CN217201789U - Boom telescoping mechanism with integrated plug-in sequence valve - Google Patents
Boom telescoping mechanism with integrated plug-in sequence valve Download PDFInfo
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- CN217201789U CN217201789U CN202123323546.5U CN202123323546U CN217201789U CN 217201789 U CN217201789 U CN 217201789U CN 202123323546 U CN202123323546 U CN 202123323546U CN 217201789 U CN217201789 U CN 217201789U
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Abstract
The utility model relates to a boom extension mechanism with an integrated plug-in sequence valve, which effectively solves the problems of the prior crane boom that the flow of the sequence valve is small, and the disorder, vibration and squeaking often occur; the technical scheme includes that the hydraulic control system comprises a first telescopic oil cylinder, a second telescopic oil cylinder and an oil way, wherein one end of a cylinder barrel of the first telescopic oil cylinder is hinged to a piston rod of the second telescopic oil cylinder; the utility model discloses the flow is great, avoid appearing the phenomenon of squealing, vibrations, disorder.
Description
Technical Field
The utility model relates to a hoist equipment technical field specifically is a davit telescopic machanism with integrated form cartridge sequence valve.
Background
The crane refers to a multi-action hoisting machine for vertically lifting and horizontally carrying heavy objects in a certain range. The crane has the working characteristics of intermittent movement, namely corresponding mechanisms for taking materials, transporting, unloading and the like in one working cycle work alternately, so that the crane is more and more widely developed and used in the market. The crane mainly comprises a hoisting mechanism, an operating mechanism, a luffing mechanism, a slewing mechanism, a metal structure and the like.
The suspension arm is the most important load-bearing structural member during crane operation, and the weight, strength and rigidity of the suspension arm directly influence the service performance of the crane. The telescopic mechanism is a key part of the suspension arm and restricts the telescopic capacity and the hoisting capacity of the suspension arm.
At present, the common telescopic mechanisms of the suspension arm comprise a single oil cylinder, an oil cylinder with a steel wire rope, a single oil cylinder bolt or a plurality of oil cylinders with sequence valves and the like.
In a conventional boom extension mechanism, two sequence valves are generally adopted for driving, and the two sequence valves are used for respectively controlling sequential extension and retraction of a first extension oil cylinder and a second extension oil cylinder to drive, so that extension and retraction of a boom are finally realized.
This device using two sequence valves has the following significant drawbacks:
1. the traditional telescopic mechanism adopts two sequence valves additionally arranged, the flow of the sequence valve is small, squeaking sound often occurs, the use of products is not smooth, and the use effect is not good.
2. Traditional telescopic machanism adopts and installs two sequence valves additional on two flexible hydro-cylinders respectively, because the sequence valve passes through pressure drive, and the sequence valve has the not enough problem of precision, and two sequence valves are installed in the position of difference, and the phenomenon of disorder often can appear, cause the flexible interference of davit, have very big drawback when using.
3. Under the condition of additionally arranging two sequences, the sequence valve is easy to vibrate when in use, and the using effect is poor.
4. Two sequence valves are installed additional to traditional telescopic machanism, and it is very inconvenient when maintenance personal overhauls, and it is complicated to change the sequence valve, and cost of maintenance is higher.
The phenomenon of instability can also occur when other high-flow sequence valves are adopted, the size is large, the spatial arrangement is limited, and how to arrange the telescopic two sequence valves in a limited space is stable in performance, so that the problem is a big problem existing at present.
Due to the technical defects in the prior art, the technical problems to be solved urgently by the technical personnel in the field are solved; therefore, a boom extension and retraction mechanism with an integrated cartridge sequence valve is important.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned condition, for overcoming prior art's defect, the utility model provides a davit telescopic machanism with integrated form cartridge sequence valve, effectual solved among the current hoist davit sequence valve flow less, the problem out of order, vibrations, squealing often appear.
The utility model relates to a davit telescopic machanism with integrated form cartridge sequence valve, including first flexible hydro-cylinder, the flexible hydro-cylinder of second and oil circuit, the cylinder one end of first flexible hydro-cylinder is articulated with the piston rod of the flexible hydro-cylinder of second, a serial communication port, the other end of first flexible hydro-cylinder is fixed with integrated form cartridge sequence valve, integrated form cartridge sequence valve is including the first sequence valve and the second sequence valve that communicate each other, the no pole chamber intercommunication of first sequence valve and the flexible hydro-cylinder of second, the no pole chamber intercommunication of second sequence valve and first flexible hydro-cylinder, the flexible hydro-cylinder of first flexible hydro-cylinder and second has between the pole chamber to connect through the oil circuit, the pressure setting value of first sequence valve is greater than the pressure setting value of second sequence valve.
Preferably, the pressure set value of the first sequence valve is 7MPa, and the pressure set value of the second sequence valve is 5.5 MPa.
Preferably, the second sequence valve is connected with the rodless cavity of the first telescopic oil cylinder through an oil pipe.
Preferably, the integrated cartridge sequence valve is fixed at the other end of the cylinder barrel of the first telescopic oil cylinder through a bolt.
Preferably, four bolts are provided.
Preferably, O-shaped rings are arranged at the joints of the first sequence valve and the second telescopic oil cylinder and the joints of the second sequence valve and the first telescopic oil cylinder.
The utility model discloses the structure is ingenious, and the practicality is strong, has following obvious advantage:
1. the device adopts the integrated cartridge sequence valve, has larger flow, can meet the flow of 120L/min through verification, avoids the sound of squeaking, and has good use experience of products.
2. This device adopts integrated form cartridge sequence valve, with sequence valve integration in one, great reduction the phenomenon of out of order appears in the traditional device easily, reduced the probability of out of order phenomenon, the davit is flexible difficult appearance to interfere, uses the smoothness.
3. This device adopts integrated form cartridge sequence valve, and the drawback of vibrations can not appear when the sequence valve uses, excellent in use effect.
4. This device adopts integrated form cartridge sequence valve, and the maintenance personal only need overhaul the integrated valve when overhauing, changes sequence valve ten minutes convenient and fast, cost of maintenance greatly reduced.
Drawings
Fig. 1 is a perspective view of the present invention in use.
Fig. 2 is a schematic view showing a three-dimensional relationship between the first telescopic cylinder and the second telescopic cylinder.
Fig. 3 is a schematic side view of the cooperation relationship between the first telescopic cylinder and the second telescopic cylinder.
Fig. 4 is an enlarged view of a point a in fig. 2 according to the present invention.
Fig. 5 is a schematic perspective view of the integrated cartridge sequence valve of the present invention.
Fig. 6 is a schematic cross-sectional view of the integrated cartridge sequence valve of the present invention.
Fig. 7 is a schematic diagram illustrating the hydraulic principle of the present invention using an integrated cartridge sequence valve.
Reference numerals are as follows: 1. a first telescopic cylinder; 2. a second telescopic oil cylinder; 3. an integrated cartridge sequence valve; 4. A first sequence valve; 5. a second sequence valve; 6. an oil pipe; 7. and (4) bolts.
Detailed Description
The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of the embodiments, which proceeds with reference to the accompanying drawings in which fig. 1 through 7 are shown. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
Embodiment one, the utility model relates to a davit telescopic machanism with integrated form cartridge sequence valve, including first flexible hydro-cylinder 1, the flexible hydro-cylinder 2 of second and oil circuit, please refer to fig. 1, fig. 1 is the overall structure of davit, and the davit telescopic machanism in this device is whole to be located inside, cylinder one end of first flexible hydro-cylinder 1 is articulated with the piston rod of the flexible hydro-cylinder 2 of second, the other end of first flexible hydro-cylinder 1 cylinder is fixed with integrated form cartridge sequence valve 3, please refer to fig. 6, wherein need notice in fig. 6 the hole that integrated form cartridge sequence valve 3 both sides were seted up is the fabrication hole, the auxiliary hole of seting up when carrying out the machine to its inside promptly, in subsequent use, as shown in fig. 4, the hole that its both sides were seted up needs to carry out the shutoff.
The integrated cartridge sequence valve 3 comprises a first sequence valve 4 and a second sequence valve 5 which are communicated with each other, please refer to fig. 6 and 7, fig. 6 is a sectional view of the integrated cartridge sequence valve 3, and fig. 7 is a hydraulic schematic diagram of the first telescopic cylinder 1, the second telescopic cylinder 2, an oil path and the integrated cartridge sequence valve 3.
The first sequence valve 4 is communicated with a rodless cavity of the second telescopic oil cylinder 2, the second sequence valve 5 is communicated with a rodless cavity of the first telescopic oil cylinder 1, rod cavities of the first telescopic oil cylinder 1 and the second telescopic oil cylinder 2 are connected through an oil way, and a pressure set value of the first sequence valve 4 is larger than a pressure set value of the second sequence valve 5.
Referring to fig. 7, there are oil paths a and b, and when the device starts to work, the device is divided into two usage modes according to the usage requirements:
1. when the suspension arm needs to be controlled to stretch out, firstly, hydraulic oil is controlled to enter through the oil path a, the hydraulic oil enters the integrated plug-in sequence valve 3 through the oil path inside the first telescopic oil cylinder 1, the one-way valve of the second sequence valve 5 in the oil path is in an opening state at the moment, the one-way valve of the first sequence valve 4 in the oil path is in a closing state, then, the hydraulic oil enters the rodless cavity of the first telescopic oil cylinder 1 after passing through the one-way valve of the second sequence valve 5, and the hydraulic oil pushes the first telescopic oil cylinder 1 to stretch out.
After the first telescopic oil cylinder 1 completely extends out, along with the gradual increase of pressure, when the pressure set value of the first sequence valve 4 is reached, the first sequence valve 4 is opened at the moment, then hydraulic oil enters the rodless cavity of the second telescopic oil cylinder 2 after passing through the first sequence valve 4, the hydraulic oil pushes the second telescopic oil cylinder 2 to extend out, and finally the extension of the control boom is realized.
2. When the boom needs to be controlled to retract, firstly, hydraulic oil is controlled to enter through the oil way b, the hydraulic oil enters the rod cavities of the first telescopic oil cylinder 1 and the second telescopic oil cylinder 2 through the oil way b, the one-way valve of the second sequence valve 5 in the oil way is in a closed state at the moment, the one-way valve of the first sequence valve 4 in the oil way is in an open state, then the hydraulic oil enters the oil way inside the first telescopic oil cylinder 1 after passing through the one-way valve of the first sequence valve 4, and the second telescopic oil cylinder 2 is pushed to retract by the hydraulic oil.
After the second telescopic oil cylinder 2 retracts completely, along with the gradual increase of the pressure in the oil way, when the pressure set value of the second sequence valve 5 is reached, the second sequence valve 5 is opened at the moment, then the hydraulic oil enters the oil duct in the first telescopic oil cylinder 1 after passing through the second sequence valve 5, the hydraulic oil pushes the first telescopic oil cylinder 1 to retract, and finally the control of the boom retraction is realized.
In the second embodiment, in order to make the use of the device more reasonable based on the first embodiment, please refer to fig. 7, the pressure setting value of the first sequence valve 4 is 7MPa, and the pressure setting value of the second sequence valve 5 is 5.5 MPa.
In the present embodiment, when in specific use, the pressure set value of the first sequence valve 4 is 7MPa, and the pressure set value of the second sequence valve 5 is 5.5 MPa.
Referring to fig. 7, there are oil paths a and b, and when the device starts to work, the device is divided into two usage modes according to the usage requirements:
1. when the suspension arm needs to be controlled to stretch out, firstly, hydraulic oil is controlled to enter through the oil path a, the hydraulic oil enters the integrated plug-in sequence valve 3 through the oil path inside the first telescopic oil cylinder 1, the one-way valve of the second sequence valve 5 in the oil path is in an opening state at the moment, the one-way valve of the first sequence valve 4 in the oil path is in a closing state, then, the hydraulic oil enters the rodless cavity of the first telescopic oil cylinder 1 after passing through the one-way valve of the second sequence valve 5, and the hydraulic oil pushes the first telescopic oil cylinder 1 to stretch out.
After the first telescopic oil cylinder 1 completely extends out, along with the gradual increase of pressure, when the pressure value in the oil circuit reaches 7MPa, the first sequence valve 4 is opened at the moment, then hydraulic oil enters the rodless cavity of the second telescopic oil cylinder 2 after passing through the first sequence valve 4, the hydraulic oil pushes the second telescopic oil cylinder 2 to extend out, and finally the extension of the control boom is realized.
2. When the boom needs to be controlled to retract, firstly, hydraulic oil is controlled to enter through the oil way b, the hydraulic oil enters the rod cavities of the first telescopic oil cylinder 1 and the second telescopic oil cylinder 2 through the oil way b, the one-way valve of the second sequence valve 5 in the oil way is in a closed state at the moment, the one-way valve of the first sequence valve 4 in the oil way is in an open state, then the hydraulic oil enters the oil way inside the first telescopic oil cylinder 1 after passing through the one-way valve of the first sequence valve 4, and the second telescopic oil cylinder 2 is pushed to retract by the hydraulic oil.
After the second telescopic oil cylinder 2 retracts completely, along with the gradual increase of the pressure in the oil way, when the pressure value in the oil way reaches 5MPa, the second sequence valve 5 is opened at the moment, then hydraulic oil enters an oil duct in the first telescopic oil cylinder 1 after passing through the second sequence valve 5, the hydraulic oil pushes the first telescopic oil cylinder 1 to retract, and finally the control of the boom retraction is realized.
In the third embodiment, on the basis of the first embodiment, the second sequence valve 5 is connected with the rodless cavity of the first telescopic cylinder 1 through an oil pipe 6.
In a fourth embodiment, on the basis of the first embodiment, in order to make the installation, disassembly and maintenance of the integrated cartridge sequence valve 3 more convenient and faster, please refer to fig. 5, the integrated cartridge sequence valve 3 is fixed at the other end of the cylinder of the first telescopic cylinder 1 through a bolt.
In the fifth embodiment, on the basis of the fourth embodiment, four bolts 7 are provided to ensure the stability of the installation of the integrated cartridge sequence valve 3.
In a sixth embodiment, on the basis of the first embodiment, in order to ensure the sealing performance of the device, O-rings are arranged at the joints of the first sequence valve 4 and the second telescopic cylinder 2, and the joints of the second sequence valve 5 and the first telescopic cylinder 1, and the sealing performance of the device is ensured by the O-rings.
The utility model discloses when specifically using, divide into two kinds of service modes according to the use needs:
1. when the suspension arm needs to be controlled to stretch out, firstly, hydraulic oil is controlled to enter through the oil path a, the hydraulic oil enters the integrated plug-in sequence valve 3 through the oil path inside the first telescopic oil cylinder 1, the one-way valve of the second sequence valve 5 in the oil path is in an opening state at the moment, the one-way valve of the first sequence valve 4 in the oil path is in a closing state, then, the hydraulic oil enters the rodless cavity of the first telescopic oil cylinder 1 after passing through the one-way valve of the second sequence valve 5, and the hydraulic oil pushes the first telescopic oil cylinder 1 to stretch out.
After the first telescopic oil cylinder 1 completely extends out, along with the gradual increase of pressure, when the pressure value in the oil circuit reaches 7MPa, the first sequence valve 4 is opened at the moment, then hydraulic oil enters the rodless cavity of the second telescopic oil cylinder 2 after passing through the first sequence valve 4, the hydraulic oil pushes the second telescopic oil cylinder 2 to extend out, and finally the extension of the control boom is realized.
2. When the boom needs to be controlled to retract, firstly, hydraulic oil is controlled to enter through the oil way b, the hydraulic oil enters the rod cavities of the first telescopic oil cylinder 1 and the second telescopic oil cylinder 2 through the oil way b, the one-way valve of the second sequence valve 5 in the oil way is in a closed state at the moment, the one-way valve of the first sequence valve 4 in the oil way is in an open state, then the hydraulic oil enters the oil way inside the first telescopic oil cylinder 1 after passing through the one-way valve of the first sequence valve 4, and the second telescopic oil cylinder 2 is pushed to retract by the hydraulic oil.
After the second telescopic oil cylinder 2 retracts completely, along with the gradual increase of the pressure in the oil way, when the pressure value in the oil way reaches 5MPa, the second sequence valve 5 is opened at the moment, then hydraulic oil enters an oil duct in the first telescopic oil cylinder 1 after passing through the second sequence valve 5, the hydraulic oil pushes the first telescopic oil cylinder 1 to retract, and finally the control of the boom retraction is realized.
The utility model discloses the structure is ingenious, and the practicality is strong, has following obvious advantage:
1. the device adopts the integrated cartridge sequence valve, has larger flow, can meet the flow of 120L/min through verification, avoids the sound of squeaking, and has good use experience of products.
2. This device adopts integrated form cartridge sequence valve, with sequence valve integration in one, great reduction the phenomenon of out of order appears in the traditional device easily, reduced the probability of out of order phenomenon, the davit is flexible difficult appearance to interfere, uses the smoothness.
3. This device adopts integrated form cartridge sequence valve, and the drawback of vibrations can not appear when the sequence valve uses, excellent in use effect.
4. This device adopts integrated form cartridge sequence valve, and the maintenance personal only need overhaul the integrated valve when overhauing, changes sequence valve ten minutes convenient and fast, cost of maintenance greatly reduced.
Claims (6)
1. A boom extension mechanism with an integrated cartridge sequence valve comprises a first extension oil cylinder (1), a second extension oil cylinder (2) and an oil way, one end of the cylinder barrel of the first telescopic oil cylinder (1) is hinged with the piston rod of the second telescopic oil cylinder (2), it is characterized in that the other end of the cylinder barrel of the first telescopic oil cylinder (1) is fixed with an integrated plug-in sequence valve (3), the integrated cartridge sequence valve (3) comprises a first sequence valve (4) and a second sequence valve (5) which are communicated with each other, the first sequence valve (4) is communicated with a rodless cavity of the second telescopic oil cylinder (2), the second sequence valve (5) is communicated with a rodless cavity of the first telescopic oil cylinder (1), the rod cavities of the first telescopic oil cylinder (1) and the second telescopic oil cylinder (2) are connected through an oil way, the pressure set value of the first sequence valve (4) is greater than the pressure set value of the second sequence valve (5).
2. The boom extension and retraction mechanism with integrated cartridge sequence valve according to claim 1, characterized in that the pressure set-point of the first sequence valve (4) is 7MPa and the pressure set-point of the second sequence valve (5) is 5.5 MPa.
3. The boom extension mechanism with integrated cartridge sequence valve according to claim 1, characterized in that the second sequence valve (5) is connected to the rodless chamber of the first extension cylinder (1) via an oil pipe (6).
4. The boom extension mechanism with the integrated cartridge sequence valve as claimed in claim 1, characterized in that the integrated cartridge sequence valve (3) is fixed at the other end of the cylinder of the first telescopic cylinder (1) via a bolt (7).
5. The boom extension and retraction mechanism with integrated cartridge sequence valve according to claim 4, characterized in that four bolts (7) are provided.
6. The boom telescoping mechanism with the integrated cartridge sequence valve as claimed in claim 1, characterized in that the joints of the first sequence valve (4) and the second telescoping cylinder (2) and the second sequence valve (5) and the first telescoping cylinder (1) are provided with O-rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123323546.5U CN217201789U (en) | 2021-12-27 | 2021-12-27 | Boom telescoping mechanism with integrated plug-in sequence valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123323546.5U CN217201789U (en) | 2021-12-27 | 2021-12-27 | Boom telescoping mechanism with integrated plug-in sequence valve |
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| Publication Number | Publication Date |
|---|---|
| CN217201789U true CN217201789U (en) | 2022-08-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123323546.5U Active CN217201789U (en) | 2021-12-27 | 2021-12-27 | Boom telescoping mechanism with integrated plug-in sequence valve |
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|---|---|
| CN (1) | CN217201789U (en) |
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2021
- 2021-12-27 CN CN202123323546.5U patent/CN217201789U/en active Active
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