CN217949203U

CN217949203U - Dozer blade anti-falling device and operation machinery

Info

Publication number: CN217949203U
Application number: CN202221996384.3U
Authority: CN
Inventors: 李华兵; 孙立耀; 高文丽
Original assignee: Sany Heavy Machinery Ltd
Current assignee: Sany Heavy Machinery Ltd
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2022-12-02
Anticipated expiration: 2032-07-29

Abstract

The utility model relates to an operating machinery technical field provides a dozer blade anti falling device and operating machinery. The dozer blade anti falling device includes: the locking piece is used for being movably connected with the frame and can be switched between an unlocking position and a locking position. And the locking part is used for being arranged on the dozer blade and is connected with the locking piece in the locking position in a clamping manner. When the blade moves to the lifting state, the locking piece moves to the locking position and is connected with the locking part on the blade, so that the blade is locked and limited, and the blade is prevented from falling. So set up, even because the sealing member is ageing or wearing and tearing, the problem that leads to the drive cylinder of dozer blade to appear the pressure release, under the linkage of locking piece and closure portion, also can carry out the locking spacing to the dozer blade, the problem that the dozer blade dropped when preventing that drive oil cylinder drive power is not enough appears has improved the safety in utilization.

Description

Dozer blade anti-falling device and operation machinery

Technical Field

The utility model relates to an operating machinery technical field especially relates to a dozer blade anti falling device and operating machinery.

Background

In the prior art, some excavators are provided with a blade, and the blade is hinged to a frame and can be switched between a lifting state and a working state under the driving of a driving cylinder. The driving oil cylinder needs to be locked in a lifting state, so that the dozer blade is prevented from falling, and dangerous conditions are prevented from occurring.

In the prior art, the problem that the arm of the driving oil cylinder falls is mainly solved by sealing the hydraulic oil in a rodless cavity and a rod cavity of the driving oil cylinder. However, the problem of pressure release caused by internal leakage or external leakage due to the abrasion or aging of the sealing element cannot be avoided, and when the hydraulic oil is too low to support the gravity of the dozer blade, the dozer blade can fall down, so that the use safety is affected.

SUMMERY OF THE UTILITY MODEL

The utility model provides a release anti falling device and operation machinery of producing for because the pressure release problem leads to the dozer blade defect that drops probably to appear among the solution prior art, realize preventing the effect that the dozer blade dropped.

The utility model provides a dozer blade anti falling device, include:

the locking piece is movably connected with the frame and can be switched between an unlocking position and a locking position;

the locking part is used for being arranged on the dozer blade and is connected with the locking piece in the locking position.

According to the utility model provides a dozer blade anti-falling device, which also comprises a driving mechanism and a control assembly;

the driving mechanism is arranged on the frame and is connected with the locking piece and used for driving the locking piece to move;

the control assembly is connected with the driving mechanism and used for controlling the driving mechanism to act.

According to the utility model provides a dozer blade anti falling device, still include pilot valve and shuttle valve;

the pilot valve is used for controlling the action of the dozer blade, and two working oil ports of the pilot valve, which are used for controlling the action of the dozer blade, are respectively connected with two oil inlets of the shuttle valve;

the control assembly is connected with the oil outlet of the shuttle valve and controls the driving mechanism to act based on the pressure value of the oil outlet of the shuttle valve.

According to the utility model provides a pair of dozer blade anti falling device still includes pressure measurement, control assembly includes the electromagnetic directional valve, pressure measurement with the oil-out of shuttle valve is connected, is used for detecting the pressure value of the oil-out of shuttle valve, the electromagnetic directional valve respectively with actuating mechanism with pressure measurement connects.

According to the utility model provides a pair of dozer blade anti falling device, control assembly is including the switching-over valve that surges, the oil-out of shuttle valve with the pilot oil circuit of switching-over valve that surges is connected, the switching-over valve that surges with actuating mechanism connects.

According to the utility model provides a pair of dozer blade anti falling device still includes handle pilot valve and detection device, the handle pilot valve is used for controlling the dozer blade action, detection device is used for detecting the positional information's of the handle of handle pilot valve detection device, control assembly is based on positional information control actuating mechanism moves.

According to the utility model provides a pair of dozer blade anti falling device still includes the elastic component, the elastic component respectively with the frame with the lock piece is connected, is used for the drive the lock piece is to the motion of locking position.

According to the utility model provides a dozer blade anti-falling device, the locking piece is a hook, the locking part is a hanging ring, and the hook is rotationally connected with the frame;

according to the utility model provides a pair of dozer blade anti falling device, the lock piece is the locating pin, closure portion is the locating hole, the locating pin with frame sliding connection.

The utility model also provides an operating machine, including frame, dozer blade and as above dozer blade anti falling device, the dozer blade with the frame rotates the connection.

The utility model provides a dozer blade anti falling device through setting up and frame swing joint's lock piece to the lock piece can switch between unblock position and locking position, when the dozer blade moves to the state of lifting, makes the lock piece move to the locking position, and is connected with the locking portion on the dozer blade, thereby carries out the locking with the dozer blade spacing, prevents the dozer blade whereabouts. When the dozer blade needs to be used, the locking piece is switched to the unlocking position, and then the dozer blade can normally fall to move to the working state.

So set up, even because the sealing member is ageing or wearing and tearing, the problem that leads to the drive cylinder of dozer blade to appear the pressure release, under the linkage effect of locking piece and closure portion, also can carry out the locking spacingly to the dozer blade, prevent the problem that the dozer blade dropped when drive oil cylinder drive power is not enough from appearing, improved the safety in utilization of dozer blade.

Further, the utility model provides a pair of operation machinery owing to contained the utility model provides a dozer blade anti falling device consequently has also contained all advantages of dozer blade anti falling device simultaneously.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a device for preventing a blade from falling provided in an embodiment of the present invention.

Reference numerals:

1. a locking member; 2. a locking portion; 3. a frame; 4. a dozer blade; 5. a drive mechanism; 6. a pilot valve; 7. a shuttle valve; 8. a working oil port; 9. an electromagnetic directional valve; 10. a pressure detection device; 11. an elastic member.

Detailed Description

To make the objects, technical solutions and advantages of the present invention clearer, the drawings in the present invention will be combined to clearly and completely describe the technical solutions of the present invention, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the prior art, the problem that the arm of the driving oil cylinder falls is mainly solved by sealing the hydraulic oil in a rodless cavity and a rod cavity of the driving oil cylinder. However, the problem of pressure release caused by internal leakage or external leakage due to the abrasion or aging of the sealing element cannot be avoided, and when the hydraulic oil is too low to support the gravity of the dozer blade, the dozer blade can fall down, so that the use safety is affected. In order to solve the problem that the blade may drop and influence the safety in use easily, the embodiment of the utility model provides a blade anti-dropping device and operation machinery.

The following describes the anti-drop device of the blade according to the embodiment of the present invention with reference to fig. 1.

Specifically, a blade anti-drop device is used for a work machine provided with a blade.

The device for preventing the dozer blade from falling comprises a locking piece 1 and a locking part 2.

The locking member 1 is adapted to be movably connected to the frame 3, and the locking member 1 is switchable between an unlocked position and a locked position.

The lock 2 is intended to be arranged on the blade 4 and the lock 2 is intended to be connected to the locking member 1 in the locking position. For example, the latch 2 can be snap-fitted to the lock member 1.

The embodiment of the utility model provides an in the anti-falling device of dozer blade, through setting up lock 1 with 3 swing joint of frame to lock 1 can switch between unblock position and locking position, when 4 motion of dozer blade to lifting state, makes lock 1 move to the locking position, and is connected with 2 closure portions on the dozer blade 4, thereby carries out the locking with the dozer blade 4 spacing, prevents 4 whereabouts of dozer blade. When the blade 4 needs to be used, the locking member 1 is switched to the unlocking position, so that the blade 4 can normally move to the working state.

So set up, even because the sealing member is ageing or wearing and tearing, the problem that leads to dozer blade 4's drive cylinder to appear the pressure release also can carry out the locking spacing to dozer blade 4 under the linkage effect of locking piece 1 and closure portion 2, prevent that the problem that dozer blade 4 dropped appears when drive oil cylinder drive power is not enough, improved dozer blade's safety in utilization.

In some embodiments of the present invention, the locking member 1 is a hook and the locking portion 2 is a hanging ring. Wherein the hook is rotatably connected with the frame 3. In the use process, after the dozer blade 4 is lifted to the right position, the hook can be rotated to penetrate through the hanging ring, so that the hook is connected with the hanging ring, and the dozer blade 4 is prevented from falling. Wherein, the suspension loop can be fixed on the blade 4 by welding.

Of course, the lock member 1 and the lock portion 2 are not limited to the above-described form of the hook and the loop. For example, in other embodiments provided by the present invention, the locking member 1 is a positioning pin, and the locking portion 2 is a positioning hole. Wherein the positioning pin is connected with the frame 3 in a sliding way. In the use process, after the dozer blade 4 is lifted to the right position, the positioning pin can be pushed to extend into the positioning hole, so that the positioning pin is connected and matched with the positioning hole, and the dozer blade 4 is prevented from falling.

In some embodiments provided herein, the dozer blade anti-fall device further comprises a drive mechanism 5 and a control assembly.

Wherein, actuating mechanism 5 sets up on frame 3 to actuating mechanism 5 is connected with locking piece 1, is used for driving locking piece 1 motion. Alternatively, the driving mechanism 5 is a linear driving mechanism, one end of which is connected to the frame 3 and the other end of which is connected to the lock member 1. For example, the linear driving mechanism is a linear cylinder, one end of the linear cylinder is rotatably connected with the frame 3, and the other end of the linear cylinder is rotatably connected with a hook or a positioning pin. Linear cylinders include, but are not limited to, oil and air cylinders.

The control component is connected with the driving mechanism 5 and is used for controlling the driving mechanism 5 to act.

When the blade 4 needs to be used, the control assembly can control the driving mechanism 5 to act, so that the driving mechanism 5 drives the locking piece 1 to move to the unlocking position. After the dozer blade 4 is used, the drive oil cylinder drives the dozer blade 4 to lift in place, and then the control assembly controls the drive mechanism 5 to act, so that the drive mechanism 5 drives the locking piece 1 to move to the locking position, and the dozer blade 4 is locked.

So set up, can drive locking piece 1 through control assembly control actuating mechanism 5 and carry out the position switch, need not the artifical position that switches locking piece 1, it is more convenient to use, and is more convenient to the locking and the unblock of dozer blade 4.

In some embodiments provided by the present invention, the dozer blade anti-drop device further comprises a pilot valve 6 and a shuttle valve.

Wherein, the pilot valve 6 is used for controlling the action of the dozer blade 4. The pilot valve 6 is, for example, a handle pilot valve.

Specifically, a multi-way valve, which directly controls the operation of the drive cylinder of the blade 4, is connected to the drive cylinder. The pilot valve 6 is connected with the multi-way valve and used for controlling the valve core state of the multi-way valve so as to achieve the effect of indirectly controlling the driving oil cylinder to act. In short, an operator controls the pilot valve 6, so that the valve core state of the multi-way valve is controlled by the pilot valve, and the action of the driving oil cylinder is controlled by the multi-way valve. The pilot valve 6 comprises two working oil ports 8 which are respectively used as an oil inlet and an oil return port to be connected with the multi-way valve.

Two working oil ports 8 of the pilot valve 6, which are used for controlling the action of the dozer blade 4, are respectively connected with two oil inlets of the shuttle valve 7.

The control assembly is connected with an oil outlet of the shuttle valve 7 and controls the driving mechanism 5 to act based on the pressure value of the oil outlet of the shuttle valve 7.

Specifically, during operation, when the dozer blade 4 needs to be controlled to fall, an operator needs to operate the pilot valve 6 so that the pilot valve 6 is in an operating state to extend the drive cylinder. At this time, one of the two working ports 8 of the pilot valve 6 discharges pressure oil, and the pressure oil may open the shuttle valve 7 and be discharged from the oil outlet of the shuttle valve 7. Pressure oil at an oil outlet of the shuttle valve 7 triggers the control assembly, the control assembly controls the driving mechanism 5 to drive the locking piece 1 to move to the unlocking position, and at the moment, the driving oil cylinder can drive the dozer blade 4 to fall down. When the blade 4 needs to be lifted after use, the operator needs to operate the pilot valve 6 to retract the drive cylinder. During retraction of the drive cylinder, the pilot valve 6 is also in an operative state to retract the drive cylinder. At this time, the other of the two oil ports 8 of the pilot valve 6 discharges the pressure oil, and the pressure oil may still open the shuttle valve 7 and be discharged from the oil outlet of the shuttle valve 7. The pressurized oil from the outlet of the shuttle valve 7 still triggers the control unit, so that the control unit continues to control the drive 5 to drive the locking member 1 to remain in the unlocked position. When the dozer blade 4 is lifted to the right position, the operator does not need to operate the pilot valve 6, and the pilot valve 6 is reset and is not in a working state any more. Two working oil ports 8 of the pilot valve 6 do not discharge pressure oil, the shuttle valve 7 is closed, the oil outlet of the shuttle valve 7 does not discharge the pressure oil any more, so that the control assembly is not triggered any more, the control assembly controls the driving mechanism 5 to drive the locking piece 1 to move to the locking position, and the dozer blade 4 is locked again.

So set up, dozer blade anti falling device can be based on the operation of operator to pilot valve 6, and control locking piece 1 switches at unblock position and locking position for the operator is manipulating the in-process of 6 control dozer blades 4 actions of pilot valve, and dozer blade anti falling device can carry out unblock and locking to dozer blade 4 automatically, need not the operator and operates dozer blade anti falling device alone again, and it is more convenient to use.

In some embodiments provided by the present disclosure, the blade anti-drop device further comprises a pressure detection device 10. The control assembly comprises a solenoid directional valve 9.

The pressure detection device 10 is connected with the oil outlet of the shuttle valve 7 and is used for detecting the pressure value of the oil outlet of the shuttle valve 7. For example, the pressure detection device 10 may be provided as a pressure sensor.

The electromagnetic directional valve 9 is connected to the driving mechanism 5 and the pressure detection device 10, respectively, and controls the driving mechanism 5 to operate based on the pressure value. It should be noted that the connection between the electromagnetic directional valve 9 and the pressure detection device 10 can be implemented by a connection method in the prior art, for example, the pressure detection device 10 is connected with the electromagnetic directional valve 9 through a data processing unit. After detecting the pressure value, the pressure detection device 10 transmits the pressure value to the data processing unit, and after processing by the data processing unit, the pressure value is transmitted to the electromagnetic directional valve 9 so as to control the electromagnetic directional valve 9 to perform corresponding actions. The data processing unit includes, but is not limited to, a line speed and a processor.

In the using process, after the pressure detection device 10 detects a pressure value, the electromagnetic directional valve 9 controls the driving mechanism 5 to act, and if the pressure detection device 10 does not detect the pressure value, the electromagnetic directional valve 9 controls the driving mechanism 5 to reset. The driving mechanism 5 is an oil cylinder or an air cylinder. The content of the electromagnetic directional valve 9 for controlling the action of the oil cylinder or the air cylinder belongs to the conventional technology in the prior art, and whether the on-off of the driving mechanism 5 and the air source or the pressure oil source is controlled is not necessary, and the description is omitted.

The utility model provides an in some embodiments, the control assembly includes the switching-over valve that surges, and the oil-out of shuttle valve 7 is connected with the guide's oil circuit that surges the switching-over valve, and the switching-over valve that surges is connected with actuating mechanism 5.

Therefore, in the using process, if the pilot valve 6 is in the working state, the oil outlet of the shuttle valve 7 discharges pressure oil, and the pressure oil can drive the hydraulic reversing valve to reverse, so that the hydraulic reversing valve controls the driving mechanism 5 to act. When the pilot valve 6 is reset and is no longer in a working state, the oil outlet of the shuttle valve 7 is no longer discharged with pressure oil, and the hydraulic reversing valve can be reset under the action of the spring, so that the driving mechanism 5 can be reset.

In some embodiments provided by the present invention, the dozer blade anti-drop device includes a handle pilot valve and a detection device. The handle pilot valve is used for controlling the action of the dozer blade 4, and the specific control principle is the same as the analysis above and is not repeated.

The detection device is used for detecting the position information of the handle pilot valve, and the control component controls the driving mechanism 5 to act based on the position information. When the blade 4 is controlled to operate, the operator needs to pull the handle of the handle pilot valve, so that the handle is in a working state when swinging.

Further, the control component is an electromagnetic directional valve 9. The detection devices are pressure sensors or position sensors and are arranged in a pair, and the pair of detection devices are respectively arranged on two sides of the handle. No matter an operator operates the handle to control the driving oil cylinder to extend or retract, the handle needs to swing towards the corresponding side, the handle swings to inevitably trigger the position sensor or the pressure sensor, the position sensor or the pressure sensor transmits signals to the electromagnetic directional valve 9, and the electromagnetic directional valve 9 controls the driving mechanism 5 to act. After the handle is reset, the pressure sensor or the position sensor is not triggered any more by the handle, and the pressure sensor or the position sensor does not transmit signals to the electromagnetic directional valve 9, so that the electromagnetic directional valve 9 is reset, and the driving mechanism 5 of the electromagnetic directional valve 9 is reset. It should be noted that, the connection form of the detection device and the electromagnetic directional valve 9 may refer to the connection form of the pressure detection device 10 and the electromagnetic directional valve 9.

In some embodiments of the present disclosure, the dozer blade anti-drop device further includes an elastic member 11, and the elastic member 11 is connected to the frame 3 and the lock member 1, respectively, for driving the lock member 1 to move to the locking position. Alternatively, the elastic member 11 may be a tension spring or a torsion spring.

With such an arrangement, the driving mechanism 5 can be set as a single-acting driving mechanism 5, that is, the driving mechanism 5 is only used for driving the locking member 1 to move to the unlocking state, and the elastic member 11 drives the locking member 1 to move to the locking position, so that the pipeline connecting structure of the driving mechanism 5 is simplified. Of course, the driving mechanism 5 may also be a double-acting driving mechanism 5, and then the elastic member 11 may be moved to the locking position under the dual actions of the elastic member 11 and the driving mechanism 5, so that the movement is smoother.

The embodiment of the utility model provides an in still provide an operation machinery.

Specifically, the work machine includes a frame 3, a blade 4, and a blade fall prevention device as described above. The blade 4 is rotatably connected with the frame 3.

It should be noted that the working machine includes the device for preventing the blade from falling down, and also includes all the advantages of the device for preventing the blade from falling down, which are not described herein again.

Meanwhile, the work machine includes, but is not limited to, an excavator.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides a dozer blade anti falling device which characterized in that includes:

2. The blade fall prevention device of claim 1 further comprising a drive mechanism and a control assembly;

3. The dozer blade anti-drop device of claim 2, further comprising a pilot valve and a shuttle valve;

4. The dozer blade anti-falling device according to claim 3, further comprising a pressure detection device, wherein the control assembly comprises an electromagnetic directional valve, the pressure detection device is connected with an oil outlet of the shuttle valve and is used for detecting a pressure value of the oil outlet of the shuttle valve, and the electromagnetic directional valve is respectively connected with the driving mechanism and the pressure detection device.

5. The dozer blade anti-drop device of claim 3, wherein the control assembly comprises a hydraulically operated directional control valve, an oil outlet of the shuttle valve is connected with a pilot oil path of the hydraulically operated directional control valve, and the hydraulically operated directional control valve is connected with the drive mechanism.

6. The blade fall prevention apparatus of claim 2 further comprising a handle pilot valve for controlling the blade action and a detection device for detecting position information of a handle of the handle pilot valve, wherein the control assembly controls the drive mechanism to act based on the position information.

7. The blade fall prevention device of any of claims 1-6 further comprising a resilient member coupled to the frame and the locking member, respectively, for urging the locking member toward a locked position.

8. The dozer blade fall prevention apparatus of any one of claims 1-6, wherein the locking member is a hook and the locking portion is a loop, the hook being rotatably connected to the frame.

9. The blade fall prevention device of any of claims 1-6 wherein the lock is a locating pin and the lock is a locating hole, the locating pin being slidably connected to the frame.

10. A work machine comprising a frame, a blade and a blade fall prevention device as claimed in any one of claims 1-9, the blade being pivotally connected to the frame.