CN111547641A

CN111547641A - Manual and electric control lifting device

Info

Publication number: CN111547641A
Application number: CN202010354178.1A
Authority: CN
Inventors: 王威程
Original assignee: Shandong Rongye Rv Manufacturing & Service Co ltd
Current assignee: Shandong Rongye Rv Manufacturing & Service Co ltd
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2020-08-18

Abstract

The invention belongs to the technical field of machine manufacturing. In order to solve the technical problems in the prior art, the invention provides a manual-electric dual-control lifting device, which comprises an electric push rod, wherein the electric push rod adopts a worm gear transmission mode, and a worm is fixedly connected with a motor gear, and is characterized in that: one end of the worm extends out of the shell of the electric push rod, and a hand cranking device is arranged at the end of the worm. The invention has the beneficial effects that: when the electric push rod is electrically driven, the electric push rod drives the worm wheel and the worm to move through the rotation of the motor so as to realize the lifting of the electric push rod. When no electricity is available, the movement of the worm wheel and the worm can be realized by applying force to the shaft extension end of the gear shaft, so that the lifting of the electric push rod in an electricity-free state is realized. The force application point can be flexibly set by adding the transmission flexible shaft, and the force application difficulty caused by the limitation of the installation position of the push rod is overcome.

Description

Manual and electric control lifting device

Technical Field

The invention belongs to the technical field of mechanical manufacturing, and particularly relates to a lifting device capable of flexibly switching to be electrically driven or manually driven.

Background

In the field of car as a house manufacturing technology, due to the characteristics of storage and expansion of the car as a house, the push rod device is very commonly used in the manufacturing of the car as a house. Operations such as lifting of the carriage cover, entering and exiting of the auxiliary transverse device and the like are carried out by means of driving of the electric push rod. Because electric putter's work relies on electric drive, and the electric power of car as a house mainly relies on the storage battery power supply, and the car as a house carries out the during operation power consumption ten minutes huge at the place, often because the not enough work of electric putter that causes of storage battery power storage is malfunctioning, and the not enough of electric quantity causes accomodating extension failure of car as a house, brings very big vexation for the personnel that use the car. Therefore, there is a need to provide a device capable of achieving a normal storage and expansion operation of a caravan by means of a manual operation in a power-off state, so as not to affect a normal operation of the caravan.

Disclosure of Invention

In order to solve the technical problems in the prior art, the invention provides a manual-electric dual-control lifting device, which can realize automatic control by depending on the power supply of a storage battery during normal work, and can realize normal storage and expansion operation of a motor home by depending on manual operation in a power-off state.

In order to achieve the technical purpose, the invention adopts the technical scheme that: the utility model provides a two elevating gear of accuse of flashlight, its includes electric putter, electric putter adopts worm gear transmission form, worm and motor gear be connected fixedly its characterized in that: one end of the worm extends out of the shell of the electric push rod, and a hand cranking device is arranged at the end of the worm.

Further, hand cranking device includes the gearbox, including being located the worm and stretching out the drive gear on the end in the gearbox, with the change gear of drive gear meshing in the gearbox, change gear's axle center is equipped with the gear shaft that stretches out the gearbox casing.

Furthermore, the transmission flexible shaft comprises a bendable elastic shaft core sleeve and an elastic shaft core arranged inside the shaft core sleeve, one end of the elastic shaft core is fixedly connected with the gear shaft through a connecting device, and a detachable rocking handle is arranged at the other end of the elastic shaft core.

Furthermore, the connecting device comprises a gear shaft sleeve, the cross section of the end part of the gear shaft is non-circular, a shaft hole with the same shape as the cross section of the end part of the gear shaft is arranged inside the gear shaft sleeve, an outer sleeve is arranged outside the gear shaft sleeve, a seat plate is arranged at the bottom end of the outer sleeve, the seat plate is fixed with the shell of the gearbox, and external threads are arranged on the sleeve wall of the outer sleeve; the both ends of elasticity axle core are equipped with the adapter sleeve respectively, and the internal thread is equipped with to the adapter sleeve, the cross sectional shape of elasticity axle core is unanimous with gear shaft tip cross sectional shape, and in the tip of elasticity axle core inserted the shaft hole of gear bush, the adapter sleeve passed through screw thread locking with the overcoat and realizes being connected of driving flexible axle and gear shaft.

The invention has the beneficial effects that: when the electric push rod is electrically driven, the electric push rod drives the worm wheel and the worm to move through the rotation of the motor so as to realize the lifting of the electric push rod. When no electricity is available, the movement of the worm wheel and the worm can be realized by applying force to the shaft extension end of the gear shaft, so that the lifting of the electric push rod in an electricity-free state is realized. The force application point can be flexibly set by adding the transmission flexible shaft, and the force application difficulty caused by the limitation of the installation position of the push rod is overcome.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a sectional view taken along line A-A of FIG. 1.

Fig. 3 is an enlarged schematic view of B of fig. 2.

Detailed Description

The invention is described in detail below with reference to the drawings and examples.

As shown in fig. 1, the manual and electric control lifting device comprises an electric push rod, wherein the electric push rod comprises a motor 1 and a shell 2. Referring to fig. 2, the electric push rod adopts a worm gear transmission form, including a worm 3 and a worm wheel 4, the worm 3 is connected and fixed with a motor gear 5, and the above structure is the same as the structure of the existing electric push rod adopting worm gear drive, which has been introduced in the prior art and is not described herein again.

As shown in fig. 2, in the present embodiment, one end of the worm 4 extends out of the housing 2 of the electric putter to form a shaft extension end 6, and a hand cranking device is arranged on the shaft extension end 6. According to the schematic shown in fig. 2, when the motor stops working, the lifting operation of the electric push rod can be realized by applying force to the shaft extension end 6 to force the worm 4 to rotate forward and backward, so that the purpose of manual operation is achieved.

As shown in fig. 1 and 2, in order to facilitate manual force application to the worm 4, in the present embodiment, a gearbox 7 is provided, the gearbox 7 includes a driving gear 8 located at the extended end of the worm, and a change gear 9 engaged with the driving gear in the gearbox, and as shown in fig. 3, a gear shaft 10 extending out of the gearbox housing is provided at the axis of the change gear. The worm wheel and the worm can be driven by applying a small force on the gear shaft 10. For convenience of force application, a rocking handle 11 may be directly mounted on the gear shaft 10.

In practical application process, because electric putter's mounted position is nimble changeable, like in the application occasion of car as a house, electric putter can install inside the carriage, installs at comparatively hidden position even, and this has not had a problem in adopting electronic operation mode, but when adopting manual operation, often can lead to unable manual application of force operation to gear shaft 10 because of the limitation that the mounted position of push rod caused.

In order to solve the technical problem, a remote manual operation mode is added in the embodiment. As shown in fig. 2 and fig. 3, a flexible transmission shaft is further added in this embodiment, the flexible transmission shaft includes a bendable elastic shaft core sleeve 12, an elastic shaft core 13 located inside the shaft core sleeve, the elastic shaft core 13 is made of elastic steel strips, and can be bent along with the shaft core sleeve 12 to facilitate the setting of a transmission route, when a rotational force is applied to one end of the elastic shaft core 13, the rotational force is limited by the shaft core sleeve 12, and the shaft core 13 can rotate inside the shaft core sleeve 12 to realize rotational transmission.

As shown in the attached figure 3, the transmission flexible shaft is detachably connected with the gear shaft through the following structure.

The end section of the gear shaft 10 is non-circular, in this embodiment, a rectangular section is adopted, a gear shaft sleeve 14 is arranged on the shaft extension end of the gear shaft 10, a shaft hole with the same shape as the end section of the gear shaft is arranged inside the gear shaft sleeve 14, an outer sleeve 15 is arranged outside the gear shaft sleeve 14, a seat plate 15 is arranged at the bottom end of the outer sleeve, the seat plate 16 is fixed with a shell of the gearbox 7, and an external thread is arranged on the sleeve wall of the outer sleeve 15. In this embodiment, the section of the elastic shaft core 13 is a rectangle that is consistent with the section shape of the end of the gear shaft, the end of the core shaft sleeve is provided with a fastening sleeve 17, the end of the elastic shaft core 13 is inserted into the shaft hole of the gear shaft sleeve 14, and the fastening sleeve 17 and the outer sleeve 15 are locked by screw threads to realize the connection of the flexible transmission shaft and the gear shaft 10. When the elastic shaft core 13 rotates, the gear shaft 10 is driven to rotate by the driving of the gear sleeve 14. And in a detachable mode, the fastening sleeve is loosened, and the end part of the shaft core 13 is separated from the gear shaft sleeve 14 to finish the detachment.

As shown in the attached figure 2, the other end of the transmission flexible shaft can be flexibly fixed on an external panel of the vehicle body, the fixing mode can also adopt the connecting mode of the other end of the transmission flexible shaft, a rocking handle 11 can be installed at the end, and the rotation of the shaft core 13 is realized through the rotation of the rocking handle 11. When the electric operation is carried out, the rocking handle 11 is taken down, and the worm wheel, the worm and the shaft core rotate along with the rotation of the motor 1.

Claims

1. The utility model provides a two elevating gear of accuse of flashlight, its includes electric putter, electric putter adopts worm gear transmission form, worm and motor gear be connected fixedly its characterized in that: one end of the worm extends out of the shell of the electric push rod, and a hand cranking device is arranged at the end of the worm.

2. The manual and electric control lifting device according to claim 1, characterized in that: the hand cranking device comprises a gearbox, a driving gear located on the extending end of the worm is arranged in the gearbox, a speed change gear meshed with the driving gear is arranged in the gearbox, and a gear shaft extending out of a shell of the gearbox is arranged at the axis of the speed change gear.

3. The manual and electric control lifting device according to claim 2, characterized in that: the transmission flexible shaft comprises a bendable elastic shaft core sleeve and an elastic shaft core arranged inside the shaft core sleeve, one end of the elastic shaft core is fixedly connected with a gear shaft through a connecting device, and a detachable rocking handle is arranged at the other end of the elastic shaft core.

4. The manual and electric control lifting device according to claim 3, characterized in that: the connecting device comprises a gear shaft sleeve, the cross section of the end part of the gear shaft is non-circular, a shaft hole with the same shape as the cross section of the end part of the gear shaft is arranged in the gear shaft sleeve, an outer sleeve is arranged outside the gear shaft sleeve, a seat plate is arranged at the bottom end of the outer sleeve and fixed with the shell of the gearbox, and external threads are arranged on the sleeve wall of the outer sleeve; the both ends of elasticity axle core are equipped with the adapter sleeve respectively, and the internal thread is equipped with to the adapter sleeve, the cross sectional shape of elasticity axle core is unanimous with gear shaft tip cross sectional shape, and in the tip of elasticity axle core inserted the shaft hole of gear bush, the adapter sleeve passed through screw thread locking with the overcoat and realizes being connected of driving flexible axle and gear shaft.