Vertical rod type electric jack

Abstract

The utility model discloses a vertical rod type electric jack which comprises a driving assembly, the driving assembly comprises a motor and a jacking assembly, the jacking assembly comprises a threaded rod, the outer portion of the threaded rod is in threaded connection with a threaded pipe, the threaded pipe can only move up and down under the action of a limiting assembly, and a driven gear meshed with a driving gear is welded to the bottom of the threaded rod. A connecting plate is welded to the top of the threaded pipe; a top plate is spherically connected to the top of the ball; the bearing mechanism comprises a groove body for storing lubricating oil and a circular plate, and the groove body is installed in the base through bolts; according to the vertical rod type electric jack, the top plate can rotate, the top plate can incline along with inclination of a heavy object, the top plate can be tightly attached to the jacked heavy object, the stability of the top plate when the heavy object is jacked up is improved, vertical moving and shaking of the threaded pipe are effectively reduced through the effect of the limiting assembly, and through the effect of the bearing mechanism, the threaded pipe is prevented from falling off. And therefore, the screw cannot move downwards, and stable transmission between the driving gear and the driven gear is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of jacks, in particular to a vertical electric jack. Background Art

[0002] A jack refers to a light lifting device that uses a rigid lifting piece as a working device to lift a heavy object within a small stroke through a top bracket or a bottom pawl. Jacks are mainly used in factories, mines, transportation and other departments for vehicle repair and other lifting and supporting work. Its structure is light, firm, flexible and reliable, and can be carried and operated by one person.

[0003] For example, the prior art publication (announcement) number: CN106115540B discloses an electric jack, which includes a gear box and a motor for driving the gear box to operate. A drive shaft is arranged at the output end of the gear box, a lead screw is connected to the lower end of the drive shaft, a lead screw nut is threadedly connected to the lead screw, an inner tube is fixed on the outer circumferential surface of the lead screw nut, an outer tube is sleeved outside the inner tube, the upper end of the outer tube is fixed to the bottom of the gear box, and the lower end of the inner tube is connected to a bottom foot support through a pin. The product of the present invention adopts lead screw transmission, increasing the use efficiency by more than 70%; uses friction plates to control the descending stop position, solving the problem that the lead screw cannot be self-locked; the PCB circuit and the motor control the automatic lifting memory function, facilitating operation and intelligent control; the appearance is novel, the structure is simple, and it is convenient to carry, disassemble and assemble.

[0004] The above technical solution has the following defects: its top is difficult to rotate, resulting in a poor fit between the top and the bottom of the heavy object, which is not conducive to stably lifting the heavy object. Moreover, the motor and the lead screw are on the same straight line, which is easy to damage the motor. Therefore, it is necessary to redesign a vertical electric jack. Content of the Utility Model

[0005] The purpose of the utility model is to provide a vertical electric jack to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a vertical electric jack, including a driving component, the driving component includes a motor, the motor is fixedly installed inside the base, and a driving gear is installed at the lower end of the output shaft of the motor through bolts;

[0007] A jacking component, the jacking component includes a screw rod, a threaded tube is screwed outside the screw rod, the threaded tube can only move up and down under the action of a limiting component, and a driven gear meshing with the driving gear is welded at the bottom of the screw rod; a connecting plate is welded at the top of the threaded tube, a spherical ball is welded to the top of the connecting plate through a connecting rod, and a top plate is ball-jointed at the top of the spherical ball;

[0008] Load-bearing mechanism, the load-bearing mechanism includes a tank for storing lubricating oil and a circular plate. The tank is installed inside the base by bolts. The circular plate is welded to the lower end of the screw rod, and the circular plate is located inside the tank.

[0009] Preferably, a bearing is sleeved outside the screw rod. The inner wall of the inner ring of the bearing is welded to the outer wall of the screw rod, and the outer wall of the outer ring of the bearing is welded to the inner wall of the tank.

[0010] Preferably, the limiting component includes a limiting rod and an annular plate. The annular plate is installed on the top of the base by bolts. There are at least two limiting rods, which are welded to the bottom of the connecting plate at equal angles. A moving plate is welded to the bottom of the limiting rod. A limiting plate is movably sleeved outside the limiting rod. Fixed rods are welded to the left and right sides of the bottom of the limiting plate. The lower ends of the fixed rods movably pass through the moving plate and are welded to the top of the annular plate.

[0011] Preferably, balls are provided at the bottom of the circular plate. Annular ball grooves for the balls to roll are provided on the bottom of the circular plate and the inner wall of the bottom of the tank.

[0012] Preferably, anti-slip teeth are integrally formed on the top of the top plate.

[0013] Preferably, anti-slip nails are integrally formed on the bottom of the base.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] The top plate can rotate. The top plate will tilt with the tilt of the heavy object, so that the top plate will closely adhere to the lifted heavy object, improving the stability when the top plate lifts the heavy object. Through the action of the limiting component, the shaking of the threaded tube during up and down movement is effectively reduced. Through the action of the load-bearing mechanism, the screw rod will not move downward, which is beneficial to the stable transmission between the driving gear and the driven gear;

[0016] Through the action of the bearing, without affecting the rotation of the screw rod, the screw rod is prevented from moving up and down;

[0017] The limiting rod moves up and down along the limiting plate, and the limiting rod drives the moving plate to move up and down along the fixed rod, greatly reducing the shaking of the threaded tube during up and down movement. At the same time, under the blocking of the limiting plate and the moving plate, the threaded tube is prevented from disengaging from the screw rod;

[0018] Through the rolling action of the balls and the action of the lubricating oil inside the tank, it is beneficial to the smooth rotation of the screw rod and the circular plate. Description of the Drawings

[0019] Figure 1 It is a half-section structure diagram of the structure of the present utility model;

[0020] Figure 2 This is a sectional view of the structure of the present utility model;

[0021] Figure 3 This is an enlarged view of part A in the sectional view of the structure of the present utility model.

[0022] In the figure: 100, base; 101, anti-slip nail; 110, motor; 111, driving gear; 120, screw rod; 121, driven gear; 122, threaded pipe; 123, connecting plate; 124, connecting rod; 125, spherical ball; 126, top plate; 127, anti-slip teeth; 130, groove body; 131, circular plate; 1311, ball; 1312, annular ball groove; 132, bearing; 140, limiting rod; 141, moving plate; 150, annular plate; 151, fixing rod; 152, limiting plate. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0024] The same or similar components are labeled with the same reference numerals in different drawings; in addition, please understand that terms such as "first", "second", "third", "upper", "lower", "front", "rear", "inner", "outer", "end", "part", "section", "width", "thickness", "area", etc. in the text are only for the convenience of the viewer to refer to the structure in the drawing and are only used to help describe the present utility model, and are not limitations to the present utility model.

[0025] Please refer to Figures 1-3 , the present utility model provides a technical solution: a vertical electric jack, including a driving assembly, the driving assembly includes a motor 110, the motor 110 is fixedly installed inside the base 100, and the lower end of the output shaft of the motor 110 is installed with a driving gear 111 through bolts;

[0026] a jacking assembly, the jacking assembly includes a screw rod 120, the screw rod 120 is externally screwed with a threaded pipe 122, the threaded pipe 122 can only move up and down under the action of a limiting assembly, and the bottom of the screw rod 120 is welded with a driven gear 121 meshing with the driving gear 111; the top of the threaded pipe 122 is welded with a connecting plate 123, the top of the connecting plate 123 is welded with a spherical ball 125 through a connecting rod 124, and the top of the spherical ball 125 is ball-jointed with a top plate 126;

[0027] The load-bearing mechanism includes a tank body 130 for storing lubricating oil and a circular plate 131. The tank body 130 is installed inside the base 100 by bolts, and the circular plate 131 is welded to the lower end of the screw rod 120. The circular plate 131 is located inside the tank body 130.

[0028] The motor 110 drives the driving gear 111, which drives the driven gear 121, which in turn drives the screw rod 120 to rotate, driving the threaded tube 122 to move up and down. When the threaded tube 122 moves upward to drive the top plate 126 to move upward and lift the heavy object, since the top plate 126 is ball-jointed with the spherical ball 125, the top plate 126 can rotate. Therefore, the top plate 126 will tilt as the heavy object tilts, causing the top plate 126 to closely adhere to the lifted heavy object, improving the stability when the top plate 126 lifts the heavy object. The role of the limiting component effectively reduces the shaking of the threaded tube 122 during up and down movement.

[0029] Due to the action of the load-bearing mechanism, the circular plate 131 bears the pressure of the screw rod 120, preventing the screw rod 120 from moving downward, which is beneficial to the stable transmission between the driving gear 111 and the driven gear 121.

[0030] A bearing 132 is sleeved outside the screw rod 120. The inner wall of the inner ring of the bearing 132 is welded to the outer wall of the screw rod 120, and the outer wall of the outer ring of the bearing 132 is welded to the inner wall of the tank body 130. With the above design, through the action of the bearing 132, the screw rod 120 is prevented from moving up and down without affecting its rotation.

[0031] The limiting component includes a limiting rod 140 and an annular plate 150. The annular plate 150 is installed on the top of the base 100 by bolts. There are at least two limiting rods 140, which are welded to the bottom of the connecting plate 123 at equal angles. A moving plate 141 is welded to the bottom of the limiting rod 140. A limiting plate 152 is movably sleeved outside the limiting rod 140. Fixed rods 151 are welded to the left and right sides of the bottom of the limiting plate 152. The lower ends of the fixed rods 151 movably pass through the moving plate 141 and are welded to the top of the annular plate 150. By adopting the above technical solution, the limiting rod 140 moves up and down along the limiting plate 152, and the limiting rod 140 drives the moving plate 141 to move up and down along the fixed rod 151, greatly reducing the shaking of the threaded tube 122 during up and down movement. At the same time, blocked by the limiting plate 152 and the moving plate 141, the threaded tube 122 is prevented from disengaging from the screw rod 120.

[0032] A ball 1311 is provided at the bottom of the circular plate 131. Annular ball grooves 1312 for the ball 1311 to roll are opened at the bottom of the circular plate 131 and the inner wall of the bottom of the tank body 130. With the above solution, through the rolling action of the ball 1311 and the action of the lubricating oil inside the tank body 130, it is beneficial to the smooth rotation of the screw rod 120 and the circular plate 131.

[0033] The top of the top plate 126 is integrally formed with anti-slip teeth 127, which increases the friction force on the top of the top plate 126.

[0034] The bottom of the base 100 is integrally formed with anti-slip nails 101, which increases the friction force on the bottom of the base 100.

[0035] In summary:

[0036] The top plate 126 can rotate. The top plate 126 will tilt as the heavy object tilts, so that the top plate 126 will closely adhere to the lifted heavy object, improving the stability when the top plate 126 lifts the heavy object. Through the action of the limiting component, the shaking of the threaded pipe 122 during the up and down movement is effectively reduced. Through the action of the load-bearing mechanism, the screw rod 120 will not move downward, which is beneficial to the stable transmission between the driving gear 111 and the driven gear 121;

[0037] Through the action of the bearing 132, without affecting the rotation of the screw rod 120, the screw rod 120 is prevented from moving up and down;

[0038] The limiting rod 140 moves up and down along the limiting plate 152, and the limiting rod 140 drives the moving plate 141 to move up and down along the fixed rod 151, greatly reducing the shaking of the threaded pipe 122 during the up and down movement. At the same time, under the blocking of the limiting plate 152 and the moving plate 141, the threaded pipe 122 is prevented from separating from the screw rod 120;

[0039] Through the rolling action of the balls 1311 and the lubricating oil inside the groove body 130, it is beneficial to the smooth rotation of the screw rod 120 and the circular plate 131.

[0040] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vertical pole electric jack, characterized in that: include: A driving assembly, the driving assembly comprising a motor, the motor is fixedly mounted inside the base, and a driving gear is mounted on the lower end of the output shaft of the motor through bolts; A lifting assembly, the lifting assembly includes a screw rod, a threaded tube is screwed to the outside of the screw rod, the threaded tube can only move up and down under the action of the limit assembly, a driven gear meshing with the driving gear is welded to the bottom of the screw rod; a connecting plate is welded to the top of the threaded tube, a ball is welded to the top of the connecting plate through a connecting rod, and the top of the ball is ball-connected to the top plate; The load-bearing mechanism includes a trough body for storing lubricating oil and a circular plate. The trough body is installed inside the base through bolts, and the circular plate is welded to the lower end of the screw rod. The circular plate is located inside the trough body.

2. The vertical pole electric jack according to claim 1, characterized in that: A bearing is sleeved on the outside of the screw, the inner wall of the inner ring of the bearing is welded to the outer wall of the screw, and the outer wall of the outer ring of the bearing is welded to the inner wall of the groove body.

3. The vertical pole electric jack according to claim 1, characterized in that: The limit assembly includes a limit rod and an annular plate, the annular plate is installed on the top of the base by bolts, at least two limit rods are provided, which are welded at equal angles to the bottom of the connecting plate, a movable plate is welded to the bottom of the limit rod, the outer part of the limit rod is movably sleeved with the limit plate, and fixed rods are welded on the left and right sides of the bottom of the limit plate, and the lower end of the fixed rod movably passes through the movable plate and is welded to the top of the annular plate.

4. The vertical pole electric jack according to claim 1, characterized in that: A ball is arranged at the bottom of the circular plate, and an annular ball groove for the ball to roll is formed at the bottom of the circular plate and the inner wall of the bottom of the groove body.

5. The vertical pole electric jack according to claim 1, characterized in that: The top of the top plate is integrally formed with anti-slip teeth.

6. The vertical pole electric jack according to claim 2, characterized in that: The bottom of the base is integrally formed with anti-slip spikes.

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