CN216005053U

CN216005053U - Jack with improved durability

Info

Publication number: CN216005053U
Application number: CN202121825316.6U
Authority: CN
Inventors: 聂亮; 罗勇; 万晓阳; 张治理
Original assignee: Hangzhou First Technology Engineering Co ltd
Current assignee: Hangzhou First Technology Engineering Co ltd
Priority date: 2021-08-05
Filing date: 2021-08-05
Publication date: 2022-03-11
Anticipated expiration: 2031-08-05

Abstract

The utility model discloses a jack with improved durability, which comprises a base and a top block, wherein a rotating arm set is rotatably connected between the base and the top block through a pin shaft, the rotating arm set comprises a first rotating arm and a second rotating arm which are rotatably connected to the base, the rotating arm set further comprises a third rotating arm and a fourth rotating arm which are rotatably connected to the top block, a first hinge point is arranged between the first rotating arm and the third rotating arm, a second hinge point is arranged between the second rotating arm and the fourth rotating arm, a screw rod is arranged between the first hinge point and the second hinge point, an antifriction bushing is sleeved on the pin shaft, and a lubricating layer is arranged on the antifriction bushing. The wear-reducing bushing with the lubricating layer is arranged in the rotating pair of the jack, so that the wear speed is reduced, and the service life of the jack is prolonged.

Description

Jack with improved durability

Technical Field

The utility model relates to the technical field of automobile equipment manufacturing, in particular to a jack with improved durability.

Background

The vehicle-electricity separation and box-division electricity conversion mode is the development direction of new energy vehicles in the future. The split-box battery replacement has a mode of achieving battery replacement by lifting the battery frame. The lifting battery frame is required to be provided with a lifting mechanism, a jack system is mostly used in the lifting mechanism, and due to the factors of large jack load, harsh use environment and the like, the use frequency of a common jack can not meet the requirements of customers. The utility model designs a set of novel jack structure aiming at the problem, and can effectively prolong the service life of the jack.

For example, chinese patent document (publication No. CN 206476694U) discloses a "scissor jack", which includes a base assembly and a support arm assembly, wherein the base assembly includes an upper base and a lower base stacked up and down, the upper base and the lower base are connected by a connecting member, the lower base can rotate around the connecting member relative to the upper base, and the support arm assembly is rotatably mounted on the upper base.

Above-mentioned technical scheme base and top base are "ten" word form under when user state, not only make the jack-up process more stable, have still increased the area with ground contact, make local ground structure be difficult for being damaged, nevertheless be used for the open air that the environment is abominable, and its durability can't be guaranteed.

Disclosure of Invention

Aiming at the problem that the service life of the jack is shortened under the condition of severe service environment in the background technology, the utility model provides the jack with improved durability.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a jack that durability promotes, includes base and kicking block, it is connected with the rotor arm group to rotate through the round pin axle between base and the kicking block, the rotor arm group is including rotating first rotor arm and the second rotor arm of connecting in the base, and the rotor arm group is still including rotating third rotor arm and the fourth rotor arm of connecting on the kicking block, be provided with first pin joint between first rotor arm and the third rotor arm, second rotor arm and fourth rotor arm are provided with the second pin joint, be provided with the lead screw between first hinge joint and the second pin joint, the epaxial cover of round pin is equipped with the antifriction bush, be provided with the lubricant film on the antifriction bush. The rotating arm group is a core supporting component of the jack, in the rotating arm group, the first rotating arm is hinged to the third rotating arm, the second rotating arm is hinged to the fourth rotating arm, smooth rotation between the rotating arm group and the base and between the rotating arm group and the ejector block can be guaranteed through a pin shaft, friction force in a rotating motion process can be greatly reduced by matching the antifriction bush with the lubricating layer, and abrasion of a moving mechanism can be reduced.

Preferably, the first hinge point and the second hinge point are both provided with screw rod nuts in a hinged mode, and the two screw rod nuts are connected to the two ends of the screw rod respectively. The lead screw passes through the screw-nut to be installed at the pivoted arm group middle part, and the technician rotates the lead screw through the spanner and can adjust the angle of pivoted arm group, changes the distance between base and the kicking block.

Furthermore, the screw rod is externally sleeved with a telescopic sleeve. The flexible cover is used for preventing dust to the lead screw, prevents that filths such as silt, water are direct to contact with the lead screw, avoids the lead screw corrosion scheduling problem to appear, improves the life of lead screw.

Preferably, the wear-reducing bush is a copper piece. Good wear resistance, high hardness, good processability, production and assembly.

Further, the lead screw nut is an aluminum bronze piece. The aluminum bronze material has the characteristics of wear resistance and small frictional resistance. The screw rod is made of No. 45 steel, and the screw rod are matched to effectively prolong the service life of the screw rod and the service life of the screw rod which is unknown in installation.

Preferably, the antifriction bush includes the barrel and sets up in the ring body of barrel outer fringe, the barrel is connected with round pin axle interference. The antifriction bush can effectively reduce the wearing and tearing of round pin axle and screw-nut, protects connection structure, reduces motor output torque and entire system load, improves system transmission efficiency, improves the life of jack simultaneously.

Therefore, the utility model has the following beneficial effects: (1) the wear-reducing bushing with the lubricating layer is arranged in the rotating pair of the jack, so that the wear speed is reduced, and the service life of the jack is prolonged; (2) the telescopic sleeve is used for preventing dust of the screw rod, so that dirt such as silt and water is prevented from directly contacting with the screw rod, the problems of corrosion and the like of the screw rod are avoided, and the service life of the screw rod is prolonged; (3) the antifriction bush can effectively reduce the wearing and tearing of round pin axle and screw-nut, protects connection structure, reduces motor output torque and entire system load, improves system transmission efficiency, improves the life of jack simultaneously.

Drawings

FIG. 1 is an isometric view of the present invention.

Fig. 2 is an exploded view of the present invention.

In the figure: 1. the device comprises a base, 2, a top block, 3, a pin shaft, 4, a first rotating arm, 5, a second rotating arm, 6, a third rotating arm, 7, a fourth rotating arm, 8, a screw rod, 81, a telescopic sleeve, 9, an antifriction bush, 91, a cylinder, 10 and a screw rod nut.

Detailed Description

The utility model is further described with reference to the following detailed description and accompanying drawings. Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Example 1

As shown in fig. 1 and 2, a jack with improved durability comprises a base 1 and a top block 2, wherein a rotating arm set is rotatably connected between the base and the top block through a pin shaft 3, the rotating arm set comprises a first rotating arm 4 and a second rotating arm 5 which are rotatably connected to the base, the rotating arm set further comprises a third rotating arm 6 and a fourth rotating arm 7 which are rotatably connected to the top block, a first hinge point is arranged between the first rotating arm and the third rotating arm, a second hinge point is arranged between the second rotating arm and the fourth rotating arm, a screw rod 8 is arranged between the first hinge point and the second hinge point, an antifriction bushing 9 is sleeved on the pin shaft, and a lubricating layer is arranged on the antifriction bushing. And the first hinge point and the second hinge point are both provided with screw rod nuts in a hinged manner, and the two screw rod nuts are respectively connected to two ends of the screw rod.

The rotating arm group is a core supporting component of the jack, in the rotating arm group, the first rotating arm is hinged to the third rotating arm, the second rotating arm is hinged to the fourth rotating arm, smooth rotation between the rotating arm group and the base and between the rotating arm group and the ejector block can be guaranteed through a pin shaft, friction force in a rotating motion process can be greatly reduced by matching the antifriction bush with the lubricating layer, and abrasion of a moving mechanism can be reduced. The lead screw passes through the screw-nut to be installed at the pivoted arm group middle part, and the technician rotates the lead screw through the spanner and can adjust the angle of pivoted arm group, changes the distance between base and the kicking block. And a telescopic sleeve 81 is sleeved outside the screw rod. The telescopic sleeve can be made of high-molecular polymers and used for preventing dust of the screw rod, preventing mud, water and other dirt from directly contacting with the screw rod, avoiding the screw rod from being rusted and the like, and prolonging the service life of the screw rod.

The antifriction bush is copper spare. The feed screw nut is an aluminum bronze piece. The antifriction bush has good wear resistance, high hardness, good processing performance, production and assembly. The aluminum bronze material has the characteristics of wear resistance and small frictional resistance. The screw rod is made of No. 45 steel, and the screw rod are matched to effectively prolong the service life of the screw rod and the service life of the screw rod which is unknown in installation.

The antifriction bush includes barrel 91 and sets up in the ring body of barrel outer fringe, the barrel is connected with round pin axle interference. The antifriction bush can effectively reduce the wearing and tearing of round pin axle and screw-nut, protects connection structure, reduces motor output torque and entire system load, improves system transmission efficiency, improves the life of jack simultaneously.

In the embodiment, the screw rod with the diameter of 11-15mm is changed into the reinforced screw rod with the diameter of 18mm, so that the rigidity is obviously improved, and the screw rod is prevented from being bent under high load. The lubricating layer arranged on the bushing is a thin oil film formed by lubricating oil, so that the friction force of a rotating pair is effectively reduced, the service life of the power exchanging jack is greatly prolonged, and the output torque of a motor is reduced. The failure rate in the battery replacement process is reduced, and the durability and the user experience of the jack are improved.

In addition to the above embodiments, the technical features of the present invention can be re-selected and combined to form new embodiments within the scope of the claims and the specification of the present invention, which are all realized by those skilled in the art without creative efforts, and thus, the embodiments of the present invention which are not described in detail should be regarded as the specific embodiments of the present invention and are within the protection scope of the present invention.

Claims

1. The utility model provides a jack that durability promotes, includes base and kicking block, it is connected with the rotor arm group to rotate through the round pin axle between base and the kicking block, the rotor arm group is including rotating first rotor arm and the second rotor arm of connecting in the base, and the rotor arm group is still including rotating third rotor arm and the fourth rotor arm of connecting on the kicking block, be provided with first pin joint between first rotor arm and the third rotor arm, second rotor arm and fourth rotor arm are provided with the second pin joint, be provided with the lead screw between first hinge joint and the second pin joint, its characterized in that, the epaxial cover of round pin is equipped with the antifriction bush, be provided with the lubricant film on the antifriction bush.

2. The jack with the improved durability as claimed in claim 1, wherein the first hinge point and the second hinge point are both provided with screw nuts, and the two screw nuts are respectively connected to two ends of the screw rod.

3. The jack with the improved durability as claimed in claim 1, wherein a telescopic sleeve is sleeved outside the screw rod.

4. A jack with increased durability as claimed in claim 1, wherein the wear-reducing bush is a copper part.

5. A jack with increased durability as claimed in claim 2 wherein the lead screw nut is an aluminium bronze piece.

6. The jack with the improved durability as claimed in any one of claims 1 to 5, wherein the antifriction bushing comprises a cylinder and a ring body arranged on the outer edge of the cylinder, and the cylinder is in interference connection with the pin shaft.