CN210029648U - Novel double-screw elevator - Google Patents

Abstract

The utility model discloses a novel double-screw elevator belongs to elevator equipment technical field. The novel double-screw elevator comprises a self-balancing adjusting frame, a double-screw transmission system arranged at the top of the self-balancing adjusting frame and a counterweight mechanism used for balancing the weight of a lift car and reducing torque; the car top is provided with the elevator structure of saving oneself, the elevator structure of saving oneself is including driving subassembly and closure subassembly certainly. The utility model discloses a thereby the twin-screw rotates to make the nut drive the car and moves from top to bottom, has solved current screw elevator because the cantilever structure that the single screw rod formed, the poor problem of security, and when the elevator trouble, the usable structure of saving oneself of passenger escapes.

Description

Novel double-screw elevator

Technical Field

The utility model relates to an elevator equipment technical field especially indicates a novel double screw elevator.

Background

The existing screw elevator adopts a motor as a power source, and the motor drives a nut or a screw to rotate through a speed reducer (or a belt), so that the nut drives an L-shaped lifting platform to ascend or descend. The power transmission mode is mainly divided into the following two types:

screw rod rotary type screw elevator: the motor drives the screw rod to rotate, and drives the nut and the L-shaped lifting platform connected with the nut to move. The lifting platform is characterized in that the main machine is separated from the lifting platform, the noise is low, the screw rod is short, and the operation is stable; the existing screw rotary screw elevator can only achieve 2 layers because the screws of the existing screw rotary screw elevator can not be connected.

Nut rotary type screw elevator: the motor drives the nut to rotate, and the L-shaped lifting platform is driven to move up and down along the screw rod. The motor is fixed on the L-shaped lifting platform. The device is characterized in that the motor is connected with the lifting platform, so that the noise is high; with the increase of the height of the screw, the tremble can be increased, the running stability is poor, and the safety is not felt.

In a word, the existing screw elevator adopts a single-screw driving mode, because the L-shaped lifting platform is only connected with the driving nut on the screw in a single side and is in a cantilever structure, when a person stands at a position far away from the driving screw nut, the corner joint of the L-shaped lifting platform is under the action of lever force, and the stress can be increased in a multiple way. Once the strength exceeds the joint strength of the joint, the lifting platform can fall, and safety accidents are caused. And the rotary screw elevator can only achieve two layers because the screw rods of the rotary screw elevator can not be connected. The nut rotary type screw elevator motor is connected with the lifting platform, and the noise is large.

And because the elevator is used in an overrun way, the maintenance is not good, the quality of the elevator is not good, or the elevator is influenced by the internal and external environments, great potential safety hazards are brought to the elevator. Sudden stopping of the elevator causes people to be trapped in the elevator, so that the people cannot be timely treated, and personal safety of passengers is seriously affected. The conventional self-rescue system is complex in operation, poor in timeliness and low in reliability.

SUMMERY OF THE UTILITY MODEL

For solving not enough among the prior art, the utility model provides a novel double screw elevator, the utility model discloses a thereby the double screw rotates to make the nut drive the car and moves from top to bottom, has solved current screw elevator because the cantilever structure of single screw rod formation, the poor problem of security, and when the elevator trouble, the usable structure of saving oneself of passenger escapes.

In order to solve the technical problem, the utility model provides a technical scheme as follows:

the utility model provides a novel double-screw elevator, which comprises a self-balancing adjusting frame, a double-screw transmission system arranged at the top of the self-balancing adjusting frame, and a counterweight mechanism used for balancing the weight of a lift car and reducing the moment;

the double-screw transmission system comprises a motor and two screw driving components;

the screw driving components comprise screw components, driving nuts sleeved on the screw components and a transmission mechanism, the two screw driving components are respectively arranged on two sides of the lift car, and the driving nuts are respectively arranged on the lift car;

the motor is in transmission connection with the screw driving component through the transmission mechanism so as to synchronously drive the driving nut to move along the corresponding screw component;

the top of the lift car is provided with an elevator self-rescue structure, and the elevator self-rescue structure comprises a self-driving assembly and a locking assembly;

the self-driving assembly comprises a safety nut, a nut driving mechanism in transmission connection with the safety nut and a self-driving operation part arranged in the lift car;

the safety nut is sleeved on the screw rod assembly and can be rotatably arranged on the lift car; the self-driving operation part is connected to the nut driving mechanism so as to drive the safety nut to rotate around the screw rod assembly through the nut driving mechanism;

the locking assembly comprises two locking mechanisms, a locking driving mechanism for driving the locking mechanisms to unlock and an unlocking operation part arranged in the car;

the driving nut is connected to the car through the locking mechanism; the unlocking operation part is connected to the locking driving mechanism so as to drive the locking mechanism to unlock through the locking driving mechanism.

Furthermore, the locking mechanism comprises a bearing seat which is pivoted, a bearing block which protrudes towards the direction corresponding to the driving nut is arranged at the upper end of the bearing seat, so that a clamping hook structure is formed, and a clamping groove part is also arranged on the driving nut corresponding to the bearing block;

the lock catch driving mechanism is arranged between the two lock catch mechanisms and comprises a disengaging wheel, two pull rods and a rotating pressure rod;

the disengaging wheel can be rotatably installed on the car, one end of each of the two pull rods is eccentrically pivoted to the disengaging wheel, the other end of each of the two pull rods is respectively pivoted to the two clamping hook structures, and the rotating pressing rod is connected to the disengaging wheel to drive the disengaging wheel to rotate.

Furthermore, the unblock operation portion includes a small pulley and one connect in throw off the handle on the small pulley, it locates to throw off the handle in the car, the winding has the stay cord on the small pulley, the other end of stay cord passes through loose pulley assembly direction and is connected to rotate on the depression bar.

Furthermore, a bracket is further arranged at a position, corresponding to the safety nut, on the car, the safety nut is arranged below the bracket, and an end face bearing is further arranged between the safety nut and the bracket; the end face bearing is sleeved on the screw rod assembly;

the nut driving mechanism is a first main shaft, and the self-driving operation part is a lifting handle which is pivoted; and two ends of the main shaft are respectively in transmission connection with the lifting handle and the safety nut through bevel gear sets.

Furthermore, the double-screw transmission system comprises a second main shaft and two commutators, the motor is in transmission connection with the second main shaft, the two commutators are respectively arranged at two ends of the main shaft, the two commutators are respectively in transmission connection with the two screw driving assemblies, and the screw assemblies can be rotatably arranged on the self-balancing adjusting frame; the motor is in transmission connection with the two screw assemblies through the transmission mechanism respectively.

Furthermore, the screw assembly comprises a plurality of hollow upper screws, lower screws and screw connecting structures which need to be connected, and the outer diameters of the upper screws and the lower screws are the same; the screw rod connecting structure comprises a hollow guide sleeve in threaded connection with the inner surface of the lower screw rod, and a bolt connecting rod penetrating through the guide sleeve, wherein the lower end of the bolt connecting rod is in threaded connection with the inner surface of the lower screw rod; and a pressing structure is arranged at the upper end of the bolt connecting rod and used for pressing the guide sleeve.

Further, the screw rod connecting structure also comprises a transmission component for transmitting torque generated by the shaking of the screw rod; the compression structure comprises a compression ring and a compression cap, the compression ring is of a hollow structure, the outer surface of the compression ring is provided with threads, and the compression ring is fixedly connected with the threads on the inner surface of the upper screw rod; the pressing cap is arranged at the top of the pressing ring, and the pressing cap is in threaded connection with the upper end of the bolt connecting rod and tightly presses the pressing ring.

Furthermore, the self-balancing adjusting frame comprises a self-balancing adjusting structure and a plurality of supporting rods fixedly arranged on the self-balancing adjusting structure, reinforcing section bars are sleeved on the supporting rods, grooves are formed in two ends of each reinforcing section bar, panels are fixedly arranged in the grooves, and the panels are arranged between the two reinforcing section bars;

the top of the supporting rod is sleeved with a top plate, and a fixing nut is arranged at the top of the supporting rod;

the self-balancing adjusting structure comprises a bottom frame and leveling bolts arranged at four corners of the bottom frame, and the leveling bolts are in threaded connection with the bottom frame; the bottom of the leveling bolt is a curved spherical surface, and a gasket is arranged at the contact part of the leveling bolt and the ground; the top of the gasket is provided with a groove, and the curved spherical surface at the bottom of the leveling bolt is placed in the groove; and an expansion bolt is further arranged on the bottom frame, penetrates through the bottom frame and fixes the bottom frame on the ground.

Furthermore, the driving nut comprises an inner spline in threaded connection with the screw assembly, an outer spline is sleeved outside the inner spline, and a gap is formed between the inner spline and the outer spline;

the upper part of the external spline is in threaded connection with a base plate, the base plate is sleeved on the screw rod assembly, the inner surface of the base plate is in close contact with the screw rod assembly, and the base plate is positioned above the internal spline;

the screw rod assembly is characterized in that the bottom end of the external spline is fixedly connected with a cover plate through a bolt, the cover plate is sleeved on the screw rod assembly, the inner surface of the cover plate is in close contact with the screw rod assembly, and the cover plate is located below the internal spline.

Preferably, balls are arranged between the base plate and the inner spline and between the inner spline and the cover plate, the base plate presses the balls on the upper surface of the outer spline, and the cover plate presses the balls on the lower surface of the outer spline.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses a thereby twin-screw rotates and makes the nut drive the car and move from top to bottom, and the atress is even, and the security is high. The double-screw transmission system is arranged at the top of the self-balancing adjusting frame, is far away from the lift car and is isolated by the lift car wall, and the noise is lower. Be provided with the elevator structure of saving oneself on the car, when taking place the elevator trouble, the passenger can flee from by oneself, and is safe convenient. The unique screw connecting structure is adopted, so that the screws can be connected, and the height of the elevator can reach more than three layers. Adopt unique self-balancing adjustment frame to solve current screw elevator and need destroy the wall toward wall fixed expansion bolts, if all around do not have the condition that the spacious region of wall then can't install. And the device also has the characteristics of high space utilization rate and small occupied space.

Drawings

Fig. 1 is a schematic structural view of the novel double-screw elevator of the utility model;

FIG. 2 is a schematic structural view of the self-rescue structure of the present invention;

FIG. 3 is an enlarged partial front view of FIG. 1;

FIG. 4 is an enlarged, fragmentary, elevational view of another area of FIG. 1;

FIG. 5 is an enlarged view of a portion A of FIG. 4;

FIG. 6 is a schematic structural view of the twin-screw transmission system of the present invention;

FIG. 7 is a partial cross-sectional view taken in the direction A-A of FIG. 6;

FIG. 8 is a top view of FIG. 6;

FIG. 9 is a schematic view of another front view of the twin-screw transmission system of the present invention;

fig. 10 is a schematic structural view of a screw assembly in the utility model;

FIG. 11 is a sectional view taken along line A-A of FIG. 10;

fig. 12 is a schematic view of a screw assembly according to an embodiment of the present invention;

fig. 13 is a schematic structural view of a screw assembly according to another embodiment of the present invention;

fig. 14 is a half sectional view of the roller guide elevator of the present invention;

FIG. 15 is a transverse cross-sectional view of FIG. 14;

FIG. 16 is an enlarged view of a portion of FIG. 15 at B;

fig. 17 is a schematic structural view of the driving nut of the present invention;

fig. 18 is a schematic sectional view of a-a in fig. 17.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.

The utility model provides a novel double-screw elevator, which is shown in the figure 1-18 and comprises a self-balancing adjusting frame, a double-screw transmission system 3 arranged at the top of the self-balancing adjusting frame and a counterweight mechanism 9 used for balancing the weight of a lift car and reducing the moment;

the double-screw transmission system 3 comprises a motor 10 and two screw driving components;

the screw driving components comprise screw components 11, driving nuts 12 sleeved on the screw components 11 and a transmission mechanism, the two screw driving components are respectively arranged on two sides of the car 4, and the driving nuts 12 are respectively arranged on the car 4;

the motor 10 is in transmission connection with the screw driving components through a transmission mechanism so as to synchronously drive the driving nuts 12 to move along the corresponding screw components 11;

the top of the car 4 is provided with an elevator self-rescue structure 5, and the elevator self-rescue structure 5 comprises a self-driving assembly and a locking assembly;

the self-driving component comprises a safety nut 13, a nut driving mechanism in transmission connection with the safety nut 13 and a self-driving operation part arranged in the car 4;

the safety nut 13 is sleeved on the screw assembly 11 and can be rotatably arranged on the car 4; the self-driving operation part is connected to the nut driving mechanism so as to drive the safety nut 4 to rotate around the screw rod assembly 11 through the nut driving mechanism;

the locking component comprises two locking mechanisms, a locking driving mechanism for driving the locking mechanisms to unlock and an unlocking operation part arranged in the cage 4

The driving nut 12 is connected to the car 4 through a locking mechanism; the unlocking operation part is connected to the locking driving mechanism so as to drive the locking mechanism to unlock through the locking driving mechanism.

The utility model discloses a thereby twin-screw rotates and makes the nut drive the car and move from top to bottom, and the atress is even, and the security is high. The double-screw transmission system is arranged at the top of the self-balancing adjusting frame, is far away from the lift car and is isolated by the lift car wall, and the noise is lower. Be provided with the elevator structure of saving oneself on the car, when taking place the elevator trouble, the passenger can flee from by oneself, and is safe convenient. The unique screw connecting structure is adopted, so that the screws can be connected, and the height of the elevator can reach more than three layers. Adopt unique self-balancing adjustment frame to solve current screw elevator and need destroy the wall toward wall fixed expansion bolts, if all around do not have the condition that the spacious region of wall then can't install. And the device also has the characteristics of high space utilization rate and small occupied space.

In an embodiment of the present invention, see fig. 2-5, the car 4 includes a car roof 14 and a car floor 31 disposed up and down, four car pillars 22 are respectively connected to the car roof 14 at the upper end and the car floor 31 at the lower end to form a rectangular frame structure, and two driving nuts 12 are respectively disposed at two opposite sides of the car roof 14.

The car 4 is also provided with a self-driving component and a locking component: in this embodiment, the locking assembly includes two locking mechanisms, a locking driving mechanism for driving the locking mechanisms to unlock, and an unlocking operation portion disposed in the car.

Two these latched devices all locate on this car roof 14, and locate the position that two relative both sides on this car roof 14 upper portion correspond two drive nuts 12 to fixed drive nut 12 that correspond is locked respectively:

the locking mechanism comprises a bearing seat 32 which is pivoted and installed, the bottom end of the bearing seat 32 is pivoted and installed on a car roof 14, the upper end of the bearing seat is provided with a bearing block 33 which protrudes towards the direction corresponding to the driving nut 12, so that a 7-shaped clamping hook structure is formed, a clamping groove part is further arranged on the driving nut 12 corresponding to the bearing block, the bearing block 33 is pressed on the end surface of the clamping groove part on the driving nut 12, the clamping groove part is an inclined surface which inclines outwards and downwards, self-locking is realized, and the two driving nuts 12 are connected to the car through corresponding locking mechanisms.

Since there are two latching mechanisms and one latching driving mechanism, in this embodiment, the latching driving mechanisms are respectively connected to two latching mechanisms:

the locking driving mechanism is arranged between the two locking mechanisms and comprises a disengaging wheel 15, a first pull rod 34, a second pull rod 35 and a rotating compression rod 36; the disengaging wheel 15 and the rotating pressure rod 36 are arranged on a rotating rod 37, and the rotating rod 37 is arranged on a rotating rod seat 16, so that the disengaging wheel 15 and the rotating pressure rod 36 can be rotatably arranged on the car; the first pull rod 34 and the second pull rod 35 are both eccentrically pivoted at one end to the disengaging wheel 15, and then the other ends are respectively pivoted at the upper ends of the bearing seats 32 of the two hook structures, and the disengaging wheel 15 is rotated, so that the bearing seats 32 can swing around the pivoting shaft in a direction deviating from the direction of the driving nut 12, and the driving nut 12 is unlocked and disengaged from the car.

The unlocking operation part is connected to the lock catch driving mechanism to drive the lock catch mechanism to unlock through the lock catch driving mechanism:

the unlocking operation part comprises a small pulley 18 and a disengagement handle 19 connected to the small pulley 18, the small pulley 18 is rotatably mounted on the frame structure of the cage through a small pulley main shaft 20 and a small pulley bracket 17 for mounting the small pulley main shaft 20, and the disengagement handle 19 is arranged in the cage;

a steel wire rope 38 is wound on the small pulley 18 as a pull rope, and the other end of the steel wire rope 38 is guided by a pulley assembly and connected to the rotating pressure lever 36, specifically: the pulley assembly comprises a first pulley block 39 and a second pulley block 40 which are arranged on the car roof 14, one end of a steel wire rope 38 is fixed on the rotating compression bar 36, and then the steel wire rope passes through the first pulley block 39 and the second pulley block 40, and then the other end of the steel wire rope is fixed on a pulley groove of the small pulley 18, so that the disengaging handle 19 drives the rotating compression bar 36 to swing, the disengaging wheel 15 is driven to rotate, and the two locking mechanisms are unlocked.

This from driving the subassembly includes safety nut 13, with the nut actuating mechanism that this safety nut 13 transmission is connected and locate the operation portion of driving certainly in this car:

in this embodiment, only one safety nut 13 is provided, which is sleeved on one screw assembly 11 and can be rotatably mounted on the car, specifically: the car is provided with a bracket 23, the bracket 23 is a rectangular frame connected below the car roof 14, and the bottom of the bracket 23 is connected to the car upright post 22 through a cross rod 21; then, a face bearing 24 is also sleeved on the screw assembly 11; the bracket 23 is disposed on the car at a position corresponding to the safety nut 13, the safety nut 13 is disposed below the bracket 23, and the end face bearing 24 is disposed between the safety nut 13 and the bracket 23 to press and support the upper end of the safety nut 13.

The self-driving operation part is connected to the nut driving mechanism to be driven by the nut driving mechanism.

In this embodiment, the nut driving mechanism is a main shaft 27, and the self-driving operation part is a lifting handle 30 pivotally mounted on the car; a third straight bevel gear 29 is arranged on a rotating shaft of the lifting handle 30, end face straight bevel gears are arranged on the lower end face of the safety nut 13, a first straight bevel gear 26 meshed with the upper bevel gear of the safety nut 13 and a second straight bevel gear 28 meshed with the third straight bevel gear 29 are respectively arranged at two ends of the main shaft 27, and then the lifting handle 30 is rotated, namely the safety nut 13 is driven to rotate around the screw assembly 11.

Of course, it is to be understood that in other embodiments: the locking mechanism can also be a bolt mechanism; the car can be provided with a standby storage battery, the lock catch driving mechanism or the nut driving mechanism is an electric driving mechanism, and the unlocking operation part and the self-driving operation part are operation buttons for starting an electric component.

In another embodiment of the present invention, as shown in fig. 6-9, the twin-screw transmission system is disposed on the top of the self-balancing adjusting frame, and includes a motor 10 and a first spindle 25, and both the screw assemblies 11 are rotatably disposed in the self-balancing adjusting frame;

the output shaft of the motor 10 is in transmission connection with the first main shaft 25, and specifically: the top end of the self-balancing adjusting frame is also fixedly provided with a motor plate 41, and the motor 10 and the first main shaft 25 are both arranged on the motor plate 41; then, a driven wheel 42 is disposed on the first main shaft 25, a driving wheel is disposed on an output shaft of the motor 10, the driven wheel 42 and the driving wheel are both belt pulleys, and a driving belt 43 is sleeved on the driving wheel and the driven wheel 42 to realize transmission connection therebetween.

The two ends of the first main shaft 25 are respectively in transmission connection with the two screw assemblies 11 through a reverser 44: the commutator 44 is also fixed on the motor plate 41, and the first main shaft 25 is in transmission connection with the commutator 44 through a coupling 45. In this embodiment, the diverter 44 is a bevel gear diverter comprising a driving bevel gear connected to the first spindle 25 and a driven bevel gear connected to the screw assembly 11, the bevel gears being in meshing transmission and effecting a change in direction of transmission.

In order to realize the rotation of the screw rod assembly 11, a counter bore is further arranged on the bottom surface of the self-balancing adjusting frame corresponding to the position of the screw rod assembly 11, and the bottom end of the screw rod assembly 11 is inserted into the counter bore; and a rotating bearing sleeved on the screw rod assembly 11 is further arranged in the counter bore, so that the screw rod assembly 11 is tensioned, and the screw rod assembly 11 can rotate relative to the self-balancing adjusting frame.

The method specifically comprises the following steps: the bottom of the self-balancing adjusting frame is provided with a base 1, a counter bore is processed at the position where a polish rod 46 is installed on the base 1, the upper end of the polish rod 46 can penetrate through the counter bore, the diameter of the lower end of the polish rod 46 is large and cannot penetrate through the counter bore, and a bearing is installed between the lower end of the polish rod 46 and the counter bore of the base 1 to reduce friction force when the screw rod assembly 11 rotates. The upper end of the polish rod 46 passes through the counter bore of the base 1 and is connected with the lower end of the screw rod assembly 11 by screw threads and is tensioned.

Each screw assembly 11 is further sleeved with a driving nut 12, and the two driving nuts 12 are respectively fixed at two opposite side positions of the top of the car 4.

The method specifically comprises the following steps: for the convenience of installation, a car top plate 6 is arranged on the car 4 corresponding to the position of the driving nut 12; the drive nut 12 is mounted on the car roof 6.

In another embodiment of the present invention, the twin screw drive system is substantially the same as the previous embodiment, and comprises a self-balancing adjusting frame 2 and a cage 4; two screw driving components are arranged on the self-balancing adjusting frame 2, and each screw driving component comprises a screw component 11 which can be rotatably installed and a driving nut 12 which is sleeved on the screw component 11; the drive nut 12 is fixed to the car roof 6 to move the car 4 vertically.

The difference between this embodiment and the above embodiment is: in this embodiment, two belt assemblies as a transmission mechanism are connected to the motor 10, and are respectively connected to the two screw assemblies 11 through two belts 43 for synchronously driving the two screw assemblies 11 to rotate.

In an embodiment of the present invention, as shown in fig. 10-13, the screw assembly 11 includes a plurality of hollow upper screws 76, lower screws 47 and screw connection structures to be connected, the upper screws 76 and lower screws 47, and the outer diameters of the upper screws 76 and the lower screws 47 are the same;

the internal surface threaded connection of lower screw rod 47 has bolted connection pole 49, and supreme cover is equipped with uide bushing 48 and compact structure in proper order from down on bolted connection pole 49, and compact structure is used for fixed uide bushing 48, and uide bushing 48 is the external splines structure.

The adjacent screw rods are connected through a connecting structure arranged in the hollow screw rod, and the guide sleeve and the compression structure are connected together through a bolt connecting rod, so that the structure is more compact, the positioning precision is high, and the coaxiality is good; the setting of uide bushing can guarantee screw rod axiality from top to bottom. This application can effectively prevent to connect not hard up, improves the axiality of adjacent screw rod, guarantees passing through smoothly of drive nut.

Further, the screw connecting structure further includes a transmission assembly 50 for transmitting torque generated by the shaking of the screw; in an embodiment of the present invention, a key groove is formed between the outer surface of the guide sleeve 48 and the upper screw 76 and the lower screw 47, the transmission component arranged in the key groove is a flat key, the top of the guide sleeve 48 protrudes outwards to form an upper outer edge, the bottom of the guide sleeve 48 protrudes outwards to form a lower outer edge, and the upper outer edge of the guide sleeve 48 is in close contact with the inner surface of the upper screw 76; the lower outer edge of the guide sleeve 48 is in close contact with the inner surface of the lower screw 47, the flat key is arranged between the upper outer edge and the lower outer edge, the torque generated by the shaking of the screw can be effectively transmitted through the flat key, the centering performance of the upper screw and the lower screw is improved, and the guide sleeve has better positioning accuracy.

In another embodiment of the present invention, the transmission assembly 50 is two sets of pins, and the two sets of pins respectively pass through the upper screw 76 and the lower screw 47 and are fixed with the guide sleeve 48.

Further, the compression structure comprises a compression ring 51 and a compression cap 52, the compression ring 51 is of a hollow structure, the outer surface of the compression ring is provided with threads, and the compression ring is fixedly connected with the inner surface of the upper screw 76 through the threads; the pressing cap 52 is arranged at the top of the pressing ring 51, the pressing cap 52 is in threaded connection with the upper end of the bolt connecting rod 49, the pressing ring 51 is pressed, and the pressing cap presses the pressing ring, so that the guide sleeve is pressed, the structure is more compact, the positioning precision is high, and the coaxiality is good.

Furthermore, the bottom of the upper screw 76 is provided with an insertion hole, the top of the lower screw 47 is provided with a shaft shoulder matched with the insertion hole, the upper screw 76 and the lower screw 47 are inserted into the shaft shoulder through the insertion hole, the outer diameters of the upper screw and the lower screw are the same, the upper screw and the lower screw can be connected more firmly, and looseness is prevented.

In an embodiment of the present invention, see fig. 14-16 for a self-balancing adjusting frame, which includes a self-balancing adjusting structure and a plurality of support rods fixedly disposed on the self-balancing adjusting structure, the support rods are sleeved with reinforcing section bars 53, two ends of the reinforcing section bars 53 are provided with grooves 54, a panel 55 is fixedly disposed in the grooves 54, and the panel 55 is disposed between the two reinforcing section bars 53; the upper part of the supporting rod is sleeved with an elevator top plate 6, and the top of the supporting rod is provided with a fixing nut 56.

Further, the self-balancing adjusting structure comprises a base 1 and leveling bolts 57 arranged at four corners of the base 1, wherein the leveling bolts 57 are in threaded connection with the base 1; the bottom of the leveling bolt 57 is a curved spherical surface, and a gasket 58 is arranged at the contact part with the ground.

The landing legs of the elevator bottom frame are leveled by the aid of the leveling bolts, and the bottom frame is driven to move up and down by adjusting the leveling bolts, so that the bottom frame is quickly leveled. The utility model discloses simple swift horizontal adjustment who just can realize the underframe when the installation does not have the multilayer gasket moreover, has guaranteed the stability of elevator long-term operation vibrations in-process, has characteristics such as good reliability.

Further, a groove is formed in the top of the gasket 58, a curved spherical surface at the bottom of the leveling bolt 57 is placed in the groove, and the gasket 58 is made of stainless steel and is fixed on the ground through a bolt to prevent the gasket from moving. The arrangement of the gasket increases the contact area between the leveling bolt and the ground, and the upper surface of the gasket is provided with the groove which is matched with the curved spherical surface of the leveling bolt, so that the curved spherical surface of the leveling bolt is placed in the groove, the gasket can be effectively prevented from moving, and the elevator can stably run for a long time.

Furthermore, expansion bolts 59 are arranged on the base 1, the expansion bolts 59 penetrate through the base 1 to fix the base 1 on the ground, and the number of the expansion bolts is 4, and the expansion bolts are arranged near the leveling bolts 57. The base 1 is also provided with expansion bolts at its central portion. The setting of expansion bolts can further fix the underframe for later stage elevator operation is more stable.

Further, the support rods are arranged at four corners of the base 1 and play a supporting role, the support rods comprise a lower support rod 60 and an upper support rod 61 which are in threaded connection, the reinforcing section bars 53 are sleeved on the adjacent lower support rods 60, the panel 55 is arranged between the reinforcing section bars on the other three sides except the elevator door, the panel is fixedly connected with the reinforcing section bars through rivets, the reinforcing frame 62 is sleeved in the lower support rods 60, and the steps are sequentially repeated until the self-balancing adjusting frame is to reach the required height. Then, the upper supporting rod 61 which is processed to a proper length is connected with the upper end of the lower supporting rod 60 in a threaded mode, the reinforcing section bars 53 are sleeved into the upper supporting rod 61, the panel 55 is arranged between the two reinforcing section bars 53 on the four sides, and the reinforcing section bars 53 are firmly connected with the panel 55 through rivets. The elevator ceiling 6 is then nested into the upper support bar 61. The fixing nut 56 is screwed and tightened with the upper end of the upper support rod 61. The whole self-balancing adjusting frame is integrated and firmly connected with the ground, and finally the horizontal adjustment of the bottom frame is realized.

In another embodiment of the present invention, the upper and lower ends of the car 4 are both provided with an elevator guiding structure.

The elevator guide structure has eight groups, and the apex angle department of the upper end and the lower extreme of this car 4 all is equipped with this elevator guide structure, and the elevator guide structure of car 4 upper end and lower extreme sets up for the mirror image.

The elevator guiding structure comprises a guide wheel seat 63 and a guide wheel assembly 64:

the guide wheel base 63 is used for fixing on the car 4 of the elevator, and specifically, each corner of the car bottom plate 31 and the car top plate 14 is provided with a bolt hole for passing a bolt through the guide wheel base 63 so as to lock and fix the guide wheel base 63 by the bolt, and then each guide wheel base 63 is provided with a guide wheel assembly 64.

Specifically, the guide wheel assembly 64 is movably mounted on the guide wheel seat 63, and has a working end protruding out of the car:

in this embodiment, the guide wheel assembly 64 includes a guide wheel frame 65 of a long strip type and a guide wheel 66; one end of the guide wheel frame 65 is a working end protruding towards the direction of the self-balancing adjusting frame 2, and the other end is a mounting end mounted on the guide wheel seat 63; this leading wheel 66 locates the work end of this leading wheel carrier 65 to contradict on the self-balancing adjustment frame 2 inner wall of installation car, concrete connection mode is: the working end of the guide wheel frame 65 is U-shaped and has a groove, and the bearing 67 and the guide wheel 66 are placed in the groove of the working end of the guide wheel frame 65, and then fixed by passing the guide wheel shaft 68 through the upper end of the guide wheel frame 65, the bearing 67 and the guide wheel 66.

The specific structure of the guide wheel assembly 64 movably mounted on the guide wheel seat 63 is as follows: the guide wheel seat 63 is also provided with a transversely penetrating mounting hole, the mounting end on the guide wheel frame 65 is an inserted rod matched with the mounting hole, and the mounting end can be slidably inserted into the mounting hole; then, the rear portion of the mounting end passes through the mounting hole and is connected to a stopper nut 69, so that the guide wheel frame 65 can be slidably stopped on the guide wheel seat 63.

In this embodiment, the mounting holes of the guide wheel seat 63 are horizontally extended, and each guide wheel frame 65 protrudes out of the car 4 and horizontally abuts against the self-balancing adjusting frame 2.

Each of the elevator guiding structures further includes an elastic member, in this embodiment, the elastic member is a compression spring 77, the compression spring 77 is sleeved on the guiding wheel frame 65 and is disposed between the working end of the guiding wheel frame 65 and the guiding wheel seat to apply an acting force toward the inner wall surface of the self-balancing adjusting frame 2 to the guiding wheel frame 65.

Of course, the elastic member may be a gas spring, an elastic rubber member, or a torsion spring, and the same function can be achieved as long as the elastic member is provided at a position where the guide wheel assembly 64 is applied with a protrusion of the working end toward the car 4.

The self-balancing adjusting frame 2 has a frame bar extending in the depth direction of the car 4, in this embodiment vertically, and correspondingly, the guide wheel 66 is circumferentially provided with a groove, and the guide wheel 66 is clamped on the frame bar through the groove.

This kind of structure makes the elastic conflict of leading wheel 66 ability all the time on self-balancing adjustment frame 2, and it is further, can pass through recess elasticity joint on the frame member, has improved guide structure's suitability, and rolling contact, elasticity compress tightly's setting, and it all has high adaptability to frame member surface quality, straightness etc. of self-balancing adjustment frame 2. And the guide rail of the guide wheel 66 is a part of the self-balancing adjusting frame, so that the guide rail does not need to be independently installed, and the material and installation cost can be greatly reduced. And rolling friction is formed between the guide wheel and the guide rail when the lift car runs, so that the running is more stable.

In an embodiment of the present invention, see fig. 17-18, the driving nut for the screw elevator includes an external spline 70 in threaded connection with the screw assembly 11, and the external spline 70 is externally provided with an internal spline 71; and a gap exists between the internal spline and the external spline multi-tooth part; the upper part of the internal spline 71 is in threaded connection with a backing plate 72, the backing plate 72 is sleeved on the screw rod assembly 11, the inner surface of the backing plate 72 is in close contact with the screw rod assembly 11, and the backing plate 72 is located above the external spline 70. The bottom end of the internal spline 71 is fixedly connected with a cover plate 74 through a bolt 73, the cover plate 74 is sleeved on the screw rod assembly 11, the inner surface of the cover plate 74 is in close contact with the screw rod assembly 11, and the cover plate 74 is located below the external spline 70. When the screw rod rocks, the impact force can constantly be eliminated to inside and outside spline, makes the screw rod subassembly have better counterweight nature, is convenient for maintain the car stable.

Further, balls 75 are disposed between the backing plate 72 and the external spline 70 and between the external spline 70 and the cover plate 74, and the backing plate 72 presses the balls 75 against the upper surface of the external spline 70. The cover plate 74 presses the balls against the lower surface of the external spline 70. All be provided with the recess on backing plate and external splines and the apron, the roller can slightly remove in the recess, when the screw rod rocked to one side, the roller also can produce slight skew, can effectively eliminate the impact force for the car is steady.

The utility model discloses in, base 1 is fixed subaerial, and 2 lower parts of self-balancing adjustment frame are connected with base 1, and upper portion is elevator roof 6. Protective covers 7 are arranged on the periphery and the upper part of the elevator top plate 6. The motor, the main shaft, the coupler and the commutator in the double-screw transmission system 3 are arranged above the elevator top plate 6, the upper part of the screw penetrates through the elevator top plate 6 to be connected with the commutator, and the lower part of the screw is connected with the base. A plurality of screws can be connected to form a screw assembly 11 to reach the desired height of the elevator. Two driving nuts in the double-screw transmission system 3 and the car 4 are connected into a whole. The top of the elevator car 4 is provided with a double-screw elevator self-rescue structure 5, two sides of a main shaft of the elevator roof 6 in the double-screw transmission system 3 are respectively provided with a set of elevator counterweight pulley 8, and one end of the counterweight mechanism 9 penetrates through the counterweight pulley 8 by a steel wire rope to be connected with the elevator car 4. The self-balancing adjusting frame 2 is positioned at the outermost side of the elevator, a double-screw transmission system 3 is arranged inwards, and the innermost side is a car 4.

Therefore, the utility model discloses a thereby twin-screw has rotated and has made the nut drive the car move from top to bottom, and the atress is even, and the security is high, and the noise is little, can realize the inside passenger of car save oneself, space utilization is high, and occupation of land space is little.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims (9)

1. A novel double-screw elevator is characterized by comprising a self-balancing adjusting frame, a double-screw transmission system and a counterweight mechanism, wherein the double-screw transmission system is arranged at the top of the self-balancing adjusting frame;

the double-screw transmission system comprises a motor and two screw driving components;

the screw driving components comprise screw components, driving nuts sleeved on the screw components and a transmission mechanism, the two screw driving components are respectively arranged on two sides of the lift car, and the driving nuts are respectively arranged on the lift car;

the motor is in transmission connection with the screw driving component through the transmission mechanism so as to synchronously drive the driving nut to move along the corresponding screw component;

the top of the lift car is provided with an elevator self-rescue structure, and the elevator self-rescue structure comprises a self-driving assembly and a locking assembly;

the self-driving assembly comprises a safety nut, a nut driving mechanism in transmission connection with the safety nut and a self-driving operation part arranged in the lift car;

the safety nut is sleeved on the screw rod assembly and can be rotatably arranged on the lift car; the self-driving operation part is connected to the nut driving mechanism so as to drive the safety nut to rotate around the screw rod assembly through the nut driving mechanism;

the locking assembly comprises two locking mechanisms, a locking driving mechanism for driving the locking mechanisms to unlock and an unlocking operation part arranged in the car;

the driving nut is connected to the car through the locking mechanism; the unlocking operation part is connected to the locking driving mechanism so as to drive the locking mechanism to unlock through the locking driving mechanism.

2. The novel double-screw elevator as claimed in claim 1, wherein the locking mechanism comprises a bearing seat pivotally mounted, a bearing block protruding toward the corresponding driving nut is provided at the upper end of the bearing seat to form a hook structure, and a slot part is provided on the driving nut corresponding to the bearing block;

the lock catch driving mechanism is arranged between the two lock catch mechanisms and comprises a disengaging wheel, two pull rods and a rotating pressure rod;

the disengaging wheel can be rotatably installed on the car, one end of each of the two pull rods is eccentrically pivoted to the disengaging wheel, the other end of each of the two pull rods is respectively pivoted to the two clamping hook structures, and the rotating pressing rod is connected to the disengaging wheel to drive the disengaging wheel to rotate.

3. The novel twin-screw elevator according to claim 2, characterized in that: the unlocking operation part comprises a small pulley and a disengaging handle connected to the small pulley, the disengaging handle is arranged in the car, a pull rope is wound on the small pulley, and the other end of the pull rope is guided by a pulley assembly and connected to the rotating pressure rod.

4. The novel double-screw elevator is characterized in that a support is further arranged on the elevator car at a position corresponding to the safety nut, the safety nut is arranged below the support, and a face bearing is further arranged between the safety nut and the support; the end face bearing is sleeved on the screw rod assembly;

the nut driving mechanism is a first main shaft, and the self-driving operation part is a lifting handle which is pivoted; and two ends of the main shaft are respectively in transmission connection with the lifting handle and the safety nut through bevel gear sets.

5. The novel double-screw elevator is characterized in that the screw assembly comprises a plurality of hollow upper screws, lower screws and screw connecting structures which need to be connected, and the outer diameters of the upper screws and the lower screws are the same; the screw rod connecting structure comprises a hollow guide sleeve in threaded connection with the inner surface of the lower screw rod, and a bolt connecting rod penetrating through the guide sleeve, wherein the lower end of the bolt connecting rod is in threaded connection with the inner surface of the lower screw rod; and a pressing structure is arranged at the upper end of the bolt connecting rod and used for pressing the guide sleeve.

6. The novel twin screw elevator of claim 5, wherein the screw connection structure further comprises a transmission assembly for transmitting torque due to screw sloshing; the compression structure comprises a compression ring and a compression cap, the compression ring is of a hollow structure, the outer surface of the compression ring is provided with threads, and the compression ring is fixedly connected with the threads on the inner surface of the upper screw rod; the pressing cap is arranged at the top of the pressing ring, and the pressing cap is in threaded connection with the upper end of the bolt connecting rod and tightly presses the pressing ring.

7. The novel double-screw elevator as claimed in claim 1, wherein the self-balancing adjusting frame comprises a self-balancing adjusting structure and a plurality of support rods fixedly arranged on the self-balancing adjusting structure, reinforcing section bars are sleeved on the support rods, grooves are arranged at two ends of each reinforcing section bar, panels are fixedly arranged in the grooves, and the panels are arranged between the two reinforcing section bars;

the top of the supporting rod is sleeved with a top plate, and a fixing nut is arranged at the top of the supporting rod;

the self-balancing adjusting structure comprises a bottom frame and leveling bolts arranged at four corners of the bottom frame, and the leveling bolts are in threaded connection with the bottom frame; the bottom of the leveling bolt is a curved spherical surface, and a gasket is arranged at the contact part of the leveling bolt and the ground; the top of the gasket is provided with a groove, and the curved spherical surface at the bottom of the leveling bolt is placed in the groove; and an expansion bolt is further arranged on the bottom frame, penetrates through the bottom frame and fixes the bottom frame on the ground.

8. The novel double-screw elevator according to claim 1, characterized in that the drive nut comprises an internal spline in threaded connection with the screw assembly, an external spline is sleeved outside the internal spline, and a gap exists between the internal spline and the external spline multi-tooth part;

the upper part of the external spline is in threaded connection with a base plate, the base plate is sleeved on the screw rod assembly, the inner surface of the base plate is in close contact with the screw rod assembly, and the base plate is positioned above the internal spline;

the screw rod assembly is characterized in that the bottom end of the external spline is fixedly connected with a cover plate through a bolt, the cover plate is sleeved on the screw rod assembly, the inner surface of the cover plate is in close contact with the screw rod assembly, and the cover plate is located below the internal spline.

9. The novel double-screw elevator according to claim 8, characterized in that balls are arranged between the backing plate and the internal splines and between the internal splines and the cover plate, the backing plate presses the balls against the upper surface of the external splines, and the cover plate presses the balls against the lower surface of the external splines.

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