Lithium battery remote control electric hoist

Abstract

The utility model relates to the technical field of hoisting, in particular to a lithium battery remote control electric hoist which comprises a main body, a remote control handle, a motor, a transmission module, a driving limiting module and a hoisting chain part, the remote control handle is installed on the front side of the main body, the main body comprises a base shell part, a cover shell part and a pawl part, and the base shell part comprises a main shell. A right shaft sleeve is fixedly connected in a hole position on the front side of the interior of the main shell, the upper side and the lower side of the interior of the main shell are both provided with mounting holes which are asymmetrical up and down, an upper lifting hook is fixedly connected in an opening position on the upper side of the main shell, and a clamping cavity is formed between a left round hole and a right round hole of the main shell. In cooperation with the scheme, an external power source is not needed for power supply, so that the device is lighter in use, convenient to carry, effective in braking mode and low in cost, in addition, the weight of the electric hoist is greatly reduced through the braking mode, and the electric hoist is convenient to carry and use.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting, in particular to a lithium-electric remote-controlled electric hoist. Background Art

[0002] Electric hoist is a kind of lifting equipment with the characteristics of compact structure and easy operation. It is usually composed of electric motor, transmission mechanism, chain, hook and other components. The electric motor drives the transmission mechanism's drum to rotate, thereby realizing the retraction and extension of the chain to complete the lifting and lowering of heavy objects.

[0003] Compared with traditional hand-pulled hoists, electric hoists have the advantages of high efficiency and labor saving, precise control and strong load capacity. Conventional electric hoists on the market are currently equipped with brakes, which are connected to the motor shaft. If the motor fails or there is a sudden power outage, the brake will stop the motor shaft from rotating and the heavy object will not slide down. However, these brakes account for a large proportion of the overall weight of the electric hoist, which is inconvenient to carry and has a high cost. Therefore, based on the above problems, a lithium-ion remote-controlled electric hoist is proposed. Utility Model Content

[0004] The utility model aims to provide a lithium battery remote control electric hoist to solve the problems of the existing electric hoist being inconvenient to carry and having high cost.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A lithium battery remote control electric hoist, comprising a main body, a remote control handle, a motor, a transmission module, a drive limit module and a lifting chain part, wherein a remote control handle is installed on the front side of the main body, the main body comprises a base shell part, a cover shell part, a ratchet part, an electric push rod and a pull rope, the base shell part comprises a main shell, a right shaft sleeve is fixedly connected in the inner front hole position of the main shell, upper and lower sides of the inner part of the main shell are provided with upper and lower asymmetric mounting holes, an upper hook is fixedly connected in the upper mouth position of the main shell, a clamping cavity is opened between the left and right circular holes of the main shell, the ratchet parts are all installed at the mounting holes, the ratchet parts comprise a pin rod rotatably connected to the mounting hole, a ratchet block is fixedly connected to the outer side of the left end of the pin rod, a ratchet spring is sleeved on the outer side of the pin rod, the left folded end of the ratchet spring is in contact with the ratchet block, and the right folded end of the ratchet spring is in contact with the rib plate on the outer side of the mounting hole;

[0007] The cover shell portion includes a cover body detachably connected to the main shell bolts, a first left shaft sleeve is fixedly connected in the inner rear hole of the cover body, a second left shaft sleeve is fixedly connected in the inner middle hole of the cover body, a third left shaft sleeve is fixedly connected in the inner front hole of the cover body, a motor is fixedly connected to the right circular hole of the base shell portion, a transmission module and a drive limit module are installed on the inner side of the main body, and a lifting chain portion is installed at the drive limit module.

[0008] Preferably, the transmission module includes a connecting gear sleeve splined with the driving shaft of the motor, the inner side of the first left sleeve is rotatably connected to a helical gear long shaft whose right end spline is meshed with the connecting gear sleeve, the left end of the helical gear long shaft is meshed with a helical gear, the inner side of the helical gear is meshed with a short gear shaft whose left end is rotatably connected to the inner wall of the second left sleeve, a rotating shaft is rotatably connected between the hole position of the third left sleeve and the right sleeve, the outer side of the rotating shaft is fixedly connected to a large gear meshed with the short gear shaft, the right side of the large gear is fixedly connected to a ratchet that cooperates with the pawl block, the right side of the ratchet is fixedly connected to a small gear, and the rear side of the small gear is meshed with a spline hole gear sleeved on the outer side of the helical gear long shaft.

[0009] The cam is an angular channel formed between a pair of camshafts and a gear, and the cam is connected to a pair of camshafts which are linked together by a pair of linking threads on the camshaft to form a pair of camshafts that are interlocked with the gears of the carrier.

[0010] Preferably, the spring sheet is composed of a middle plate and an elastic sheet set at an inclined angle, the elastic sheet of the spring sheet is arranged on the lower side of the button of the micro switch, a spacing is arranged between the elastic sheet of the spring sheet and the micro switch, the limiting ring is arranged on the lower side of the elastic sheet of the spring sheet, and the diameter of the limiting ring is smaller than the width of the clamping cavity.

[0011] Preferably, the remote control handle is composed of an electrical wire box, wires, a handle and a lithium power source, the remote control handle is electrically connected to the motor, the remote control handle is electrically connected to the electric push rod, the right end of the helical gear long shaft is in contact with the drive shaft of the motor, the right end of the helical gear long shaft is inserted 50 percent into the connecting gear sleeve, and the inner wall of the lifting sprocket is in contact with the outer curved surface of the rod body of the helical gear long shaft.

[0012] The cam is an arbitrarily arranged chain which is adapted to move the chain from one end of the chain to the other end of the chain, the cam being adapted to move the chain from one end of the chain to the other end of the chain.

[0013] Preferably, the rear section of the chain and the tail chain frame are both arranged on the inner side of the chain box, the spacing between a group of the positioning bars is the same as the width of the magnetic block, the iron sheet is arranged at the same height position of the rope housing, and both ends of the damping rope are wound on the outside of the reel.

[0014] Preferably, a brake assembly and a load limiting assembly are provided on the rotating shaft, the ratchet sliding sleeve is provided on the rotating shaft, the brake assembly includes a brake seat threadedly sleeved on the rotating shaft, a brake seat disc spring is sleeved on the brake seat, the inner ring fixed sleeve of the ratchet is provided with a ratchet bushing, the load limiting assembly includes a stop block, a load limiting pressure plate, a load limiting disc spring, and a load limiting washer which are located on the side of the large gear away from the load limiting seat and are sequentially sleeved along the length direction of the rotating shaft, one end of the rotating shaft is threadedly connected with a load limiting nut resting on the load limiting washer, the sliding sleeve on the rotating shaft is provided with a load limiting seat, the load limiting seat and the brake seat are respectively located on both sides of the ratchet, the large gear sliding sleeve is provided on the load limiting seat, and the load limiting pressure plate is threadedly connected to the load limiting seat.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The electric hoist is protected by a load limit component. Overload protection is achieved by adjusting the tightness of the load limit nut on the top. When the cargo exceeds the weight set by the overload protection, the large gear will slip, making it impossible to lift the cargo.

[0017] A certain gap is generated through the brake seat, ratchet and load limiter seat, and the gap is always in an open state, thereby driving the spline hole gear to rotate in the opposite direction. When descending, the ratchet is restricted by the pawl block and does not rotate, so that the gap is always in an open state to achieve descent. When the power is off, the gap is instantly closed under the action of the gravity of the goods, so that the goods will not slide down. This braking method is effective and low in cost. In addition, this braking method greatly reduces the weight of the electric hoist and facilitates the carrying and use of the electric hoist.

[0018] In the utility model, by providing structures such as a storage and positioning module, a lifting chain and a remote control handle, the chain box of the storage and positioning module can store the chain rear section, the rear limit ring and the tail chain frame of the lifting chain, so as to prevent the rear part of the lifting chain from swinging when the electric hoist is carried, and the tightening part can cooperate with the iron sheet and the positioning strip to tie and fix the front part of the lifting chain and the handle of the remote control handle to the chain box, so as to prevent the front part of the lifting chain and the remote control handle from swinging when the electric hoist is carried.

[0019] The utility model positions the lower part of the electric hoist to avoid swaying when it is carried. In combination with the scheme that does not require external power supply, the device is lighter and easier to carry when in use. The braking method is effective and has low cost. In addition, this braking method greatly reduces the weight of the electric hoist, making it convenient to carry and use the electric hoist. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 For this utility model Figure 1 A rear view structural diagram of ;

[0022] Figure 3 This is a schematic diagram of the structure of the remote control handle of the utility model;

[0023] Figure 4 For this utility model Figure 1 A schematic diagram of the structure of the storage positioning module and the remote control handle;

[0024] Figure 5 For this utility model Figure 4 Schematic diagram of the split structure;

[0025] Figure 6 For this utility model Figure 5 Another perspective structural diagram of;

[0026] Figure 7 It is a schematic diagram of the split structure of the main body of the utility model;

[0027] Figure 8 For this utility model Figure 7 Another perspective structural diagram of;

[0028] Fig. 9 It is a structural schematic diagram of the base shell part of the utility model;

[0029] Fig.10 It is a schematic diagram of the structure of the ratchet part of the utility model;

[0030] Fig.11It is a schematic diagram of the assembly structure of the transmission module and the drive limit module of the utility model;

[0031] Fig.12 This is a structural diagram of the drive limit module of the utility model;

[0032] Fig.13 For this utility model Fig.12 Schematic diagram of the split structure;

[0033] Fig.14 It is a structural schematic diagram of the lifting sprocket of the utility model;

[0034] Fig.15 It is a structural schematic diagram of the chain guide seat of the utility model;

[0035] Fig.16 For this utility model Fig.15 Schematic diagram of the split structure;

[0036] Fig.17 It is a structural schematic diagram of the transmission module of the utility model;

[0037] Fig.18 For this utility model Fig.17 Another perspective structural diagram of the lifting sprocket;

[0038] Fig.19 This is a structural diagram of the storage and positioning module of the utility model;

[0039] Fig. 20 For this utility model Fig.19 A schematic diagram of the front view structure of

[0040] Fig.21 For this utility model Fig. 20 A schematic diagram of the structure at A;

[0041] Fig. 22 It is a structural schematic diagram of the load limiting component of the utility model.

[0042] In the figure: 1. main body; 11. base shell; 111. main shell; 112. right sleeve; 113. mounting hole; 114. upper hook; 115. clamping chamber; 12. cover shell; 121. cover body; 122. first left sleeve; 123. second left sleeve; 124. third left sleeve; 13. ratchet part; 131. pin rod; 132. ratchet spring; 133. ratchet block; 2. remote control handle; 3. motor; 4. transmission module; 41. connecting gear sleeve; 42. helical gear long shaft; 43. helical gear; 44. short gear shaft; 45. rotating shaft; 46. large gear; 47. ratchet; 48. small gear; 49. spline hole gear; 5. drive limit module; 51. guide chain seat; 52. lifting sprocket; 53. Chain cover; 54. Mounting port; 55. Micro switch; 56. Spring sheet; 6. Lifting chain; 61. Chain; 62. Lower hook; 63. Tail chain frame; 64. Limiting ring; 7. Storage and positioning module; 71. Chain box; 72. Iron sheet; 73. Positioning strip; 74. Tightening part; 741. Turntable; 742. Rope housing; 743. Shaft; 744. Spring spring; 745. Reel; 746. Damping rope; 747. Magnetic block; 748. Through port; 4501. Brake seat; 4502. Brake seat disc spring; 4503. Ratchet bushing; 4504. Load-limiting nut; 4505. Load-limiting seat; 4506. Load-limiting washer; 4507. Load-limiting pressure plate; 4508. Load-limiting disc spring. DETAILED DESCRIPTION

[0043] See also Figure 1-21 , the utility model provides a technical solution:

[0044] A lithium battery remote control electric hoist comprises a main body 1, a remote control handle 2, a motor 3, a transmission module 4, a drive limit module 5 and a lifting chain 6. The remote control handle 2 is installed on the front side of the main body 1. The main body 1 comprises a base shell 11, a cover shell 12 and a ratchet 13. The base shell 11 comprises a main shell 111. A right shaft sleeve 112 is fixedly connected in a hole at the front side of the main shell 111. The main shell 111 has asymmetric mounting holes 113 on both sides. The upper and lower sides of the main shell 111 are fixed in an upper opening. An upper hook 114 is connected, and a clamping cavity 115 is opened between the left and right circular holes of the main shell 111. The pawl parts 13 are all installed at the mounting holes 113. The pawl parts 13 include a pin rod 131 rotatably connected to the mounting hole 113, and a pawl block 133 is fixedly connected to the outer side of the left end of the pin rod 131. A pawl spring 132 is sleeved on the outer side of the pin rod 131, and the left folded end of the pawl spring 132 is fitted with the pawl block 133, and the right folded end of the pawl spring 132 is fitted with the rib plate outside the mounting hole 113.

[0045] The cover shell portion 12 includes a cover body 121 detachably connected to the main shell 111 by bolts, a first left shaft sleeve 122 is fixedly connected in the inner rear hole of the cover body 121, a second left shaft sleeve 123 is fixedly connected in the inner middle hole of the cover body 121, a third left shaft sleeve 124 is fixedly connected in the inner front hole of the cover body 121, a motor 3 is fixedly connected to the right circular hole of the base shell portion 11, a transmission module 4 and a drive limit module 5 are installed on the inner side of the main body 1, a lifting chain portion 6 is installed at the drive limit module 5, the transmission module 4 includes a connecting tooth sleeve 41 meshing with the drive shaft spline of the motor 3, the inner side of the first left shaft sleeve 122 is rotatably connected with its right end spline and the connecting A helical gear shaft 42 meshed with the gear sleeve 41, a helical gear 43 is meshed with the helical gear at the left end of the helical gear shaft 42, a short gear shaft 44 whose left end is rotatably connected to the inner wall of the second left shaft sleeve 123 is meshed with the inner side of the helical gear 43, a rotating shaft 45 is rotatably connected between the third left shaft sleeve 124 and the hole position of the right shaft sleeve 112, a large gear 46 meshed with the short gear shaft 44 is fixedly connected to the outer side of the rotating shaft 45, a ratchet 47 matched with the pawl block 133 is fixedly connected to the right side of the large gear 46, a small gear 48 is fixedly connected to the right side of the ratchet 47, and a spline hole gear 49 sleeved on the outer side of the helical gear shaft 42 is meshed with the rear side of the small gear 48. Through this arrangement, after the motor 3 is running, it can drive the lifting sprocket 52 of the driving limit module 5 to rotate forward and reverse through the reduction transmission of the transmission module 4; the driving limit module 5 is installed on the inner side of the clamping cavity 115, and the driving limit module 5 includes a guide chain seat 51 fixedly connected to the inner wall of the clamping cavity 115, and the upper side rotating seat of the guide chain seat 51 is rotatably connected with a lifting sprocket 52 sleeved on the outer side of the helical gear major axis 42, and the left end spline of the lifting sprocket 52 is meshed with the inner teeth of the spline hole gear 49, and the upper side of the guide chain seat 51 is detachably connected to a chain guard cover 53 by bolts, and the lower left and right sides of the guide chain seat 51 are provided with installation openings 54, and the inner sides of the installation openings 54 are detachably connected by bolts. A micro switch 55 is disassembled and connected, and a spring sheet 56 is detachably connected to the lower side of the guide chain seat 51 through bolts. The lifting chain portion 6 includes a chain 61 that passes through the cross grooves on both sides of the guide chain seat 51 and matches the chain groove of the lifting sprocket 52. The front lower end of the chain 61 is fixedly connected to a lower hook 62, and the rear lower end of the chain 61 is fixedly connected to a tail chain frame 63. The upper sides of the tail chain frame 63 and the lower hook 62 are both provided with a limiting ring 64 fixedly connected to the chain 61. Through this arrangement, the transmission of the transmission module 4 can drive the lifting sprocket 52 to rotate, and then drive the chain 61 matched therewith to move, and the driving limit module 5 can limit the displacement of the chain 61 up and down;The spring sheet 56 is composed of a middle plate and an elastic sheet set at an inclined angle. The elastic sheets of the spring sheet 56 are all set on the lower side of the button of the micro switch 55. A spacing is set between the elastic sheets of the spring sheet 56 and the micro switch 55. The limiting ring 64 is set on the lower side of the elastic sheet of the spring sheet 56. Through this setting, the limiting ring 64 can squeeze the elastic sheet of the spring sheet 56 after moving up, so that the compressed elastic flat can squeeze the button of the micro switch 55. The diameter of the limiting ring 64 is smaller than the width of the clamping cavity 115. Through this setting, the limiting ring 64 can enter the clamping cavity 115; the remote control handle 2 is composed of a wire box, wires, a handle and a lithium power source. The remote control handle 2 is electrically connected to the motor 3. The right end of the helical gear long axis 42 fits with the drive shaft of the motor 3. The right end of the helical gear long axis 42 is inserted into the connecting gear sleeve 41 by 50%. Through this setting, the drive shaft of the motor 3 can drive the helical gear long axis 42 to rotate through the connecting gear sleeve 41. The inner wall of the lifting sprocket 52 fits with the outer curved surface of the rod body of the helical gear long axis 42. Through this setting, the lifting sprocket 52 can be supported to a certain extent. ;

[0046] like Figure 1 , Figure 2 , Figure 19-21As shown, a storage and positioning module 7 is installed at the lower rear side of the main body 1, and the storage and positioning module 7 includes a chain box 71 that is detachably connected to the main body 1 by bolts, and an iron sheet 72 is fixedly connected to the front end surface of the chain box 71, and a positioning strip 73 is fixedly connected to the front end surface of the iron sheet 72 twice. A tightening part 74 is installed at the chain box 71, and the tightening part 74 includes a turntable 741. The left and right end surfaces of the chain box 71 are rotatably connected to the turntable 741, and the side of the turntable 741 away from the chain box 71 is fixedly connected to a rope housing 742. The rope housing 742 The inner side of each of the shafts 743 is rotatably connected, and the outer side of each of the shafts 743 is fixedly connected with a spring spring 744 in a tightened state. The other end of the spring spring 744 is fixedly connected to the inner wall of the rope housing 742, and the outer side of each of the shafts 743 is fixedly connected with a reel 745. The inner side of the rope housing 742 is provided with a through hole 748 at the lower side of the reel 745. A damping rope 746 that passes through the through hole 748 and bypasses the lower part of the chain box 71 is fixedly connected to the outer side of the reel 745. The outer side of the damping rope 746 is slidably connected to the outer side of the reel 745. There is a set of two magnetic blocks 747, through which the chain box 71 storing the positioning module 7 can store the rear section of the chain 61 of the lifting chain part 6, the rear limit ring 64 and the tail chain frame 63, so as to prevent the rear part of the lifting chain part 6 from swinging when the electric hoist is carried, and the tightening part 74 can cooperate with the iron sheet 72 and the positioning strip 73 to tie the front part of the lifting chain part 6 and the handle of the remote control handle 2 to the chain box 71, so as to prevent the front part of the lifting chain part 6 and the remote control handle 2 from swinging when the electric hoist is carried; The rear section and the tail chain frame 63 are both arranged on the inner side of the chain box 71. This arrangement prevents the rear section of the chain 61 from swinging when moving. The spacing between a group of positioning bars 73 is the same as the width of the magnetic block 747. This arrangement allows the magnetic block 747 to be just stuck between a group of positioning bars 73. The iron sheet 72 is arranged at the same height position of the rope shell 742. Both ends of the damping rope 746 are rolled up on the outside of the reel 745. This arrangement allows both ends of the damping rope 746 to be further rolled up.

[0047] The rotating shaft 45 is provided with a brake assembly and a load limiting assembly. The brake assembly and the load limiting assembly are prior art. The brake assembly and the load limiting assembly are briefly described below. The ratchet 47 is slidably sleeved on the rotating shaft 45. The brake assembly includes a brake seat 4501 threadedly sleeved on the rotating shaft 45. The brake seat 4501 is sleeved with a brake seat disc spring 4502. The inner ring fixed sleeve of the ratchet 47 is provided with a ratchet bushing 4503. The load limiting assembly includes a side of the large gear 46 away from the load limiting seat 4505 and along the rotating shaft 4 5, a stop block, a load limiting pressure plate 4507, a load limiting disc spring 4508, and a load limiting washer 4506 are sequentially sleeved in the length direction of the rotating shaft 45, one end of the rotating shaft 45 is threadedly connected with a load limiting nut 4504 abutting against the load limiting washer 4506, a load limiting seat 4505 is slidably sleeved on the rotating shaft 45, the load limiting seat 4505 and the brake seat 4501 are respectively located on both sides of the ratchet 47, the large gear 46 is slidably sleeved on the load limiting seat 4505, and the load limiting pressure plate 4507 is threadedly connected to the load limiting seat 4505. The electric hoist is protected by a load limiting component. Overload protection is achieved by adjusting the tightness of the load limiting nut 4504 at the top. When the cargo exceeds the weight set for the overload protection, the large gear 46 will slip, and the cargo cannot be lifted. The brake block is used to adjust the friction gap between the brake seat 4501 and the ratchet 47. A little friction gap is required to achieve the descending function. The brake seat 4501 and the load limiting seat 4505 respectively arranged on both sides of the ratchet 47 cooperate with the brake seat disc spring 4502. To achieve the clamping and locking of the ratchet 47, when rising, the motor 3 drives the helical gear long shaft 42 to rotate, the helical gear long shaft 42 drives the helical gear 43 to rotate, the helical gear 43 drives the short gear shaft 44, the short gear shaft 44 drives the large gear 46 to rotate, the large gear 46 rotates to make the brake seat 4501, the ratchet 47, and the load limit seat 4505 become one, the friction gap is closed, thereby driving the spline hole gear 49 to rotate, and the spline hole gear 49 then drives the lifting sprocket 52 to achieve the rising function, because there is a ratchet block 133 When the load is lowered, the gear 4501 is in a state of being opened, thereby driving the gear 4505 to rotate in the opposite direction.The lower part of the electric hoist is positioned to prevent it from swaying when carried. In addition, the present solution does not require an external power supply, making the device lighter and easier to carry when in use. The braking method is effective and has a low cost. In addition, this braking method greatly reduces the weight of the electric hoist, making it easier to carry and use the electric hoist.

[0048] Working process: The operation of the lithium-ion remote-controlled electric hoist is as follows. First, the base shell 11 and the cover shell 12 of the main body 1 can accommodate and support the drive limit module 5, the transmission module 4, and the motor 3. The operation of the motor 3 can be controlled by the remote control handle 2. After the motor 3 is running, the deceleration transmission of the transmission module 4 can drive the lifting sprocket 52 of the drive limit module 5 to rotate forward and reverse. The forward and reverse rotation of the lifting sprocket 52 can drive the chain 61 of the lifting chain part 6 to achieve the function of lifting and lowering. In addition to driving the chain 61, the drive limit module 5 can also limit the displacement of the chain 61 up and down to prevent the chain 61 from being pulled up when lifting heavy objects. In the case of over-lifting, the operation is as follows: when the lower hook 62 of the lifting chain 6 is lifting the weight, the front section of the chain 61 will drive the front limit ring 64 to move upward. When over-lifting is about to occur, the limit ring 64 will move up into the clamping cavity 115 to squeeze the spring sheet 56 of the driving limit module 5, so that the elastic sheet of the spring sheet 56 presses the button contact of the micro switch 55. At this time, the micro switch 55 will send a control signal to the remote control handle 2 to control the driving shaft of the motor 3 to stop rotating, thereby completing the limit of lifting the weight. On the other hand, when the transmission module 4 drives the chain 61 to lift the weight through the lifting sprocket 52, it can only operate in one direction due to the limit protection of the ratchet portion 13. To avoid chain derailment due to failure of motor 3, when the weight is lifted and the hook 62 needs to be lowered, when lifting the weight, the motor 3 is controlled to operate so that its driving shaft drives the helical gear long shaft 42 to rotate through the connecting gear sleeve 41, and the rotation of the helical gear long shaft 42 drives the meshing helical gear 43, short gear shaft 44, large gear 46, ratchet 47, small gear 48 and spline hole gear 49 in sequence to rotate, and the rotation of the spline hole gear 49 can drive the meshing lifting sprocket 52 to rotate, and the rotation of the lifting sprocket 52 can drive the front section of the chain 61, the lower hook 62 and the hoisted object to move upward, and at this time, the ratchet 47 will move the ratchet block 13 matched with it during the rotation process. 3 is pressed out of the ratchet groove, and the pawl block 133 is repeatedly clamped back into the ratchet groove of the ratchet wheel 47 by the elasticity of the pawl spring 132, so that the transmission module 4 is not restricted by the pawl portion 13 in the transmission of lifting the heavy object. When the motor 3 stops operating due to a fault and loses the drive of the motor 3, and the lifting sprocket 52 is about to rotate in the other direction by the weight of the lifting object and the chain 61, the pawl block 133 will clamp the ratchet wheel 47 to prevent it from reversing, so that the pawl portion 13 can limit the operation of the transmission module 4 in the other direction, and then the lifting sprocket 52 linked to the transmission module 4 cannot rotate in the other direction, thereby preventing the chain 61 from being decoupled and the lifting object from falling;

[0049] The electric hoist is protected by a load limiting component, and overload protection is achieved by adjusting the tightness of the load limiting nut 4504 at the top. When the cargo exceeds the weight set for the overload protection, the large gear 46 will slip, and the cargo cannot be lifted; the stop block of the brake seat 4501 is used to adjust the friction gap between the brake seat 4501 and the ratchet 47, and a little friction gap is required to achieve the descending function; the brake seat 4501 and the load limiting seat 4505 respectively arranged on both sides of the ratchet 47 cooperate with the brake seat disc spring 4502 to achieve the clamping and locking of the ratchet 47. When rising, the motor 3 drives the helical gear long shaft 42 to rotate, the helical gear long shaft 42 drives the helical gear 43 to rotate, the helical gear 43 drives the short gear shaft 44, and the short gear shaft 44 drives the large gear 46 to rotate. The rotation of the large gear 46 makes the brake seat 4501, the ratchet 47, and the load limiting seat 4505 become one, and the friction gap is closed, thereby driving the spline hole gear 49 to rotate, and the spline hole gear 49 then drives the lifting sprocket 52 to realize the rising function. Because there is a ratchet block 133, when the power is off, the goods will have a reverse force under the influence of gravity, and the friction gap is always closed, and the ratchet 47 cannot rotate in the opposite direction, that is, the direction of descent. Therefore, braking can be achieved and the goods will not fall freely. When descending, the motor 3 rotates in the opposite direction, driving the helical gear major shaft 42 to rotate, the helical gear major shaft 42 drives the helical gear 43 to rotate, the helical gear 43 drives the short gear shaft 44 to rotate, and the short gear shaft 44 drives the large gear 46 to rotate in the opposite direction, so that the brake seat 4501, the ratchet 47, and the load limit seat 4505 produce a certain gap, and the gap is always in an open state, thereby driving the spline hole gear 49 to rotate in the opposite direction. When descending, the ratchet 47 is restricted by the ratchet block 133 and does not rotate, so that the gap is always in an open state to achieve descent. When the power is off, the gap is instantly closed under the action of the gravity of the goods, so that the goods will not slide down. Position the lower part of the electric hoist to prevent it from swaying when carried. In addition, the scheme does not require external power supply, making the device lighter and easier to carry. The braking method is effective and has low cost. In addition, this braking method greatly reduces the weight of the electric hoist and facilitates the carrying and use of the electric hoist.

[0050] The chain box 71 for storing the positioning module 7 during carrying and displacement can store the rear section of the chain 61 of the lifting chain part 6, the rear limit ring 64 and the tail chain frame 63 to prevent the rear part of the lifting chain part 6 from swaying when the electric hoist is carried, and the tightening part 74 can cooperate with the iron sheet 72 and the positioning strip 73 to tie and fix the front part of the lifting chain part 6 and the handle of the remote control handle 2 to the chain box 71 to prevent the front part of the lifting chain part 6 and the remote control handle 2 from swaying when the electric hoist is carried. The operation is as follows: first, the damping rope 746 is pulled to the front side of the chain box 71. As the damping rope 746 is pulled forward, the rope housings 742 and the turntable 741 on both sides are rotated forward 90 degrees. At this time, the front part of the lifting chain part 6 and the handle of the remote control handle 2 are placed between the damping rope 746 and the chain box 71, and the damping rope 746 is loosened. After that, the springs 744 on both sides are expanded and reset, so that the shaft rod 743 drives the reel 745 to rotate and reel in the two ends of the damping rope 746, so that the reeled damping rope 746 binds the front part of the lifting chain part 6 and the handle of the remote control handle 2 to the front part of the chain box 71, and then adjusts the position of the magnetic blocks 747 on both sides, so that the magnetic blocks 747 are located at the front part of the lifting chain part 6 and the left and right sides of the remote control handle 2, and then the magnetic blocks 747 are clamped between a group of positioning bars 73 and adsorbed with the iron sheet 72, so as to prevent the damping rope 746 from falling and ensure the binding effect of the damping rope 746. Through the above operations, the lower part of the electric hoist can be positioned to prevent it from swaying when carrying. In combination with the present scheme, no external power supply is required to make the device lighter and easier to carry when in use.

[0051] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. The above are only preferred implementation methods of the utility model. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the utility model, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the protection scope of the utility model.

Claims

1. A lithium battery remote control electric hoist, comprising a main body (1), a remote control handle (2), a motor (3), a transmission module (4), a drive limit module (5) and a lifting chain (6), characterized in that: A remote control handle (2) is installed on the front side of the main body (1). The main body (1) comprises a base shell portion (11), a cover shell portion (12), and a ratchet portion (13). The base shell portion (11) comprises a main shell (111). A right shaft sleeve (112) is fixedly connected in a hole at the front side of the main shell (111). Upper and lower sides of the main shell (111) are provided with asymmetric mounting holes (113). An upper hook (114) is fixedly connected in an upper opening of the main shell (111). One of the left and right circular holes of the main shell (111) is provided with a right shaft sleeve (112). A clamping cavity (115) is provided in between, the pawl parts (13) are all installed at the mounting hole (113), the pawl parts (13) include a pin rod (131) rotatably connected to the mounting hole (113), a pawl block (133) is fixedly connected to the outer side of the left end of the pin rod (131), a pawl spring (132) is sleeved on the outer side of the pin rod (131), the left folded end of the pawl spring (132) is in contact with the pawl block (133), and the right folded end of the pawl spring (132) is in contact with the rib plate on the outer side of the mounting hole (113); The cover shell portion (12) comprises a cover body (121) detachably connected to the main shell (111) by bolts; a first left shaft sleeve (122) is fixedly connected in a rear hole inside the cover body (121); a second left shaft sleeve (123) is fixedly connected in a middle hole inside the cover body (121); a third left shaft sleeve (124) is fixedly connected in a front hole inside the cover body (121); a motor (3) is fixedly connected at the right circular hole of the base shell portion (11); a transmission module (4) and a drive limit module (5) are installed on the inner side of the main body (1); and a lifting chain portion (6) is installed at the drive limit module (5).

2. A lithium battery remote control electric hoist according to claim 1, characterized in that: The transmission module (4) comprises a connecting toothed sleeve (41) meshed with the spline of the drive shaft of the motor (3); the first left shaft sleeve (122) is rotatably connected to the inner side of a helical toothed long shaft (42) whose right end spline meshes with the connecting toothed sleeve (41); the left end of the helical toothed long shaft (42) is meshed with a helical gear (43); the inner side of the helical gear (43) is meshed with a short toothed shaft (44) whose left end is rotatably connected to the inner wall of the second left shaft sleeve (123); the third left shaft sleeve (122) is rotatably connected to the inner side of the second left shaft sleeve (123); A rotating shaft (45) is rotatably connected between the hole of the right shaft sleeve (112) and the right shaft sleeve (112); a large gear (46) meshingly connected to the short gear shaft (44) is fixedly connected to the outer side of the rotating shaft (45); a ratchet (47) matching with the pawl block (133) is fixedly connected to the right side of the large gear (46); a small gear (48) is fixedly connected to the right side of the ratchet (47); and a spline hole gear (49) sleeved on the outer side of the helical gear long shaft (42) is meshedly connected to the rear side of the small gear (48).

3. A lithium battery remote control electric hoist according to claim 2, characterized in that: A driving limit module (5) is installed on the inner side of the clamping cavity (115), and the driving limit module (5) includes a guide chain seat (51) fixedly connected to the inner wall of the clamping cavity (115), and a lifting sprocket (52) sleeved on the outer side of the helical gear major axis (42) is rotatably connected in the upper rotating seat of the guide chain seat (51), and the left end spline of the lifting sprocket (52) is meshed with the inner teeth of the spline hole gear (49), and the upper side of the guide chain seat (51) is detachably connected to a chain cover (53) by bolts, and the lower left and right sides of the guide chain seat (51) are provided with installation openings (54), and the installation openings The inner side of the chain guide seat (54) is detachably connected to a micro switch (55) by bolts, the lower side of the chain guide seat (51) is detachably connected to a spring sheet (56) by bolts, the lifting chain portion (6) includes a chain (61) passing through the cross grooves on both sides of the chain guide seat (51) and matching with the chain grooves of the lifting sprocket (52), the front lower end of the chain (61) is fixedly connected to a lower hook (62), the rear lower end of the chain (61) is fixedly connected to a tail chain frame (63), and the upper sides of the tail chain frame (63) and the lower hook (62) are both provided with a limiting ring (64) fixedly connected to the chain (61).

4. A lithium battery remote control electric hoist according to claim 3, characterized in that: The spring sheet (56) is composed of a middle plate and an elastic sheet arranged at an inclined angle. The elastic sheets of the spring sheet (56) are arranged on the lower side of the button of the micro switch (55). A spacing is arranged between the elastic sheets of the spring sheet (56) and the micro switch (55). The limiting ring (64) is arranged on the lower side of the elastic sheet of the spring sheet (56). The diameter of the limiting ring (64) is smaller than the width of the clamping cavity (115).

5. A lithium battery remote control electric hoist according to claim 3, characterized in that: The remote control handle (2) is composed of an electric wire box, wires, a handle and a lithium power source. The remote control handle (2) is electrically connected to the motor (3). The right end of the helical gear long shaft (42) is in contact with the drive shaft of the motor (3). The right end of the helical gear long shaft (42) is inserted into the connecting gear sleeve (41) by 50%. The inner wall of the lifting sprocket (52) is in contact with the outer curved surface of the rod body of the helical gear long shaft (42).

6. A lithium battery remote control electric hoist according to claim 3, characterized in that: A storage and positioning module (7) is installed at the lower rear side of the main body (1), and the storage and positioning module (7) includes a chain box (71) detachably connected to the main body (1) by bolts, the front end surface of the chain box (71) is fixedly connected to an iron sheet (72), and the front end surface of the iron sheet (72) is fixedly connected to positioning strips (73) twice at the upper and lower ends, and a tightening part (74) is installed at the chain box (71), and the tightening part (74) includes a turntable (741), and the left and right end surfaces of the chain box (71) are rotatably connected to the turntable (741), and the side of the turntable (741) away from the chain box (71) is fixedly connected to a rope housing (742), and the rope housing (742) is fixedly connected to the end surface of the chain box (71). The inner side is rotatably connected to a shaft rod (743), the outer side of the shaft rod (743) is fixedly connected to a spring spring (744) in a tightened state, the other end of the spring spring (744) is fixedly connected to the inner wall of the rope housing (742), the outer side of the shaft rod (743) is fixedly connected to a reel (745), the inner side of the rope housing (742) is provided with a through opening (748) located at the lower side of the reel (745), the outer side of a group of the reels (745) is fixedly connected to a damping rope (746) passing through the through opening (748) and bypassing the lower part of the chain box (71), and the outer side of the damping rope (746) is slidably connected to a group of two magnetic blocks (747).

7. A lithium battery remote control electric hoist according to claim 6, characterized in that: The rear section of the chain (61) and the tail chain frame (63) are both arranged on the inner side of the chain box (71), the spacing between a group of the positioning bars (73) is the same as the width of the magnetic block (747), the iron sheet (72) is arranged at the same height position of the rope housing (742), and both ends of the damping rope (746) are wound on the outer side of the reel (745).

8. A lithium battery remote control electric hoist according to claim 2, characterized in that: The rotating shaft (45) is provided with a brake assembly and a load limiting assembly. The ratchet (47) is slidably sleeved on the rotating shaft (45). The brake assembly includes a brake seat (4501) threadedly sleeved on the rotating shaft (45). A brake seat disc spring (4502) is sleeved on the brake seat (4501). A ratchet bushing (4503) is fixedly sleeved on the inner ring of the ratchet (47). The load limiting assembly includes a stop block, a load limiting pressure block, and a load limiting pressure block, which are located on a side of the large gear (46) away from the load limiting seat (4505) and are sleeved in sequence along the length direction of the rotating shaft (45). A plate (4507), a load-limiting disc spring (4508), and a load-limiting washer (4506); one end of the rotating shaft (45) is threadedly connected with a load-limiting nut (4504) abutting against the load-limiting washer (4506); a load-limiting seat (4505) is slidingly sleeved on the rotating shaft (45); the load-limiting seat (4505) and the brake seat (4501) are respectively located on both sides of the ratchet (47); the large gear (46) is slidingly sleeved on the load-limiting seat (4505); and the load-limiting pressure plate (4507) is threadedly connected to the load-limiting seat (4505).

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