Electric hoist convenient to fix

Abstract

The utility model discloses an electric hoist convenient to fix, and relates to the technical field of electric hoists. The electric hoist convenient to fix comprises an electric hoist body, the electric hoist body is composed of a cross beam and a chain box, a chain fixing unit and a sliding way limiting unit are arranged in the electric hoist body, the chain fixing unit is installed in the chain box and comprises a driving motor, and the driving motor is connected with a chain cylinder through a coupler. A chain is wound on the chain cylinder, fixing frames are arranged at the two ends of the chain box, and limiting grooves are formed in the two fixing frames. The clamping arc plates capable of sliding in the chain fixing units move in the limiting grooves, the chain is pushed out of the inner wall of the chain barrel, so that the situation that the winding state of the chain is suddenly relieved when the chain is lifted is avoided, the chain barrel is wrapped by the torque limiting plates, the situation that the chain barrel rotates due to inertia caused by torque inertia after a driving motor stops is avoided, and the chain barrel cannot be damaged is avoided. Therefore, the electric hoist can be conveniently fixed during operation.

Description

Technical Field

[0001] The utility model relates to the technical field of electric hoists, in particular to an electric hoist convenient for fixing. Background Technique

[0002] An electric hoist is a special lifting device installed on overhead cranes and gantry cranes. The electric hoist has the characteristics of small volume, light self-weight, simple operation and convenient use, and is used in industrial and mining enterprises, warehousing, docks and other places.

[0003] Generally, when the commonly used electric hoist is installed, the first hook is directly hung on the sliding cable without a fixing structure, so that the first hook is easy to fall off the sliding cable during use, and after the object is lifted, the object is easy to fall off the second hook when swinging in the air.

[0004] As disclosed in an electric hoist convenient for fixing with the Chinese patent publication number CN209890101U, the electric hoist is provided with a threaded rod, a clamping plate and a limiting block. After the first hook is hung under the sliding cable, the threaded rod is rotated to use the clamping plate to fix both sides of the first hook to prevent the first hook from shifting. The limiting block above the clamping plate can prevent the first hook from falling off the sliding cable. A spring and a movable rod are provided. When the pull plate is pulled outward to make the movable rod move to the right, the spring is stretched. After the baffle is clamped into the first clamping groove on the fixed block, the pull plate is released, and the spring restores deformation to make the movable rod snap into the second clamping groove on the baffle to fix the baffle.

[0005] First of all, when the above-mentioned electric hoist swings in the air, the corresponding limiting mechanism provided on the hook is used to ensure the stable suspension of the object. However, the overall suspended object still presents a swinging state relative to the fixed electric hoist. Therefore, there is a risk that the sudden release of the winding state of the front suspension chain of the lifted object in the chain box will occur. Therefore, the sudden short-term drop of the object in this case will cause certain safety risks. Content of the Utility Model

[0006] Aiming at the deficiencies of the prior art, the utility model provides an electric hoist convenient for fixing, which solves the problems put forward in the above background technique.

[0007] To achieve the above purposes, the utility model is realized through the following technical solutions: An electric hoist convenient for fixing, including an electric hoist main body, the electric hoist main body is composed of a cross beam, a chain box and a speed change component, a chain fixing unit and a slideway limiting unit are arranged inside the electric hoist main body, the chain fixing unit is installed in the chain box, and the slideway limiting unit is installed at the cross beam;

[0008] The chain fixing unit includes a driving motor, which is installed on one side of the chain box and connected to a chain barrel through a coupling. A chain is wound around the chain barrel. Open mounting areas are provided at both ends of the chain box. Fixed frames are symmetrically fixed at the left and right ends of the open mounting areas. Limiting grooves are provided inside the two fixed frames. A positioning arc plate is fixedly installed at one end of the limiting groove, and a clamping arc plate is limited and slidably provided at the other end of the limiting groove.

[0009] As can be seen from the attached figure, one end of the chain hangs out from the limit slot in the fixed frame. Therefore, when the drive motor drives the chain barrel to rotate to complete the descent and rise of the chain, the chain is gradually released from the end away from the drive motor to the end close to the drive motor. During this process, if the chain height is sufficient and the chain in the electric hoist body needs to be limited, its slidable clamping arc plate moves in the limit slot, pushing the chain to the inner wall of the chain barrel, and clamping the chain for limit.

[0010] The further improvement of the technical solution of the utility model is that: the driving motor is fixedly installed on the chain box, and the two fixed frames are fixedly welded to the chain box, the two fixed frames are welded to the corresponding positioning arc plates through the limit grooves, and the two fixed frames are slidably connected to the clamping arc plates through the limit grooves.

[0011] The further improvement of the technical solution of the utility model is that a fixed plate is fixedly installed between the top of the two fixed frames and the chain box, and each of the fixed plates is horizontally arranged with a sliding push rod, and multiple groups of push rods on the same side are fixedly connected to the torque limit plate.

[0012] After the chain is clamped by the clamping arc plate, in order to prevent the chain barrel from rotating inertially due to the torque inertia after the drive motor stops, multiple push rods will wrap the torque limit plate around the chain barrel to clamp the chain barrel to prevent the chain barrel from rotating inertially;

[0013] From the above, it can be known that the utility model moves the slidable clamping arc plate in the chain fixing unit in the limiting groove, pushes the chain to the inner wall of the chain barrel, and clamps the chain to prevent the chain from being suddenly released during lifting, and prevents the objects from falling briefly. The torque limiting plate completes the wrapping of the chain barrel, and prevents the chain barrel from rotating inertially due to the torque inertia after the drive motor stops, so as to facilitate the fixation of the electric hoist during operation.

[0014] A further improvement of the technical solution of the utility model is that arc-shaped connecting blocks are welded on the outer sides of the positioning arc plate and the clamping arc plate on the same side, electric push rods are passed through the two arc-shaped connecting blocks, and the electric push rods are limitedly connected to the corresponding arc-shaped connecting blocks, and the end of the chain away from the chain box is located in the rotating wheel, and the rotating wheel is fixedly connected to the hook through a connecting piece.

[0015] A further improvement of the technical solution of the present utility model lies in that: the slideway limiting unit includes a slide rail installed on one side of the speed change assembly. A slide seat is fixedly arranged in the slide rail. Magnetic attraction grooves are arranged at both ends of the slide seat. Magnetic attraction blocks are symmetrically arranged in the two magnetic attraction grooves. An insertion plate is welded to the bottom of one of the magnetic attraction blocks, and a through block installed with a cross bar is welded to the bottom of the other magnetic attraction block. One end of the cross bar is limited and inserted into the insertion plate, and a plurality of insertion ports are arranged in an array on the outer connecting rod of the cross bar.

[0016] The slide rail is placed upside down on the corresponding cable seat. The slide seat in the slide rail fits with the cable seat. A corresponding through hole for the hydraulic push rod to penetrate is opened in the middle of the cable seat. It should be noted that during the sliding process of the slide rail and the slide seat on the cable seat, the insertion plate and the cross bar at the bottom are inserted and connected. Therefore, when fixing the slide rail, the hydraulic push rod descends to the insertion port in the cross bar, thereby completing the limitation of the slide rail and the slide seat.

[0017] Therefore, in the present utility model, through the sliding limiting unit, when the electric hoist is operating, after the chain and the hook reach the corresponding positions, the hydraulic push rod and the insertion port complete the clamping of the slide seat and the slide rail, avoiding sudden displacement during the lifting process of the electric hoist and ensuring the fixation of the electric hoist in the horizontal position.

[0018] A further improvement of the technical solution of the present utility model lies in that: a hydraulic push rod is arranged on the top of the slide rail, and the hydraulic push rod penetrates through the slide rail into the insertion port. The cable seat matching the slide rail is provided with a through hole linked with the hydraulic push rod.

[0019] Beneficial effects

[0020] The present utility model provides an electric hoist that is convenient to fix. Compared with the prior art, it has the following

[0021] Beneficial effects:

[0022] 1. For the electric hoist that is convenient to fix, through the movable clamping arc plate in the chain fixing unit moving in the limiting groove, the chain is pushed to the inner wall of the chain barrel, and the chain is limited and clamped, thereby avoiding the sudden release of the winding state of the chain during lifting and preventing the item from having a short-term drop. And the torque limiting plate completes the wrapping of the chain barrel, avoiding the inertial rotation of the chain barrel due to the torque inertia after the driving motor stops, thereby facilitating the fixation during the operation of the electric hoist.

[0023] 2. For the electric hoist that is convenient to fix, through the sliding limiting unit, when the electric hoist is operating, after the chain and the hook reach the corresponding positions, the hydraulic push rod and the insertion port complete the clamping of the slide seat and the slide rail, avoiding sudden displacement during the lifting process of the electric hoist and ensuring the fixation of the electric hoist in the horizontal position. Description of the drawings

[0024] Figure 1 It is a schematic structural diagram of the whole utility model;

[0025] Figure 2 It is a schematic diagram of the chain fixing unit of the utility model;

[0026] Figure 3 It is a schematic diagram of the chain fixing unit of the utility model;

[0027] Figure 4 It is a schematic structural diagram of the slideway limiting unit of the utility model.

[0028] In the figure: 101, cross beam; 102, chain box; 103, speed change component; 201, driving motor; 202, chain barrel; 203, chain; 204, fixing frame; 205, limiting groove; 206, positioning arc plate; 207, clamping arc plate; 208, fixing plate; 209, push rod; 210, torque limiting plate; 211, arc connecting block; 212, electric push rod; 213, connecting hook; 214, transfer wheel; 301, slide rail; 302, slide seat; 303, magnetic attraction groove; 304, magnetic attraction block; 305, insertion plate; 306, cross bar; 307, access block; 308, insertion port; 309, hydraulic push rod. Specific embodiments

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0030] Refer to Figures 1 - 4 , the present utility model provides 3 technical solutions:

[0031] Embodiment 1:

[0032] A conveniently fixed electric hoist, including an electric hoist main body, the electric hoist main body is composed of a cross beam 101, a chain box 102 and a speed change component 103. A chain fixing unit and a slideway limiting unit are arranged inside the electric hoist main body. The chain fixing unit is installed in the chain box 102, and the slideway limiting unit is installed at the cross beam 101;

[0033] The chain fixing unit includes a driving motor 201, which is installed on one side of the chain box 102, and the driving motor 201 is connected to the chain barrel 202 through a coupling, and the chain barrel 202 is wound with a chain 203. The chain box 102 has an open installation area at both ends, and fixed frames 204 are symmetrically fixed at the left and right ends of the open installation area. The two fixed frames 204 are both provided with limiting grooves 205 inside, and a positioning arc plate 206 is fixedly installed at one end of the limiting groove 205, and a clamping arc plate 207 is limited and slidably provided at the other end of the limiting groove 205.

[0034] In this embodiment, as can be seen from the attached drawings, one end of the chain 203 hangs and falls through the limit groove 205 in the fixed frame 204. Therefore, when the drive motor 201 drives the chain barrel 202 to rotate and complete the descent and rise of the chain 203, the chain 203 is gradually released from the end away from the drive motor 201 to the end close to the drive motor 201. During this process, if the height of the chain 203 is sufficient and the chain 203 in the electric hoist body needs to be limited, its slidable clamping arc plate 207 moves in the limit groove 205, pushes the chain 203 to the inner wall of the chain barrel 202, and clamps the chain 203.

[0035] The driving motor 201 is fixedly mounted on the chain box 102, and the two fixed frames 204 are fixedly welded to the chain box 102. The two fixed frames 204 are welded to the corresponding positioning arc plates 206 through the limiting grooves 205. The two fixed frames 204 are slidably connected to the clamping arc plates 207 through the limiting grooves 205.

[0036] Example 2:

[0037] Based on the first embodiment: a fixed plate 208 is fixedly installed between the top of the two fixed frames 204 and the chain box 102, and a sliding push rod 209 is arranged horizontally in an array on each fixed plate 208, and multiple groups of push rods 209 on the same side are fixedly connected to the torque limit plate 210.

[0038] From the above embodiment, it can be known that after the chain 203 is clamped and stuck by the clamping arc plate 207, in order to prevent the chain barrel 202 from rotating inertially due to the torque inertia after the driving motor 201 stops, the multiple push rods 209 limit the torque limit plate 210 and wrap it around the chain barrel 202, and after the chain barrel 202 is clamped, the chain barrel 202 is prevented from rotating inertially;

[0039] As can be seen from the above, in the present utility model, the slidable clamping arc plate 207 in the chain fixing unit moves in the limit groove 205, pushes the chain 203 to the inner wall of the chain barrel 202, and limits and clamps the chain 203, thereby preventing the winding state of the chain from suddenly being released during lifting, avoiding a short-term drop of the object, and the torque limiting plate 210 completes the wrapping of the chain barrel 202, preventing the chain barrel 202 from rotating inertia due to the torque inertia after the driving motor 201 stops, thus facilitating the fixing during the operation of the electric hoist.

[0040] Arc-shaped connecting blocks 211 are welded on the outer sides of the same-side positioning arc plate 206 and the clamping arc plate 207. An electric push rod 212 is passed through the two arc-shaped connecting blocks 211. The electric push rod 212 is connected to the corresponding arc-shaped connecting block 211 in a limiting manner. One end of the chain 203 away from the chain box 102 is located in the transfer wheel 214, and the transfer wheel 214 is fixedly connected to the hook 213 through a connecting piece.

[0041] Embodiment 3:

[0042] Based on Embodiment 1 and Embodiment 2: The slideway limiting unit includes a slide rail 301 installed on one side of the speed change assembly 103. A slide seat 302 is fixedly arranged in the slide rail 301. Magnetic attraction grooves 303 are arranged at both ends of the slide seat 302. Magnetic attraction blocks 304 are symmetrically arranged in the two magnetic attraction grooves 303. An insertion plate 305 is welded to the bottom of one of the magnetic attraction blocks 304, and a through block 307 with a cross bar 306 installed is welded to the bottom of the other magnetic attraction block 304. One end of the cross bar 306 is inserted into the insertion plate 305 in a limiting manner, and a plurality of insertion openings 308 are arranged in an array on the outer connecting rod of the cross bar 306.

[0043] In this embodiment, the slide rail 301 is placed upside down on the corresponding cable seat. The slide seat 302 in the slide rail 301 fits with the cable seat, and a corresponding through hole for the hydraulic push rod 309 to pass through is opened in the middle of the cable seat. It should be noted that during the sliding of the slide rail 301 and the slide seat 302 on the cable seat, the insertion plate 305 at the bottom and the cross bar 306 are inserted and connected. Therefore, when fixing the slide rail 301, the hydraulic push rod 309 descends to the insertion opening 308 in the cross bar 306, thereby completing the limitation of the slide rail 301 and the slide seat 302.

[0044] Therefore, in the present utility model, through the sliding limiting unit, when the electric hoist is operating, after the chain 203 and the hook 213 reach the corresponding positions, the hydraulic push rod 309 and the insertion opening 308 complete the locking of the slide seat 302 and the slide rail 301, preventing the sudden displacement of the electric hoist during the lifting process and ensuring the fixing of the electric hoist in the horizontal position.

[0045] A hydraulic push rod 309 is provided at the top of the slide rail 301, and the hydraulic push rod 309 penetrates through the slide rail 301 into the insertion port 308. A through port linked with the hydraulic push rod 309 is provided on the cable seat matching the slide rail 301.

[0046] Meanwhile, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used.

[0047] During use, the slide rail 301 is placed upside down on the corresponding cable seat, and the slide block 302 in the slide rail 301 fits with the cable seat to realize the horizontal movement of the overall device. While the driving motor 201 rotates, the chain barrel 202 rotates and gradually releases the chain. When the height of the chain 203 is sufficient and the chain 203 in the electric hoist main body needs to be limited, the electric push rod 212 of the arc-shaped connecting block 211 pushes the clamping arc plate 207 to limit the chain 203. At this time, to avoid the sudden release of the winding state of the chain during lifting, multiple push rods 209 limit and wrap the torque limiting plate 210 around the chain barrel 202, clamp the chain barrel 202, and prevent the chain barrel 202 from rotating inertia. During this process, the insertion plate 305 and the cross bar 306 at the bottom of the slide rail 301 and the slide block 302 are inserted during the sliding process on the cable seat. Therefore, when fixing the slide rail 301, the hydraulic push rod 309 descends to the insertion port 308 in the cross bar 306, thereby completing the limitation of the slide rail 301 and the slide block 302.

[0048] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or sequence between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0049] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric hoist that is easy to fix, comprising an electric hoist body, characterized in that: The electric hoist body is composed of a crossbeam (101), a chain box (102) and a speed change assembly (103); a chain fixing unit and a slideway limiting unit are arranged inside the electric hoist body; the chain fixing unit is installed in the chain box (102), and the slideway limiting unit is installed on the crossbeam (101); The chain fixing unit comprises a driving motor (201), the driving motor (201) is installed on one side of a chain box (102), and the driving motor (201) is connected to a chain barrel (202) via a coupling, a chain (203) is wound around the chain barrel (202), and an open installation area is provided at both ends of the chain box (102), and fixed frames (204) are symmetrically fixedly arranged at the left and right ends of the open installation area, and limiting grooves (205) are arranged inside the two fixed frames (204), and a positioning arc plate (206) is fixedly installed at one end of the limiting groove (205), and a clamping arc plate (207) is limited and slidably arranged at the other end of the limiting groove (205).

2. The conveniently fixed electric hoist according to claim 1, characterized in that: The driving motor (201) is fixedly mounted on the chain box (102), and the two fixed frames (204) are both fixedly welded to the chain box (102), the two fixed frames (204) are both welded to corresponding positioning arc plates (206) via limiting grooves (205), and the two fixed frames (204) are slidably connected to clamping arc plates (207) via limiting grooves (205).

3. The conveniently fixed electric hoist according to claim 1, characterized in that: A fixed plate (208) is fixedly installed between the top of the two fixed frames (204) and the chain box (102), and a sliding push rod (209) is arranged in a horizontal array on each of the fixed plates (208), and multiple groups of push rods (209) on the same side are fixedly connected to a corresponding torque limit plate (210).

4. The conveniently fixed electric hoist according to claim 3, characterized in that: The outer sides of the positioning arc plate (206) and the clamping arc plate (207) on the same side are both welded with arc-shaped connecting blocks (211), and electric push rods (212) are passed through the two arc-shaped connecting blocks (211). The electric push rods (212) are limitedly connected to the corresponding arc-shaped connecting blocks (211), and one end of the chain (203) away from the chain box (102) is located in the rotating wheel (214), and the rotating wheel (214) is fixedly connected to the hook (213) through a connecting piece.

5. The conveniently fixed electric hoist according to claim 1, characterized in that: The slideway limiting unit comprises a slide rail (301) installed on one side of the speed change assembly (103), a slide seat (302) is fixedly arranged in the slide rail (301), magnetic suction grooves (303) are arranged at both ends of the slide seat (302), two magnetic suction grooves (303) are symmetrically provided with magnetic suction blocks (304), an insertion plate (305) is welded at the bottom of one of the magnetic suction blocks (304), and an entry block (307) installed with a cross bar (306) is welded at the bottom of the other magnetic suction block (304), one end of the cross bar (306) is limited in the insertion plate (305), and a plurality of groups of insertion ports (308) are arranged on the external connecting rod array on the cross bar (306).

6. The conveniently fixed electric hoist according to claim 5, characterized in that: A hydraulic push rod (309) is arranged on the top of the slide rail (301), and the hydraulic push rod (309) penetrates the slide rail (301) to the insertion port (308), and a sliding cable seat matching the slide rail (301) is provided with a through port linked to the hydraulic push rod (309).

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