CN212669064U - Jack with anti-falling device - Google Patents

Abstract

The utility model relates to a jack with anti-drop device, on the basis of the traditional horizontal oil pressure jack, a fixed pin is added on the wall boards at the two sides of the left and right wall board parts, and the long brake block part and the short brake block part are arranged on the fixed pin and rotate around the fixed pin; wherein the short brake block component keeps upward elastic force through a spring, and the long brake block component keeps upward elastic force through a torsion spring; welding a shaft sleeve on the right side wall plate of the wall plate component so as to install the pedal component and the eccentric resetting mechanism; above mechanism has realized when jack jacking vehicle, carries out mechanical protection at any time, prevents that the jack from descending suddenly when hydraulic system breaks down, avoids taking place the incident, the utility model discloses it is better to have the security.

Description

Jack with anti-falling device

Technical Field

The utility model relates to a jack technique specifically is a jack of device is prevented falling in area.

Background

The existing horizontal oil jack generally comprises a left wall plate part and a right wall plate part, wherein a lifting arm part and an oil pump are arranged between the left wall plate part and the right wall plate part, the lifting arm part is pivoted on the left wall plate part and the right wall plate part, one end of the lifting arm part is connected with a piston rod of the oil pump, the other end of the lifting arm part is provided with a top arm, and the bottoms of the left wall plate part and the right wall; the lifting of the top arm is realized by driving the top arm component to rotate through the oil pump by the existing jack, and the top arm cannot descend when being stressed by the self-locking of the oil pump, but the jack can suddenly descend when a hydraulic system fails, so that certain potential safety hazards exist.

For this purpose, the applicant designs a jack with a braking device, such as the following: CN109626251A, discloses a jack with a braking device, which comprises a base, left and right wall plate parts are arranged on the left and right sides of the base, a lifting arm part and an oil pump device are arranged between the left and right wall plate parts, the lifting arm component is pivoted on the left wall plate component and the right wall plate component, the rear part of the lifting arm component is movably connected with a piston rod of the oil pump device, the front part of the lifting arm component is provided with a top arm, a stop component and a pedal component for controlling the stop component are also arranged between the left wall board component and the right wall board component, the stopping component comprises a stopping arm, the rear end of the stopping arm is pivoted on the base or the left and right wall plate components, the front section of the stopping arm is provided with a slip stopping part, a connecting shaft is arranged at the position of the anti-slip part corresponding to the rear part of the arm component, the connecting shaft is accommodated in the blocking groove of the anti-slip part, the pedal part is pivoted on the base or the left and right wall plate parts, and the anti-slip part of the clamping arm can be separated from the connecting shaft by stepping on the pedal part; a reset mechanism is arranged between the stopping arm and the left and right wall plate parts, the reset mechanism applies upward or upward acting force to the stopping arm to ensure that the anti-slip part is matched with the connecting shaft, and the stop groove of the anti-slip part needs to be matched with the connecting shaft in size, but some jack connecting shafts are not necessarily cylindrical, and the anti-slip part with the stop groove is not good in universality; when in use, the gear-off phenomenon can occur to cause brake failure, and the brake of the structure is completely supported by the anti-slip part, so the thickness of the anti-slip part is thicker; adding cost and weight.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a jack of device is prevented falling in area utilizes long brake shoe part and short brake shoe part to rotate around the fixed pin respectively at resilient means's effect, when treating the jack-up arm jack-up, between the hood plane of oil pump connecting rod and oil pump was gone into in the successive top of short brake shoe part and long brake shoe part, the jack-up arm suddenly descends when preventing oil pump unit to break down, avoids taking place the incident, the utility model discloses it is better to have the security.

The following technical scheme is adopted for achieving the purpose:

the utility model provides a jack of device is prevented falling in area, includes the base, is provided with about wallboard part in the left and right sides of base, controls and is provided with arm component and oil pump unit between the wallboard part, arm component pin joint about on wallboard part, the one end of arm component is the apical arm, its characterized in that: the other end of the jib component is connected with an oil pump connecting shaft (22) parallel to the pivot shaft through a connecting plate (23), a piston rod of the oil pump device is movably connected with the oil pump connecting shaft, a long brake block component and a short brake block component are arranged below the oil pump connecting shaft, the long brake block component and the short brake block component are pivoted between the left wall plate component and the right wall plate component through fixing pins, brake blocks are arranged at the end parts of the long brake block component and the short brake block component, a groove is arranged at the top part of each brake block, the lower part of the piston rod is accommodated in the groove, an elastic device is arranged between the long brake block component and the short brake block component and the left wall plate component or the right wall plate component, and the elastic device applies upward rotating acting force to the brake blocks of the long brake block component, and a pedal unlocking component is arranged on the outer side of the left wall plate component or the right wall plate component and is in contact with the long brake block component and the short brake block component through an eccentric resetting mechanism.

The elastic device comprises a torsion spring arranged between the long brake block component and the left wallboard component or the right wallboard component and a tension spring arranged between the short brake block component and the left wallboard component or the right wallboard component.

The utility model discloses a brake pads on long brake pads part and the short brake pads part replaces original limited slip part, and long brake pads part and short brake pads part wrap the piston rod and the holding is between oil pump connecting axle and oil pump unit's hood plane through the brake pads, except the brake pads, long, short brake pads part itself need not to bear pressure, consequently only need consider the intensity of tip brake pads, and brake pads holding can not go out in the hood plane of oil pump connecting axle and oil pump unit hindering the problem that shelves became invalid simultaneously, and the reliability is better, the utility model discloses it is more reasonable to have a structure, the security is better.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic side structure view of the present invention;

FIG. 3 is a schematic view of the internal structure of the present invention in the initial state;

FIG. 4 is a schematic diagram of the internal structure of the jacking arm assembly of the present invention;

fig. 5 is a schematic diagram of the internal structure of the lift arm assembly of the present invention.

Detailed Description

As shown in fig. 1-5, a jack with anti-drop device, comprising a base, left and right wall plate members 1 disposed on the left and right sides of the base, a lifting arm member 2 and an oil pump device 3 disposed between the left and right wall plate members 1, wherein the lifting arm member 2 is pivoted on the left and right wall plate members 1, and one end of the lifting arm member 2 is a top arm 21, characterized in that: the other end of the arm component 2 passes through the oil pump connecting shaft 22 that the connecting plate 23 is parallel with pivot, the piston rod 31 of the oil pump device 3 is movably connected with the oil pump connecting shaft 22, there are long brake block component 5 and short brake block component 6 below the oil pump connecting shaft 22, the long brake block component 5 and short brake block component 6 are pivoted between the left and right wall board components 1 through the fixed pin 4, the end of the long brake block component 5 and short brake block component 6 are all provided with brake blocks 51, 61, the top of the brake blocks 51, 61 is opened with a groove, when the oil pump connecting shaft 22 is far away from the top cap plane of the oil pump device 3, the brake blocks are clamped between the oil pump connecting shaft and the top cap plane, and the lower part of the piston rod 31 can be accommodated in the groove, there is an elastic device between the long brake block component 5 and short brake block component 6 and the left wall, 61, and a pedal unlocking component 7 is arranged on the outer side of the left wall plate component or the right wall plate component, and the pedal unlocking component 7 is contacted with the long brake block component 5 and the short brake block component 6 through an eccentric resetting mechanism 8.

The resilient means comprises a torsion spring 52 disposed between the long stop block member 5 and the left or right wall plate member and a tension spring 62 disposed between the short stop block member 6 and the left or right wall plate member.

On the basis of the traditional horizontal hydraulic jack, a fixing pin 4 is additionally arranged on the wall plates on the two sides of a left wall plate component 1 and a right wall plate component 1, and a long brake block component 5 and a short brake block component 6 are arranged on the fixing pin and rotate around the fixing pin 4; wherein the short pad member 6 is held by the spring 62 with an upward elastic force, and the long pad member 5 is held by the torsion spring 52 with an upward elastic force; a shaft sleeve is welded on the right side wall plate of the wall plate component so as to install the pedal component 7 and the eccentric resetting mechanism 8; the mechanism realizes mechanical protection at any time when the jack jacks a vehicle, and prevents the jack from suddenly dropping when a hydraulic system fails.

The operation process is as follows:

1. as shown in fig. 3, when the jack is at the lowest position, the brake block 51 of the long brake block member 5 and the brake block 61 of the short brake block member 6 are at the lower part of the oil pump connecting shaft 22, and the anti-falling mechanism does not work;

2. as shown in fig. 4, the jack is operated by a press handle 33, the piston rod 31 gradually extends out to drive the oil pump connecting shaft 22, and the oil pump connecting shaft 22 is linked through the connecting plate 23 to lift the lifting arm 21 upwards; after the oil pump connecting shaft 22 extends for a certain distance, the short brake block 6 moves upwards under the action of the spring 62, so that the brake block 62 is clamped between the oil pump connecting shaft 22 and the top cap plane 32 of the oil pump 7, at the moment, the first-gear anti-falling mechanism works, the jack is released, and the jack is positioned at the position of fig. 4 and does not fall any more under the action of the short brake block 6;

3. as shown in fig. 5: the jack is continuously operated, the piston rod 31 drives the oil pump connecting shaft 22 to continuously extend out, and after a certain distance, the long braking component 5 moves upwards under the action of the torsion spring 52 and also enters between the oil pump connecting shaft 22 and the top cap plane 32 of the oil pump 3, so that mechanical braking is realized, and the lifting arm does not descend any more; at the moment, the second-gear descending-prevention mechanism acts, so that the jack is released, and the jack is positioned at the position of the figure 5 and does not descend any more due to the action of the long brake block 5 and the short brake block 6;

4. when the jack is continuously operated, the lifting arm component 2 is mechanically protected by the long and short brake block components above the height of FIG. 5;

5. if the jack needs to be put down, the braking device needs to be released firstly; treading down the pedal release device 7 to enable the eccentric resetting mechanism 8 connected with the pedal release device to press down the short brake block component 6 and the long brake block component 5; the brake blocks 51 and 61 are moved downwards to release the obstruction of the oil pump connecting shaft; at this time, the release switch of the oil pump 3 is turned on, so that the jack can descend smoothly, and the jacked vehicle can be put down.

Claims (2)

1. The utility model provides a take jack of anti-falling device, includes the base, is provided with left and right sides wallboard part (1) in the left and right sides of base, controls and is provided with arm component (2) and oil pump unit (3) between wallboard part (1), arm component (2) pin joint about on wallboard part (1), the one end of arm component (2) is top arm (21), its characterized in that: the other end of the arm lifting component (2) is connected with an oil pump connecting shaft (22) parallel to the pivot shaft through a connecting plate (23), a piston rod (31) of an oil pump device (3) is movably connected with the oil pump connecting shaft (22), a long brake block component (5) and a short brake block component (6) are arranged below the oil pump connecting shaft (22), the long brake block component (5) and the short brake block component (6) are pivoted between the left wall plate component and the right wall plate component (1) through fixing pins (4), brake blocks are arranged at the end parts of the long brake block component (5) and the short brake block component (6), a groove is formed in the top of each brake block, the lower part of the piston rod (31) can be contained in the groove, an elastic device is arranged between the long brake block component (5) and the short brake block component (6) and the left wall plate component or the right wall plate component, and exerts upward rotating, the pedal unlocking component (7) is arranged on the outer side of the left wall plate component or the right wall plate component, and the pedal unlocking component (7) is contacted with the long brake block component (5) and the short brake block component (6) through an eccentric resetting mechanism (8).

2. A jack with a fall arrest device as claimed in claim 1, wherein: the elastic device comprises a torsion spring (52) arranged between the long brake block component (5) and the left wall board component or the right wall board component and a tension spring (62) arranged between the short brake block component (6) and the left wall board component or the right wall board component.

Images