CN113233363A

CN113233363A - Miniature electric hoist

Info

Publication number: CN113233363A
Application number: CN202110481215.XA
Authority: CN
Inventors: 黄建民; 王建科; 叶余滔
Original assignee: Bada Mechanical & Electrical Co ltd
Current assignee: Bada Electromechanical Co ltd
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2021-08-10
Anticipated expiration: 2041-04-30
Also published as: CN113233363B

Abstract

The invention relates to the technical field of hoisting equipment, in particular to a miniature electric hoist which comprises a guide rail, wherein the guide rail is fixedly connected with an installation seat through a connecting plate, the lower end of the installation seat is fixedly provided with a first motor, an output shaft of the first motor is provided with a winding mechanism, the installation seat is provided with an adjusting and retarding mechanism at the position on the left side of the winding mechanism, the output shaft of the first motor is connected with a winding constraint mechanism through a transmission mechanism, and the winding constraint mechanism is also provided with an auxiliary detection mechanism. Through the regulation retarding mechanism that sets up, can regulate and control the speed of rolling according to the highly reasonable of lifting heavy object, improve the security of the device when using, the rolling restraint mechanism that the cooperation set up simultaneously can carry out orderly range to wire rope's rolling and avoid disorderly wire winding, combines the supplementary detection mechanism that sets up, can carry out whole monitoring to wire rope in the rolling process, improves the security of the device when using.

Description

Miniature electric hoist

Technical Field

The invention relates to the technical field of hoisting equipment, in particular to a miniature electric hoist.

Background

The miniature electric hoist is one of the hoisting hoists, generally divided into a household miniature hoist and an industrial miniature hoist, and can also be divided into a steel wire rope miniature electric hoist and a ring chain miniature electric hoist.

The in-process that current miniature electric block was using, miniature electric block drives the in-process that the heavy object rose, the heavy object is located highly more highly high, the risk is big more, current miniature electric block remains throughout to go up and down at the uniform velocity, can not be according to the adjustment of the high reasonable speed of carrying on of hoist and mount heavy object, current miniature electric block is when using simultaneously, especially to wire rope miniature electric block, in-process in the use, can not carry out effectual direction to wire rope's receiving and releasing in-process, easily suffer the problem that is turbulent roll, there is certain potential safety hazard, simultaneously in the use, can not carry out whole monitoring to wire rope, make can not timely discovery and avoid when meetting the condition such as wire rope fracture, need to improve on the safety in utilization urgently.

Disclosure of Invention

Solves the technical problem

Aiming at the defects in the prior art, the invention provides a miniature electric block, which can effectively solve the problems that the existing miniature electric block in the prior art can not be adjusted in speed reasonably according to the height of a lifted weight and cannot effectively guide a steel wire rope in the winding and unwinding process during the use process, particularly for a steel wire rope miniature electric block, the turbulent winding is easily caused, certain potential safety hazards exist, the whole-process detection on the steel wire rope cannot be carried out during the use process, and the timely discovery and detection cannot be avoided when the steel wire rope is broken and the like in the use process, the problem of improvement in safety in use is urgently required.

Technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme:

the invention provides a miniature electric hoist, which comprises a guide rail for position adjustment, wherein the guide rail is fixedly connected with an installation seat through a connecting plate, the lower end of the installation seat is fixedly provided with a first motor, an output shaft of the first motor is provided with a winding mechanism, the installation seat is provided with an adjusting and speed-reducing mechanism at the position on the left side of the winding mechanism, the output shaft of the first motor is connected with a winding constraint mechanism through a transmission mechanism, and the winding constraint mechanism is also provided with an auxiliary detection mechanism.

Preferably, the winding mechanism comprises a driving shaft coaxially connected with an output shaft of the first motor, a winding wheel is sleeved on the driving shaft, and a steel wire rope is wound on the winding wheel.

Preferably, adjust retarding mechanism and include the rolling disc of being connected fixedly with the initiative axle, the spacing groove has radially been seted up to the outer wall of rolling disc, sliding connection has the connecting piece in the spacing groove, adjust retarding mechanism still including setting up in the inside dish of accepting of mount pad, accept the dish and be close to and seted up continuous helicla flute on the outer wall of rolling disc one side, just the helicla flute is linear increase along the radial degree of depth of accepting the dish, helicla flute and spacing groove carry on spacingly to the connecting piece simultaneously.

Preferably, the connecting piece is connected the rolling disc with accept the dish, just the connecting piece comprises telescopic link and clutch blocks, the telescopic link passes through one of fixed mounting round piece and the helicla flute sliding fit on one end, clutch blocks outer wall and spacing inslot wall frictional contact.

Preferably, the rolling constraint mechanism comprises two gears, a ring-shaped rack, a connecting block, a moving block and a guide block; the two gears are connected through a ring-shaped rack, one of the gears is connected with an output shaft of the first motor through a transmission mechanism, the ring-shaped rack is fixedly connected with a moving block through a connecting block, the connecting block is fixedly connected with the ring-shaped rack, the connecting block is in sliding fit with a vertical groove formed in the moving block, sliding blocks are fixedly connected to two ends of the moving block, the sliding blocks are in sliding fit with guide grooves formed in a mounting seat, the moving block is fixedly connected with the guide block, and the lower end of the guide block is rotatably connected with a pulley and is located in contact with the outer wall of the steel wire rope.

Preferably, the auxiliary detection mechanism is composed of detection parts which are symmetrically arranged up and down and a fixing part which is positioned in the middle of the two detection parts, the detection part positioned on the upper side is fixedly connected with the guide block, a through hole is formed in the middle of the detection part in a penetrating manner, the position of the through hole corresponds to that of the pulley, an annular groove is formed in the position, inside the detection part, of the outer side of the through hole, a ring-shaped contact part is connected in the annular groove in a sliding manner, the outer end of the ring-shaped contact part is fixedly connected with the inner wall of the annular groove through an elastic part, and a trigger switch is fixedly installed in the position, on the same side of the elastic part, in the annular groove; the clamping groove is formed in the middle of the fixing piece corresponding to the through hole, the speed sensor is arranged on the inner wall of the clamping groove, the two placing grooves are symmetrically formed in the outer wall of the clamping groove, clamping blocks are arranged in the placing grooves, and the clamping blocks are controlled through a micro air cylinder fixedly installed in the placing grooves.

Preferably, the speed sensor and the trigger switch are both electrically connected with the control mechanism of the microcylinder.

Advantageous effects

Compared with the known public technology, the technical scheme provided by the invention has the following beneficial effects:

according to the invention, through the arranged speed-reducing adjusting mechanism, in the process of lifting a heavy object by the electric hoist, the winding speed can be reasonably regulated according to the height of the lifted heavy object, so that the safety of the device in use is improved, meanwhile, the winding restraining mechanism is arranged in a matching manner, the winding of the steel wire rope can be orderly arranged, the disordered winding is avoided, the accident risk is reduced, the service life of the steel wire rope is prolonged, the whole-course monitoring of the steel wire rope in the winding process can be carried out by combining the arranged auxiliary detection mechanism, the power supply of the motor can be timely disconnected and the speed-reducing operation of the steel wire rope can be realized through the arranged fixing piece, and the safety of the device in use is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an exploded view of the overall structure of the present invention;

FIG. 3 is a schematic diagram of the overall structure explosion side structure of the present invention;

FIG. 4 is a schematic view of the overall structure of the rolling restraining mechanism of the present invention;

FIG. 5 is a schematic structural diagram of an adjusting and retarding mechanism according to the present invention;

FIG. 6 is a schematic cross-sectional view of the receiving tray according to the present invention;

FIG. 7 is a schematic diagram of the overall explosive structure of the auxiliary detection mechanism of the present invention;

FIG. 8 is a schematic view of the present invention showing a broken steel wire touching a ring-shaped contact member;

the reference numerals in the drawings denote: 1. a guide rail; 2. a connecting plate; 3. a first motor; 4. a winding mechanism; 401. a drive shaft; 402. a winding wheel; 5. a wire rope; 6. adjusting a retarding mechanism; 601. rotating the disc; 602. a limiting groove; 7. a bearing plate; 8. a connecting member; 801. a telescopic rod; 802. a friction block; 9. a helical groove; 10. a transmission mechanism; 11. a winding restraint mechanism; 1101. a ring-shaped rack; 1102. a gear; 12. connecting blocks; 13. a moving block; 1301. a vertical slot; 1302. a slider; 14. a guide block; 1401. a pulley; 15. an auxiliary detection mechanism; 16. a detection member; 1601. a through hole; 1602. an annular groove; 17. a fixing member; 1701. a clamping groove; 1702. a placement groove; 18. a ring-shaped contact; 1801. an elastic member; 1802. a trigger switch; 19. a clamping block; 20. a speed sensor.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The present invention will be further described with reference to the following examples.

Example (b): miniature electric block, including the guide rail 1 that is used for carrying out the position adjustment, guide rail 1 passes through 2 fixedly connected with mount pads of connecting plate, the lower extreme fixed mounting of mount pad has first motor 3, install winding mechanism 4 on first motor 3's the output shaft, the mount pad is located the left position of winding mechanism 4 and is provided with regulation retarding mechanism 6, first motor 3's output shaft is connected with rolling restraint mechanism 11 through drive mechanism 10, still be equipped with supplementary detection mechanism 15 on the rolling restraint mechanism 11.

According to the attached drawing 1, when the device is used, the set first motor 3 and the fixed connection relationship between the output shaft of the first motor 3 and the winding wheel 402 can drive the winding wheel 402 to wind the steel wire rope 5, the set first motor 3 is a servo motor, the output shaft of the motor can rotate forward and backward, and the steel wire rope 5 can be tightened and loosened by controlling the rotation of the winding wheel 402 in the forward and backward rotating process.

According to the illustration in fig. 2, in the actual working process of the winding mechanism 4, the winding wheel 402 can be controlled by controlling the forward and reverse rotation of the first motor 3, the winding mechanism 4 comprises a driving shaft 401 coaxially connected with the output shaft of the first motor 3, the driving shaft 401 is sleeved with the winding wheel 402, the winding wheel 402 is wound with the steel wire rope 5, in the winding process, it is worth explaining that the outer wall of the winding wheel 402 can be spirally and linearly provided with an arc-shaped groove, the purpose of the method is to ensure that the steel wire rope 5 wound on the winding wheel 402 in a ring shape has a certain track to limit in the initial winding process of the steel wire rope 5, meanwhile, the fixed end of the steel wire rope 5 is always fixedly connected to the outer wall of the winding wheel 402, and the position of the steel wire rope 5 close to the fixed end is coated with a warning color, and the purpose of the method is to use, the rope can remind a user of the use limit of the rope so as to make adjustment in time and improve the use safety.

With reference to fig. 4-5, in the actual use process of the device, the first motor 3 drives the winding wheel 402 to wind, and the winding wheel 402 rotates synchronously during the height raising process, and during the rotation process, the speed regulation and reduction mechanism 6 includes a rotating disc 601 fixedly connected to the driving shaft 401, and can drive the rotating disc 601 to rotate due to the fixed connection between the rotating disc 601 and the driving shaft 401, and during the rotation process, the connecting piece 8 slides in a limiting groove 602 formed on the outer wall of the rotating disc 601, and the sliding direction of the connecting piece slides in the radial direction from the center of the rotating disc 601, the outer wall of the rotating disc 601 is provided with a limiting groove 602 in the radial direction, the limiting groove 602 is connected with the connecting piece 8 in a sliding manner, and the speed regulation and reduction mechanism 6 further includes a bearing disc 7 arranged inside the mounting seat, the outer wall of the bearing disc 7, close to one side of the rotating disc 601, is provided with a continuous spiral groove 9, the radial depth of the spiral groove 9 is linearly increased along the radial direction of the bearing disc 7, and the spiral groove 9 and the limiting groove 602 simultaneously limit the connecting piece 8;

it is worth to be noted that, when the winding wheel 402 winds the steel wire rope 5, the rotating disc 601 is driven to synchronously rotate, and the rotating disc 601 is connected and fixed with the receiving disc 7 through the connecting piece 8, when the connecting piece 8 slides in the limiting groove 602, the connecting piece 8 slides in the spiral groove 9 synchronously, and because the spiral groove 9 linearly increases along the radial depth of the receiving disc 7, that is, when the connecting piece 8 slides outwards in the limiting groove 602, the sliding process is affected by the spiral groove 9, and in the process, the length of the connecting piece 8 is gradually shortened;

according to the illustration in fig. 5, when the winding wheel 402 is used for changing the connecting member 8 during the winding process and the rotating disc 601 rotates to drive the connecting member 8, the connecting member 8 connects the rotating disc 601 and the receiving disc 7, and the connecting member 8 is composed of the telescopic rod 801 and the friction block 802, the telescopic rod 801 is slidably fitted with the spiral groove 9 through the circular block fixedly installed at one end, the outer wall of the friction block 802 is in frictional contact with the inner wall of the limiting groove 602, because the length of the connecting member 8 is shortened, and the telescopic rod 801 in the connecting member 8 can be composed of two sleeve rods which keep sliding relative to each other and an elastic connecting member connected between the middle parts of the two sleeve rods, which aims to increase the frictional resistance between the telescopic rod 801 and the limiting groove 602 when the length of the telescopic rod 801 is changed, that is, in the present invention, that is, during the winding and lifting of heavy objects, the friction block 802 on the telescopic rod, and then the rotating speed of the winding wheel 402 can be slowed down under the condition that the first motor 3 runs at rated power, so that the lifting speed is slowed down when the heavy object is lifted, and the safety of the device in use is improved.

According to the illustration in fig. 3, the winding constraint mechanism 11 includes two gears 1102, a ring-shaped rack 1101, a connecting block 12, a moving block 13, and a guide block 14; the two gears 1102 are connected through a ring-shaped rack 1101, one gear 1102 is connected with an output shaft of the first motor 3 through a transmission mechanism 10, the ring-shaped rack 1101 is connected and fixed with a moving block 13 through a connecting block 12, the connecting block 12 is connected and fixed with the ring-shaped rack 1101, the connecting block 12 is in sliding fit with a vertical groove 1301 arranged in the moving block 13, both ends of the moving block 13 are fixedly connected with sliders 1302, the sliders 1302 are in sliding fit with guide grooves arranged in an installation seat, the moving block 13 is fixedly connected with a guide block 14, the lower end of the guide block 14 is rotatably connected with a pulley 1401, the pulley 1401 is positioned at the outer wall of the steel wire rope 5, and due to the connection relationship that one gear 1102 is connected with the output shaft of the first motor 3 through the transmission mechanism 10, the purpose is that when the device is used, the output shaft of the first motor 3 can drive the coaxially connected driving shaft 401 to rotate, the driving shaft 401 can penetrate through the winding wheel 402 and is connected with the other end of the mounting seat, the input end of the transmission mechanism 10 is the driving shaft 401, one of the gears 1102 can be driven to rotate through the arranged transmission mechanism 10, the arranged annular rack 1101 can be driven to rotate through the meshed connection relationship between one of the gears 1102 and the annular rack 1101, and it is worth explaining that the moving track of the annular rack 1101 can be effectively limited through the limiting groove arranged in the mounting seat, and the annular rack 1101 can be synchronously driven to move due to the fixed connection relationship between the arranged annular rack 1101 and the connecting block 12, and due to the sliding fit relationship between the connecting block 12 and the inner wall of the vertical groove 1301 arranged in the moving block 13, when the connecting block 12 moves along the track of the annular rack 1101, due to the space of the vertical groove 1301 arranged in the vertical direction, when the connecting block 12 is adjusted in position in the vertical direction, the moving block 13 can be ensured, the moving direction is finally converted into the movement in the horizontal direction, correspondingly, in the process of winding the steel wire rope 5, the moving track of the moving block 13 in the horizontal direction corresponds to the axial distance on the winding wheel 402, the moving track of the connecting block 12 is fixed, in the process of paying off, the same track can be followed, the reverse movement is carried out, the opposite direction of the steel wire rope 5 is ensured, and the orderly arrangement of the steel wire rope 5 in the winding process is ensured.

According to the drawings of fig. 3 and 6, two detection pieces 16 are provided, so that when the device is in a process of winding and unwinding a steel wire rope 5, the arranged steel wire rope 5 always passes through the through hole 1601, and further in an actual use process, because the steel wire rope 5 is formed by twisting and winding a plurality of strands of single steel wires, a phenomenon that a single steel wire is broken may occur in the actual use process, through the arranged annular contact piece 18, in the winding process, the broken steel wire is extruded in the annular groove 1602, and after being extruded to a certain degree, the annular contact piece 18 is driven to move, and finally the trigger switch 1802 works, the auxiliary detection mechanism 15 is composed of the detection pieces 16 which are symmetrically arranged up and down and the fixing piece 17 which is positioned in the middle of the two detection pieces 16, the detection piece 16 which is positioned on the upper side is fixedly connected with the guide block 14, the through hole 1601 is formed in the middle of the detection piece 16, the position of the through hole 1601 corresponds to the position of the pulley 1401, an annular groove 1602 is formed in the position, located inside the detection piece 16, outside the through hole 1601, the annular contact piece 18 is connected in the annular groove 1602 in a sliding manner, the outer end of the annular contact piece 18 is fixedly connected with the inner wall of the annular groove 1602 through an elastic piece 1801, and a trigger switch 1802 is fixedly installed at the position, located on the same side as the elastic piece 1801, inside the annular groove 1602;

according to the drawing shown in fig. 6, through the set fixing piece 17, the purpose is that in the winding process of the steel wire rope 5, when the steel wire breakage is detected or the winding speed of the steel wire rope 5 is detected to be abnormal through the set speed sensor 20 by the set detection mechanism, the steel wire rope 5 can be clamped slowly through the set clamping block 19, the safety of the miniature electric hoist in use is improved, the clamping groove 1701 is formed in the middle of the fixing piece 17 corresponding to the through hole 1601, the speed sensor 20 is arranged on the inner wall of the clamping groove 1701, the two placing grooves 1702 are symmetrically formed in the outer wall of the clamping groove 1701, the clamping block 19 is arranged in the placing groove 1702, and the clamping block 19 is controlled through the miniature cylinder fixedly mounted in the placing groove 1702.

It should be noted that, by providing the speed sensor 20 and the trigger switch 1802 in electrical connection with the control mechanism of the microcylinder, and the relation of series control is adopted, the set trigger switch 1802 is triggered when the steel wire rope 5 has a plurality of steel wire fractures, the speed sensor 20 detects the speed of the steel wire rope 5 in the winding process, the steel wire rope 5 is fixed and slowed down in time through the arranged fixing piece 17, specifically, the detected speed is converted into a digital quantity through the A/D converter through the arranged speed sensor 20, the micro cylinder is controlled through the controller arranged in the fixing piece 17, and then drive the centre gripping piece 19 that sets up and realize the slow speed and realize the centre gripping to wire rope 5, this controller or trigger switch 1802 can make the first motor 3 that sets up cut off the power supply simultaneously.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not cause the essence of the corresponding technical solutions to depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. Miniature electric block, including guide rail (1) that is used for carrying out position adjustment, guide rail (1) is through connecting plate (2) fixedly connected with mount pad, its characterized in that, the lower extreme fixed mounting of mount pad has first motor (3), install winding mechanism (4) on the output shaft of first motor (3), the mount pad is located the left position of winding mechanism (4) and is provided with regulation retarding mechanism (6), the output shaft of first motor (3) is connected with rolling restraint mechanism (11) through drive mechanism (10), still be equipped with supplementary detection mechanism (15) on rolling restraint mechanism (11).

2. The miniature electric hoist according to claim 1, wherein said winding mechanism (4) comprises a driving shaft (401) coaxially connected to the output shaft of the first motor (3), a winding wheel (402) is sleeved on said driving shaft (401), and a steel wire rope (5) is wound on said winding wheel (402).

3. The miniature electric hoist according to claim 2, wherein the speed-reducing regulating mechanism (6) comprises a rotating disc (601) fixedly connected with the driving shaft (401), a limiting groove (602) is radially formed in the outer wall of the rotating disc (601), a connecting piece (8) is slidably connected in the limiting groove (602), the speed-reducing regulating mechanism (6) further comprises a bearing disc (7) arranged inside the mounting seat, a continuous spiral groove (9) is formed in the outer wall of the bearing disc (7) close to one side of the rotating disc (601), the spiral groove (9) is linearly increased along the radial depth of the bearing disc (7), and the spiral groove (9) and the limiting groove (602) simultaneously limit the connecting piece (8).

4. The miniature electric hoist as claimed in claim 3, wherein said connecting member (8) connects said rotating disc (601) and said receiving disc (7), and said connecting member (8) is composed of a telescopic rod (801) and a friction block (802), said telescopic rod (801) is slidably fitted with said spiral groove (9) through a circular block fixedly mounted on one end, and the outer wall of said friction block (802) is in frictional contact with the inner wall of said limit groove (602).

5. The miniature electric hoist according to claim 1, wherein said rolling constraint mechanism (11) comprises two gears (1102), a circular rack (1101), a connecting block (12), a moving block (13), a guide block (14); the two gears (1102) are connected through a ring-shaped rack (1101), one gear (1102) is connected with an output shaft of the first motor (3) through a transmission mechanism (10), the ring-shaped rack (1101) is fixedly connected with a moving block (13) through a connecting block (12), the connecting block (12) is fixedly connected with the ring-shaped rack (1101), the connecting block (12) is in sliding fit with a vertical groove (1301) formed in the moving block (13), two ends of the moving block (13) are fixedly connected with sliding blocks (1302), the sliding blocks (1302) are in sliding fit with guide grooves formed in an installation seat, the moving block (13) is fixedly connected with a guide block (14), the lower end of the guide block (14) is rotatably connected with a pulley (1401), and the pulley (1401) is located and is in contact with the outer wall of the steel wire rope (5).

6. The miniature electric block according to claim 5, wherein said auxiliary detecting mechanism (15) is composed of detecting members (16) arranged symmetrically up and down and a fixing member (17) located at the middle of the two detecting members (16), said detecting member (16) located at the upper side is fixedly connected with the guide block (14), a through hole (1601) penetrates through the middle part of the detection piece (16), the position of the through hole (1601) corresponds to the position of the pulley (1401), an annular groove (1602) is formed in the position, located inside the detection piece (16), on the outer side of the through hole (1601), the annular groove (1602) is connected with the annular contact element (18) in a sliding way, the outer end of the annular contact element (18) is fixedly connected with the inner wall of the annular groove (1602) through an elastic element (1801), a trigger switch (1802) is fixedly arranged at the same side of the elastic piece (1801) in the annular groove (1602); the clamping device is characterized in that a clamping groove (1701) is formed in the middle of the fixing piece (17) corresponding to the through hole (1601), a speed sensor (20) is arranged on the inner wall of the clamping groove (1701), two placing grooves (1702) are symmetrically formed in the outer wall of the clamping groove (1701), a clamping block (19) is arranged in each placing groove (1702), and the clamping block (19) is controlled through a micro cylinder fixedly mounted inside each placing groove (1702).

7. The micro electric hoist according to claim 6, characterized in that said speed sensor (20) and said trigger switch (1802) are electrically connected to the control mechanism of the micro cylinder.