Low-resistance steel wire rope electric hoist
By designing the locking mechanism and the limiter in the electric hoist, the problem of insufficient load bearing of the limiter is solved, the safety and applicability of the electric hoist when lifting heavy objects is improved, and a more stable lifting effect is achieved. .
Patent Information
- Application Number
- CN202421147473.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-24
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-24
AI Technical Summary
When lifting objects with higher weight, the limiter's load-bearing capacity is insufficient, which poses safety risks and reduces the applicability of the equipment.
A low-resistance wire rope electric hoist is designed, using the locking mechanism and the limiter inside the motor to cooperate with each other. Through the meshing mechanism of arc-shaped grooves and gears, the locking and limiting of the gears is achieved, which improves safety and reliability.
It effectively improves the safety and applicability of the electric hoist when lifting heavy objects, avoids objects falling due to motor suspension, and improves the stability and lifting ability of the equipment.
Smart Images
Figure CN222273973U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of electric hoists, and in particular to a low-resistance wire rope electric hoist. Background Art
[0002] An electric hoist is a small lifting equipment that integrates an electric motor, a reducer and a wire rope drum or a chain. Existing electric hoists are generally equipped with a torque limiting device. When the load lifted by the electric hoist exceeds the upper limit of the use of the electric hoist, the torque limiting device limits the lifting of the electric hoist by slipping, which can effectively avoid overloading of the electric hoist and ensure the safety of the electric hoist during the lifting process.
[0003] By tying a lifting rope on the object to be lifted, and then hanging the top of the lifting rope on the hook, the motor drives the steel rope to be reeled in to directly lift the object, and then the pulley set on the track is slid through the top of the electric hoist to move the electric hoist parallel to the left and right, and finally the motor drives the steel rope to unwind and put the object down. Some electric hoists have a relatively simple structure. After the object is lifted to a certain height, it is necessary to limit it through the limiter inside the motor to ensure that the object will not be temporarily stopped due to the temporary stop of the motor, causing the gravity of the object to drive the steel rope roller on the electric hoist to rotate, thereby causing the object to fall to the ground and cause damage to the object. However, the load-bearing capacity of the limiter is limited. When limiting some heavy objects with higher weight, the weight is likely to exceed the load-bearing capacity of the limiter, thereby posing certain safety hazards and reducing the applicability of the electric hoist. Therefore, those skilled in the art provide a low-resistance wire rope electric hoist to solve the problems raised in the above background technology. Utility Model Content
[0004] The purpose of the utility model is to provide a low-resistance wire rope electric hoist to solve the problem that the load-bearing capacity of the limiter proposed in the above background technology is limited. When limiting some heavy objects with higher weight, the weight is likely to exceed the load-bearing capacity of the limiter, thereby posing certain safety hazards and reducing the applicability of the electric hoist.
[0005] The low resistance wire rope electric hoist provided in this application adopts the following technical solution:
[0006] A low-resistance wire rope electric hoist comprises an electric hoist body and a first motor for driving the electric hoist body, two gears are installed on one side of the electric hoist body, and the two gears are fixedly connected to the output shaft of the first motor, a mounting plate is fixedly installed on one side of the bottom of the electric hoist body, and a locking mechanism is movably installed on one side of the mounting plate, and the locking mechanism is used to limit the two gears; the locking mechanism comprises two sliding bars, two first connecting plates are fixedly installed between the two sliding bars, second connecting plates are installed on both sides between the two first connecting plates, and limiting assemblies are movably installed on the inner sides of the two first connecting plates, the two limiting assemblies are respectively used to mesh with the two gears to limit the gears, and a driving assembly is installed in the middle of the bottom end of one of the first connecting plates, and the driving assembly is used to drive the sliding bar to drive the first connecting plate to move upward so that the limiting assembly meshes with the gear.
[0007] Preferably, first sliding grooves are provided on both sides of the mounting plate, and one end of the two sliding rods are slidably mounted in the two first sliding grooves respectively.
[0008] Preferably, the two limiting assemblies each comprise a limiting plate, the limiting plate is movably connected to the first connecting plate, and an arc-shaped tooth groove is formed on the limiting plate.
[0009] Preferably, second sliding grooves are provided on both sides of the first connecting plate, a sliding block is slidably installed in the second sliding groove, and one end of the sliding block is fixedly connected to one side of the limiting plate.
[0010] Preferably, a movable groove is provided in the middle of the sliding block, a limit rod is movably installed in the movable groove, and a spring is sleeved on the outer side of the limit rod.
[0011] Preferably, two ends of the spring are fixedly connected to the bottom end of the slider and the bottom end of the second slide groove respectively, and a limiting block is fixedly installed on the top end of the limiting rod.
[0012] Preferably, the tooth grooves in the two arc-shaped tooth grooves are arranged in a staggered manner, the tooth blocks on the two gears are arranged in a staggered manner, and the two arc-shaped tooth grooves are respectively arranged in a state of mutual meshing with the two gears.
[0013] Preferably, the driving assembly includes a second motor and a screw, one side of the end of the second motor is fixedly connected to the bottom end of the mounting plate, the screw is threadedly connected to the first connecting plate, and one end of the screw is fixedly connected to the output shaft of the second motor, and the other end of the screw is fixedly connected to the bottom end of the electric hoist body.
[0014] In summary, this application includes the following beneficial technical effects:
[0015] The locking mechanism is set up to facilitate the locking of the first motor, and the second motor is driven. The second motor drives the first connecting plate to move upward in the first slide slot through the screw, so that an arc-shaped tooth groove is meshed with a gear, and the arc surface of another arc-shaped tooth groove contacts the outer side of another gear, thereby pushing the slider to move downward in the second slide slot, pushing the spring, and completing the locking. After releasing the locked first motor, the elastic force of the spring can push the slider to move upward in the second slide slot, so that the two limit plates are reset, which is convenient for the next locking. The drive of the second motor can always make an arc-shaped tooth groove mesh with a gear, thereby locking the gear, so that after the electric hoist lifts the weight to a certain height, the locking mechanism and the limiter inside the motor can cooperate with each other, thereby improving safety and reliability, and improving the applicability of the electric hoist. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0017] Figure 1 It is a structural schematic diagram of a low-resistance wire rope electric hoist in an embodiment of the present application;
[0018] Figure 2 It is a structural schematic diagram of a first chute and a second chute of a low-resistance electric wire rope hoist in an embodiment of the present application;
[0019] Figure 3 It is a structural schematic diagram of a limit plate of a low-resistance wire rope electric hoist in an embodiment of the present application;
[0020] Figure 4 It is a structural schematic diagram of an arc-shaped tooth groove of a low-resistance electric wire rope hoist in an embodiment of the present application;
[0021] Figure 5 It is a front view of a low-resistance electric wire rope hoist in an embodiment of the present application.
[0022] Explanation of the accompanying drawings: 1. Electric hoist body; 2. First motor; 3. Gear; 4. Mounting plate; 5. Slide rod; 6. First connecting plate; 7. Second connecting plate; 8. First slide groove; 9. Limit plate; 10. Arc tooth groove; 11. Second slide groove; 12. Slider; 13. Limit rod; 14. Spring; 15. Limit block; 16. Second motor; 17. Screw. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.
[0024] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0025] The following is combined with Figure 1-5 This application is described in further detail.
[0026] The present application embodiment discloses a low resistance wire rope electric hoist, referring to Figure 1-5 , including an electric hoist body 1 and a first motor 2 for driving the electric hoist body 1, two gears 3 are installed on one side of the electric hoist body 1, and the two gears 3 are fixedly connected to the output shaft of the first motor 2, a mounting plate 4 is fixedly installed on one side of the bottom of the electric hoist body 1, and a locking mechanism is movably installed on one side of the mounting plate 4, and the locking mechanism is used to limit the two gears 3; the locking mechanism includes two sliding rods 5, two first connecting plates 6 are fixedly installed between the two sliding rods 5, and second connecting plates 7 are installed on both sides between the two first connecting plates 6. Limiting components are movably installed on the inner sides of the two first connecting plates 6, and the two limiting components are respectively used to mesh with the two gears 3 to limit the gears 3, and a driving component is installed in the middle of the bottom end of a first connecting plate 6, and the driving component is used to drive the sliding rod 5 to drive the first connecting plate 6 to move upward so that the limiting component meshes with the gear 3.
[0027] By adopting the above technical solution, the utility model is convenient to lock the first motor 2 by setting the locking mechanism, driving the second motor 16, and the second motor 16 drives the first connecting plate 6 to move upward in the first slide groove 8 through the screw 17, so that an arc-shaped tooth groove 10 is meshed with a gear 3, and the arc surface of another arc-shaped tooth groove 10 is in contact with the outer side of another gear 3, thereby pushing the slider 12 to move downward in the second slide groove 11, pushing the spring 14, and completing the locking. After releasing the locked first motor 2, the elastic force of the spring 14 can push the slider 12 to move upward in the second slide groove 11, so that the two limit plates 9 are reset, which is convenient for the next locking. The driving of the second motor 16 can always make an arc-shaped tooth groove 10 mesh with a gear 3, thereby locking the gear 3, so that after the electric hoist lifts the heavy object to a certain height, the locking mechanism and the limiter inside the motor in the electric hoist are used in conjunction with each other, thereby improving safety and reliability, and improving the applicability of the electric hoist.
[0028] Reference Figure 1 , Figure 2 and Figure 3 First slide grooves 8 are provided on both sides of the mounting plate 4, and one end of the two slide rods 5 is slidably mounted in the two first slide grooves 8 respectively.
[0029] By adopting the above technical solution, it is convenient to move one end of the two sliding rods 5 in the two first sliding grooves 8, thereby facilitating the movement of the two first connecting plates 6, and also being able to limit the movement of the two first connecting plates 6.
[0030] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The two limiting components both include a limiting plate 9 , which is movably connected to the first connecting plate 6 , and an arc-shaped tooth groove 10 is formed on the limiting plate 9 .
[0031] By adopting the above technical solution, the arc-shaped tooth groove 10 is meshed with a gear 3 to lock the first motor 2, thereby avoiding the need to fix the object through continuous output of the motor after it is lifted to a certain height, thereby wasting a large amount of electricity resources and increasing the cost of using the electric hoist.
[0032] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 A second slide groove 11 is provided on both sides of the first connecting plate 6 , a slider 12 is slidably installed in the second slide groove 11 , and one end of the slider 12 is fixedly connected to one side of the limiting plate 9 .
[0033] By adopting the above technical solution, the slider 12 can move in the second slide groove 11, so that after an arc-shaped tooth groove 10 is meshed with a gear 3, the other gear 3 pushes the limit plate 9 downward, so that the limit plate 9 can move downward.
[0034] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 A movable groove is provided in the middle of the slider 12, and a limit rod 13 is movably installed in the movable groove. A spring 14 is sleeved on the outer side of the limit rod 13.
[0035] By adopting the above technical solution, the limit rod 13 can improve the stability of the slider 12 when it moves, and through the spring 14, after the arc-shaped tooth groove 10 is disengaged from the gear 3, the elastic force of the spring 14 can push an arc-shaped tooth groove 10 upward, thereby resetting the limit plate 9.
[0036] Reference Figure 1 , Figure 3 , Figure 4 and Figure 5 The two ends of the spring 14 are fixedly connected to the bottom end of the slider 12 and the bottom end of the second slide groove 11 respectively, and the top end of the limiting rod 13 is fixedly installed with a limiting block 15.
[0037] By adopting the above technical solution, it is possible to prevent the elastic force of the spring 14 from pushing the limit plate 9 and the slider 12 out of the second slide groove 11, and the movable range of the limit plate 9 can be limited.
[0038] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The tooth grooves in the two arc-shaped tooth grooves 10 are arranged in a staggered manner, the tooth blocks on the two gears 3 are arranged in a staggered manner, and the two arc-shaped tooth grooves 10 are respectively arranged to mesh with the two gears 3.
[0039] By adopting the above technical solution, the drive of the second motor 16 can always make an arc-shaped tooth groove 10 mesh with a gear 3, thereby locking the gear 3, avoiding the need to fix the object through continuous output of the motor after it is lifted to a certain height.
[0040] Reference Figure 1 , Figure 2 , Figure 3 and Figure 5The driving assembly includes a second motor 16 and a screw 17. One side of the end of the second motor 16 is fixedly connected to the bottom end of the mounting plate 4. The screw 17 is threadedly connected to the first connecting plate 6. One end of the screw 17 is fixedly connected to the output shaft of the second motor 16. The other end of the screw 17 is fixedly connected to the bottom end of the electric hoist body 1.
[0041] By adopting the above technical solution, it is convenient to drive the second motor 16, and the second motor 16 drives the first connecting plate 6 to move upward in the first slide groove 8 through the screw 17, so that an arcuate tooth groove 10 is meshed with a gear 3, and the arc surface of the other arcuate tooth groove 10 is in contact with the outer side of the other gear 3, thereby pushing the sliding block 12 to move downward in the second slide groove 11, pushing the spring 14, and completing the locking.
[0042] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.
[0043] The utility model is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.
Claims
1. A low-resistance wire rope electric hoist, comprising an electric hoist body (1) and a first motor (2) for driving the electric hoist body (1), characterized in that: Two gears (3) are installed on one side of the electric hoist body (1), and the two gears (3) are fixedly connected to the output shaft of the first motor (2); a mounting plate (4) is fixedly installed on one side of the bottom of the electric hoist body (1), and a locking mechanism is movably installed on one side of the mounting plate (4), and the locking mechanism is used to limit the two gears (3); The locking mechanism comprises two slide bars (5), two first connecting plates (6) are fixedly installed between the two slide bars (5), second connecting plates (7) are installed on both sides between the two first connecting plates (6), and limiting components are movably installed on the inner sides of the two first connecting plates (6), and the two limiting components are respectively used to engage with the two gears (3) to limit the gears (3), and a driving component is installed in the middle of the bottom end of one of the first connecting plates (6), and the driving component is used to drive the slide bar (5) to drive the first connecting plate (6) to move upward so that the limiting component engages with the gear (3).
2. A low resistance electric wire rope hoist according to claim 1, characterized in that: First sliding grooves (8) are provided on both sides of the mounting plate (4), and one end of the two sliding rods (5) are respectively slidably mounted in the two first sliding grooves (8).
3. The low resistance electric wire rope hoist according to claim 1, characterized in that: The two limiting assemblies each comprise a limiting plate (9), the limiting plate (9) being movably connected to the first connecting plate (6), and an arc-shaped tooth groove (10) being formed on the limiting plate (9).
4. A low resistance electric wire rope hoist according to claim 3, characterized in that: Second sliding grooves (11) are provided on both sides of the first connecting plate (6), a sliding block (12) is slidably installed in the second sliding groove (11), and one end of the sliding block (12) is fixedly connected to one side of the limiting plate (9).
5. The low resistance electric wire rope hoist according to claim 4, characterized in that: A movable groove is provided in the middle of the sliding block (12), a limit rod (13) is movably installed in the movable groove, and a spring (14) is sleeved on the outer side of the limit rod (13).
6. A low resistance electric wire rope hoist according to claim 5, characterized in that: The two ends of the spring (14) are respectively fixedly connected to the bottom end of the slider (12) and the bottom end inside the second slide groove (11), and the top end of the limiting rod (13) is fixedly mounted with a limiting block (15).
7. The low resistance electric wire rope hoist according to claim 3, characterized in that: The tooth grooves in the two arc-shaped tooth grooves (10) are arranged in a mutually staggered manner, the tooth blocks on the two gears (3) are arranged in a mutually staggered manner, and the two arc-shaped tooth grooves (10) are respectively arranged in a mutually meshing manner with the two gears (3).
8. The low resistance electric wire rope hoist according to claim 1, characterized in that: The driving assembly comprises a second motor (16) and a screw rod (17), one side of the end of the second motor (16) is fixedly connected to the bottom end of the mounting plate (4), the screw rod (17) is threadedly connected to the first connecting plate (6), one end of the screw rod (17) is fixedly connected to the output shaft of the second motor (16), and the other end of the screw rod (17) is fixedly connected to the bottom end of the electric hoist body (1).