CN115899199A

CN115899199A - Load-variable transfer mechanism and sediment pump

Info

Publication number: CN115899199A
Application number: CN202211568055.3A
Authority: CN
Inventors: 储百坤; 刘和明; 宋鹏克; 姜喜龙; 汪晶晶
Original assignee: Mingguang City Liuxiang Pump Industry Co ltd
Current assignee: Mingguang City Liuxiang Pump Industry Co ltd
Priority date: 2022-12-08
Filing date: 2022-12-08
Publication date: 2023-04-04
Anticipated expiration: 2042-12-08
Also published as: CN115899199B

Abstract

The invention discloses a variable load transfer mechanism and a sediment pump, which relate to the technical field of sediment pumps and comprise an energy supplementing assembly, wherein the energy supplementing assembly comprises: a center pole; the sleeve rod is movably sleeved on the central rod; the clamping structure comprises a first clamping part coaxially and rotatably connected to the central rod and a second clamping part coaxially and fixedly connected to the top of the loop bar, wherein one of the first clamping part and the second clamping part is provided with a plurality of arc-shaped grooves distributed in an annular array, and the other clamping part is provided with arc-shaped protrusions corresponding to the arc-shaped grooves one to one; the switching assembly is used for driving the sleeve rod and the central rod to be switched among clamping connection, rotary connection and movable connection; the conical spiral chain wheel is provided with a conical spiral surface, chain teeth are arranged on the conical spiral surface along the conical spiral direction, and the conical spiral chain wheel is coaxially and fixedly connected to the loop bar; the first shaft lever is fixedly connected with a connecting rod, the connecting rod is vertically connected with the central rod in a sliding mode, and the connecting rod is rotationally connected with the loop bar relatively.

Description

Load-variable transfer mechanism and sediment pump

Technical Field

The invention relates to the technical field of sediment pumps, in particular to a load-variable mooring mechanism and a sediment pump.

Background

The silt pump is also called as a sand suction pump, pumps and transfers silt at the bottom of the water, and is commonly used for dredging a river channel or exploiting the seabed. The rotating mooring device enables the ejector pipe of the silt pump to rotate relative to the pump body, and the ejector pipe is usually arranged on a rotating seat, and the pump body is arranged on a fixed seat, so that the direction of silt ejection is adjusted.

The driving force required by the rotation of the ejection pipe relative to the pump body is not constant, and is influenced by factors such as the posture of the silt pump, the working environment and the like, and the overload condition of the driving mechanism can occur in some cases (such as clamping stagnation), so that the ejection pipe is difficult to rotate relative to the pump body, and therefore, an energy supplementing mechanism is quite necessary to be arranged to assist the driving mechanism in driving the ejection pipe to rotate.

However, the existing energy supplementing mechanism needs to be provided with a motor for storing energy for the energy supplementing mechanism, and an elastic part of the energy supplementing mechanism gradually weakens along with the time when releasing elastic force, so that a basically constant energy supplement cannot be provided.

Disclosure of Invention

The invention aims to provide a variable-load transfer mechanism and a sediment pump, so as to solve the defects in the prior art.

In order to achieve the above purpose, the invention provides the following technical scheme: a variable load transfer mechanism comprising an energy charging assembly, the energy charging assembly comprising: a center pole; the sleeve rod is movably sleeved on the central rod; the clamping structure comprises a first clamping part coaxially and rotatably connected to the central rod and a second clamping part coaxially and fixedly connected to the top of the loop bar, wherein one of the first clamping part and the second clamping part is provided with a plurality of arc-shaped grooves distributed in an annular array, and the other clamping part is provided with arc-shaped bulges which correspond to the arc-shaped grooves one to one; the switching assembly is used for driving the sleeve rod and the central rod to be switched among clamping connection, rotary connection and movable connection; the conical spiral chain wheel is provided with a conical spiral surface, chain teeth are arranged on the conical spiral surface along the conical spiral direction, and the conical spiral chain wheel is coaxially and fixedly connected to the loop bar; the first shaft lever is fixedly connected with a connecting rod, the connecting rod is vertically connected with the central rod in a sliding manner, and the connecting rod is rotationally connected with the loop bar; a spring case, which is rotatably connected to the first shaft lever; the inner end of the clockwork spring is fixedly connected to the first shaft rod, and the outer end of the clockwork spring is fixedly connected to the inner wall of the spring box; the cylindrical body is fixedly connected to the spring box, a spiral groove is formed in the peripheral side face of the cylindrical body, and the height of the spiral groove corresponds to that of the conical spiral surface; one end of the first chain is fixedly connected to the chain tooth, farthest away from the axis, of the conical spiral chain wheel, the first chain is coiled and meshed along the conical spiral direction of the conical spiral chain wheel, the other end of the first chain is fixedly connected to the connecting end of the spiral groove, the height of the connecting end corresponds to the height of the chain tooth, closest to the axis, of the conical spiral chain wheel, the first chain is coiled along the spiral groove, and the portion, located between the conical spiral chain wheel and the cylinder, of the first chain tends to be horizontal.

Further, fixedly connected with guide bar on the connecting rod, the vertical slip is provided with the spacing ring on the guide bar, and week side of spacing ring is connected with the trigger lever firmly, and the one end that the spacing ring was kept away from to the trigger lever slides and sets up in the helicla flute, and the first chain part that is located between toper spiral sprocket and the cylinder passes the spacing ring.

Furthermore, both ends of the limiting ring are horn-shaped.

The clamping device further comprises a fixed seat and a driving mechanism, wherein the fixed seat is rotatably connected with a rotating seat, the central rod is fixedly connected to the rotating seat, the fixed seat is coaxially and fixedly connected with a gear ring, and the first clamping part is coaxially and fixedly connected with a first gear; the driving mechanism is arranged on the rotating seat in a sliding mode along a circular arc path with the center of the first gear as the circle center, the driving mechanism comprises a driving motor and a driving gear coaxially and fixedly connected to an output shaft of the driving motor, the driving gear is meshed with the first gear, and a driving station for enabling the driving gear to be meshed with the gear ring is arranged in the sliding stroke of the driving mechanism on the rotating seat; the rotating seat is rotatably connected with a second gear, the second gear is meshed with the gear ring, the spring releases elasticity, the elastic force of the spring is transmitted through the cylinder, the first chain and the conical spiral chain wheel to enable the loop bar to rotate, and the loop bar enables the second gear to rotate in the same direction as the driving gear through the transmission assembly.

Furthermore, a first elastic unit is arranged between the rotating seat and the driving motor, and the driving mechanism is driven to move to the driving station by the deformation recovery process of the first elastic unit.

Furthermore, an annular groove is formed in the inner wall of the sleeve rod, and a plurality of through holes penetrating through the sleeve rod are formed in the bottom of the annular groove; the switching subassembly includes a plurality of sliding parts that are the annular and distribute, and each sliding part slides and sets up on well core rod, has in the sliding stroke of sliding part: the sliding part is movably connected with the inner wall of the loop bar, and the first clamping part is clamped and matched with the second clamping part under the action of the elastic force of the second elastic unit; the sliding parts slide into the corresponding through holes so as to be clamped and locked with the loop bar; the energy releasing station, the sliding part slides into the annular groove, so that the sliding part is rotationally connected with the loop bar; the switching assembly further comprises: the third elastic unit drives the sliding part to slide from the central rod to the loop bar in the process of restoring the deformation; a plurality of wedge blocks fixedly connected with the sliding parts in a one-to-one correspondence manner; the sliding ring is arranged in the central rod in a sliding manner along the axial direction of the central rod, wedge-shaped openings which are in one-to-one corresponding sliding fit with the inclined surfaces of the wedge-shaped blocks are formed in the sliding ring, and when the sliding ring slides along one direction, the sliding part is driven to slide to the central rod from the loop bar through the fit between each wedge-shaped opening and each wedge-shaped block; and the driving piece is used for driving the sliding ring to slide.

Furthermore, the driving piece is a hydraulic cylinder, a cylinder body of the hydraulic cylinder is fixedly connected to the central rod, and a hydraulic rod of the hydraulic cylinder is fixedly connected with the sliding ring through a connecting rod.

Further, the transmission assembly includes: the second shaft lever is fixedly connected with the rotating seat, and the second gear is coaxially and rotatably connected to the second shaft lever; the support rod is fixedly connected to the end face of the second gear; the pawl is elastically and rotatably connected to the support rod; the sleeve is rotatably sleeved on the shaft lever; the ratchet wheel is coaxially and fixedly connected to the sleeve, and the pawl is matched with the ratchet of the ratchet wheel; the first chain wheel is coaxially and fixedly connected to the sleeve; the second chain wheel is coaxially and slidably connected to the loop bar, and the first chain wheel is rotatably connected with the central rod; and the annular chain is in transmission connection with the first chain wheel and the second chain wheel.

Further, the pawl is rotatably connected with the supporting rod through a rotating shaft, a torsion spring is movably sleeved on the rotating shaft, one end of the torsion spring is fixedly connected with the supporting rod, and the other end of the torsion spring is fixedly connected with the pawl.

A silt pump comprises the variable-load transfer mechanism.

In the above technical solution, according to the variable load transfer mechanism provided by the present invention, after the spring is fully charged with energy, when the switching component drives the sleeve rod to rotationally connect with the central rod, the spring releases energy, the spring drives the spring case and the cylinder to rotate, the cylinder starts to wind the first chain, the first chain wound around the tapered spiral sprocket drives the tapered spiral sprocket to rotate, and the first chain unwinds from the tapered portion to the bottom portion of the tapered spiral sprocket.

As the variable load transfer mechanism has the technical effects, the sediment pump comprising the variable load transfer mechanism also has the corresponding technical effects.

Drawings

In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.

FIG. 1 is a schematic structural diagram of a variable load transfer mechanism according to an embodiment of the present invention;

FIG. 2 is a schematic partial structural diagram of a variable-load transfer mechanism according to an embodiment of the present invention;

FIGS. 3-4 are schematic structural diagrams provided by another embodiment of the present invention;

FIG. 5 isbase:Sub>A cross-sectional view of the structure taken along line A-A of FIG. 4 according to an embodiment of the present invention;

FIG. 6 is an enlarged view of the structure at C in FIG. 5 according to an embodiment of the present invention;

FIG. 7 is a cross-sectional view of the structure taken along line B-B of FIG. 4 according to an embodiment of the present invention;

fig. 8 is a structural sectional view of a loop bar according to an embodiment of the present invention.

Description of the reference numerals:

1. a center pole; 2. a loop bar; 2.1, an annular groove; 2.2, through holes; 3. a first clamping part; 4. a second clamping part; 5. a second elastic unit; 6. a switching component; 6.1, a sliding part; 6.2, a third elastic unit; 6.3, wedge blocks; 6.4, a slip ring; 6.5, a driving piece; 7. a conical helical sprocket; 8. a first shaft lever; 9. a connecting rod; 10. a spring case; 11. a clockwork spring; 12. a cylinder; 13. a first chain; 14. a guide bar; 15. a limiting ring; 16. a trigger lever; 17. a fixed seat; 18. a drive mechanism; 18.1, driving a motor; 18.2, driving the gear; 19. a rotating seat; 20. a ring gear; 21. a first gear; 22. a second gear; 23. a transmission assembly; 23.1, a second shaft rod; 23.2, a support rod; 23.3, a pawl; 23.4, a sleeve; 23.5, ratchet wheels; 23.6, a first sprocket; 23.7, a second sprocket; 23.8, an annular chain; 23.9, a torsion spring; 24. a first elastic unit; 25. and a connecting frame.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings.

Referring to fig. 1-8, a variable load transfer mechanism according to an embodiment of the present invention includes an energy compensation assembly, the energy compensation assembly includes a central rod 1, a sleeve rod 2, a clamping structure, a switching assembly 6, a conical spiral sprocket 7, a first shaft rod 8, a spring case 10, a clockwork spring 11, a cylinder 12, and a first chain 13, wherein the sleeve rod 2 is movably sleeved on the central rod 1, the clamping structure includes a first clamping portion 3 coaxially and rotatably connected to the central rod 1 and a second clamping portion 4 coaxially and fixedly connected to a top of the sleeve rod 2, one of the first clamping portion 3 and the second clamping portion 4 is provided with a plurality of arc-shaped grooves distributed in an annular array, the other one is provided with arc-shaped protrusions corresponding to the arc-shaped grooves one by one, the switching assembly 6 is configured to drive the sleeve rod 2 and the central rod 1 to switch between clamping, rotating connection, and movable connection, the conical spiral sprocket 7 has a conical spiral surface, the conical helical surface is provided with sprockets arranged along the conical helical direction, the conical helical sprocket 7 is coaxially and fixedly connected to the loop bar 2, the first shaft bar 8 is fixedly connected with the connecting rod 9, the connecting rod 9 is vertically and slidably connected with the central rod 1, the connecting rod 9 is rotatably connected with the loop bar 2, the spring box 10 is rotatably connected to the first shaft bar 8, the inner end of the clockwork spring 11 is fixedly connected to the first shaft bar 8, the outer end of the clockwork spring is fixedly connected to the inner wall of the spring box 10, the cylinder 12 is fixedly connected to the spring box 10, the circumferential side surface of the cylinder 12 is provided with a spiral groove, the height of the spiral groove corresponds to the height of the conical helical surface, one end of the first chain 13 is fixedly connected to the sprocket which is farthest from the axis of the conical helical sprocket 7, the first chain is coiled and meshed along the conical helical direction of the conical helical sprocket 7, and the other end of the sprocket is fixedly connected to the connecting end of the spiral groove, the height of the connecting end corresponds to the height of the tooth closest to the axis of the conical helical sprocket 7, the first chain is coiled along the helical groove, and the portion of the first chain between the conical helical sprocket 7 and the cylindrical body 12 tends to be horizontal.

Specifically, when the switching assembly 6 drives the sleeve rod 2 to be movably connected with the central rod 1, that is, the sleeve rod 2 can axially slide and circumferentially rotate relative to the central rod 1, the second clamping portion 4 is clamped with the first clamping portion 3, that is, the arc-shaped protrusion enters the arc-shaped groove, the first clamping portion 3 is driven to rotate to store energy for the energy supplementing assembly, that is, the first clamping portion 3 is a power input end when the energy supplementing assembly stores energy, the first clamping portion 3 rotates to drive the second clamping portion 4 in clamping fit with the first clamping portion to rotate, so that the sleeve rod 2 and the conical helical sprocket 7 rotate, the conical helical sprocket 7 starts to wind the first chain 13 from the bottom, the first chain 13 wound on the cylinder 12 is unwound from the cylinder 12, so as to drive the cylinder 12 to rotate, and the cylinder 12 drives the spring box 10 to rotate, so that the clockwork spring 11 stores energy; when the energy of the clockwork spring 11 is fully stored, the second clamping portion 4, the loop bar 2 and the axial sliding and circumferential rotation slide downwards relative to the central rod 1, so that the second clamping portion 4 is separated from clamping with the first clamping portion 3, the switching component 6 drives the loop bar 2 to be in clamping fit with the central rod 1, namely the loop bar 2 and the conical spiral chain wheel 7 cannot slide axially and rotate circumferentially relative to the central rod 1, and therefore the clockwork spring 11 is locked after being fully stored with the energy, and the clockwork spring 11 is kept in an energy storage state; when the switching assembly 6 drives the loop bar 2 to be rotationally connected with the central rod 1, namely, the loop bar 2 can rotate relative to the circumferential direction of the central rod 1, but the loop bar 2 cannot move relative to the axial direction of the central rod 1, the elastic force of the spring 11 is released, the spring case 10 and the cylinder 12 are driven to rotate, the cylinder 12 starts to wind the first chain 13, the first chain 13 wound on the conical spiral sprocket 7 drives the conical spiral sprocket 7 to rotate, the first chain 13 is unwound from the conical part of the conical spiral sprocket 7 to the bottom, in the process, the torque of the spring 11 at the moment when the spring 11 starts to release the elastic force is the largest, the released force is the largest, the torque released by the spring 11 is gradually reduced along with the gradual release of the elastic force, the elastic force is also gradually reduced for the conical spiral sprocket 7, the unwinding radius of the first chain 13 on the conical spiral sprocket 7 is gradually increased, the unwinding radius of the first chain 13 on the conical spiral sprocket 7 is increased with the energy of the conical spiral sprocket 11, so that the energy of the conical spiral sprocket 7 is increased in a reverse proportion, and the energy of the loop bar 2 can be stably output as the loop bar 2 can pass through the output end of the loop bar 2.

In another embodiment provided by the invention, a guide rod 14 is fixedly connected to the connecting rod 9, a limiting ring 15 is vertically and slidably arranged on the guide rod 14, preferably, both ends of the limiting ring 15 are horn-shaped, a trigger rod 16 is fixedly connected to the peripheral side of the limiting ring 15, one end of the trigger rod 16 far away from the limiting ring 15 is slidably arranged in the spiral groove, and the first chain part between the conical spiral sprocket 7 and the cylinder 12 passes through the limiting ring 15. Cylinder 12 rotates the in-process, through sliding fit between helicla flute and the trigger bar 16 to drive the high adaptive control of spacing ring 15, spacing ring 15 can drive the first chain 13 that passes it and carry out the altitude mixture control, thereby can promote first chain 13 to coil along the helicla flute or first chain 13 is followed, and toper spiral sprocket 7 coils.

In still another embodiment of the present invention, the device further includes a fixed seat 17 and a driving mechanism 18, the fixed seat 17 is rotatably connected with a rotating seat 19, the central rod 1 is fixedly connected to the rotating seat 19, the fixed seat is coaxially and fixedly connected with a gear ring 20, the first clamping portion 3 is coaxially and fixedly connected with a first gear 21, the driving mechanism 18 is slidably disposed on the rotating seat 19 along an arc-shaped path with the center of the first gear 21 as a circle center, the driving mechanism 18 includes a driving motor 18.1 and a driving gear 18.2 coaxially and fixedly connected to an output shaft of the driving motor 18.1, the driving gear 18.2 is engaged with the first gear 21, a housing of the driving motor of the driving mechanism is fixedly connected with a mounting rack, the driving mechanism is slidably engaged with the rotating seat through the mounting rack, the driving mechanism 18 has a driving station for engaging the driving gear 18.2 with the gear ring 20 during a sliding stroke of the driving mechanism 18 on the rotating seat 19, at the driving station, the driving mechanism 18 is engaged with the gear ring 20 through the driving gear 18.2 so as to drive the rotating seat 19 to rotate relative to the rotating seat 17, the rotating seat 19 is preferably connected with a first elastic tension spring for driving unit, and a first tension spring is preferably connected to the first tension spring for driving unit to drive the first tension spring for driving unit to restore the first tension spring; the spring 11 releases the elastic force and drives the sleeve rod 2 to rotate through the cylinder 12, the first chain and the conical spiral sprocket 7, the sleeve rod 2 drives the second gear 22 to rotate in the same direction as the driving gear 18.2 through the transmission assembly 23, and therefore the energy supplementing assembly can assist the driving mechanism 18 to drive the rotating seat 19 to rotate relative to the fixed seat 17 together. The energy supplementing assembly can utilize redundant driving force to store energy in the process that the driving mechanism 18 drives the rotating seat 19 to rotate, and can release the stored energy when the driving motor 18.1 is overloaded, so that the driving mechanism 18 is assisted to drive the rotating seat 19 together, and the rotating seat 19 can be promoted to rotate smoothly relative to the fixed seat 17. When the rotation resistance of the rotating seat 19 relative to the fixed seat 17 is too large, the driving mechanism 18 cannot drive the rotating seat 19 to rotate alone, and the energy supplementing assembly cannot store energy, the driving motor 18.1 drives the rotating force of the driving gear 18.2 to generate a pressing force between the gear teeth of the driving gear 18.2 and the engaged gear teeth of the gear ring 20 to generate relative sliding, so that the driving mechanism 18 overcomes the elastic force of the first elastic unit 24 to generate sliding relative to the rotating seat 19, and the driving gear 18.2 is disengaged from the driving station, that is, the driving gear 18.2 is disengaged from the gear ring 20, at this time, not only is the driving motor provided with an overload protection effect, but also the driving force of the driving mechanism 18 can be only used for energy storage of the energy supplementing assembly, and when the energy storage of the energy supplementing assembly is finished, the elastic force of the first elastic unit 24 still enables the driving gear 18.2 to reset to the driving station, and the energy supplementing assembly starts to release the stored energy, so as to assist the driving mechanism 18 to drive the rotating seat 19 together, and promote the rotating seat 19 to rotate smoothly relative to the fixed seat 17.

As the preferred technical scheme of the invention, the inner wall of the loop bar 2 is provided with an annular groove 2.1, and the bottom of the annular groove 2.1 is provided with a plurality of through holes 2.2 penetrating through the loop bar 2; switching module 6 includes a plurality of sliding parts 6.1 that are the annular and distribute, and each sliding part 6.1 sets up on well core rod 1 along well core rod 1's radial slip, has in the slip stroke of sliding part 6.1: the energy storage station is characterized in that a sliding part 6.1 is movably connected with the inner wall of the loop bar 2, and a first clamping part 3 is clamped and matched with a second clamping part 4 under the action of the elasticity of a second elastic unit 5; the sliding parts 6.1 slide into the corresponding through holes 2.2 so that the sliding parts 6.1 are clamped and locked with the loop bar 2; in the energy releasing station, the sliding part 6.1 slides into the annular groove 2.1, so that the sliding part 6.1 is rotationally connected with the loop bar 2; specifically, the bottom of the central rod 1 is fixedly connected with a connecting frame 25, the connecting frame 25 is fixedly connected with a circular ring, and the circular ring is movably sleeved on the periphery of the loop bar 2. The second elastic unit 5 is preferably a second pressure spring, the second pressure spring is movably sleeved on the loop bar 2, one end of the second pressure spring abuts against the circular ring, and the other end of the second pressure spring abuts against the connecting rod 9. Preferably, the connecting rod 9 is vertically slidably arranged on the connecting frame 25; the switching assembly 6 further comprises a third elastic unit 6.2, a plurality of wedge blocks 6.3, a sliding ring 6.4 and a driving piece 6.5, wherein the sliding portion 6.1 is driven to slide from the central rod 1 to the loop bar 2 in the process of restoring the deformation of the third elastic unit 6.2, the third elastic unit 6.2 is preferably a third pressure spring, one end of the third pressure spring is abutted to the sliding portion 6.1, the other end of the third pressure spring is abutted to the bottom wall of a blind hole in the central rod 1, which contains the sliding portion 6.1, the plurality of wedge blocks 6.3 are fixedly connected with the sliding portions 6.1 in a one-to-one correspondence manner, the sliding ring 6.4 is arranged in the central rod 1 in a sliding manner along the axial direction of the central rod 1, the sliding ring 6.4 is provided with wedge ports in one-to-one correspondence manner with inclined surfaces of the wedge blocks 6.3, and when the sliding ring 6.4 slides along one direction, the sliding portions 6.1 are driven to slide from the loop bar 2 to the loop bar 1 through the cooperation between the wedge blocks 6.3; the driving piece 6.5 is used for driving the sliding ring 6.4 to slide, the driving piece 6.5 is a hydraulic cylinder, a cylinder body of the hydraulic cylinder is fixedly connected to the central rod 1, and a hydraulic rod of the hydraulic cylinder is fixedly connected with the sliding ring 6.4 through a connecting rod.

In the technical scheme, the elastic force of the second elastic unit 5 enables the second clamping portion 4 to be clamped with the first clamping portion 3, namely, the arc-shaped protrusion enters the arc-shaped groove, the sliding portion 6.1 is located at the energy storage station movably abutted to the inner wall of the loop bar 2, the sliding portion 6.1 is accommodated in a blind hole in the central rod 1, the sliding portion 6.1 and the through hole 2.2 are staggered in the vertical direction, and the through hole 2.2 is located above the sliding portion 6.1; the driving mechanism 18 drives the first gear 21 to rotate through the driving gear 18.2, the first gear 21 drives the first clamping portion 3 on the first gear to rotate together, the first clamping portion 3 drives the second clamping portion 4 in clamping fit with the first clamping portion to rotate, the second clamping portion 4 drives the loop bar 2 and the conical spiral chain wheel 7 to rotate, the conical spiral chain wheel 7 starts to wind the first chain 13 from the bottom to the conical portion, the first chain 13 wound on the cylinder 12 unwinds from the cylinder 12, so that the cylinder 12 is driven to rotate, the cylinder 12 drives the spring box 10 to rotate, and the spring 11 is elastically deformed to store energy; when the energy of the clockwork spring 11 is fully stored, the rotation of the spring case 10 is hard to rotate due to the great resistance, so that the second clamping portion 4 is hard to continue to rotate, the first gear 21 and the first clamping portion 3 continue to rotate under the driving of the driving mechanism 18, so that the arc-shaped protrusion and the arc-shaped groove relatively slide, the second clamping portion 4 axially overcomes the elastic force of the second elastic unit 5 to move downwards along the central rod 1, the second clamping portion 4 drives the loop bar 2, the conical spiral sprocket 7, the connecting rod 9, the first shaft rod 8, the spring case 10, the clockwork spring 11, the cylinder 12 and the first chain 13 to move downwards together, so that the annular groove 2.1 on the loop bar 2 is aligned with the sliding portion 6.1, the sliding portion 6.1 enters the annular groove 2.1 under the elastic force of the third elastic unit 6.2, and if the through hole 2.2 on the loop bar 2 is aligned with the sliding portion 6.1, the sliding portion 6.1 slides into the through hole 2.2 under the elastic force of the third elastic unit 6.2, if the through hole 2.2 in the loop bar 2 is not aligned with the sliding part 6.1, the clockwork spring 11 can automatically release a little elastic force to enable the spring box 10 to rotate, the spring box 10 drives the loop bar 2 to rotate together through the cylinder 12, the first chain and the conical spiral chain wheel 7 until the through hole 2.2 in the loop bar 2 is aligned with the sliding part 6.1, the sliding part 6.1 slides into the through hole 2.2 under the elastic force action of the third elastic unit 6.2, namely the sliding part 6.1 moves to the locking station, so that the loop bar 2 cannot rotate and slide relative to the central rod 1, the transmission connection with the driving mechanism 18 is automatically disconnected after the energy supplementing assembly is fully stored, the clockwork spring 11 is kept in the energy storage state, and the phenomenon that the energy supplementing assembly is damaged or disconnected due to premature failure of energy storage of the energy supplementing assembly due to untimely disconnection when the transmission connection between the spring box 10 and the first gear 21 is actively disconnected is avoided The case (1); when the rotating resistance of the rotating seat 19 relative to the fixed seat 17 is too large, and the driving mechanism 18 cannot independently drive the rotating seat 19 to rotate due to overload, the driving member 6.5 drives the sliding ring 6.4 to slide upwards, the sliding ring 6.4 drives each sliding portion 6.1 to slide from the loop bar 2 to the central bar 1 through the matching between each wedge-shaped opening and each wedge-shaped block 6.3, so that the sliding portion 6.1 slides from the through hole 2.2 to the annular groove 2.1, at this time, the sliding portion 6.1 is located at the discharging station, the loop bar 2 can rotate relative to the central bar 1, but the loop bar 2 cannot slide relative to the central bar 1 in the axial direction, the elastic force of the clockwork spring 11 is released, the spring box 10 is driven to rotate, the spring box 10 drives the loop bar 2 to rotate together through the cylinder 12, the first chain and the conical spiral sprocket 7, the second gear 22 is driven to rotate by the transmission assembly 23 during the rotation of the loop bar 2, the second gear 22 drives the gear 20 to rotate, thereby assisting the driving mechanism 18 to drive the rotating seat 19 to smoothly rotate relative to the rotating seat 17; when the energy accumulated by the clockwork spring 11 is exhausted, the driving part 6.5 drives the sliding ring 6.4 to continuously move upwards, the sliding ring 6.4 drives each sliding part 6.1 to slide from the sleeve rod 2 to the central rod 1 through the matching between each wedge-shaped opening and each wedge-shaped block 6.3, so that the sliding part 6.1 slides from the annular groove 2.1 to be completely accommodated in the blind hole, at the moment, the sleeve rod 2 can rotate circumferentially and slide axially relative to the central rod 1, the elastic force of the second elastic unit 5 is released, the elastic force of the second elastic unit 5 drives the sleeve rod 2, the second clamping part 4, the conical spiral sprocket 7, the connecting rod 9, the first shaft rod 8, the spring box 10, the clockwork spring 11, the cylinder 12 and the first chain 13 to move upwards together, so that the second clamping part 4 is clamped with the first clamping part 3, namely, the arc-shaped bulge enters the arc-shaped groove, and at the moment, the sliding part 6.1 is positioned at an energy storage station which is movably abutted to the inner wall of the sleeve rod 2.

As a preferred technical scheme of the invention, the transmission assembly 23 comprises a second shaft rod 23.1, a support rod 23.2, a pawl 23.3, a sleeve 23.4, a ratchet wheel 23.5, a first chain wheel 23.6, a second chain wheel 23.7 and an annular chain 23.8, wherein the second shaft rod 23.1 is fixedly connected with the rotating seat 19, the second gear 22 is coaxially and rotatably connected to the second shaft rod 23.1, the support rod 23.2 is fixedly connected to the end face of the second gear 22, the pawl 23.3 is elastically and rotatably connected to the support rod 23.2, the sleeve 23.4 is rotatably sleeved on the shaft rod, the ratchet wheel 23.5 is coaxially and fixedly connected to the sleeve 23.4, the pawl 23.3 is matched with the ratchet of the ratchet wheel 23.5, the first chain wheel 23.6 is coaxially and fixedly connected to the sleeve 23.4, the second chain wheel 23.7 is coaxially and slidably connected to the sleeve 2, the first chain wheel 23.6 is rotatably connected to the central rod 1, and the annular chain wheel 23.8 is in a transmission connection with the first chain wheel 23.6 and the second chain wheel 23.7. Specifically, the pawl 23.3 is rotatably connected with the support rod 23.2 through a rotating shaft, a torsion spring 23.9 is movably sleeved on the rotating shaft, one end of the torsion spring 23.9 is fixedly connected with the support rod 23.2, and the other end of the torsion spring is fixedly connected with the pawl 23.3.

In this technical scheme, loop bar 2 can not drive second sprocket 23.7 along the axial removal of well core rod 1 and move together, but when clockwork spring 11 released energy, the rotation of loop bar 2 then can drive second sprocket 23.7 synchronous revolution, second sprocket 23.7 drives first sprocket 23.6 through endless chain 23.8 and rotates, first sprocket 23.6 drives sleeve 23.4 and ratchet 23.5 and rotates together, ratchet 23.5 and pawl 23.3 joint cooperation, make pawl 23.3, branch 23.2 and second gear 22 rotate together, second gear 22 then drives the ring gear and rotates. And when the energy storage mechanism does not release energy, only the driving mechanism 18 is matched with the gear ring 20 to drive the rotating seat 19 to rotate, so that the second gear 22 meshed with the gear ring 20 also rotates, and the second gear 22 drives the pawl 23.3 to slide over the gear teeth of the ratchet wheel 23.5, so that the transmission assembly 23 cannot reversely transmit the energy supplementing assembly.

The invention also provides a silt pump which comprises the variable-load transfer mechanism, and the silt pump has the effect of the variable-load transfer mechanism.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.

Claims

1. A variable load transfer mechanism comprising an energy charging assembly, the energy charging assembly comprising:

a center pole;

the sleeve rod is movably sleeved on the central rod;

the clamping structure comprises a first clamping part coaxially and rotatably connected to the central rod and a second clamping part coaxially and fixedly connected to the top of the loop bar, wherein one of the first clamping part and the second clamping part is provided with a plurality of arc-shaped grooves distributed in an annular array, and the other clamping part is provided with arc-shaped bulges which correspond to the arc-shaped grooves one to one;

the switching assembly is used for driving the sleeve rod and the central rod to be switched among clamping connection, rotary connection and movable connection;

the conical spiral chain wheel is provided with a conical spiral surface, chain teeth are arranged on the conical spiral surface along the conical spiral direction, and the conical spiral chain wheel is coaxially and fixedly connected to the loop bar;

the first shaft lever is fixedly connected with a connecting rod, the connecting rod is vertically connected with the central rod in a sliding manner, and the connecting rod is rotationally connected with the loop bar;

a spring case rotatably connected to the first shaft;

a clockwork spring having an inner end fixedly connected to the first shaft and an outer end fixedly connected to an inner wall of the spring case;

the cylindrical body is fixedly connected to the spring box, a spiral groove is formed in the peripheral side face of the cylindrical body, and the height of the spiral groove corresponds to that of the conical spiral surface;

one end of the first chain is fixedly connected to the chain tooth, farthest away from the axis, of the conical spiral chain wheel, the first chain is coiled and meshed along the conical spiral direction of the conical spiral chain wheel, the other end of the first chain is fixedly connected to the connecting end of the spiral groove, the height of the connecting end corresponds to the height of the chain tooth, closest to the axis, of the conical spiral chain wheel, the first chain is coiled along the spiral groove, and the portion, located between the conical spiral chain wheel and the cylinder, of the first chain tends to be horizontal.

2. The variable-load transfer mechanism according to claim 1, wherein a guide rod is fixedly connected to the connecting rod, a limit ring is vertically slidably disposed on the guide rod, a trigger rod is fixedly connected to the periphery of the limit ring, one end of the trigger rod, which is far away from the limit ring, is slidably disposed in the spiral groove, and the first chain portion, which is located between the conical spiral sprocket and the cylinder, passes through the limit ring.

3. The variable load transfer mechanism of claim 2, wherein both ends of the retainer ring are flared.

4. The variable-load transfer mechanism according to claim 1, further comprising a fixed seat and a driving mechanism, wherein the fixed seat is rotatably connected with a rotating seat, the central rod is fixedly connected with the rotating seat, the fixed seat is coaxially and fixedly connected with a gear ring, and the first clamping portion is coaxially and fixedly connected with a first gear;

the driving mechanism is arranged on the rotating seat in a sliding mode along a circular arc path with the center of the first gear as the circle center, the driving mechanism comprises a driving motor and a driving gear coaxially and fixedly connected to an output shaft of the driving motor, the driving gear is meshed with the first gear, and a driving station for enabling the driving gear to be meshed with the gear ring is arranged in the sliding stroke of the driving mechanism on the rotating seat;

the rotating seat is rotatably connected with a second gear, the second gear is meshed with the gear ring, the spring releases elasticity, the elastic force of the spring is transmitted through the cylinder, the first chain and the conical spiral chain wheel to enable the loop bar to rotate, and the loop bar enables the second gear to rotate in the same direction as the driving gear through the transmission assembly.

5. The variable-load transfer mechanism according to claim 4, wherein a first elastic unit is arranged between the rotating seat and the driving motor, and the driving mechanism is driven to move to the driving station by the first elastic unit in the process of restoring the deformation.

6. The variable load transfer mechanism of claim 4, wherein the inner wall of the loop bar is provided with an annular groove, and the bottom of the annular groove is provided with a plurality of through holes penetrating through the loop bar;

the switching subassembly includes a plurality of sliding parts that are the annular and distribute, and each sliding part slides and sets up on well core rod, has in the sliding stroke of sliding part:

the sliding part is movably abutted against the inner wall of the sleeve rod, and the first clamping part is clamped and matched with the second clamping part under the action of the elastic force of the second elastic unit;

the sliding parts slide into the corresponding through holes so as to be clamped and locked with the loop bar;

the energy releasing station is arranged, and the sliding part slides into the annular groove so as to enable the sliding part to be rotationally connected with the loop bar;

the switching assembly further comprises:

the third elastic unit drives the sliding part to slide from the central rod to the loop bar in the process of restoring the deformation;

a plurality of wedge blocks which are fixedly connected with the sliding parts in a one-to-one correspondence manner;

the sliding ring is arranged in the central rod in a sliding mode along the axial direction of the central rod, wedge-shaped openings in one-to-one corresponding sliding fit with the inclined surfaces of the wedge-shaped blocks are formed in the sliding ring, and when the sliding ring slides along one direction, the sliding ring drives the sliding parts to slide from the loop rod to the central rod through the fit between the wedge-shaped openings and the wedge-shaped blocks;

and the driving piece is used for driving the sliding ring to slide.

7. The variable load transfer mechanism of claim 6, wherein the driving member is a hydraulic cylinder, a cylinder body of the hydraulic cylinder is fixedly connected to the central rod, and a hydraulic rod of the hydraulic cylinder is fixedly connected to the slip ring through a connecting rod.

8. The variable load transfer mechanism of claim 6, wherein the transmission assembly comprises:

the second shaft lever is fixedly connected with the rotating seat, and the second gear is coaxially and rotatably connected to the second shaft lever;

the support rod is fixedly connected to the end face of the second gear;

the pawl is elastically and rotatably connected to the support rod;

the sleeve is rotatably sleeved on the shaft lever;

the ratchet wheel is coaxially and fixedly connected to the sleeve, and the pawl is matched with the ratchet of the ratchet wheel;

the first chain wheel is coaxially and fixedly connected to the sleeve;

the second chain wheel is coaxially and slidably connected to the loop bar, and the first chain wheel is rotatably connected with the central rod;

and the annular chain is in transmission connection with the first chain wheel and the second chain wheel.

9. A variable load transfer mechanism according to claim 8 wherein the pawl is rotatably connected to the rod by a shaft, the shaft is movably sleeved with a torsion spring, one end of the torsion spring is fixedly connected to the rod, and the other end of the torsion spring is fixedly connected to the pawl.

10. A silt pump including a variable load mooring mechanism as claimed in any one of claims 1 to 9.