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CN-224226560-U - Electric jack

CN224226560UCN 224226560 UCN224226560 UCN 224226560UCN-224226560-U

Abstract

The utility model relates to an electric jack, which comprises a jack bracket, a top seat, a worm gear pair and a motor component, wherein the top seat is arranged above the jack bracket, the worm gear pair is arranged inside the jack bracket, the power input end of the worm gear pair is connected with the motor component, the power output end of the worm gear pair is connected with the top seat through a transmission piece, and the motor component drives the top seat to lift through the worm gear pair and the transmission piece. The transmission piece comprises a jacking sleeve and a vertical screw shaft, the vertical screw shaft is rotatably arranged inside the jack bracket, the vertical screw shaft is connected with the worm gear pair and driven to rotate by the worm gear pair, and the jacking seat is arranged at the upper end of the jacking sleeve and is in threaded connection with the vertical screw shaft. The electric jack is formed by matching the worm and gear pair with the motor assembly, is simple in structure and convenient to carry, and simultaneously realizes a self-locking function by using the worm and gear pair, so that the jack has a self-locking function.

Inventors

  • ZHANG YINGKE

Assignees

  • 厦门海洋职业技术学院

Dates

Publication Date
20260512
Application Date
20250630

Claims (10)

  1. 1. The electric jack is characterized by comprising a jack support, a top seat, a worm gear pair and a motor assembly, wherein the top seat is arranged above the jack support, the worm gear pair is arranged inside the jack support, a power input end of the worm gear pair is connected with the motor assembly, a power output end of the worm gear pair is connected with the top seat through a transmission piece, and the motor assembly drives the top seat to lift through the worm gear pair and the transmission piece.
  2. 2. The electric jack of claim 1, wherein the transmission piece comprises a jacking sleeve and a vertical screw shaft, the vertical screw shaft is rotatably arranged inside the jack support, the vertical screw shaft is connected with the worm gear pair and driven to rotate by the worm gear pair, the jacking seat is arranged at the upper end of the jacking sleeve, the jacking sleeve is sleeved outside the vertical screw shaft and is in threaded connection with the vertical screw shaft, the jacking sleeve is in vertical sliding fit with the jack support, and the jacking sleeve and the jacking seat are driven to lift when the vertical screw shaft rotates.
  3. 3. An electric jack according to claim 2 wherein the worm gear pair comprises a worm wheel and a worm, the worm wheel is coaxially mounted at the lower end of the vertical screw shaft, the worm is horizontally disposed and meshed with the worm wheel, and the worm is driven to rotate by the motor assembly.
  4. 4. An electric jack according to claim 1 or 3, wherein the motor assembly comprises a driving motor and a power supply battery, the driving motor is arranged on the outer side of the lower end of the jack support, an output shaft of the driving motor extends into the jack support and is connected with a worm of the worm gear pair so as to drive the worm to rotate, and the power supply battery is arranged at one end, far away from the jack support, of the driving motor, and is used for supplying power to the driving motor.
  5. 5. An electric jack according to claim 4 wherein the power supply battery is a lithium battery.
  6. 6. An electric jack according to claim 2, wherein the top seat is T-shaped, and the lower end of the top seat extends into the upper end of the jacking sleeve and is in threaded connection with the jacking sleeve.
  7. 7. An electric jack according to claim 1 further comprising a holder provided below the jack stand, the holder comprising a fixing plunger provided vertically and adapted to be inserted into the ground, the lower end of the fixing plunger being sharpened, the top of the fixing plunger being detachably connected to the bottom of the jack stand.
  8. 8. An electric jack according to claim 7 wherein the anchor further comprises a force plate for contacting the ground, wherein a long groove is formed in the middle of the force plate for facilitating the vertical penetration of the fixed insert rod, and the fixed insert rod is hinged to the side wall of the long groove through a hinge pin.
  9. 9. An electric jack according to claim 1 wherein the top end of the jack stand is secured with an annular end cap, the outer peripheral side of which is secured with a hinged connection block on which a reinforcing latch is hinged.
  10. 10. An electric jack according to claim 1, wherein a plurality of grooves are uniformly distributed on the circumference of the top surface of the top base, and the grooves extend in the radial direction of the top base.

Description

Electric jack Technical Field The present utility model relates to an electric jack. Background The jack can be divided into a mechanical jack and a hydraulic jack according to the working principle, and a screw jack, a hydraulic jack and an electric hydraulic jack are commonly used for lifting. The hydraulic jack is based on the most basic pascal law in principle, and the pressure of the liquid is uniform all over. In a balanced system, the pressure exerted on a smaller piston is smaller, while a larger piston exerts a larger pressure ratio, which can keep the liquid stationary. So that different pressures at different ends can be obtained through liquid transmission, the aim of changing can be achieved, and the hydraulic electric jack commonly seen by people utilizes the principle to achieve force transmission. The screw jack is a screw jack which pulls the handle in a reciprocating manner, the pulling claw pushes the ratchet wheel to rotate in a clearance manner, the small bevel gear drives the large bevel gear to enable the lifting screw to rotate, and therefore the lifting sleeve is lifted or lowered, and the lifting tension function is achieved. However, the existing hydraulic jack needs hydraulic oil as an intermediate medium to transfer and convert energy, so that the hydraulic jack has high maintenance requirements and fire hazards, and the related hydraulic transmission parts have many hydraulic transmission parts and high precision requirements, complex process and high cost. The screw jack has no self-locking effect, a brake is required to be additionally arranged, and the structure is complex and heavy, and the screw jack is inconvenient to carry. Disclosure of utility model The utility model aims to solve the problems of the prior art, namely the technical problem to be solved by the utility model is to provide an electric jack. In order to achieve the purpose, the electric jack comprises a jack support, a top seat, a worm gear pair and a motor assembly, wherein the top seat is arranged above the jack support, the worm gear pair is arranged inside the jack support, a power input end of the worm gear pair is connected with the motor assembly, a power output end of the worm gear pair is connected with the top seat through a transmission piece, and the motor assembly drives the top seat to lift through the worm gear pair and the transmission piece. The jack is characterized in that the transmission piece comprises a jacking sleeve and a vertical screw shaft, the vertical screw shaft is rotatably arranged inside the jack support, the vertical screw shaft is connected with the worm gear pair and driven to rotate by the worm gear pair, the top seat is arranged at the upper end of the jacking sleeve, the jacking sleeve is sleeved outside the vertical screw shaft and is in threaded connection with the vertical screw shaft, the jacking sleeve is in vertical sliding fit with the jack support, and the jacking sleeve and the top seat are driven to lift when the vertical screw shaft rotates. Further, the worm gear pair comprises a worm wheel and a worm, the worm wheel is coaxially arranged at the lower end of the vertical screw shaft, the worm is horizontally arranged and meshed with the worm wheel, and the worm is driven to rotate by the motor assembly. Further, the motor assembly comprises a driving motor and a power supply battery, the driving motor is arranged on the outer side of the lower end of the jack support, an output shaft of the driving motor stretches into the jack support and is connected with a worm of the worm gear pair so as to drive the worm to rotate, and the power supply battery is arranged at one end, far away from the jack support, of the driving motor and is used for supplying power for the driving motor. Further, the power supply battery is a lithium battery. Furthermore, the footstock is T type, and the lower extreme of footstock stretches into inside jacking sleeve upper end and with jacking sleeve threaded connection. Further, still including locating the fixer of jack support below, the fixer is including vertical setting and be used for inserting the fixed inserted bar on ground, the lower extreme of fixed inserted bar is sharp-pointed form, and the top of fixed inserted bar is connected with the bottom of jack support is removable. Further, the fixer further comprises a stress plate for contacting with the ground, a long strip groove for facilitating the fixing of the inserted bar to vertically penetrate is formed in the middle of the stress plate, and the fixing inserted bar is hinged to the side wall of the long strip groove through a hinge pin shaft. Further, an annular end cover is fixed at the top port of the jack support, a hinged connecting block is fixed on the peripheral side face of the annular end cover, and a reinforcing bolt is hinged on the hinged connecting block. Further, a plurality of grooves are uniformly distributed on the circumference of the top surface