and the end part of the telescopic rod end of the oil cylinder is hinged to the bottom of the other end of the basic arm; one end of a telescopic arm is embedded and fixed in one end part of the basic arm, which is hinged with the oil cylinder, and the telescopic arm can do sliding friction telescopic motion relative to the basic arm, the telescopic oil cylinder which drives each section of the telescopic arm to stretch is a single-stage oil cylinder and is respectively fixed on the side surface of the corresponding arm, and a sequence valve is arranged on an oil path of the telescopic oil cylinder to control the telescopic oil cylinder to extend out in order; two-way balance valves are arranged on the oil paths of the variable amplitude oil cylinder and the telescopic oil cylinder.
Preferably, a bent arm is fixed at the other end of the innermost section of the telescopic arm, and the suspension arm is hoisted and moved outwards. So as to prevent the heavy object from easily touching the amplitude-variable oil cylinder to influence the lifting operation when the heavy object is lifted in a telescopic way.
Preferably, a piston rod protecting cover covers the piston rod of the amplitude-variable oil cylinder, and the opening end of the piston rod protecting cover is fixed on the cylinder body of the amplitude-variable oil cylinder. The piston rod can be protected from being hit by the weight.
Compared with the prior art, the utility model discloses the beneficial effect who possesses is:
(1) the telescopic oil cylinder is arranged on the side surface of the arm, and a single-stage oil cylinder is adopted to form each section of the telescopic arm by independent driving, namely the telescopic arm needs several sections of arms to be telescopic, and then several single-stage oil cylinders are arranged, so that the installation is simpler, and a foundation is laid for subsequent orderly telescopic;
(2) a sequence valve is arranged on an oil way of the telescopic oil cylinder, namely, the sequence valve firstly extends out of the first section (the outermost arm) and then extends out of the second section, and so on, so that the safety of the product is greatly improved;
(3) the bidirectional balance valves are arranged on oil paths of the telescopic oil cylinder and the variable amplitude oil cylinder, so that a rod cavity or a rodless cavity of the oil cylinder can be locked when oil is not fed, and the safe operation of the oil cylinder is realized; the danger that the oil return speed is too high due to load inertia is prevented;
(4) the end part of the telescopic boom is additionally provided with a bent boom, so that a hoisting point of the boom is moved outwards (namely the hoisting point is far away from a luffing cylinder of the boom), and a heavy object is prevented from touching a piston rod of the luffing cylinder due to swinging during hoisting; meanwhile, the additionally arranged piston rod protection cover also plays a role in protecting the piston rod;
(5) the utility model is convenient to install, can be installed on the tail part of the chassis of the loader through a plurality of bolts, or can be installed on the cross beam of the forklift through the installation plate, and then high-pressure hydraulic oil is provided through the loader or the forklift; the hydraulic lifting device can also be arranged on a fixed table top and used as fixed lifting equipment, and high-pressure hydraulic oil can be provided through the motor hydraulic station, so that the universality is high.
Drawings
FIG. 1 is a schematic view of the structure of the second telescopic cylinder taken out from the telescopic boom of the present invention
FIG. 2 is a schematic diagram showing the comparison state of the weight hung to the highest point before and after the curved arm is additionally installed
FIG. 3 is a schematic view of the connection between the sequence valve and two telescopic cylinders
FIG. 4 is a hydraulic schematic diagram of the present invention
Fig. 5 is a hydraulic schematic diagram according to the prior art.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings.
As shown in fig. 1-4, the utility model discloses a novel folding jib loading boom, including mount pad 1, link mechanism, basic arm 4, telescopic boom 5, hydro-cylinder 6, wherein link mechanism includes first connecting rod 2, second connecting rod 3, wherein one end of first connecting rod 2 is articulated with one end of mount pad 1 through the round pin axle, the other end of first connecting rod 2 is articulated with one end of second connecting rod 3 through the round pin axle, the other end of second connecting rod 3 is articulated on basic arm 4 through the round pin axle and the articulated department of both is close to an end of basic arm 4 (the end that is close to mount pad 1), basic arm 4 is articulated with mount pad 1 with the same end tip of second connecting rod 3 (pin joint a), the articulated department of first connecting rod 2 and second connecting rod 3 still articulates the cylinder body tip of hydro-cylinder 6; the oil cylinder 6 is a luffing oil cylinder, and the end part of the telescopic rod end of the oil cylinder 6 is hinged to the bottom of the other end of the basic arm 4; the basic arm 4 and the end part hinged with the oil cylinder 6 are embedded and fixed with one end of a telescopic arm 5 by bolts, the telescopic arm 5 can do sliding friction telescopic movement relative to the basic arm 4, each section of the telescopic arm is driven by a single telescopic oil cylinder which is a single-stage oil cylinder, the specific structure of the telescopic arm 5 is the same as the conventional multi-section telescopic arm structure, only two sections of telescopic arms are shown in the figure, namely a first telescopic arm and a second telescopic arm, only two telescopic oil cylinders are provided, namely a first telescopic oil cylinder 7.1 and a second telescopic oil cylinder 7.2, wherein the cylinder barrel of the first telescopic oil cylinder 7.1 is fixed on the side surface of the head part of the basic arm 4 by four screws, the rod head of the piston rod of the first telescopic oil cylinder 7.1 is hinged on the first telescopic arm by a pin shaft, the first telescopic arm is driven to extend along with the extension of the piston rod, the cylinder barrel of the second telescopic oil cylinder 7.2 is installed on the side surface of the head of the first telescopic arm by four, a piston rod head of the second telescopic oil cylinder 7.2 is hinged on the second telescopic arm through a pin shaft, and the piston rod head drives the second telescopic arm to extend out along with the extension of the piston rod of the second telescopic oil cylinder 7.2; and the hinged part of the first telescopic oil cylinder and the first telescopic arm and the hinged part of the second telescopic oil cylinder and the second telescopic arm are arranged in waist-shaped holes, so that the piston rod of the telescopic oil cylinder is prevented from being damaged due to overlarge disturbance of the piston rod, and the piston rod is protected.
A sequence valve 8 is installed on the oil path of the telescopic oil cylinder. High-pressure oil flows out from a certain A/B port (such as A1/B1 port in figure 1) of the multi-way reversing valve 13, then passes through the telescopic cylinder balance valve 10.2 to push the first telescopic cylinder 7.1 to extend, an oil inlet C/D on a cylinder barrel of the first telescopic cylinder 7.1 is communicated with an oil outlet C '/D' on a piston rod head of the first telescopic cylinder 7.1, when the first telescopic cylinder 7.1 extends completely, the pressure of a rodless cavity of the first telescopic cylinder 7.1 and the pressure of a C 'oil port are increased continuously, so that the set pressure of the sequence valve 8 is opened, the set pressure enters a rodless cavity and a C' oil port of the second telescopic cylinder 7.2, and then the second telescopic cylinder 7.2 is pushed to extend, and the sequence valve 8 is installed between the oil port C 'of the rod head of the first telescopic cylinder 7.1, which is communicated with the rodless cavity, and the oil port C' of the rodless cavity, and the rodless cavity of the oil port.
Two-way balance valves 10.1 and 10.2 are respectively arranged on oil paths of the amplitude cylinder 6 and the telescopic cylinder 7, wherein the two-way balance valve 10.2 of the telescopic cylinder 7 is fixed on the basic arm 4 or a mounting plate of the telescopic cylinder (fixed on the basic arm 4 in the figure 1) by four screws, and according to the principle of the oil paths, the two-way balance valve 10.2 of the telescopic cylinder 7 is specifically connected between oil inlets of a rod cavity and a rodless cavity of the first telescopic cylinder 7.1 and an A/B port of a certain path of the multi-path reversing valve 13; the luffing cylinder bidirectional balance valve 10.1 is fixed on a luffing cylinder 6 or a mounting plate of a basic arm 4 (fixed on the luffing cylinder 6 in fig. 1) by four screws, and according to the principle of an oil circuit, the luffing cylinder bidirectional balance valve 10.1 is connected between oil inlets of a rod cavity and a rodless cavity of the luffing cylinder 6 and an A/B port (such as A2/B2 in fig. 1) of the other path of the multi-path directional valve 13.
The other end of the innermost arm (i.e. the second telescopic arm) of the telescopic arm 5 is fixed with a bent arm 11 through a screw, and the hoisting point of the suspension arm is moved outwards. As can be seen from fig. 2, before the curved boom 11 is additionally installed, the heavy object easily touches the luffing cylinder 6, and after the curved boom is additionally installed, when the heavy object is hoisted in a telescopic manner, the heavy object does not touch the luffing cylinder, so that the hoisting operation is not influenced.
A piston rod protective cover 12 is covered outside a piston rod of the amplitude variation oil cylinder 6, and the open end of the piston rod protective cover 12 is welded or fixed on the cylinder body of the amplitude variation oil cylinder 6 through a bolt. The piston rod can be protected from being hit by the weight. During hoisting, the luffing cylinder 6 stretches to enable the basic arm 4 and the telescopic arm 5 to rotate around a hinge point A, so that luffing of a crane arm is realized; the telescopic boom 5 is a typical boom structure of a crane, is sequentially arranged in a basic boom from large to small, and is stretched by a first telescopic oil cylinder and a second telescopic oil cylinder, so that the first telescopic boom and the second telescopic boom are driven to stretch, and the first telescopic boom is in the basic boom and the second telescopic boom is in the first telescopic boom and both are sliding friction telescopic; the telescopic arm 5 is telescopic, and a hoisting point with a bent arm reaches a hoisting position.
Claims (3)
1. A novel folding crane boom comprises a mounting seat, a link mechanism, a basic boom, a telescopic boom and an oil cylinder, wherein the link mechanism comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is hinged with one end of the mounting seat through a pin shaft, the other end of the first connecting rod is hinged with one end of the second connecting rod, the other end of the second connecting rod is hinged on the basic boom and is close to one end part of the basic boom, the same end part of the basic boom and the second connecting rod is hinged with the mounting seat, and the hinged part of the first connecting rod and the second connecting rod is also hinged with a cylinder body end part of the oil cylinder; the device is characterized in that the oil cylinder is a luffing oil cylinder, and the end part of the telescopic rod end of the oil cylinder is hinged to the bottom of the other end of the basic arm; one end of a telescopic arm is embedded and fixed in one end part of the basic arm, which is hinged with the oil cylinder, and the telescopic arm can do sliding friction telescopic motion relative to the basic arm, the telescopic oil cylinder which drives each section of the telescopic arm to stretch is a single-stage oil cylinder and is respectively fixed on the side surface of the corresponding arm, and a sequence valve is arranged on an oil path of the telescopic oil cylinder to control the telescopic oil cylinder to extend out in order; two-way balance valves are arranged on the oil paths of the variable amplitude oil cylinder and the telescopic oil cylinder.
2. The novel folding boom of claim 1, characterized in that a bent arm is fixed to the other end of the innermost arm of the telescopic boom.
3. The novel folding crane boom according to claim 1 or 2, characterized in that a piston rod protecting cover is covered outside the piston rod of the luffing cylinder, and the open end of the piston rod protecting cover is fixed on the body of the luffing cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920797662.4U CN209906298U (en) | 2019-05-30 | 2019-05-30 | Novel folding jib loading boom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920797662.4U CN209906298U (en) | 2019-05-30 | 2019-05-30 | Novel folding jib loading boom |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209906298U true CN209906298U (en) | 2020-01-07 |
Family
ID=69049407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920797662.4U Expired - Fee Related CN209906298U (en) | 2019-05-30 | 2019-05-30 | Novel folding jib loading boom |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209906298U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112062012A (en) * | 2020-09-29 | 2020-12-11 | 上海航天智能装备有限公司 | Flexible arm of lorry-mounted crane system that stretches out in proper order |
| CN112408221A (en) * | 2020-11-30 | 2021-02-26 | 江苏徐工工程机械研究院有限公司 | Amplitude-variable oil cylinder protection device, amplitude-variable oil cylinder and movable arm tower crane |
-
2019
- 2019-05-30 CN CN201920797662.4U patent/CN209906298U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112062012A (en) * | 2020-09-29 | 2020-12-11 | 上海航天智能装备有限公司 | Flexible arm of lorry-mounted crane system that stretches out in proper order |
| CN112408221A (en) * | 2020-11-30 | 2021-02-26 | 江苏徐工工程机械研究院有限公司 | Amplitude-variable oil cylinder protection device, amplitude-variable oil cylinder and movable arm tower crane |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1106733A (en) | Pressure control mechanism for a grapple skidder | |
| US4602462A (en) | Boom articulating mechanism for aerial devices | |
| CN209906298U (en) | Novel folding jib loading boom | |
| CN108408608B (en) | Vehicle-mounted grabbing mechanism | |
| CN105253786A (en) | Folding arm type lorry-mounted crane | |
| US8061764B2 (en) | Working machine and emergency lowering system | |
| CN106957033B (en) | Fork truck fly jib crane and fork truck | |
| CN108457919B (en) | Dumper with hydraulic control system and vehicle-mounted grab | |
| CN103879257B (en) | Suspension valve, hydro pneumatic suspension control system and engineering truck | |
| WO2024087626A1 (en) | Crane hydraulic control system and crane | |
| CN110921531B (en) | Balance mechanism of crane | |
| CN105236306B (en) | One kind grab bucket carrying implement | |
| CN109368491A (en) | A kind of grab bucket for bridge-type cargo unloader | |
| CN205204682U (en) | Folding arm -type lorry crane | |
| CN108407698B (en) | Vehicle-mounted gripping apparatus | |
| CN108382281B (en) | Dump truck with vehicle-mounted grab | |
| CN108382285B (en) | Anti-drop device is grabbed to vehicle-mounted | |
| CN202953715U (en) | Mobile grab bucket | |
| CN106044590B (en) | A kind of arc Telescopic boom mechanism and the crane with the mechanism | |
| WO2009082971A1 (en) | Crawler crane | |
| CN105060140B (en) | Auxiliary, crane arm and the crane of crane | |
| CN209322356U (en) | A kind of crane truck of anti-rollover | |
| CN203173756U (en) | Forklift type 360-degree all-rotation lifting extensible grab bucket loading and unloading machine | |
| CN216618060U (en) | Active and passive motion compensation trestle amplitude varying system and trestle thereof | |
| US5597080A (en) | Snag load protection system for a crane |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200107 |