Elevator

Abstract

The utility model discloses an elevator which comprises a base. A follower wheel is arranged on the swing rod, the swing rod is connected with the driving part and arranged on the base, and the swing rod can rotate relative to the base under the driving of the driving part so that the follower wheel can do arc displacement motion; the lifting seat is arranged on the base and can move up and down relative to the base, the lifting seat is provided with a first abutting part and a concave arc surface part which are used for abutting against the follower wheel, and the follower wheel can make arc displacement movement by abutting against the first abutting part so as to drive the lifting seat to move upwards; the follow-up wheel can make arc displacement movement by abutting against the concave arc surface portion so that the lifting base can be kept at the first preset height position, through the arrangement of the concave arc surface portion, when the follow-up wheel abuts against any position in the concave arc surface portion, the height of the lifting base can be kept unchanged, the lifting precision of the lifting base relative to the base is guaranteed, and the lifting precision of the lifting base is improved. And the lifting deviation is reduced, and the lifting seat can be accurately butted to an external wire body.

Description

Technical Field

[0001] The present application relates to the field of elevators, and in particular to an elevator. Background Art

[0002] During the product assembly process, multiple assembly lines are used. The roller heights of different lines depend on the product assembly process. When the product switches between assembly lines in different areas, the rollers on them are driven by the elevator to adjust their heights, and then they are smoothly docked to input products onto the rollers or output products on the rollers. Elevator equipment has been widely used in various fields. Counterbalanced weight elevators are generally used on the market, including chain lifting mechanisms and counterweight units. After long-term operation of counterbalanced weight elevators, the chain will be elongated, resulting in deviations in the lifting position, poor precision, affecting the docking of the rollers, and a short lifespan. In addition, the matching structure of the chain and sprocket requires regular lubrication and cleaning, and the maintenance cost is high. Utility Model Content

[0003] In order to solve the above problems, the present application provides a lifting machine.

[0004] According to one aspect of an embodiment of the present application, a hoist is disclosed, which includes a base; a driving member and a rocker arm, wherein a follower wheel is arranged on the rocker arm, the rocker arm is connected to the driving member and is arranged on the base, and the rocker arm can rotate relative to the base under the drive of the driving member so that the follower wheel performs an arc displacement motion; a lifting seat, which is arranged on the base and can move up and down relative to the base, and the lifting seat is provided with a first abutting portion and a concave arc portion portion for abutting against the follower wheel, the follower wheel can drive the lifting seat to move upward by abutting against the first abutting portion to perform an arc displacement motion, and the follower wheel can perform an arc displacement motion by abutting against the concave arc portion portion to keep the lifting seat at a first preset height position.

[0005] In an exemplary embodiment, the first abutment portion is a planar structure, the concave arc surface portion is an arc-shaped groove structure, the first abutment portion is connected to one side of the concave arc surface portion, and the rocker arm can rotate and lift upward relative to the base, so that the follower wheel abuts against the first abutment portion and moves toward the direction close to the concave arc surface portion to drive the lifting seat to move upward.

[0006] In an exemplary embodiment, a second abutment portion for abutting against the follower wheel is provided on the lifting seat, and the follower wheel can drive the lifting seat to move downward by abutting against the second abutment portion to make an arc displacement movement, and the first abutment portion and the second abutment portion are respectively connected to the two sides of the concave arc surface portion, wherein: when the rocker arm rotates in a clockwise circle, the first abutment portion is located on the left side of the concave arc surface portion, and when the rocker arm rotates in a counterclockwise circle, the first abutment portion is located on the right side of the concave arc surface portion; and / or the rotation center of the rocker arm is opposite to the concave arc surface portion up and down; and / or the center angle of the concave arc surface portion is 30°~40°; and / or the lifting machine also includes a first sensor, which is arranged on the lifting seat and configured to sense the follower wheel entering the concave arc surface portion.

[0007] In an exemplary embodiment, a limit member is provided on the base, and the limit member is located below the lifting seat. The limit member is configured to be able to resist and support the lifting seat after the rocker arm rotates downward until the elevator descends to a second preset height position, so as to separate the lifting seat from the follower wheel.

[0008] In an exemplary embodiment, the limiting member includes a limiting seat, a limiting bolt and a first limiting nut, the limiting seat is arranged on the base, the limiting bolt is threadedly connected to the limiting seat, and the first limiting nut is threadedly connected to the limiting bolt and abuts against the bottom surface of the limiting seat.

[0009] In an exemplary embodiment, the lifting machine further includes a sensing block, a second sensor, a third sensor and a controller, wherein the sensing block is arranged on the lifting seat, the second sensor and the third sensor are respectively arranged on the base at intervals in the up and down directions, the second sensor is configured to sense the sensing block, the third sensor is configured to sense the sensing block, the controller is electrically connected to the second sensor, the third sensor and the driving member respectively, and the controller is configured to control the output end of the driving member to decelerate until it stops when the second sensor senses the rising sensing block, and to control the output end of the driving member to decelerate when the third sensor senses the falling sensing block; and / or the lifting seat includes a connecting part and a supporting part, the connecting part is slidably connected to the base up and down, the supporting part is connected to the connecting part and is constructed to form an L shape with each other, and a roller is provided on the top surface of the supporting part.

[0010] In an exemplary embodiment, the lifting seat includes a connecting part and a lifting block, the connecting part is slidably connected to the base up and down, the connecting part has a first switching position and a second switching position, the bottom surface of the lifting block is provided with the concave arc portion with the opening facing downward, the lifting block is detachably connected to the connecting part, the lifting block can be selectively set at the first switching position and the second switching position, and the rocker arm is detachably connected to the base and is set corresponding to the position of the lifting block.

[0011] In an exemplary embodiment, the first switching position and the second switching position are distributed up and down on the connecting portion.

[0012] In an exemplary embodiment, the lifting machine also includes a positioning screw, a first socket is provided on one of the base and the lifting seat, and a second socket is provided on the other, the first socket and the second socket are respectively distributed up and down, and the positioning screw is provided with a second limiting nut and a third limiting nut spaced apart up and down along its extension direction, the second limiting nut is connected to the first socket, and the third limiting nut is connected to the second socket.

[0013] In an exemplary embodiment, the lifting machine also includes a fourth sensor, a third clamping seat is provided on the lifting seat, a clamping hole is provided on the third clamping seat for the positioning screw to be inserted, the fourth sensor is arranged on the third clamping seat and facing the clamping hole, and the fourth sensor is configured to sense the positioning screw entering the clamping hole; a controller is electrically connected to the fourth sensor and the driving member, and is configured to energize the driving member when the fourth sensor senses the positioning screw, otherwise the driving member is powered off.

[0014] The technical solution provided by the embodiments of the present application includes at least the following beneficial effects:

[0015] The lifting machine disclosed in the present application includes a base, a driving member, a rocker arm and a lifting seat. The lifting seat can enter a first preset height position for docking with an external line body. The lifting seat is provided with a first abutment portion and a concave arc portion portion. The rocker can rotate relative to the base under the drive of the driving member, so that the follower wheel on the rocker can perform an arc displacement movement. The follower wheel abuts against the first abutment portion to drive the lifting seat to move upward relative to the base. After the lifting seat is lifted to the first preset height position, the follower wheel abuts against the concave arc portion portion to move, so that the lifting seat can always remain at the first preset height position. The utility model, through the setting of the concave arc portion portion, enables the follower wheel used for lifting the lifting seat to maintain the height of the lifting seat unchanged when it abuts against any position in the concave arc portion portion, thereby ensuring the lifting accuracy of the lifting seat relative to the base, reducing the lifting deviation of the lifting seat caused by wear of parts under long-term use, and being able to accurately dock the lifting seat to the external line body, with high precision and long service life, reducing maintenance frequency and improving production efficiency.

[0016] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the description, are used to explain the principles of the present application.

[0018] Figure 1 A structural front view of a lifting machine provided in an embodiment of the present application, wherein the lifting seat is at a second preset height position;

[0019] Figure 2 for Figure 1 A partial enlarged view of area A in the middle;

[0020] Figure 3 for Figure 1 A partial enlarged view of area B in the middle;

[0021] Figure 4 A structural front view of a lifting machine provided in an embodiment of the present application, wherein the lifting seat is at a first preset height position;

[0022] Figure 5 A structural diagram of a hoist provided in one embodiment of the present application;

[0023] Figure 6 A side view of a hoist provided in accordance with an embodiment of the present application.

[0024] The following are the descriptions of the reference numerals:

[0025] 100-base, 110-lifting seat, 111-lifting block, 112-first switching position, 113-second switching position, 120-swing rod, 121-follow-up wheel, 130-limiting member, 141-sensing block, 142-second sensor, 143-third sensor, 210-first abutting portion, 220-concave arc portion, 230-second abutting portion, 240-first sensor, 310-limiting seat, 320-limiting bolt, 330-first limiting nut, 411-connecting portion, 412-supporting portion, 413-roller, 511-positioning screw, 512-second limiting nut, 513-third limiting nut, 521-first clamping seat, 522-second clamping seat, 610-driving member, 620-fourth sensor, 630-third clamping seat. DETAILED DESCRIPTION

[0026] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these example embodiments are provided so that the description of this application will be more comprehensive and complete, and the concept of the example embodiments will be fully conveyed to those skilled in the art.

[0027] In the description of the utility model, all the connection relationships mentioned do not refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the utility model can be combined interchangeably without conflicting with each other.

[0028] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0029] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number, and "above", "below", "within" etc. are understood to include the number.

[0031] Reference Figure 1 and Figure 4 The utility model provides a hoist, which includes a base 100, a driving member 610, a swing rod 120 and a lifting seat 110. A follower wheel 121 is arranged on the swing rod 120. The swing rod 120 is connected to the driving member 610 and is arranged on the base 100. The swing rod 120 can rotate relative to the base 100 under the drive of the driving member 610, so that the follower wheel 121 performs an arc displacement movement; the lifting seat 110 is arranged on the base 100 and can move up and down relative to the base 100. A first abutting portion 210 and a concave arc portion 220 for abutting against the follower wheel 121 are provided on the lifting seat 110. The follower wheel 121 can perform an arc displacement movement by abutting against the first abutting portion 210 to drive the lifting seat 110 to move upward, and the follower wheel 121 can perform an arc displacement movement by abutting against the concave arc portion 220 to keep the lifting seat 110 at a first preset height position.

[0032] Figure 1The lifting seat 110 is located below the first preset height position, and the follower wheel 121 abuts against the first abutting portion 210. Figure 4 The lifting seat 110 is at a first preset height position, at which time the follower wheel 121 abuts against the concave arc portion 220. Specifically, the lifting seat 110 can enter the first preset height position for docking with the external line body. The lifting seat 110 is provided with a first abutting portion 210 and a concave arc portion 220. The pendulum can rotate relative to the base 100 under the drive of the driving member 610, so that the follower wheel 121 on the pendulum makes an arc displacement motion. The shape of the concave arc portion 220 fits the arc displacement motion trajectory of the follower wheel 121. The follower wheel 121 abuts against the first abutting portion 210 to drive the lifting seat 110 to move upward relative to the base 100. After the lifting seat 110 is lifted to the first preset height position, the follower wheel 121 abuts against the concave arc portion 220 to move. The utility model provides the concave arc portion 220 so that the follower wheel 121 for lifting the lifting seat 110 can keep the height of the lifting seat 110 unchanged when it abuts against any position in the concave arc portion 220, thereby ensuring the lifting accuracy of the lifting seat 110 relative to the base 100, and there is no need to require the rocker arm 120 to drive the follower wheel 121 to rotate to a precise angle, so that the rocker arm 120 can accurately connect the lifting seat 110 to the external line body within a certain angle range, thereby reducing the lifting deviation of the lifting seat 110 caused by the wear of parts under long-term use, improving the lifting accuracy of the lifting seat 110, and prolonging the service life, reducing the maintenance frequency, and improving production efficiency.

[0033] In this embodiment, the driving member 610 can be a motor, which is used to rotate and drive the rocker arm 120 to rotate relative to the base 100. The follower wheel 121 is rotatably connected to the rocker arm 120 to reduce the sliding friction between the follower wheel 121 and the lifting seat 110 when they abut against each other.

[0034] Further, see Figure 2 The first abutment portion 210 is a planar structure, the concave arc surface portion 220 is an arc groove structure, the first abutment portion 210 is connected to one side of the concave arc surface portion 220, and the rocker arm 120 can rotate and lift upward relative to the base 100, so that the follower wheel 121 abuts against the first abutment portion 210 and moves toward the direction close to the concave arc surface portion 220 to drive the lifting seat 110 to move upward.

[0035] Specifically, the follower wheel 121 rotates with the rocker arm 120 to perform an arc displacement motion. When the follower wheel 121 moves upward and abuts against the first abutment portion 210 on the plane, the follower wheel 121 can provide an upward thrust for the lifting seat 110, so that the lifting seat 110 moves upward relative to the base 100. The planar structure of the first abutment portion 210 is connected to one side of the arc groove of the concave arc surface portion 220. When the lifting seat 110 is lifted to a first preset height position, the follower wheel 121 enters the arc groove and abuts against the concave arc surface portion 220, so that when the follower wheel 121 abuts against any position in the concave arc surface portion 220, the height of the lifting seat 110 can be kept unchanged, thereby ensuring the lifting accuracy of the lifting seat 110 relative to the base 100. In fact, the planar structure of the first abutment portion 210 can be a horizontal plane, or an inclined plane. In addition, the first abutment portion 210 can also be a curved surface structure. In the present embodiment, the first abutment portion 210 is a horizontal plane, and the arc radius of the concave arc surface portion 220 matches the distance from the follower wheel 121 to the rotation center of the rocker rod 120. The first abutment portion 210 and the concave arc surface portion 220 are connected by rounded corners to improve the smoothness of the displacement of the lifting seat 110.

[0036] In this embodiment, a second abutment portion 230 for abutting against the follower wheel 121 is provided on the lifting seat 110. The follower wheel 121 can drive the lifting seat 110 to move downward by abutting against the second abutment portion 230 to make an arc displacement movement. The first abutment portion 210 and the second abutment portion 230 are respectively connected to the two sides of the concave arc surface portion 220, wherein: when the rocker arm 120 rotates in a clockwise circle, the first abutment portion 210 is located on the left side of the concave arc surface portion 220, and when the rocker arm 120 rotates in a counterclockwise circle, the first abutment portion 210 is located on the right side of the concave arc surface portion 220.

[0037] Specifically, the driving member 610 can drive the rocker arm 120 to rotate in a circle. By setting the concave arc portion 220 between the first abutting portion 210 and the second abutting portion 230, the follower wheel 121 is in contact with the first abutting portion 210 when it moves up in the circumferential direction, and the follower wheel 121 is in contact with the concave arc portion 220 at the highest point of the movement. When passing through the concave arc portion 220, the lifting seat 110 can maintain the first preset height position. After passing through the concave arc portion 220, the follower wheel 121 is in contact with the second abutting portion 230 when it moves down in the circumferential direction, so that the lifting seat 110 can realize the movement process of rising, maintaining at the first preset height position, and descending under the support of the follower wheel 121, thereby keeping the rocker arm 120 rotating in the same direction and improving the service life of the driving member 610.

[0038] In fact, the first abutting portion 210 and the second abutting portion 230 are planar structures, and the concave arc surface portion 220 is an arc-shaped groove. When the swing rod 120 rotates along the clockwise circumference, the first abutting portion 210 is located on the left side of the concave arc surface portion 220, and the second abutting portion 230 is located on the right side of the concave arc surface portion 220. When the swing rod 120 rotates along the counterclockwise circumference, the second abutting portion 230 is located on the left side of the concave arc surface portion 220, and the first abutting portion 210 is located on the right side of the concave arc surface portion 220. In addition, the driving member 610 can also only drive the swing rod 120 to perform a reciprocating arc displacement movement. After the follower wheel 121 abuts against the first abutting portion 210 and rises into the concave arc surface portion 220 under the rotation of the swing rod 120, the swing rod 120 can be driven by the driving member 610 to rotate in the opposite direction and abut against the first abutting portion 210 to descend, so that the lifting seat 110 falls.

[0039] In this embodiment, the rotation center of the swing rod 120 is vertically opposite to the concave arc surface 220. Specifically, correspondingly, the center of the motion trajectory of the follower wheel 121 can also be directly opposite to the concave arc surface 220 in the vertical direction. When the follower wheel 121 moves to the highest point under the rotation of the swing rod 120, it is ensured that the follower wheel 121 can abut against the concave arc surface 220 to maintain the height position of the lifting seat 110. The rotation center of the swing rod 120 is vertically opposite to the concave arc surface 220, which improves the stroke of controlling the vertical movement of the lifting seat 110. In some other embodiments, the rotation center of the swing rod 120 can also be staggered with the concave arc surface 220, as long as the curvature of the concave arc surface 220 matches the motion trajectory of the follower wheel 121, and it is ensured that when the follower wheel 121 abuts against the concave arc surface 220, the lifting seat 110 can be maintained at the first preset height position.

[0040] Furthermore, the center angle of the concave arc surface 220 is 30° to 40°. Specifically, the center angle of the concave arc surface 220 is greater than 30°, which increases the length of the motion trajectory of the follower wheel 121 against the concave arc surface 220, increases the fault tolerance, and makes it easier for the lifting seat 110 to remain at the first preset height position, further ensuring the lifting accuracy of the lifting seat 110 relative to the base 100, and reducing the lifting deviation of the lifting seat 110 caused by the wear of parts under long-term use. In addition, the center angle of the concave arc surface 220 is less than 40°, which can ensure the stroke length of the lifting seat 110 moving up and down, and improve the adaptability of the equipment to docking with external wire bodies of different heights. In this embodiment, the center angle of the concave arc surface 220 is 38°. In addition, the center angle of the concave arc surface 220 can be greater than 40° or less than 30°.

[0041] In this embodiment, the lifting machine further includes a first sensor 240, which is disposed on the lifting seat 110 and configured to sense the follower wheel 121 entering the concave arc surface portion 220. Specifically, when the follower wheel 121 enters the concave arc surface portion 220, the first sensor 240 can detect the follower wheel 121 abutting against the concave arc surface portion 220, so that the staff can determine whether the follower wheel 121 enters the concave arc surface portion 220, and further determine whether the lifting seat 110 enters the first preset height position, so as to ensure the precise docking of the lifting seat 110 with the external line body.

[0042] Combination Figure 1 In this embodiment, a limit member 130 is provided on the base 100, and the limit member 130 is located below the lifting seat 110. The limit member 130 is configured to be able to resist and support the lifting seat 110 after the swing arm 120 rotates downward until the elevator descends to the second preset height position, so as to separate the lifting seat 110 from the follower wheel 121.

[0043] Specifically, the lifting seat 110 has a second preset height corresponding to the low-position line body of the peripheral device, and can be used to dock with the low-position line body of the peripheral device. When the driving member 610 drives the swing rod 120 to rotate downward, the follower wheel 121 can abut against the first abutment portion 210 to move downward, so that the hoist as a whole gradually moves downward until the hoist reaches the second preset height position. The limiter 130 abuts and supports the lifting seat 110 to separate the lifting seat 110 and the follower wheel 121, so that the lifting seat 110 can be positioned at the second preset height position to achieve docking with the low-position line body of the peripheral device, so that the device can dock with peripheral line bodies of different heights. In addition, when the swing rod 120 rotates downward, the follower wheel 121 can abut against the second abutment portion 230 to move downward.

[0044] Further, see Figure 3 The limiting member 130 includes a limiting seat 310, a limiting bolt 320 and a first limiting nut 330. The limiting seat 310 is arranged on the base 100, the limiting bolt 320 is threadedly connected to the limiting seat 310, and the first limiting nut 330 is threadedly connected to the limiting bolt 320 and abuts against the bottom surface of the limiting seat 310.

[0045] Specifically, the limit bolt 320 extends in the up and down directions, and can abut against the top of the limit bolt 320 when the lifting seat 110 is located at the second preset height position. The staff can adjust the engagement position of the limit bolt 320 on the limit seat 310 according to the height of the low-position line body of different peripherals, and then adjust the second preset height position of the lifting seat 110 to ensure the precise positioning of the lifting seat 110, and realize the accurate positioning of the lifting machine of the present application at the high and low positions, and by locking the second limit nut 512 on the limit bolt 320 and abutting against the bottom surface of the limit seat 310, the limit bolt 320 can be locked on the limit seat 310 to reduce the displacement of the limit bolt 320. In addition, the positions of the limit seat 310, the limit bolt 320 and the first limit nut 330 can also be set according to the specific position of the equipment, and the limit member 130 can also be directly replaced by a positioning pin, a positioning block, etc. whose length can be adjusted through a clamping structure, as long as the contact height between the lifting seat 110 and the limit member 130 can be adjusted.

[0046] Further, combined with Figure 1 The lifting machine also includes a sensing block 141, a second sensor 142, a third sensor 143 and a controller. The sensing block 141 is arranged on the lifting seat 110. The second sensor 142 and the third sensor 143 are respectively arranged on the base 100 at intervals in the up and down directions. The second sensor 142 is configured to sense the sensing block 141. The third sensor 143 is configured to sense the sensing block 141. The controller is electrically connected to the second sensor 142, the third sensor 143 and the driving member 610 respectively. The controller is configured to control the output end of the driving member 610 to decelerate until it stops when the second sensor 142 senses the rising sensing block 141, and to control the output end of the driving member 610 to decelerate when the third sensor 143 senses the falling sensing block 141.

[0047] Specifically, the sensing block 141 is arranged on the lifting seat 110, and the second sensor 142 is higher than the third sensor 143. Through the recognition of the position of the sensing block 141 by the second sensor 142 and the third sensor 143, the controller can control the lifting seat 110 to slow down the output speed of the driving member 610 when it is about to rise to the first preset height position, thereby slowing down the lifting speed of the lifting seat 110. Similarly, it can also control the lifting seat 110 to slow down the descending speed of the lifting seat 110 when it is about to descend to a low position, slowly adapt to the height position of the external line body, reduce the emergency stop of the driving member 610, reduce the impact of parts, and improve the service life of the equipment.

[0048] In fact, the second sensor 142 and the third sensor 143 are located below the first preset height position and above the second preset height position. When the sensing block 141 enters the sensing range of the second sensor 142 upward, the lifting speed of the lifting seat 110 gradually slows down until the lifting seat 110 enters the first preset height position and stops driving the rocker arm 120, which is convenient for the transmission of the product between the lifting seat 110 and the external line body. When the sensing block 141 passes the second sensor 142 downward and enters the sensing range of the third sensor 143, the descending speed of the lifting seat 110 gradually slows down. After the lifting seat 110 is supported by the limit member 130, the lifting seat 110 stops descending, reducing the impact on the limit member 130. At this time, the driving member 610 can stop driving the rocker arm 120, which is convenient for the transmission of the product between the lifting seat 110 and the external line body.

[0049] Reference Figure 4 and Figure 5 The lifting seat 110 includes a connecting portion 411 and a supporting portion 412. The connecting portion 411 is slidably connected to the base 100 up and down. The supporting portion 412 is connected to the connecting portion 411 and mutually forms an L shape. A roller 413 is provided on the top surface of the supporting portion 412. Specifically, the roller 413 includes a plurality of rollers arranged side by side, which can be used to convey products. The supporting portion 412 supporting the roller 413 and the connecting portion 411 connected to the base 100 are arranged in an L shape, which increases the sliding connection area between the connecting seat and the base 100 and improves stability.

[0050] Reference Figure 1 and Figure 5 The lifting seat 110 includes a connecting portion 411 and a lifting block 111. The connecting portion 411 is slidably connected to the base 100 up and down. The connecting portion 411 has a first switching position 112 and a second switching position 113. The bottom surface of the lifting block 111 is provided with a concave arc portion 220 with an opening facing downward. The lifting block 111 is detachably connected to the connecting portion 411. The lifting block 111 can be selectively set at the first switching position 112 and the second switching position 113. The rocker arm 120 is detachably connected to the base 100 and is set corresponding to the position of the lifting block 111.

[0051] Specifically, a driving member 610 can be correspondingly provided at the first switching position 112 and the second switching position 113. When the driving member 610 at the first switching position 112 or the second switching position 113 fails, the staff can remove the lifting block 111 and the rocker arm 120 and install them on the other one for use. The corresponding lifting seat 110 is provided with a switching connection position of the lifting block 111, and the base 100 is provided with a switching connection position of the rocker arm 120, which ensures that when the driving member 610 at any one of the first switching position 112 and the second switching position 113 fails, the power source can be quickly switched, thereby reducing the risk of on-site line shutdown and ensuring production efficiency.

[0052] In this embodiment, the first switching position 112 and the second switching position 113 are distributed vertically on the connecting portion 411. This improves space utilization and facilitates reducing the design width of the lifting seat 110 and the base 100. In addition, the first switching position 112 and the second switching position 113 can also be distributed in the horizontal direction.

[0053] Reference Figure 5 and Figure 6 The present application also includes a positioning screw 511, a first clamping seat 521 is provided on one of the base 100 and the lifting seat 110, and a second clamping seat 522 is provided on the other, the first clamping seat 521 and the second clamping seat 522 are respectively distributed up and down, and the positioning screw 511 is provided with a second limiting nut 512 and a third limiting nut 513 at intervals up and down along its extension direction, the second limiting nut 512 is connected to the first clamping seat 521, and the third limiting nut 513 is connected to the second clamping seat 522.

[0054] Specifically, when the equipment needs to be repaired, the positioning screw 511 is adjusted on the positioning screw 511 by the second limiting nut 512 and the third limiting nut 513, and then the first clamping seat 521 and the second clamping seat 522 are respectively connected, so that the lifting seat 110 can be fixed on the base 100 to prevent the lifting seat 110 from falling and improve safety.

[0055] In fact, in this embodiment, the first clamping seat 521 is arranged on the base 100, and the second clamping seat 522 is arranged on the lifting seat 110. The first clamping seat 521 is located above the second clamping seat 522. When the equipment needs to be repaired, the positioning screw 511 passes through the first clamping seat 521 and the second clamping seat 522, and the bottom surface of the second limiting nut 512 is abutted against the top surface of the first clamping seat 521. The position of the third limiting nut 513 is adjusted so that the top surface of the third limiting nut 513 is abutted against the bottom surface of the second clamping seat 522, so that the lifting seat 110 can be suspended on the base 100. In addition, the first clamping seat 521 can also be set on the lifting seat 110, and the second clamping seat 522 can be set on the base 100, and the first clamping seat 521 can be located above the second clamping seat 522. When the equipment needs maintenance, the positioning screw 511 passes through the first clamping seat 521 and the second clamping seat 522, and the top surface of the second limiting nut 512 is against the bottom surface of the first clamping seat 521, and the bottom surface of the third limiting nut 513 is against the top surface of the second clamping seat 522. The lifting seat 110 can be supported on the base 100. The staff can adjust the positions of the first clamping seat 521, the second clamping seat 522, the second limiting nut 512 and the third limiting nut 513 through the specific structure of the equipment. The present application does not specifically limit the specific implementation method.

[0056] Reference Figure 6The present application also includes a fourth sensor 620 and a controller. A third card holder 630 is provided on the lifting seat 110. The third card holder 630 is provided with a card hole for inserting the positioning screw 511. The fourth sensor 620 is arranged on the third card holder 630 and is directly opposite to the card hole. The fourth sensor 620 is configured to sense the positioning screw 511 entering the card hole. The controller is electrically connected to the fourth sensor 620 and the driving member 610, and is configured to power on the driving member 610 when the fourth sensor 620 senses the positioning screw 511, otherwise the driving member 610 is powered off.

[0057] Specifically, when the elevator is operating normally, the staff installs the positioning screw 511 on the card hole of the third card seat 630, and the fourth sensor 620 can detect whether the positioning screw 511 is in place. When the positioning screw 511 is detected, the controller controls the driving member 610 to be energized, so that the rocker arm 120 can work. When the elevator equipment needs maintenance, the positioning screw 511 is removed, so that the fourth sensor 620 detects that the positioning screw 511 is removed, and the controller controls the driving member 610 to be powered off, so that the equipment cannot operate. At the same time, the staff can install the positioning screw 511 on the first card seat 521 and the second card seat 522 to prevent the lifting seat 110 from falling, thereby further improving safety.

[0058] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the utility model disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the appended claims.

Claims

1. A hoist, characterized in that: include: Pedestal; A driving member and a swing rod, wherein the swing rod is provided with a follower wheel, the swing rod is connected to the driving member and is provided on the base, and the swing rod can rotate relative to the base under the driving of the driving member so that the follower wheel performs an arc displacement motion; A lifting seat is arranged on the base and can move up and down relative to the base. The lifting seat is provided with a first abutting portion and a concave arc portion for abutting against the follower wheel. The follower wheel can drive the lifting seat to move upward by abutting against the first abutting portion, and the follower wheel can keep the lifting seat at a first preset height position by abutting against the concave arc portion.

2. The lifting machine according to claim 1, characterized in that: The first abutment portion is a planar structure, the concave arc surface portion is an arc-shaped groove structure, the first abutment portion is connected to one side of the concave arc surface portion, and the rocker arm can rotate and lift upward relative to the base so that the follower wheel abuts against the first abutment portion and moves toward the direction close to the concave arc surface portion to drive the lifting seat to move upward.

3. The hoist according to claim 1 or 2, characterized in that: The lifting seat is provided with a second abutment portion for abutting against the follower wheel, and the follower wheel can drive the lifting seat to move downward by abutting against the second abutment portion to make an arc displacement movement, and the first abutment portion and the second abutment portion are respectively connected to the two sides of the concave arc surface portion, wherein: when the swing rod rotates in a clockwise circle, the first abutment portion is located on the left side of the concave arc surface portion, and when the swing rod rotates in a counterclockwise circle, the first abutment portion is located on the right side of the concave arc surface portion; and / or The rotation center of the swing rod is vertically opposite to the concave arc surface; and / or The center angle of the concave arc portion is 30° to 40°; and / or The lifting machine further comprises a first sensor, which is disposed on the lifting seat and configured to sense the follower wheel entering the concave arc surface portion.

4. The lifting machine according to claim 1, characterized in that: A limiter is provided on the base, and the limiter is located below the lifting seat. The limiter is configured to be able to resist and support the lifting seat after the swing arm rotates downward until the elevator descends to a second preset height position, so that the lifting seat is separated from the follower wheel.

5. The lifting machine according to claim 4, characterized in that: The limiting member includes a limiting seat, a limiting bolt and a first limiting nut. The limiting seat is arranged on the base. The limiting bolt is threadedly connected to the limiting seat. The first limiting nut is threadedly connected to the limiting bolt and abuts against the bottom surface of the limiting seat.

6. The lifting machine according to claim 1, characterized in that: The lifting machine further comprises a sensing block, a second sensor, a third sensor and a controller, wherein the sensing block is arranged on the lifting seat, the second sensor and the third sensor are respectively arranged on the base at intervals in the up-down direction, the second sensor is configured to sense the sensing block, the third sensor is configured to sense the sensing block, the controller is respectively electrically connected to the second sensor, the third sensor and the driving member, and the controller is configured to control the output end of the driving member to decelerate until it stops when the second sensor senses the rising sensing block, and to control the output end of the driving member to decelerate when the third sensor senses the falling sensing block; and / or The lifting seat comprises a connecting part and a supporting part, the connecting part is slidably connected to the base up and down, the supporting part is connected to the connecting part and mutually forms an L shape, and a roller is arranged on the top surface of the supporting part.

7. The lifting machine according to claim 1, characterized in that: The lifting seat includes a connecting part and a lifting block, the connecting part is slidably connected to the base up and down, the connecting part has a first switching position and a second switching position, the bottom surface of the lifting block is provided with the concave arc portion with the opening facing downward, the lifting block is detachably connected to the connecting part, the lifting block can be selectively set at the first switching position and the second switching position, the rocker arm is detachably connected to the base and is set corresponding to the position of the lifting block.

8. The lifting machine according to claim 7, characterized in that: The first switching position and the second switching position are distributed vertically on the connecting portion.

9. The lifting machine according to claim 1, characterized in that: Also includes: A positioning screw, a first clamping seat is provided on one of the base and the lifting seat, and a second clamping seat is provided on the other, the first clamping seat and the second clamping seat are respectively distributed up and down, and a second limiting nut and a third limiting nut are respectively spaced apart up and down on the positioning screw along its extension direction, the second limiting nut is connected to the first clamping seat, and the third limiting nut is connected to the second clamping seat.

10. The lifting machine according to claim 9, characterized in that: Also includes: A fourth sensor, wherein the lifting seat is provided with a third clamping seat, the third clamping seat is provided with a clamping hole for the positioning screw to be inserted, the fourth sensor is arranged on the third clamping seat and directly faces the clamping hole, and the fourth sensor is configured to sense the positioning screw entering the clamping hole; The controller is electrically connected to the fourth sensor and the driving member, and is configured to energize the driving member when the fourth sensor senses the positioning screw, and to de-energize the driving member otherwise.

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