CN114988316B - Hand-operated rotary hoister - Google Patents
Hand-operated rotary hoister Download PDFInfo
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- CN114988316B CN114988316B CN202210792484.2A CN202210792484A CN114988316B CN 114988316 B CN114988316 B CN 114988316B CN 202210792484 A CN202210792484 A CN 202210792484A CN 114988316 B CN114988316 B CN 114988316B
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- worm
- hand
- guide sleeve
- transmission case
- operated rotary
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/08—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated
- B66F3/18—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated actuated through worm gearings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/42—Gripping members engaging only the external or internal surfaces of the articles
- B66C1/44—Gripping members engaging only the external or internal surfaces of the articles and applying frictional forces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C25/00—Cranes not provided for in groups B66C17/00 - B66C23/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/08—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated
- B66F3/10—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated with telescopic sleeves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/08—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated
- B66F3/16—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated actuated through bevel-wheel gearings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Gear Transmission (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
The utility model relates to the technical field of lifting equipment, and particularly discloses a hand-operated rotary lifting machine; the device comprises a fixed mounting seat, a worm gear lifting mechanism, a first hand rocker and an anti-skid grabbing mechanism, wherein a transmission box is fixedly arranged at the upper end of the fixed mounting seat, the worm gear lifting mechanism comprises a turbine and a worm, the lower end of the worm extending out of the transmission box is connected with a guide rod, the guide rod penetrates through the whole guide sleeve along a central axis, a limiting piece is connected between the guide rod and the inner wall of the guide sleeve, and the anti-skid grabbing mechanism is connected with the lower end of the guide sleeve; the utility model takes the worm gear and worm as the lifting transmission structure, so that the self-locking property is realized, meanwhile, the suspended object can be driven to rotate by 360 degrees through the connection function of the guide rod, the circumferential angle of the suspended object can be adjusted and the suspended object can be lifted, and the anti-skid grabbing mechanism can apply enough clamping force to the object, so that the object can be effectively prevented from slipping off, and the use safety of the whole equipment is greatly improved.
Description
Technical Field
The utility model relates to the technical field of lifting equipment, and particularly discloses a hand-operated rotary lifting machine.
Background
The hand-operated lifting device is common lifting equipment, is widely applied to various fields of building, logistics, chemical industry and the like, and is used for lifting objects to a certain height under a series of transmission structures by manually shaking the swinging rod during specific operation.
For example, the utility model patent with the application number of CN002159805 discloses a hand-operated lifter which mainly comprises a frame, a roller and a cable wound on the roller, and also comprises a hand-operated driving gear, wherein a gear transmission device is arranged between the driving gear and the roller, and the transmission device mainly comprises a driven gear, a gear shaft, a duplex gear and a spline gear; the driven gear is positioned on the gear shaft and meshed with the driving gear; the duplex gear is respectively meshed with the gear shaft and the spline gear; the spline gear is connected with the roller.
The hand-operated lifter disclosed by the patent has the advantages of large lifting weight, compact structure, convenience in operation, safety, reliability and the like, but has some defects. Firstly, in the process of lifting an object, once the external applied acting force is withdrawn, the lifted object can quickly fall under the action of self gravity and does not have a self-locking function; secondly, the hand-operated lifter is difficult to realize circumferential rotation simultaneously in the process of lifting an object, and particularly when goods are connected up and down by the lifting device, the goods can not be placed at a proper position only by virtue of lifting movement, and the hand-operated lifter still needs to be manually adjusted, so that time and labor are wasted; thirdly, the hand-operated hoister needs to use a cable to bind the object tightly when hoisting the object, is complex to operate, and once the cable does not bind the object, the hand-operated hoister is easy to slip when the weight of the object is overlarge, so that the object falls, and potential safety hazards exist. Therefore, to overcome the above-mentioned shortcomings of the existing hand-operated lifter, designing a hand-operated rotary lifter with reverse self-locking, circumferential rotation and capability of rapidly grabbing objects is a technical problem to be solved.
Disclosure of Invention
The utility model aims to provide a hand-operated rotary lifting machine with reverse self-locking, circumferential rotation and capability of quickly grabbing objects, so as to solve the defects of the existing hand-operated lifting machine in the actual use process.
The utility model is realized by the following technical scheme:
the utility model provides a hand-operated rotary hoister, which comprises a fixed mounting seat, a worm gear lifting mechanism, a first hand rocker and an anti-slip grabbing mechanism, wherein a transmission case is fixedly arranged at the upper end of the fixed mounting seat, the worm gear lifting mechanism comprises a turbine rotatably arranged in an inner cavity of the transmission case and a worm which vertically penetrates through the transmission case, a worm threaded hole matched with an external thread of the worm is formed in the central axis of the turbine, and the first hand rocker is rotatably connected to the transmission case and is used for driving the turbine to rotate around the central axis of the turbine;
the lower end of the worm extending out of the transmission case is connected with a guide rod; the fixed mounting seat below the transmission case is provided with a mounting groove, a connecting seat bearing is fixedly arranged in the mounting groove, a guide sleeve is inserted in the connecting seat bearing, the guide rod penetrates through the whole guide sleeve along the central axis of the guide sleeve, a limiting part is connected between the guide rod and the inner wall of the guide sleeve, and the anti-skid grabbing mechanism is connected with the lower end of the guide sleeve.
As the concrete content design of above-mentioned scheme, the antiskid is grabbed material mechanism includes the cylindricality piece that is connected with the guide sleeve lower extreme, the lower surface of cylindricality piece is connected with radial basic block, be provided with bar spacing groove in the radial basic block, be connected with the dwang in the bar spacing groove, and the terminal surface that the one end of dwang stretches out radial basic block is connected with the second hand rocker, is located the external screw thread has all been seted up at the dwang both ends in the bar spacing groove, and the opposite direction of two external screw threads sets up, the both ends in bar spacing groove are provided with respectively with two external screw assorted screw movable blocks, two the lower extreme of screw movable block all is connected with the grip block.
As the concrete content design of above-mentioned scheme, guide sleeve's lower extreme is connected with bulge loop spacing connecting block, annular barb groove with bulge loop spacing connecting block assorted is seted up to the upper surface of cylindricality piece.
As the specific content design of the scheme, a positioning hole is formed in the center of the groove wall of the annular barb groove, and the lower end of the guide rod extends into the positioning hole.
As the concrete content design of above-mentioned scheme, two trapezoidal grooves have been seted up to the side that the grip block is relative, be provided with the trapezoidal piece in the trapezoidal groove, and be provided with compression spring between the diapire of trapezoidal groove and the lower extreme of trapezoidal piece, be connected with the grip block on the outer terminal surface that the trapezoidal piece stretches out the trapezoidal groove.
As the specific content design of the scheme, the opposite side surfaces of the two clamping plates are respectively provided with a rubber anti-slip layer.
As the specific content design of above-mentioned scheme, be provided with driven conical gear on the outer disc of turbine, the tip that first hand rocker stretches into the transmission case inner chamber is connected with the initiative conical gear, and initiative conical gear and driven conical gear mesh and set up.
As the concrete content design of above-mentioned scheme, inner chamber upper end and lower extreme all are provided with deep groove ball bearing, the upper and lower end of turbine all rotates with deep groove ball bearing to be connected.
As the specific content design of the scheme, the upper surface of the transmission case is also provided with a bearing cover for pressing and fixing the deep groove ball bearing.
As a specific content design of the scheme, the top end of the guide sleeve is also provided with a limit washer, and the top end of the worm is also provided with a limit head.
The beneficial effects are that:
1) The hand-operated rotary elevator designed by the utility model takes the worm and gear as a lifting transmission structure and takes the hand lever as a driving part, so that the hand-operated structure of the whole elevator rotates flexibly, the structure has self-locking performance, the reverse self-locking function plays a role in safety protection, and the hand-operated rotary elevator adopts the worm and gear structure, has large transmission ratio, stable transmission and small noise, has large axial force of the worm and can suspend equipment with large weight below.
2) The guide rod at the lower end of the worm is connected with the guide sleeve, and the deep groove ball bearing is used for rotationally connecting the turbine in the transmission case, so that the guide rod can drive the suspended object to rotate by 360 degrees, the suspended object can circumferentially adjust the angle and can be lifted, the adjustment is convenient according to the needs, and the use is very convenient.
3) According to the utility model, the anti-skid grabbing mechanism is arranged at the lower end of the guide sleeve, when an object is required to be lifted, the two clamping blocks can be mutually close to each other to clamp the object by directly rotating the second hand rocker, and enough clamping force is applied to the object, so that the object is convenient to clamp and lift.
4) The utility model also improves the design of the clamping blocks, the two trapezoidal blocks can be further close under the guiding action of the respective trapezoidal grooves, when the weight of the lifted object is overlarge, the distance between the two trapezoidal blocks is larger in the downward moving process, so that enough clamping force is further applied to the object, the object can be effectively prevented from slipping in the two clamping pieces, and the use safety of the whole equipment is greatly improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic perspective view of the present utility model;
FIG. 2 is a schematic side view of the present utility model;
FIG. 3 is a schematic view of the internal planar structure of the present utility model;
FIG. 4 is a schematic perspective view of a bearing with a fixed mounting seat and a connecting seat in the present utility model;
FIG. 5 is a schematic perspective view of a turbine, a first hand rocker, and a bevel gear according to the present utility model;
FIG. 6 is a schematic perspective view of a section of a guide sleeve, a guide rod and a worm in the utility model;
FIG. 7 is a schematic diagram of a front perspective view of an anti-skid material grabbing mechanism in the utility model;
FIG. 8 is a schematic view of a bottom perspective of an anti-skid material grabbing mechanism according to the present utility model;
FIG. 9 is an enlarged schematic view of the structure of FIG. 3 a in accordance with the present utility model;
fig. 10 is a schematic perspective view of a clamping block, a trapezoid block, a clamping plate and the like in the present utility model.
Wherein:
1-a fixed mounting seat, 101-a mounting groove, 2-a lifting mechanism, 201-a turbine, 202-a worm, 203-a guide rod, 204-a connecting seat bearing, 205-a guide sleeve, 206-a limiting piece, 207-a convex ring limiting connecting block, 208-a driven conical gear, 209-a limiting gasket and 210-a limiting head; the novel anti-skid device comprises a first hand rocker, a 301-driving bevel gear, a 4-anti-skid grabbing mechanism, a 401-cylindrical block, a 4011-annular barb groove, a 402-radial base block, a 4021-bar-shaped limit groove, a 403-rotating rod, a 4031-external thread, a 404-second hand rocker, a 405-screw hole moving block, a 406-clamping block, a 406-trapezoid groove, a 407-trapezoid block, a 408-compression spring, a 409-clamping plate and a 410-rubber anti-skid layer; 5-transmission case, 501-deep groove ball bearing and 502-bearing gland.
Detailed Description
In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail with reference to fig. 1 to 10 in conjunction with examples.
Example 1
The embodiment 1 provides a hand-operated rotary elevator, and referring to fig. 1, 2 and 3, the main body part of the hand-operated rotary elevator comprises a fixed mounting seat 1, a worm gear lifting mechanism 2 and a first hand rocker 3. Wherein the fixed mounting seat 1 can be fixedly mounted on the equipment platform through a bolt connecting piece on the back plate.
A transmission case 5 is fixedly arranged at the upper end of the fixed mounting seat 1, and the worm and gear lifting mechanism 2 is arranged in the transmission case 5. The worm gear lifting mechanism comprises a worm wheel 201 rotatably arranged in the inner cavity of the transmission case 5 and a worm 202 vertically penetrating through the transmission case 5 in the specific arrangement process. The upper end and the lower end of the inner cavity of the transmission case 5 are respectively provided with a deep groove ball bearing 501, the upper end and the lower end of the turbine 201 are respectively rotatably connected with the deep groove ball bearings 501, and a bearing gland 502 for compressing and fixing the deep groove ball bearings 501 is further arranged on the upper surface of the transmission case 5 in order to further ensure the stability of the turbine 201 installed in the transmission case 5.
A worm screw hole 2011 matched with the external thread of the worm 202 is formed along the central axis of the worm wheel 201, and the worm 202 can be driven to ascend or descend along the central axis of the worm wheel 201 through the rotation action of the worm wheel 201 and the cooperation action of the worm 202 and the worm screw hole 2011. The first hand rocker 3 is then rotatably connected to the gearbox 5 and serves to drive the turbine 201 in rotation about its central axis. In a specific design scheme, referring to fig. 3 and fig. 5, a driven conical gear 208 is firstly arranged on the outer circular surface of a turbine 201, then a driving conical gear 301 is connected to the end part of a first hand rocker 3 extending into the inner cavity of a transmission case 5, and the driving conical gear 301 and the driven conical gear 208 are meshed; the turbine 201 rotates in the inner cavity of the transmission case 5 through the engagement transmission of the first hand rocker 3 and the two bevel gears 208.
Referring to fig. 3 and 6, a guide rod 203 is connected to the lower end of the worm 202 extending out of the transmission case 5. Meanwhile, a mounting groove 101 is formed in the fixed mounting seat 1 below the transmission case 5, and connecting seat bearings 204 are fixedly arranged in the mounting groove 101, and two connecting seat bearings 204 are arranged in the embodiment and are arranged at intervals up and down. A guide sleeve 205 is inserted into the two connector bearings 204, and the guide rod 203 is disposed along the central axis of the guide sleeve 205 through the entire guide sleeve 205. A stopper 206 is connected between the guide rod 203 and the inner wall of the guide sleeve 205 such that the guide rod 203 rotates circumferentially in synchronization with the guide sleeve 205 through the stopper 206. In addition, in order to prevent the worm 202 from descending too much along the central axis of the turbine 201 and the piston guide sleeve 205 ascending too much along with the guide rod 203, a limit head 210 is further provided at the top end of the worm 202, and a limit washer 209 is further provided at the top end of the guide sleeve 205.
The hand-operated rotary hoisting machine disclosed in this embodiment 1 drives the turbine 201 inside the transmission case 5 to rotate by rotating the first hand rocker 3 and then by the meshing transmission of the two bevel gears, at this time, the worm 20 is lifted upwards along the central axis of the turbine by the action of the turbine 201, and the guide sleeve 205 is lifted synchronously with the worm 202 by the action of the guide rod 203, at this time, the object lifted at the lower end of the guide sleeve 205 is effectively lifted. The whole hand-operated rotary hoister can randomly rotate 360 degrees due to the guide sleeve 205 when lifting the object, so that the suspended object can circumferentially adjust the angle and can be lifted, and the object can be conveniently adjusted as required. Meanwhile, due to self-locking performance between the worm and the worm gear, the falling of an object due to gravity under the action of external force can be prevented, and the safety is high.
Example 2
The embodiment 2 provides a hand-operated rotary elevator, and referring to fig. 1, fig. 2 and fig. 3, the main body part of the hand-operated rotary elevator comprises a fixed mounting seat 1, a worm gear lifting mechanism 2, a first hand rocker 3 and an anti-slip grabbing mechanism 4. Wherein the fixed mounting seat 1 can be fixedly mounted on the equipment platform through a bolt connecting piece on the back plate.
A transmission case 5 is fixedly arranged at the upper end of the fixed mounting seat 1, and the worm and gear lifting mechanism 2 is arranged in the transmission case 5. The worm gear lifting mechanism comprises a worm wheel 201 rotatably arranged in the inner cavity of the transmission case 5 and a worm 202 vertically penetrating through the transmission case 5 in the specific arrangement process. The upper end and the lower end of the inner cavity of the transmission case 5 are respectively provided with a deep groove ball bearing 501, the upper end and the lower end of the turbine 201 are respectively rotatably connected with the deep groove ball bearings 501, and a bearing gland 502 for compressing and fixing the deep groove ball bearings 501 is further arranged on the upper surface of the transmission case 5 in order to further ensure the stability of the turbine 201 installed in the transmission case 5.
A worm screw hole 2011 matched with the external thread of the worm 202 is formed along the central axis of the worm wheel 201, and the worm 202 can be driven to ascend or descend along the central axis of the worm wheel 201 through the rotation action of the worm wheel 201 and the cooperation action of the worm 202 and the worm screw hole 2011. The first hand rocker 3 is then rotatably connected to the gearbox 5 and serves to drive the turbine 201 in rotation about its central axis. In a specific design scheme, referring to fig. 3 and fig. 4, a driven conical gear 208 is firstly arranged on the outer circular surface of a turbine 201, then a driving conical gear 301 is connected to the end part of a first hand rocker 3 extending into the inner cavity of a transmission case 5, and the driving conical gear 301 and the driven conical gear 208 are meshed; the turbine 201 rotates in the inner cavity of the transmission case 5 through the engagement transmission of the first hand rocker 3 and the two bevel gears 208.
Referring to fig. 3 and 5, a guide rod 203 is connected to the lower end of the worm 202 extending out of the transmission case 5. Meanwhile, a mounting groove 101 is formed in the fixed mounting seat 1 below the transmission case 5, and connecting seat bearings 204 are fixedly arranged in the mounting groove 101, and two connecting seat bearings 204 are arranged in the embodiment and are arranged at intervals up and down. A guide sleeve 205 is inserted into the two connector bearings 204, and the guide rod 203 is disposed along the central axis of the guide sleeve 205 through the entire guide sleeve 205. A stopper 206 is connected between the guide rod 203 and the inner wall of the guide sleeve 205 such that the guide rod 203 rotates circumferentially in synchronization with the guide sleeve 205 through the stopper 206. In addition, in order to prevent the worm 202 from descending too much along the central axis of the turbine 201 and the piston guide sleeve 205 ascending too much along with the guide rod 203, a limit head 210 is further provided at the top end of the worm 202, and a limit washer 209 is further provided at the top end of the guide sleeve 205.
The anti-slip gripping mechanism 4 of this embodiment 2 can be referred to in fig. 7, 8 and 9, and includes a cylindrical block 401 connected to the lower end of the guide sleeve 205. When the two are connected, the lower end of the guide sleeve 205 is connected with the convex ring limiting connecting block 207, then the annular barb groove 4011 matched with the convex ring limiting connecting block 207 is formed in the upper surface of the cylindrical block 401, and the two are movably connected through the convex ring limiting connecting block 207 clamped in the annular barb groove 4011, so that the anti-falling effect is excellent. In addition, a positioning hole is formed in the center of the groove wall of the annular barb groove 4011, and the lower end of the guide rod 203 extends into the positioning hole, so that the lower end of the guide rod 203 is guided and positioned.
A radial base block 402 is connected to the lower surface of the cylindrical block 401, a bar-shaped limiting groove 4021 is formed in the radial base block 402, a rotating rod 403 is connected to the bar-shaped limiting groove 4021, and a second hand rocker 404 is connected to the end surface of the rotating rod 403 extending out of the radial base block 402. External threads 4031 are respectively arranged at two ends of the rotating rod 403 in the bar-shaped limiting groove 4021, the directions of the two external threads are opposite, screw hole moving blocks 405 which are respectively matched with the two external threads are respectively arranged at two ends of the bar-shaped limiting groove 4021, and clamping blocks 406 are respectively connected with the lower ends of the two screw hole moving blocks 405.
In this embodiment 2, when the object is lifted by rotating, the object is placed between the two clamping blocks 406, and then the second hand rocker 404 is rotated to make the rotating rod 403 rotate in the bar-shaped limiting groove 4021, at this time, the two clamping blocks 406 approach each other under the action of the external threads on the rotating rod 403 by the screw hole moving block 405, so as to clamp and fix the object. The first hand rocker 3 is then rotated again, the worm wheel 201 is rotated in the inner cavity of the transmission case 5 under the meshing transmission of the two bevel gears, and the guide rod 203 and the guide sleeve 205 synchronously move upwards through the cooperation of the worm wheel and the worm, so that the anti-skid grabbing mechanism 4 and the clamped object are synchronously lifted upwards.
Example 3
The embodiment 3 provides a hand-operated rotary elevator, and referring to fig. 1, fig. 2 and fig. 3, the main body part of the hand-operated rotary elevator comprises a fixed mounting seat 1, a worm gear lifting mechanism 2, a first hand rocker 3 and an anti-slip grabbing mechanism 4. Wherein the fixed mounting seat 1 can be fixedly mounted on the equipment platform through a bolt connecting piece on the back plate.
A transmission case 5 is fixedly arranged at the upper end of the fixed mounting seat 1, and the worm and gear lifting mechanism 2 is arranged in the transmission case 5. The worm gear lifting mechanism comprises a worm wheel 201 rotatably arranged in the inner cavity of the transmission case 5 and a worm 202 vertically penetrating through the transmission case 5 in the specific arrangement process. The upper end and the lower end of the inner cavity of the transmission case 5 are respectively provided with a deep groove ball bearing 501, the upper end and the lower end of the turbine 201 are respectively rotatably connected with the deep groove ball bearings 501, and a bearing gland 502 for compressing and fixing the deep groove ball bearings 501 is further arranged on the upper surface of the transmission case 5 in order to further ensure the stability of the turbine 201 installed in the transmission case 5.
A worm screw hole 2011 matched with the external thread of the worm 202 is formed along the central axis of the worm wheel 201, and the worm 202 can be driven to ascend or descend along the central axis of the worm wheel 201 through the rotation action of the worm wheel 201 and the cooperation action of the worm 202 and the worm screw hole 2011. The first hand rocker 3 is then rotatably connected to the gearbox 5 and serves to drive the turbine 201 in rotation about its central axis. In a specific design scheme, referring to fig. 3 and fig. 4, a driven conical gear 208 is firstly arranged on the outer circular surface of a turbine 201, then a driving conical gear 301 is connected to the end part of a first hand rocker 3 extending into the inner cavity of a transmission case 5, and the driving conical gear 301 and the driven conical gear 208 are meshed; the turbine 201 rotates in the inner cavity of the transmission case 5 through the engagement transmission of the first hand rocker 3 and the two bevel gears 208.
Referring to fig. 3 and 5, a guide rod 203 is connected to the lower end of the worm 202 extending out of the transmission case 5. Meanwhile, a mounting groove 101 is formed in the fixed mounting seat 1 below the transmission case 5, and connecting seat bearings 204 are fixedly arranged in the mounting groove 101, and two connecting seat bearings 204 are arranged in the embodiment and are arranged at intervals up and down. A guide sleeve 205 is inserted into the two connector bearings 204, and the guide rod 203 is disposed along the central axis of the guide sleeve 205 through the entire guide sleeve 205. A stopper 206 is connected between the guide rod 203 and the inner wall of the guide sleeve 205 such that the guide rod 203 rotates circumferentially in synchronization with the guide sleeve 205 through the stopper 206. In addition, in order to prevent the worm 202 from descending too much along the central axis of the turbine 201 and the piston guide sleeve 205 ascending too much along with the guide rod 203, a limit head 210 is further provided at the top end of the worm 202, and a limit washer 209 is further provided at the top end of the guide sleeve 205.
The anti-slip gripping mechanism 4 of this embodiment 3 can be referred to in fig. 7, 8 and 9, and includes a cylindrical block 401 connected to the lower end of the guide sleeve 205. When the two are connected, the lower end of the guide sleeve 205 is connected with the convex ring limiting connecting block 207, then the annular barb groove 4011 matched with the convex ring limiting connecting block 207 is formed in the upper surface of the cylindrical block 401, and the two are movably connected through the convex ring limiting connecting block 207 clamped in the annular barb groove 4011, so that the anti-falling effect is excellent. In addition, a positioning hole is formed in the center of the groove wall of the annular barb groove 4011, and the lower end of the guide rod 203 extends into the positioning hole, so that the lower end of the guide rod 203 is guided and positioned.
A radial base block 402 is connected to the lower surface of the cylindrical block 401, a bar-shaped limiting groove 4021 is formed in the radial base block 402, a rotating rod 403 is connected to the bar-shaped limiting groove 4021, and a second hand rocker 404 is connected to the end surface of the rotating rod 403 extending out of the radial base block 402. External threads 4031 are respectively arranged at two ends of the rotating rod 403 in the bar-shaped limiting groove 4021, the directions of the two external threads are opposite, screw hole moving blocks 405 which are respectively matched with the two external threads are respectively arranged at two ends of the bar-shaped limiting groove 4021, and clamping blocks 406 are respectively connected with the lower ends of the two screw hole moving blocks 405.
In order to prevent the two clamping blocks 406 from slipping due to insufficient clamping force on the object, referring to fig. 9 and 10, in embodiment 3, trapezoidal grooves 4061 are formed in the opposite sides of the two clamping blocks 406, a trapezoidal block 407 is disposed in each of the trapezoidal grooves 4061, and a compression spring 408 is disposed between the lower end of the trapezoidal block 407 and the bottom wall of the trapezoidal groove 4061. Then, a clamping plate 409 is attached to the outer end surface of the trapezoidal block 407 extending beyond the trapezoidal groove 4061. Also, in order to increase friction against the object, rubber slip-resistant layers 410 are provided on opposite sides of both clamping plates 409.
This embodiment 3 is through setting up anti-skidding grabbing mechanism 4 further improvement, when holding two grip blocks 406 draw close each other through rotating second hand rocker 404 with the object centre gripping, what is acted on object surface is two grip blocks 409, and two grip blocks 409 have received trapezoidal slot 4061 and trapezoidal block 407's guide effect, when the object of centre gripping is heavier, can make two trapezoidal blocks 407 follow trapezoidal slot 4061 and move down under the effect of frictional force, and two trapezoidal blocks 407 can be further close to each other in the process of moving down, thereby apply bigger clamping force to the object through grip blocks 409 and rubber skid resistant course 410, can effectively avoid taking place the slippage because of not enough clamping force to the object, security when greatly guaranteed the object promotes.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (8)
1. The hand-operated rotary hoister is characterized by comprising a fixed mounting seat (1), a worm gear lifting mechanism (2), a first hand rocker (3) and an anti-slip grabbing mechanism (4), wherein a transmission case (5) is fixedly arranged at the upper end of the fixed mounting seat (1), the worm gear lifting mechanism (2) comprises a turbine (201) which is rotatably arranged in an inner cavity of the transmission case (5) and a worm (202) which vertically penetrates through the transmission case (5), a worm threaded hole (2011) which is matched with external threads of the worm (202) is formed in the central axis of the turbine (201), and the first hand rocker (3) is rotatably connected to the transmission case (5) and used for driving the turbine (201) to rotate around the central axis of the worm;
the lower end of the worm (202) extending out of the transmission case (5) is connected with a guide rod (203); a mounting groove (101) is formed in a fixed mounting seat (1) below the transmission case (5), a connecting seat bearing (204) is fixedly arranged in the mounting groove (101), a guide sleeve (205) is inserted in the connecting seat bearing (204), a guide rod (203) penetrates through the whole guide sleeve (205) along the central axis of the guide sleeve (205), a limiting piece (206) is connected between the guide rod (203) and the inner wall of the guide sleeve (205), and the anti-skid grabbing mechanism (4) is connected with the lower end of the guide sleeve (205);
the anti-skid grabbing mechanism (4) comprises a cylindrical block (401) connected with the lower end of a guide sleeve (205), a radial base block (402) is connected to the lower surface of the cylindrical block (401), a bar-shaped limiting groove (4021) is formed in the radial base block (402), a rotating rod (403) is connected to the bar-shaped limiting groove (4021), a second hand rocker (404) is connected to the end face, extending out of the radial base block (402), of one end of the rotating rod (403), external threads (4031) are formed in two ends of the rotating rod (403) in the bar-shaped limiting groove (4021), the directions of the two external threads are opposite, screw hole moving blocks (405) matched with the two external threads are arranged at two ends of the bar-shaped limiting groove (4021), and clamping blocks (406) are connected to the lower ends of the two screw hole moving blocks (405);
trapezoidal grooves (4061) are formed in the opposite side faces of the two clamping blocks (406), trapezoidal blocks (407) are arranged in the trapezoidal grooves (4061), compression springs (408) are arranged between the lower ends of the trapezoidal blocks (407) and the bottom wall of the trapezoidal grooves (4061), and clamping plates (409) are connected to the outer end faces of the trapezoidal blocks (407) extending out of the trapezoidal grooves (4061).
2. The hand-operated rotary elevator according to claim 1, wherein the lower end of the guide sleeve (205) is connected with a convex ring limiting connection block (207), and an annular barb groove (4011) matched with the convex ring limiting connection block (207) is formed in the upper surface of the cylindrical block (401).
3. The hand-operated rotary elevator according to claim 2, wherein a positioning hole is formed at the center of the groove wall of the annular barb groove (4011), and the lower end of the guide rod (203) extends into the positioning hole.
4. A hand-operated rotary hoisting machine as claimed in claim 3, characterized in that the two clamping plates (409) are provided with rubber anti-slip layers (410) on opposite sides.
5. The hand-operated rotary hoister according to claim 1, characterized in that a driven bevel gear (208) is arranged on the outer circular surface of the turbine (201), the end part of the first hand rocker (3) extending into the inner cavity of the transmission case (5) is connected with a driving bevel gear (301), and the driving bevel gear (301) is meshed with the driven bevel gear (208).
6. The hand-operated rotary elevator according to claim 5, wherein deep groove ball bearings (501) are arranged at the upper end and the lower end of the inner cavity of the transmission case (5), and the upper end and the lower end of the turbine (201) are rotatably connected with the deep groove ball bearings (501).
7. The hand-operated rotary hoisting machine according to claim 6, characterized in that the upper surface of the transmission case (5) is further provided with a bearing cover (502) for pressing and fixing the deep groove ball bearing (501).
8. The hand-operated rotary hoisting machine according to claim 1, characterized in that the top end of the guide sleeve (205) is further provided with a limit washer (209), and the top end of the worm (202) is further provided with a limit head (210).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210792484.2A CN114988316B (en) | 2022-07-05 | 2022-07-05 | Hand-operated rotary hoister |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210792484.2A CN114988316B (en) | 2022-07-05 | 2022-07-05 | Hand-operated rotary hoister |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114988316A CN114988316A (en) | 2022-09-02 |
| CN114988316B true CN114988316B (en) | 2023-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210792484.2A Active CN114988316B (en) | 2022-07-05 | 2022-07-05 | Hand-operated rotary hoister |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1192076A (en) * | 1997-09-22 | 1999-04-06 | Mitsubishi Heavy Ind Ltd | Spreader device for wire rope for slinging for crane |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5032054A (en) * | 1987-11-04 | 1991-07-16 | Serv-Tech, Inc. | Aerial bundle puller |
| CN203754345U (en) * | 2014-03-28 | 2014-08-06 | 牛健 | Simple and portable manual lifting platform |
| CN105270983B (en) * | 2015-10-27 | 2017-12-12 | 张新全 | A kind of extraction clamp |
| CN211769812U (en) * | 2020-03-11 | 2020-10-27 | 浙江杰特工贸股份有限公司 | Mechanical auxiliary lifting device |
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2022
- 2022-07-05 CN CN202210792484.2A patent/CN114988316B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1192076A (en) * | 1997-09-22 | 1999-04-06 | Mitsubishi Heavy Ind Ltd | Spreader device for wire rope for slinging for crane |
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| CN114988316A (en) | 2022-09-02 |
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