CN210654741U - Hydraulic drive lifts equipment and vehicle with safety arrangement - Google Patents
Hydraulic drive lifts equipment and vehicle with safety arrangement Download PDFInfo
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- CN210654741U CN210654741U CN201921388822.6U CN201921388822U CN210654741U CN 210654741 U CN210654741 U CN 210654741U CN 201921388822 U CN201921388822 U CN 201921388822U CN 210654741 U CN210654741 U CN 210654741U
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Abstract
The utility model discloses a hydraulic drive lifting device with a safety protection device and a vehicle, comprising a lifting hydraulic cylinder, wherein one end of the lifting hydraulic cylinder is hinged with a frame, the other end of the lifting hydraulic cylinder is hinged with a lifting frame, and the lifting frame is hinged with the frame through a rotating shaft; the rotating shaft is fixedly connected with the ratchet wheel, one end of the pawl is provided with a claw body matched with the ratchet wheel, the middle part of the pawl is hinged to the rack, the other end of the pawl is provided with a connecting rod hinged to a piston rod joint of the brake hydraulic cylinder, and the brake hydraulic cylinder can drive the claw body of the pawl to clamp or separate from the ratchet wheel; an oil inlet is formed in one side of a rod cavity of the brake hydraulic cylinder, and a spring is arranged between a cylinder barrel of the brake hydraulic cylinder and a piston rod joint.
Description
Technical Field
The disclosure relates to the technical field of hydraulic lifting engineering machinery, in particular to a hydraulic driving lifting device with a safety protection device and a vehicle.
Background
The use of hydraulic cylinders to lift heavy objects is very common in the field of construction machinery. Generally, the equipment is protected by using a hydraulic lock, an explosion-proof valve or a brake, and heavy objects are prevented from falling rapidly.
However, the inventors have found that the hydraulic lock is not protected when the line between the hydraulic lock and the lifting cylinder breaks. And the explosion-proof valve must be installed on the hydraulic cylinder oil inlet, and when the hydraulic cylinder damages and seriously causes a large amount of hydraulic oil to leak, the explosion-proof valve also can not play the protective action. The hydraulic lock and the explosion-proof valve can not break any point of the high-pressure pipeline, and the effect of braking and locking is achieved. The size of the brake is large and is not suitable for many occasions.
SUMMERY OF THE UTILITY MODEL
The purpose of the present disclosure is to overcome the above disadvantages of the prior art, and to provide a hydraulically driven lifting device with a safety protection device and a vehicle; the safety protection device of the lifting equipment adopts the matching of the brake hydraulic cylinder and the ratchet mechanism, when the hydraulic system has no pressure or the system pressure is reduced due to the large leakage of hydraulic oil, the brake hydraulic cylinder drives the pawl to rotate under the action of the spring force, and then the pawl is clamped into the ratchet fixed on the rotating shaft, so that the purpose of locking the lifting equipment is achieved.
The first purpose of this disclosure is to propose a hydraulic drive lifting device with safety protection device, in order to realize above-mentioned purpose, this disclosure adopts the following technical scheme:
a hydraulic drive lifting device with a safety protection device comprises a lifting hydraulic cylinder, wherein one end of the lifting hydraulic cylinder is hinged with a rack, the other end of the lifting hydraulic cylinder is hinged with a lifting frame, and the lifting frame is hinged with the rack through a rotating shaft; the rotating shaft is fixedly connected with the ratchet wheel, one end of the pawl is provided with a claw body matched with the ratchet wheel, the middle part of the pawl is hinged to the rack, the other end of the pawl is provided with a connecting rod hinged to a piston rod joint of the brake hydraulic cylinder, and the brake hydraulic cylinder can drive the claw body of the pawl to clamp or separate from the ratchet wheel;
an oil inlet is formed in one side of a rod cavity of the brake hydraulic cylinder, and a spring is arranged between a cylinder barrel of the brake hydraulic cylinder and a piston rod joint.
As a further technical scheme, the oil inlet is communicated with a hydraulic pump through a first oil inlet pipeline, and the hydraulic pump is communicated with a hydraulic oil tank.
As a further technical scheme, the oil outlet pipeline of the hydraulic pump is also communicated with the two-position four-way electromagnetic directional valve through a second oil inlet pipeline, the two-position four-way electromagnetic directional valve is connected with the three-position four-way electromagnetic directional valve, and when any electromagnet of the three-position four-way electromagnetic directional valve is electrified, the electromagnet of the two-position four-way electromagnetic directional valve is electrified.
As a further technical scheme, the two-position four-way electromagnetic directional valve is connected with an overflow valve in parallel, and one oil outlet pipeline of the two-position four-way electromagnetic directional valve is communicated with a hydraulic oil tank.
As a further technical scheme, a hydraulic oil way of the lifting hydraulic cylinder is connected with a three-position four-way electromagnetic directional valve.
A second object of the present disclosure proposes a compression garbage truck comprising a hydraulically driven lifting device as described above.
A third object of the present disclosure is to propose a dust suppression vehicle comprising a hydraulically driven lifting device as described above.
A fourth object of the present disclosure is to propose a hook arm vehicle comprising a hydraulically driven lifting device as described above.
The beneficial effect of this disclosure does:
according to the hydraulic driving lifting equipment, the ratchet mechanism is matched with the brake hydraulic cylinder, and the spring is arranged between the cylinder barrel of the brake hydraulic cylinder and the joint of the piston rod, so that when the hydraulic system works normally, the ratchet mechanism does not work, and normal lifting is carried out; when the hydraulic system has no pressure or the pressure is reduced, the ratchet wheel is clamped by the pawl under the action of the spring force, the braking effect is rapidly realized, and the lifting equipment is locked.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a schematic structural diagram of a hydraulically driven lifting device during lifting operation;
FIG. 2 is a schematic diagram of a hydraulically driven lifting device in the event of a hydraulic tube burst;
in the figure, 1 lifting frame, 2 lifting hydraulic cylinders, 3 ratchet wheels, 4 pawls, 5 springs, 6 braking hydraulic cylinders, 7 three-position four-way electromagnetic directional valves, 8 two-position four-way electromagnetic directional valves, 9 overflow valves, 10 hydraulic pumps, 11 hydraulic oil tanks and 12 racks are arranged.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
for convenience of description, the words "up", "down", "left" and "right" in this disclosure, if any, merely indicate correspondence with up, down, left and right directions of the drawings themselves, and do not limit the structure, but merely facilitate description of the disclosure and simplify description, rather than indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the disclosure.
As described in the background art, the inventor finds that the existing hydraulic equipment protection device cannot achieve the effect of braking and locking when any point of a high-pressure pipeline is broken, and in order to solve the technical problems, the application provides a hydraulic driving lifting equipment with a safety protection device and a vehicle.
The application provides a hydraulic drive lifting device with a safety protection device, which comprises a lifting hydraulic cylinder, wherein one end of the lifting hydraulic cylinder is hinged with a rack, the other end of the lifting hydraulic cylinder is hinged with a lifting frame, and the lifting frame is hinged with the rack through a rotating shaft; the rotating shaft is fixedly connected with the ratchet wheel, one end of the pawl is provided with a claw body matched with the ratchet wheel, the middle part of the pawl is hinged to the rack, the other end of the pawl is provided with a connecting rod hinged to a piston rod joint of the brake hydraulic cylinder, and the brake hydraulic cylinder can drive the claw body of the pawl to clamp or separate from the ratchet wheel;
an oil inlet is formed in one side of a rod cavity of the brake hydraulic cylinder, and a spring is arranged between a cylinder barrel of the brake hydraulic cylinder and a piston rod joint.
Example 1
The hydraulic driving lifting device disclosed in the present embodiment is further described with reference to fig. 1-2;
referring to the attached figure 1, the hydraulic driving lifting equipment with the safety protection device comprises a brake hydraulic cylinder 6, a spring 5, a pawl 4, a ratchet wheel 3, a lifting hydraulic cylinder 2, a three-position four-way electromagnetic directional valve 7, a two-position four-way electromagnetic directional valve 8, an overflow valve 9, a hydraulic pump 10, a hydraulic oil tank 11, a lifting frame 1 and a rack 12.
The brake hydraulic cylinder 6 is a single-action hydraulic cylinder, the oil inlet is arranged on one side of the rod cavity, when the rod cavity is filled with hydraulic oil, the piston rod cannot be completely contracted into the cylinder barrel, and the brake hydraulic cylinder is provided with a piston rod protective sleeve.
The spring 5 is a compression spring, can adopt a high-pressure spring, is sleeved on a piston rod of the brake hydraulic cylinder 6, one end supports the cylinder barrel, and the other end supports the piston rod joint.
The middle part of the pawl 4 is hinged with a fixed frame 12, one end of the pawl is provided with a connecting rod which is hinged with a piston rod joint of the brake hydraulic cylinder 6, and the other end of the pawl is provided with a pawl body which can be clamped or separated with the ratchet wheel 3 under the action of the brake hydraulic cylinder 6.
The ratchet wheel 3 is fixed on the rotating shaft through welding or key connection and rotates along with the rotating shaft; the rotating shaft is fixed on the frame 12 through a bearing, a bearing seat and the like, the lifting frame 1 is also connected with the rotating shaft, and the hinging of the lifting frame and the frame is realized through the rotating shaft.
The lifting hydraulic cylinder 2 is a double-acting hydraulic cylinder, one end of a cylinder barrel of the lifting hydraulic cylinder 2 is hinged with the rack 12, and a telescopic rod end of the lifting hydraulic cylinder 2 is hinged with the lifting frame 1.
The three-position four-way electromagnetic directional valve 7 determines the direction of a rear oil path through the sliding of the valve core, and the three-position four-way electromagnetic directional valve 7 is communicated with a hydraulic oil path of the lifting hydraulic cylinder 2 to control the lifting hydraulic cylinder 2 to extend, retract or stop.
The two-position four-way electromagnetic directional valve 8, the two-position four-way electromagnetic directional valve 8 and the three-position four-way electromagnetic directional valve 7 are connected, one oil outlet pipeline of the two-position four-way electromagnetic directional valve 8 is communicated with the hydraulic oil tank 11, the two-position four-way electromagnetic directional valve 8 determines the direction of a rear oil way through the sliding of the valve core, the rear oil way is communicated with the hydraulic oil tank 11 when the electromagnet is not electrified, and the rear oil way is communicated with the three-position four-way electromagnetic directional valve 7 when the electromagnet. Through the arrangement of the electric control system, when any electromagnet of the three-position four-way electromagnetic reversing valve 7 is electrified, the electromagnet of the two-position four-way electromagnetic reversing valve 8 is electrified.
And the overflow valve 9 is connected with the two-position four-way electromagnetic directional valve 8 in parallel, one end of the overflow valve is connected with an oil outlet of the hydraulic pump 10, and the other end of the overflow valve is connected with the hydraulic oil tank 11. When the rear oil path of the two-position four-way electromagnetic directional valve 8 is communicated with the hydraulic oil tank 11, the overflow valve 9 does not work, and when the rear oil path of the two-position four-way electromagnetic directional valve 8 is communicated with the three-position four-way electromagnetic directional valve 7, the overflow valve 9 builds pressure in a hydraulic system.
The hydraulic pump 10 provides power for the whole equipment, the hydraulic pump 10 is communicated with the hydraulic oil tank 11, high-pressure oil generated by the hydraulic pump 10 is divided into three paths, one path of high-pressure oil is communicated with the overflow valve 9, the other path of high-pressure oil is communicated with the two-position four-way electromagnetic directional valve 8, and the other path of high-pressure oil directly flows to the brake hydraulic cylinder 6.
An oil inlet of the brake hydraulic cylinder 6 is communicated with an oil outlet pipeline of the hydraulic pump 10 through a first oil inlet pipeline, and the two-position four-way electromagnetic directional valve 8 is communicated with the oil outlet pipeline of the hydraulic pump 10 through a second oil inlet pipeline; the oil inlet pipeline of the brake hydraulic cylinder 6 is connected in parallel with the oil inlet pipeline of the two-position four-way electromagnetic directional valve 8 and the oil inlet pipeline of the overflow valve 9 which control the lifting of the lifting hydraulic cylinder 2. Arbitrary pipeline or joint when among the high-pressure line break, when the uncontrollable a large amount of leakages of hydraulic oil, the brake hydraulic cylinder can move fast, and the axis of rotation of ratchet pawl in time locking lifting frame prevents to lift the pneumatic cylinder and leads to the heavy object to fall fast because of pressure is low excessively, promptly: as long as the hydraulic system is pressureless or under-pressurized (much less than the spring force), the ratchet pawl will snap.
And the hydraulic oil tank 11 is used for providing hydraulic oil for the whole hydraulic system and has the function of dissipating heat of the hydraulic oil.
When the hydraulic system works normally, the hydraulic pressure of the brake hydraulic cylinder 6 can overcome the spring force, and the piston rod contracts to further drive the pawl to be separated from the ratchet wheel. When the hydraulic system has no pressure or the system pressure is reduced sharply due to the large leakage of hydraulic oil caused by the rupture of pipelines and pipe joints, the piston rod can extend out under the action of the spring 5, and then the pawl is driven to be clamped into the ratchet wheel.
The working principle of the hydraulic lifting equipment of the present disclosure is as follows:
when the constructor does not operate the equipment, the piston rod of the brake hydraulic cylinder 6 extends out under the action of the spring 5 to drive the pawl 4 to clamp the ratchet wheel 3, and the heavy object can be kept stable.
When a constructor starts the hydraulic pump 10 and presses a control button to feed oil below the lifting hydraulic cylinder 2, the electromagnet of the three-position four-way electromagnetic directional valve 7 is electrified, the electromagnet of the two-position four-way electromagnetic directional valve 8 is electrified and reversed at the same time, the overflow valve 9 builds pressure in a hydraulic system, the hydraulic cylinder 6 is braked to move, the pawl 4 is driven to be separated from the ratchet wheel 3, and a heavy object moves upwards under the action of the lifting hydraulic cylinder 2. And the whole lifting process can not generate the noise of 'clicking' because the ratchet pawl is completely separated from the contact. When the weight moves downwards, the same principle as when the weight moves upwards is carried out.
When a constructor looses a button, electromagnets of the three-position four-way electromagnetic reversing valve 7 and the two-position four-way electromagnetic reversing valve 8 are all powered off, the three-position four-way electromagnetic reversing valve 7 returns to a middle position, the O-shaped middle position can prevent heavy objects from falling, hydraulic oil directly returns to the hydraulic oil tank 11 through the two-position four-way electromagnetic reversing valve 8, a hydraulic system is free of pressure, a piston rod of the brake hydraulic cylinder 6 drives the pawl 4 to be in contact with the ratchet wheel 3 under the action of the spring 5, and the heavy objects are further prevented from.
When any point of the high-pressure pipeline is broken, as shown in fig. 2, under the action of gravity of a heavy object, a large amount of hydraulic oil leaks, the pressure of a hydraulic system is rapidly reduced, a piston rod of a brake hydraulic cylinder 6 rapidly extends out under the action of the force of a spring 5, and when the rotating speed of a rotating shaft of the ratchet wheel 3 is low, the ratchet wheel 3 is clamped by a pawl 4 to be locked.
The present disclosure also provides a compression garbage truck comprising the hydraulic drive lifting apparatus as described above; when the lifting frame is suitable for compressing the garbage truck, the lifting frame is a filler of the compressing garbage truck, and the rack is a carriage of the compressing garbage truck. The hydraulic drive lifting equipment can be used for lifting the filler and protecting the lifting process of the filler.
The present disclosure also proposes a dust suppression vehicle comprising the hydraulically driven lifting device as described above; when the lifting frame is suitable for the dust suppression vehicle, the lifting frame is a spraying machine of the dust suppression vehicle, and the frame is a carriage of the dust suppression vehicle. The sprayer can be lifted by adopting the hydraulic drive lifting equipment, and the lifting process of the sprayer is protected.
The present disclosure also provides an arm-hooking vehicle, comprising the hydraulic drive lifting apparatus as described above; when the lifting frame is suitable for the hook-arm vehicle, the lifting frame is a garbage can of the hook-arm vehicle, and the rack is a carriage of the hook-arm vehicle. The hydraulic drive lifting equipment can be used for lifting the garbage can and protecting the lifting process of the garbage can.
The hydraulic driving lifting equipment can be applied to other engineering machinery occasions using the hydraulic cylinder to drive the heavy object to move around the rotating shaft.
Although the present disclosure has been described with reference to specific embodiments, it should be understood that the scope of the present disclosure is not limited thereto, and those skilled in the art will appreciate that various modifications and changes can be made without departing from the spirit and scope of the present disclosure.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (8)
1. A hydraulic drive lifting device with a safety protection device is characterized by comprising a lifting hydraulic cylinder, wherein one end of the lifting hydraulic cylinder is hinged with a rack, the other end of the lifting hydraulic cylinder is hinged with a lifting frame, and the lifting frame is hinged with the rack through a rotating shaft; the rotating shaft is fixedly connected with the ratchet wheel, one end of the pawl is provided with a claw body matched with the ratchet wheel, the middle part of the pawl is hinged to the rack, the other end of the pawl is provided with a connecting rod hinged to a piston rod joint of the brake hydraulic cylinder, and the brake hydraulic cylinder can drive the claw body of the pawl to clamp or separate from the ratchet wheel;
an oil inlet is formed in one side of a rod cavity of the brake hydraulic cylinder, and a spring is arranged between a cylinder barrel of the brake hydraulic cylinder and a piston rod joint.
2. The hydraulically driven lifting device of claim 1, wherein the oil inlet is in communication with a hydraulic pump via a first oil inlet line, the hydraulic pump being in communication with a hydraulic oil tank.
3. The hydraulically driven lifting device as claimed in claim 2, wherein the outlet line of the hydraulic pump is further communicated with a two-position four-way electromagnetic directional valve through a second inlet line, the two-position four-way electromagnetic directional valve is connected with a three-position four-way electromagnetic directional valve, and when any electromagnet of the three-position four-way electromagnetic directional valve is energized, the electromagnet of the two-position four-way electromagnetic directional valve is energized.
4. The hydraulically driven lifting device of claim 3, wherein the two-position four-way electromagnetic directional valve is connected in parallel with the overflow valve, and one of the oil outlet lines of the two-position four-way electromagnetic directional valve is communicated with the hydraulic oil tank.
5. The hydraulically driven lifting device of claim 3 wherein the hydraulic circuit of the hydraulic lifting cylinder is connected to a three-position four-way solenoid directional valve.
6. A refuse compression vehicle, characterized in that it comprises a hydraulically driven lifting device according to any one of claims 1-5.
7. A dust suppression vehicle, characterized by comprising a hydraulically driven lifting device as claimed in any one of claims 1-5.
8. A hook arm vehicle, characterized in that it comprises a hydraulically driven lifting device according to any one of claims 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921388822.6U CN210654741U (en) | 2019-08-23 | 2019-08-23 | Hydraulic drive lifts equipment and vehicle with safety arrangement |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921388822.6U CN210654741U (en) | 2019-08-23 | 2019-08-23 | Hydraulic drive lifts equipment and vehicle with safety arrangement |
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| Publication Number | Publication Date |
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| CN210654741U true CN210654741U (en) | 2020-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921388822.6U Active CN210654741U (en) | 2019-08-23 | 2019-08-23 | Hydraulic drive lifts equipment and vehicle with safety arrangement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113911584A (en) * | 2021-09-28 | 2022-01-11 | 厦门大学附属中山医院 | Contactless induction garbage bin |
-
2019
- 2019-08-23 CN CN201921388822.6U patent/CN210654741U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113911584A (en) * | 2021-09-28 | 2022-01-11 | 厦门大学附属中山医院 | Contactless induction garbage bin |
| CN113911584B (en) * | 2021-09-28 | 2023-06-30 | 厦门大学附属中山医院 | Contactless induction garbage can |
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Address after: 252874 No.9 Zhonghua North Road, Liaocheng Economic Development Zone, Shandong Province Patentee after: Zhongtong New Energy Automobile Co.,Ltd. Address before: 252874 No.9 Zhonghua North Road, Liaocheng Economic Development Zone, Shandong Province Patentee before: LIAOCHENG ZHONGTONG NEW ENERGY AUTOMOBILE EQUIPMENT Co.,Ltd. |
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