CN202046830U - Scissor jack - Google Patents

Abstract

The utility model discloses a scissor jack, which comprises a base, a supporting platform, a screw rod, a first connecting block, a second connecting block and a first supporting rod, a second supporting rod, a third supporting rod and a The fourth support rod is characterized in that the optical axis of the screw passes through the first connecting block, the first connecting block is provided with a movable pin, the movable pin radially passes through the first connecting block and the optical axis of the screw, and the threaded part of the screw Through the through hole on the second connecting block, the screw rod is screwed with a driving nut, and the driving nut is located on the outside of the second connecting block; the advantage is that since the movable pin radially passes through the optical axis part of the first connecting block and the screw rod, when When it is necessary to reset, pull out the movable pin, then press down the supporting platform to make the first connecting block slide along the optical axis of the screw rod to quickly reset the scissor jack.

Description

a scissor jack

technical field

The utility model relates to a jack, in particular to a scissor jack.

Background technique

Jack is a commonly used support expansion tool in daily life and some disaster relief (such as car accidents, earthquakes, landslides, etc.). At present, our common jacks mainly include hydraulic jacks and scissor jacks. The scissor jack mainly uses the rotation of the screw mandrel to drive the support rod to stand up or down to realize its supporting function, but the scissor jack with this structure resets very slowly.

Contents of the invention

The technical problem to be solved by the utility model is to provide a scissor jack that can be reset quickly.

The technical scheme adopted by the utility model to solve the above-mentioned technical problems is: a scissor jack, including a base, a support platform, a screw rod, a first connecting block, a second connecting block and the first supporting rod and the second Two support rods, the third support rod and the fourth support rod, the lower ends of the first support rod and the second support rod are pivotally connected to the base, the third support rod and the fourth support rod The upper end is pivotally connected to the support platform, the upper end of the first support rod and the lower end of the fourth support rod are respectively pivotally connected to the first connecting block, and the second support rod The upper end of the upper end and the lower end of the third support rod are respectively pivotally connected to the second connecting block, the optical axis of the screw rod passes through the first connecting block, and the first connecting block A movable pin is arranged on the top, and the movable pin radially passes through the optical axis part of the first connecting block and the screw rod, the second connecting block is provided with a through hole, and the threaded part of the screw rod passes through Through the through hole on the second connecting block, the screw rod is screwed with a driving nut, and the driving nut is located on the outside of the second connecting block. the

Compared with the prior art, the utility model has the advantage that since the movable pin radially passes through the optical axis part of the first connecting block and the screw rod, when it is necessary to reset, the movable pin is pulled out, and then the support table is pressed down to make the first connection The scissor jack can be quickly reset by sliding the block along the optical axis portion of the screw.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

The utility model is described in further detail below in conjunction with the accompanying drawings.

As shown in the figure, a scissor jack includes a base 1, a support platform 2, a screw rod 3, a first connecting block 4, a second connecting block 5, and a first support rod 6 and a second support rod forming a rhombus. 7. The third support rod 8 and the fourth support rod 9, the lower ends of the first support rod 6 and the second support rod 7 are pivotally connected to the base 1, and the upper ends of the third support rod 8 and the fourth support rod 9 are pivotally connected to the On the support platform 2, the upper end of the first support rod 6 and the lower end of the fourth support rod 9 are respectively pivotally connected to the first connection block 4, and the upper end of the second support rod 7 and the lower end of the third support rod 8 are respectively pivotally connected to the On the second connection block 5, the optical axis of the screw rod 3 passes through the first connection block 4, and the first connection block 4 is provided with a movable pin 41, and the movable pin 41 radially passes through the optical axis of the first connection block 4 and the screw rod 3. Shaft part, the second connection block 5 is provided with a through hole, the threaded part of the screw rod 3 passes through the through hole on the second connection block 5, the screw rod 3 is screwed with a drive nut 31, and the drive nut 31 is located at the second connection block 5 outside.

The working process of this jack is: when in use, screw the drive nut 31, and during the process of the drive nut 31 moving inward, drive the second connecting block 5 to move inward, so that the support rod lifts the support platform 2, and when it needs to be reset , directly pull out the movable pin 41, and then press down the support table 2 to make the first connecting block 4 slide along the optical axis of the screw rod 3 to quickly reset the scissor jack.

Claims (1)

1. scissors-type jack, comprise base, brace table, screw rod, first contiguous block, second contiguous block and surround first strut bar of a rhombus mutually, second strut bar, the 3rd strut bar and the 4th strut bar, the lower end of described first strut bar and second strut bar is coupling on described base, the upper shaft of described the 3rd strut bar and the 4th strut bar is connected on the described brace table, the lower end of the upper end of described first strut bar and described the 4th strut bar is coupling respectively on described first contiguous block, the lower end of the upper end of described second strut bar and described the 3rd strut bar is coupling respectively on described second contiguous block, the optical axis that it is characterized in that described screw rod partly passes described first contiguous block, described first contiguous block is provided with removable pin, described removable pin radially passes the optical axis part of described first contiguous block and screw rod, described second contiguous block is provided with through hole, described screw flight partly passes the through hole on described second contiguous block, be bolted with drive nut on the described screw rod, described drive nut is positioned at the outside of described second contiguous block.

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