WO2018232865A1

WO2018232865A1 - Smart manual hoist

Info

Publication number: WO2018232865A1
Application number: PCT/CN2017/096463
Authority: WO
Inventors: 苗鑫; 梁荣
Original assignee: 慈溪捷豹起重机械有限公司
Priority date: 2017-06-23
Filing date: 2017-08-08
Publication date: 2018-12-27
Also published as: CN107218991A

Abstract

Disclosed is a smart manual hoist, comprising a hoist body (1), an upper hook (13) fixed at an upper end of the hoist body (1), a chain (15) provided on the hoist body (1), a driving mechanism driving the movement of the chain, and a lower hook (16) fixed at one end of the chain, and further comprising a gravitational force sensing device capable of sensing the gravitational force borne by the lower hook (16). the gravitational force sensing device comprising a pin shaft type force sensor (2), a circuit board (5) electrically connected to the pin shaft type force sensor (2) and a display screen (9) electrically connected to the circuit board (5), the hoist body (1) comprising a machine frame (14) and a chain hood covering the outside of the machine frame (14), the outside of the chain hood further being provided with an electric appliance hood, the circuit board (5) being provided in the electric appliance hood, and the display screen (9) being provided on a surface of the electric appliance hood.By means of the gravitational force sensing device providing a display of the gravitational force of the cargo, when the load and the number of times of usage exceed a rated value, both will be prompted, and the whole structure is provided rationally.

Description

Intelligent manual hoist technical field

The present invention relates to a manual hoist.

Background technique

[0002] Manual hoists are used to lift heavy objects, which are widely used in industrial and mining enterprises, storage terminals, ship construction, bridge construction, film and television scene erection, transmission line erection and other places. Existing manual hoists are divided into multiple sizes according to the range of load that can be withstood (eg 0.25t, 0.5t, It 1.5t, 2t, 3t, 5t, 6t, 9t)

, lOt, etc.), the user will choose the corresponding specification of the hoist according to the weight of the commonly used goods, but in actual use, the actual weight of the goods is often unknown. In some cases, the weight of the goods will exceed the rated load of the hoist, and the overload will be repeated many times. It will easily cause a certain force of the hoist to suddenly break, resulting in a safety accident. Some users frequently use the hoist, but it is not clear that the use of the hoist exceeds the service life. It is easy to cause a force-bearing part of the hoist to suddenly break due to fatigue. It is also unclear what needs to be maintained for the hoist without replacement. Brake consumables are also prone to safety accidents during use.

technical problem

In order to overcome the above-mentioned deficiencies in the prior art, the present invention provides a manual hoist having an intelligent display function.

Problem solution

Technical solution

[0004] The technical solution of the present invention to solve the technical problem thereof is:

[0005] A smart manual hoist comprising a hoist body, an upper hook fixed to an upper end of the hoist body, a chain disposed on the hoist body, a driving mechanism for driving the chain movement, and a lower hook fixed at one end of the chain, wherein: a gravity sensing device capable of sensing the weight of the lower hook, wherein the gravity sensing device comprises a pin type load cell, a circuit board electrically connecting the pin type load cell, and a display screen electrically connecting the circuit board, The hoist body includes a frame and a chain cover that is disposed outside the frame, and an electric cover is disposed outside the chain cover. The circuit board is disposed in the electric cover, and the display screen is disposed on the surface of the electric cover.

[0006] Preferably, the pin type load cell is disposed through the frame and the upper hook, the pin type load cell The two ends are fixed on the frame, and the part of the force sensing portion is connected to the upper hook.

[0007] Preferably, the frame is fixed with a contact elastic piece electrically connected to the pin type load cell, and the inner wall of the chain cover is fixed with a contact patch electrically connecting the circuit board, the contact patch and the contact elastic piece. The contact electrical connection is achieved by the chain cover being placed on the frame.

[0008] Preferably, a hook-and-loop card is fixed on the frame, a rectangular hole is formed on the hook-axis card board, and an upper end surface of the rectangular hole is connected with an arc-shaped hole, and the pin-type load cell comprises a pin body. A pin-shaped plane is disposed in a middle portion of the pin main body, and one shoulder is disposed at one end, and a shoulder is communicated with the lack-round plane through a groove, and the shoulder on the pin main body is inserted into a rectangular hole of the hook shaft card plate The strained plane is provided with a strain gauge, and the strain gauge is connected to the wire, and the wire is pierced through the groove and passes through the curved hole.

[0009] Preferably, the circuit board is electrically connected to the touch switch, the drive mechanism comprises a drive wheel that rotates synchronously with the chain, the outer surface of the drive wheel is provided with a boss, and the drive wheel rotates to drive the boss to abut the connection Touched.

[0010] Preferably, the electrical cover has a side opening, a battery box pressing plate is fixed in the mouth, an elastic top pin is arranged on the battery box pressing plate, and a battery box is inserted into the space formed between the battery box pressing plate and the side wall of the mouth. The elastic top pin is used for limiting.

[0011] Preferably, the battery case is electrically connected to the power generating device, and the spindle of the power generating device is connected to the driving mechanism.

[0012] Preferably, the electrical cover is provided with a slope, the display screen is embedded on the inclined surface and the cover is provided with a transparent plate

An indicator light is disposed on the circuit board, the indicator light is disposed through the inclined surface, and the sound generator is disposed on the circuit board.

[0013] Preferably, the battery case includes a battery case, a battery disposed in the battery case, and a battery cover disposed above the battery, and a connection plug electrically connected to the battery is disposed at a tail end of the battery case.

[0014] Preferably, the circuit board includes a gravity calculation module, a load comparison module, and a counting module.

[0015] The intelligent manual hoist includes a hoist body, an upper hook fixed to the upper end of the hoist body, a chain disposed on the hoist body, a driving mechanism for driving the chain movement, and a lower hook fixed at one end of the chain. There are two ways to drive the drive, one is the handle drive, and the other is the chain drive.

[0016] Also included is a gravity sensing device for sensing the weight of the weight on the lower hook and performing processing calculations on the circuit board to perform display on the display screen. Hoist body including rack and chain The strip cover, the application is further provided with an electric cover on the outer side of the chain cover, the circuit board is disposed in the electric cover, and the display screen is disposed on the surface of the electric cover.

[0017] In the present application, the pin type load cell is disposed at the upper hook position, and may of course be disposed at the lower hook position. The pin type load cell is disposed through the frame and the upper hook, and is fixed to the frame through the two ends, wherein the pin portion The pressure sensing portion provided with the strain gauge is connected with the upper hook, and after the lower hook is subjected to a certain gravity, the corresponding gravity is also received at the upper hook position, the strain gauge is subjected to pressure strain, and the parameters are transmitted to the circuit board, and the circuit board passes the gravity calculation module. After processing the calculation, the gravity is displayed on the display.

[0018] The electrical connection between the circuit board and the pin type load cell is realized by contacting the elastic piece and the contact patch, and the contact elastic piece is disposed on the outer side of the frame, the contact elastic piece is provided with a bending part, and the inner wall of the chain cover is fixed with the contact sticker. When the chain cover is disposed on the frame, the contact patch contacts the bent portion of the contact elastic piece, that is, the two realize the contact electrical connection. There are four contact springs, which are connected to the four terminals of the pin type force sensor through four wires.

[0019] When the entire circuit is initially turned on for operation, it is realized by touching the switch, and the touch switch is disposed on the electric device cover and electrically connected to the circuit board to control the on and off of the circuit board. The driving mechanism includes a driving wheel that rotates synchronously with the chain. The driving wheel surface is provided with a boss. When the driving platform rotates the driving wheel, the driving boss abuts the connection and touches the switch to realize the conduction of the circuit board. That is, if a heavy object is lifted or lowered, the board will be turned on. After the handle is driven, the driving wheel is a reversing brake wheel that drives the driving shaft to rotate. When the handle chain is driven, the driving wheel is a hand wheel that drives the driving shaft to rotate.

[0020] The surface of the electric appliance cover is provided with a slope surface, a display screen is arranged on the inclined surface, an indicator light is also worn, one side of the electric appliance cover is smashed, a battery box pressure plate is fixed in the mouthpiece, and an elastic top pin is arranged on the battery box pressure plate, the battery box It is inserted into the space formed between the battery case platen and the side wall of the cornice. Moreover, the battery case is inserted into the crucible, and the elastic top pin is pressed down to facilitate the insertion thereof. After the insertion, the elastic top pin is elastically reset to limit the battery case. The battery case is electrically connected to a power generating device. The end surface of the main shaft of the power generating device is provided with a U-shaped groove, and the U-shaped groove is engaged with the end of the driving shaft of the driving mechanism to form a connection relationship, and the driving shaft drives the main shaft to rotate, thereby realizing power generation of the power generating device.

[0021] The intelligent manual hoist of the present invention uses a cymbal, hooked on the fixed end, hooks the cargo underneath, and pulls or pulls the handle of the driving mechanism or the chain by hand to drive the reversing brake wheel or the hand wheel to rotate. In turn, the drive drives the chain to move, so that the cargo rises or falls, the drive mechanism moves, and drives. The rotation of the shaft drives the spindle of the power generating device to rotate, and the power generating device outputs a current to charge the battery. The rotation of the reversing brake wheel or the bracelet wheel causes the boss on the outer surface to continuously press and touch, and the chip on the control circuit board obtains a pulse current to start the circuit. Colleagues, the strain gauge on the pin-type sensor is powered, and the electrical signal is output. The system automatically detects whether the circuits and related components are working normally. If everything is normal, the indicator light is green, and the display screen in green shows the maximum historical lifting. Load, number of times of lifting the cargo, actual load. When the cargo is off the ground, the pin-type sensor connected between the hook and the frame is deformed by force, causing deformation of the strain gauge, and the change of the weight of the weight is linear with the magnitude of the force of the cross-section shaft sensor. The force of the sensor is linear with the output signal of the strain gauge. The electrical signal is processed by the circuit board to obtain the weight data of the cargo and output to the display. The load comparison module compares the actual load with the rated load. When the detected cargo weight is greater than the rated load of the hoist, the display shows a red number, the display light emits intermittent red light, and the same sounder emits a beep, prompting the user that Overloaded. When the detected load is greater than the maximum load recorded in the past, the system will actually refresh the load of this record. When the system detects a continuous load until the load becomes zero, that is, the hoist lifts the load to the unloading of the goods for one cycle, the counting module automatically accumulates the number of uses once and records it in the chip, which will be automatically displayed the next time the machine is turned off. When the machine is turned on, the number of uses is greater than the number of maintenance presets, the indicator light shows yellow light, and the same display panel also displays yellow data.

Advantageous effects of the invention

Beneficial effect

[0022] The beneficial effects of the present invention are as follows: The present invention realizes the ability to display the gravity of the cargo by the setting of the gravity sensing device, and when the load exceeds the rated value and the number of uses exceeds the rated value, the prompt is given, and the gravity is transmitted. Reasonable setting of the sensing device, reasonable electrical connection between the various components, and reasonable overall structure.

Brief description of the drawing

DRAWINGS

1 is a partial structural schematic view of the present invention.

2 is a schematic view of a partial exploded structure of the present invention.

3 is a schematic view of another exploded structure of the present invention.

4 is a schematic view showing another angle structure of FIG. 3. 5 is a partial exploded view of the structure of FIG. 1.

6 is a partial cross-sectional structural view of the present invention.

7 is a schematic structural view of a battery case of the present invention.

8 is a schematic structural view of a pin type load cell.

[0031] FIG. 9 is a schematic structural view of a hook shaft card.

BEST MODE FOR CARRYING OUT THE INVENTION

[0032] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0033] As shown in FIG. 1, 2, 3, 4, and 5, the intelligent manual hoist includes a hoist body 1, an upper hook 13 fixed on the upper end of the hoist body, a chain 15 disposed on the hoist body, and a drive for driving the chain. The mechanism and the lower hook 16 fixed at one end of the chain. There are two ways to drive the drive, one is the handle drive, and the other is the hand chain drive.

[0034] The intelligent manual hoist also includes a gravity sensing device including a pin type load cell 2 for sensing the weight of the weight on the lower hook, and performing processing calculations and the like through the circuit on the circuit board 5. Display is performed on the display 9. The hoist body includes a frame 14 and a chain cover 10. The present application further provides an electrical cover on the outside of the chain cover. The circuit board 5 is disposed in the electrical cover, and the display 9 is disposed on the surface of the electrical cover. The circuit board includes a gravity calculation module, a load comparison module, and a counting module.

[0035] As shown in FIG. 8, the pin-type load cell 2 is provided with a lack of a circular plane at the middle portion, and a convex shoulder is provided at one end, and the shoulder and the missing plane are communicated through the groove, and the circular plane is attached. The strain gauge 36 is coated with a special solid glue above the strain gauge, and the strain gauge 36 has four terminals. The strain gauge passes through the wire through the wire and outputs four wires from the end face of the pin type load cell.

[0036] As shown in FIG. 9, the hook shaft card 38 is fixed on the frame, and a rectangular hole is arranged in the middle portion, and an arc hole is arranged in the upper end surface of the rectangular hole. After assembly, the upper and lower sides of the rectangular hole are stuck in the pin type. The end face of the load cell has a radial positioning pin on the shoulder of the end face, and the four wires of the pin type load cell pass through the arc hole of the hook plate.

[0037] In the present application, the pin type load cell is disposed at the position of the upper hook 13 , and may of course be disposed at the position of the lower hook 16 . The pin type load cell is disposed through the frame and the shaft hole of the upper hook and is fixed to the frame 14 . On the upper part, the pressure sensing part provided with the strain gauge is connected with the upper hook, and the lower hook is subjected to a certain gravity, and the corresponding hook is attached. The position also bears the same gravity, the strain gauge 36 is subjected to pressure strain, and its parameters are transmitted to the circuit board. The circuit board processes the calculation by the gravity calculation module and displays the gravity through the display screen.

[0038] As shown in FIGS. 5 and 6, the electrical connection between the circuit board and the pin type load cell is realized by contacting the elastic piece 29 and the contact patch 28. The contact elastic piece 29 is disposed on the outer side of the frame, and the contact elastic piece is set to be bent. a contact patch 28 is fixed on the inner wall of the chain cover. The contact patch is provided with a contact copper layer, and the copper layer is connected to the connector. The connector is connected to the circuit board through a wire, and the chain cover is disposed on the frame 14. The contact patch contacts the bent portion of the contact spring, that is, the two achieve a contact electrical connection. There are four contact springs, which are connected to the four terminals of the pin type load cell by four wires.

[0039] When the entire circuit is initially turned on, the operation is performed by touching the switch 3. The touch switch is disposed on the electric cover and electrically connected to the circuit board to control the on and off of the circuit board. The touch is mounted on the shackle, and the sill is designed in an L shape, and the bottom end is fixed to the inside of the electric cover by two screws. Two wires are connected to the terminal that touches the switch, and the other ends of the two wires are connected to the circuit board. As shown in FIG. 1 , the driving mechanism includes a driving wheel that rotates synchronously with the chain. The driving wheel surface is provided with a boss 32. When the boss 32 touches the touched portion of the switch, when the driving wheel rotates, the driving boss resists the connection and touches the switch. , to achieve the conduction of the board, that is, if there is a heavy object to carry out the lifting or lowering work, the circuit board will be turned on. In the handle drive, the drive wheel is a reverse brake wheel that drives the drive shaft to rotate. When the handle chain is driven, the drive wheel is a hand wheel that drives the drive shaft to rotate.

[0040] As shown in FIG. 3, the surface of the electric appliance cover is provided with a sloped surface, and the inclined surface is provided with a rectangular hole and a small circular hole. The display screen 9 passes through the rectangular hole, and the rectangular hole is covered with a transparent plate 27, and the small circular hole is worn inside. There is an indicator light 25. The indicator light 25 is stuck on the lamp pressing plate 24, and the lamp pressing plate is designed in a Z shape, and is fixed to the inner side of the inclined surface of the electric cover by a screw. The end of the indicator light is connected to two wires, and the other ends of the two wires are connected to the circuit board. A sounder 4 is also provided on the board. A side cover 11 of the electric appliance cover is fixed with a battery box pressing plate 23, a resilient top pin 21 is arranged on the battery box pressing plate, a compression spring 20 is arranged on the rear side of the spring top pin, and a spring seat 22 is arranged on the rear side of the compression spring. It is fixed to the electric cover by screws together with the battery case pressure plate. The battery case 26 is inserted into the space formed between the battery case platen and the side wall of the port. Moreover, when the battery case is inserted into the crucible, the spring top pin can be expanded and contracted by the action of the compression spring, and the elastic top pin 21 is pressed down to facilitate the insertion thereof. After the insertion, the elastic top pin is elastically reset to limit the battery case 26.

[0041] The electric appliance cover is provided with a boss base near the end of the battery box, and the T-type plug electrically connected to the circuit board is mounted on the boss base The female head 18, the female plug of the T-type plug is covered with a plug pressing plate 19, and the side of the plug pressing plate is provided with a groove on the female step of the 插头 type plug, and the plug pressing plate is fixed on the electric cover by screws. When the battery case is inserted into the electrical cover, the rear end of the battery case is inserted into the female connector of the Τ-type plug to turn on the circuit.

[0042] As shown in FIG. 7, the battery case is composed of a battery 33, a connection plug, a battery case body 34, and a battery cover 32. The connection plug is a 插头 type plug male head 35, and the battery case body 34 is provided with a large sinking groove, the battery Installed in the sinking groove, a small groove is formed at the tail end of the battery case body, the male plug male head 35 is installed in the groove, the battery cover 32 is covered on the upper side of the battery, and the middle part of the battery case body and the battery cover tail end are respectively Two threaded holes are provided, in which a set screw 37 is provided, which acts to fix the male plug male head 35. The battery case is inserted into the mouthpiece, and the male plug of the plug type is inserted into the female plug of the 插头 type plug for electrical connection.

[0043] The battery case is electrically connected to a power generating device 30. The power generating device is fixed on the chain cover 10 by four screws. The end surface of the main shaft of the power generating device is provided with a U-shaped groove, and the U-shaped groove is fastened to the end of the driving shaft 12 of the driving mechanism. When the connection relationship is formed, the drive shaft drives the main shaft 31 to rotate, thereby realizing power generation by the power generating device. The power generating unit is connected to two wires, and the other ends of the two wires are connected to the circuit board.

[0044] The smart manual hoist of the present invention uses 吋, the upper hook 13 is hung on the fixed end, the lower hook 16 hangs the cargo, and the handle or the chain of the drive mechanism is pulled or pulled by hand to drive the reversing brake wheel or the hand sprocket wheel. Rotation, and then the drive drives the chain to move, to achieve the ascending or descending of the cargo, the driving mechanism moves, the rotation of the drive shaft drives the spindle of the power generating device 30 to rotate, and the power generating device outputs current to charge the battery. The rotation of the reversing brake wheel or the hand sprocket wheel causes the boss 32 on the outer side surface to continuously press the slamming switch 3, and the chip on the control circuit board obtains a pulse current to start the circuit. At the same time, the strain gauge 36 on the pin type sensor 2 is energized, and the electric signal is output. The system automatically detects whether the circuits and related components are working normally. If everything is normal, the display lamp 25 displays green, and the display screen 9 is green in order. Shows the maximum load for historical lifting, the number of times the cargo is lifted, and the actual load. When the cargo is off the ground, the pin-type sensor connected between the hook and the frame is deformed by force, causing deformation of the strain gauge, and the change of the weight of the weight is linear with the magnitude of the force of the cross-section shaft sensor. The magnitude of the force applied by the sensor is linear with the output signal of the strain gauge. The electrical signal is processed by the circuit board 5 to obtain the weight data of the cargo and output to the display. When the weight of the cargo detected by the system is greater than the rated load of the hoist, the display shows a red number, the indicator light emits intermittent red light, and the same sounder 4 beeps to prompt the user that it has been overloaded. When the detected load is greater than the maximum load recorded in the past, the system will actually refresh the load of this record. When the system detects continuous loading The load until the load becomes zero, that is, the hoist lifts the goods to the unloading of the goods for one cycle, the system automatically accumulates the number of uses once, and records them in the chip, which will be automatically displayed the next time the machine is turned off. When the machine is turned on, the number of uses is greater than the number of maintenance presets, the indicator light shows yellow light, and the same display panel also displays yellow data.

The invention realizes the gravity capable of displaying the goods through the setting of the gravity sensing device, and prompts the load when the load exceeds the rated value and the number of uses exceeds the rated value, and the reasonable setting of the gravity sensing device is between the components The electrical connection is reasonably designed and the overall structure is reasonable.

Claims

Claim

[Claim 1] An intelligent manual hoist comprising a hoist body, an upper hook fixed to an upper end of the hoist body, a chain disposed on the hoist body, a driving mechanism for driving the chain movement, and a lower hook fixed at one end of the chain, wherein: The utility model further comprises a gravity sensing device capable of sensing the gravity of the lower hook, wherein the gravity sensing device comprises a pin type load cell, a circuit board electrically connecting the pin type load cell, and a display screen electrically connecting the circuit board. The hoist body includes a frame and a chain cover that is disposed outside the frame, and an electrical cover is disposed outside the chain cover. The circuit board is disposed in the electrical cover, and the display screen is disposed on the surface of the electrical cover.

[Claim 2] A smart manual hoist according to claim 1, wherein: the pin type load cell is disposed through the frame and the upper hook, and both ends of the pin type load cell It is fixed on the frame, and the upper pressure sensing portion is connected to the upper hook.

[Claim 3] A smart manual hoist according to claim 2, wherein: the frame is fixed with a contact elastic piece electrically connected to the pin type load cell, and the inner wall of the chain cover is fixed The contact patch is electrically connected to the circuit board, and the contact patch and the contact elastic piece are disposed on the frame through the chain cover to achieve a contact electrical connection.

[Claim 4] A smart manual hoist according to claim 3, wherein: the frame is fixed with a hook-axis card board, and a rectangular hole is formed on the hook-axis card board, and the upper end surface of the rectangular hole is connected The pin-type load cell comprises a pin body, a pin-shaped plane is disposed in a middle portion of the pin body, and a shoulder is disposed at one end, and the shoulder and the circle-out plane are connected by a groove, a shoulder on the main body of the pin shaft is inserted into a rectangular hole of the hook shaft card, and the strained piece is provided with a strain gauge, and the strain gauge is connected to the wire, and the wire is pierced through the groove, and Pass through the curved holes.

[Claim 5] A smart manual hoist according to claim 1 or 2 or 3 or 4, wherein: the circuit board is electrically connected to the touch switch, and the drive mechanism includes synchronous rotation with the chain The driving wheel, the outer surface of the driving wheel is provided with a boss, and the driving wheel rotates to drive the boss to contact the touch switch.

[Claim 6] The intelligent manual hoist according to claim 5, wherein: the electric appliance cover has a side opening, a battery box pressing plate is fixed in the mouth, and an elastic pin is disposed on the battery box pressing plate. A battery case is inserted into a space formed between the battery case pressure plate and the side wall of the cornice and is restrained by the elastic pin.

[Claim 7] A smart manual hoist according to claim 6, wherein: the battery case is electrically connected to the power generating device, and the spindle of the power generating device is connected to the driving mechanism.

[Claim 8] A smart manual hoist according to claim 7, wherein: the electric appliance cover is provided with a slope, the display screen is embedded on the inclined surface and is covered with a transparent plate, An indicator light is disposed on the circuit board, the indicator light is disposed through the inclined surface, and the sound generator is further disposed on the circuit board.

[Claim 9] A smart manual hoist according to claim 8, wherein: the battery case comprises a battery case, a battery disposed in the battery case, and a battery cover disposed above the battery. A connection plug for electrically connecting the battery is provided at the end of the battery case.

[Claim 10] A smart manual hoist according to claim 9, wherein: the circuit board comprises a gravity calculation module, a load comparison module and a counting module.