Material crushing truck

Abstract

The present invention discloses a material crushing vehicle, which comprises a transport vehicle body, a storage box, a crushing device and a discharge device. The storage box is arranged on the transport vehicle body and has a discharge port formed at the rear end. The crushing device comprises a crushing bin, a crushing device and a lifting member. The crushing bin can be lifted and arranged at the rear end of the storage box and is used to seal the discharge port. The crushing device is arranged in the crushing bin and is used to crush the material and guide the crushed material into the storage box. The lifting member is arranged on the storage box and connected to the crushing bin, and the lifting member is used to lift the crushing bin upward to open the discharge port. The discharge device is movably arranged in the storage box and is used to push the crushed material out of the discharge port, and at the same time realizes a rear-feeding and rear-discharging operation mode. The rear-feeding operation mode does not need to occupy another lane and will not cause traffic congestion. The rear-discharging operation mode has better adaptability to a special storage pit or a discharge pit of a garbage disposal site, which is beneficial to improving the discharge effect.

Description

Technical Field

[0001] The invention belongs to the technical field of material crushing, and in particular relates to a material crushing vehicle. Background Art

[0002] my country has a well-developed transportation network and a large number of gardens. In order to prevent the green plants on both sides of the road and in the gardens from affecting traffic and public safety, it is necessary to regularly trim the green plants on both sides of the road and in the gardens. The resulting garbage can be crushed and transported by a crusher. There are generally two ways to arrange existing material crushers. The first is to arrange the crusher on the front side of the storage box to facilitate unloading from the rear end of the storage box. The second is to arrange the crusher on the rear side of the storage box to facilitate feeding. However, the storage box needs to be set to side unloading. The first arrangement requires feeding from the side, which requires occupying an additional lane and will affect road traffic. The second arrangement cannot unload the crushed material into a dedicated storage pit or a unloading pit in a garbage disposal site, which has a bad effect on the unloading effect. Summary of the invention

[0003] In view of the above-mentioned defects or shortcomings, the present invention provides a material crushing vehicle, aiming to solve the technical problems of the existing material crushing vehicles such as inconvenient feeding or poor unloading effect.

[0004] To achieve the above-mentioned purpose, the present invention provides a material crushing vehicle, wherein the material crushing vehicle includes: a transport body, a storage box, a crushing equipment and a discharge device; the storage box is arranged on the transport body and has a discharge port formed at the rear end; the crushing equipment includes a crushing bin, a crushing device and a lifting member, the crushing bin can be lifted and lowered at the rear end of the storage box and is used to seal the discharge port, the crushing device is arranged in the crushing bin and is used to crush the material and guide the crushed material into the storage box, the lifting member is arranged on the storage box and connected to the crushing bin, the lifting member is used to lift the crushing bin upward to open the discharge port; the discharge device is movably arranged in the storage box and is used to push the crushed material out of the discharge port.

[0005] In an embodiment of the present invention, the front end of the crushing bin is movably hinged to the rear end of the storage box through a pin shaft, the lifting member is a lifting cylinder, the lower end of the lifting cylinder is movably hinged to the storage box, and the upper end of the lifting cylinder is connected to the crushing bin.

[0006] In the embodiment of the present invention, the discharge port is inclined from bottom to top toward the front end of the storage box.

[0007] In an embodiment of the present invention, a sealing end plate is provided at the front end of the crushing bin, which is inclined from bottom to top toward the front end of the storage box and is used to seal the discharge port, and the discharge port of the crushing equipment extends to the storage box through the sealing end plate.

[0008] In an embodiment of the present invention, a guide rail is laid on the inner wall of the material storage box in a direction from the front end of the material storage box toward the rear end of the material storage box, and the unloading device includes a unloading cylinder and a unloading rack. The unloading rack is movably arranged on the guide rail, one end of the unloading cylinder is connected to the front end of the material storage box, and the other end of the unloading cylinder is connected to the unloading rack.

[0009] In an embodiment of the present invention, the material crushing vehicle also includes a locking device, which includes a driving mechanism arranged at the lower part of the storage box, a locking hook connected to the driving mechanism, and a hook seat arranged on the crushing bin and forming a locking opening. The driving mechanism is used to drive the locking hook to rotate so that the locking hook enters or exits the locking opening.

[0010] In an embodiment of the present invention, the locking hook member is rotatably disposed on the material storage box, and the driving mechanism includes a locking cylinder, a swing arm body and a connecting rod. The swing arm body is rotatably disposed on the material storage box, one end of the locking cylinder is movably hinged to the lower part of the material storage box, the other end of the locking cylinder is connected to the swing arm body, and the two ends of the connecting rod are respectively connected to the swing arm body and the locking hook member. The rotation axis of the swing arm body and the connection axis of the locking cylinder and the swing arm body are not colinearly arranged, and the rotation axis of the locking hook member and the connection axis of the connecting rod and the locking hook member are not colinearly arranged.

[0011] In an embodiment of the present invention, a linkage frame is provided on the material storage box, and the linkage frame includes two mounting seats respectively arranged on both sides of the material storage box and a linkage shaft rotatably passed through the two mounting seats. There are two locking devices, and the two locking devices are arranged in a one-to-one correspondence with the two mounting seats, and the swing arm bodies of the two locking devices are correspondingly sleeved on the shaft ends of the linkage shaft extending from the two mounting seats, and the locking hook members of the two locking devices are correspondingly rotatably arranged on the two mounting seats.

[0012] In an embodiment of the present invention, the material crushing vehicle also includes a hydraulic drive system, which includes a variable pump device, a crushing motor device and a pressure regulating device. The crushing motor device is connected to the variable pump device through a crushing drive oil circuit and is used to drive the crushing equipment. The pressure regulating device is used to divert and reduce the pressure of the crushing drive oil circuit when the oil pressure in the crushing drive oil circuit exceeds a preset maximum oil pressure.

[0013] In an embodiment of the present invention, the pulverizing drive oil circuit includes: a first oil circuit and a second oil circuit, the first oil circuit is connected to the oil inlet of the pulverizing motor device and the oil outlet of the variable pump device, and the second oil circuit is connected to the oil outlet of the pulverizing motor device and the oil inlet of the variable pump device;

[0014] The pressure regulating device includes a pressure regulating oil circuit, a first proportional relief valve and a one-way valve. The pressure regulating oil circuit connects the first oil circuit and the second oil circuit. The first proportional relief valve and the one-way valve are arranged on the pressure regulating oil circuit. The one-way valve is used to set the oil flow direction of the pressure regulating oil circuit to flow from the second oil circuit to the first oil circuit. The first proportional relief valve is configured as follows:

[0015] When the pulverizing motor device is in a natural stop braking mode, controlling the relief pressure to be set to a first relief pressure;

[0016] In a case where the pulverizing motor device is in an emergency stop braking mode, the control sets the relief pressure to a second relief pressure, wherein the second relief pressure is greater than the first relief pressure.

[0017] In an embodiment of the present invention, the pressure regulating device further comprises a throttle valve arranged on the pressure regulating oil circuit.

[0018] In an embodiment of the present invention, the pressure regulating device further comprises a first accumulator, and the first accumulator is connected to the pulverizing drive oil circuit.

[0019] In an embodiment of the present invention, the pulverizing drive oil circuit includes: a first oil circuit and a second oil circuit, the first oil circuit is connected to the oil inlet of the pulverizing motor device and the oil outlet of the variable pump device, and the second oil circuit is connected to the oil outlet of the pulverizing motor device and the oil inlet of the variable pump device;

[0020] The pressure regulating device includes:

[0021] Second accumulator;

[0022] And a first solenoid valve and / or a second solenoid valve, the first solenoid valve is connected to the first oil circuit and the second accumulator, and the first solenoid valve is used to be energized when the crushing motor device is in an accelerated starting state, so that the first oil circuit is connected to the second accumulator; the second solenoid valve is connected to the second oil circuit and the second accumulator, and the second solenoid valve is used to be energized when the crushing motor device is in a braking state, so that the second oil circuit is connected to the second accumulator.

[0023] In an embodiment of the present invention, the pressure regulating device further comprises a second proportional relief valve, a first end of the second proportional relief valve is connected to an oil outlet of the first solenoid valve and / or the second solenoid valve, a second end of the second proportional relief valve leads to an oil replenishment circuit of the variable pump device, and the second proportional relief valve is configured as follows:

[0024] When the pulverizing motor device is in a natural stop braking mode, controlling the relief pressure to be set to a first relief pressure;

[0025] When the pulverizing motor device is in an emergency stop braking mode, controlling the overflow pressure to be set to a second overflow pressure, wherein the second overflow pressure is greater than the first overflow pressure;

[0026] and / or the second proportional relief valve is further configured as:

[0027] In the case where the pulverizing motor device is in the acceleration start state, the control sets the relief pressure to the third relief pressure.

[0028] In an embodiment of the present invention, the pressure regulating device further comprises a cooler, and the cooler is connected between the second end of the second proportional relief valve and the oil replenishment circuit of the variable pump device.

[0029] In an embodiment of the present invention, the pressure regulating device includes a third solenoid valve and an energy storage pressure sensor, the oil inlet of the third solenoid valve is connected to the second oil circuit, the oil outlet of the third solenoid valve is connected to the oil circuit between the second proportional relief valve and the cooler, the energy storage pressure sensor is connected to the oil circuit between the second accumulator and the first solenoid valve, and is used to detect the released oil pressure of the second accumulator, the first solenoid valve and the third solenoid valve are used to be energized when the crushing motor device is in a re-acceleration start-up state and the released oil pressure is greater than the preset minimum oil pressure, so that the second accumulator can drive the crushing motor device.

[0030] In an embodiment of the present invention, the hydraulic drive system also includes a pressure detection device, which is used to control the displacement of the variable pump device to stop increasing when the crushing motor device is in an accelerated start-up state and detects that the oil pressure at the oil outlet of the variable pump device exceeds a preset maximum oil pressure.

[0031] In an embodiment of the present invention, the variable displacement pump device comprises:

[0032] A main oil pump, the oil outlet of the main oil pump is connected to the oil inlet of the pulverizing motor device through a first oil passage, and the oil inlet of the main oil pump is connected to the oil outlet of the pulverizing motor device through a second oil passage;

[0033] An oil replenishment pump, the oil replenishment pump is arranged on an oil replenishment oil line connected to the oil tank;

[0034] A variable solenoid valve, the oil inlet of the variable solenoid valve is connected to the oil outlet of the oil replenishment pump;

[0035] and a variable piston, the piston chamber of the variable piston being communicated with the oil outlet of the variable solenoid valve, the piston rod of the variable piston being used to move under the drive of the hydraulic oil input by the variable solenoid valve to adjust the displacement of the main oil pump;

[0036] Among them, the pressure detection device is a pressure cut-off valve or a crushing pressure sensor, the first end of the pressure cut-off valve is connected to the first oil circuit and the second oil circuit respectively, the second end of the pressure cut-off valve is connected to the oil circuit between the oil replenishment pump and the variable solenoid valve, and the third end of the pressure cut-off valve leads to the oil tank. The pressure cut-off valve is used to control the third end to be connected to the oil tank when the crushing motor device is in an accelerated starting state and detects that the oil pressure in the first oil circuit exceeds the preset maximum oil pressure; the crushing pressure sensor is arranged in the first oil circuit, and is used to control the current of the variable solenoid valve to stop increasing when the crushing motor device is in an accelerated starting state and detects that the oil pressure in the first oil circuit exceeds the preset maximum oil pressure.

[0037] Through the above technical solution, the material crushing vehicle provided by the embodiment of the present invention has the following beneficial effects:

[0038] When the above-mentioned material crushing vehicle is used, since it includes a transport body, a storage box, a crushing equipment and a unloading device, and the crushing bin of the crushing equipment is arranged at the rear end of the storage box, the rear-feeding operation mode can be realized. The rear-feeding operation mode does not need to occupy another lane and will not cause traffic congestion. In addition, the lifting member arranged on the storage box is connected to the crushing bin and is used to lift the crushing bin upward so that the unloading port at the rear end of the storage box is opened, and then the unloading device is driven to move in the storage box, so that the material in the storage box can be pushed out from the unloading port, thereby realizing the rear-unloading operation mode at the same time. The rear-unloading operation mode is better adaptable to special storage pits or unloading pits in garbage disposal sites, which is beneficial to improving the unloading effect.

[0039] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The accompanying drawings are used to provide an understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation of the present invention. In the accompanying drawings:

[0041] Figure 1 is a schematic structural diagram of a material crushing vehicle crushing operation according to an embodiment of the present invention;

[0042] Figure 2 is a structural schematic diagram of a material crushing vehicle unloading operation according to an embodiment of the present invention;

[0043] Figure 3 is a schematic structural diagram of a discharging device according to an embodiment of the present invention;

[0044] Figure 4 is a schematic diagram of the disassembled structure of a material crushing vehicle according to an embodiment of the present invention;

[0045] Figure 5 yes Figure 3 An enlarged schematic diagram of A in FIG.

[0046] Figure 6 is a partial structural schematic diagram of a locking device and a linkage frame according to an embodiment of the present invention;

[0047] Figure 7 is a structural schematic diagram of a hydraulic drive system according to an embodiment of the present invention;

[0048] Figure 8 2 is a schematic structural diagram of a hydraulic drive system according to another embodiment of the present invention.

[0049] Description of Reference Numerals

[0050] 100 Transport vehicle 200 Storage box

[0051] 201 Unloading device 202 Unloading cylinder

[0052] 203 Unloading rack 300 Crushing equipment

[0053] 301 Crushing chamber 302 Crushing device

[0054] 303 Lifting Parts 304 Outrigger Cylinder

[0055] 305 Sealing end plate 306 Pin

[0056] 400 Locking device 401 Driving mechanism

[0057] 402 Lock hook 403 Hook seat

[0058] 404 Locking cylinder 405 Swing arm body

[0059] 406 connecting rod 407 linkage frame

[0060] 408 Mounting seat 409 Linkage shaft

[0061] 500 Variable displacement pump device 501 Main oil pump

[0062] 502 oil charge pump 503 variable solenoid valve

[0063] 504 variable piston 504 low pressure relief valve

[0064] 505 High pressure relief valve 506 Pressure cut-off valve

[0065] 507 crushing pressure sensor 508 filter

[0066] 509 Oil tank 600 Crushing motor device

[0067] 601 Crushing blade 602 Crushing speed sensor

[0068] 700 Pressure regulating device 701 Throttle valve

[0069] 702 Check valve 703 First proportional relief valve

[0070] 704 First accumulator 705 Second accumulator

[0071] 706 First solenoid valve 707 Second solenoid valve

[0072] 708 third solenoid valve 709 fourth solenoid valve

[0073] 710 Second proportional relief valve 711 Cooler

[0074] 712 Accumulator pressure sensor 800 Crushing drive oil circuit

[0075] 801 First oil circuit 802 Second oil circuit DETAILED DESCRIPTION

[0076] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0077] The material crushing vehicle of the present invention will be described below with reference to the accompanying drawings.

[0078] like Figure 1 and Figure 2 As shown, the present invention provides a material crushing vehicle, wherein the material crushing vehicle comprises:

[0079] Transport vehicle body 100;

[0080] The material storage box 200 is arranged on the transport vehicle body 100 and has a discharge port formed at the rear end;

[0081] The crushing device 300 includes a crushing bin 301, a crushing device 302 and a lifting member 303. The crushing bin 301 is movably arranged at the rear end of the storage box 200 and is used to seal the discharge port. The crushing device 302 is arranged in the crushing bin 301 and is used to crush the material and guide the crushed material into the storage box 200. The lifting member 303 is arranged on the storage box 200 and connected to the crushing bin 301. The lifting member 303 is used to lift the crushing bin 301 upward to open the discharge port.

[0082] The discharge device 201 is movably disposed in the storage box 200 and is used to push the crushed materials out of the discharge port.

[0083] When the above-mentioned material crushing vehicle is used, since it includes a transport body 100, a storage box 200, a crushing device 300 and a discharge device 201, and the crushing bin 301 of the crushing device 300 is arranged at the rear end of the storage box 200, a rear-feeding operation mode can be realized. The rear-feeding operation mode does not need to occupy another lane and will not cause traffic congestion. In addition, the lifting member 303 arranged in the storage box 200 is connected to the crushing bin 301 and is used to lift the crushing bin 301 upward so that the discharge port at the rear end of the storage box 200 is opened, and then the discharge device 201 is driven to move in the storage box 200. Then, the material in the storage box 200 can be pushed out from the discharge port, thereby realizing the rear-discharge operation mode at the same time. The rear-discharge operation mode is better adaptable to special storage pits or discharge pits in garbage disposal sites, which is beneficial to improving the unloading effect.

[0084] In the embodiment of the present invention, the front end of the crushing bin 301 is movably hinged to the rear end of the storage box 200 through the pin 306, the lifting member 303 is a lifting cylinder, the lower end of the lifting cylinder is movably hinged to the storage box 200, and the upper end of the lifting cylinder is connected to the crushing bin 301. That is, when preparing to enter the unloading operation, the lifting cylinder can be controlled to extend, so that the crushing bin 301 rotates upward with the pin 306 as the rotation axis to open the unloading port of the storage box 200, and after the unloading operation is completed, the lifting cylinder can be controlled to retract, so that the crushing bin 301 rotates downward with the pin 306 as the rotation axis until the unloading port of the storage box 200 is sealed. The lifting member 303 is set as a lifting cylinder, which can ensure the smoothness, stability and reliability of the movement. At the same time, the number of the lifting cylinders can be two, and the two lifting cylinders are respectively arranged on the left and right sides of the storage box 200. Of course, the present invention is not limited thereto, and the lifting member 303 may also be other suitable telescopic members, such as an electric push rod or a cylinder.

[0085] In the embodiment of the present invention, the discharge port is tilted from bottom to top toward the front end of the storage box 200. This is equivalent to the frame forming the discharge port being tilted forward from top to bottom, so that the crushing bin 301 can be better connected with the storage box 200 to prevent the leakage and scattering of crushed materials during the crushing operation or transportation. Specifically, in order to connect with the discharge port of the storage box 200, the front end of the crushing bin 301 can also be tilted forward from bottom to top, and the inclination angle of the discharge port can be consistent with the inclination angle of the front end of the crushing bin 301, and the specific value of the inclination angle can be set accordingly according to actual needs.

[0086] In the embodiment of the present invention, a sealing end plate 305 is provided at the front end of the crushing bin 301, and the sealing end plate 305 is inclined from bottom to top toward the front end of the storage box 200 and is used to seal the discharge port. The discharge port of the crushing device 300 extends to the storage box 200 through the sealing end plate 307. That is, the crushing bin 301 is provided with a sealing end plate 305 for separation between the crushing space and the storage space of the storage box 200. The crushing bin 301 can form a relatively sealed crushing space, and the crushed materials entering the storage box 200 will not be scattered in the crushing bin 301. At the same time, it can also play a role of dustproof and waterproof for the crushing device 302, hydraulic system and electrical system in the crushing bin 301, prevent wood chips from flying out and injuring people, and reduce noise and noise. Specifically, side doors are respectively provided on the left and right sides of the crushing bin 301 to facilitate personnel to enter the interior to maintain the crushing device 302, hydraulic system and electrical control system, and a vehicle rolling door is provided at the rear of the crushing bin 301.

[0087] See also Figures 1 to 3 In the embodiment of the present invention, the inner wall of the material storage box 200 is paved with a guide rail in the direction from the front end of the material storage box 200 to the rear end of the material storage box 200, and the unloading device 201 includes a unloading cylinder 202 and a unloading frame 203, and the unloading frame 203 is movably arranged on the guide rail, one end of the unloading cylinder 202 is connected to the front end of the material storage box 200, and the other end of the unloading cylinder 202 is connected to the unloading frame 203. That is, in the process of unloading operation, the unloading cylinder 202 can be controlled to extend so that the unloading frame 203 moves from the front end of the material storage box 200 to the rear end of the material storage box 200, so that the crushed materials in the material storage box 200 can be pushed out, and after the unloading operation is completed, the unloading cylinder 202 can be controlled to retract so that the unloading frame 203 moves toward the front end of the material storage box 200. Specifically, the unloading frame 203 is provided with rollers or sliders cooperating with the guide rails, the unloading cylinder 202 is a multi-stage telescopic cylinder, and the unloading frame 203 is formed with a pushing plane which is inclined upward and facing the crushing bin.

[0088] See also Figure 4 and Figure 5In the embodiment of the present invention, the material crushing vehicle further includes a locking device 400, which includes a driving mechanism 401 disposed at the lower part of the storage box 200, a locking hook 402 connected to the driving mechanism 401, and a hook seat 403 disposed on the crushing bin 301 and forming a locking opening. The driving mechanism 401 is used to drive the locking hook 402 to rotate so that the locking hook 402 enters or exits the locking opening. That is, when the unloading operation is completed, the lifting member 303 drives the crushing bin 301 to rotate downward until the unloading opening of the storage box 200 is sealed, and then the driving mechanism 401 can be controlled to drive the locking hook 402 to rotate forward so that the locking hook 402 enters the locking opening of the locking seat 403, so that the locking hook 402 is locked on the locking seat 403, which is conducive to the stable installation of the crushing bin 301 on the storage box 200. When unloading is required, the driving mechanism 401 needs to be controlled to drive the lock hook 402 to rotate in the opposite direction, so that the lock hook 402 withdraws from the locking opening of the lock seat 403, and the lock hook 402 is separated from the lock seat 403.

[0089] In an embodiment of the present invention, the locking hook member 402 is rotatably disposed on the storage box 200, and the driving mechanism 401 includes a locking cylinder 404, a swing arm body 405 and a connecting rod 406. The swing arm body 405 is rotatably disposed on the storage box 200, one end of the locking cylinder 404 is movably hinged to the lower part of the storage box 200, and the other end of the locking cylinder 404 is connected to the swing arm body 405, and the two ends of the connecting rod 406 are respectively connected to the swing arm body 405 and the locking hook member 402, the rotation axis of the swing arm body 405 and the connection axis of the locking cylinder 404 and the swing arm body 405 are not colinearly arranged, and the rotation axis of the locking hook member 402 and the connection axis of the connecting rod 406 and the locking hook member 402 are not colinearly arranged. Specifically, when the lock hook 402 needs to be locked on the lock seat 403, the locking cylinder 404 retracts, and the locking cylinder 404 is staggered from the rotation axis of the swing arm body 405 and connected to the swing arm body 405, so that a pulling torque is formed, and the swing arm body 405 is pulled toward the side close to the locking cylinder 404 to rotate, and the connecting rod 406 connected to the swing arm body 405 is pulled accordingly. In addition, the end of the connecting rod 406 away from the swing arm body 405 is staggered from the rotation axis of the lock hook 402 and connected to the lock hook 402, so the pulling force applied to the connecting rod 406 can continue to be transmitted to the lock hook 402 until the lock hook 402 is pulled into the locking opening. More specifically, the lock hook 402 includes a rotatably mounted mounting portion and a hook portion that can be hooked on the locking opening, the hook portion is arranged upward, and the connecting rod 406 is connected to the side of the mounting portion of the lock hook 402 close to the lock seat 403. In addition, when the lock hook 402 needs to be separated from the lock seat 403, the locking cylinder 404 extends, and the locking cylinder 404 is staggered from the rotation axis of the swing arm body 405 and connected to the swing arm body 405, so that a driving torque is formed, which pushes the swing arm body 405 to rotate toward the side away from the locking cylinder 404, and the connecting rod 406 connected to the swing arm body 405 is pulled accordingly. In addition, the end of the connecting rod 406 away from the swing arm body 405 is staggered from the rotation axis of the lock hook 402 and connected to the lock hook 402, so the thrust applied to the connecting rod 406 can continue to be transmitted to the lock hook 402 until the lock hook 402 is pushed out of the locking mouth.

[0090] See also Figure 5 and Figure 6In the embodiment of the present invention, a linkage frame 407 is provided on the material storage box 200, and the linkage frame 407 includes two mounting seats 408 respectively arranged on both sides of the material storage box 200 and a linkage shaft 409 rotatably penetrated on the two mounting seats 408. There are two locking devices 400, and the two locking devices 400 are arranged one-to-one with the two mounting seats 408, and the swing arm bodies 405 of the two locking devices 400 are sleeved on the shaft ends of the linkage shaft 409 extending from the two mounting seats 408 in a one-to-one correspondence, and the lock hooks 402 of the two locking devices 400 are rotatably arranged on the two mounting seats 408 in a one-to-one correspondence. That is, through the arrangement of the linkage frame 407, the linkage of the two locking devices 400 can be realized, which is further conducive to the stable installation of the crushing bin 301 on the material storage box 200. Specifically, two mounting seats 408 can be spaced apart at the bottom of the storage box 200 near the discharge port, the swing arm body 405 of the locking device 400 can be located at the upper front end of the mounting seat 408, and the locking member 402 can be located at the lower rear end of the mounting seat 408.

[0091] Specifically, the storage box 200 is installed on the chassis beam of the transport vehicle body 100, and the crushing bin 301 is installed at the rear of the storage box 200. In order to ensure the sealing effect of the crushing bin 301 and the storage box 200 joint surface and prevent the broken materials from leaking and scattering during operation and transportation, the joint surface of the storage box 200 and the crushing bin 301 is designed to form a certain angle with the vertical plane, and a sealing strip is provided between the joint surfaces. The crushing knife roller of the crushing device 302 is driven by the crushing motor device 600, and the feed roller is driven by the feed motor device.

[0092] During the crushing operation, the vehicle shutter door at the rear of the crushing bin 301 is opened, the folding feed slot of the crushing device 302 is lowered, and the feed motor device and the crushing motor device 600 of the crushing device 302 are started to crush the branches. The crushed materials are transported to the inside of the storage box 200 through the opening of the sealing end plate 305 under the centrifugal force of the high-speed rotating knife roller and the airflow generated by the auxiliary blades of the knife roller. During the crushing operation, in order to enhance the stability of the crushing bin 301 and avoid the up and down vibration of the crushing device 302 when crushing large-diameter branches, an outrigger oil cylinder 304 is set at the connection between the crushing bin 301 and the storage box 200. During the crushing operation, the outrigger oil cylinder 304 is reliably supported to the ground. During the unloading operation, the locking cylinder 404 is controlled to drive the lock hook 402 to disengage from the lock seat 403, the lifting cylinder 303 is controlled to lift the crushing bin 301 to the highest position, and the unloading cylinder 202 is controlled to drive the unloading device 201 to move backward inside the storage box 200 to push the crushed material out of the storage box 200.

[0093] The branch crushing vehicle of the present invention adopts a working mode of feeding from the rear of the vehicle, which occupies less lanes during operation and has little impact on road traffic. The unloading device 201 pushes the crushed materials from the rear of the storage box 200, and the vehicle is stable and has good site applicability for unloading.

[0094] See also Figure 7 and Figure 8 In an embodiment of the present invention, the material crushing vehicle also includes a hydraulic drive system, which includes a variable pump device 500, a crushing motor device 600 and a pressure regulating device 700. The crushing motor device 600 is connected to the variable pump device 500 through a crushing drive oil circuit 800 and is used to drive the crushing equipment 300. The pressure regulating device 700 is used to divert and reduce the pressure of the crushing drive oil circuit 800 when the oil pressure in the crushing drive oil circuit 800 exceeds the preset maximum oil pressure.

[0095] Specifically, in the crushing drive oil circuit 800, the oil outlet of the variable pump device 500 is connected to the oil inlet of the crushing motor device 600. After obtaining power, the variable pump device 500 can provide hydraulic oil to the crushing motor device 600 according to actual work requirements to drive the crushing motor device 600 to rotate. The crushing motor device 600 is connected to the crushing equipment 300 through a coupling or a transmission shaft, a flange, etc. When the crushing motor device 600 rotates, it drives the crushing cutter disc 601 of the crushing equipment 300 to work. The oil outlet of the crushing motor device 600 is connected to the oil inlet of the variable pump device 500 so that the hydraulic oil can be returned to the crushing motor device 600. Then, the hydraulic oil is closed and circulated in the pipeline of the hydraulic drive system to form a closed system.

[0096] At the same time, the crushing motor device 600 corresponds to different states under different working requirements. When the crushing equipment 300 is crushing materials, the crushing motor device 600 is in the starting state, the crushing motor device 600 starts to rotate and the speed continues to increase to the working speed, entering the working state to drive the crushing disc 601 to perform the crushing work. When the current material is crushed, the crushing motor device 600 enters the braking state, and enters the standby or shutdown state after the braking is completed, until the next material enters the starting state again, the crushing motor device 600 starts to rotate and the speed continues to increase to the working speed to enter the working state again, to drive the crushing disc 601 to perform the crushing work. However, in the case of acceleration, deceleration, braking or large changes in cutting loads, the existing material crushing vehicles will form impact pressure in the hydraulic drive system, causing the pump and motor to be frequently subjected to impact loads, causing fatigue damage.

[0097] A pressure regulating device 700 is additionally provided in the pulverizing drive oil circuit 800 of the hydraulic drive system. When the oil pressure in the pulverizing drive oil circuit 800 exceeds the preset maximum oil pressure, the pressure regulating device 700 can divert the pulverizing drive oil circuit 800 between the variable pump device 500 and the pulverizing motor device 600, thereby reducing the oil pressure in the pulverizing drive oil circuit 800, smoothing the system pressure pulsation, and reducing the pressure shock during starting, deceleration, braking and operation, thereby achieving the purpose of prolonging the service life of the variable pump device 500 and the pulverizing motor device 600. Specifically, the pressure regulating device 700 can be connected to the pulverizing drive oil circuit 800 between the oil outlet of the variable pump device 500 and the oil inlet of the pulverizing motor device 600, and the pressure regulating device 700 is used to regulate the system pressure shock generated when the pulverizing motor device 600 is in a fast start or working state. The pressure regulating device 700 can also be connected to the pulverizing drive oil circuit 800 between the oil outlet of the pulverizing motor device 600 and the oil inlet of the variable pump device 500, and the pressure regulating device 700 is used to regulate the system pressure shock generated when the pulverizing motor device 600 is in a deceleration or braking state. Among them, the preset maximum oil pressure can be preset according to actual conditions, and the preset maximum oil pressure can be different when the pulverizing motor device 600 is in different working states.

[0098] Specifically, the transport vehicle body 100 is equipped with a chassis engine, and the variable pump device 500 can be connected to the chassis engine through a full-power power take-off device, and the full-power power take-off device can pick up the power of the chassis engine at full power, so that when the variable pump device 500 drives the crushing motor device 600 to work, the power of the chassis engine can be fully utilized. Compared with the driving method of configuring an independent engine and breaking the axle to take power in the prior art, the purpose of reducing manufacturing costs can be achieved, and compared with the driving method of taking power from the side window of the gearbox, the purpose of improving working efficiency can be achieved. More specifically, the full-power power take-off device can be a sandwich power take-off or a full-power power take-off.

[0099] like Figure 7 As shown, in one embodiment of the present invention, the crushing drive oil circuit 800 includes: a first oil circuit 801 and a second oil circuit 802, the first oil circuit 801 is connected to the oil inlet of the crushing motor device 600 and the oil outlet of the variable pump device 500, and the second oil circuit 802 is connected to the oil outlet of the crushing motor device 600 and the oil inlet of the variable pump device 500;

[0100] The pressure regulating device 700 includes a pressure regulating oil circuit, a first proportional relief valve 703 and a check valve 702. The pressure regulating oil circuit connects the first oil circuit 801 and the second oil circuit 802. The first proportional relief valve 703 and the check valve 702 are arranged on the pressure regulating oil circuit, and the check valve 702 is used to set the oil flow direction of the pressure regulating oil circuit to flow from the second oil circuit 802 to the first oil circuit 801. The first proportional relief valve 703 is configured as follows:

[0101] When the pulverizing motor device 600 is in the natural stop braking mode, the control sets the overflow pressure to the first overflow pressure;

[0102] In case the pulverizing motor device 600 is in the emergency stop braking mode, the control sets the relief pressure to a second relief pressure, wherein the second relief pressure is greater than the first relief pressure.

[0103] It should be noted that the first proportional relief valve 703 can play a safety protection role in the system. When the system pressure exceeds the set relief pressure of the first proportional relief valve 703, the safety valve in the first proportional relief valve 703 will open, and a part of the oil in the system will be discharged into the low-pressure circuit, so that the system pressure does not exceed the allowable value, thereby ensuring that the system does not have an accident due to excessive pressure. The one-way valve 702 is used to prevent the oil from flowing in the opposite direction. By adding a pressure regulating oil circuit to connect the first oil circuit 801 and the second oil circuit 802, and setting a first overflow valve on the pressure regulating oil circuit and setting the oil flow direction of the pressure regulating oil circuit to flow from the second oil circuit 802 to the first oil circuit 801 with a one-way valve 702, when the grinding motor device 600 is in a deceleration or braking state, part of the braking energy can be consumed through the overflow function of the first proportional overflow valve 703, and the pressure regulating oil circuit can also divert the hydraulic oil in the second oil circuit 802 to the first oil circuit 801, and can be supplemented to the oil inlet of the grinding motor device 600, so as to reduce the hydraulic oil returned to the variable pump device 500.

[0104] Specifically, the pulverizing motor device 600 can set different braking modes according to different working conditions. In the present embodiment, the braking modes of the pulverizing motor device 600 include a natural stop braking mode and an emergency stop braking mode. When the pulverizing blade disc 601 is allowed to stop at medium or low speed, the pulverizing motor device 600 enters the natural stop braking mode. In the natural stop braking mode, the overflow pressure of the first proportional relief valve 703 can be set to the first overflow pressure, and the first overflow pressure can be set to a lower pressure value to meet the diversion demand of the hydraulic oil input to the variable pump device 500; when the pulverizing blade disc 601 needs to stop quickly, the pulverizing motor device 600 enters the emergency stop braking mode. In the emergency stop braking mode, the overflow pressure of the first proportional relief valve 703 can be set to the second overflow pressure, and the second overflow pressure can be set to a higher pressure value. The second overflow pressure is greater than the first overflow pressure, so that the pressure regulating device 700 can provide a larger braking torque to achieve emergency stop.

[0105] More specifically, in an embodiment of the present invention, the hydraulic drive system also includes: a controller, which is configured to: determine the braking mode of the crushing motor device 600; when the crushing motor device 600 is in the natural stop braking mode, control the first proportional relief valve 703 to set the relief pressure to the first relief pressure; when the crushing motor device 600 is in the emergency stop braking mode, control the first proportional relief valve 703 to set the relief pressure to the second relief pressure, wherein the second relief pressure is greater than the first relief pressure.

[0106] In the embodiment of the present invention, the pressure regulating device 700 further includes a throttle valve 701 disposed on the pressure regulating oil circuit. It should be noted that the throttle valve 701 is a valve that controls the flow of fluid by changing the throttle cross section or throttle length, so that the throttle function of the throttle valve 701 can be further utilized to consume the braking energy generated by the grinding motor device 600. Specifically, the throttle valve 701 is located between the first proportional relief valve 703 and the one-way valve 702.

[0107] Continue to see Figure 7In an embodiment of the present invention, the pressure regulating device 700 also includes a first accumulator 704, and the first accumulator 704 is connected to the crushing drive oil circuit 800. It should be noted that the accumulator is an energy storage device. It converts the energy in the system into compression energy or potential energy and stores it at an appropriate time. When the system needs it, it converts the compression energy or potential energy into hydraulic or air pressure energy and releases it to replenish the system. When the system pressure increases instantaneously, it can absorb this part of the energy to ensure that the pressure of the entire system is normal. Then, by adding a first accumulator 704 to the crushing drive oil circuit 800, when the oil in the crushing drive oil circuit 800 exceeds the demand, the pulsating flow can be absorbed by the first accumulator 704 to reduce the pressure shock. Specifically, the number of first accumulators 704 can be two, one of which can be connected to the first oil circuit 801 in the crushing drive oil circuit 800, so that when the crushing motor device 600 is in an accelerated start-up or high-speed operation state, the pulsating flow in the first oil circuit 801 can be absorbed, and the other first accumulator 704 can be connected to the second oil circuit 802 in the crushing drive oil circuit 800, so that when the crushing motor device 600 is in a deceleration or braking state, the pulsating flow in the second oil circuit 802 can be absorbed.

[0108] like Figure 8 As shown, in the embodiment of the present invention, the crushing drive oil circuit 800 includes: a first oil circuit 801 and a second oil circuit 802, the first oil circuit 801 is connected to the oil inlet of the crushing motor device 600 and the oil outlet of the variable pump device 500, and the second oil circuit 802 is connected to the oil outlet of the crushing motor device 600 and the oil inlet of the variable pump device 500;

[0109] The pressure regulating device 700 includes: a second accumulator 705 and a first solenoid valve 706 and / or a second solenoid valve 707. The first solenoid valve 706 connects the first oil circuit 801 and the second accumulator 705. The first solenoid valve 706 is used to be energized when the crushing motor device 600 is in an acceleration start state, so that the first oil circuit 801 is connected to the second accumulator 705; the second solenoid valve 707 connects the second oil circuit 802 and the second accumulator 705. The second solenoid valve 707 is used to be energized when the crushing motor device 600 is in a braking state, so that the second oil circuit 802 is connected to the second accumulator 705. It should be noted that the solenoid valve controls the fluid, and the flow of hydraulic oil at both ends of the solenoid valve can be achieved through the solenoid valve. The second accumulator 705 is connected to the first oil circuit 801 through the first solenoid valve 706 and to the second oil circuit 802 through the second solenoid valve 707. When the grinding motor device 600 is in the acceleration start state, the first solenoid valve 706 can be controlled to be energized and the second solenoid valve 707 can be de-energized, so that the first oil circuit 801 is connected to the second accumulator 705, and the second accumulator 705 can absorb the pulsating flow in the first oil circuit 801; when the grinding motor device 600 is in the braking state, the second solenoid valve 707 can be controlled to be energized and the first solenoid valve 706 can be de-energized, so that the second oil circuit 802 is connected to the second accumulator 705, and the second accumulator 705 can absorb the pulsating flow in the second oil circuit 802.

[0110] In the embodiment of the present invention, the pressure regulating device 700 further includes a second proportional relief valve 710, a first end of the second proportional relief valve 710 is connected to the oil outlet of the first solenoid valve 706 and / or the second solenoid valve 707, a second end of the second proportional relief valve 710 is directed to the oil replenishment circuit of the variable pump device 500, and the second proportional relief valve 710 is configured as follows:

[0111] When the pulverizing motor device 600 is in the natural stop braking mode, the control sets the overflow pressure to the first overflow pressure;

[0112] When the pulverizing motor device 600 is in the emergency stop braking mode, the overflow pressure is controlled to be set to a second overflow pressure, wherein the second overflow pressure is greater than the first overflow pressure;

[0113] And / or the second proportional relief valve 710 is further configured as:

[0114] In the case where the pulverizing motor device 600 is in the acceleration start state, the control sets the relief pressure to the third relief pressure.

[0115] It should be noted that the second proportional relief valve 710 can play a role in safety protection in the system. When the system pressure exceeds the specified value, the safety valve in the second proportional relief valve 710 opens, and a part of the oil in the system is discharged into the oil replenishment system, so that the system pressure does not exceed the allowable value, thereby ensuring that the system does not cause accidents due to excessive pressure. In addition, the overflow pressure of the second proportional relief valve 710 can be set to limit the storage pressure of the second accumulator 705, thereby protecting the second accumulator 705. The second proportional relief valve 710 is connected to the oil outlet of the first solenoid valve 706 and / or the second solenoid valve 707, that is, the second proportional relief valve 710 is connected to the oil inlet of the second accumulator 705. The maximum relief pressure set by the second proportional relief valve 710 should not exceed the maximum storage pressure of the second accumulator 705. When the oil pressure of the pulsating flow in the second accumulator 705 reaches the relief pressure set by the second proportional relief valve 710, the pulsating flow begins to flow from the second proportional relief valve 710 to the variable pump device 500.

[0116] Specifically, the pulverizing motor device 600 can set different braking modes according to different working conditions. In the present embodiment, the braking modes of the pulverizing motor device 600 include a natural stop braking mode and an emergency stop braking mode. When the pulverizing blade disc 601 is allowed to stop at medium or low speed, the pulverizing motor device 600 enters the natural stop braking mode. In the natural stop braking mode, the overflow pressure of the second proportional overflow valve 710 can be set to the first overflow pressure, and the first overflow pressure can be set to a lower pressure value to meet the diversion demand of the hydraulic oil input to the variable pump device 500; when the pulverizing blade disc 601 needs to stop quickly, the pulverizing motor device 600 enters the emergency stop braking mode. In the emergency stop braking mode, the overflow pressure of the second proportional overflow valve 710 can be set to the second overflow pressure, and the second overflow pressure can be set to a higher pressure value. The second overflow pressure is greater than the first overflow pressure, so that the pressure regulating device 700 can provide a larger braking torque to achieve emergency stop. In addition, when the pulverizing motor device 600 is in the acceleration start state, the overflow pressure of the second proportional overflow valve 710 can also be set to a third overflow pressure, and the third overflow pressure can also be set to a higher pressure value.

[0117] More specifically, in an embodiment of the present invention, the hydraulic drive system also includes: a controller, which is configured to: determine the working mode of the crushing motor device 600; when the crushing motor device 600 is in the natural stop braking mode, control the first proportional relief valve 703 to set the relief pressure to the first relief pressure; when the crushing motor device 600 is in the emergency stop braking mode, control the first proportional relief valve 703 to set the relief pressure to the second relief pressure, wherein the second relief pressure is greater than the first relief pressure; when the crushing motor device 600 is in the acceleration start mode, control the second proportional relief valve 710 to set the relief pressure to the third relief pressure.

[0118] In the embodiment of the present invention, the pressure regulating device 700 further includes a cooler 711, and the cooler 711 is connected between the second end of the second proportional relief valve 710 and the oil supply oil circuit of the variable pump device 500. The cooler 711 can cool the hydraulic oil flowing out of the second proportional relief valve 710 to prevent the overflowing heated oil from damaging the hydraulic components in the variable pump device 500.

[0119] Continue to see Figure 8 In the embodiment of the present invention, the pressure regulating device 700 includes a third solenoid valve 708 and an energy storage pressure sensor 712. The oil inlet of the third solenoid valve 708 is connected to the second oil circuit 802, and the oil outlet of the third solenoid valve 708 is connected to the oil circuit between the second proportional relief valve 710 and the cooler 711. The energy storage pressure sensor 712 is connected to the oil circuit between the second accumulator 705 and the first solenoid valve 706, and is used to detect the release oil pressure of the second accumulator 705. The first solenoid valve 706 and the third solenoid valve 708 are used to be energized when the crushing motor device 600 is in a re-acceleration start-up state and the release oil pressure is greater than the preset minimum oil pressure, so that the second accumulator 705 can drive the crushing motor device 600.

[0120] When the pulverizing motor device 600 is in the re-operation state, since the second accumulator 705 has stored a part of the energy in the last operation process of the pulverizing motor device 600, the energy stored in the second accumulator 705 can be used as the hydraulic oil source for the re-operation state of the pulverizing motor device 600. The second oil circuit 802 is connected to the oil replenishment circuit of the oil replenishment pump 502 through the third solenoid valve 708 and the cooler 711 in sequence. When the pulverizing motor device 600 is in the working state again and the releasable oil pressure stored in the second accumulator 705 is greater than the preset minimum oil pressure of the system, the first solenoid valve 706 and the third solenoid valve 708 are controlled to be energized, so that the second oil circuit 802 is connected to the oil replenishment circuit of the oil replenishment pump 502 through the third solenoid valve 708 and the cooler 711 in sequence, so that the hydraulic oil in the second accumulator 705 enters the oil inlet of the pulverizing motor device 600 through the first solenoid valve 706, drives the pulverizing motor device 600 to work, and makes the hydraulic oil output from the oil outlet of the pulverizing motor device 600 enter the oil replenishment circuit of the oil replenishment pump 502 through the third solenoid valve 708 and the cooler 711.

[0121] Furthermore, the preset minimum oil pressure refers to the minimum working pressure of the hydraulic drive system under normal operation. Since the energy stored in the second accumulator 705 is limited, when the energy in the second accumulator 705 is insufficient to support the operation of the crushing motor device 600, it is necessary to start the variable pump device 500 to work. By setting an accumulator pressure sensor 712 connected between the second accumulator 705 and the first solenoid valve 706 to detect the working pressure between the second accumulator 705 and the first oil circuit 801, the controller controls the third solenoid valve 708 to close when the working pressure detected by the accumulator pressure sensor 712 is less than the preset minimum oil pressure, so that the connection between the second oil circuit 802 and the cooler 711 is disconnected, and the variable pump device 500 is controlled to work.

[0122] In the embodiment of the present invention, the pressure regulating device 700 further includes a fourth solenoid valve 709, and the second accumulator 705 is connected to the auxiliary working device of the material crushing vehicle through the fourth solenoid valve 709. The fourth solenoid valve 709 is used to control the power supply when the auxiliary working device block is in the working state, so that the second accumulator 705 is connected to the auxiliary working device.

[0123] It should be noted that the auxiliary working device may include modules such as a feed motor device, a unloading cylinder 202, and a leg cylinder 304. The second accumulator 705 is connected to the auxiliary working device through a fourth solenoid valve 709. When the auxiliary working device is in a working state, the fourth solenoid valve 709 is controlled to open so that the second accumulator 705 is connected to the auxiliary working device. The braking energy recovered by the second accumulator 705 is reused, which can reduce engine energy consumption and improve system energy efficiency.

[0124] Please see again Figure 7 and Figure 8 In an embodiment of the present invention, the hydraulic drive system also includes a pressure detection device (pressure cut-off valve 506 and / or a crushing pressure sensor 507), which is used to control the displacement of the variable pump device 500 to stop increasing when the crushing motor device 600 is in an accelerated start-up state and detects that the oil pressure at the oil outlet of the variable pump device 500 exceeds a preset maximum oil pressure.

[0125] It should be noted that the preset maximum oil pressure of the system refers to the maximum working pressure of the hydraulic drive system under normal operation. When the crushing motor device 600 is in the acceleration start state, the displacement of the variable pump device 500 gradually increases, and the hydraulic oil output from the oil outlet of the variable pump device 500 increases, thereby causing the speed of the crushing motor device 600 to gradually increase from 0. Considering the large inertia characteristics of the crushing blade 601, when the output flow of the main oil pump 501 of the variable pump device 500 exceeds the flow required by the crushing motor device 600, the oil pressure at the oil outlet of the variable pump device 500 gradually rises, and when it exceeds the preset maximum oil pressure of the system, it will cause the system flow to be mismatched and the power level overflow will occur, causing energy loss.

[0126] By adding a pressure detection device to the hydraulic drive system, the pressure detection device can detect the oil pressure at the oil outlet of the variable pump device 500. When the grinding motor device 600 is in the acceleration start state and detects that the oil pressure exceeds the preset maximum oil pressure of the system, the displacement of the variable pump device 500 can be controlled to stop increasing until the system pressure drops below the preset maximum oil pressure, thereby avoiding power level overflow due to system flow mismatch and achieving the purpose of reducing energy consumption.

[0127] In an embodiment of the present invention, the variable displacement pump device 500 comprises:

[0128] A main oil pump 501, the oil outlet of the main oil pump 501 is connected to the oil inlet of the grinding motor device 600 through the first oil path 801, and the oil inlet of the main oil pump 501 is connected to the oil outlet of the grinding motor device 600 through the second oil path 802;

[0129] An oil replenishment pump 502, the oil replenishment pump 502 is arranged on an oil replenishment oil circuit connected to the oil tank 509;

[0130] A variable electromagnetic valve 503, wherein the oil inlet of the variable electromagnetic valve 503 is connected to the oil outlet of the oil replenishment pump 502;

[0131] And a variable piston 504, the piston chamber of the variable piston 504 is connected to the oil outlet of the variable solenoid valve 503, and the piston rod 325 of the variable piston 504 is used to move under the drive of the hydraulic oil input by the variable solenoid valve 503 to adjust the displacement of the main oil pump 501.

[0132] Specifically, a first oil circuit 801 in the pulverizing drive oil circuit 800 is formed between the oil outlet of the main oil pump 501 and the oil inlet of the pulverizing motor device 600, and a second oil circuit 802 in the pulverizing drive oil circuit 800 is formed between the oil outlet of the pulverizing motor device 600 and the oil inlet of the main oil pump 501. The oil suction port of the replenishing oil pump 502 sucks oil from the oil tank 509. A filter 508 is provided between the oil suction port of the replenishing oil pump 502 and the oil tank 509 to facilitate filtering of the oil. The oil outlet of the replenishing oil pump 502 is respectively connected to the high-pressure relief valve 505 of the oil outlet and oil inlet of the main oil pump 501, so as to replenish oil to the oil outlet and oil inlet of the main oil pump 501 to avoid cavitation in the pipeline. In addition, the oil outlet of the replenishing oil pump 502 is also connected to the oil inlet of the variable solenoid valve 503, so as to provide hydraulic oil to the variable solenoid valve 503 and the variable piston 504. In this embodiment, it should be noted that the oil outlet of the variable solenoid valve 503 is connected to the variable piston 504, and the displacement of the main pump can be adjusted by moving the variable piston 504. The linkage relationship between the variable piston 504 and the main pump is known to technical personnel in the relevant field and will not be repeated here.

[0133] In addition, the second end of the second proportional relief valve 710 can flow to the oil outlet of the replenishing pump 502 through the cooler 711 and be connected to the replenishing oil circuit of the replenishing pump 502, so that when the second accumulator 705 reaches the maximum energy storage pressure, the hydraulic oil overflowing from the second proportional relief valve 710 can enter the replenishing oil circuit of the replenishing pump 502 after cooling, and the hydraulic oil can be reconnected to the internal circulation of the hydraulic drive system while reducing the oil temperature of the hydraulic oil. In one embodiment, the variable pump device 500 may also include a low-pressure relief valve 504, and the low-pressure relief valve 504 is connected to the oil outlet of the replenishing pump 502, so that the pressure of the hydraulic oil flowing out from the second end of the second proportional relief valve 710 through the cooler 711 and connected to the replenishing oil circuit of the replenishing pump 502 overflows into the oil tank 509 when the pressure reaches the set value of the low-pressure relief valve 504.

[0134] Furthermore, when in the no-load standby state, the variable solenoid valve 503 is not energized and is in the middle position. The control oil on both sides of the variable piston 504 returns to the oil tank 509 through the variable solenoid valve 503. The variable piston 504 is in the zero displacement position under the action of the spring, the main oil pump 501 does not output flow, and the crushing motor device 600 does not rotate. When in the starting acceleration operation state, the variable solenoid valve 503 is energized and the energized current gradually increases at a certain ratio. As the energized current increases, the variable solenoid valve 503 reaches the variable piston 504. The control oil in the right chamber gradually increases, and the return oil reaching the left chamber of the variable piston 504 gradually decreases. The variable piston 504 moves to the left, the displacement of the main oil pump 501 gradually increases, and the hydraulic oil output from the oil outlet of the main oil pump 501 gradually increases, thereby causing the rotation speed of the crushing motor device 600 to gradually increase from 0. Considering the large inertia characteristics of the crushing cutter disc 601, when the displacement of the main oil pump 501 increases too fast, the output flow of the main oil pump 501 exceeds the flow required by the crushing motor device 600, and the oil pressure at the oil outlet of the variable pump device 500 will rise.

[0135] Among them, the pressure detection device can be a pressure cut-off valve 506, the first end of the pressure cut-off valve 506 (built-in shuttle valve) is connected to the first oil circuit 801 and the second oil circuit 802 respectively, the second end of the pressure cut-off valve 506 is connected to the oil circuit between the oil replenishment pump 502 and the variable solenoid valve 503, and the third end of the pressure cut-off valve 506 leads to the oil tank 509. The pressure cut-off valve 506 is used to control the third end to be connected to the oil tank 509 when the grinding motor device 600 is in the acceleration start state and detects that the oil pressure on the first oil circuit 801 exceeds the preset maximum oil pressure, so as to reduce the oil supply pressure of the oil replenishment pump 502 to the variable solenoid valve 503. The first end of the pressure cut-off valve 506 is used to use the preset maximum oil pressure as its own set pressure. When the first end of the pressure cut-off valve 506 determines that the oil pressure on the first oil circuit 801 exceeds the set pressure, that is, the preset maximum oil pressure, the pressure cut-off valve 506 will reduce the oil supply pressure of the make-up pump 502 to the variable solenoid valve 503, and the oil supply of the make-up pump 502 will return to the oil tank 509 through the pressure cut-off valve 506. As a result, the control pressure of the variable piston 504 no longer increases, and the control oil no longer enters the right chamber of the variable piston 504, and the displacement of the main oil pump 501 no longer increases until the system pressure drops below the set pressure of the pressure cut-off valve 506, thereby avoiding power level overflow due to system flow mismatch. The set pressure of the pressure cut-off valve 506 should be lower than the set overflow pressure of the high-pressure overflow valve 505, and higher than the pressure required for normal cutting operations. It should be noted that the variable pump device 500 also includes two high-pressure relief valves 505, one of which is located between the oil outlets of the supplementary oil pump 502 and the main oil pump 501, and the other is located between the oil inlet of the supplementary oil pump 502 and the main oil pump 501, and can be used as an anti-shock valve. If the pressure of the hydraulic drive system rises to the set pressure of the high-pressure relief valve 505, the high-pressure relief valve 505 overflows. If it overflows from here for a long time and the overflowing oil is overheated at this time, it will cause damage to the hydraulic components in the variable pump device 500. Therefore, the set pressure of the pressure cut-off valve 506 needs to be set to be less than the set pressure of the high-pressure relief valve 505.

[0136] The pressure detection device can also be a crushing pressure sensor 507, which is arranged on the first oil circuit 801, and is used to control the current of the variable electromagnetic valve 503 to stop increasing when the crushing motor device 600 is in the acceleration start state and detects that the oil pressure on the first oil circuit 801 exceeds the preset maximum oil pressure. That is, the crushing pressure sensor 507 can be directly arranged on the first oil circuit 801 to detect the oil pressure on the first oil circuit 801, and when the oil pressure exceeds the preset maximum oil pressure, the current of the variable electromagnetic valve 503 is controlled to stop increasing. When the current of the variable electromagnetic valve 503 stops increasing, the control pressure of the variable piston 504 no longer increases, and the displacement of the main oil pump 501 no longer increases until the system pressure drops below the preset maximum oil pressure, thereby avoiding the system flow mismatch and the power level overflow.

[0137] In addition, in one embodiment, the hydraulic drive system may further include a crushing speed sensor 602 disposed on the crushing motor device 600, which detects the speed of the crushing motor device 600 in real time and uploads it to the controller. When the controller detects that the working pressure of the hydraulic drive system has reached the preset maximum oil pressure and the speed of the crushing motor device 600 is 0 for a few seconds, it determines that the crushing cutter disc 601 has been stuck; at this time, the current of the variable electromagnetic valve 503 is quickly returned to 0, or the pressure cut-off valve 506 is automatically activated. So that the swash plate of the main oil pump 501 returns to the 0 displacement position, avoiding the generation of power level overflow loss and reducing energy consumption.

[0138] The above-mentioned hydraulic drive system limits the system pressure during the start-up or acceleration of the crushing motor device 600 by setting a pressure cut-off valve 506 or based on a crushing pressure sensor 507, so as to avoid the overflow of the high-pressure relief valve 505 caused by the system pressure being too high, causing the hydraulic oil temperature in the hydraulic circuit to overheat and the temperature rise to be too high. By setting an additional proportional relief valve, a throttle valve 701 and an accumulator, the system pressure of the crushing motor device 600 during start-up or braking is dynamically adjusted to smooth the flow pulsation of the hydraulic circuit of the hydraulic drive system, reduce the operating pressure shock and the braking pressure shock, speed up the braking process, recycle and utilize the braking energy, reduce energy consumption, and can also realize the reuse of braking energy according to the storage capacity of the accumulator, reduce engine energy consumption, and improve system energy efficiency.

[0139] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0140] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0141] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0142] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A material crushing vehicle, characterized in that: The material crushing vehicle comprises: Transport vehicle body; A material storage box is arranged on the transport vehicle body and is formed with a discharge port at the rear end; The pulverizing device comprises a pulverizing bin, a pulverizing device and a lifting member, wherein the pulverizing bin is movably arranged at the rear end of the material storage box and is used to seal the discharge port, the pulverizing device is arranged in the pulverizing bin and is used to pulverize the material and guide the pulverized material into the material storage box, the lifting member is arranged on the material storage box and connected to the pulverizing bin, and the lifting member is used to lift the pulverizing bin upward to open the discharge port; A discharge device, movably disposed in the storage box and used to push the crushed material out of the discharge port; The material crushing vehicle also includes a hydraulic drive system, which includes a variable pump device, a crushing motor device and a pressure regulating device. The crushing motor device is connected to the variable pump device through a crushing drive oil circuit and is used to drive the crushing device. The pressure regulating device is used to shunt and reduce the pressure of the crushing drive oil circuit when the oil pressure in the crushing drive oil circuit exceeds a preset maximum oil pressure; The pulverizing drive oil circuit includes: a first oil circuit and a second oil circuit, the first oil circuit communicating with the oil inlet of the pulverizing motor device and the oil outlet of the variable pump device, and the second oil circuit communicating with the oil outlet of the pulverizing motor device and the oil inlet of the variable pump device; The pressure regulating device comprises a pressure regulating oil circuit, a first proportional relief valve and a one-way valve, the pressure regulating oil circuit connects the first oil circuit and the second oil circuit, the first proportional relief valve and the one-way valve are arranged on the pressure regulating oil circuit, and the one-way valve is used to set the oil flow direction of the pressure regulating oil circuit to flow from the second oil circuit to the first oil circuit, and the first proportional relief valve is configured as follows: When the pulverizing motor device is in a natural stop braking mode, controlling the overflow pressure to be set to a first overflow pressure; When the pulverizing motor device is in an emergency stop braking mode, the relief pressure is controlled to be set to a second relief pressure, wherein the second relief pressure is greater than the first relief pressure.

2. The material crushing vehicle according to claim 1, characterized in that: The front end of the crushing bin is movably hinged to the rear end of the storage box through a pin shaft, the lifting member is a lifting cylinder, the lower end of the lifting cylinder is movably hinged to the storage box, and the upper end of the lifting cylinder is connected to the crushing bin.

3. The material crushing vehicle according to claim 1, characterized in that: The discharge port is arranged to be inclined from bottom to top toward the front end of the storage box.

4. The material crushing vehicle according to claim 3, characterized in that: A sealing end plate is provided at the front end of the crushing bin, and the sealing end plate is inclined from bottom to top toward the front end of the storage box and is used to seal the discharge port. The discharge port of the crushing equipment extends to the storage box through the sealing end plate.

5. The material crushing vehicle according to claim 1, characterized in that: The inner wall of the material storage box is paved with a guide rail in the direction from the front end of the material storage box toward the rear end of the material storage box. The unloading device includes a unloading cylinder and a unloading rack. The unloading rack is movably arranged on the guide rail. One end of the unloading cylinder is connected to the front end of the material storage box, and the other end of the unloading cylinder is connected to the unloading rack.

6. The material crushing vehicle according to claim 1, characterized in that: The material crushing vehicle also includes a locking device, which includes a driving mechanism arranged at the lower part of the storage box, a locking hook connected to the driving mechanism, and a hook seat arranged on the crushing bin and forming a locking opening. The driving mechanism is used to drive the locking hook to rotate so that the locking hook enters or exits the locking opening.

7. The material crushing vehicle according to claim 6, characterized in that: The locking hook member is rotatably arranged on the material storage box, and the driving mechanism comprises a locking cylinder, a swing arm body and a connecting rod. The swing arm body is rotatably arranged on the material storage box, one end of the locking cylinder is movably hinged to the lower part of the material storage box, the other end of the locking cylinder is connected to the swing arm body, and the two ends of the connecting rod are respectively connected to the swing arm body and the locking hook member, the rotation axis of the swing arm body and the connection axis of the locking cylinder and the swing arm body are not colinearly arranged, and the rotation axis of the locking hook member and the connection axis of the connecting rod and the locking hook member are not colinearly arranged.

8. The material crushing vehicle according to claim 7, characterized in that: A linkage frame is arranged on the material storage box, and the linkage frame includes two mounting seats respectively arranged on both sides of the material storage box and a linkage shaft rotatably passed through the two mounting seats. There are two locking devices, and the two locking devices are arranged in a one-to-one correspondence with the two mounting seats, and the swing arm bodies of the two locking devices are correspondingly sleeved on the shaft ends of the linkage shaft extending from the two mounting seats, and the locking hook members of the two locking devices are correspondingly rotatably arranged on the two mounting seats.

9. The material crushing vehicle according to any one of claims 1 to 8, characterized in that: The pressure regulating device further includes a first accumulator, which is connected to the pulverizing drive oil circuit.

10. The material crushing vehicle according to any one of claims 1 to 8, characterized in that: The hydraulic drive system also includes a pressure detection device, which is used to control the displacement of the variable pump device to stop increasing when the grinding motor device is in an accelerated start-up state and detects that the oil pressure at the oil outlet of the variable pump device exceeds a preset maximum oil pressure.

11. The material crushing vehicle according to claim 10, characterized in that: The variable displacement pump device comprises: A main oil pump, wherein the oil outlet of the main oil pump is connected to the oil inlet of the pulverizing motor device through a first oil passage, and the oil inlet of the main oil pump is connected to the oil outlet of the pulverizing motor device through a second oil passage; An oil replenishment pump, the oil replenishment pump being arranged on an oil replenishment oil circuit connected to the oil tank; A variable solenoid valve, wherein the oil inlet of the variable solenoid valve is connected to the oil outlet of the oil replenishment pump; and a variable piston, wherein the piston chamber of the variable piston is communicated with the oil outlet of the variable solenoid valve, and the piston rod of the variable piston is used to move under the drive of the hydraulic oil input by the variable solenoid valve to adjust the displacement of the main oil pump; Among them, the pressure detection device is a pressure cut-off valve or a crushing pressure sensor, the first end of the pressure cut-off valve is connected to the first oil circuit and the second oil circuit respectively, the second end of the pressure cut-off valve is connected to the oil circuit between the oil replenishment pump and the variable solenoid valve, and the third end of the pressure cut-off valve leads to the oil tank. The pressure cut-off valve is used to control the third end to be connected to the oil tank when the crushing motor device is in an accelerated starting state and detects that the oil pressure in the first oil circuit exceeds the preset maximum oil pressure; the crushing pressure sensor is arranged on the first oil circuit, and is used to control the current of the variable solenoid valve to stop increasing when the crushing motor device is in an accelerated starting state and detects that the oil pressure in the first oil circuit exceeds the preset maximum oil pressure.

12. A material crushing vehicle, characterized in that: The material crushing vehicle comprises: Transport vehicle body; A material storage box is arranged on the transport vehicle body and is formed with a discharge port at the rear end; The pulverizing device comprises a pulverizing bin, a pulverizing device and a lifting member, wherein the pulverizing bin is movably arranged at the rear end of the material storage box and is used to seal the discharge port, the pulverizing device is arranged in the pulverizing bin and is used to pulverize the material and guide the pulverized material into the material storage box, the lifting member is arranged on the material storage box and connected to the pulverizing bin, and the lifting member is used to lift the pulverizing bin upward to open the discharge port; A discharge device, movably disposed in the storage box and used to push the crushed material out of the discharge port; The material crushing vehicle also includes a hydraulic drive system, which includes a variable pump device, a crushing motor device and a pressure regulating device. The crushing motor device is connected to the variable pump device through a crushing drive oil circuit and is used to drive the crushing device. The pressure regulating device is used to shunt and reduce the pressure of the crushing drive oil circuit when the oil pressure in the crushing drive oil circuit exceeds a preset maximum oil pressure; The pulverizing drive oil circuit includes: a first oil circuit and a second oil circuit, the first oil circuit communicating with the oil inlet of the pulverizing motor device and the oil outlet of the variable pump device, and the second oil circuit communicating with the oil outlet of the pulverizing motor device and the oil inlet of the variable pump device; The pressure regulating device comprises: Second accumulator; and a first solenoid valve and / or a second solenoid valve, wherein the first solenoid valve connects the first oil circuit and the second accumulator, and is used to be energized when the pulverizing motor device is in an acceleration start state, so that the first oil circuit is communicated with the second accumulator; the second solenoid valve connects the second oil circuit and the second accumulator, and is used to be energized when the pulverizing motor device is in a braking state, so that the second oil circuit is communicated with the second accumulator; The pressure regulating device further comprises a second proportional relief valve, wherein a first end of the second proportional relief valve is connected to an oil outlet of the first solenoid valve and / or the second solenoid valve, and a second end of the second proportional relief valve leads to an oil replenishment circuit of the variable pump device, and the second proportional relief valve is configured as follows: When the pulverizing motor device is in a natural stop braking mode, controlling the overflow pressure to be set to a first overflow pressure; When the pulverizing motor device is in an emergency stop braking mode, controlling the overflow pressure to be set to a second overflow pressure, wherein the second overflow pressure is greater than the first overflow pressure; And / or the second proportional relief valve is further configured as: When the pulverizing motor device is in an accelerated start state, the relief pressure is controlled to be set to a third relief pressure.

13. The material crushing vehicle according to claim 12, characterized in that: The front end of the crushing bin is movably hinged to the rear end of the storage box through a pin shaft, the lifting member is a lifting cylinder, the lower end of the lifting cylinder is movably hinged to the storage box, and the upper end of the lifting cylinder is connected to the crushing bin.

14. The material crushing vehicle according to claim 12, characterized in that: The discharge port is arranged to be inclined from bottom to top toward the front end of the storage box.

15. The material crushing vehicle according to claim 14, characterized in that: A sealing end plate is provided at the front end of the crushing bin, and the sealing end plate is inclined from bottom to top toward the front end of the storage box and is used to seal the discharge port. The discharge port of the crushing equipment extends to the storage box through the sealing end plate.

16. The material crushing vehicle according to claim 12, characterized in that: The inner wall of the material storage box is paved with a guide rail in the direction from the front end of the material storage box toward the rear end of the material storage box. The unloading device includes a unloading cylinder and a unloading rack. The unloading rack is movably arranged on the guide rail. One end of the unloading cylinder is connected to the front end of the material storage box, and the other end of the unloading cylinder is connected to the unloading rack.

17. The material crushing vehicle according to claim 12, characterized in that: The material crushing vehicle also includes a locking device, which includes a driving mechanism arranged at the lower part of the storage box, a locking hook connected to the driving mechanism, and a hook seat arranged on the crushing bin and forming a locking opening. The driving mechanism is used to drive the locking hook to rotate so that the locking hook enters or exits the locking opening.

18. The material crushing vehicle according to claim 17, characterized in that: The locking hook member is rotatably arranged on the material storage box, and the driving mechanism comprises a locking cylinder, a swing arm body and a connecting rod. The swing arm body is rotatably arranged on the material storage box, one end of the locking cylinder is movably hinged to the lower part of the material storage box, the other end of the locking cylinder is connected to the swing arm body, and the two ends of the connecting rod are respectively connected to the swing arm body and the locking hook member, the rotation axis of the swing arm body and the connection axis of the locking cylinder and the swing arm body are not colinearly arranged, and the rotation axis of the locking hook member and the connection axis of the connecting rod and the locking hook member are not colinearly arranged.

19. The material crushing vehicle according to claim 18, characterized in that: A linkage frame is arranged on the material storage box, and the linkage frame includes two mounting seats respectively arranged on both sides of the material storage box and a linkage shaft rotatably passed through the two mounting seats. There are two locking devices, and the two locking devices are arranged in a one-to-one correspondence with the two mounting seats, and the swing arm bodies of the two locking devices are correspondingly sleeved on the shaft ends of the linkage shaft extending from the two mounting seats, and the locking hook members of the two locking devices are correspondingly rotatably arranged on the two mounting seats.

20. The material crushing vehicle according to any one of claims 12 to 19, characterized in that: The hydraulic drive system also includes a pressure detection device, which is used to control the displacement of the variable pump device to stop increasing when the grinding motor device is in an accelerated start-up state and detects that the oil pressure at the oil outlet of the variable pump device exceeds a preset maximum oil pressure.

21. The material crushing vehicle according to claim 20, characterized in that: The variable displacement pump device comprises: A main oil pump, wherein the oil outlet of the main oil pump is connected to the oil inlet of the pulverizing motor device through a first oil passage, and the oil inlet of the main oil pump is connected to the oil outlet of the pulverizing motor device through a second oil passage; An oil replenishment pump, the oil replenishment pump being arranged on an oil replenishment oil circuit connected to the oil tank; A variable solenoid valve, wherein the oil inlet of the variable solenoid valve is connected to the oil outlet of the oil replenishment pump; and a variable piston, wherein the piston chamber of the variable piston is communicated with the oil outlet of the variable solenoid valve, and the piston rod of the variable piston is used to move under the drive of the hydraulic oil input by the variable solenoid valve to adjust the displacement of the main oil pump; Among them, the pressure detection device is a pressure cut-off valve or a crushing pressure sensor, the first end of the pressure cut-off valve is connected to the first oil circuit and the second oil circuit respectively, the second end of the pressure cut-off valve is connected to the oil circuit between the oil replenishment pump and the variable solenoid valve, and the third end of the pressure cut-off valve leads to the oil tank. The pressure cut-off valve is used to control the third end to be connected to the oil tank when the crushing motor device is in an accelerated starting state and detects that the oil pressure in the first oil circuit exceeds the preset maximum oil pressure; the crushing pressure sensor is arranged on the first oil circuit, and is used to control the current of the variable solenoid valve to stop increasing when the crushing motor device is in an accelerated starting state and detects that the oil pressure in the first oil circuit exceeds the preset maximum oil pressure.

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