Multi-way valve rotating bucket joint positioning device

Abstract

The invention discloses a multi-way valve rotating bucket linkage positioning device which comprises a multi-way valve, the multi-way valve comprises a valve body, a positioning device is assembled at the tail end of the valve body, a reset device is assembled in the positioning device, a restorer is assembled at the tail end of the reset device, and the restorer is assembled at the maximum stroke position of the tail end of multi-way valve control equipment. The valve rod is driven by the manual operation rod to move, the steel ball at the tail end of the valve rod bounces and is positioned in the positioning sleeve, a needed gear can be automatically kept, an operator does not need to keep the gear all the time, the working efficiency and safety are improved, and the problem that when an existing operator operates a tipping bucket or retracts the bucket, the operation is inconvenient is effectively solved. The problem that the labor intensity of operators is increased due to the fact that the handle needs to be operated by hands to be always kept on the gear position is solved, the device has the function of controlling one piece to reset when the tail end reaches the limit stroke, the safety of the device is improved, energy loss and device loss are reduced, and the device is simple and stable in structure and easy to maintain.

Description

Technical Field

[0001] The invention relates to the field of multi-way valves, in particular to a multi-way valve rotating bucket joint positioning device. Background Art

[0002] The multi-way valve is a key component in the hydraulic system of engineering machinery. It is a highly integrated multifunctional valve that integrates a reversing valve, a one-way valve, a relief valve, and an oil replenishing valve. The multi-way valve is mainly divided into a manual multi-way valve and a hydraulically controlled multi-way valve. Among them, the manual multi-way valve directly controls the reversal of the valve stem through a mechanical connection by the operating handle. This type of control has good micro-motion characteristics, is simple to operate and change, and has been widely used. However, since it is controlled by a joystick, the operator sometimes cannot control the displacement of the valve stem accurately enough. Moreover, the bucket linkage of the multi-way valve is controlled by a spring reset assembly, which means that the operator must keep the manual operating handle in the gear position when operating the bucket tipping or bucket collection, thereby increasing the labor intensity of the operator. Summary of the invention

[0003] The object of the present invention is to provide a multi-way valve rotating bucket joint positioning device to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multi-way valve rotating bucket joint positioning device, comprising a multi-way valve, the multi-way valve comprising a valve body, the valve body is internally equipped with a valve stem for controlling the direction of hydraulic oil, the end of the valve stem is equipped with a positioning device capable of temporarily positioning the valve stem, the positioning device is internally equipped with a reset device, the reset device can make the positioning mechanism of the positioning device invalid and reset the entire valve stem, the end of the reset device is equipped with a resetter, the resetter is assembled at the maximum stroke position at the end of the multi-way valve control device; the positioning device comprises a fixed cover, the fixed cover is internally fixedly equipped with a positioning core, the interior of the positioning core is sleeved on the end of the valve stem; the end of the valve stem is provided with a sliding hole, A positioning spring is arranged at the center of the sliding hole, and steel balls are sleeved on both sides of the positioning spring inside the sliding hole, and a circular groove with the same diameter as the steel ball is provided inside the positioning core, and the steel ball is tightly fitted with the inner wall of the groove or the inner wall of the positioning core; a guide groove is provided on the outer side of the fixed cover; the reset device comprises an annular spring piece with elastic force, and the end of the annular spring piece is hinged and positioned inside the positioning core, and the annular spring piece is extended from the inside of the guide groove in an annular shape by bypassing the positioning point at the end of the annular spring piece, and a flexible wire core is assembled on the outer side of the extended section of the annular spring piece, and the displacement of the wire core can drive the annular spring piece to stretch and contract around the outer sides of all steel balls and the positioning point at the end of the annular spring piece to change the inner diameter of the annular spring piece.

[0005] Preferably, an oil passage connected to a control pipeline is provided on the outside of the valve body, and the valve stem is slidably assembled inside the valve body. The axial displacement of the valve stem can drive a valve block outside the valve stem to change the on / off state and flow ratio of the hydraulic oil between the oil passages.

[0006] Preferably, a through mounting hole is provided on the top of the valve body, and a valve core for reversing, throttling, pressure regulation, non-return and diversion is mounted on the outside of the valve body.

[0007] Preferably, a set of the positioning core includes a positioning kit 1, a positioning kit 3 and several positioning kits 2, the positioning kit 1, positioning kit 2 and positioning kit 3 are connected in sequence, and spacers are tightly fitted at the installation gaps, and connecting rods are installed through the centers of the positioning kits 1, 2, 3 and spacers, and nuts are threaded at both ends of the connecting rods, and the nuts are tightly fitted and fixed to the outer walls of the positioning kits 1 and 3.

[0008] Preferably, the clamping groove is annularly disposed at the inner edges of the first and third positioning sleeves and at the inner edges on both sides of the second positioning sleeve.

[0009] Preferably, spring clip positioning holes are provided through the outer sides of the slots of the positioning kits one, two and three and the inner sides of the connecting rod installation positions, and spring clip positioning pins are fixedly installed inside the spring clip positioning holes.

[0010] Preferably, the outer part of the wire core is sleeved with an outer sleeve, both ends of the outer sleeve are positioned and installed with annular sheets, the bottom outer wall of the guide groove is equipped with a fixing frame, and the outer sleeve is fixedly installed with the fixing frame.

[0011] Preferably, the annular spring piece includes a socket piece fixed between the wire core, the end of the socket piece is integrally cut with claw pieces with the same number as the gaps between positioning kit one, several sets of positioning kit two and positioning kit three, the claw piece is bent at one end away from the socket piece to form a spring piece head, a circular hole is provided at the center of the spring piece head, and the circular hole is socketed with the outside of the spring piece positioning pin for positioning.

[0012] Preferably, the resetter includes a fixing part, a slot is provided on one side of the fixing part, the slot is fixedly installed on the end of the outer sleeve, a flip part is rotatably installed inside the fixing part, a connecting head is fixed on the end of the wire core, the connecting head is hinged to one end of the flip part, a pressing part is slidably connected to the other end of the flip part, the pressing part slides linearly on the outside of the fixing part, and a reset spring is assembled between the pressing part and the fixing part.

[0013] Preferably, a sliding groove is provided on the outer wall of the fixing member, the pressing member is slidably assembled inside the sliding groove, notches are provided on both sides of the flip member, a connecting pin is slidably assembled at the installation position of the flip member and the connecting head, and a sliding shaft is slidably assembled at the other end of the pressing member and the flip member.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention provides a spring reset device in place of the existing mechanical multi-way valve with a spring positioning device for the multi-way valve, and the displacement of the valve stem is driven by a manual operating rod, and the steel ball at the end of the valve stem is positioned by springing inside the positioning sleeve, and can be automatically maintained at the required gear position, and the operator does not need to maintain the gear position all the time, thereby improving work efficiency and safety, and before the operating end reaches the maximum stroke position, the two adjacent components of the operating end are squeezed to displace the fixing part and the pressing part inwardly, and the turning part is turned to drive the wire core to slide inside the outer sleeve, and the sleeve connecting piece is pulled outward, and since the end of the claw piece is positioned Therefore, the change in the circumference of the claw piece will reduce the inner diameter of the claw piece, thereby reducing the diameter and moving the steel ball stuck in the slot inward, losing the limit depth of the clamping, so that the steel ball is fully supported and cannot be clamped and positioned, and the reset spring pushes the valve stem to reset, thereby achieving the effect of passive one-piece reset and closing the valve, effectively solving the problem that the existing operators must keep the manual operating handle in the gear position when operating the bucket tipping or bucket collection action, which increases the labor intensity of the operators, and has a one-piece reset function when the control end reaches the limit stroke, which improves the safety of the equipment, reduces energy loss and equipment loss, and has a simple, stable and easy to maintain structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 A top view of the present invention; Figure 3 for Figure 2 Schematic diagram of the release state of the cross section at AA in the middle; Figure 4 for Figure 2 Schematic diagram of the tightened state of the section at AA in the middle; Figure 5 It is an explosion schematic diagram of the present invention; Figure 6 It is a schematic diagram of the structure of the fixed cover of the present invention; Figure 7 It is a schematic diagram of the assembly of the positioning set of the present invention; Figure 8 This is a schematic diagram of the assembly of the positioning device of the present invention in a released state; Fig. 9 This is a schematic diagram of the assembly of the positioning device of the present invention in a tightened state; Fig.10It is a schematic diagram of the structure of the reset device of the present invention; Fig.11 It is a schematic diagram of the structure of the resetter of the present invention; Fig.12 It is a schematic diagram of the release state of the resetter of the present invention in the cross-section state; Fig.13 It is a schematic diagram of the tightened state of the reducer of the present invention in cross-section; Fig.14 for Figure 3 A schematic diagram of the structure enlarged in the middle a; Fig.15 for Figure 4 Enlarged schematic diagram of the structure at point b in the middle.

[0016] In the figure: 1. multi-way valve, 11. valve body, 12. oil port, 13. mounting hole, 14. valve stem, 15. valve core, 16. sliding hole, 17. steel ball, 18. positioning spring, 2. positioning device, 21. fixing cover, 22. positioning kit 1, 23. positioning kit 2, 24. positioning kit 3, 25. spacer, 26. connecting rod, 27. nut, 28. slot, 29. spring positioning hole, 210. Spring piece positioning pin, 211, guide groove, 3, reset device, 31, fixing frame, 32, outer sleeve, 33, wire core, 34, annular spring piece, 341, sleeve piece, 342, claw piece, 343, spring piece head, 35, connector, 4, reset device, 41, fixing piece, 42, slot, 43, slide groove, 44, flip piece, 45, sliding shaft, 46, pressing piece, 47, reset spring, 48, connecting pin. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-15The present invention provides a technical solution: a multi-way valve rotating bucket joint positioning device, comprising a multi-way valve 1, the multi-way valve 1 comprising a valve body 11, the valve body 11 is internally equipped with a valve stem 14 for controlling the direction of hydraulic oil, the end of the valve stem 14 is equipped with a positioning device 2 capable of temporarily positioning the valve stem 14, the positioning device 2 is internally equipped with a reset device 3, the reset device 3 can make the positioning mechanism of the positioning device 2 invalid and reset the entire valve stem 14, the end of the reset device 3 is equipped with a resetter 4, the resetter 4 is assembled at the maximum stroke position of the end of the multi-way valve 1 control device; the positioning device 2 comprises a fixed cover 21, the interior of the fixed cover 21 is fixedly equipped with a positioning core, the interior of the positioning core is sleeved on the end of the valve stem 14; the end of the valve stem 14 is provided with a sliding hole 16, the center of the sliding hole 16 is provided with a There is a positioning spring 18, and steel balls 17 are sleeved on both sides of the positioning spring in the sliding hole 16. A circular groove 28 with the same diameter as the steel ball 17 is provided inside the positioning core, and the steel ball 17 is tightly fitted with the inner wall of the groove 28 or the inner wall of the positioning core; a guide groove 211 is provided on the outer side of the fixed cover 21; the reset device 3 includes an annular spring piece 34 with elastic force, and the end of the annular spring piece 34 is hinged and positioned inside the positioning core. The annular spring piece 34 is annular and bypasses the positioning point at the end of the annular spring piece 34 and extends from the inside of the guide groove 211. A flexible wire core 33 is installed on the outer side of the extended section of the annular spring piece 34. The displacement of the wire core 33 can drive the annular spring piece 34 to stretch and contract around the outer sides of all steel balls and the positioning point at the end of the annular spring piece 34 to change the inner diameter of the annular spring piece 34.

[0019] The present invention provides a multi-way valve with a spring positioning device to replace the spring reset device in the existing mechanical multi-way valve. The valve stem 14 is driven to move by a manual operating rod, and the steel ball at the end of the valve stem is positioned by bouncing inside the positioning sleeve, and can be automatically maintained at a required gear position. The operator does not need to maintain the gear position all the time, thereby improving work efficiency and safety. Before the operating end reaches the maximum stroke position, the two adjacent components of the operating end are squeezed to displace the fixing member 41 and the pressing member 46 inward, and the turning member 44 is turned over to drive the wire core 33 to slide inside the outer sleeve 32, and the sleeve connecting piece 341 is pulled outward. Since the end of the claw piece 342 is positioned, the claw piece 34 The change in the circumference of 2 will reduce the inner diameter of the claw piece 342, thereby reducing the diameter and moving the steel ball 17 stuck in the slot 28 inward, losing the limit depth of the clamping, so that the full support of the steel ball 17 cannot be clamped and positioned, and the reset spring pushes the valve stem 14 to reset, thereby achieving the effect of passive one-piece reset and closing the valve, effectively solving the problem that the existing operator must keep the manual operating handle in the gear position when operating the bucket tipping or bucket collection action, which increases the labor intensity of the operator, and has a one-piece reset function when the control end reaches the limit stroke, thereby improving the safety of the equipment, reducing energy loss and equipment loss, and having a simple, stable and easy to maintain structure.

[0020] Specifically, an oil circuit port 12 connected to the control pipeline is opened on the outside of the valve body 11, and a valve stem 14 is slidably assembled inside the valve body 11. The axial displacement of the valve stem 14 can drive the valve block outside the valve stem 14 to change the hydraulic oil on and off and flow ratio between the oil circuit port 12. A large reset spring is arranged between the valve stem 14 and the fixed cover 21. In order to make the picture too complicated, the large reset spring is omitted. The large reset spring is arranged between the inner plane inner wall of the fixed cover 21 and the end section of the valve stem 14.

[0021] Specifically, a through mounting hole 13 is provided at the top of the valve body 11, and a valve core 15 for reversing, throttling, pressure regulation, check and diversion is installed on the outside of the valve body 11. The valve core 15 used in the present invention can be divided into reversing, throttling, pressure regulation, check and diversion types according to their functions. It is used to control the direction, flow, pressure and on-off state of the fluid to realize various functional requirements of the hydraulic or pneumatic system. When different multi-way valves are used, the appropriate valve core can be selected according to the needs.

[0022] Specifically, a set of positioning cores includes a positioning kit 1 22, a positioning kit 3 24 and several positioning kits 23. The positioning kit 1 22, the positioning kit 23 and the positioning kit 3 24 are connected in sequence, and a spacer 25 is tightly fitted at the installation gap. A connecting rod 26 is installed through the center of the positioning kit 1 22, the positioning kit 23, the positioning kit 3 24 and the spacer 25. Nuts 27 are screwed at both ends of the connecting rod 26, and the nuts 27 are tightly fitted and fixed to the outer walls of the positioning kit 1 22 and the positioning kit 3 24. When in use, by connecting the screw rod 26, the three kits can be increased or reduced according to the number of slots required by the connection of the hole positions, and multiple gears can be freely assembled. In the case of a universal valve body, it is only necessary to replace the entire set of the outward positioning device 2 to achieve the replacement of multiple gears, which is convenient and quick to use.

[0023] Specifically, the clamping groove 28 is annularly disposed at the inner edges of the first positioning sleeve 22 and the third positioning sleeve 24 and at the inner edges of both sides of the second positioning sleeve 23 .

[0024] The arc of the slot 28 is related to the spacing controlled by the spacer 25. The fixed distance separated by the spacer 25 of a single size can adapt to the use of steel balls 17 of a certain diameter. When the steel balls are of the same size, the size of the spacer 25 can remain unchanged. A circular slot 28 is opened according to the spacing of the steel balls and the middle part is cut off to form a positioning kit 1 22, a positioning kit 2 23 and a positioning kit 3 24. When in use, when the annular spring piece 34 is in a relaxed state, the steel ball can be stuck into the slot 28 to a certain depth when passing through the slot 28 and the spacing gap position to achieve a positioning effect. The depth is the position of the center line of the circular groove of the slot 28. This position is related to the spring thrust of the valve stem 14 for resetting. Half of it is conventionally set to a depth of one-third of the radius of the steel ball.

[0025] The number of connecting screws 26 used is preferably an odd group, preferably 5 groups. Since the structure is thinner in order to meet the installation position, 5 groups can leave a larger gap while meeting the support force and tightness, which is convenient for setting the annular spring piece 34. The reason for setting it as an odd group is that the axis connection line of the two steel balls 17 just passes through the axis of the valve stem 14. Therefore, the axis connection line or surface of the two connecting screws 26 with the largest distance does not pass through the positioning core concentric with the valve stem 14, avoiding the steel ball encountering a singular point and being unable to position. At least it can ensure that under extreme conditions, if one steel ball hits the spacer sleeve 25, the other steel ball 17 will not be unable to position.

[0026] Specifically, spring clip positioning holes 29 are formed on the outer sides of the slots 28 of the positioning kit 1 22 , the positioning kit 2 23 and the positioning kit 3 24 and on the inner sides of the installation positions of the connecting rods 26 , and spring clip positioning pins 210 are fixedly installed inside the spring clip positioning holes 29 .

[0027] The following processes are required for the installation of the positioning device and the reset device 3 combined as one: The first one is the basic installation solution First, select the appropriate number of positioning kits 1 22, 23 and 3 24 with rounded edges, smooth and burr-free, and place them horizontally on the desktop, with the card slot 28 of the positioning kit 1 22 facing upwards, and then set the spacer 25, aligning the hole position of the spacer 25 with the hole position of the positioning kit 1 22, and then set the positioning kit 2 23 and the spacer 25 according to the rules. After setting several groups, finally align the surface of the positioning kit 3 24 with the card slot 28 downwards with the uppermost spacer 25, and align the hole positions; After the placement is completed, the connecting screw 26 is passed through the installation hole and the center hole of the spacer 25, and a nut is screwed into the top first, and then the positioning kit three 24 is pressed and the side wall of the positioning kit one 22 is pinched to reverse the whole, and finally the nut is screwed to achieve a complete clamping effect to form a complete positioning core; Then place the positioning core into the fixing cover 21, screw the top screw into the screw hole on the outer wall of the fixing rod 21, the top screw abuts against one of the positioning kits 23 with a groove on the outside for positioning, then insert the annular spring piece 34 as a whole from the center of the guide groove 211, and extend the claw piece 342 from the inner side of the spacer 25 from the nearest position to the inside of the positioning core, temporarily insert a spring piece positioning pin 210 into the hole at the end of multiple claw pieces 342, guide the claw piece 342 with the spring piece positioning pin 210 installed inward, and simultaneously move the annular spring piece 34 inward, form the claw piece 342 into a ring shape and move it to the vicinity of the spring piece positioning hole 29, finally pull out the temporary spring piece positioning pin 210, and insert the spring piece positioning pin 210 from the inside of the spring piece positioning hole 29 to complete the installation process.

[0028] The above methods can be installed by designing a separate simple mold or using the mold with automated equipment. In addition to the above methods, there are two other options: The second installation scheme is to set the inner opening of the guide groove 211 of the fixed cover 21 through the installation surface between the fixed cover 21 and the valve body 11, and then assemble the positioning core, first pass the claw piece 342 of the annular spring piece 34 through the spring piece positioning pin 210 and the spring piece positioning hole 29, then go around a circle and insert it from the opening of the fixed cover 21 and the inner part of the through groove of the guide groove 211; Another third method is to open grooves at the coaxial positions of all the positioning kits 1 22, 23 and 3 24. After the positioning core is assembled and fixed, the annular spring piece 210 is guided into the interior of the spacer 25. Before the temporary spring piece positioning pin 210 is pulled out, a square rod is inserted into the interior of the groove. After the temporary spring piece positioning pin 210 is pulled out, the claw piece 342 rebounds and is intercepted by the square rod, and then the spring piece positioning pin 210 is directly inserted to achieve installation. The first or third installation scheme can also be used, using a key-shaped L-shaped tool. After pulling out the temporary spring clip locating pin 210, when inserting the spring clip locating pin 210, each time the spring clip locating pin 210 is inserted into a gap, the short rod of the L-shaped tool is used to push the claw piece 342 inward to align the hole with the spring clip locating pin 210.

[0029] The outer sleeve 32 is sleeved on the outside of the wire core 33, and annular plates are positioned and installed at both ends of the outer sleeve 32. The bottom outer wall of the guide groove 211 is equipped with a fixing frame 31, and the outer sleeve 32 is fixedly installed with the fixing frame 31. The matching structure of the wire core 33 and the outer sleeve 32 is the most commonly used brake cable in the prior art. The outer outer sleeve 32 is responsible for fixing, protecting and guiding, and the auxiliary wire core 33 slides inside it, thereby realizing a flexible connection between two relatively moving parts. It is commonly used in mechanical remote flexible connection structures such as bicycles, motorcycles, and automobile brake systems, automobile engine compartment opening, etc. It has a simple structure, is easy to obtain, and is simple to lay out, and is very suitable for the present invention.

[0030] The annular spring piece 34 includes a socket piece 341 fixed between the wire core 33, and the end of the socket piece 341 is integrally cut with claw pieces 342 with the same number as the gaps between the positioning kit 1 22, several sets of positioning kits 23 and positioning kit 3 24. The claw piece 342 is bent at one end away from the socket piece 341 to form a spring piece head 343. There is a circular hole at the center of the spring piece head 343, and the circular hole is socketed with the outside of the spring piece positioning pin 210 for positioning.

[0031] The resetter 4 includes a fixing member 41, one side of which is provided with a slot 42, the slot 42 is fixedly installed with the end of the outer sleeve 32, a flip member 44 is rotatably installed inside the fixing member 41, a connector 35 is fixed to the end of the wire core 33, the connector 35 is hinged to one end of the flip member 44, the other end of the flip member 44 is slidably connected with a pressing member 46, the pressing member 46 slides linearly outside the fixing member 41, and a reset spring 47 is assembled between the pressing member 46 and the fixing member 41.

[0032] A sliding groove 43 is provided on the outer wall of the fixing member 41, and a pressing member 46 is slidably assembled inside the sliding groove 43. Notches are provided on both sides of the flip member 44. A connecting pin 48 is slidably assembled between the installation position of the flip member 44 and the connecting head 35, and a sliding shaft 45 is slidably assembled between the pressing member 46 and the other end of the flip member 44.

[0033] When the whole resetter 4 is working, it is arranged between two adjacent parts of the control end, such as the hinge point of the forklift bucket, etc. When the bucket reaches the maximum position, the pressing member 46 is pressed down to trigger the compression reset spring 47, and the flip member 44 flips around the intersection point at the center (such as Fig.12 and Fig.13As shown in the figure, the hinge point on the right side is pressed down and the left side rises. Due to the fixation of the outer sleeve 32, the flexible wire core 33 is stretched from the inside of the outer sleeve 32, and the wire core 33 is displaced outward as a whole, thereby pulling one side of the sleeve 341. Since the end of the claw piece 342 is positioned, the length of the claw piece 342 inside the positioning core changes. After being converted into a geometric principle, the circumference changes, and the approximate center of the circle remains unchanged. The claw piece 342 shrinks inward, thereby filling the groove that can accommodate the steel ball 17 (as shown in the figure). Figure 3 and Figure 4 The claw piece 342 on the right side changes inside and outside), so the steel ball 17 loses the depth of the clamping, and the valve stem 14 will be pushed by the large reset spring to achieve the reset effect.

[0034] It should be noted that the annular spring piece 34 is made of a flexible, tough and elastic steel sheet as a whole, and may also be made of other materials, such as plastic with greater toughness or other materials that can achieve the effects of the present application.

[0035] The wire core 33 is also a flexible steel wire or other cylindrical or braided material with toughness that is not easily deformed by pushing or pulling, and can be displaced inside the outer sleeve 32 by pushing and pulling.

[0036] In actual use, a tension spring may be provided between the sleeve piece 341 and the fixing frame 31 to assist the wire core 33 in resetting, which is suitable for locations where the outer sleeve 32 and the wire core 33 are installed too far apart.

[0037] In addition to being used in conjunction with the resetter 4, one end of the connector of the reset device 3 of the present application can also be provided with a slider at the bottom end of the manual operating lever. When operated in the cab, the operator lifts the slider upwards and pulls the wire core 33 out of the fixed outer sleeve 32, which can also achieve a one-piece reset effect.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-way valve rotating bucket joint positioning device, comprising a multi-way valve (1), characterized in that: The multi-way valve (1) comprises a valve body (11), the interior of the valve body (11) is equipped with a valve stem (14) for controlling the direction of hydraulic oil, the end of the valve stem (14) is equipped with a positioning device (2) capable of temporarily positioning the valve stem (14), the interior of the positioning device (2) is equipped with a reset device (3), the reset device (3) can make the positioning mechanism of the positioning device (2) ineffective and reset the entire valve stem (14), the end of the reset device (3) is equipped with a resetter (4), the resetter (4) is assembled at the maximum stroke position of the end of the control device of the multi-way valve (1); the positioning device (2) comprises a fixed cover (21), the interior of the fixed cover (21) is fixedly equipped with a positioning core, the interior of the positioning core is sleeved on the end of the valve stem (14); the end of the valve stem (14) is provided with a sliding hole (16), the center of the sliding hole (16) is provided with a positioning spring (18), The two sides of the positioning spring are located inside the sliding hole (16) and are sleeved with steel balls (17); the interior of the positioning core is provided with an annular groove (28) having the same diameter as the steel ball (17); the steel ball (17) is tightly fitted with the inner wall of the groove (28) or the inner wall of the positioning core; the outer side of the fixed cover (21) is provided with a guide groove (211); the reset device (3) comprises an annular spring sheet (34) with elastic force; the end of the annular spring sheet (34) is hingedly positioned inside the positioning core; the annular spring sheet (34) is annularly bypassing the positioning point at the end of the annular spring sheet (34) and extending from the inside of the guide groove (211); the outer side of the extension section of the annular spring sheet (34) is equipped with a flexible wire core (33); the displacement of the wire core (33) can drive the annular spring sheet (34) to stretch and contract around the outer sides of all the steel balls and the positioning point at the end of the annular spring sheet (34) to change the inner diameter of the annular spring sheet (34).

2. A multi-way valve rotating bucket joint positioning device according to claim 1, characterized in that: The valve body (11) is provided with an oil passage opening (12) connected to a control pipeline on the outside, and the valve stem (14) is slidably mounted inside the valve body (11). The axial displacement of the valve stem (14) can drive a valve block outside the valve stem (14) to change the on / off state and flow ratio of the hydraulic oil between the oil passage openings (12).

3. A multi-way valve rotating bucket joint positioning device according to claim 1, characterized in that: A through-going mounting hole (13) is provided on the top of the valve body (11), and a valve core (15) for direction reversing, throttling, pressure regulation, non-return and flow diversion is mounted on the outside of the valve body (11).

4. A multi-way valve rotating bucket joint positioning device according to claim 1, characterized in that: A set of the positioning core comprises a positioning kit 1 (22), a positioning kit 3 (24) and a plurality of positioning kits 2 (23); the positioning kit 1 (22), the positioning kit 2 (23) and the positioning kit 3 (24) are connected in sequence and are tightly fitted with a spacer (25) at the installation gap; a connecting rod (26) is installed through the center of the positioning kit 1 (22), the positioning kit 2 (23), the positioning kit 3 (24) and the spacer (25); nuts (27) are screwed at both ends of the connecting rod (26), and the nuts (27) are tightly fitted and fixed to the outer walls of the positioning kit 1 (22) and the positioning kit 3 (24).

5. A multi-way valve rotating bucket joint positioning device according to claim 4, characterized in that: The clamping groove (28) is annularly disposed at the inner edges of the first positioning sleeve (22) and the third positioning sleeve (24) and at the inner edges on both sides of the second positioning sleeve (23).

6. A multi-way valve rotating bucket joint positioning device according to claim 4, characterized in that: A spring piece positioning hole (29) is provided through the outer side of the slot (28) of the positioning kit 1 (22), the positioning kit 2 (23) and the positioning kit 3 (24) and the inner side of the connection rod (26) installation position, and a spring piece positioning pin (210) is fixedly installed inside the spring piece positioning hole (29).

7. A multi-way valve rotating bucket joint positioning device according to claim 4, characterized in that: The outer portion of the wire core (33) is sleeved with an outer sleeve (32), annular sheets are positioned and mounted at both ends of the outer sleeve (32), a fixing frame (31) is mounted on the bottom outer wall of the guide groove (211), and the outer sleeve (32) and the fixing frame (31) are fixedly mounted.

8. A multi-way valve rotating bucket joint positioning device according to claim 7, characterized in that: The annular spring piece (34) comprises a sleeve connecting piece (341) fixed to the wire core (33); the end of the sleeve connecting piece (341) is integrally cut with claw pieces (342) having the same number as the gaps between the first positioning set (22), the plurality of second positioning sets (23) and the third positioning set (24); one end of the claw piece (342) away from the sleeve connecting piece (341) is bent to form a spring piece head (343); a circular hole is provided at the center of the spring piece head (343), and the circular hole is sleeved with the outside of the spring piece positioning pin (210) for positioning.

9. A multi-way valve rotating bucket joint positioning device according to claim 8, characterized in that: The resetter (4) comprises a fixing member (41), a slot (42) is provided on one side of the fixing member (41), the slot (42) is fixedly mounted on the end of the outer sleeve (32), a flip member (44) is rotatably mounted inside the fixing member (41), a connector (35) is fixed to the end of the wire core (33), the connector (35) is hinged to one end of the flip member (44), a pressing member (46) is slidably connected to the other end of the flip member (44), the pressing member (46) slides linearly outside the fixing member (41), and a reset spring (47) is installed between the pressing member (46) and the fixing member (41).

10. A multi-way valve rotating bucket joint positioning device according to claim 9, characterized in that: The outer wall of the fixing member (41) is provided with a sliding groove (43), the pressing member (46) is slidably assembled inside the sliding groove (43), notches are provided on both sides of the flip member (44), a connecting pin (48) is slidably assembled at the installation position of the flip member (44) and the connecting head (35), and a sliding shaft (45) is slidably assembled at the other end of the pressing member (46) and the flip member (44).

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