Electric hoist with buffering function

Abstract

The utility model discloses an electric hoist with a buffering function, which comprises an electric hoist main body, the electric hoist main body comprises a lifting device, the lifting device comprises a shell and a chain rope penetrating through the bottom of the shell, and the bottom end of the chain rope is provided with a hook; a damping assembly is arranged on the bottom surface of the shell; the damping assembly comprises a hanging plate, bending base plates are symmetrically arranged on the top surface of the hanging plate, a spring sleeve is slidably connected to the top of the hanging rod, and a first spring is fixedly mounted in the spring sleeve; wherein transverse rods are symmetrically and fixedly installed on the two sides of the bottom of the shell, sliding sleeves are connected to the transverse rods in a sliding mode, and the transverse rods are sleeved with second springs; and finally, the pressure sensor can send out a stop signal in time, and can avoid twice, so that the pressure sensor is prevented from being instantaneously subjected to large impact force, and finally, the pressure sensor is not easy to damage due to impact.

Description

Technical Field

[0001] This utility model relates to the field of electric hoist technology, specifically to an electric hoist with a buffer function. Background Technology

[0002] The existing electric hoist hook connection structure is directly fixed to the wire rope. When the hook moves to the top, the existing touch stop element lacks buffering, which causes the sensing element to be damaged due to frequent impacts. Furthermore, the existing electric hoist hook connection structure makes the hook replacement process cumbersome, and the replacement mechanism has low strength, mostly relying on bolt force limit, which can easily leave safety hazards.

[0003] Publication No. CN216638650U discloses a connecting structure for an electric hoist hook, including a connecting seat, a buffer mechanism, a quick-release mechanism, a hook, and an anti-disengagement mechanism. The buffer mechanism includes a buffer chamber, a buffer spring, a connecting rod, and a damper. A buffer chamber is connected below the connecting seat, and buffer springs are symmetrically arranged inside the buffer chamber. A connecting rod is fixedly mounted inside the buffer spring. A damper is located above the buffer chamber, and the connecting rod is connected to the damper at the top. A quick-release mechanism is connected below the connecting rod, and a hook is located below the quick-release mechanism. The hook is equipped with an anti-disengagement mechanism. This device uses the buffer spring and damper to buffer the movement of the connecting rod under force, making it safer when lifting fragile workpieces. The hook can be quickly disassembled and replaced through the interlocking of grooves and protrusions, and the bolts only serve a fixing function and will not be damaged by excessive force. However, this patent still has the following problems in actual use:

[0004] The buffer structure in the above-mentioned device cannot effectively prevent the impact between the suspension components and the parts when the hook rises and stops, which leads to an increased rate of wear and aging of the parts. Moreover, the above-mentioned device still requires the use of bolts when installing the hook. Even if the bolts are no longer under excessive force, the removal and installation of the bolts themselves still make the hook installation unchanged.

[0005] An electric hoist with a buffer function is proposed to solve the problems mentioned above. Utility Model Content

[0006] The purpose of this utility model is to provide an electric hoist with a buffer function to solve the problem that the buffer structure in the above-mentioned device mentioned in the background art cannot effectively avoid the impact between the suspension component and the components when the hook rises and stops, which leads to an increased wear and aging rate of the components. Moreover, when the above-mentioned device is installed, bolts are still required. Even if the bolts are no longer under excessive force, the disassembly and assembly of the bolts themselves still make the installation of the hook inconvenient.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an electric hoist with a buffer function, comprising an electric hoist body, the electric hoist body comprising a lifting device and a moving device, the lifting device comprising a housing and a chain rope penetrating the bottom of the housing, the bottom end of the chain rope being equipped with a hook;

[0008] A locking assembly is provided between the chain and the hook, and a shock-absorbing assembly is provided on the bottom surface of the outer casing;

[0009] The shock absorption assembly includes a suspension plate with a central hole in the middle and suspension rods symmetrically arranged on both sides of the central hole. A bent pad is symmetrically fixedly connected to the top surface of the suspension plate, and a spring sleeve is slidably connected to the top of the suspension rod. A first spring is fixedly installed inside the spring sleeve.

[0010] Among them, crossbars are symmetrically fixedly installed on both sides of the bottom of the outer shell, a sliding sleeve is slidably connected to the crossbar, and a second spring is sleeved on the outside of the crossbar;

[0011] The locking assembly includes a connecting plate rotatably mounted on the bottom of the chain rope. The outer surface of the connecting plate has several hanging grooves, and the bottom of the connecting plate is connected to a mounting plate. The bottom of the mounting plate is fixedly connected to a hook.

[0012] Preferably, the second spring is located on the side of the sliding sleeve away from the suspension plate, and a loop rod is rotatably connected to one bottom side of the sliding sleeve, and a support rod is fixedly connected to the other bottom side of the sliding sleeve. The support rod is in contact with the bottom of the loop rod, and the bottom of the loop rod can be in contact with the bending pad.

[0013] Preferably, a pressure sensor is symmetrically and movably installed inside the suspension plate, and a rubber pad is fixedly connected between the top of the pressure sensor and the suspension plate. The sensing part of the pressure sensor extends out of the bottom of the suspension plate and is covered with a protective sponge.

[0014] Preferably, the bottom center of the connecting plate has a central groove, the top edge of the mounting plate has a number of fixedly connected bent hooks evenly distributed, the top center of the mounting plate has a central column fixedly connected, the top outer side of the central column has a lifting sleeve slidably connected, the bottom of the lifting sleeve has a third spring fixedly connected, the top of the lifting sleeve has a helical tooth ring fixedly connected, the outer side of the lifting sleeve has a pull ring fixedly connected, and the interior of the central groove has a number of evenly distributed anti-rotation hooks rotatably installed.

[0015] Preferably, the central column is inserted into the central groove, the helical tooth ring engages with the anti-rotation hook, and the bending hook passes through the hanging groove and is suspended on the connecting plate.

[0016] Preferably, a limiting ring is fixedly connected to the bottom outer side of the central column, the limiting ring is fixedly connected to the bottom end of the third spring, and the third spring is sleeved on the outside of the central column.

[0017] Preferably, the anti-rotation hook is fixedly connected to a rotating post, the rotating post is rotatably connected to the central groove, and a spring is sleeved on the outside of the rotating post.

[0018] Compared with the prior art, the beneficial effects of this utility model are: this electric hoist with a buffer function enables the pressure sensor to not only send a stop signal in time, but also to perform two avoidance maneuvers as the connecting plate moves, thus preventing the pressure sensor from being subjected to a large impact force instantly. Ultimately, this makes the pressure sensor less prone to damage due to impact. The specific details are as follows:

[0019] 1. By impacting the pressure sensor with the connecting plate, the pressure sensor moves upward and squeezes the rubber pad for initial avoidance, preventing continuous compression of the pressure sensor. Under the impact force of the connecting plate and the inertia of upward movement, the suspension plate passively moves upward to avoid the pressure sensor. At this time, the suspension rod squeezes the first spring to achieve the first buffer. When the suspension plate moves upward, the bent pad will contact the loop rod and squeeze it to make the sliding sleeve move along the crossbar, causing the second spring to contract and achieve the second buffer. In the end, the pressure sensor can not only issue a stop signal in time, but also avoid the pressure sensor twice under the movement of the connecting plate, avoiding the pressure sensor from being subjected to a large impact force in an instant. Ultimately, the pressure sensor is not easily damaged by impact.

[0020] 2. The hooks, including the bending hooks, hanging grooves, anti-rotation hooks, and beveled teeth, allow for quick installation and removal without the need for bolts, increasing ease of use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the front structure of this utility model;

[0022] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle;

[0023] Figure 3 This is a top view of the suspension plate structure.

[0024] Figure 4 This is a schematic diagram of the installation structure of the central column;

[0025] Figure 5 This is a schematic diagram of the bottom structure of the connecting plate;

[0026] Figure 6 A schematic diagram of the installation structure to prevent the hook from rotating.

[0027] In the diagram: 1. Electric hoist body; 101. Lifting device; 102. Mobile device; 103. Chain rope; 104. Hook; 2. Shock absorption assembly; 201. Suspension plate; 202. Center hole; 203. Suspension rod; 204. Bending pad; 205. Spring sleeve; 206. First spring; 207. Crossbar; 208. Sliding sleeve; 209. Second spring; 210. Support rod; 211. Retractable rod; 21 2. Pressure sensor; 213. Rubber pad; 214. Protective sponge; 3. Locking assembly; 301. Connecting plate; 302. Hanging groove; 303. Central groove; 304. Anti-rotation hook; 305. Mounting plate; 306. Central column; 307. Limiting ring; 308. Lifting sleeve; 309. Helical toothed ring; 310. Pull ring; 311. Third spring; 312. Rotating column; 313. Torx spring; 314. Bending hook. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-6 The present invention provides a technical solution: an electric hoist with a buffer function, including an electric hoist body 1, the electric hoist body 1 including a lifting device 101 and a moving device 102, the lifting device 101 including a shell and a chain rope 103 passing through the bottom of the shell, and a hook 104 installed at the bottom end of the chain rope 103.

[0030] A locking component 3 is provided between the chain 103 and the hook 104, and a shock-absorbing component 2 is provided on the bottom surface of the outer casing;

[0031] The shock absorption assembly 2 includes a suspension plate 201, a central hole 202 in the middle of the suspension plate 201, suspension rods 203 symmetrically arranged on both sides of the central hole 202, a bent pad 204 symmetrically fixedly connected to the top surface of the suspension plate 201, a spring sleeve 205 slidably connected to the top of the suspension rod 203, and a first spring 206 fixedly installed inside the spring sleeve 205; the spring sleeve 205 is fixedly connected to the bottom of the outer shell, the bottom end of the first spring 206 is fixedly connected to the suspension rod 203, the top end of the first spring 206 is fixedly connected to the spring sleeve 205, and the chain rope 103 passes through the central hole 202.

[0032] The bottom of the outer casing is symmetrically fixedly mounted with crossbars 207, and a sliding sleeve 208 is slidably connected to the crossbars 207. A second spring 209 is sleeved on the outside of the crossbars 207. One end of the second spring 209 is fixedly connected to the sliding sleeve 208, and the other end of the second spring 209 is fixedly connected to the crossbars 207.

[0033] The locking component 3 includes a connecting plate 301 rotatably mounted on the bottom of the chain 103. The outer surface of the connecting plate 301 is provided with several hanging slots 302. The bottom of the connecting plate 301 is connected to a mounting plate 305. The bottom of the mounting plate 305 is fixedly connected to the hook 104. When rotating the mounting plate 305, the connecting plate 301 needs to be held to prevent the connecting plate 301 from rotating. There are no fewer than four hanging slots 302.

[0034] The second spring 209 is located on the side of the sliding sleeve 208 away from the suspension plate 201, and a loop rod 211 is rotatably connected to one side of the bottom of the sliding sleeve 208. A support rod 210 is fixedly connected to the other side of the bottom of the sliding sleeve 208. The support rod 210 is in contact with the bottom of the loop rod 211, and the bottom of the loop rod 211 can be in contact with the bending pad 204. The bending pad 204 is L-shaped.

[0035] A pressure sensor 212 is symmetrically and movably installed inside the suspension plate 201. A rubber pad 213 is fixedly connected between the top of the pressure sensor 212 and the suspension plate 201. The sensing part of the pressure sensor 212 extends out of the bottom of the suspension plate 201 and is covered with a protective sponge 214. The pressure sensor 212 is existing technology. The protective sponge 214 is fixedly installed at the bottom of the suspension plate 201. The pressure sensor 212 can be raised and lowered and moved inside the suspension plate 201.

[0036] The bottom center of the connecting plate 301 has a central groove 303. The top edge of the mounting plate 305 has several fixedly connected bent hooks 314 evenly distributed. The center of the top surface of the mounting plate 305 is fixedly connected to a central column 306. The outer side of the top of the central column 306 is slidably connected to a lifting sleeve 308. The bottom of the lifting sleeve 308 is fixedly connected to a third spring 311. The top of the lifting sleeve 308 is fixedly connected to a helical tooth ring 309. The outer side of the lifting sleeve 308 is fixedly connected to a pull ring 310. Several evenly distributed anti-rotation hooks 304 are rotatably installed inside the central groove 303. The central groove 303 is stepped and has several clearance grooves inside. The anti-rotation hooks 304 are rotatably installed in the clearance grooves.

[0037] The central column 306 is inserted into the central groove 303, the helical tooth ring 309 is engaged with the anti-rotation hook 304, and the bending hook 314 passes through the hanging groove 302 and is suspended on the connecting plate 301; the helical tooth ring 309 and the anti-rotation hook 304 ensure that the central column 306 can only rotate in one direction after installation.

[0038] A limiting ring 307 is fixedly connected to the bottom outer side of the central column 306. The limiting ring 307 is fixedly connected to the bottom end of the third spring 311, which is sleeved on the outside of the central column 306.

[0039] The anti-rotation hook 304 is fixedly connected to the rotating column 312, which is rotatably connected to the central groove 303. A spring 313 is sleeved on the outside of the rotating column 312. The spring 313 can pull the anti-rotation hook 304 to maintain its initial position, and the anti-rotation hook 304 in the initial position is engaged with the helical tooth ring 309.

[0040] Working principle: Before using this type of electric hoist with a buffer function, it is necessary to check the overall condition of the device to ensure it can operate normally. Figure 1 - Figure 6 As shown, when the chain rope 103 drives the hook 104 to move upward and reset, the connecting plate 301 impacts the pressure sensor 212, causing the pressure sensor 212 to move upward and squeeze the rubber pad 213 for initial avoidance, preventing the pressure sensor 212 from being continuously squeezed. At this time, the pressure sensor 212 will send a stop signal to the lifting device 101. After the pressure sensor 212 is avoided, the suspension plate 201 will passively move upward and avoid being squeezed by the impact force of the connecting plate 301 and the upward inertia. At this time, the suspension rod 203 squeezes the first spring 2. 06 achieves the first buffer. When the suspension plate 201 moves upward, the bending pad 204 will contact the loop rod 211 and squeeze it to make the sliding sleeve 208 move along the crossbar 207, causing the second spring 209 to contract, achieving the second buffer. In the end, the pressure sensor 212 can not only send a stop signal in time, but also continuously perform two avoidances under the movement of the connecting plate 301, avoiding the pressure sensor 212 from being subjected to a large impact force in an instant, and ultimately making the pressure sensor 212 less likely to be damaged by impact.

[0041] When the hook 104 needs to be installed, first insert the center post 306 into the center groove 303, and at the same time let the bent hook 314 pass through the hanging groove 302. At this time, the anti-rotation hook 304 is engaged with the helical tooth ring 309. Then rotate the mounting plate 305 clockwise so that the bent hook 314 is hooked on the connecting plate 301. At the same time, the helical tooth ring 309 rotates under the drive of the center post 306, and the center post 306 cannot rotate in the opposite direction due to the anti-rotation hook 304.

[0042] When it is necessary to remove the hook 104, the lifting sleeve 308 is pulled down by the pull ring 310, which causes the helical tooth ring 309 to move down and disengage from the anti-rotation hook 304. Then, the mounting plate 305 is rotated counterclockwise, which causes the bent hook 314 to slide and disengage in the hanging groove 302. Finally, the hook 104 can be quickly installed and removed without the use of bolts, increasing the convenience of use.

[0043] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An electric hoist with a buffer function, comprising an electric hoist body (1), the electric hoist body (1) comprising a lifting device (101) and a moving device (102), the lifting device (101) comprising a housing and a chain rope (103) penetrating the bottom of the housing, the bottom end of the chain rope (103) being fitted with a hook (104); Its features are, Also includes: A locking component (3) is provided between the chain (103) and the hook (104), and a shock-absorbing component (2) is provided on the bottom surface of the outer shell; The shock absorption assembly (2) includes a suspension plate (201), a central hole (202) is provided in the middle of the suspension plate (201), suspension rods (203) are symmetrically provided on both sides of the central hole (202), a bent pad (204) is symmetrically fixedly connected to the top surface of the suspension plate (201), a spring sleeve (205) is slidably connected to the top of the suspension rod (203), and a first spring (206) is fixedly installed inside the spring sleeve (205). Among them, crossbars (207) are symmetrically fixedly installed on both sides of the bottom of the outer shell, and sliding sleeves (208) are slidably connected on the crossbars (207). A second spring (209) is sleeved on the outside of the crossbars (207). The locking component (3) includes a connecting plate (301) rotatably mounted on the bottom of the chain (103). The outer surface of the connecting plate (301) is provided with several hanging grooves (302). The bottom of the connecting plate (301) is connected to a mounting plate (305), and the bottom of the mounting plate (305) is fixedly connected to a hook (104).

2. The electric hoist with buffer function according to claim 1, characterized in that: The second spring (209) is located on the side of the sliding sleeve (208) away from the suspension plate (201), and a loop rod (211) is rotatably connected to one side of the bottom of the sliding sleeve (208), and a support rod (210) is fixedly connected to the other side of the bottom of the sliding sleeve (208). The support rod (210) is in contact with the bottom of the loop rod (211), and the bottom of the loop rod (211) can be in contact with the bending pad (204).

3. An electric hoist with a buffer function according to claim 1, characterized in that: A pressure sensor (212) is symmetrically and movably installed inside the suspension plate (201). A rubber pad (213) is fixedly connected between the top of the pressure sensor (212) and the suspension plate (201). The sensing part of the pressure sensor (212) extends out of the bottom of the suspension plate (201) and is covered with a protective sponge (214).

4. An electric hoist with a buffer function according to claim 1, characterized in that: The bottom center of the connecting plate (301) is provided with a central groove (303). The top edge of the mounting plate (305) is evenly distributed with several fixedly connected bent hooks (314). The center of the top surface of the mounting plate (305) is fixedly connected with a central column (306). The top outer side of the central column (306) is slidably connected with a lifting sleeve (308). The bottom of the lifting sleeve (308) is fixedly connected with a third spring (311). The top of the lifting sleeve (308) is fixedly connected with a helical tooth ring (309). The outer side of the lifting sleeve (308) is fixedly connected with a pull ring (310). Several evenly distributed anti-rotation hooks (304) are rotatably installed inside the central groove (303).

5. An electric hoist with a buffer function according to claim 4, characterized in that: The central column (306) is inserted into the central groove (303), the helical tooth ring (309) is engaged with the anti-rotation hook (304), and the bending hook (314) passes through the hanging groove (302) and is suspended on the connecting plate (301).

6. An electric hoist with a buffer function according to claim 4, characterized in that: A limiting ring (307) is fixedly connected to the bottom outer side of the central column (306). The limiting ring (307) is fixedly connected to the bottom end of the third spring (311). The third spring (311) is sleeved on the outside of the central column (306).

7. An electric hoist with a buffer function according to claim 4, characterized in that: The anti-rotation hook (304) is fixedly connected to a rotating post (312), the rotating post (312) is rotatably connected to the central groove (303), and a spring (313) is sleeved on the outside of the rotating post (312).

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