CN112268029B - Sidesway distance-adjusting attachment valve - Google Patents
Sidesway distance-adjusting attachment valve Download PDFInfo
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- CN112268029B CN112268029B CN202011026598.3A CN202011026598A CN112268029B CN 112268029 B CN112268029 B CN 112268029B CN 202011026598 A CN202011026598 A CN 202011026598A CN 112268029 B CN112268029 B CN 112268029B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/22—Hydraulic devices or systems
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Abstract
The invention discloses a lateral-moving distance-adjusting accessory valve which comprises a valve body, wherein a flow dividing and collecting valve is arranged on the valve body, an oil inlet valve port and two oil outlet valve ports are arranged on the flow dividing and collecting valve, an OP oil inlet, a CL oil inlet, an SSR oil inlet, an SSL oil inlet, an A output port, a B output port, a C output port and a D output port are arranged on the valve body, and a first oil duct, a second oil duct, a third oil duct, a fourth oil duct, a fifth oil duct, a sixth oil duct, a seventh oil duct, an eighth oil duct, a ninth oil duct and a tenth oil duct are arranged in the valve body. The invention can control the forklift arm to realize four actions of opening, closing, left side moving and right side moving, has simple structure, small volume and low manufacturing cost, and is beneficial to mass assembly and popularization.
Description
Technical Field
The invention relates to the technical field of control valves, in particular to a lateral-moving distance-adjusting accessory valve.
Background
With the further promotion of the industrialization process, the popularity of the forklift is higher and higher. The forklift is generally provided with two forklift arms, and the movement of the forklift arms is driven by a working cylinder. Because the operation demand complexity constantly increases, two fork truck arms on the current fork truck need to realize following four actions: two fork truck arms are kept away from simultaneously (open), two fork truck arms are drawn close simultaneously (fold), two fork truck arms are moved towards the left side simultaneously (the left side moves), two fork truck arms are moved towards the right side simultaneously (the right side moves), in order to make the fork truck arm can realize above-mentioned action among the current fork truck, just can reach above-mentioned purpose through a plurality of control valves and the complicated hydraulic piping system of cooperation generally, the structure is complicated, bulky, manufacturing cost is high, be unfavorable for large batch assembly and popularization.
Disclosure of Invention
The invention aims to provide a lateral-moving distance-adjusting attachment valve which can control a forklift arm to realize four actions of opening, closing, left-side moving and right-side moving, has a simple structure, a small volume and low manufacturing cost, and is beneficial to large-scale assembly and popularization.
The purpose of the invention is realized by the following technical scheme: a sidesway distance-adjusting accessory valve comprises a valve body, wherein a flow distributing and collecting valve is arranged on the valve body, one oil inlet valve port and two oil outlet valve ports are arranged on the flow distributing and collecting valve, an OP oil inlet, a CL oil inlet, an SSR oil inlet, an SSL oil inlet, an A output port, a B output port, a C output port and a D output port are arranged on the valve body, a first oil duct, a second oil duct, a third oil duct, a fourth oil duct, a fifth oil duct, a sixth oil duct, a seventh oil duct, an eighth oil duct, a ninth oil duct and a tenth oil duct are arranged in the valve body, one end of the first oil duct is connected with the OP oil inlet, and the other end of the first oil duct is connected with the oil inlet valve port on the flow distributing and collecting valve; one end of the second oil duct and one end of the third oil duct are respectively connected with two oil outlet valve ports on the flow dividing and collecting valve, one end of the fourth oil duct and one end of the ninth oil duct are simultaneously connected with one end of the third oil duct, the other end of the fourth oil duct and the other end of the ninth oil duct are respectively connected with an A output port and an SSL oil inlet, one end of the fifth oil duct and one end of the tenth oil duct are simultaneously connected with the third oil duct, and the other end of the fifth oil duct and the other end of the tenth oil duct are connected with an D output port and an SSR oil inlet; one end of the sixth oil duct is connected with the CL output port, one end of the seventh oil duct and one end of the eighth oil duct are simultaneously connected with the sixth oil duct, and the other end of the seventh oil duct and the other end of the eighth oil duct are respectively connected with the B output port and the C output port.
In the actual operation process of the forklift, one forklift arm is driven to move through the first working oil cylinder, the other forklift arm is driven to move through the second working oil cylinder, an oil port a and an oil port B are arranged on the first working oil cylinder, an oil port C and an oil port D are arranged on the second working oil cylinder, an output port A and an output port B are respectively connected with the oil port a and the oil port B on the first working oil cylinder, and an output port C and an output port D are respectively connected with the oil port C and the oil port D on the second working oil cylinder. The working principle of the invention is as follows:
when the opening action of the forklift arms is realized, hydraulic oil enters from an OP oil inlet, a CL oil inlet serves as an oil return port, an SSR oil inlet and an SSL oil inlet are in a cut-off state, when the hydraulic oil enters from the OP oil inlet, the flow dividing and collecting valve outputs the hydraulic oil from two oil outlet valve ports according to the proportion of 1; and the returned hydraulic oil flows out from the oil port B and the oil port C to reach the output port B and the output port C, then reaches the CL oil inlet through the seventh oil duct and the eighth oil duct, and finally is discharged through the CL oil inlet to realize the return process of the hydraulic oil.
When the folding action of the forklift arms is realized, hydraulic oil enters from the CL oil inlet, the OP oil inlet serves as an oil return port, the SSR oil inlet and the SSL oil inlet are in a cut-off state, when the hydraulic oil enters from the CL oil inlet, the hydraulic oil reaches the output port B and the output port C through the seventh oil duct and the eighth oil duct respectively, the output hydraulic oil enters from the oil ports B and C of the first working oil cylinder and the second working oil cylinder respectively, piston rods of the first working oil cylinder and the second working oil cylinder retract at the same time, and therefore the folding of the two forklift arms is realized; and the returned hydraulic oil flows out from the oil port a and the oil port D to reach an output port A and an output port D, the hydraulic oil reaching the output port A sequentially passes through a fourth oil duct, a second oil duct, a flow dividing and collecting valve and a first oil duct to reach an OP oil inlet, the hydraulic oil reaching the output port B sequentially passes through a fifth oil duct, a third oil duct, a flow dividing and collecting valve and the first oil duct to reach the OP oil inlet, and finally the hydraulic oil is discharged through the OP oil inlet to realize the return process of the hydraulic oil.
When the left side movement of the forklift arm is realized, hydraulic oil enters from the SSL oil inlet, the SSR oil inlet is used as an oil return port, the OP oil inlet and the CL oil inlet are in a cut-off state, when the hydraulic oil enters from the SSL oil inlet, the hydraulic oil reaches the A output port through the ninth oil duct and the fourth oil duct, the hydraulic oil output from the A output port enters from the a oil port of the first working oil cylinder, a piston rod of the first working oil cylinder extends out, meanwhile, the hydraulic oil in the first working oil cylinder flows out from the B oil port and reaches the B output port, due to the fact that the CL oil inlet is in the cut-off state, the hydraulic oil reaching the B output port can only reach the C output port through the seventh oil duct and the eighth oil duct and then enters from the C oil port of the second working oil cylinder, the piston rod of the second working oil cylinder retracts, therefore the two forklift arms are moved leftwards synchronously, the hydraulic oil in the second working oil cylinder flows out from the D oil port to the D output port and then reaches the SSR oil inlet through the fifth oil duct and the tenth oil duct, and finally the hydraulic oil flows out from the SSR oil inlet, and the hydraulic oil flows out of the SSR oil inlet, and the hydraulic oil return flow is realized.
When the right side of the forklift arm moves, hydraulic oil enters from the SSR oil inlet, the SSL oil inlet serves as an oil return port, the OP oil inlet and the CL oil inlet are in a cut-off state, when the hydraulic oil enters from the SSR oil inlet, the hydraulic oil reaches the D output port through the tenth oil duct and the fifth oil duct, the hydraulic oil output from the D output port enters from the D oil port of the second working oil cylinder, a piston rod of the second working oil cylinder extends out, meanwhile, the hydraulic oil in the second working oil cylinder flows out from the C oil port and reaches the C output port, because the CL oil inlet is in the cut-off state, the hydraulic oil reaching the C output port can only reach the B output port through the eighth oil duct and the seventh oil duct and then enters from the B oil port of the first working oil cylinder, the piston rod of the first working cylinder retracts, the two forklift arms synchronously move to the right side, the hydraulic oil in the first working cylinder flows out from the a oil port and reaches the A output port and then reaches the SSL oil inlet through the fourth oil duct and the ninth oil duct, and finally, the hydraulic oil flows out from the SSL oil inlet to realize the return of the hydraulic oil return.
The invention can control the forklift arm to realize four actions of opening, closing, left side moving and right side moving, has simple structure, small volume and low manufacturing cost, and is beneficial to mass assembly and popularization.
Preferably, the valve body is a rectangular parallelepiped.
Preferably, the A output port, the B output port, the C output port and the D output port are respectively provided with an oil pipe joint assembly, the oil pipe joint assembly comprises a connector head, a butt joint and an oil pipe, the connector head is respectively fixed on the A output port, the B output port, the C output port and the D output port, the connector head is provided with an external thread, the butt joint is provided with a first through hole and a second through hole, a step surface is formed between the first through hole and the second through hole, the inner wall of the second through hole is provided with an internal thread matched with the external thread on the connector head, one end of the oil pipe is provided with a flange, the oil pipe penetrates through the first through hole, the flange is abutted against the step surface, and one end of the flange is provided with a first sealing ring; one end of the connecting pipe head is provided with a second sealing ring, and the connecting pipe head is in threaded connection with the second through hole. The oil pipe joint assembly is used for connecting an oil pipe. When connecting, only need be connected to the connecting pipe head with the butt joint and screw up, sealing connection between oil pipe and the connecting pipe head can be guaranteed to first sealing washer and second sealing washer, avoids the oil leak.
Preferably, a self-tightening assembly is arranged in the second through hole, the self-tightening assembly comprises an outer ring arranged in the second through hole and an inner ring arranged in the outer ring, a first sliding groove is arranged on the inner wall of the second through hole, the first sliding groove is axially arranged along the second through hole, a first convex block is arranged on the outer annular surface of the outer ring, and the first convex block is slidably connected in the first sliding groove; a second sliding groove is formed in the inner ring surface of the outer ring and is arranged along the axial direction of the outer ring, and a second convex block is arranged on the outer ring surface of the inner ring and is connected in the second sliding groove in a sliding mode; the inner ring surface of the inner ring is connected with a plurality of blades arranged along the radial direction of the inner ring, and one end of each blade is rotatably connected to the inner ring; and a first ejector rod and a second ejector rod which correspond to the paddle are arranged on the inner annular surface of the outer ring, and the first ejector rod and the second ejector rod are respectively positioned on two sides of the paddle. When hydraulic oil flows through the self-tightening mechanism, the paddle generates a torque to the inner ring under the action of the hydraulic oil, the direction of the torque is the same as the screwing direction of the butt joint, the butt joint is prevented from being loosened in the using process, and therefore the oil leakage condition is avoided. The inner ring can slide back and forth along the second chute, when hydraulic oil flows towards one direction, the paddle and the inner ring slide to one end of the first chute under the pushing of the hydraulic oil, the paddle is in contact with the first ejector rod, the first ejector rod pushes one side of the paddle, so that the paddle deflects towards one direction, the deflection direction of the paddle determines the torque direction received by the inner ring to be opposite, and the torque direction is the same as the screwing direction of the butt joint; when hydraulic oil flows toward another direction, paddle and inner circle slide to the other end of first spout under the promotion of hydraulic oil, paddle and second ejector pin contact this moment, the second ejector pin pushes away one side of paddle, make the paddle toward another direction deflection, the deflection direction of paddle is opposite with the deflection direction before this moment, when making the flow direction of hydraulic oil change like this, the moment of torsion direction that the inner circle received remains the unanimity all the time, the moment of torsion direction of inner circle can not change because of the flow direction of hydraulic oil changes and change, no matter what direction hydraulic oil flows toward like this, the moment of torsion direction of inner circle is unanimous with the direction of screwing up of butt joint all the time, play and prevent the not hard up purpose of butt joint.
Preferably, one end of the paddle is provided with a rotating shaft, the inner ring is provided with a rotating shaft hole for connecting the rotating shaft, the rotating shaft hole is arranged along the radial direction of the inner ring, and the rotating shaft is rotatably connected in the rotating shaft hole. The blades can deflect around the central axis of the rotating shaft.
Preferably, the blades are arranged in an annular array on an inner annular surface of the inner ring.
Preferably, the blades are provided with six blades.
Preferably, the first sealing ring and the second sealing ring are both made of rubber.
Preferably, the first ejector rod and the second ejector rod are both L-shaped.
The invention has the beneficial effects that: the invention can control the forklift arm to realize four actions of opening, closing, left side moving and right side moving, has simple structure, small volume and low manufacturing cost, and is beneficial to mass assembly and popularization.
Drawings
FIG. 1 is a schematic view of the structure of the present invention in one direction.
Fig. 2 is a schematic structural view in another direction of the present invention.
Fig. 3 is a schematic block diagram of the present invention.
FIG. 4 is a cross-sectional view of the tubing joint assembly.
Fig. 5 is an enlarged view of a portion a in fig. 4.
Fig. 6 is a schematic structural view of the self-tightening mechanism.
Fig. 7 is a schematic structural view of the blade.
Fig. 8 is a hydraulic line connection diagram.
In the figure: 1. the hydraulic control valve comprises a valve body, a flow dividing and combining valve body, 3, an OP oil inlet, 4, a CL oil inlet, 5, an SSR oil inlet, 6, an SSL oil inlet, 7, an A output port, 8, a B output port, 9, a C output port, 10, a D output port, 11, a connector head, 12, a butt joint, 13, an oil pipe, 14, a first oil duct, 15, a second oil duct, 16, a third oil duct, 17, a fourth oil duct, 18, a fifth oil duct, 19, a sixth oil duct, 20, a seventh oil duct, 21, an eighth oil duct, 22, a ninth oil duct, 23, a tenth oil duct, 24, a flange, 25, a first sealing ring, 26, a second sealing ring, 27, an outer ring, 28, a first lug, 29, a first sliding groove, 30, an inner ring, 31, a paddle, 32, a second lug, 33, a second sliding groove, 34, a first ejector rod, 35, a second ejector rod, 36, a rotating shaft, 37, a first working oil cylinder, 38 and a second working oil cylinder.
Detailed Description
The invention is further described in the following by means of embodiments in conjunction with the accompanying drawings.
Example 1:
as shown in fig. 1 to 8, the side shift distance adjusting accessory valve comprises a valve body 1, wherein the valve body 1 is in a rectangular parallelepiped shape. The valve body 1 is provided with a flow distributing and collecting valve 2. The flow distributing and collecting valve 2 is the prior art, and the specific structure of the flow distributing and collecting valve can be disclosed in the invention patent with the publication number of CN 107061399B. The flow distributing and collecting valve 2 is provided with an oil inlet valve port and two oil outlet valve ports. An OP oil inlet 3, a CL oil inlet 4, an SSR oil inlet 5, an SSL oil inlet 6, an A output 7, a B output 8, a C output 9 and a D output 10 are arranged on the valve body 1. The valve body is internally provided with a first oil passage 14, a second oil passage 15, a third oil passage 16, a fourth oil passage 17, a fifth oil passage 18, a sixth oil passage 19, a seventh oil passage 20, an eighth oil passage 21, a ninth oil passage 22 and a tenth oil passage 23. One end of the first oil duct 14 is connected with the OP oil inlet 3, and the other end of the first oil duct 14 is connected with an oil inlet valve port on the flow dividing and combining valve 2. One ends of the second oil duct 15 and the third oil duct 16 are respectively connected with two oil outlet valve ports on the flow dividing and combining valve 2, one ends of the fourth oil duct 17 and the ninth oil duct 22 are simultaneously connected with one end of the third oil duct 16, the other ends of the fourth oil duct 17 and the ninth oil duct 22 are respectively connected with the a outlet 7 and the SSL oil inlet 6, one ends of the fifth oil duct 18 and the tenth oil duct 23 are simultaneously connected with the third oil duct 16, and the other ends of the fifth oil duct 18 and the tenth oil duct 23 are connected with the SSR oil inlet 5 and the D outlet 10. One end of the sixth oil passage 19 is connected to the CL output port 4, one end of the seventh oil passage 20 and one end of the eighth oil passage 21 are connected to the sixth oil passage 19, and the other end of the seventh oil passage 20 and the other end of the eighth oil passage 21 are connected to the B output port 8 and the C output port 9, respectively.
In the actual operation process of the forklift, one forklift arm is driven to move by the first working oil cylinder 37, the other forklift arm is driven to move by the second working oil cylinder 38, the first working oil cylinder 37 is provided with an oil port a and an oil port B, the second working oil cylinder 38 is provided with an oil port C and an oil port D, the output port A and the output port B are respectively connected with the oil port a and the oil port B on the first working oil cylinder, and the output port C and the output port D are respectively connected with the oil port C and the oil port D on the second working oil cylinder. The working principle of the invention is as follows:
when the opening action of the forklift arms is realized, hydraulic oil enters from an OP oil inlet, a CL oil inlet serves as an oil return port, an SSR oil inlet and an SSL oil inlet are in a cut-off state, when the hydraulic oil enters from the OP oil inlet, the flow dividing and collecting valve outputs the hydraulic oil from two oil outlet valve ports according to the proportion of 1; and the returned hydraulic oil flows out from the oil port B and the oil port C to reach the output port B and the output port C, then reaches the CL oil inlet through the seventh oil duct and the eighth oil duct, and finally is discharged through the CL oil inlet to realize the return process of the hydraulic oil.
When the folding action of the forklift arms is realized, hydraulic oil enters from the CL oil inlet, the OP oil inlet is used as an oil return port, the SSR oil inlet and the SSL oil inlet are in a cut-off state, when the hydraulic oil enters from the CL oil inlet, the hydraulic oil reaches the output port B and the output port C through the seventh oil duct and the eighth oil duct respectively, the output hydraulic oil enters from the oil ports B and C of the first working oil cylinder and the second working oil cylinder respectively, piston rods of the first working oil cylinder and the second working oil cylinder retract simultaneously, and therefore the folding of the two forklift arms is realized; and the returned hydraulic oil flows out from the oil port a and the oil port D to reach an output port A and an output port D, the hydraulic oil reaching the output port A sequentially passes through a fourth oil duct, a second oil duct, a flow dividing and collecting valve and a first oil duct to reach an OP oil inlet, the hydraulic oil reaching the output port B sequentially passes through a fifth oil duct, a third oil duct, a flow dividing and collecting valve and the first oil duct to reach the OP oil inlet, and finally the hydraulic oil is discharged through the OP oil inlet to realize the return process of the hydraulic oil.
When the left side movement of the forklift arm is realized, hydraulic oil enters from the SSL oil inlet, the SSR oil inlet is used as an oil return port, the OP oil inlet and the CL oil inlet are in a cut-off state, when the hydraulic oil enters from the SSL oil inlet, the hydraulic oil reaches the A output port through the ninth oil duct and the fourth oil duct, the hydraulic oil output from the A output port enters from the a oil port of the first working oil cylinder, a piston rod of the first working oil cylinder extends out, meanwhile, the hydraulic oil in the first working oil cylinder flows out from the B oil port and reaches the B output port, due to the fact that the CL oil inlet is in the cut-off state, the hydraulic oil reaching the B output port can only reach the C output port through the seventh oil duct and the eighth oil duct and then enters from the C oil port of the second working oil cylinder, the piston rod of the second working oil cylinder retracts, therefore the two forklift arms are moved leftwards synchronously, the hydraulic oil in the second working oil cylinder flows out from the D oil port to the D output port and then reaches the SSR oil inlet through the fifth oil duct and the tenth oil duct, and finally the hydraulic oil flows out from the SSR oil inlet, and the hydraulic oil flows out of the SSR oil inlet, and the hydraulic oil return flow is realized.
When the right side of the forklift arm moves, hydraulic oil enters from the SSR oil inlet, the SSL oil inlet serves as an oil return port, the OP oil inlet and the CL oil inlet are in a cut-off state, when the hydraulic oil enters from the SSR oil inlet, the hydraulic oil reaches the D output port through the tenth oil duct and the fifth oil duct, the hydraulic oil output from the D output port enters from the D oil port of the second working oil cylinder, a piston rod of the second working oil cylinder extends out, meanwhile, the hydraulic oil in the second working oil cylinder flows out from the C oil port and reaches the C output port, because the CL oil inlet is in the cut-off state, the hydraulic oil reaching the C output port can only reach the B output port through the eighth oil duct and the seventh oil duct and then enters from the B oil port of the first working oil cylinder, the piston rod of the first working cylinder retracts, the two forklift arms synchronously move to the right side, the hydraulic oil in the first working cylinder flows out from the a oil port and reaches the A output port and then reaches the SSL oil inlet through the fourth oil duct and the ninth oil duct, and finally, the hydraulic oil flows out from the SSL oil inlet to realize the return of the hydraulic oil return.
And oil pipe joint assemblies are arranged on the A output port 7, the B output port 8, the C output port 9 and the D output port 10. The oil pipe joint assembly comprises a connector 11, a butt joint 12 and an oil pipe 13, wherein the connector 11 is respectively fixed on an A output port 7, a B output port 8, a C output port 9 and a D output port 10, and an external thread is arranged on the connector 11. The butt joint 12 is provided with a first through hole and a second through hole, a step surface is formed between the first through hole and the second through hole, and the inner wall of the second through hole is provided with an internal thread matched with the external thread on the connector head. One end of the oil pipe 13 is provided with a flange 24, the oil pipe 13 passes through the first through hole, the flange 24 abuts against the step surface, and one end of the flange 24 is provided with a first sealing ring 25. A second sealing ring 26 is arranged at one end of the connector head. The first seal ring 25 and the second seal ring 26 are made of rubber. The connector head 11 is screwed into the second through hole. The oil pipe joint assembly is used for connecting an oil pipe. When connecting, only need be connected to the butt joint and screw up on the connector, sealing connection between oil pipe and the connector can be guaranteed to first sealing washer and second sealing washer, avoids the oil leak.
A self-tightening assembly is arranged in the second through hole and comprises an outer ring 27 arranged in the second through hole and an inner ring 30 arranged in the outer ring 27, and the outer ring 27 is positioned between the first sealing ring 25 and the second sealing ring 26. The inner wall of the second through hole is provided with a first sliding slot 29, the first sliding slot 29 is arranged along the axial direction of the second through hole, the outer ring surface of the outer ring 27 is provided with a first lug 28, and the first lug 28 is connected in the first sliding slot 29 in a sliding manner. The outer ring 27 has a second sliding groove 33 formed on an inner circumferential surface thereof, the second sliding groove 33 is formed along an axial direction of the outer ring 27, and the inner ring 30 has a second protrusion 32 formed on an outer circumferential surface thereof, the second protrusion 32 being slidably coupled to the second sliding groove 33. The inner ring surface of the inner ring 30 is connected with a plurality of paddles 31 arranged along the radial direction of the inner ring 30, and the paddles 31 are arranged on the inner ring surface of the inner ring 30 in an annular array mode. The paddles 31 are provided with six in total. One end of the paddle 31 is provided with a rotating shaft 36, a rotating shaft hole for the rotating shaft is formed in the inner ring 30, the rotating shaft 36 hole is formed in the radial direction of the inner ring 30, and the rotating shaft 36 is rotatably connected in the rotating shaft hole. And a first ejector rod 34 and a second ejector rod 35 corresponding to the paddle are arranged on the inner annular surface of the outer ring, and the first ejector rod 34 and the second ejector rod 35 are respectively positioned at two sides of the paddle 31. The first push rod 34 and the second push rod 35 are both L-shaped. The blade 31 is capable of deflecting about the central axis of the shaft 36. When hydraulic oil flows through the self-tightening mechanism, the paddle generates a torque to the inner ring under the action of the hydraulic oil, the direction of the torque is the same as the screwing direction of the butt joint, the butt joint is prevented from being loosened in the using process, and therefore the oil leakage condition is avoided. The inner ring can slide back and forth along the second sliding groove, when hydraulic oil flows towards one direction, the paddle and the inner ring slide to one end of the first sliding groove under the pushing of the hydraulic oil, the paddle is in contact with the first ejector rod at the moment, the first ejector rod pushes one side of the paddle, so that the paddle deflects towards one direction, the deflection direction of the paddle determines the reverse direction of torque borne by the inner ring, and the torque direction is the same as the screwing direction of the butt joint; when hydraulic oil flows toward another direction, paddle and inner circle slide to the other end of first spout under the promotion of hydraulic oil, paddle and second ejector pin contact this moment, the second ejector pin pushes away one side of paddle, make the paddle toward another direction deflection, the deflection direction of paddle is opposite with the deflection direction before this moment, when making the flow direction of hydraulic oil change like this, the moment of torsion direction that the inner circle received remains the unanimity all the time, the moment of torsion direction of inner circle can not change because of the flow direction of hydraulic oil changes and change, no matter what direction hydraulic oil flows toward like this, the moment of torsion direction of inner circle is unanimous with the direction of screwing up of butt joint all the time, play and prevent the not hard up purpose of butt joint.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (7)
1. A lateral shifting distance-adjusting accessory valve is characterized in that: the flow distribution and collection valve is provided with an oil inlet valve port and two oil outlet valve ports, the valve body is provided with an OP oil inlet, a CL oil inlet, an SSR oil inlet, an SSL oil inlet, an A output port, a B output port, a C output port and a D output port, the valve body is internally provided with a first oil duct, a second oil duct, a third oil duct, a fourth oil duct, a fifth oil duct, a sixth oil duct, a seventh oil duct, an eighth oil duct, a ninth oil duct and a tenth oil duct, one end of the first oil duct is connected with the OP oil inlet, and the other end of the first oil duct is connected with the oil inlet valve port on the flow distribution and collection valve; one ends of a second oil duct and a third oil duct are respectively connected with two oil outlet valve ports on the flow dividing and collecting valve, one end of a fourth oil duct and one end of a ninth oil duct are simultaneously connected with one end of the second oil duct, the other end of the fourth oil duct and the other end of the ninth oil duct are respectively connected with an A output port and an SSL oil inlet, one end of a fifth oil duct and one end of a tenth oil duct are simultaneously connected with the third oil duct, and the other ends of the fifth oil duct and the other end D output port of the tenth oil duct are connected with an SSR oil inlet; one end of the sixth oil duct is connected with the CL output port, one end of the seventh oil duct and one end of the eighth oil duct are simultaneously connected with the sixth oil duct, and the other end of the seventh oil duct and the other end of the eighth oil duct are respectively connected with the B output port and the C output port; the oil pipe joint assembly is arranged on the output port A, the output port B, the output port C and the output port D and comprises a connector head, a butt joint and an oil pipe, the connector head is respectively fixed on the output port A, the output port B, the output port C and the output port D, external threads are arranged on the connector head, and a first through hole and a second through hole are formed in the butt joint; a self-tightening assembly is arranged in the second through hole, the self-tightening assembly comprises an outer ring arranged in the second through hole and an inner ring arranged in the outer ring, a first sliding groove is formed in the inner wall of the second through hole, the first sliding groove is axially arranged along the second through hole, a first convex block is arranged on the outer ring surface of the outer ring, and the first convex block is connected in the first sliding groove in a sliding manner; a second sliding groove is formed in the inner ring surface of the outer ring and is arranged along the axial direction of the outer ring, and a second convex block is arranged on the outer ring surface of the inner ring and is connected in the second sliding groove in a sliding mode; the inner ring surface of the inner ring is connected with a plurality of blades arranged along the radial direction of the inner ring, and one end of each blade is rotatably connected to the inner ring; a first ejector rod and a second ejector rod corresponding to the blades are arranged on the inner ring surface of the outer ring, and the first ejector rod and the second ejector rod are respectively positioned on two sides of the blades; the paddle is provided with six.
2. The side-shifting distance-adjusting accessory valve according to claim 1, wherein the valve body is rectangular parallelepiped.
3. The side-shifting distance-adjusting accessory valve according to claim 1, wherein a step surface is formed between the first through hole and the second through hole, an inner wall of the second through hole is provided with an inner thread matched with an outer thread on the connector head, one end of the oil pipe is provided with a flange, the oil pipe passes through the first through hole, the flange abuts against the step surface, and one end of the flange is provided with a first sealing ring; one end of the connecting pipe head is provided with a second sealing ring, and the connecting pipe head is in threaded connection with the second through hole.
4. The side shift distance adjusting attachment valve according to claim 1, wherein one end of the blade is provided with a rotating shaft, the inner ring is provided with a rotating shaft hole for connecting the rotating shaft, the rotating shaft hole is arranged along a radial direction of the inner ring, and the rotating shaft is rotatably connected in the rotating shaft hole.
5. A side-shifting range adjustment accessory valve according to claim 1, wherein the paddles are arranged in an annular array on the inner annular surface of the inner ring.
6. A side-shifting range-adjusting accessory valve according to claim 3, wherein the first and second sealing rings are made of rubber.
7. The side-shifting pitch-adjusting accessory valve of claim 1, wherein the first push rod and the second push rod are both L-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011026598.3A CN112268029B (en) | 2020-09-25 | 2020-09-25 | Sidesway distance-adjusting attachment valve |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011026598.3A CN112268029B (en) | 2020-09-25 | 2020-09-25 | Sidesway distance-adjusting attachment valve |
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| CN112268029A CN112268029A (en) | 2021-01-26 |
| CN112268029B true CN112268029B (en) | 2023-01-06 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201485234U (en) * | 2009-08-04 | 2010-05-26 | 厦门厦工机械股份有限公司 | Synchronous device achieving fork of forklift |
| CN102795578A (en) * | 2011-05-23 | 2012-11-28 | 杭州友高精密机械有限公司 | Fork laterally-moving distance-adjusting device of fork truck |
| CN103511373B (en) * | 2012-06-26 | 2016-08-03 | 安庆联动属具股份有限公司 | Synchronous control hydraulic system |
| CN207998435U (en) * | 2018-01-13 | 2018-10-23 | 裕泰液压技术(上海)有限公司 | A kind of hydraulic control valve group of fork truck clamping plate |
| CN209838826U (en) * | 2019-04-16 | 2019-12-24 | 东莞市格来斯金属制品有限公司 | Hydraulic cylinder of aluminum shell die-casting equipment |
| CN111498757A (en) * | 2020-04-10 | 2020-08-07 | 安徽合力股份有限公司 | Synchronous control forklift attachment hydraulic system |
| CN213679679U (en) * | 2020-09-25 | 2021-07-13 | 杭叉集团股份有限公司 | Side-moving distance-adjusting accessory valve |
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Effective date of registration: 20221130 Address after: No. 666, Xiangfu Road, Lin'an District, Hangzhou, Zhejiang 311300 Applicant after: HANGCHA GROUP Co.,Ltd. Applicant after: Hangzhou Hangcha mechanical equipment manufacturing Co.,Ltd. Address before: No. 666, Xiangfu Road, Lin'an District, Hangzhou, Zhejiang 311300 Applicant before: HANGCHA GROUP Co.,Ltd. Applicant before: Hangzhou Hangcha Kangli Forklift Co.,Ltd. |
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