LIFTING DEVICE

Abstract

The present utility model relates to the technical field of rope lifting, in particular to a lifter, comprising a base. A panel is hinged to the front side of the base by means of a first shaft, and a gear box is hinged to the rear side of the base by means of a second shaft. The gear box comprises a housing, an input shaft being provided inside the housing, and one end of the input shaft extending to the outside of the housing and being provided with an electric drill connection port. The input shaft transmits power to a first transmission gear by means of an input gear coaxially connected to the input shaft, the first transmission gear being coaxially connected to a second transmission gear, and the second transmission gear transmitting power to an output gear. The output gear is in transmission connection with an output shaft, the output shaft extending to the outside of the housing and being connected to a rope wheel, the rope wheel being arranged between the base and the panel, and a plurality of pressing wheels being provided on the rope wheel side of the base. The present utility model can be used in cooperation with fiber safety ropes to realize electric ascending and manual descending, and has functions such as preventing misoperation of electric drills, preventing incorrect installation of ropes and preventing reverse rotation of rope wheels, thereby having high safety and great popularization significance.

Description

A lifter Technical Field

[0001] The utility model relates to the technical field of rope lifting, in particular to a lifter. Background Art

[0002] A lift is a mechanical device used to facilitate the vertical transportation of people or goods between different floors. The lift can be manual or automatic. However, most manual lifts are complicated to use, have blind spots in operation, and are not flexible enough. For example, the drive of the electric drill does not have an anti-misoperation function. When a person uses the electric drill without paying attention to the direction of the drill, there are certain safety hazards. In addition, many do not have an anti-reversal device, or the anti-reversal function of the anti-reversal device is relatively poor, which can easily lead to safety accidents.

[0003] In order to solve the above problems, the purpose of the utility model is to provide a lifter with the function of preventing electric drill from misoperation and dual anti-reversal function, which is flexible, convenient, safe and reliable and has promotion significance. Utility Model Content

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A lifter includes a base, a panel is hinged to the front side of the base through a first axis, a gear box is hinged to the rear side of the base through a second axis, the gear box includes a housing, an input shaft is provided in the housing, one end of the input shaft extends to the outside of the housing and is provided with an electric drill connection port, the input shaft transmits a first transmission gear through an input gear coaxially connected thereto, the first transmission gear is coaxially connected to a second transmission gear, the second transmission gear transmits an output gear, the output gear is connected to an output shaft, the output shaft extends to the outside of the housing and is connected to a pulley, the pulley is provided between the base and the panel, the outer side of the panel is curved, and fits with the base when closed, and M pressure wheels are provided on one side of the pulley on the base;

[0006] The gear box is provided with a limit piece passing through the base on the side facing the base, an extension is provided on the upper end of the gear box, the extension is provided with a guide groove, the gear box extension is connected to the follow-up shift block and the handle through shaft four, a shift block groove is provided on one side of the follow-up shift block and a handle drive groove is provided on the other side, one end of shaft one passes through the guide groove and extends into the shift block groove, and a handle push block is provided on the inner side of the handle facing the follow-up shift block, and the handle push block can be rotatably provided in the handle drive groove and drives the follow-up shift block to rotate with the handle.

[0007] Furthermore, a return torsion spring is provided in the handle.

[0008] Furthermore, a first outer ring is mounted on the outer side of the shaft via a bearing.

[0009] Furthermore, the M pressure wheels are rotatably connected to the base, and a wear-resistant block is provided on one side of the M pressure wheels on the base.

[0010] Furthermore, an elastic pin is provided on the base, and N clamping holes through which the elastic pin passes are provided on the panel.

[0011] Furthermore, the limiting member includes a guide post and a convex plate arranged at one end of the guide post, and the base is provided with a limiting groove matching the limiting member.

[0012] Furthermore, the housing of the gearbox includes a front housing and a rear housing, and the input gear, the first transmission gear, the second transmission gear and the output gear are all installed between the front housing and the rear housing.

[0013] Furthermore, a one-way ratchet is provided on one side of the output gear, and the one-way ratchet is pressed against the output gear by a spring.

[0014] Furthermore, any one of the input gear, the first transmission gear or the second transmission gear is provided with a one-way bearing.

[0015] Furthermore, an anti-reversal device is provided at one end of the output shaft, and the anti-reversal device includes a centrifugal column installed at one end of the output shaft, and a one-way chuck is provided on the outside of the centrifugal column.

[0016] The utility model has the following beneficial effects:

[0017] 1. The utility model is flexible, convenient, safe and reliable in use through electric ascent and manual descent. When electric ascent is required, the handle is in the clamping position (the position in Figure 1), the rope pulley and the pressure wheel are tightly grasped on both sides of the rope, and the electric drill is used to lift. The output end of the electric drill is inserted into the electric drill connection port. The torque is transmitted from the output end of the electric drill to the input shaft, the first transmission gear, the second transmission gear, the output gear, the output shaft and finally to the rope pulley. The rope pulley rotates, driving the hoist to rise along the rope, which is convenient for high-altitude workers to operate. When it is necessary to descend, the handle is manually rotated in the opposite direction. There is a transition process in the rotation of the handle (the rope is still grasped during this process). The handle is continued to be rotated, so that the base and the gear box with the second axis as the hinge point rotate relative to each other, and the angle between the base and the gear box gradually increases. At this time, the distance between the rope pulley and the pressure wheel gradually increases, and the friction between the rope and the device gradually decreases. The grip of the rope by the hoist begins to slowly release and decreases, achieving a controlled descent. The high-altitude worker only needs to control the opening angle of the handle to control the grip between the rope and the device.

[0018] 2. This utility model has the function of preventing the electric drill from being operated incorrectly. When the output direction of the electric drill is incorrect, due to the action of the one-way bearing, the one-way bearing will idle, and the output torque of the electric drill cannot be transmitted to the output shaft, and the rope pulley will not rotate. Only when the output direction is correct can the torque of the electric drill be output to the rope pulley for lifting operation;

[0019] 3. The outer side of the panel designed in this utility model is curved, and fits in with the base when closed, which can prevent the rope from being installed in the wrong direction and has the function of preventing the rope from being installed incorrectly;

[0020] 4. The anti-reverse device of the utility model effectively prevents the output shaft and the rope pulley from reversing by cooperating with the centrifugal column and the one-way chuck to block the unidirectional rotation. At the same time, the one-way ratchet meshes with the output gear, so that the output gear can only rotate in one direction and cannot reverse, which has a dual anti-reversal function of the rope pulley. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 is a schematic diagram of the overall structure of another side of the present invention;

[0023] Figure 3 is an overall exploded view of the present invention;

[0024] Figure 4 shows the internal structure of the gearbox of the present invention;

[0025] Figure 5 is a schematic diagram of the driving of the external and internal electric drill of the present invention;

[0026] Figure 6 is a schematic structural diagram of the anti-reversal device of the present invention;

[0027] Figure 7 is a schematic structural diagram of the rear housing of the present invention;

[0028] Figure 8 is a schematic structural diagram of the front housing of the present invention;

[0029] Figure 9 is a schematic structural diagram of the utility model follower shift block;

[0030] Figure 10 is a schematic structural diagram of another side of the utility model follower shift block;

[0031] FIG11 is a schematic structural diagram of the handle of the present invention.

[0032] Wherein: base 1, pin hole 11, elastic pin 12, limit groove 13, guide groove 14, pressure wheel 15, wear block 16, main hole 17, auxiliary hole 18, panel 2, clamping hole 21, gear box 3, front housing 31, extension 311, guide groove 3111, follower block 312, block groove 3121, handle drive groove 3122, handle 313, handle push block 3131, rear housing 32, second spring hole 321, input shaft 4, electric drill connection port 41, input gear 42, transmission shaft 5, first transmission gear 51, one-way bearing 511, second transmission gear 52, output shaft 6, output gear 61, pulley 62, anti-reverse device 63, centrifugal column 631, one-way chuck 632, reverse slot 6321, ratchet shaft 7, one-way ratchet 71, meshing portion 711, first spring hole 712, limiter 8, shaft 1 100, first outer ring 1001, shaft 2 200, shaft 4 400, external electric drill 500, rope 600. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] The following is a detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0035] As shown in Figure 1-11, a lifter includes a base 1, the front side of the base 1 is hinged with a panel 2 through an axis 100, the rear side of the base 1 is hinged with a gear box 3 through an axis 200, the gear box 3 includes a shell, the shell includes a front shell 31 and a rear shell 32, the front shell 31 and the rear shell 32 are fastened together by fasteners, an input shaft 4, a transmission shaft 5, an output shaft 6 and a ratchet shaft 7 are installed between the front shell 31 and the rear shell 32, the input shaft 4 is equipped with an input gear 42, the transmission shaft 5 is equipped with a first transmission gear 51 and a second transmission gear 52 from back to front, the output shaft 6 is equipped with an output gear 61, and the ratchet shaft 7 is equipped with a one-way ratchet 71, wherein the input gear 42 is transmission-connected to the first transmission gear 51, the first transmission gear is coaxially connected to the second transmission gear 52, the second transmission gear 52 is transmission-connected to the output gear 61, and the output gear 61 is meshed with the one-way ratchet 71;

[0036] One end of the input shaft 4 extends to the outside of the rear housing 32 and is provided with an electric drill connection port 41. One end of the output shaft 6 extends to the outside of the front housing 31 and is connected to a pulley 62. The pulley 62 is fitted with a rope 600 and rotates with the external electric drill 500 through the electric drill connection port 41 (the arrow line in Figure 5 indicates the rotation direction of the electric drill 500), thereby driving the input gear 42 fitted on the input shaft 4 to transmit the power. The input gear 42 drives the first transmission gear 51 to rotate, and the first rotating gear drives the coaxial second transmission gear 52 to rotate. The second transmission gear 52 drives the output gear 61 to rotate, and the output gear 61 drives the pulley 62 on the output shaft 6 to rotate, thereby driving the rope 600 to be lifted.

[0037] One-way bearings 511 are provided in the input gear 42, the first transmission gear 51, and the second transmission gear 52. In this embodiment, a one-way bearing 511 is further provided between the first transmission gear 51 and the transmission shaft 5. The one-way bearing 511 can enable the first transmission gear 51 to drive the second transmission gear 52 to rotate in one direction. When the electric drill is rotated in the wrong direction, the input gear 42 drives the first transmission gear 51 to rotate in the opposite direction. Due to the one-way rotation effect of the one-way bearing 511, the one-way bearing 511 will idle at this time, cutting off the rotation of the transmission shaft 5 driven by the first transmission gear 51. The rope 600 will not rotate, which can effectively prevent the risk of accidents caused by reversal.

[0038] As shown in Figures 4 and 6, an anti-reversal device 63 is provided at one end of the output shaft located at the rear side of the base 1. The anti-reversal device includes a centrifugal column 631 installed at one end of the output shaft 6. A one-way chuck 632 is provided on the outer side of the centrifugal column 631. The one-way chuck 632 is fastened to the outer side of the rear housing 32 by fasteners.

[0039] The inner wall of the one-way chuck 632 has two oppositely arranged reverse grooves 6321. The reverse grooves 6321 block the centrifugal column 631, effectively preventing the output shaft 6 from reversing, and effectively avoiding dangerous accidents caused by the reversal problem of the rope 600 due to ratchet wear, thereby having higher safety.

[0040] When the gear 61 is turned in the opposite direction, the gear 61 is locked and the locking cam 720 is locked, so that the gear 61 can be locked in the locked state.

[0041] Furthermore, one end of the front housing 31 has an integrally connected extension portion 311, and a guide groove 3111 is provided on the extension portion 311. The extension portion 311 is connected to a follower block and a handle 313 via a fourth shaft 400. The fourth shaft 400 rotatably connects the handle 313, the follower block and the extension portion 311 of the rear housing 32 together through a fastener. The follower block is arranged between the handle 313 and the extension portion 311, and a block groove 3121 is provided on the side of the follower block facing the extension portion 311, and a handle drive groove 3121 is provided on the side of the follower block facing the handle 313. 22. The handle 313 has a handle 313 push block 3131 on the side facing the follower block. A return torsion spring (not shown) is installed in the handle driving groove 3122. The return torsion spring can keep the handle 313 in a clamped state with the rope 600 to prevent the handle 313 from being accidentally rotated to a loose state with the rope 600, thereby providing a certain degree of safety. The handle 313 push block 3131 is rotatably arranged in the handle driving groove 3122 and abuts against the return torsion spring. The handle 313 push block 3131 on the handle 313 drives the follower block to rotate with the handle 313.

[0042] One end of shaft 100 passes through the guide groove 3111 and extends into the shift block groove 3121 , and shaft 100 plays a guiding role in the guide groove 3111 and the shift block groove 3121 .

[0043] Furthermore, a limiting member 8 passing through the base 1 is installed on the side of the gear box 3 facing the base 1, and a limiting groove matching the limiting member 8 is opened on the base 1, wherein the limiting member 8 includes a guide column and a convex plate arranged at one end of the guide column, the guide column has a guiding function in the limiting groove, and the convex plate is on the limiting groove and flush with the surface of the base 1, playing a guiding and anti-slip function.

[0044] Furthermore, a guide groove 14 is provided on the base 1 for slidingly cooperating with the output shaft 6. One end of the output shaft 6, which is provided with a rope pulley 62, passes through the base 1. The output shaft 6 plays a guiding role in the guide groove 14. The rope pulley 62 is provided between the base 1 and the panel 2. Three pressure wheels 15 are provided on one side of the rope pulley 62 on the base 1. The three pressure wheels 15 are rotatably connected to the base 1. A wear-resistant block 16 is also installed on one side of the three pressure wheels 15 on the base 1.

[0045] When the device is loaded, the three pressure wheels 15 and the rope wheel 62 compress the rope 600 to cause it to bend, increasing the contact between the rope 600 and the rope wheel 62 and the pressure wheel 15, thereby increasing the friction, which can lift more mass and has higher safety.

[0046] It should be supplemented that the number of the pressure wheels 16 can be increased or decreased according to the total amount of load-bearing objects.

[0047] A first outer ring 1001 is mounted on the outside of the shaft 100 via a bearing. The first outer ring 1001 and the wear-resistant block 16 are in frictional contact with the rope 600, which can effectively prevent the wear of the device caused by the friction of the rope 600.

[0048] Furthermore, a pin hole 11 is provided on the base 1, a block is provided on the inner wall of the pin hole 11, an elastic pin 12 is installed on the pin hole 11, and a pin groove is provided on the outer wall of the elastic pin 12 for cooperating with the block in front and back. Two card holes 21 through which the elastic pin 12 passes are provided on the panel 2. The elastic pin 12 can be pressed back and forth to switch on the two card holes 21, which can effectively prevent the panel 2 from being opened by mistake.

[0049] The base 1 also has a main hole 17 and a secondary hole 18. The main hole 17 is used to connect the device to the lock, and then connect the safety belt or anchor point. The secondary hole 18 is used to connect other locks, which is convenient for forming a pulley group labor-saving system to lift heavier objects.

[0050] Working principle:

[0051] When installing the rope 600, first rotate the handle 313 away from the device to increase the distance between the pressure wheel 15 and the rope wheel 62, then press the elastic pin 12 on the base 1, rotate the panel 2 to expose the rope wheel 62 to the outside, and then buckle the rope 600 onto the rope wheel 62. After buckling the rope 600, rotate the handle 313 toward the device to reduce the distance between the pressure wheel 15 and the rope wheel 62, so that the pressure wheel 15 and the rope wheel 62 clamp the rope 600, and then rotate the panel 2 in the opposite direction to engage the elastic pin 12.

[0052] The utility model is raised by driving the electric drill connection port 41 through an external electric drill 500 and lowered by manually controlling the handle 313. When it is necessary to rise, the handle 313 is in a clamped state, and the electric drill connection port 41 is driven by the external electric drill 500 to rotate forward, and the electric drill connection port 41 drives the input gear 42 of the same input shaft 4 to rotate forward, and the input gear 42 drives the first transmission gear 51 to rotate counterclockwise, and the first transmission gear 51 drives the second transmission gear 52 of the same transmission shaft 5 to rotate counterclockwise, and the second transmission gear 52 drives the output gear 61 to rotate forward, and the output gear 61 drives the rope pulley 62 of the same output shaft 6 to rotate forward, so that the rope 600 enters the rope pulley 62 from the first outer ring 1001 and extends out of the rope pulley 62 from the wear-resistant block 16, so that the device drives the human body or goods to rise;

[0053] When it is necessary to descend, the handle 313 is slowly pulled manually to make the base 1 and the gear box 3 rotate relative to each other with the shaft 200 as the fulcrum. The angle between the base 1 and the gear box 3 with the shaft 200 as the fulcrum gradually increases. At the same time, the output shaft 6 will slide in the guide groove 14, so that the distance between the pulley 62 and the three pressure wheels 15 gradually increases, so that the friction between the rope 600 and the pulley 62 and the three pressure wheels 15 gradually decreases, thereby realizing the descent of the rope 600. The operation is flexible and simple, which is conducive to adjusting the working position or quickly escaping in an emergency.

[0054] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lifting device that comprises a base, wherein the front side of the base is pivotally connected to a panel via a first shaft, and the rear side of the base is pivotally connected to a gearbox via a second shaft, the gearbox comprises a housing, an input shaft is mounted inside the housing, one end of the input shaft projects beyond the housing and is provided with an opening for connecting an electric drill, the input shaft drives a first transmission gear through an input gear coaxially connected to it, wherein the first transmission gear is coaxially connected to a second transmission gear, the second transmission gear drives an output gear, the output gear is driveably connected to the output shaft, the output shaft extends beyond the housing and is connected to a rope pulley, the rope pulley is located between the base and the panel, and M pressure rollers are mounted on one side of the rope pulley on the base; On the side of the gearbox facing the base, a limiting element is installed, passing through the base, on the upper end of the gearbox, an extension part is installed, the extension part is provided with a guide groove, and the extension part of the gearbox is connected to the control cam and the handle through the fourth shaft, on one side of the control cam there is a groove for the cam, and on the other side there is a groove for the handle drive, wherein one end of the first shaft passes through the guide groove and enters the groove for the cam, on the inner side of the handle facing the inner side of the control cam, a pushing element of the handle is installed, the pushing element of the handle is pivotally fixed in the groove for the handle drive and drives the control cam into rotation together with the handle.

2. A lifting device according to paragraph 1, characterized in that a torsion return spring is installed inside the handle.

3. A lifting device according to paragraph 1, characterized in that a first outer ring passing through a bearing is installed on the outer side of said shaft.

4. A lifting device according to claim 1, characterized in that M of said rollers are connected to the base with the possibility of rotation, and a wear-resistant block is installed on one side of M of said rollers on the base.

5. A lifting device according to paragraph 1, characterized in that elastic pins are installed on the base, and N clamping holes are installed on the panel through which the elastic pins can pass.

6. A lifting device according to claim 1, characterized in that the limiting element comprises a guide column and a protruding disk mounted on one end of the guide column, and a limiting groove corresponding to the limiting element is installed on the base.

7. The lifting device according to claim 1, characterized in that the gearbox housing comprises a front housing and a rear housing, and the input gear, the first transmission gear, the second transmission gear and the output gear are installed between the front housing and the rear housing.

8. A lifting device according to claim 1, characterized in that a one-way reverse ratchet is installed on one side of the output gear, the one-way reverse ratchet is pressed against the output gear by a spring.

9. The lifting device according to claim 1, characterized in that any of the input gear, the first transmission gear, or the second transmission gear is provided with a one-way bearing.

10. A lifting device according to claim 1, characterized in that a reverse motion blocker is installed on one end of the output shaft, the reverse motion blocker comprises a centrifugal mechanism installed on one end of the output shaft, and a one-sided clamping chuck is installed on the outer side of the centrifugal mechanism.