CN216628025U

CN216628025U - Electric lifting bed

Info

Publication number: CN216628025U
Application number: CN202123102208.9U
Authority: CN
Inventors: 胡亚风; 田锋; 石金明; 汪群芳; 王国锋; 赵泓博; 王炯; 柏露涛
Original assignee: HANGZHOU HENGHONG MACHINERY CO LTD
Current assignee: HANGZHOU HENGHONG MACHINERY CO LTD
Priority date: 2021-12-06
Filing date: 2021-12-06
Publication date: 2022-05-31
Anticipated expiration: 2031-12-06

Abstract

The utility model discloses an electric lifting bed which comprises a frame, a winding belt, a controller, a lifting switch and a middle beam connected to the frame, wherein a transmission rod and a motor are arranged on the middle beam, a transmission mechanism is connected between the motor and the transmission rod, a brake is connected to the motor, the brake is connected to an output shaft of the motor, a rotary encoder is connected to the output shaft of the motor or the transmission rod, the winding belt penetrates through the frame, one end of the winding belt is connected to the transmission rod, the other end of the winding belt is connected to a winding belt mounting plate, and the motor, the brake, the rotary encoder and the lifting switch are respectively and electrically connected with the controller. The electric lifting bed adopts the brake to realize the control of the height position of the lifting bed, is straight up and straight down in the lifting process, can solve the problems of over travel and easy failure of the lifting bed, and greatly improves the service life and the working stability of the electric lifting bed.

Description

Electric lifting bed

Technical Field

The utility model relates to the technical field of lifting beds, in particular to an electric lifting bed.

Background

The motor caravan is a special vehicle for tourism and camping of field workers, and a convenient and fashionable modern motor caravan is rapidly developed. The lifting bed is one of the necessary equipment of motor caravan, uses electronic lifting bed, can improve the utilization ratio of carriage inner space, though the production technology of current lifting bed for motor caravan is becoming ripe day by day, nevertheless current electronic lifting bed still remains partial not enough to be improved.

The existing lifting bed structure comprises a bed body frame body, a bed body lifting fixing piece, a flexible lifting body, a mandrel, a braking assembly, a manual driving assembly and an automatic driving assembly, wherein the braking assembly comprises an electric telescopic rod, a fixing seat and a first gear, the first gear is arranged on the mandrel, the fixing seat is arranged on a cross beam and positioned on one side of the mandrel, the electric telescopic rod is arranged on the fixing seat and points to the first gear, a controller is electrically connected with the electric telescopic rod, an embedded block corresponding to a tooth groove of the first gear is arranged at the end part of the electric telescopic rod, a guide hole corresponding to the embedded block is arranged on the fixing seat, the structural stability of the embedded block is improved, when the motor works, the controller commands the electric telescopic rod to retract, the embedded block loses the rotary locking on the first gear, when the motor stops working, the electric telescopic rod pops out to reset, and the embedded block locks the first gear, rotation of the mandrel is avoided. The embedded block at the end part of the electric telescopic rod is matched with the tooth groove of the first gear to realize the locking and releasing of the first gear, so that the rotating action of the mandrel is controlled. The brake assembly structure adopts a ratchet wheel one-way locking principle, and has the following defects: 1. when the lifting bed is lifted and stopped, the lifting bed can descend under the action of gravity, and the lifting bed can not stop until the ratchet wheel is clamped by the pawl, so that the lifting bed can not lift at the highest point and has high noise; 2. before the lifting bed descends and runs, the lifting bed must ascend by a small section to separate the pawl and the ratchet wheel, when the lifting bed ascends to the highest point for many times, the travel switch elastic sheet is deformed, so that the ascending travel is forcibly enlarged, and even after the lifting bed is used for many times, the product fails because the sliding block of the sliding rail cannot ascend due to physical rotation blockage; and the lifting bed can be used for many times, especially after being used under high load, the chain can be deformed and lengthened, so that the chain wheel transmission is changed from original tight connection into loose connection, the pawl and the ratchet wheel cannot be separated, and the product can also be invalid.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the technical scheme provided by the utility model is as follows:

the utility model provides an electric lifting bed, includes frame, winding, controller, lifting switch and connects the centre sill on the frame, be provided with transfer line and motor on the centre sill, be connected with drive mechanism between motor and the transfer line, be connected with the stopper on the motor, the stopper is connected on the output shaft of motor, on the output shaft of motor or be connected with rotary encoder on the transfer line, the winding is worn to put on the frame, the one end of winding is connected on the transfer line, the other end of winding is connected with the winding mounting panel, the motor the stopper rotary encoder with lifting switch respectively with the controller electricity is connected.

The utility model is further provided with a stroke limiting mechanism on the middle beam, wherein the stroke limiting mechanism comprises a limiting screw rod, a screw rod nut, a first stroke switch and a second stroke switch, a linkage gear set is connected between the limiting screw rod and the transmission rod, the screw rod nut is connected on the limiting screw rod, the first stroke switch and the second stroke switch are respectively arranged at two ends of the limiting screw rod, and the first stroke switch and the second stroke switch are respectively and electrically connected with the controller. A stroke limiting mechanism is arranged to detect the rotation stroke of the transmission rod, so that the rising height limit and the falling height limit of the lifting bed are controlled.

The utility model is further arranged to further comprise an overcurrent protector which is electrically connected to a power supply circuit of the motor. The overcurrent protector can prevent the motor from being overloaded and still running.

The utility model is further provided that one side of the frame is provided with a track guide mechanism, the track guide mechanism comprises a slide block, a slide block mounting plate and a slide rail, the slide block mounting plate is connected with the outer side surface of the frame, the slide block is fixed on the slide block mounting plate, and the slide block is movably connected in the slide rail. The slide rail and the slide block are added to enhance the stability of the electric lifting bed, and the slide block mounting plate is used between the slide block and the bed body so as to be convenient for assembly.

The utility model is further provided that a connecting bracket is connected between the frame and the middle beam, the connecting bracket is L-shaped, the connecting bracket comprises a first mounting plate and a second mounting plate, the first mounting plate is connected with the inner side surface of the frame, and the second mounting plate is connected with the bottom surface of the middle beam. The L-shaped connecting support is adopted to realize the connection of the center sill and the frame, so that the excessive distortion and deformation of the center sill are avoided.

The utility model is further provided that the transmission mechanism comprises a driving chain wheel, a driven chain wheel and a chain, the driving chain wheel is connected to an output shaft of the motor, the driven chain wheel is connected to the transmission rod, and the chain is respectively connected with the driving chain wheel and the driven chain wheel.

The utility model is further provided with a tape coiling fixer respectively arranged at two ends of the transmission rod, and one end of the tape coiling is connected with the tape coiling fixer.

The utility model is further provided with a winding tape slot on the frame, and the winding tape penetrates in the winding tape slot.

The utility model is further provided with a transmission rod sealing cover on the middle beam, and a chain wheel sealing cover on the transmission mechanism. The transmission rod sealing cover and the chain wheel sealing cover can play a role in protection, and the lifting of the lifting bed is guaranteed not to be affected by the outside.

The utility model is further provided with a wood board bracket arranged on the frame, and a wood board is arranged on the wood board bracket.

Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:

the electric lifting bed of the technical scheme has the working mode of lifting: the lifting switch is pressed down, the controller drives the brake to release the output shaft of the motor and controls the motor to rotate forwards, the transmission mechanism drives the transmission rod to rotate, the tape is wound on the tape winding fixer along with the rotation of the transmission rod, the frame stably rises under the guiding action of the rail guide mechanism, the lifting switch is released after the frame rises to a specified height, and the controller drives the brake to brake the output shaft of the motor and controls the motor to stop rotating, so that the lifting action of the lifting bed is completed; the falling switch is pressed down, the controller drives the brake to release the motor output shaft, the lifting bed descends under the action of the gravity of the lifting bed, the winding tape is released from the winding tape fixing device, the frame stably descends under the guiding action of the rail guiding mechanism, the falling switch is released after the frame descends to a specified height, the controller drives the brake to brake the motor output shaft and control the motor to stop rotating, and the descending action of the lifting bed is completed. The electric lifting bed adopts the brake to realize the control of the height position of the lifting bed, is straight up and down in the lifting process, can solve the technical problems of over travel and easy failure in the lifting process of the lifting bed in the background technology, and greatly improves the service life and the working stability of the electric lifting bed.

In the lifting process of the electric lifting bed, the rotary encoder is arranged for judging the position of the lifting bed, the motor feeds a current signal of the motor back to the controller in the working process, and the controller can judge whether the lifting bed is overloaded according to the relation curve between the signal of the rotary encoder and the current signal of the motor, so that whether the motor continues to work is controlled, and the service life of the electric lifting bed is prevented from being influenced by overload work of the motor.

According to the technical scheme, the electric lifting bed is further provided with a stroke limiting mechanism to control the stroke of the electric lifting bed, so that the situation that the motor continuously works to exceed the set lifting stroke of the electric lifting bed due to the fact that the lifting switch is pressed for a long time during operation is avoided.

This technical scheme adopts L type linking bridge to realize being connected of centre sill and frame, avoids the centre sill too distortion, improves the bulk strength of electric lift bed.

Drawings

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is a perspective view of the embodiment of the present invention with the drive link cover and sprocket cover removed.

FIG. 3 is a top view of the embodiment of the present invention with the drive link cover and sprocket cover removed.

FIG. 4 is a perspective view of the wood board of the present invention.

Fig. 5 is an enlarged view of a portion a in fig. 2.

Fig. 6 is an enlarged view of a portion B in fig. 2.

Fig. 7 is an enlarged view of a portion C in fig. 2.

Fig. 8 is an enlarged view of a portion D in fig. 3.

FIG. 9 is an electrical control diagram of an embodiment of the utility model.

Detailed Description

For a further understanding of the present invention, reference will now be made in detail to the embodiments illustrated in the drawings.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, integrally connected, or detachably connected; either mechanically or electrically, or internally communicating two elements; they may be directly connected or indirectly connected through an intermediate, and those skilled in the art will understand the specific meanings of the above terms according to specific situations.

With reference to fig. 1-9, the technical scheme of the utility model is an electric lifting bed, which comprises a frame 1, a winding belt 2, a controller 3, a lifting switch 4 and a middle beam 5 connected to the frame 1, wherein the middle beam 5 is provided with a transmission rod 6 and a motor 7, a transmission mechanism 8 is connected between the motor 7 and the transmission rod 6, the motor 7 is connected with a brake 9, the brake 9 is connected to an output shaft of the motor 7, an output shaft of the motor 7 is connected with a rotary encoder 10, the winding belt 2 is arranged on the frame 1 in a penetrating manner, two ends of the transmission rod 6 are respectively provided with a winding belt fixer 16, one end of the winding belt 2 is connected to the winding belt fixer 16, the other end of the winding belt 2 is connected with a winding belt mounting plate 11, the motor 7, the brake 9, the rotary encoder 10 and the lifting switch 4 are respectively and electrically connected to the controller 3, the output end of the controller 3 is respectively connected with the input end of the motor 7 and the input end of the brake 9, and the motor current signal output end of the motor 7, the signal output end of the rotary encoder 10 and the signal output end of the lifting switch 4 are respectively connected with the input end of the controller 3.

The current signal of the motor 7 can be collected through a current sampling module, and the motor 7 adopts a speed reducing motor.

The middle beam 5 is further provided with a stroke limiting mechanism 12, the stroke limiting mechanism 12 comprises a limiting screw rod 121, a screw rod nut 122, a first stroke switch 123 and a second stroke switch 124, a linkage gear set 125 is connected between the limiting screw rod 121 and the transmission rod 6, the screw rod nut 122 is connected to the limiting screw rod 121, the first stroke switch 123 and the second stroke switch 124 are respectively arranged at two ends of the limiting screw rod 121, the first stroke switch 123 and the second stroke switch 124 are respectively electrically connected with the controller 3, and a signal output end of the first stroke switch 123 and a signal output end of the second stroke switch 124 are respectively connected with an input end of the controller 3.

The electric lifting bed further comprises an overcurrent protector 13, wherein the overcurrent protector 13 is electrically connected to a power supply loop of the motor 7, so that overcurrent protection of the motor 7 is realized.

A track guide mechanism 14 is arranged on one side of the frame 1, the track guide mechanism 14 comprises a slide block 141, a slide block mounting plate 142 and a slide rail 143, the slide block mounting plate 142 is connected to the outer side surface of the frame 1, the slide block 141 is fixed on the slide block mounting plate 142, and the slide block 141 is movably connected in the slide rail 143.

Above-mentioned frame 1 with be connected with linking bridge 15 between well roof beam 5, linking bridge 15 is the L type, linking bridge 15 includes first mounting panel 151 and second mounting panel 152, first mounting panel 151 with the medial surface of frame 1 is connected, second mounting panel 152 with the bottom surface of well roof beam 5 is connected, linking bridge 15 adopts bolt or rivet to connect respectively frame 1 with well roof beam 5.

The transmission mechanism 8 comprises a driving sprocket 81, a driven sprocket 82 and a chain 83, wherein the driving sprocket 81 is connected to an output shaft of the motor 7, the driven sprocket 82 is connected to the transmission rod 6, and the chain 83 is respectively connected with the driving sprocket 81 and the driven sprocket 82.

Be equipped with the winding fluting on above-mentioned frame 1, winding 2 wears to be put in the winding fluting, be provided with the transfer line closing cap 17 on the center sill 5, be provided with the sprocket closing cap 18 on the drive mechanism 8, be equipped with plank support 19 on the frame 1, be provided with plank 20 on the plank support 19.

The up-down switch 4 includes an up switch and a down switch.

The electric lifting bed adopts the technical scheme that firstly, a sliding rail 143 and a belt mounting plate 11 are installed, a lifting switch is pressed down, a controller 3 drives a brake 9 to loosen an output shaft of a motor 7 and control the motor 7 to rotate forwards, a transmission mechanism 8 drives a transmission rod 6 to rotate, a belt 2 is wound on a belt winding fixer 16 along with the rotation of the transmission rod 6, a frame 1 stably ascends under the guiding action of a rail guide mechanism 14, the lifting switch is loosened after the frame ascends to a specified height, the controller 3 drives the brake 9 to brake the output shaft of the motor 7 and control the motor 7 to stop rotating, and the ascending action of the lifting bed is completed; the descending switch is pressed down, the controller 3 drives the brake 9 to release the output shaft of the motor 7, the lifting bed descends under the action of the gravity of the lifting bed, the winding belt 2 is released from the winding belt fixer 16, the frame 1 descends stably under the guiding action of the track guiding mechanism 14, the descending switch is released after the frame descends to a specified height, the controller 3 drives the brake 9 to brake the output shaft of the motor 7 and control the motor 7 to stop rotating, and the descending action of the lifting bed is completed.

In a further embodiment, a rotary encoder 10 may also be connected to the drive rod 6 for feeding back information on the travel of the lift bed.

The present invention and its embodiments have been described above schematically, and the description is not intended to be limiting, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the utility model, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the utility model.

Claims

1. The utility model provides an electric lifting bed, its characterized in that includes frame, winding, controller, lifting switch and connects the well roof beam on the frame, be provided with transfer line and motor on the well roof beam, be connected with drive mechanism between motor and the transfer line, be connected with the stopper on the motor, the stopper is connected on the output shaft of motor, on the output shaft of motor or be connected with rotary encoder on the transfer line, the winding is worn to put on the frame, the one end of winding is connected on the transfer line, the other end of winding is connected with the winding mounting panel, the motor the stopper rotary encoder with lifting switch respectively with the controller electricity is connected.

2. The electric lifting bed according to claim 1, wherein a stroke limiting mechanism is further arranged on the center sill, the stroke limiting mechanism comprises a limiting screw rod, a screw nut, a first stroke switch and a second stroke switch, a linkage gear set is connected between the limiting screw rod and the transmission rod, the screw nut is connected to the limiting screw rod, the first stroke switch and the second stroke switch are respectively arranged at two ends of the limiting screw rod, and the first stroke switch and the second stroke switch are respectively electrically connected with the controller.

3. The electric lift bed of claim 1, further comprising an over-current protector electrically connected to a power supply circuit of the motor.

4. The electric lifting bed according to claim 1, wherein a track guide mechanism is provided on one side of the frame, the track guide mechanism comprises a slide block, a slide block mounting plate and a slide rail, the slide block mounting plate is connected to the outer side surface of the frame, the slide block is fixed on the slide block mounting plate, and the slide block is movably connected in the slide rail.

5. The electric lifting bed according to claim 1, wherein a connecting bracket is connected between the frame and the center sill, the connecting bracket is L-shaped, the connecting bracket comprises a first mounting plate and a second mounting plate, the first mounting plate is connected with the inner side surface of the frame, and the second mounting plate is connected with the bottom surface of the center sill.

6. The electric lift bed of claim 1, wherein the transmission mechanism comprises a driving sprocket connected to the output shaft of the motor, a driven sprocket connected to the transmission rod, and a chain connected to the driving sprocket and the driven sprocket respectively.

7. The electric lifting bed according to any one of claims 1 to 6, wherein the two ends of the transmission rod are respectively provided with a tape holder, and one end of the tape is connected to the tape holder.

8. An electric lifting bed as claimed in any one of claims 1 to 6, wherein the frame is provided with a tape slot, and the tape is inserted into the tape slot.

9. The electric lifting bed according to any one of claims 1 to 6, wherein a transmission rod cover is arranged on the middle beam, and a chain wheel cover is arranged on the transmission mechanism.

10. An electric lifting bed as claimed in any one of claims 1 to 6, wherein a plank support is provided on the frame, and a plank is provided on the plank support.