CN112320546A

CN112320546A - Control system of hoisting cage speed changer

Info

Publication number: CN112320546A
Application number: CN202011219090.5A
Authority: CN
Inventors: 索斐然
Original assignee: Tianjin Hanghao Electromechanical Equipment Co ltd
Current assignee: Tianjin Hanghao Electromechanical Equipment Co ltd
Priority date: 2020-11-04
Filing date: 2020-11-04
Publication date: 2021-02-05

Abstract

The invention belongs to the technical field of lifting equipment, and provides a control system of a speed changer of a lifting cage, which comprises a cage body, wherein the cage body is connected with a power device, and a speed changing device is arranged between the power device and the cage body, wherein the speed changing device comprises a hydraulic device, the hydraulic device is respectively connected with a gear lever and a transmission device, and the transmission device is connected with a transmission driving device; the invention adopts other power devices besides electric power, so that the dependence on the electric power can be weakened, and the electric vehicle can still normally work in the environment with insufficient electric power; the speed change device can conveniently regulate the speed of the power device, has the advantages of convenient speed regulation, large adjustable range and convenient use, and overcomes the defect of excessive dependence on electric power in the prior art.

Description

Control system of hoisting cage speed changer

Technical Field

The invention relates to the technical field of lifting equipment, in particular to a control system of a lifting cage speed changer; belongs to the IPC classification system B66B1/24, B66B11/00 and B66B 5/00.

Background

In mining operations of mines, coal mines and the like, a cage is one of important devices in mine lifting, and the cage is generally used for auxiliary shaft lifting of the mines and used for lifting personnel, ores, equipment, materials and the like; in the prior art, a power source of a cage generally adopts a motor, and a lifting cage is similar to the principle of an escalator and an elevator, but because mines and coal mines are located in remote fields, sufficient power supply cannot be guaranteed like cities; the other is to use manpower to lift, so that the manpower is more laborious and wastes manpower when encountering heavier articles, and the working efficiency is lower; the invention aims to invent a cage for lifting objects and other non-personnel transportation, which adopts other power sources and can weaken the dependence on electric power; the inventor searches the invention as detailed and comprehensive as possible to obtain the following prior art, and simply introduces the prior art and makes a relevant comparison with the technical scheme of the invention so as to better understand the inventive concept of the invention and show the technical advantages and the technical characteristics of the invention.

Prior art 1: GB19200016062, which discloses a device for minimising the stress created by the descent of a cage which normally descends a small distance after the hooks are released and when such movement of the cage is prevented, the force of impact is increased (the hooks exert excessive pressure when the cards are clamped); the aim of the invention is to minimize such stresses in a very simple and effective manner, and for this purpose the invention broadly introduces a resilient structure, in particular a catch made of a resilient washer or spring oil; the stress generated when the cage body descends is reduced through the elastic structure; in the technical scheme, a power device for lifting the mine cage and a speed change device of the power device are not involved, so that how to change the speed of the power device cannot be known, and the stability of the cage body in rising is ensured;

prior art 2: GB19190002711, which discloses a mine cage safety device for supporting a cage of a coal mine or an elevator in the event of a cable or hoisting cable breakage, of the type in which, in addition to the hoisting cable, which is normally secured to one of one or more cables respectively, in a pair of lightning protection cages or similar and their winding arrangements, additional cables (e.g. wire ropes) are secured to one lightning protection cage at each end respectively and are guided in the wellhead to an on-sheave frame provided with a brake drum at the stub shaft, so that if the main winding cable breaks, the additional cable will support the cage and the cage can be braked by braking action; hitherto, in such safety arrangements, the proposed construction has caused the brake drums and their braking surfaces to automatically apply to each other upon breakage of the primary winding rope, by causing the pulleys of the brake drums to be depressed by the action of the supporting springs; releasing the weighted lever to cause the brake lever to tighten the brake drum under the action of a load applied to the additional cable or when the weighted lever is brought into contact with the brake surface due to the depression thus generated by the sheave; in the former case, it is also proposed to provide additional content, the brake pads being arranged to be applied by hand through connection with the engine compartment; now, in these previously proposed constructions, the brake is automatically applied to seize the cage to transfer the load from the normal rope to the additional cable, which may occur without breakage of the rope, thus interfering with the lowering of the cage by the corresponding cable; according to the invention, although the cage is braked by means of a braking surface automatically applied to the brake drum by the action of a weighted lever released, but the release of such a weighted lever does not rely on the transfer to the brake disc, the addition of cables, but under the control of and influenced by the engineer in the nacelle, the invention provides two normally wound ropes or cables, each fixed to the chain of the lightning protection cage, respectively, and suspending and lowering and raising said lightning protection cage in the usual way, these winding ropes or cables are respectively on separate reels at the top of the frame, pulleys are mounted above the wellhead frame, and an auxiliary cable is included, the two ends of the auxiliary cable are respectively fixed on the mine cage and the lightning protection cage, the auxiliary cable extends on the pulley according to the movement of the lightning protection cage which moves relatively, if one of the main cables breaks, the auxiliary cable will support its cage by its connection to the other cage as well; in the technical scheme, a power device for lifting the mine cage and a speed change device of the power device are not involved, so that how to change the speed of the power device cannot be known, and the stability of the cage body in rising is ensured;

prior art 3: chinese patent No. CN109607359A, which proposes a power generation and utilization system applied to a mine cage, comprising a cage body and a power generation and utilization system located in the cage body; the power generation and utilization system comprises an illuminating lamp, a generator, a storage battery and a treading type driving mechanism for controlling the generator to rotate; the lighting lamp is arranged on the inner top surface of the cage carriage body, the generator and the storage battery are arranged on the outer top surface of the cage carriage body, the storage battery is arranged in the storage battery box body, and the treading type driving mechanism is arranged on the inner bottom surface of the cage carriage body and is close to the cage door; the trample type driving mechanism is trampled by mine workers entering the cage body and then drives the generator to rotate, the electric energy generated by the rotation of the engine is stored by the storage battery, and the illuminating lamp is connected with the storage battery; however, the prior art does not describe specific control of the engine;

prior art 4: the Chinese patent with patent publication number CN103241606B proposes a hydraulic-electric hybrid-driven mine hoisting device and a control method thereof, wherein the hoisting device is formed by connecting a hoisting motor with a hydraulic pump/motor I through a clutch, connecting the input end of the hoisting motor with the primary winding of a step-down transformer, connecting the primary winding of the step-down transformer with the output end of a cascade high-voltage frequency converter, connecting the secondary winding with the input end of a low-voltage frequency converter, and connecting the step-up transformer with a high-voltage alternating-current power grid; the control method is that when the hoister and the winch go up, down and brake, part of energy is stored and fed by the energy accumulator to save energy; the prior art control strategy is still relatively complex.

From the above description of the prior art, it will be appreciated by those skilled in the art that the following disadvantages exist with the current existing lift cage control:

(1) the control mode mainly using electric power is still adopted, and the consideration on extreme or severe field working environments such as power failure and the like is not enough;

(2) the control strategy is still more complex and costly.

When other power devices are adopted to lift the cage body, in order to ensure the lifting stability of the cage body, the output speed of the power device needs to be adjusted to ensure that the power device rotates within a certain range; in the prior art, in industries such as mines and the like, no related technical scheme exists, and therefore, a new technical scheme needs to be provided to solve the technical problem.

Disclosure of Invention

The invention provides a control system of a speed changer of a lifting cage, which comprises a cage body, wherein the cage body is connected with a power device, a speed changing device is arranged between the power device and the cage body, the speed changing device comprises a hydraulic device, the hydraulic device is respectively connected with a gear lever and a transmission device, and the transmission device is connected with a transmission driving device.

Preferably, a pressure release device is arranged between the hydraulic device and the gear lever.

Preferably, the hydraulic device comprises an outer opening fixing pipe, a sleeve is arranged on the inner side of the outer opening fixing pipe, a transmission device for controlling the sleeve to move is connected to the outer side of the sleeve, a piston is arranged in the sleeve, and the piston is connected with the gear lever through a piston rod; the outer side of the outer opening fixing pipe is provided with a first sectional type outer sleeve and a second sectional type outer sleeve which are not communicated, one end of the first sectional type outer sleeve is provided with an oil inlet, and one end of the second sectional type outer sleeve is provided with an oil outlet; two groups of ports are formed on the outer port fixing pipe and the sleeve and are used for controlling the piston to move in an oil inlet mode and an oil outlet mode.

As a preferred scheme, the transmission device includes a rack, the rack is fixed in the outer side of the sleeve, the rack is connected with a gear, the gear and the sleeve are connected with the transmission driving device through a stop piece, the transmission driving device includes a slotted arm fixed on a connecting shaft of the gear, the slotted arm is provided with a groove, the groove is provided with a matching device matched with the groove, the matching device is fixed on a cam, and the cam is connected with a belt wheel through a rotating shaft.

As a preferable scheme, the transmission driving device is connected with a power control device, the power control device comprises a spring, the spring is connected with a connecting rod, the connecting rod is pivoted with a lever at a pivot, the lever is hinged with a control rod, and the control rod is connected with the power device.

Preferably, a first control rod is arranged between the piston rod and the gear lever, and the first control rod is a bent rod.

Preferably, the pressure release device comprises a mounting rod, the mounting rod is connected with the gear lever, a waist-shaped groove is formed in the mounting rod, the waist-shaped groove comprises a first convex angle and a second convex angle, and the inside of the waist-shaped groove is connected with the control rod through a rotary connecting part.

Preferably, the pressure release device comprises a mounting rod, the mounting rod is connected with the gear lever, a slot is formed in the mounting rod, a crank is arranged in the slot, and one end of the crank is connected with a screw; and a rotary connecting part is arranged in the slot and is connected with the control rod.

Preferably, the pressure relief device comprises a mounting rod, the mounting rod is connected with the gear lever, a slot is formed in the mounting rod, an adjustable screw is arranged in the slot, a support is arranged at the top of the adjustable screw, and a rotary connecting part is arranged in the slot and connected with the control rod.

Preferably, the pressure release device comprises a fixing part, the fixing part is connected with a mounting rod, the mounting rod is hinged with the control rod, a moving gap is arranged between the mounting rod and the fixing part, and the fixing part is connected with the gear lever.

Preferably, the transmission driving device further comprises a pawl structure, the pawl structure comprises a notch arranged on the cam, the notch is matched with the spring plunger, and the spring plunger is fixed on the fixing frame.

As a preferable scheme, an observation hole is formed in the outer side of the first sectional type outer sleeve, and a detachable sealing plug is arranged in the observation hole.

In conclusion, the invention adopts other power devices besides electric power, so that the dependence on the electric power can be weakened, and the electric vehicle can still normally work in the environment with insufficient electric power; the speed change device can conveniently regulate the speed of the power device, has the advantages of convenient speed regulation, large adjustable range and convenient use, and overcomes the defect of excessive dependence on electric power in the prior art.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a left side elevation sectional view of FIG. 1;

FIG. 4 is a schematic structural view of a pressure relief apparatus of embodiment 2;

FIG. 5 is a schematic structural view of a pressure relief apparatus according to embodiment 3;

FIG. 6 is a schematic structural view of a pressure relief apparatus according to embodiment 4;

FIG. 7 is a schematic structural view of a pressure relief apparatus according to embodiment 5;

FIG. 8 is a schematic view of the construction of the fixing member of the present invention;

reference numerals:

1. the gear lever comprises a gear lever 2, an outer opening fixing pipe 3, a sleeve 4, a piston 5, a piston rod 6, a sealing element 7, a bearing end cover 8, a positioning pin 9, a sealing end cover 10, a sectional type first outer sleeve 11, a sectional type second outer sleeve 12, an oil inlet 13, a sealing plug 14, an oil outlet 15, an oil inlet cavity 16, an oil outlet cavity 17, a first oil inlet 18, a second oil inlet 19, a first oil outlet 20, a second oil outlet 21, a third oil inlet 22, a fourth oil inlet 23, a third oil outlet 24, a fourth oil outlet 25, a bulge 26, a rack 27, a gear 28, a stop 29, a slotted arm 30, a groove 31, a matching device 32, a cam 33, a notch 34, a rotating shaft 35, a belt wheel 36, a spring 37, a fixing frame 38, a connecting, Telescopic main shaft 44, notch 45, spring plunger 46, observation hole 47, detachable sealing plug 48, control rod I49, thread sleeve 50, mounting rod 51, kidney-shaped groove 52, convex angle I53, convex angle II 54, rotary connecting part 55, support 56, slot 57, crank 58, screw 59, mounting seat 60, adjustable screw 61, screw support 62, fixing part 63, moving gap 64, arc-shaped groove 65, plane 66 and boss.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the installation methods, the communication protocols and the technical terms mentioned in the present invention are technical terms that are already clearly known in the technical field, and therefore, the explanation thereof is not repeated. Moreover, the same reference numerals are used for the same components, which do not affect and should not constitute an exact understanding of the technical solutions for a person skilled in the art.

Example 1:

the invention provides a control system of a lifting cage speed changer, which comprises a cage body (not shown in the figure), wherein the cage body is connected with a power device, the power device drives the cage body to perform lifting motion, a speed change device is arranged between the power device and the cage body, and the speed change device is used for controlling the lifting speed of the cage body, so that the cage body is prevented from being too fast or too slow, and the stability of the cage body is improved; wherein the speed changing device comprises a hydraulic device which is respectively connected with the gear lever 1 and a transmission device, and the transmission device is connected with a transmission driving device; the transmission driving device drives the transmission device to move, so that the hydraulic device is driven to work, the gear lever 1 is driven to work, and speed change is realized; it should be noted that, when the present invention is shifting, it needs to cooperate with a clutch (not shown) to work, the clutch is arranged between the power device and the shifting device, only when the clutch cuts off the power transmission between the power device and the shifting device, the shifting lever 1 can work to realize the change of the transmission ratio, the clutch belongs to the prior art, and the principle and the structure of the present invention are not improved, and therefore, the present invention is not described in detail.

Specifically, the hydraulic device comprises an outer opening fixing tube 2, a sleeve 3 is arranged on the inner side of the outer opening fixing tube 2, the sleeve 3 can slide in the outer opening fixing tube 2 and is used as a power cylinder, a transmission device for controlling the sleeve 3 to move is connected to the outer side of the sleeve 3, a piston 4 is arranged in the sleeve 3, the piston 4 slides in the sleeve 3, and the piston 4 is connected with a gear lever 1 through a piston rod 5; in order to ensure better sealing, a sealing element 6 is arranged between the piston rod 5 and the sleeve 2, preferably, a bearing end cover 7 is arranged between the piston rod 5 and the sleeve 3, the bearing end cover 7 is fixed with the outer opening fixing pipe 2 through a positioning pin 8, namely, one end of the outer opening fixing pipe 2 is in a sealing state and can be sealed through a sealing end cover 9 or an integrally formed mode, the other end of the outer opening fixing pipe 2 is connected with a bearing end cover 13 to realize the movement of the piston 3, and the sealing element 6 is arranged between the piston rod 4 and the bearing end cover 7;

the piston rod 5 transmits the movement of the piston 4 to the gear lever 1, and the gear lever 1 is connected with a gear box (not shown) and used for realizing the change of the transmission ratio and achieving the effect of speed change; the gear lever 1 can also adopt other speed change structures for moving gears in a gear box, and the invention is not described in detail herein; the outer side of the outer opening fixing pipe 2 is provided with a first sectional type outer sleeve 10 and a second sectional type outer sleeve 11 which are not communicated, one end of the first sectional type outer sleeve 10 is provided with an oil inlet 12, the other end of the first sectional type outer sleeve 10 is provided with a sealing plug 13, one end of the second sectional type outer sleeve 11 is provided with an oil outlet 14, the other end of the second sectional type outer sleeve 11 is provided with a sealing plug 13, and the sealing plug 13 is arranged to ensure that oil can only enter an oil inlet cavity 15 from the oil inlet 12 and flow out from the oil outlet 14 of an oil outlet cavity 16; the oil inlet 12 is used for being connected with an oil system and introducing oil into the sleeve 3, and the oil outlet 14 is used for releasing the oil in the sleeve 3; two groups of ports are formed on the outer port fixing pipe 2 and the sleeve 3, the ports are used for controlling the piston 4 to move in an oil inlet mode and an oil outlet mode, when one group of ports are aligned, the other group of ports are in a non-aligned state, and only one group of ports can work; specifically, the port comprises a first oil inlet 17, a second oil inlet 18, a first oil outlet 19 and a second oil outlet 20 which are arranged on the outer port fixing pipe 2, and a third oil inlet 21, a fourth oil inlet 22, a third oil outlet 23 and a fourth oil outlet 24 which are arranged on the sleeve 3; the oil inlet I17 is matched with the oil inlet III 21, the oil outlet I19 is matched with the oil outlet III 23, and the oil inlet I17, the oil inlet III 21, the oil outlet I19 and the oil outlet III 23 form a group of ports; the oil inlet II 18 is matched with the oil inlet IV 22, the oil outlet II 20 is matched with the oil outlet IV 24, and the oil inlet II 18, the oil inlet IV 22, the oil outlet II 20 and the oil outlet IV 24 form another group of ports; one group of ports of the oil inlet I17, the oil inlet III 21, the oil outlet I19 and the oil outlet III 23 is used for controlling the piston 4 to move towards the right side, and the other group of ports of the oil inlet II 18, the oil inlet IV 22, the oil outlet II 20 and the oil outlet IV 24 is used for controlling the piston 4 to move towards the left side, namely the two groups of ports are used for controlling the piston 4 to perform the same function towards opposite directions; when the sleeve 3 moves to enable one of the two groups of ports to be aligned, if the piston 4 is controlled to move to the right side, the sleeve 3 is moved to enable the first oil inlet 17 to be aligned with the third oil inlet 21 and the first oil outlet 19 and the third oil outlet 23 to be aligned, so that oil enters the sleeve 3 through the first oil inlet 17 and the third oil inlet 21, the piston 4 is pushed to move to the right side, and the reverse movement of the piston 4 is achieved in the same way; when the oil pump works specifically, the oil inlets and the oil outlets of the two groups of ports are aligned selectively, when one group of ports is aligned, the other group of ports is in a non-aligned state, oil cannot flow in through the oil inlets of the other group, and the oil outlets flow out; as a preferred scheme, in order to improve the working efficiency, the number of the oil inlets and the oil outlets can be multiple, and the oil inlets and the oil outlets are not limited to one group, and workers can select the oil inlets and the oil outlets according to specific conditions; more preferably, a protrusion 25 is arranged in a gap between the outer side of the outer mouth fixing tube 2 and the first sectional outer sleeve 10 and the second sectional outer sleeve 11 for limiting circumferential rotation of the outer mouth fixing tube 2, and the protrusion 25 may be integrally formed with the outer mouth fixing tube 2 or may be connected by welding or the like.

Specifically, the transmission device includes a rack 26, the rack 26 is fixed on the outer side of the sleeve 3, the rack 25 is connected with a gear 27, the gear 27 and the sleeve 3 are connected with the transmission driving device through a stopper 28, the transmission driving device includes a slotted arm 29 fixed on a connecting shaft of the gear 27, the slotted arm 29 can rotate a certain angle, a slot 30 is provided on the slotted arm 29, a matching device 31 matched with the slot 30 is provided in the slot 30, preferably, the matching device 31 adopts a structure such as a protrusion or a stud, the matching device 31 is fixed on the cam 32, a notch 33 for limiting angular displacement of the cam 32 is provided on the cam 32, more specifically, the transmission driving device further includes a base (not shown in the figure), the notch 33 is in contact with the base to limit angular displacement of the cam 32, so that the rotational angle of the cam 32 is kept at about 90 degrees, in accordance with the angle of movement of the slotted arm 29; the cam 32 is connected with the belt wheel 35 through the rotating shaft 34, the belt wheel 35 provides rotating power for the cam 32, and the belt wheel 35 can be replaced by a chain and a chain wheel or other simple and convenient methods, which is not described in detail herein; the angular displacement of the slotted arm 29 during the movement from one extreme position to the other (about 90 °) uses only a portion of the periphery of the cam 32 shaped so that during such angular displacement of the slotted arm 32, the control mechanism or mechanisms are or will be in a position that produces a low rotational speed when the slotted arm 29 is rotated clockwise; at the moment, the gear 35 drives the rack 26 to move, so that the sleeve 3 is driven to move, oil enters the sleeve 3 through the first oil inlet 17 and the third oil inlet 21, the piston 4 is driven to move rightwards, the gear lever 1 is driven to engage with a high transmission ratio, and the lifting speed of the cage body is increased; conversely, the counterclockwise rotation of the slotted arm 29 reduces the lifting speed of the cage.

As a preferable scheme, the transmission driving device is connected with a power control device, and the power control device is used for controlling the rotating speed of the power device; the power control device comprises a spring 36, the spring 36 is fixed in a fixed frame 37, particularly fixed on the outer sides of the first sectional type shell 10 and the second sectional type shell 11, and can be fixedly connected in a welding mode, a buckling mode and the like; the fixing frame 37 is also fixed at the outer side of the first sectional shell 10 and the second sectional shell 11 and can be fixedly connected by welding and the like; the other end of the spring 36 is connected with a connecting rod 38, the connecting rod 38 is pivoted with a lever 39 at a pivot 40, the connecting rod 38 rotating along the pivot 40 is pressed on the periphery of the cam 32 by the spring 36, so that the cam 32 rotates in one direction to move the lever 39 to increase the rotating speed of a power device (such as an internal combustion engine) and rotates in the opposite direction to reduce the rotating speed of the power device; the lever 39 is hinged with a control rod 41 at a hinge point 42, and the control rod 41 is connected with a power device; specifically, the control lever 41 is connected to a throttle (not shown in the drawings) for controlling the opening and closing of the throttle, thereby controlling the rotational speed of a power plant such as an internal combustion engine; the lever 39, whose hinge point 42 of the control rod 41 is operated by the cam 32, will rise or fall slightly during its movement according to the desired engagement, more preferably, a telescopic spindle 43 is provided on said lever 39, the control rod 41 being arranged at a suitable height of the telescopic spindle 43 to compensate for the angular movement; the angular displacement of the slotted arm 29 during the movement from one extreme position to the other (about 90 °) uses only a portion of the periphery of the cam shaped so that during such angular displacement of the slotted arm 29, the control mechanism or mechanisms are or will be in a position that produces a low rotational speed; outside said region, the cam 32 has a profile suitable for progressive movement so that, by suitable contact with the connecting rod 38, the lever 39 will rise slightly during its movement, according to the desired engagement, making the opening of the throttle valve greater, thus increasing the speed of the power plant (for example, an internal combustion engine).

Preferably, the transmission drive further comprises a pawl structure comprising notches 44 provided on the cam 32, preferably the number of notches 44 is 2; the notch 44 cooperates with a spring plunger 45, the spring plunger 45 being fixed to the fixed frame 37; the fixing frame 37 is fixed on the outer sides of the first sectional type outer sleeve 10 and the second sectional type outer sleeve 11 and can be connected in a welding mode and the like; the pawl structure is used for limiting the cam 32, and prevents the cam 32 from continuously generating displacement due to the rotating force of the gear 27 when the belt wheel 35 stops moving, so that the smooth operation is influenced.

As a preferable scheme, the outer side of the first split type outer sleeve 10 is provided with an observation hole 46, and a detachable sealing plug 47 is arranged in the observation hole 46; the provision of the inspection holes 46 serves to enable, after the assembly of the parts, to check whether the passage of the outer tube fixing tube 2 is correctly aligned with the ports in the sleeve 3, the inspection holes 46 being circumferentially and axially aligned by means of the rack 25 and the gear 27, and to specify, during assembly, the correct circumferential position of the sleeve 3 with respect to the outer tube fixing tube 2 by means of the positioning pins 8 abutting on the bearing end caps 7, the oil inlet of the sleeve 3 being in line with the oil inlet in the outer tube fixing tube 2, half of the oil inlet and outlet of the sleeve 3 being closed with respect to the outer tube fixing tube 2 when the sleeve 3 is moved to one of its two end positions, while the oil inlet and outlet at the other end are open with respect to the outer tube fixing tube 2 to allow the admission of pressure fluid and to drive the piston.

Example 2:

the difference between the embodiment and the embodiment 1 is that the embodiment comprises a pressure release device, when the speed of the cage body is adjusted, because the clutch is frequently used, the ball of the clutch bears large pressure, the clutch is easy to wear, the service life of the clutch is reduced, and therefore the pressure of the ball of the clutch needs to be released; specifically, a first control rod 48 is arranged between the piston rod 5 and the shift lever 1, the first control rod 48 is a bent rod, the piston rod 5 and the first control rod 48 are connected through threads, a threaded sleeve 49 can be arranged on the outer sides of the piston rod 5 and the first control rod 48, an internal thread is arranged in the threaded sleeve 49, and an external thread is arranged on the outer sides of the piston rod 5 and the first control rod 48 for threaded matching; the piston rod 5 can be provided with a hole with an internal thread, the control rod 48 is provided with an external thread matched with the internal thread hole, or the control rod 48 is provided with a hole with an internal thread, the piston rod 5 is provided with an external thread matched with the internal thread hole, and a technician can select the hole according to specific conditions, so that the length of the control rod 48 can be adjusted, the speed regulation work can be better finished, the method is also suitable for different power devices, and the universality of the method is enhanced; more preferably, the first control rod 48 is a telescopic rod, and the length can be further adjusted; a pressure release device is arranged between the hydraulic device and the gear lever 1, specifically, the pressure release device is arranged between the control rod I48 and the gear lever 1, the pressure release device comprises a mounting rod 50, the mounting rod 50 is connected with the gear lever 1, a waist-shaped groove 51 is arranged on the mounting rod 50, the waist-shaped groove 51 comprises a first salient angle 52 and a second salient angle 53, and the inside of the waist-shaped groove 51 is connected with the control rod I48 through a rotary connecting component 54 (such as a pin, a roller and the like); the mounting rod 50 can adopt structures such as a floating connecting rod, a lever and the like; the pressure release device is used for releasing the pressure generated on the clutch ball, specifically releasing the pressure, when the piston 4 applies a pulling force to move the gear lever 1 from back to front, in the two lobes of the starting position (right side in fig. 4), the seat 55 between the first lobe 52 and the second lobe 53 is cut at right angle with respect to the middle position and is inclined in an opposite manner in the front position of the gear lever 1, as shown in the left side in the figure; when the cage is lifted, the upshift clutch is fully engaged, and the shift lever 1 cannot move any further in the same direction, the piston rod 5 and the rotating link member 54 continue to travel a short distance sufficient for the rotating link member 54 to tilt and slide along lobe one 52, lobe two 53 as shown by the dashed lines in fig. 4; after the piston rod 5 completes the stroke, the mounting rod 50 generates an inclined plane effect by rotating the connecting part 54 when the rotating connecting part 54 descends to the second convex corner 53 of the kidney-shaped groove 51, and the retreating motion is enough to release the pressure of the balls on the clutch; such pressure relief is not required when the cage is lowered.

Example 3:

the present embodiment is different from embodiment 2 in that the pressure release device has a different structure, specifically, the pressure release device includes a mounting rod 50, the mounting rod 50 is connected to the shift lever 1, a slot 56 is formed on the mounting rod 50, a crank 57 is disposed in the slot 56, and one end of the crank 57 is connected to a screw 58; the slot 56 is provided with a rotating connecting part 54 which is connected with the first control rod 48; the mounting rod 50 adopts a structure of a floating connecting rod or a lever and the like, and the bottom of the slot 5 is provided with a rotatable crank 57; the lower part of the mounting rod 50 is provided with a mounting seat 59, a threaded hole is formed in the mounting seat 59, a screw 58 matched with the threaded hole is arranged in the threaded hole, one end of the screw 58 is in contact with the crank 57 and can be used for adjusting the crank 57 to release pressure; when the piston rod 5 moves rightwards, because the first control rod 48 is a bent rod, the rotating connecting part 54 pushes the crank 57 to rotate, so that the piston rod 5 and the rotating connecting part 54 continue to travel for a short distance, when the piston rod 5 moves leftwards, the crank 57 does not rotate, and the rotating connecting part 54 moves along the outer contour of the crank 57, so that the pressure of the clutch balls is released.

Example 4

The present embodiment is different from embodiment 3 in that the structure of the pressure relief device is different, specifically, the pressure relief device includes a mounting rod 50, the mounting rod 50 is connected to the gear lever 1, a slot 56 is formed on the mounting rod 50, an adjustable screw 60 is arranged in the slot 56, a screw support 61 is arranged on a top portion 60 of the adjustable screw, the slot 56 is provided with a rotary connecting part 54, and the rotary connecting part 54 is connected to the first control rod 48; the mounting rod 50 adopts a structure such as a floating connecting rod or a lever, a mounting seat 59 is arranged at the lower part of the mounting rod 50, a threaded hole is formed in the mounting seat 59, an adjustable screw 60 matched with the threaded hole is arranged in the threaded hole, a screw support 61 is fixed at the top of the adjustable screw 60 and is fixed in a welding mode and the like, the screw support 61 extends into the slot 56, and the length of the screw is adjusted according to the pressure by the adjustable screw 61; when the piston rod 5 moves rightwards, because the first control rod 48 is a bent rod, the rotary connecting part 54 moves along the outer contour of the screw support 61, and the piston rod 5 and the rotary connecting part 54 continue to move; when the piston rod 5 moves to the left, the rotary connecting part 54 moves along the outer contour of the screw seat 61, and the release of the clutch ball pressure is realized.

Example 5

This embodiment differs from embodiment 4 in that the pressure relief device has a different structure, specifically, the pressure relief device includes a fixing member 62, the fixing member 62 is connected to a mounting rod 50, the mounting rod 50 is hinged to a control rod 48, a moving gap 63 is provided between the mounting rod 50 and the fixing member 62, and the fixing member 62 is connected to the shift lever 1; the mounting rod 50 adopts a structure of a floating connecting rod or a lever and the like, the fixing piece 62 comprises an arc-shaped groove 64, the arc-shaped groove 64 is connected with a plane 65, the mounting rod 50 is arranged in the arc-shaped groove 64 in a matched mode, the mounting rod 50 comprises a protruding part 66, and a moving gap 63 is arranged between the protruding part 66 and the plane 65 and used for realizing movement, so that pressure is released; in a specific working process, when the piston rod 5 moves rightwards, because the first control rod 48 is a bent rod and is hinged with the mounting rod 50, the mounting rod 50 rotates to enable the piston rod 5 to continue to move, and the plane 65 achieves the limiting effect; when the piston rod 5 moves to the left, the boss 66 separates from the flat 65, and the mounting rod 50 is reset, thereby releasing the clutch ball pressure.

The working process of the invention is as follows: when the speed of the transmission output is too fast or too slow, the clutch (not shown) is depressed, and the pulley 35 is actuated to adjust the speed of the transmission output; when the speed of the output end is lower than the preset lowest speed, the belt wheel 35 drives the cam 32 to rotate clockwise, when the matching device 31 is meshed with the groove 30, the grooved arm 29 is driven to rotate, so that the gear 27 is driven to rotate, the gear 27 drives the rack 26 to move, the sleeve 3 is driven to move, oil enters the sleeve 3 through the first oil inlet 17 and the third oil inlet 21, the piston 4 is driven to move rightwards, so that the gear lever 1 is driven to mesh with a high transmission ratio, and the lifting speed of the cage body is accelerated; at this time, when the cam 32 rotates clockwise, the cam contacts the connecting rod 38 to push the connecting rod 38 to move to the right side, so as to drive the control rod 41 to move upwards, increase the throttle valve, increase the air volume entering the power device, and match the oil inlet volume, so as to improve the rotating speed of the power device; when the speed of the output end is higher than the preset highest speed, the belt wheel 35 drives the cam 32 to rotate anticlockwise to drive the grooving arm 29 to rotate in a return mode, so that the gear 27 is driven to rotate, the gear 27 drives the rack 26 to move to drive the sleeve 3 to move, oil in the sleeve 3 flows out through the oil outlet II 20 and the oil outlet IV 24 and enters the sleeve 3 through the oil inlet II 18 and the oil inlet IV 22, the piston 4 is driven to move leftwards, so that the gear lever 1 is driven to engage with a low transmission ratio, and the lifting speed of the cage body is reduced; at this time, when the cam 32 rotates counterclockwise, the connecting rod 38 moves to the left to drive the control rod 41 to move downward, so as to reduce the opening of the throttle valve, reduce the air amount entering the power device, and reduce the rotating speed of the power device by matching with the oil inlet amount; in the present invention, the notches 33 of the cam 32 are in contact with the abutment to limit the angular displacement of the cam 32, so that the angle of rotation of the cam 32 is maintained at about 90 degrees, in correspondence with the angle of movement of the slotted arm 29, the angular displacement of the slotted arm 29 during its movement from one extreme position to the other (about 90 °) using only a portion of the periphery of the cam 32; the pressure release device is used for releasing pressure generated on the clutch ball, and the service life of the clutch is prolonged.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any minor modifications, equivalent replacements and improvements made to the above embodiment according to the technical spirit of the present invention should be included in the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a promote cage variable speed motor control system, includes the cage body, its characterized in that, the cage body is connected with power device, be equipped with speed change gear between power device and the cage body, wherein, speed change gear includes hydraulic means, hydraulic means is connected with gear lever (1), transmission respectively, transmission is connected with transmission drive arrangement.

2. A lift cage transmission control system as claimed in claim 1 wherein a pressure relief device is provided between the hydraulic device and the gear lever (1).

3. A lift cage transmission control system according to claim 1 or 2, characterized in that the hydraulic means comprises an outer mouth fixing tube (2), a sleeve (3) is arranged inside the outer mouth fixing tube (2), a transmission device for controlling the sleeve (3) to move is connected to the outside of the sleeve (3), a piston (4) is arranged in the sleeve (3), and the piston (4) is connected with the gear lever (1) through a piston rod (5); the outer side of the outer opening fixing pipe (2) is provided with a first sectional type outer sleeve (10) and a second sectional type outer sleeve (11) which are not communicated, one end of the first sectional type outer sleeve (10) is provided with an oil inlet (12), and one end of the second sectional type outer sleeve (11) is provided with an oil outlet (14); two groups of ports are formed on the outer opening fixing pipe (2) and the sleeve (3), and the ports are used for controlling the piston (4) to move in an oil inlet and an oil outlet mode.

4. A lift cage variator control system as claimed in claim 3 wherein the transmission comprises a rack (26), the rack (26) being fixed to the outside of the sleeve (2), the rack (26) being connected to a gear (27), the sleeve (2) being connected to a transmission drive via a stop (28), the transmission drive comprising a slotted arm (29) fixed to a connecting shaft of the gear (27), the slotted arm (29) being provided with a slot (30), the slot (30) being provided with an engagement means (31) cooperating therewith, the engagement means (31) being fixed to a cam (32), the cam (32) being connected to a pulley (35) via a rotating shaft (34).

5. A lift cage variator control system as claimed in claim 4 wherein the transmission drive is connected to a power control means, the power control means comprising a spring (36), the spring (36) being connected to a link (38), the link (38) being pivotally connected to a lever (39) at a pivot (40), the lever (39) being pivotally connected to a lever (41), the lever (41) being connected to the power means.

6. A lift cage transmission control system as claimed in claim 5, wherein a first control rod (48) is provided between the piston rod (5) and the gear lever (1), said first control rod (48) being a bent rod.

7. A lift cage transmission control system as claimed in claim 6 wherein said pressure relief means comprises a mounting bar (50), said mounting bar (50) being connected to the gear lever (1), said mounting bar (50) being provided with a waist-shaped groove (51), said waist-shaped groove (51) comprising a first lobe (52) and a second lobe (53), said waist-shaped groove (51) being connected to the first control bar (48) by a rotating connecting member (54).

8. A lift cage variator control system as claimed in claim 7, the transmission drive further comprising a detent arrangement comprising a recess (44) provided on the cam (32), the recess (44) cooperating with a spring plunger (45), the spring plunger (45) being fixed to the fixed frame (37).

9. A lift cage transmission control system as claimed in claim 4, wherein the outer side of the segmented outer jacket one (10) is provided with a viewing aperture (46), and a removable sealing plug (47) is provided in the viewing aperture (46).

10. A lift cage transmission control system as claimed in claim 8 wherein the outer side of the segmented outer jacket one (10) is provided with a sight hole (46) and a removable sealing plug (47) is provided in the sight hole (46).